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+/**
+ * pugixml parser - version 1.12
+ * --------------------------------------------------------
+ * Copyright (C) 2006-2022, by Arseny Kapoulkine (arseny.kapoulkine@gmail.com)
+ * Report bugs and download new versions at https://pugixml.org/
+ *
+ * This library is distributed under the MIT License. See notice at the end
+ * of this file.
+ *
+ * This work is based on the pugxml parser, which is:
+ * Copyright (C) 2003, by Kristen Wegner (kristen@tima.net)
+ */
+
+#ifndef SOURCE_PUGIXML_CPP
+#define SOURCE_PUGIXML_CPP
+
+#include "pugixml.hpp"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <limits.h>
+
+#ifdef PUGIXML_WCHAR_MODE
+# include <wchar.h>
+#endif
+
+#ifndef PUGIXML_NO_XPATH
+# include <math.h>
+# include <float.h>
+#endif
+
+#ifndef PUGIXML_NO_STL
+# include <istream>
+# include <ostream>
+# include <string>
+#endif
+
+// For placement new
+#include <new>
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable: 4127) // conditional expression is constant
+# pragma warning(disable: 4324) // structure was padded due to __declspec(align())
+# pragma warning(disable: 4702) // unreachable code
+# pragma warning(disable: 4996) // this function or variable may be unsafe
+#endif
+
+#if defined(_MSC_VER) && defined(__c2__)
+# pragma clang diagnostic push
+# pragma clang diagnostic ignored "-Wdeprecated" // this function or variable may be unsafe
+#endif
+
+#ifdef __INTEL_COMPILER
+# pragma warning(disable: 177) // function was declared but never referenced
+# pragma warning(disable: 279) // controlling expression is constant
+# pragma warning(disable: 1478 1786) // function was declared "deprecated"
+# pragma warning(disable: 1684) // conversion from pointer to same-sized integral type
+#endif
+
+#if defined(__BORLANDC__) && defined(PUGIXML_HEADER_ONLY)
+# pragma warn -8080 // symbol is declared but never used; disabling this inside push/pop bracket does not make the warning go away
+#endif
+
+#ifdef __BORLANDC__
+# pragma option push
+# pragma warn -8008 // condition is always false
+# pragma warn -8066 // unreachable code
+#endif
+
+#ifdef __SNC__
+// Using diag_push/diag_pop does not disable the warnings inside templates due to a compiler bug
+# pragma diag_suppress=178 // function was declared but never referenced
+# pragma diag_suppress=237 // controlling expression is constant
+#endif
+
+#ifdef __TI_COMPILER_VERSION__
+# pragma diag_suppress 179 // function was declared but never referenced
+#endif
+
+// Inlining controls
+#if defined(_MSC_VER) && _MSC_VER >= 1300
+# define PUGI__NO_INLINE __declspec(noinline)
+#elif defined(__GNUC__)
+# define PUGI__NO_INLINE __attribute__((noinline))
+#else
+# define PUGI__NO_INLINE
+#endif
+
+// Branch weight controls
+#if defined(__GNUC__) && !defined(__c2__)
+# define PUGI__UNLIKELY(cond) __builtin_expect(cond, 0)
+#else
+# define PUGI__UNLIKELY(cond) (cond)
+#endif
+
+// Simple static assertion
+#define PUGI__STATIC_ASSERT(cond) { static const char condition_failed[(cond) ? 1 : -1] = {0}; (void)condition_failed[0]; }
+
+// Digital Mars C++ bug workaround for passing char loaded from memory via stack
+#ifdef __DMC__
+# define PUGI__DMC_VOLATILE volatile
+#else
+# define PUGI__DMC_VOLATILE
+#endif
+
+// Integer sanitizer workaround; we only apply this for clang since gcc8 has no_sanitize but not unsigned-integer-overflow and produces "attribute directive ignored" warnings
+#if defined(__clang__) && defined(__has_attribute)
+# if __has_attribute(no_sanitize)
+# define PUGI__UNSIGNED_OVERFLOW __attribute__((no_sanitize("unsigned-integer-overflow")))
+# else
+# define PUGI__UNSIGNED_OVERFLOW
+# endif
+#else
+# define PUGI__UNSIGNED_OVERFLOW
+#endif
+
+// Borland C++ bug workaround for not defining ::memcpy depending on header include order (can't always use std::memcpy because some compilers don't have it at all)
+#if defined(__BORLANDC__) && !defined(__MEM_H_USING_LIST)
+using std::memcpy;
+using std::memmove;
+using std::memset;
+#endif
+
+// Some MinGW/GCC versions have headers that erroneously omit LLONG_MIN/LLONG_MAX/ULLONG_MAX definitions from limits.h in some configurations
+#if defined(PUGIXML_HAS_LONG_LONG) && defined(__GNUC__) && !defined(LLONG_MAX) && !defined(LLONG_MIN) && !defined(ULLONG_MAX)
+# define LLONG_MIN (-LLONG_MAX - 1LL)
+# define LLONG_MAX __LONG_LONG_MAX__
+# define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
+#endif
+
+// In some environments MSVC is a compiler but the CRT lacks certain MSVC-specific features
+#if defined(_MSC_VER) && !defined(__S3E__) && !defined(_WIN32_WCE)
+# define PUGI__MSVC_CRT_VERSION _MSC_VER
+#elif defined(_WIN32_WCE)
+# define PUGI__MSVC_CRT_VERSION 1310 // MSVC7.1
+#endif
+
+// Not all platforms have snprintf; we define a wrapper that uses snprintf if possible. This only works with buffers with a known size.
+#if __cplusplus >= 201103
+# define PUGI__SNPRINTF(buf, ...) snprintf(buf, sizeof(buf), __VA_ARGS__)
+#elif defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400
+# define PUGI__SNPRINTF(buf, ...) _snprintf_s(buf, _countof(buf), _TRUNCATE, __VA_ARGS__)
+#else
+# define PUGI__SNPRINTF sprintf
+#endif
+
+// We put implementation details into an anonymous namespace in source mode, but have to keep it in non-anonymous namespace in header-only mode to prevent binary bloat.
+#ifdef PUGIXML_HEADER_ONLY
+# define PUGI__NS_BEGIN namespace pugi { namespace impl {
+# define PUGI__NS_END } }
+# define PUGI__FN inline
+# define PUGI__FN_NO_INLINE inline
+#else
+# if defined(_MSC_VER) && _MSC_VER < 1300 // MSVC6 seems to have an amusing bug with anonymous namespaces inside namespaces
+# define PUGI__NS_BEGIN namespace pugi { namespace impl {
+# define PUGI__NS_END } }
+# else
+# define PUGI__NS_BEGIN namespace pugi { namespace impl { namespace {
+# define PUGI__NS_END } } }
+# endif
+# define PUGI__FN
+# define PUGI__FN_NO_INLINE PUGI__NO_INLINE
+#endif
+
+// uintptr_t
+#if (defined(_MSC_VER) && _MSC_VER < 1600) || (defined(__BORLANDC__) && __BORLANDC__ < 0x561)
+namespace pugi
+{
+# ifndef _UINTPTR_T_DEFINED
+ typedef size_t uintptr_t;
+# endif
+
+ typedef unsigned __int8 uint8_t;
+ typedef unsigned __int16 uint16_t;
+ typedef unsigned __int32 uint32_t;
+}
+#else
+# include <stdint.h>
+#endif
+
+// Memory allocation
+PUGI__NS_BEGIN
+ PUGI__FN void* default_allocate(size_t size)
+ {
+ return malloc(size);
+ }
+
+ PUGI__FN void default_deallocate(void* ptr)
+ {
+ free(ptr);
+ }
+
+ template <typename T>
+ struct xml_memory_management_function_storage
+ {
+ static allocation_function allocate;
+ static deallocation_function deallocate;
+ };
+
+ // Global allocation functions are stored in class statics so that in header mode linker deduplicates them
+ // Without a template<> we'll get multiple definitions of the same static
+ template <typename T> allocation_function xml_memory_management_function_storage<T>::allocate = default_allocate;
+ template <typename T> deallocation_function xml_memory_management_function_storage<T>::deallocate = default_deallocate;
+
+ typedef xml_memory_management_function_storage<int> xml_memory;
+PUGI__NS_END
+
+// String utilities
+PUGI__NS_BEGIN
+ // Get string length
+ PUGI__FN size_t strlength(const char_t* s)
+ {
+ assert(s);
+
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcslen(s);
+ #else
+ return strlen(s);
+ #endif
+ }
+
+ // Compare two strings
+ PUGI__FN bool strequal(const char_t* src, const char_t* dst)
+ {
+ assert(src && dst);
+
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcscmp(src, dst) == 0;
+ #else
+ return strcmp(src, dst) == 0;
+ #endif
+ }
+
+ // Compare lhs with [rhs_begin, rhs_end)
+ PUGI__FN bool strequalrange(const char_t* lhs, const char_t* rhs, size_t count)
+ {
+ for (size_t i = 0; i < count; ++i)
+ if (lhs[i] != rhs[i])
+ return false;
+
+ return lhs[count] == 0;
+ }
+
+ // Get length of wide string, even if CRT lacks wide character support
+ PUGI__FN size_t strlength_wide(const wchar_t* s)
+ {
+ assert(s);
+
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcslen(s);
+ #else
+ const wchar_t* end = s;
+ while (*end) end++;
+ return static_cast<size_t>(end - s);
+ #endif
+ }
+PUGI__NS_END
+
+// auto_ptr-like object for exception recovery
+PUGI__NS_BEGIN
+ template <typename T> struct auto_deleter
+ {
+ typedef void (*D)(T*);
+
+ T* data;
+ D deleter;
+
+ auto_deleter(T* data_, D deleter_): data(data_), deleter(deleter_)
+ {
+ }
+
+ ~auto_deleter()
+ {
+ if (data) deleter(data);
+ }
+
+ T* release()
+ {
+ T* result = data;
+ data = 0;
+ return result;
+ }
+ };
+PUGI__NS_END
+
+#ifdef PUGIXML_COMPACT
+PUGI__NS_BEGIN
+ class compact_hash_table
+ {
+ public:
+ compact_hash_table(): _items(0), _capacity(0), _count(0)
+ {
+ }
+
+ void clear()
+ {
+ if (_items)
+ {
+ xml_memory::deallocate(_items);
+ _items = 0;
+ _capacity = 0;
+ _count = 0;
+ }
+ }
+
+ void* find(const void* key)
+ {
+ if (_capacity == 0) return 0;
+
+ item_t* item = get_item(key);
+ assert(item);
+ assert(item->key == key || (item->key == 0 && item->value == 0));
+
+ return item->value;
+ }
+
+ void insert(const void* key, void* value)
+ {
+ assert(_capacity != 0 && _count < _capacity - _capacity / 4);
+
+ item_t* item = get_item(key);
+ assert(item);
+
+ if (item->key == 0)
+ {
+ _count++;
+ item->key = key;
+ }
+
+ item->value = value;
+ }
+
+ bool reserve(size_t extra = 16)
+ {
+ if (_count + extra >= _capacity - _capacity / 4)
+ return rehash(_count + extra);
+
+ return true;
+ }
+
+ private:
+ struct item_t
+ {
+ const void* key;
+ void* value;
+ };
+
+ item_t* _items;
+ size_t _capacity;
+
+ size_t _count;
+
+ bool rehash(size_t count);
+
+ item_t* get_item(const void* key)
+ {
+ assert(key);
+ assert(_capacity > 0);
+
+ size_t hashmod = _capacity - 1;
+ size_t bucket = hash(key) & hashmod;
+
+ for (size_t probe = 0; probe <= hashmod; ++probe)
+ {
+ item_t& probe_item = _items[bucket];
+
+ if (probe_item.key == key || probe_item.key == 0)
+ return &probe_item;
+
+ // hash collision, quadratic probing
+ bucket = (bucket + probe + 1) & hashmod;
+ }
+
+ assert(false && "Hash table is full"); // unreachable
+ return 0;
+ }
+
+ static PUGI__UNSIGNED_OVERFLOW unsigned int hash(const void* key)
+ {
+ unsigned int h = static_cast<unsigned int>(reinterpret_cast<uintptr_t>(key) & 0xffffffff);
+
+ // MurmurHash3 32-bit finalizer
+ h ^= h >> 16;
+ h *= 0x85ebca6bu;
+ h ^= h >> 13;
+ h *= 0xc2b2ae35u;
+ h ^= h >> 16;
+
+ return h;
+ }
+ };
+
+ PUGI__FN_NO_INLINE bool compact_hash_table::rehash(size_t count)
+ {
+ size_t capacity = 32;
+ while (count >= capacity - capacity / 4)
+ capacity *= 2;
+
+ compact_hash_table rt;
+ rt._capacity = capacity;
+ rt._items = static_cast<item_t*>(xml_memory::allocate(sizeof(item_t) * capacity));
+
+ if (!rt._items)
+ return false;
+
+ memset(rt._items, 0, sizeof(item_t) * capacity);
+
+ for (size_t i = 0; i < _capacity; ++i)
+ if (_items[i].key)
+ rt.insert(_items[i].key, _items[i].value);
+
+ if (_items)
+ xml_memory::deallocate(_items);
+
+ _capacity = capacity;
+ _items = rt._items;
+
+ assert(_count == rt._count);
+
+ return true;
+ }
+
+PUGI__NS_END
+#endif
+
+PUGI__NS_BEGIN
+#ifdef PUGIXML_COMPACT
+ static const uintptr_t xml_memory_block_alignment = 4;
+#else
+ static const uintptr_t xml_memory_block_alignment = sizeof(void*);
+#endif
+
+ // extra metadata bits
+ static const uintptr_t xml_memory_page_contents_shared_mask = 64;
+ static const uintptr_t xml_memory_page_name_allocated_mask = 32;
+ static const uintptr_t xml_memory_page_value_allocated_mask = 16;
+ static const uintptr_t xml_memory_page_type_mask = 15;
+
+ // combined masks for string uniqueness
+ static const uintptr_t xml_memory_page_name_allocated_or_shared_mask = xml_memory_page_name_allocated_mask | xml_memory_page_contents_shared_mask;
+ static const uintptr_t xml_memory_page_value_allocated_or_shared_mask = xml_memory_page_value_allocated_mask | xml_memory_page_contents_shared_mask;
+
+#ifdef PUGIXML_COMPACT
+ #define PUGI__GETHEADER_IMPL(object, page, flags) // unused
+ #define PUGI__GETPAGE_IMPL(header) (header).get_page()
+#else
+ #define PUGI__GETHEADER_IMPL(object, page, flags) (((reinterpret_cast<char*>(object) - reinterpret_cast<char*>(page)) << 8) | (flags))
+ // this macro casts pointers through void* to avoid 'cast increases required alignment of target type' warnings
+ #define PUGI__GETPAGE_IMPL(header) static_cast<impl::xml_memory_page*>(const_cast<void*>(static_cast<const void*>(reinterpret_cast<const char*>(&header) - (header >> 8))))
+#endif
+
+ #define PUGI__GETPAGE(n) PUGI__GETPAGE_IMPL((n)->header)
+ #define PUGI__NODETYPE(n) static_cast<xml_node_type>((n)->header & impl::xml_memory_page_type_mask)
+
+ struct xml_allocator;
+
+ struct xml_memory_page
+ {
+ static xml_memory_page* construct(void* memory)
+ {
+ xml_memory_page* result = static_cast<xml_memory_page*>(memory);
+
+ result->allocator = 0;
+ result->prev = 0;
+ result->next = 0;
+ result->busy_size = 0;
+ result->freed_size = 0;
+
+ #ifdef PUGIXML_COMPACT
+ result->compact_string_base = 0;
+ result->compact_shared_parent = 0;
+ result->compact_page_marker = 0;
+ #endif
+
+ return result;
+ }
+
+ xml_allocator* allocator;
+
+ xml_memory_page* prev;
+ xml_memory_page* next;
+
+ size_t busy_size;
+ size_t freed_size;
+
+ #ifdef PUGIXML_COMPACT
+ char_t* compact_string_base;
+ void* compact_shared_parent;
+ uint32_t* compact_page_marker;
+ #endif
+ };
+
+ static const size_t xml_memory_page_size =
+ #ifdef PUGIXML_MEMORY_PAGE_SIZE
+ (PUGIXML_MEMORY_PAGE_SIZE)
+ #else
+ 32768
+ #endif
+ - sizeof(xml_memory_page);
+
+ struct xml_memory_string_header
+ {
+ uint16_t page_offset; // offset from page->data
+ uint16_t full_size; // 0 if string occupies whole page
+ };
+
+ struct xml_allocator
+ {
+ xml_allocator(xml_memory_page* root): _root(root), _busy_size(root->busy_size)
+ {
+ #ifdef PUGIXML_COMPACT
+ _hash = 0;
+ #endif
+ }
+
+ xml_memory_page* allocate_page(size_t data_size)
+ {
+ size_t size = sizeof(xml_memory_page) + data_size;
+
+ // allocate block with some alignment, leaving memory for worst-case padding
+ void* memory = xml_memory::allocate(size);
+ if (!memory) return 0;
+
+ // prepare page structure
+ xml_memory_page* page = xml_memory_page::construct(memory);
+ assert(page);
+
+ assert(this == _root->allocator);
+ page->allocator = this;
+
+ return page;
+ }
+
+ static void deallocate_page(xml_memory_page* page)
+ {
+ xml_memory::deallocate(page);
+ }
+
+ void* allocate_memory_oob(size_t size, xml_memory_page*& out_page);
+
+ void* allocate_memory(size_t size, xml_memory_page*& out_page)
+ {
+ if (PUGI__UNLIKELY(_busy_size + size > xml_memory_page_size))
+ return allocate_memory_oob(size, out_page);
+
+ void* buf = reinterpret_cast<char*>(_root) + sizeof(xml_memory_page) + _busy_size;
+
+ _busy_size += size;
+
+ out_page = _root;
+
+ return buf;
+ }
+
+ #ifdef PUGIXML_COMPACT
+ void* allocate_object(size_t size, xml_memory_page*& out_page)
+ {
+ void* result = allocate_memory(size + sizeof(uint32_t), out_page);
+ if (!result) return 0;
+
+ // adjust for marker
+ ptrdiff_t offset = static_cast<char*>(result) - reinterpret_cast<char*>(out_page->compact_page_marker);
+
+ if (PUGI__UNLIKELY(static_cast<uintptr_t>(offset) >= 256 * xml_memory_block_alignment))
+ {
+ // insert new marker
+ uint32_t* marker = static_cast<uint32_t*>(result);
+
+ *marker = static_cast<uint32_t>(reinterpret_cast<char*>(marker) - reinterpret_cast<char*>(out_page));
+ out_page->compact_page_marker = marker;
+
+ // since we don't reuse the page space until we reallocate it, we can just pretend that we freed the marker block
+ // this will make sure deallocate_memory correctly tracks the size
+ out_page->freed_size += sizeof(uint32_t);
+
+ return marker + 1;
+ }
+ else
+ {
+ // roll back uint32_t part
+ _busy_size -= sizeof(uint32_t);
+
+ return result;
+ }
+ }
+ #else
+ void* allocate_object(size_t size, xml_memory_page*& out_page)
+ {
+ return allocate_memory(size, out_page);
+ }
+ #endif
+
+ void deallocate_memory(void* ptr, size_t size, xml_memory_page* page)
+ {
+ if (page == _root) page->busy_size = _busy_size;
+
+ assert(ptr >= reinterpret_cast<char*>(page) + sizeof(xml_memory_page) && ptr < reinterpret_cast<char*>(page) + sizeof(xml_memory_page) + page->busy_size);
+ (void)!ptr;
+
+ page->freed_size += size;
+ assert(page->freed_size <= page->busy_size);
+
+ if (page->freed_size == page->busy_size)
+ {
+ if (page->next == 0)
+ {
+ assert(_root == page);
+
+ // top page freed, just reset sizes
+ page->busy_size = 0;
+ page->freed_size = 0;
+
+ #ifdef PUGIXML_COMPACT
+ // reset compact state to maximize efficiency
+ page->compact_string_base = 0;
+ page->compact_shared_parent = 0;
+ page->compact_page_marker = 0;
+ #endif
+
+ _busy_size = 0;
+ }
+ else
+ {
+ assert(_root != page);
+ assert(page->prev);
+
+ // remove from the list
+ page->prev->next = page->next;
+ page->next->prev = page->prev;
+
+ // deallocate
+ deallocate_page(page);
+ }
+ }
+ }
+
+ char_t* allocate_string(size_t length)
+ {
+ static const size_t max_encoded_offset = (1 << 16) * xml_memory_block_alignment;
+
+ PUGI__STATIC_ASSERT(xml_memory_page_size <= max_encoded_offset);
+
+ // allocate memory for string and header block
+ size_t size = sizeof(xml_memory_string_header) + length * sizeof(char_t);
+
+ // round size up to block alignment boundary
+ size_t full_size = (size + (xml_memory_block_alignment - 1)) & ~(xml_memory_block_alignment - 1);
+
+ xml_memory_page* page;
+ xml_memory_string_header* header = static_cast<xml_memory_string_header*>(allocate_memory(full_size, page));
+
+ if (!header) return 0;
+
+ // setup header
+ ptrdiff_t page_offset = reinterpret_cast<char*>(header) - reinterpret_cast<char*>(page) - sizeof(xml_memory_page);
+
+ assert(page_offset % xml_memory_block_alignment == 0);
+ assert(page_offset >= 0 && static_cast<size_t>(page_offset) < max_encoded_offset);
+ header->page_offset = static_cast<uint16_t>(static_cast<size_t>(page_offset) / xml_memory_block_alignment);
+
+ // full_size == 0 for large strings that occupy the whole page
+ assert(full_size % xml_memory_block_alignment == 0);
+ assert(full_size < max_encoded_offset || (page->busy_size == full_size && page_offset == 0));
+ header->full_size = static_cast<uint16_t>(full_size < max_encoded_offset ? full_size / xml_memory_block_alignment : 0);
+
+ // round-trip through void* to avoid 'cast increases required alignment of target type' warning
+ // header is guaranteed a pointer-sized alignment, which should be enough for char_t
+ return static_cast<char_t*>(static_cast<void*>(header + 1));
+ }
+
+ void deallocate_string(char_t* string)
+ {
+ // this function casts pointers through void* to avoid 'cast increases required alignment of target type' warnings
+ // we're guaranteed the proper (pointer-sized) alignment on the input string if it was allocated via allocate_string
+
+ // get header
+ xml_memory_string_header* header = static_cast<xml_memory_string_header*>(static_cast<void*>(string)) - 1;
+ assert(header);
+
+ // deallocate
+ size_t page_offset = sizeof(xml_memory_page) + header->page_offset * xml_memory_block_alignment;
+ xml_memory_page* page = reinterpret_cast<xml_memory_page*>(static_cast<void*>(reinterpret_cast<char*>(header) - page_offset));
+
+ // if full_size == 0 then this string occupies the whole page
+ size_t full_size = header->full_size == 0 ? page->busy_size : header->full_size * xml_memory_block_alignment;
+
+ deallocate_memory(header, full_size, page);
+ }
+
+ bool reserve()
+ {
+ #ifdef PUGIXML_COMPACT
+ return _hash->reserve();
+ #else
+ return true;
+ #endif
+ }
+
+ xml_memory_page* _root;
+ size_t _busy_size;
+
+ #ifdef PUGIXML_COMPACT
+ compact_hash_table* _hash;
+ #endif
+ };
+
+ PUGI__FN_NO_INLINE void* xml_allocator::allocate_memory_oob(size_t size, xml_memory_page*& out_page)
+ {
+ const size_t large_allocation_threshold = xml_memory_page_size / 4;
+
+ xml_memory_page* page = allocate_page(size <= large_allocation_threshold ? xml_memory_page_size : size);
+ out_page = page;
+
+ if (!page) return 0;
+
+ if (size <= large_allocation_threshold)
+ {
+ _root->busy_size = _busy_size;
+
+ // insert page at the end of linked list
+ page->prev = _root;
+ _root->next = page;
+ _root = page;
+
+ _busy_size = size;
+ }
+ else
+ {
+ // insert page before the end of linked list, so that it is deleted as soon as possible
+ // the last page is not deleted even if it's empty (see deallocate_memory)
+ assert(_root->prev);
+
+ page->prev = _root->prev;
+ page->next = _root;
+
+ _root->prev->next = page;
+ _root->prev = page;
+
+ page->busy_size = size;
+ }
+
+ return reinterpret_cast<char*>(page) + sizeof(xml_memory_page);
+ }
+PUGI__NS_END
+
+#ifdef PUGIXML_COMPACT
+PUGI__NS_BEGIN
+ static const uintptr_t compact_alignment_log2 = 2;
+ static const uintptr_t compact_alignment = 1 << compact_alignment_log2;
+
+ class compact_header
+ {
+ public:
+ compact_header(xml_memory_page* page, unsigned int flags)
+ {
+ PUGI__STATIC_ASSERT(xml_memory_block_alignment == compact_alignment);
+
+ ptrdiff_t offset = (reinterpret_cast<char*>(this) - reinterpret_cast<char*>(page->compact_page_marker));
+ assert(offset % compact_alignment == 0 && static_cast<uintptr_t>(offset) < 256 * compact_alignment);
+
+ _page = static_cast<unsigned char>(offset >> compact_alignment_log2);
+ _flags = static_cast<unsigned char>(flags);
+ }
+
+ void operator&=(uintptr_t mod)
+ {
+ _flags &= static_cast<unsigned char>(mod);
+ }
+
+ void operator|=(uintptr_t mod)
+ {
+ _flags |= static_cast<unsigned char>(mod);
+ }
+
+ uintptr_t operator&(uintptr_t mod) const
+ {
+ return _flags & mod;
+ }
+
+ xml_memory_page* get_page() const
+ {
+ // round-trip through void* to silence 'cast increases required alignment of target type' warnings
+ const char* page_marker = reinterpret_cast<const char*>(this) - (_page << compact_alignment_log2);
+ const char* page = page_marker - *reinterpret_cast<const uint32_t*>(static_cast<const void*>(page_marker));
+
+ return const_cast<xml_memory_page*>(reinterpret_cast<const xml_memory_page*>(static_cast<const void*>(page)));
+ }
+
+ private:
+ unsigned char _page;
+ unsigned char _flags;
+ };
+
+ PUGI__FN xml_memory_page* compact_get_page(const void* object, int header_offset)
+ {
+ const compact_header* header = reinterpret_cast<const compact_header*>(static_cast<const char*>(object) - header_offset);
+
+ return header->get_page();
+ }
+
+ template <int header_offset, typename T> PUGI__FN_NO_INLINE T* compact_get_value(const void* object)
+ {
+ return static_cast<T*>(compact_get_page(object, header_offset)->allocator->_hash->find(object));
+ }
+
+ template <int header_offset, typename T> PUGI__FN_NO_INLINE void compact_set_value(const void* object, T* value)
+ {
+ compact_get_page(object, header_offset)->allocator->_hash->insert(object, value);
+ }
+
+ template <typename T, int header_offset, int start = -126> class compact_pointer
+ {
+ public:
+ compact_pointer(): _data(0)
+ {
+ }
+
+ void operator=(const compact_pointer& rhs)
+ {
+ *this = rhs + 0;
+ }
+
+ void operator=(T* value)
+ {
+ if (value)
+ {
+ // value is guaranteed to be compact-aligned; 'this' is not
+ // our decoding is based on 'this' aligned to compact alignment downwards (see operator T*)
+ // so for negative offsets (e.g. -3) we need to adjust the diff by compact_alignment - 1 to
+ // compensate for arithmetic shift rounding for negative values
+ ptrdiff_t diff = reinterpret_cast<char*>(value) - reinterpret_cast<char*>(this);
+ ptrdiff_t offset = ((diff + int(compact_alignment - 1)) >> compact_alignment_log2) - start;
+
+ if (static_cast<uintptr_t>(offset) <= 253)
+ _data = static_cast<unsigned char>(offset + 1);
+ else
+ {
+ compact_set_value<header_offset>(this, value);
+
+ _data = 255;
+ }
+ }
+ else
+ _data = 0;
+ }
+
+ operator T*() const
+ {
+ if (_data)
+ {
+ if (_data < 255)
+ {
+ uintptr_t base = reinterpret_cast<uintptr_t>(this) & ~(compact_alignment - 1);
+
+ return reinterpret_cast<T*>(base + (_data - 1 + start) * compact_alignment);
+ }
+ else
+ return compact_get_value<header_offset, T>(this);
+ }
+ else
+ return 0;
+ }
+
+ T* operator->() const
+ {
+ return *this;
+ }
+
+ private:
+ unsigned char _data;
+ };
+
+ template <typename T, int header_offset> class compact_pointer_parent
+ {
+ public:
+ compact_pointer_parent(): _data(0)
+ {
+ }
+
+ void operator=(const compact_pointer_parent& rhs)
+ {
+ *this = rhs + 0;
+ }
+
+ void operator=(T* value)
+ {
+ if (value)
+ {
+ // value is guaranteed to be compact-aligned; 'this' is not
+ // our decoding is based on 'this' aligned to compact alignment downwards (see operator T*)
+ // so for negative offsets (e.g. -3) we need to adjust the diff by compact_alignment - 1 to
+ // compensate for arithmetic shift behavior for negative values
+ ptrdiff_t diff = reinterpret_cast<char*>(value) - reinterpret_cast<char*>(this);
+ ptrdiff_t offset = ((diff + int(compact_alignment - 1)) >> compact_alignment_log2) + 65533;
+
+ if (static_cast<uintptr_t>(offset) <= 65533)
+ {
+ _data = static_cast<unsigned short>(offset + 1);
+ }
+ else
+ {
+ xml_memory_page* page = compact_get_page(this, header_offset);
+
+ if (PUGI__UNLIKELY(page->compact_shared_parent == 0))
+ page->compact_shared_parent = value;
+
+ if (page->compact_shared_parent == value)
+ {
+ _data = 65534;
+ }
+ else
+ {
+ compact_set_value<header_offset>(this, value);
+
+ _data = 65535;
+ }
+ }
+ }
+ else
+ {
+ _data = 0;
+ }
+ }
+
+ operator T*() const
+ {
+ if (_data)
+ {
+ if (_data < 65534)
+ {
+ uintptr_t base = reinterpret_cast<uintptr_t>(this) & ~(compact_alignment - 1);
+
+ return reinterpret_cast<T*>(base + (_data - 1 - 65533) * compact_alignment);
+ }
+ else if (_data == 65534)
+ return static_cast<T*>(compact_get_page(this, header_offset)->compact_shared_parent);
+ else
+ return compact_get_value<header_offset, T>(this);
+ }
+ else
+ return 0;
+ }
+
+ T* operator->() const
+ {
+ return *this;
+ }
+
+ private:
+ uint16_t _data;
+ };
+
+ template <int header_offset, int base_offset> class compact_string
+ {
+ public:
+ compact_string(): _data(0)
+ {
+ }
+
+ void operator=(const compact_string& rhs)
+ {
+ *this = rhs + 0;
+ }
+
+ void operator=(char_t* value)
+ {
+ if (value)
+ {
+ xml_memory_page* page = compact_get_page(this, header_offset);
+
+ if (PUGI__UNLIKELY(page->compact_string_base == 0))
+ page->compact_string_base = value;
+
+ ptrdiff_t offset = value - page->compact_string_base;
+
+ if (static_cast<uintptr_t>(offset) < (65535 << 7))
+ {
+ // round-trip through void* to silence 'cast increases required alignment of target type' warnings
+ uint16_t* base = reinterpret_cast<uint16_t*>(static_cast<void*>(reinterpret_cast<char*>(this) - base_offset));
+
+ if (*base == 0)
+ {
+ *base = static_cast<uint16_t>((offset >> 7) + 1);
+ _data = static_cast<unsigned char>((offset & 127) + 1);
+ }
+ else
+ {
+ ptrdiff_t remainder = offset - ((*base - 1) << 7);
+
+ if (static_cast<uintptr_t>(remainder) <= 253)
+ {
+ _data = static_cast<unsigned char>(remainder + 1);
+ }
+ else
+ {
+ compact_set_value<header_offset>(this, value);
+
+ _data = 255;
+ }
+ }
+ }
+ else
+ {
+ compact_set_value<header_offset>(this, value);
+
+ _data = 255;
+ }
+ }
+ else
+ {
+ _data = 0;
+ }
+ }
+
+ operator char_t*() const
+ {
+ if (_data)
+ {
+ if (_data < 255)
+ {
+ xml_memory_page* page = compact_get_page(this, header_offset);
+
+ // round-trip through void* to silence 'cast increases required alignment of target type' warnings
+ const uint16_t* base = reinterpret_cast<const uint16_t*>(static_cast<const void*>(reinterpret_cast<const char*>(this) - base_offset));
+ assert(*base);
+
+ ptrdiff_t offset = ((*base - 1) << 7) + (_data - 1);
+
+ return page->compact_string_base + offset;
+ }
+ else
+ {
+ return compact_get_value<header_offset, char_t>(this);
+ }
+ }
+ else
+ return 0;
+ }
+
+ private:
+ unsigned char _data;
+ };
+PUGI__NS_END
+#endif
+
+#ifdef PUGIXML_COMPACT
+namespace pugi
+{
+ struct xml_attribute_struct
+ {
+ xml_attribute_struct(impl::xml_memory_page* page): header(page, 0), namevalue_base(0)
+ {
+ PUGI__STATIC_ASSERT(sizeof(xml_attribute_struct) == 8);
+ }
+
+ impl::compact_header header;
+
+ uint16_t namevalue_base;
+
+ impl::compact_string<4, 2> name;
+ impl::compact_string<5, 3> value;
+
+ impl::compact_pointer<xml_attribute_struct, 6> prev_attribute_c;
+ impl::compact_pointer<xml_attribute_struct, 7, 0> next_attribute;
+ };
+
+ struct xml_node_struct
+ {
+ xml_node_struct(impl::xml_memory_page* page, xml_node_type type): header(page, type), namevalue_base(0)
+ {
+ PUGI__STATIC_ASSERT(sizeof(xml_node_struct) == 12);
+ }
+
+ impl::compact_header header;
+
+ uint16_t namevalue_base;
+
+ impl::compact_string<4, 2> name;
+ impl::compact_string<5, 3> value;
+
+ impl::compact_pointer_parent<xml_node_struct, 6> parent;
+
+ impl::compact_pointer<xml_node_struct, 8, 0> first_child;
+
+ impl::compact_pointer<xml_node_struct, 9> prev_sibling_c;
+ impl::compact_pointer<xml_node_struct, 10, 0> next_sibling;
+
+ impl::compact_pointer<xml_attribute_struct, 11, 0> first_attribute;
+ };
+}
+#else
+namespace pugi
+{
+ struct xml_attribute_struct
+ {
+ xml_attribute_struct(impl::xml_memory_page* page): name(0), value(0), prev_attribute_c(0), next_attribute(0)
+ {
+ header = PUGI__GETHEADER_IMPL(this, page, 0);
+ }
+
+ uintptr_t header;
+
+ char_t* name;
+ char_t* value;
+
+ xml_attribute_struct* prev_attribute_c;
+ xml_attribute_struct* next_attribute;
+ };
+
+ struct xml_node_struct
+ {
+ xml_node_struct(impl::xml_memory_page* page, xml_node_type type): name(0), value(0), parent(0), first_child(0), prev_sibling_c(0), next_sibling(0), first_attribute(0)
+ {
+ header = PUGI__GETHEADER_IMPL(this, page, type);
+ }
+
+ uintptr_t header;
+
+ char_t* name;
+ char_t* value;
+
+ xml_node_struct* parent;
+
+ xml_node_struct* first_child;
+
+ xml_node_struct* prev_sibling_c;
+ xml_node_struct* next_sibling;
+
+ xml_attribute_struct* first_attribute;
+ };
+}
+#endif
+
+PUGI__NS_BEGIN
+ struct xml_extra_buffer
+ {
+ char_t* buffer;
+ xml_extra_buffer* next;
+ };
+
+ struct xml_document_struct: public xml_node_struct, public xml_allocator
+ {
+ xml_document_struct(xml_memory_page* page): xml_node_struct(page, node_document), xml_allocator(page), buffer(0), extra_buffers(0)
+ {
+ }
+
+ const char_t* buffer;
+
+ xml_extra_buffer* extra_buffers;
+
+ #ifdef PUGIXML_COMPACT
+ compact_hash_table hash;
+ #endif
+ };
+
+ template <typename Object> inline xml_allocator& get_allocator(const Object* object)
+ {
+ assert(object);
+
+ return *PUGI__GETPAGE(object)->allocator;
+ }
+
+ template <typename Object> inline xml_document_struct& get_document(const Object* object)
+ {
+ assert(object);
+
+ return *static_cast<xml_document_struct*>(PUGI__GETPAGE(object)->allocator);
+ }
+PUGI__NS_END
+
+// Low-level DOM operations
+PUGI__NS_BEGIN
+ inline xml_attribute_struct* allocate_attribute(xml_allocator& alloc)
+ {
+ xml_memory_page* page;
+ void* memory = alloc.allocate_object(sizeof(xml_attribute_struct), page);
+ if (!memory) return 0;
+
+ return new (memory) xml_attribute_struct(page);
+ }
+
+ inline xml_node_struct* allocate_node(xml_allocator& alloc, xml_node_type type)
+ {
+ xml_memory_page* page;
+ void* memory = alloc.allocate_object(sizeof(xml_node_struct), page);
+ if (!memory) return 0;
+
+ return new (memory) xml_node_struct(page, type);
+ }
+
+ inline void destroy_attribute(xml_attribute_struct* a, xml_allocator& alloc)
+ {
+ if (a->header & impl::xml_memory_page_name_allocated_mask)
+ alloc.deallocate_string(a->name);
+
+ if (a->header & impl::xml_memory_page_value_allocated_mask)
+ alloc.deallocate_string(a->value);
+
+ alloc.deallocate_memory(a, sizeof(xml_attribute_struct), PUGI__GETPAGE(a));
+ }
+
+ inline void destroy_node(xml_node_struct* n, xml_allocator& alloc)
+ {
+ if (n->header & impl::xml_memory_page_name_allocated_mask)
+ alloc.deallocate_string(n->name);
+
+ if (n->header & impl::xml_memory_page_value_allocated_mask)
+ alloc.deallocate_string(n->value);
+
+ for (xml_attribute_struct* attr = n->first_attribute; attr; )
+ {
+ xml_attribute_struct* next = attr->next_attribute;
+
+ destroy_attribute(attr, alloc);
+
+ attr = next;
+ }
+
+ for (xml_node_struct* child = n->first_child; child; )
+ {
+ xml_node_struct* next = child->next_sibling;
+
+ destroy_node(child, alloc);
+
+ child = next;
+ }
+
+ alloc.deallocate_memory(n, sizeof(xml_node_struct), PUGI__GETPAGE(n));
+ }
+
+ inline void append_node(xml_node_struct* child, xml_node_struct* node)
+ {
+ child->parent = node;
+
+ xml_node_struct* head = node->first_child;
+
+ if (head)
+ {
+ xml_node_struct* tail = head->prev_sibling_c;
+
+ tail->next_sibling = child;
+ child->prev_sibling_c = tail;
+ head->prev_sibling_c = child;
+ }
+ else
+ {
+ node->first_child = child;
+ child->prev_sibling_c = child;
+ }
+ }
+
+ inline void prepend_node(xml_node_struct* child, xml_node_struct* node)
+ {
+ child->parent = node;
+
+ xml_node_struct* head = node->first_child;
+
+ if (head)
+ {
+ child->prev_sibling_c = head->prev_sibling_c;
+ head->prev_sibling_c = child;
+ }
+ else
+ child->prev_sibling_c = child;
+
+ child->next_sibling = head;
+ node->first_child = child;
+ }
+
+ inline void insert_node_after(xml_node_struct* child, xml_node_struct* node)
+ {
+ xml_node_struct* parent = node->parent;
+
+ child->parent = parent;
+
+ if (node->next_sibling)
+ node->next_sibling->prev_sibling_c = child;
+ else
+ parent->first_child->prev_sibling_c = child;
+
+ child->next_sibling = node->next_sibling;
+ child->prev_sibling_c = node;
+
+ node->next_sibling = child;
+ }
+
+ inline void insert_node_before(xml_node_struct* child, xml_node_struct* node)
+ {
+ xml_node_struct* parent = node->parent;
+
+ child->parent = parent;
+
+ if (node->prev_sibling_c->next_sibling)
+ node->prev_sibling_c->next_sibling = child;
+ else
+ parent->first_child = child;
+
+ child->prev_sibling_c = node->prev_sibling_c;
+ child->next_sibling = node;
+
+ node->prev_sibling_c = child;
+ }
+
+ inline void remove_node(xml_node_struct* node)
+ {
+ xml_node_struct* parent = node->parent;
+
+ if (node->next_sibling)
+ node->next_sibling->prev_sibling_c = node->prev_sibling_c;
+ else
+ parent->first_child->prev_sibling_c = node->prev_sibling_c;
+
+ if (node->prev_sibling_c->next_sibling)
+ node->prev_sibling_c->next_sibling = node->next_sibling;
+ else
+ parent->first_child = node->next_sibling;
+
+ node->parent = 0;
+ node->prev_sibling_c = 0;
+ node->next_sibling = 0;
+ }
+
+ inline void append_attribute(xml_attribute_struct* attr, xml_node_struct* node)
+ {
+ xml_attribute_struct* head = node->first_attribute;
+
+ if (head)
+ {
+ xml_attribute_struct* tail = head->prev_attribute_c;
+
+ tail->next_attribute = attr;
+ attr->prev_attribute_c = tail;
+ head->prev_attribute_c = attr;
+ }
+ else
+ {
+ node->first_attribute = attr;
+ attr->prev_attribute_c = attr;
+ }
+ }
+
+ inline void prepend_attribute(xml_attribute_struct* attr, xml_node_struct* node)
+ {
+ xml_attribute_struct* head = node->first_attribute;
+
+ if (head)
+ {
+ attr->prev_attribute_c = head->prev_attribute_c;
+ head->prev_attribute_c = attr;
+ }
+ else
+ attr->prev_attribute_c = attr;
+
+ attr->next_attribute = head;
+ node->first_attribute = attr;
+ }
+
+ inline void insert_attribute_after(xml_attribute_struct* attr, xml_attribute_struct* place, xml_node_struct* node)
+ {
+ if (place->next_attribute)
+ place->next_attribute->prev_attribute_c = attr;
+ else
+ node->first_attribute->prev_attribute_c = attr;
+
+ attr->next_attribute = place->next_attribute;
+ attr->prev_attribute_c = place;
+ place->next_attribute = attr;
+ }
+
+ inline void insert_attribute_before(xml_attribute_struct* attr, xml_attribute_struct* place, xml_node_struct* node)
+ {
+ if (place->prev_attribute_c->next_attribute)
+ place->prev_attribute_c->next_attribute = attr;
+ else
+ node->first_attribute = attr;
+
+ attr->prev_attribute_c = place->prev_attribute_c;
+ attr->next_attribute = place;
+ place->prev_attribute_c = attr;
+ }
+
+ inline void remove_attribute(xml_attribute_struct* attr, xml_node_struct* node)
+ {
+ if (attr->next_attribute)
+ attr->next_attribute->prev_attribute_c = attr->prev_attribute_c;
+ else
+ node->first_attribute->prev_attribute_c = attr->prev_attribute_c;
+
+ if (attr->prev_attribute_c->next_attribute)
+ attr->prev_attribute_c->next_attribute = attr->next_attribute;
+ else
+ node->first_attribute = attr->next_attribute;
+
+ attr->prev_attribute_c = 0;
+ attr->next_attribute = 0;
+ }
+
+ PUGI__FN_NO_INLINE xml_node_struct* append_new_node(xml_node_struct* node, xml_allocator& alloc, xml_node_type type = node_element)
+ {
+ if (!alloc.reserve()) return 0;
+
+ xml_node_struct* child = allocate_node(alloc, type);
+ if (!child) return 0;
+
+ append_node(child, node);
+
+ return child;
+ }
+
+ PUGI__FN_NO_INLINE xml_attribute_struct* append_new_attribute(xml_node_struct* node, xml_allocator& alloc)
+ {
+ if (!alloc.reserve()) return 0;
+
+ xml_attribute_struct* attr = allocate_attribute(alloc);
+ if (!attr) return 0;
+
+ append_attribute(attr, node);
+
+ return attr;
+ }
+PUGI__NS_END
+
+// Helper classes for code generation
+PUGI__NS_BEGIN
+ struct opt_false
+ {
+ enum { value = 0 };
+ };
+
+ struct opt_true
+ {
+ enum { value = 1 };
+ };
+PUGI__NS_END
+
+// Unicode utilities
+PUGI__NS_BEGIN
+ inline uint16_t endian_swap(uint16_t value)
+ {
+ return static_cast<uint16_t>(((value & 0xff) << 8) | (value >> 8));
+ }
+
+ inline uint32_t endian_swap(uint32_t value)
+ {
+ return ((value & 0xff) << 24) | ((value & 0xff00) << 8) | ((value & 0xff0000) >> 8) | (value >> 24);
+ }
+
+ struct utf8_counter
+ {
+ typedef size_t value_type;
+
+ static value_type low(value_type result, uint32_t ch)
+ {
+ // U+0000..U+007F
+ if (ch < 0x80) return result + 1;
+ // U+0080..U+07FF
+ else if (ch < 0x800) return result + 2;
+ // U+0800..U+FFFF
+ else return result + 3;
+ }
+
+ static value_type high(value_type result, uint32_t)
+ {
+ // U+10000..U+10FFFF
+ return result + 4;
+ }
+ };
+
+ struct utf8_writer
+ {
+ typedef uint8_t* value_type;
+
+ static value_type low(value_type result, uint32_t ch)
+ {
+ // U+0000..U+007F
+ if (ch < 0x80)
+ {
+ *result = static_cast<uint8_t>(ch);
+ return result + 1;
+ }
+ // U+0080..U+07FF
+ else if (ch < 0x800)
+ {
+ result[0] = static_cast<uint8_t>(0xC0 | (ch >> 6));
+ result[1] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
+ return result + 2;
+ }
+ // U+0800..U+FFFF
+ else
+ {
+ result[0] = static_cast<uint8_t>(0xE0 | (ch >> 12));
+ result[1] = static_cast<uint8_t>(0x80 | ((ch >> 6) & 0x3F));
+ result[2] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
+ return result + 3;
+ }
+ }
+
+ static value_type high(value_type result, uint32_t ch)
+ {
+ // U+10000..U+10FFFF
+ result[0] = static_cast<uint8_t>(0xF0 | (ch >> 18));
+ result[1] = static_cast<uint8_t>(0x80 | ((ch >> 12) & 0x3F));
+ result[2] = static_cast<uint8_t>(0x80 | ((ch >> 6) & 0x3F));
+ result[3] = static_cast<uint8_t>(0x80 | (ch & 0x3F));
+ return result + 4;
+ }
+
+ static value_type any(value_type result, uint32_t ch)
+ {
+ return (ch < 0x10000) ? low(result, ch) : high(result, ch);
+ }
+ };
+
+ struct utf16_counter
+ {
+ typedef size_t value_type;
+
+ static value_type low(value_type result, uint32_t)
+ {
+ return result + 1;
+ }
+
+ static value_type high(value_type result, uint32_t)
+ {
+ return result + 2;
+ }
+ };
+
+ struct utf16_writer
+ {
+ typedef uint16_t* value_type;
+
+ static value_type low(value_type result, uint32_t ch)
+ {
+ *result = static_cast<uint16_t>(ch);
+
+ return result + 1;
+ }
+
+ static value_type high(value_type result, uint32_t ch)
+ {
+ uint32_t msh = static_cast<uint32_t>(ch - 0x10000) >> 10;
+ uint32_t lsh = static_cast<uint32_t>(ch - 0x10000) & 0x3ff;
+
+ result[0] = static_cast<uint16_t>(0xD800 + msh);
+ result[1] = static_cast<uint16_t>(0xDC00 + lsh);
+
+ return result + 2;
+ }
+
+ static value_type any(value_type result, uint32_t ch)
+ {
+ return (ch < 0x10000) ? low(result, ch) : high(result, ch);
+ }
+ };
+
+ struct utf32_counter
+ {
+ typedef size_t value_type;
+
+ static value_type low(value_type result, uint32_t)
+ {
+ return result + 1;
+ }
+
+ static value_type high(value_type result, uint32_t)
+ {
+ return result + 1;
+ }
+ };
+
+ struct utf32_writer
+ {
+ typedef uint32_t* value_type;
+
+ static value_type low(value_type result, uint32_t ch)
+ {
+ *result = ch;
+
+ return result + 1;
+ }
+
+ static value_type high(value_type result, uint32_t ch)
+ {
+ *result = ch;
+
+ return result + 1;
+ }
+
+ static value_type any(value_type result, uint32_t ch)
+ {
+ *result = ch;
+
+ return result + 1;
+ }
+ };
+
+ struct latin1_writer
+ {
+ typedef uint8_t* value_type;
+
+ static value_type low(value_type result, uint32_t ch)
+ {
+ *result = static_cast<uint8_t>(ch > 255 ? '?' : ch);
+
+ return result + 1;
+ }
+
+ static value_type high(value_type result, uint32_t ch)
+ {
+ (void)ch;
+
+ *result = '?';
+
+ return result + 1;
+ }
+ };
+
+ struct utf8_decoder
+ {
+ typedef uint8_t type;
+
+ template <typename Traits> static inline typename Traits::value_type process(const uint8_t* data, size_t size, typename Traits::value_type result, Traits)
+ {
+ const uint8_t utf8_byte_mask = 0x3f;
+
+ while (size)
+ {
+ uint8_t lead = *data;
+
+ // 0xxxxxxx -> U+0000..U+007F
+ if (lead < 0x80)
+ {
+ result = Traits::low(result, lead);
+ data += 1;
+ size -= 1;
+
+ // process aligned single-byte (ascii) blocks
+ if ((reinterpret_cast<uintptr_t>(data) & 3) == 0)
+ {
+ // round-trip through void* to silence 'cast increases required alignment of target type' warnings
+ while (size >= 4 && (*static_cast<const uint32_t*>(static_cast<const void*>(data)) & 0x80808080) == 0)
+ {
+ result = Traits::low(result, data[0]);
+ result = Traits::low(result, data[1]);
+ result = Traits::low(result, data[2]);
+ result = Traits::low(result, data[3]);
+ data += 4;
+ size -= 4;
+ }
+ }
+ }
+ // 110xxxxx -> U+0080..U+07FF
+ else if (static_cast<unsigned int>(lead - 0xC0) < 0x20 && size >= 2 && (data[1] & 0xc0) == 0x80)
+ {
+ result = Traits::low(result, ((lead & ~0xC0) << 6) | (data[1] & utf8_byte_mask));
+ data += 2;
+ size -= 2;
+ }
+ // 1110xxxx -> U+0800-U+FFFF
+ else if (static_cast<unsigned int>(lead - 0xE0) < 0x10 && size >= 3 && (data[1] & 0xc0) == 0x80 && (data[2] & 0xc0) == 0x80)
+ {
+ result = Traits::low(result, ((lead & ~0xE0) << 12) | ((data[1] & utf8_byte_mask) << 6) | (data[2] & utf8_byte_mask));
+ data += 3;
+ size -= 3;
+ }
+ // 11110xxx -> U+10000..U+10FFFF
+ else if (static_cast<unsigned int>(lead - 0xF0) < 0x08 && size >= 4 && (data[1] & 0xc0) == 0x80 && (data[2] & 0xc0) == 0x80 && (data[3] & 0xc0) == 0x80)
+ {
+ result = Traits::high(result, ((lead & ~0xF0) << 18) | ((data[1] & utf8_byte_mask) << 12) | ((data[2] & utf8_byte_mask) << 6) | (data[3] & utf8_byte_mask));
+ data += 4;
+ size -= 4;
+ }
+ // 10xxxxxx or 11111xxx -> invalid
+ else
+ {
+ data += 1;
+ size -= 1;
+ }
+ }
+
+ return result;
+ }
+ };
+
+ template <typename opt_swap> struct utf16_decoder
+ {
+ typedef uint16_t type;
+
+ template <typename Traits> static inline typename Traits::value_type process(const uint16_t* data, size_t size, typename Traits::value_type result, Traits)
+ {
+ while (size)
+ {
+ uint16_t lead = opt_swap::value ? endian_swap(*data) : *data;
+
+ // U+0000..U+D7FF
+ if (lead < 0xD800)
+ {
+ result = Traits::low(result, lead);
+ data += 1;
+ size -= 1;
+ }
+ // U+E000..U+FFFF
+ else if (static_cast<unsigned int>(lead - 0xE000) < 0x2000)
+ {
+ result = Traits::low(result, lead);
+ data += 1;
+ size -= 1;
+ }
+ // surrogate pair lead
+ else if (static_cast<unsigned int>(lead - 0xD800) < 0x400 && size >= 2)
+ {
+ uint16_t next = opt_swap::value ? endian_swap(data[1]) : data[1];
+
+ if (static_cast<unsigned int>(next - 0xDC00) < 0x400)
+ {
+ result = Traits::high(result, 0x10000 + ((lead & 0x3ff) << 10) + (next & 0x3ff));
+ data += 2;
+ size -= 2;
+ }
+ else
+ {
+ data += 1;
+ size -= 1;
+ }
+ }
+ else
+ {
+ data += 1;
+ size -= 1;
+ }
+ }
+
+ return result;
+ }
+ };
+
+ template <typename opt_swap> struct utf32_decoder
+ {
+ typedef uint32_t type;
+
+ template <typename Traits> static inline typename Traits::value_type process(const uint32_t* data, size_t size, typename Traits::value_type result, Traits)
+ {
+ while (size)
+ {
+ uint32_t lead = opt_swap::value ? endian_swap(*data) : *data;
+
+ // U+0000..U+FFFF
+ if (lead < 0x10000)
+ {
+ result = Traits::low(result, lead);
+ data += 1;
+ size -= 1;
+ }
+ // U+10000..U+10FFFF
+ else
+ {
+ result = Traits::high(result, lead);
+ data += 1;
+ size -= 1;
+ }
+ }
+
+ return result;
+ }
+ };
+
+ struct latin1_decoder
+ {
+ typedef uint8_t type;
+
+ template <typename Traits> static inline typename Traits::value_type process(const uint8_t* data, size_t size, typename Traits::value_type result, Traits)
+ {
+ while (size)
+ {
+ result = Traits::low(result, *data);
+ data += 1;
+ size -= 1;
+ }
+
+ return result;
+ }
+ };
+
+ template <size_t size> struct wchar_selector;
+
+ template <> struct wchar_selector<2>
+ {
+ typedef uint16_t type;
+ typedef utf16_counter counter;
+ typedef utf16_writer writer;
+ typedef utf16_decoder<opt_false> decoder;
+ };
+
+ template <> struct wchar_selector<4>
+ {
+ typedef uint32_t type;
+ typedef utf32_counter counter;
+ typedef utf32_writer writer;
+ typedef utf32_decoder<opt_false> decoder;
+ };
+
+ typedef wchar_selector<sizeof(wchar_t)>::counter wchar_counter;
+ typedef wchar_selector<sizeof(wchar_t)>::writer wchar_writer;
+
+ struct wchar_decoder
+ {
+ typedef wchar_t type;
+
+ template <typename Traits> static inline typename Traits::value_type process(const wchar_t* data, size_t size, typename Traits::value_type result, Traits traits)
+ {
+ typedef wchar_selector<sizeof(wchar_t)>::decoder decoder;
+
+ return decoder::process(reinterpret_cast<const typename decoder::type*>(data), size, result, traits);
+ }
+ };
+
+#ifdef PUGIXML_WCHAR_MODE
+ PUGI__FN void convert_wchar_endian_swap(wchar_t* result, const wchar_t* data, size_t length)
+ {
+ for (size_t i = 0; i < length; ++i)
+ result[i] = static_cast<wchar_t>(endian_swap(static_cast<wchar_selector<sizeof(wchar_t)>::type>(data[i])));
+ }
+#endif
+PUGI__NS_END
+
+PUGI__NS_BEGIN
+ enum chartype_t
+ {
+ ct_parse_pcdata = 1, // \0, &, \r, <
+ ct_parse_attr = 2, // \0, &, \r, ', "
+ ct_parse_attr_ws = 4, // \0, &, \r, ', ", \n, tab
+ ct_space = 8, // \r, \n, space, tab
+ ct_parse_cdata = 16, // \0, ], >, \r
+ ct_parse_comment = 32, // \0, -, >, \r
+ ct_symbol = 64, // Any symbol > 127, a-z, A-Z, 0-9, _, :, -, .
+ ct_start_symbol = 128 // Any symbol > 127, a-z, A-Z, _, :
+ };
+
+ static const unsigned char chartype_table[256] =
+ {
+ 55, 0, 0, 0, 0, 0, 0, 0, 0, 12, 12, 0, 0, 63, 0, 0, // 0-15
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16-31
+ 8, 0, 6, 0, 0, 0, 7, 6, 0, 0, 0, 0, 0, 96, 64, 0, // 32-47
+ 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 192, 0, 1, 0, 48, 0, // 48-63
+ 0, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, // 64-79
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 0, 0, 16, 0, 192, // 80-95
+ 0, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, // 96-111
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 0, 0, 0, 0, 0, // 112-127
+
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, // 128+
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
+ 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192
+ };
+
+ enum chartypex_t
+ {
+ ctx_special_pcdata = 1, // Any symbol >= 0 and < 32 (except \t, \r, \n), &, <, >
+ ctx_special_attr = 2, // Any symbol >= 0 and < 32, &, <, ", '
+ ctx_start_symbol = 4, // Any symbol > 127, a-z, A-Z, _
+ ctx_digit = 8, // 0-9
+ ctx_symbol = 16 // Any symbol > 127, a-z, A-Z, 0-9, _, -, .
+ };
+
+ static const unsigned char chartypex_table[256] =
+ {
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 3, 3, 2, 3, 3, // 0-15
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, // 16-31
+ 0, 0, 2, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0, 16, 16, 0, // 32-47
+ 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 0, 0, 3, 0, 1, 0, // 48-63
+
+ 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // 64-79
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0, 0, 20, // 80-95
+ 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // 96-111
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 0, 0, 0, 0, 0, // 112-127
+
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // 128+
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
+ };
+
+#ifdef PUGIXML_WCHAR_MODE
+ #define PUGI__IS_CHARTYPE_IMPL(c, ct, table) ((static_cast<unsigned int>(c) < 128 ? table[static_cast<unsigned int>(c)] : table[128]) & (ct))
+#else
+ #define PUGI__IS_CHARTYPE_IMPL(c, ct, table) (table[static_cast<unsigned char>(c)] & (ct))
+#endif
+
+ #define PUGI__IS_CHARTYPE(c, ct) PUGI__IS_CHARTYPE_IMPL(c, ct, chartype_table)
+ #define PUGI__IS_CHARTYPEX(c, ct) PUGI__IS_CHARTYPE_IMPL(c, ct, chartypex_table)
+
+ PUGI__FN bool is_little_endian()
+ {
+ unsigned int ui = 1;
+
+ return *reinterpret_cast<unsigned char*>(&ui) == 1;
+ }
+
+ PUGI__FN xml_encoding get_wchar_encoding()
+ {
+ PUGI__STATIC_ASSERT(sizeof(wchar_t) == 2 || sizeof(wchar_t) == 4);
+
+ if (sizeof(wchar_t) == 2)
+ return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+ else
+ return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+ }
+
+ PUGI__FN bool parse_declaration_encoding(const uint8_t* data, size_t size, const uint8_t*& out_encoding, size_t& out_length)
+ {
+ #define PUGI__SCANCHAR(ch) { if (offset >= size || data[offset] != ch) return false; offset++; }
+ #define PUGI__SCANCHARTYPE(ct) { while (offset < size && PUGI__IS_CHARTYPE(data[offset], ct)) offset++; }
+
+ // check if we have a non-empty XML declaration
+ if (size < 6 || !((data[0] == '<') & (data[1] == '?') & (data[2] == 'x') & (data[3] == 'm') & (data[4] == 'l') && PUGI__IS_CHARTYPE(data[5], ct_space)))
+ return false;
+
+ // scan XML declaration until the encoding field
+ for (size_t i = 6; i + 1 < size; ++i)
+ {
+ // declaration can not contain ? in quoted values
+ if (data[i] == '?')
+ return false;
+
+ if (data[i] == 'e' && data[i + 1] == 'n')
+ {
+ size_t offset = i;
+
+ // encoding follows the version field which can't contain 'en' so this has to be the encoding if XML is well formed
+ PUGI__SCANCHAR('e'); PUGI__SCANCHAR('n'); PUGI__SCANCHAR('c'); PUGI__SCANCHAR('o');
+ PUGI__SCANCHAR('d'); PUGI__SCANCHAR('i'); PUGI__SCANCHAR('n'); PUGI__SCANCHAR('g');
+
+ // S? = S?
+ PUGI__SCANCHARTYPE(ct_space);
+ PUGI__SCANCHAR('=');
+ PUGI__SCANCHARTYPE(ct_space);
+
+ // the only two valid delimiters are ' and "
+ uint8_t delimiter = (offset < size && data[offset] == '"') ? '"' : '\'';
+
+ PUGI__SCANCHAR(delimiter);
+
+ size_t start = offset;
+
+ out_encoding = data + offset;
+
+ PUGI__SCANCHARTYPE(ct_symbol);
+
+ out_length = offset - start;
+
+ PUGI__SCANCHAR(delimiter);
+
+ return true;
+ }
+ }
+
+ return false;
+
+ #undef PUGI__SCANCHAR
+ #undef PUGI__SCANCHARTYPE
+ }
+
+ PUGI__FN xml_encoding guess_buffer_encoding(const uint8_t* data, size_t size)
+ {
+ // skip encoding autodetection if input buffer is too small
+ if (size < 4) return encoding_utf8;
+
+ uint8_t d0 = data[0], d1 = data[1], d2 = data[2], d3 = data[3];
+
+ // look for BOM in first few bytes
+ if (d0 == 0 && d1 == 0 && d2 == 0xfe && d3 == 0xff) return encoding_utf32_be;
+ if (d0 == 0xff && d1 == 0xfe && d2 == 0 && d3 == 0) return encoding_utf32_le;
+ if (d0 == 0xfe && d1 == 0xff) return encoding_utf16_be;
+ if (d0 == 0xff && d1 == 0xfe) return encoding_utf16_le;
+ if (d0 == 0xef && d1 == 0xbb && d2 == 0xbf) return encoding_utf8;
+
+ // look for <, <? or <?xm in various encodings
+ if (d0 == 0 && d1 == 0 && d2 == 0 && d3 == 0x3c) return encoding_utf32_be;
+ if (d0 == 0x3c && d1 == 0 && d2 == 0 && d3 == 0) return encoding_utf32_le;
+ if (d0 == 0 && d1 == 0x3c && d2 == 0 && d3 == 0x3f) return encoding_utf16_be;
+ if (d0 == 0x3c && d1 == 0 && d2 == 0x3f && d3 == 0) return encoding_utf16_le;
+
+ // look for utf16 < followed by node name (this may fail, but is better than utf8 since it's zero terminated so early)
+ if (d0 == 0 && d1 == 0x3c) return encoding_utf16_be;
+ if (d0 == 0x3c && d1 == 0) return encoding_utf16_le;
+
+ // no known BOM detected; parse declaration
+ const uint8_t* enc = 0;
+ size_t enc_length = 0;
+
+ if (d0 == 0x3c && d1 == 0x3f && d2 == 0x78 && d3 == 0x6d && parse_declaration_encoding(data, size, enc, enc_length))
+ {
+ // iso-8859-1 (case-insensitive)
+ if (enc_length == 10
+ && (enc[0] | ' ') == 'i' && (enc[1] | ' ') == 's' && (enc[2] | ' ') == 'o'
+ && enc[3] == '-' && enc[4] == '8' && enc[5] == '8' && enc[6] == '5' && enc[7] == '9'
+ && enc[8] == '-' && enc[9] == '1')
+ return encoding_latin1;
+
+ // latin1 (case-insensitive)
+ if (enc_length == 6
+ && (enc[0] | ' ') == 'l' && (enc[1] | ' ') == 'a' && (enc[2] | ' ') == 't'
+ && (enc[3] | ' ') == 'i' && (enc[4] | ' ') == 'n'
+ && enc[5] == '1')
+ return encoding_latin1;
+ }
+
+ return encoding_utf8;
+ }
+
+ PUGI__FN xml_encoding get_buffer_encoding(xml_encoding encoding, const void* contents, size_t size)
+ {
+ // replace wchar encoding with utf implementation
+ if (encoding == encoding_wchar) return get_wchar_encoding();
+
+ // replace utf16 encoding with utf16 with specific endianness
+ if (encoding == encoding_utf16) return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ // replace utf32 encoding with utf32 with specific endianness
+ if (encoding == encoding_utf32) return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ // only do autodetection if no explicit encoding is requested
+ if (encoding != encoding_auto) return encoding;
+
+ // try to guess encoding (based on XML specification, Appendix F.1)
+ const uint8_t* data = static_cast<const uint8_t*>(contents);
+
+ return guess_buffer_encoding(data, size);
+ }
+
+ PUGI__FN bool get_mutable_buffer(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
+ {
+ size_t length = size / sizeof(char_t);
+
+ if (is_mutable)
+ {
+ out_buffer = static_cast<char_t*>(const_cast<void*>(contents));
+ out_length = length;
+ }
+ else
+ {
+ char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!buffer) return false;
+
+ if (contents)
+ memcpy(buffer, contents, length * sizeof(char_t));
+ else
+ assert(length == 0);
+
+ buffer[length] = 0;
+
+ out_buffer = buffer;
+ out_length = length + 1;
+ }
+
+ return true;
+ }
+
+#ifdef PUGIXML_WCHAR_MODE
+ PUGI__FN bool need_endian_swap_utf(xml_encoding le, xml_encoding re)
+ {
+ return (le == encoding_utf16_be && re == encoding_utf16_le) || (le == encoding_utf16_le && re == encoding_utf16_be) ||
+ (le == encoding_utf32_be && re == encoding_utf32_le) || (le == encoding_utf32_le && re == encoding_utf32_be);
+ }
+
+ PUGI__FN bool convert_buffer_endian_swap(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
+ {
+ const char_t* data = static_cast<const char_t*>(contents);
+ size_t length = size / sizeof(char_t);
+
+ if (is_mutable)
+ {
+ char_t* buffer = const_cast<char_t*>(data);
+
+ convert_wchar_endian_swap(buffer, data, length);
+
+ out_buffer = buffer;
+ out_length = length;
+ }
+ else
+ {
+ char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!buffer) return false;
+
+ convert_wchar_endian_swap(buffer, data, length);
+ buffer[length] = 0;
+
+ out_buffer = buffer;
+ out_length = length + 1;
+ }
+
+ return true;
+ }
+
+ template <typename D> PUGI__FN bool convert_buffer_generic(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, D)
+ {
+ const typename D::type* data = static_cast<const typename D::type*>(contents);
+ size_t data_length = size / sizeof(typename D::type);
+
+ // first pass: get length in wchar_t units
+ size_t length = D::process(data, data_length, 0, wchar_counter());
+
+ // allocate buffer of suitable length
+ char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!buffer) return false;
+
+ // second pass: convert utf16 input to wchar_t
+ wchar_writer::value_type obegin = reinterpret_cast<wchar_writer::value_type>(buffer);
+ wchar_writer::value_type oend = D::process(data, data_length, obegin, wchar_writer());
+
+ assert(oend == obegin + length);
+ *oend = 0;
+
+ out_buffer = buffer;
+ out_length = length + 1;
+
+ return true;
+ }
+
+ PUGI__FN bool convert_buffer(char_t*& out_buffer, size_t& out_length, xml_encoding encoding, const void* contents, size_t size, bool is_mutable)
+ {
+ // get native encoding
+ xml_encoding wchar_encoding = get_wchar_encoding();
+
+ // fast path: no conversion required
+ if (encoding == wchar_encoding)
+ return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);
+
+ // only endian-swapping is required
+ if (need_endian_swap_utf(encoding, wchar_encoding))
+ return convert_buffer_endian_swap(out_buffer, out_length, contents, size, is_mutable);
+
+ // source encoding is utf8
+ if (encoding == encoding_utf8)
+ return convert_buffer_generic(out_buffer, out_length, contents, size, utf8_decoder());
+
+ // source encoding is utf16
+ if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ return (native_encoding == encoding) ?
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_false>()) :
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_true>());
+ }
+
+ // source encoding is utf32
+ if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ return (native_encoding == encoding) ?
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_false>()) :
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_true>());
+ }
+
+ // source encoding is latin1
+ if (encoding == encoding_latin1)
+ return convert_buffer_generic(out_buffer, out_length, contents, size, latin1_decoder());
+
+ assert(false && "Invalid encoding"); // unreachable
+ return false;
+ }
+#else
+ template <typename D> PUGI__FN bool convert_buffer_generic(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, D)
+ {
+ const typename D::type* data = static_cast<const typename D::type*>(contents);
+ size_t data_length = size / sizeof(typename D::type);
+
+ // first pass: get length in utf8 units
+ size_t length = D::process(data, data_length, 0, utf8_counter());
+
+ // allocate buffer of suitable length
+ char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!buffer) return false;
+
+ // second pass: convert utf16 input to utf8
+ uint8_t* obegin = reinterpret_cast<uint8_t*>(buffer);
+ uint8_t* oend = D::process(data, data_length, obegin, utf8_writer());
+
+ assert(oend == obegin + length);
+ *oend = 0;
+
+ out_buffer = buffer;
+ out_length = length + 1;
+
+ return true;
+ }
+
+ PUGI__FN size_t get_latin1_7bit_prefix_length(const uint8_t* data, size_t size)
+ {
+ for (size_t i = 0; i < size; ++i)
+ if (data[i] > 127)
+ return i;
+
+ return size;
+ }
+
+ PUGI__FN bool convert_buffer_latin1(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, bool is_mutable)
+ {
+ const uint8_t* data = static_cast<const uint8_t*>(contents);
+ size_t data_length = size;
+
+ // get size of prefix that does not need utf8 conversion
+ size_t prefix_length = get_latin1_7bit_prefix_length(data, data_length);
+ assert(prefix_length <= data_length);
+
+ const uint8_t* postfix = data + prefix_length;
+ size_t postfix_length = data_length - prefix_length;
+
+ // if no conversion is needed, just return the original buffer
+ if (postfix_length == 0) return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);
+
+ // first pass: get length in utf8 units
+ size_t length = prefix_length + latin1_decoder::process(postfix, postfix_length, 0, utf8_counter());
+
+ // allocate buffer of suitable length
+ char_t* buffer = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!buffer) return false;
+
+ // second pass: convert latin1 input to utf8
+ memcpy(buffer, data, prefix_length);
+
+ uint8_t* obegin = reinterpret_cast<uint8_t*>(buffer);
+ uint8_t* oend = latin1_decoder::process(postfix, postfix_length, obegin + prefix_length, utf8_writer());
+
+ assert(oend == obegin + length);
+ *oend = 0;
+
+ out_buffer = buffer;
+ out_length = length + 1;
+
+ return true;
+ }
+
+ PUGI__FN bool convert_buffer(char_t*& out_buffer, size_t& out_length, xml_encoding encoding, const void* contents, size_t size, bool is_mutable)
+ {
+ // fast path: no conversion required
+ if (encoding == encoding_utf8)
+ return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);
+
+ // source encoding is utf16
+ if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ return (native_encoding == encoding) ?
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_false>()) :
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf16_decoder<opt_true>());
+ }
+
+ // source encoding is utf32
+ if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ return (native_encoding == encoding) ?
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_false>()) :
+ convert_buffer_generic(out_buffer, out_length, contents, size, utf32_decoder<opt_true>());
+ }
+
+ // source encoding is latin1
+ if (encoding == encoding_latin1)
+ return convert_buffer_latin1(out_buffer, out_length, contents, size, is_mutable);
+
+ assert(false && "Invalid encoding"); // unreachable
+ return false;
+ }
+#endif
+
+ PUGI__FN size_t as_utf8_begin(const wchar_t* str, size_t length)
+ {
+ // get length in utf8 characters
+ return wchar_decoder::process(str, length, 0, utf8_counter());
+ }
+
+ PUGI__FN void as_utf8_end(char* buffer, size_t size, const wchar_t* str, size_t length)
+ {
+ // convert to utf8
+ uint8_t* begin = reinterpret_cast<uint8_t*>(buffer);
+ uint8_t* end = wchar_decoder::process(str, length, begin, utf8_writer());
+
+ assert(begin + size == end);
+ (void)!end;
+ (void)!size;
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN std::string as_utf8_impl(const wchar_t* str, size_t length)
+ {
+ // first pass: get length in utf8 characters
+ size_t size = as_utf8_begin(str, length);
+
+ // allocate resulting string
+ std::string result;
+ result.resize(size);
+
+ // second pass: convert to utf8
+ if (size > 0) as_utf8_end(&result[0], size, str, length);
+
+ return result;
+ }
+
+ PUGI__FN std::basic_string<wchar_t> as_wide_impl(const char* str, size_t size)
+ {
+ const uint8_t* data = reinterpret_cast<const uint8_t*>(str);
+
+ // first pass: get length in wchar_t units
+ size_t length = utf8_decoder::process(data, size, 0, wchar_counter());
+
+ // allocate resulting string
+ std::basic_string<wchar_t> result;
+ result.resize(length);
+
+ // second pass: convert to wchar_t
+ if (length > 0)
+ {
+ wchar_writer::value_type begin = reinterpret_cast<wchar_writer::value_type>(&result[0]);
+ wchar_writer::value_type end = utf8_decoder::process(data, size, begin, wchar_writer());
+
+ assert(begin + length == end);
+ (void)!end;
+ }
+
+ return result;
+ }
+#endif
+
+ template <typename Header>
+ inline bool strcpy_insitu_allow(size_t length, const Header& header, uintptr_t header_mask, char_t* target)
+ {
+ // never reuse shared memory
+ if (header & xml_memory_page_contents_shared_mask) return false;
+
+ size_t target_length = strlength(target);
+
+ // always reuse document buffer memory if possible
+ if ((header & header_mask) == 0) return target_length >= length;
+
+ // reuse heap memory if waste is not too great
+ const size_t reuse_threshold = 32;
+
+ return target_length >= length && (target_length < reuse_threshold || target_length - length < target_length / 2);
+ }
+
+ template <typename String, typename Header>
+ PUGI__FN bool strcpy_insitu(String& dest, Header& header, uintptr_t header_mask, const char_t* source, size_t source_length)
+ {
+ if (source_length == 0)
+ {
+ // empty string and null pointer are equivalent, so just deallocate old memory
+ xml_allocator* alloc = PUGI__GETPAGE_IMPL(header)->allocator;
+
+ if (header & header_mask) alloc->deallocate_string(dest);
+
+ // mark the string as not allocated
+ dest = 0;
+ header &= ~header_mask;
+
+ return true;
+ }
+ else if (dest && strcpy_insitu_allow(source_length, header, header_mask, dest))
+ {
+ // we can reuse old buffer, so just copy the new data (including zero terminator)
+ memcpy(dest, source, source_length * sizeof(char_t));
+ dest[source_length] = 0;
+
+ return true;
+ }
+ else
+ {
+ xml_allocator* alloc = PUGI__GETPAGE_IMPL(header)->allocator;
+
+ if (!alloc->reserve()) return false;
+
+ // allocate new buffer
+ char_t* buf = alloc->allocate_string(source_length + 1);
+ if (!buf) return false;
+
+ // copy the string (including zero terminator)
+ memcpy(buf, source, source_length * sizeof(char_t));
+ buf[source_length] = 0;
+
+ // deallocate old buffer (*after* the above to protect against overlapping memory and/or allocation failures)
+ if (header & header_mask) alloc->deallocate_string(dest);
+
+ // the string is now allocated, so set the flag
+ dest = buf;
+ header |= header_mask;
+
+ return true;
+ }
+ }
+
+ struct gap
+ {
+ char_t* end;
+ size_t size;
+
+ gap(): end(0), size(0)
+ {
+ }
+
+ // Push new gap, move s count bytes further (skipping the gap).
+ // Collapse previous gap.
+ void push(char_t*& s, size_t count)
+ {
+ if (end) // there was a gap already; collapse it
+ {
+ // Move [old_gap_end, new_gap_start) to [old_gap_start, ...)
+ assert(s >= end);
+ memmove(end - size, end, reinterpret_cast<char*>(s) - reinterpret_cast<char*>(end));
+ }
+
+ s += count; // end of current gap
+
+ // "merge" two gaps
+ end = s;
+ size += count;
+ }
+
+ // Collapse all gaps, return past-the-end pointer
+ char_t* flush(char_t* s)
+ {
+ if (end)
+ {
+ // Move [old_gap_end, current_pos) to [old_gap_start, ...)
+ assert(s >= end);
+ memmove(end - size, end, reinterpret_cast<char*>(s) - reinterpret_cast<char*>(end));
+
+ return s - size;
+ }
+ else return s;
+ }
+ };
+
+ PUGI__FN char_t* strconv_escape(char_t* s, gap& g)
+ {
+ char_t* stre = s + 1;
+
+ switch (*stre)
+ {
+ case '#': // &#...
+ {
+ unsigned int ucsc = 0;
+
+ if (stre[1] == 'x') // &#x... (hex code)
+ {
+ stre += 2;
+
+ char_t ch = *stre;
+
+ if (ch == ';') return stre;
+
+ for (;;)
+ {
+ if (static_cast<unsigned int>(ch - '0') <= 9)
+ ucsc = 16 * ucsc + (ch - '0');
+ else if (static_cast<unsigned int>((ch | ' ') - 'a') <= 5)
+ ucsc = 16 * ucsc + ((ch | ' ') - 'a' + 10);
+ else if (ch == ';')
+ break;
+ else // cancel
+ return stre;
+
+ ch = *++stre;
+ }
+
+ ++stre;
+ }
+ else // &#... (dec code)
+ {
+ char_t ch = *++stre;
+
+ if (ch == ';') return stre;
+
+ for (;;)
+ {
+ if (static_cast<unsigned int>(ch - '0') <= 9)
+ ucsc = 10 * ucsc + (ch - '0');
+ else if (ch == ';')
+ break;
+ else // cancel
+ return stre;
+
+ ch = *++stre;
+ }
+
+ ++stre;
+ }
+
+ #ifdef PUGIXML_WCHAR_MODE
+ s = reinterpret_cast<char_t*>(wchar_writer::any(reinterpret_cast<wchar_writer::value_type>(s), ucsc));
+ #else
+ s = reinterpret_cast<char_t*>(utf8_writer::any(reinterpret_cast<uint8_t*>(s), ucsc));
+ #endif
+
+ g.push(s, stre - s);
+ return stre;
+ }
+
+ case 'a': // &a
+ {
+ ++stre;
+
+ if (*stre == 'm') // &am
+ {
+ if (*++stre == 'p' && *++stre == ';') // &amp;
+ {
+ *s++ = '&';
+ ++stre;
+
+ g.push(s, stre - s);
+ return stre;
+ }
+ }
+ else if (*stre == 'p') // &ap
+ {
+ if (*++stre == 'o' && *++stre == 's' && *++stre == ';') // &apos;
+ {
+ *s++ = '\'';
+ ++stre;
+
+ g.push(s, stre - s);
+ return stre;
+ }
+ }
+ break;
+ }
+
+ case 'g': // &g
+ {
+ if (*++stre == 't' && *++stre == ';') // &gt;
+ {
+ *s++ = '>';
+ ++stre;
+
+ g.push(s, stre - s);
+ return stre;
+ }
+ break;
+ }
+
+ case 'l': // &l
+ {
+ if (*++stre == 't' && *++stre == ';') // &lt;
+ {
+ *s++ = '<';
+ ++stre;
+
+ g.push(s, stre - s);
+ return stre;
+ }
+ break;
+ }
+
+ case 'q': // &q
+ {
+ if (*++stre == 'u' && *++stre == 'o' && *++stre == 't' && *++stre == ';') // &quot;
+ {
+ *s++ = '"';
+ ++stre;
+
+ g.push(s, stre - s);
+ return stre;
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ return stre;
+ }
+
+ // Parser utilities
+ #define PUGI__ENDSWITH(c, e) ((c) == (e) || ((c) == 0 && endch == (e)))
+ #define PUGI__SKIPWS() { while (PUGI__IS_CHARTYPE(*s, ct_space)) ++s; }
+ #define PUGI__OPTSET(OPT) ( optmsk & (OPT) )
+ #define PUGI__PUSHNODE(TYPE) { cursor = append_new_node(cursor, *alloc, TYPE); if (!cursor) PUGI__THROW_ERROR(status_out_of_memory, s); }
+ #define PUGI__POPNODE() { cursor = cursor->parent; }
+ #define PUGI__SCANFOR(X) { while (*s != 0 && !(X)) ++s; }
+ #define PUGI__SCANWHILE(X) { while (X) ++s; }
+ #define PUGI__SCANWHILE_UNROLL(X) { for (;;) { char_t ss = s[0]; if (PUGI__UNLIKELY(!(X))) { break; } ss = s[1]; if (PUGI__UNLIKELY(!(X))) { s += 1; break; } ss = s[2]; if (PUGI__UNLIKELY(!(X))) { s += 2; break; } ss = s[3]; if (PUGI__UNLIKELY(!(X))) { s += 3; break; } s += 4; } }
+ #define PUGI__ENDSEG() { ch = *s; *s = 0; ++s; }
+ #define PUGI__THROW_ERROR(err, m) return error_offset = m, error_status = err, static_cast<char_t*>(0)
+ #define PUGI__CHECK_ERROR(err, m) { if (*s == 0) PUGI__THROW_ERROR(err, m); }
+
+ PUGI__FN char_t* strconv_comment(char_t* s, char_t endch)
+ {
+ gap g;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_comment));
+
+ if (*s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
+ {
+ *s++ = '\n'; // replace first one with 0x0a
+
+ if (*s == '\n') g.push(s, 1);
+ }
+ else if (s[0] == '-' && s[1] == '-' && PUGI__ENDSWITH(s[2], '>')) // comment ends here
+ {
+ *g.flush(s) = 0;
+
+ return s + (s[2] == '>' ? 3 : 2);
+ }
+ else if (*s == 0)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+
+ PUGI__FN char_t* strconv_cdata(char_t* s, char_t endch)
+ {
+ gap g;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_cdata));
+
+ if (*s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
+ {
+ *s++ = '\n'; // replace first one with 0x0a
+
+ if (*s == '\n') g.push(s, 1);
+ }
+ else if (s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>')) // CDATA ends here
+ {
+ *g.flush(s) = 0;
+
+ return s + 1;
+ }
+ else if (*s == 0)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+
+ typedef char_t* (*strconv_pcdata_t)(char_t*);
+
+ template <typename opt_trim, typename opt_eol, typename opt_escape> struct strconv_pcdata_impl
+ {
+ static char_t* parse(char_t* s)
+ {
+ gap g;
+
+ char_t* begin = s;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_pcdata));
+
+ if (*s == '<') // PCDATA ends here
+ {
+ char_t* end = g.flush(s);
+
+ if (opt_trim::value)
+ while (end > begin && PUGI__IS_CHARTYPE(end[-1], ct_space))
+ --end;
+
+ *end = 0;
+
+ return s + 1;
+ }
+ else if (opt_eol::value && *s == '\r') // Either a single 0x0d or 0x0d 0x0a pair
+ {
+ *s++ = '\n'; // replace first one with 0x0a
+
+ if (*s == '\n') g.push(s, 1);
+ }
+ else if (opt_escape::value && *s == '&')
+ {
+ s = strconv_escape(s, g);
+ }
+ else if (*s == 0)
+ {
+ char_t* end = g.flush(s);
+
+ if (opt_trim::value)
+ while (end > begin && PUGI__IS_CHARTYPE(end[-1], ct_space))
+ --end;
+
+ *end = 0;
+
+ return s;
+ }
+ else ++s;
+ }
+ }
+ };
+
+ PUGI__FN strconv_pcdata_t get_strconv_pcdata(unsigned int optmask)
+ {
+ PUGI__STATIC_ASSERT(parse_escapes == 0x10 && parse_eol == 0x20 && parse_trim_pcdata == 0x0800);
+
+ switch (((optmask >> 4) & 3) | ((optmask >> 9) & 4)) // get bitmask for flags (trim eol escapes); this simultaneously checks 3 options from assertion above
+ {
+ case 0: return strconv_pcdata_impl<opt_false, opt_false, opt_false>::parse;
+ case 1: return strconv_pcdata_impl<opt_false, opt_false, opt_true>::parse;
+ case 2: return strconv_pcdata_impl<opt_false, opt_true, opt_false>::parse;
+ case 3: return strconv_pcdata_impl<opt_false, opt_true, opt_true>::parse;
+ case 4: return strconv_pcdata_impl<opt_true, opt_false, opt_false>::parse;
+ case 5: return strconv_pcdata_impl<opt_true, opt_false, opt_true>::parse;
+ case 6: return strconv_pcdata_impl<opt_true, opt_true, opt_false>::parse;
+ case 7: return strconv_pcdata_impl<opt_true, opt_true, opt_true>::parse;
+ default: assert(false); return 0; // unreachable
+ }
+ }
+
+ typedef char_t* (*strconv_attribute_t)(char_t*, char_t);
+
+ template <typename opt_escape> struct strconv_attribute_impl
+ {
+ static char_t* parse_wnorm(char_t* s, char_t end_quote)
+ {
+ gap g;
+
+ // trim leading whitespaces
+ if (PUGI__IS_CHARTYPE(*s, ct_space))
+ {
+ char_t* str = s;
+
+ do ++str;
+ while (PUGI__IS_CHARTYPE(*str, ct_space));
+
+ g.push(s, str - s);
+ }
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr_ws | ct_space));
+
+ if (*s == end_quote)
+ {
+ char_t* str = g.flush(s);
+
+ do *str-- = 0;
+ while (PUGI__IS_CHARTYPE(*str, ct_space));
+
+ return s + 1;
+ }
+ else if (PUGI__IS_CHARTYPE(*s, ct_space))
+ {
+ *s++ = ' ';
+
+ if (PUGI__IS_CHARTYPE(*s, ct_space))
+ {
+ char_t* str = s + 1;
+ while (PUGI__IS_CHARTYPE(*str, ct_space)) ++str;
+
+ g.push(s, str - s);
+ }
+ }
+ else if (opt_escape::value && *s == '&')
+ {
+ s = strconv_escape(s, g);
+ }
+ else if (!*s)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+
+ static char_t* parse_wconv(char_t* s, char_t end_quote)
+ {
+ gap g;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr_ws));
+
+ if (*s == end_quote)
+ {
+ *g.flush(s) = 0;
+
+ return s + 1;
+ }
+ else if (PUGI__IS_CHARTYPE(*s, ct_space))
+ {
+ if (*s == '\r')
+ {
+ *s++ = ' ';
+
+ if (*s == '\n') g.push(s, 1);
+ }
+ else *s++ = ' ';
+ }
+ else if (opt_escape::value && *s == '&')
+ {
+ s = strconv_escape(s, g);
+ }
+ else if (!*s)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+
+ static char_t* parse_eol(char_t* s, char_t end_quote)
+ {
+ gap g;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr));
+
+ if (*s == end_quote)
+ {
+ *g.flush(s) = 0;
+
+ return s + 1;
+ }
+ else if (*s == '\r')
+ {
+ *s++ = '\n';
+
+ if (*s == '\n') g.push(s, 1);
+ }
+ else if (opt_escape::value && *s == '&')
+ {
+ s = strconv_escape(s, g);
+ }
+ else if (!*s)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+
+ static char_t* parse_simple(char_t* s, char_t end_quote)
+ {
+ gap g;
+
+ while (true)
+ {
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPE(ss, ct_parse_attr));
+
+ if (*s == end_quote)
+ {
+ *g.flush(s) = 0;
+
+ return s + 1;
+ }
+ else if (opt_escape::value && *s == '&')
+ {
+ s = strconv_escape(s, g);
+ }
+ else if (!*s)
+ {
+ return 0;
+ }
+ else ++s;
+ }
+ }
+ };
+
+ PUGI__FN strconv_attribute_t get_strconv_attribute(unsigned int optmask)
+ {
+ PUGI__STATIC_ASSERT(parse_escapes == 0x10 && parse_eol == 0x20 && parse_wconv_attribute == 0x40 && parse_wnorm_attribute == 0x80);
+
+ switch ((optmask >> 4) & 15) // get bitmask for flags (wnorm wconv eol escapes); this simultaneously checks 4 options from assertion above
+ {
+ case 0: return strconv_attribute_impl<opt_false>::parse_simple;
+ case 1: return strconv_attribute_impl<opt_true>::parse_simple;
+ case 2: return strconv_attribute_impl<opt_false>::parse_eol;
+ case 3: return strconv_attribute_impl<opt_true>::parse_eol;
+ case 4: return strconv_attribute_impl<opt_false>::parse_wconv;
+ case 5: return strconv_attribute_impl<opt_true>::parse_wconv;
+ case 6: return strconv_attribute_impl<opt_false>::parse_wconv;
+ case 7: return strconv_attribute_impl<opt_true>::parse_wconv;
+ case 8: return strconv_attribute_impl<opt_false>::parse_wnorm;
+ case 9: return strconv_attribute_impl<opt_true>::parse_wnorm;
+ case 10: return strconv_attribute_impl<opt_false>::parse_wnorm;
+ case 11: return strconv_attribute_impl<opt_true>::parse_wnorm;
+ case 12: return strconv_attribute_impl<opt_false>::parse_wnorm;
+ case 13: return strconv_attribute_impl<opt_true>::parse_wnorm;
+ case 14: return strconv_attribute_impl<opt_false>::parse_wnorm;
+ case 15: return strconv_attribute_impl<opt_true>::parse_wnorm;
+ default: assert(false); return 0; // unreachable
+ }
+ }
+
+ inline xml_parse_result make_parse_result(xml_parse_status status, ptrdiff_t offset = 0)
+ {
+ xml_parse_result result;
+ result.status = status;
+ result.offset = offset;
+
+ return result;
+ }
+
+ struct xml_parser
+ {
+ xml_allocator* alloc;
+ char_t* error_offset;
+ xml_parse_status error_status;
+
+ xml_parser(xml_allocator* alloc_): alloc(alloc_), error_offset(0), error_status(status_ok)
+ {
+ }
+
+ // DOCTYPE consists of nested sections of the following possible types:
+ // <!-- ... -->, <? ... ?>, "...", '...'
+ // <![...]]>
+ // <!...>
+ // First group can not contain nested groups
+ // Second group can contain nested groups of the same type
+ // Third group can contain all other groups
+ char_t* parse_doctype_primitive(char_t* s)
+ {
+ if (*s == '"' || *s == '\'')
+ {
+ // quoted string
+ char_t ch = *s++;
+ PUGI__SCANFOR(*s == ch);
+ if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ s++;
+ }
+ else if (s[0] == '<' && s[1] == '?')
+ {
+ // <? ... ?>
+ s += 2;
+ PUGI__SCANFOR(s[0] == '?' && s[1] == '>'); // no need for ENDSWITH because ?> can't terminate proper doctype
+ if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ s += 2;
+ }
+ else if (s[0] == '<' && s[1] == '!' && s[2] == '-' && s[3] == '-')
+ {
+ s += 4;
+ PUGI__SCANFOR(s[0] == '-' && s[1] == '-' && s[2] == '>'); // no need for ENDSWITH because --> can't terminate proper doctype
+ if (!*s) PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ s += 3;
+ }
+ else PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ return s;
+ }
+
+ char_t* parse_doctype_ignore(char_t* s)
+ {
+ size_t depth = 0;
+
+ assert(s[0] == '<' && s[1] == '!' && s[2] == '[');
+ s += 3;
+
+ while (*s)
+ {
+ if (s[0] == '<' && s[1] == '!' && s[2] == '[')
+ {
+ // nested ignore section
+ s += 3;
+ depth++;
+ }
+ else if (s[0] == ']' && s[1] == ']' && s[2] == '>')
+ {
+ // ignore section end
+ s += 3;
+
+ if (depth == 0)
+ return s;
+
+ depth--;
+ }
+ else s++;
+ }
+
+ PUGI__THROW_ERROR(status_bad_doctype, s);
+ }
+
+ char_t* parse_doctype_group(char_t* s, char_t endch)
+ {
+ size_t depth = 0;
+
+ assert((s[0] == '<' || s[0] == 0) && s[1] == '!');
+ s += 2;
+
+ while (*s)
+ {
+ if (s[0] == '<' && s[1] == '!' && s[2] != '-')
+ {
+ if (s[2] == '[')
+ {
+ // ignore
+ s = parse_doctype_ignore(s);
+ if (!s) return s;
+ }
+ else
+ {
+ // some control group
+ s += 2;
+ depth++;
+ }
+ }
+ else if (s[0] == '<' || s[0] == '"' || s[0] == '\'')
+ {
+ // unknown tag (forbidden), or some primitive group
+ s = parse_doctype_primitive(s);
+ if (!s) return s;
+ }
+ else if (*s == '>')
+ {
+ if (depth == 0)
+ return s;
+
+ depth--;
+ s++;
+ }
+ else s++;
+ }
+
+ if (depth != 0 || endch != '>') PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ return s;
+ }
+
+ char_t* parse_exclamation(char_t* s, xml_node_struct* cursor, unsigned int optmsk, char_t endch)
+ {
+ // parse node contents, starting with exclamation mark
+ ++s;
+
+ if (*s == '-') // '<!-...'
+ {
+ ++s;
+
+ if (*s == '-') // '<!--...'
+ {
+ ++s;
+
+ if (PUGI__OPTSET(parse_comments))
+ {
+ PUGI__PUSHNODE(node_comment); // Append a new node on the tree.
+ cursor->value = s; // Save the offset.
+ }
+
+ if (PUGI__OPTSET(parse_eol) && PUGI__OPTSET(parse_comments))
+ {
+ s = strconv_comment(s, endch);
+
+ if (!s) PUGI__THROW_ERROR(status_bad_comment, cursor->value);
+ }
+ else
+ {
+ // Scan for terminating '-->'.
+ PUGI__SCANFOR(s[0] == '-' && s[1] == '-' && PUGI__ENDSWITH(s[2], '>'));
+ PUGI__CHECK_ERROR(status_bad_comment, s);
+
+ if (PUGI__OPTSET(parse_comments))
+ *s = 0; // Zero-terminate this segment at the first terminating '-'.
+
+ s += (s[2] == '>' ? 3 : 2); // Step over the '\0->'.
+ }
+ }
+ else PUGI__THROW_ERROR(status_bad_comment, s);
+ }
+ else if (*s == '[')
+ {
+ // '<![CDATA[...'
+ if (*++s=='C' && *++s=='D' && *++s=='A' && *++s=='T' && *++s=='A' && *++s == '[')
+ {
+ ++s;
+
+ if (PUGI__OPTSET(parse_cdata))
+ {
+ PUGI__PUSHNODE(node_cdata); // Append a new node on the tree.
+ cursor->value = s; // Save the offset.
+
+ if (PUGI__OPTSET(parse_eol))
+ {
+ s = strconv_cdata(s, endch);
+
+ if (!s) PUGI__THROW_ERROR(status_bad_cdata, cursor->value);
+ }
+ else
+ {
+ // Scan for terminating ']]>'.
+ PUGI__SCANFOR(s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>'));
+ PUGI__CHECK_ERROR(status_bad_cdata, s);
+
+ *s++ = 0; // Zero-terminate this segment.
+ }
+ }
+ else // Flagged for discard, but we still have to scan for the terminator.
+ {
+ // Scan for terminating ']]>'.
+ PUGI__SCANFOR(s[0] == ']' && s[1] == ']' && PUGI__ENDSWITH(s[2], '>'));
+ PUGI__CHECK_ERROR(status_bad_cdata, s);
+
+ ++s;
+ }
+
+ s += (s[1] == '>' ? 2 : 1); // Step over the last ']>'.
+ }
+ else PUGI__THROW_ERROR(status_bad_cdata, s);
+ }
+ else if (s[0] == 'D' && s[1] == 'O' && s[2] == 'C' && s[3] == 'T' && s[4] == 'Y' && s[5] == 'P' && PUGI__ENDSWITH(s[6], 'E'))
+ {
+ s -= 2;
+
+ if (cursor->parent) PUGI__THROW_ERROR(status_bad_doctype, s);
+
+ char_t* mark = s + 9;
+
+ s = parse_doctype_group(s, endch);
+ if (!s) return s;
+
+ assert((*s == 0 && endch == '>') || *s == '>');
+ if (*s) *s++ = 0;
+
+ if (PUGI__OPTSET(parse_doctype))
+ {
+ while (PUGI__IS_CHARTYPE(*mark, ct_space)) ++mark;
+
+ PUGI__PUSHNODE(node_doctype);
+
+ cursor->value = mark;
+ }
+ }
+ else if (*s == 0 && endch == '-') PUGI__THROW_ERROR(status_bad_comment, s);
+ else if (*s == 0 && endch == '[') PUGI__THROW_ERROR(status_bad_cdata, s);
+ else PUGI__THROW_ERROR(status_unrecognized_tag, s);
+
+ return s;
+ }
+
+ char_t* parse_question(char_t* s, xml_node_struct*& ref_cursor, unsigned int optmsk, char_t endch)
+ {
+ // load into registers
+ xml_node_struct* cursor = ref_cursor;
+ char_t ch = 0;
+
+ // parse node contents, starting with question mark
+ ++s;
+
+ // read PI target
+ char_t* target = s;
+
+ if (!PUGI__IS_CHARTYPE(*s, ct_start_symbol)) PUGI__THROW_ERROR(status_bad_pi, s);
+
+ PUGI__SCANWHILE(PUGI__IS_CHARTYPE(*s, ct_symbol));
+ PUGI__CHECK_ERROR(status_bad_pi, s);
+
+ // determine node type; stricmp / strcasecmp is not portable
+ bool declaration = (target[0] | ' ') == 'x' && (target[1] | ' ') == 'm' && (target[2] | ' ') == 'l' && target + 3 == s;
+
+ if (declaration ? PUGI__OPTSET(parse_declaration) : PUGI__OPTSET(parse_pi))
+ {
+ if (declaration)
+ {
+ // disallow non top-level declarations
+ if (cursor->parent) PUGI__THROW_ERROR(status_bad_pi, s);
+
+ PUGI__PUSHNODE(node_declaration);
+ }
+ else
+ {
+ PUGI__PUSHNODE(node_pi);
+ }
+
+ cursor->name = target;
+
+ PUGI__ENDSEG();
+
+ // parse value/attributes
+ if (ch == '?')
+ {
+ // empty node
+ if (!PUGI__ENDSWITH(*s, '>')) PUGI__THROW_ERROR(status_bad_pi, s);
+ s += (*s == '>');
+
+ PUGI__POPNODE();
+ }
+ else if (PUGI__IS_CHARTYPE(ch, ct_space))
+ {
+ PUGI__SKIPWS();
+
+ // scan for tag end
+ char_t* value = s;
+
+ PUGI__SCANFOR(s[0] == '?' && PUGI__ENDSWITH(s[1], '>'));
+ PUGI__CHECK_ERROR(status_bad_pi, s);
+
+ if (declaration)
+ {
+ // replace ending ? with / so that 'element' terminates properly
+ *s = '/';
+
+ // we exit from this function with cursor at node_declaration, which is a signal to parse() to go to LOC_ATTRIBUTES
+ s = value;
+ }
+ else
+ {
+ // store value and step over >
+ cursor->value = value;
+
+ PUGI__POPNODE();
+
+ PUGI__ENDSEG();
+
+ s += (*s == '>');
+ }
+ }
+ else PUGI__THROW_ERROR(status_bad_pi, s);
+ }
+ else
+ {
+ // scan for tag end
+ PUGI__SCANFOR(s[0] == '?' && PUGI__ENDSWITH(s[1], '>'));
+ PUGI__CHECK_ERROR(status_bad_pi, s);
+
+ s += (s[1] == '>' ? 2 : 1);
+ }
+
+ // store from registers
+ ref_cursor = cursor;
+
+ return s;
+ }
+
+ char_t* parse_tree(char_t* s, xml_node_struct* root, unsigned int optmsk, char_t endch)
+ {
+ strconv_attribute_t strconv_attribute = get_strconv_attribute(optmsk);
+ strconv_pcdata_t strconv_pcdata = get_strconv_pcdata(optmsk);
+
+ char_t ch = 0;
+ xml_node_struct* cursor = root;
+ char_t* mark = s;
+
+ while (*s != 0)
+ {
+ if (*s == '<')
+ {
+ ++s;
+
+ LOC_TAG:
+ if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) // '<#...'
+ {
+ PUGI__PUSHNODE(node_element); // Append a new node to the tree.
+
+ cursor->name = s;
+
+ PUGI__SCANWHILE_UNROLL(PUGI__IS_CHARTYPE(ss, ct_symbol)); // Scan for a terminator.
+ PUGI__ENDSEG(); // Save char in 'ch', terminate & step over.
+
+ if (ch == '>')
+ {
+ // end of tag
+ }
+ else if (PUGI__IS_CHARTYPE(ch, ct_space))
+ {
+ LOC_ATTRIBUTES:
+ while (true)
+ {
+ PUGI__SKIPWS(); // Eat any whitespace.
+
+ if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) // <... #...
+ {
+ xml_attribute_struct* a = append_new_attribute(cursor, *alloc); // Make space for this attribute.
+ if (!a) PUGI__THROW_ERROR(status_out_of_memory, s);
+
+ a->name = s; // Save the offset.
+
+ PUGI__SCANWHILE_UNROLL(PUGI__IS_CHARTYPE(ss, ct_symbol)); // Scan for a terminator.
+ PUGI__ENDSEG(); // Save char in 'ch', terminate & step over.
+
+ if (PUGI__IS_CHARTYPE(ch, ct_space))
+ {
+ PUGI__SKIPWS(); // Eat any whitespace.
+
+ ch = *s;
+ ++s;
+ }
+
+ if (ch == '=') // '<... #=...'
+ {
+ PUGI__SKIPWS(); // Eat any whitespace.
+
+ if (*s == '"' || *s == '\'') // '<... #="...'
+ {
+ ch = *s; // Save quote char to avoid breaking on "''" -or- '""'.
+ ++s; // Step over the quote.
+ a->value = s; // Save the offset.
+
+ s = strconv_attribute(s, ch);
+
+ if (!s) PUGI__THROW_ERROR(status_bad_attribute, a->value);
+
+ // After this line the loop continues from the start;
+ // Whitespaces, / and > are ok, symbols and EOF are wrong,
+ // everything else will be detected
+ if (PUGI__IS_CHARTYPE(*s, ct_start_symbol)) PUGI__THROW_ERROR(status_bad_attribute, s);
+ }
+ else PUGI__THROW_ERROR(status_bad_attribute, s);
+ }
+ else PUGI__THROW_ERROR(status_bad_attribute, s);
+ }
+ else if (*s == '/')
+ {
+ ++s;
+
+ if (*s == '>')
+ {
+ PUGI__POPNODE();
+ s++;
+ break;
+ }
+ else if (*s == 0 && endch == '>')
+ {
+ PUGI__POPNODE();
+ break;
+ }
+ else PUGI__THROW_ERROR(status_bad_start_element, s);
+ }
+ else if (*s == '>')
+ {
+ ++s;
+
+ break;
+ }
+ else if (*s == 0 && endch == '>')
+ {
+ break;
+ }
+ else PUGI__THROW_ERROR(status_bad_start_element, s);
+ }
+
+ // !!!
+ }
+ else if (ch == '/') // '<#.../'
+ {
+ if (!PUGI__ENDSWITH(*s, '>')) PUGI__THROW_ERROR(status_bad_start_element, s);
+
+ PUGI__POPNODE(); // Pop.
+
+ s += (*s == '>');
+ }
+ else if (ch == 0)
+ {
+ // we stepped over null terminator, backtrack & handle closing tag
+ --s;
+
+ if (endch != '>') PUGI__THROW_ERROR(status_bad_start_element, s);
+ }
+ else PUGI__THROW_ERROR(status_bad_start_element, s);
+ }
+ else if (*s == '/')
+ {
+ ++s;
+
+ mark = s;
+
+ char_t* name = cursor->name;
+ if (!name) PUGI__THROW_ERROR(status_end_element_mismatch, mark);
+
+ while (PUGI__IS_CHARTYPE(*s, ct_symbol))
+ {
+ if (*s++ != *name++) PUGI__THROW_ERROR(status_end_element_mismatch, mark);
+ }
+
+ if (*name)
+ {
+ if (*s == 0 && name[0] == endch && name[1] == 0) PUGI__THROW_ERROR(status_bad_end_element, s);
+ else PUGI__THROW_ERROR(status_end_element_mismatch, mark);
+ }
+
+ PUGI__POPNODE(); // Pop.
+
+ PUGI__SKIPWS();
+
+ if (*s == 0)
+ {
+ if (endch != '>') PUGI__THROW_ERROR(status_bad_end_element, s);
+ }
+ else
+ {
+ if (*s != '>') PUGI__THROW_ERROR(status_bad_end_element, s);
+ ++s;
+ }
+ }
+ else if (*s == '?') // '<?...'
+ {
+ s = parse_question(s, cursor, optmsk, endch);
+ if (!s) return s;
+
+ assert(cursor);
+ if (PUGI__NODETYPE(cursor) == node_declaration) goto LOC_ATTRIBUTES;
+ }
+ else if (*s == '!') // '<!...'
+ {
+ s = parse_exclamation(s, cursor, optmsk, endch);
+ if (!s) return s;
+ }
+ else if (*s == 0 && endch == '?') PUGI__THROW_ERROR(status_bad_pi, s);
+ else PUGI__THROW_ERROR(status_unrecognized_tag, s);
+ }
+ else
+ {
+ mark = s; // Save this offset while searching for a terminator.
+
+ PUGI__SKIPWS(); // Eat whitespace if no genuine PCDATA here.
+
+ if (*s == '<' || !*s)
+ {
+ // We skipped some whitespace characters because otherwise we would take the tag branch instead of PCDATA one
+ assert(mark != s);
+
+ if (!PUGI__OPTSET(parse_ws_pcdata | parse_ws_pcdata_single) || PUGI__OPTSET(parse_trim_pcdata))
+ {
+ continue;
+ }
+ else if (PUGI__OPTSET(parse_ws_pcdata_single))
+ {
+ if (s[0] != '<' || s[1] != '/' || cursor->first_child) continue;
+ }
+ }
+
+ if (!PUGI__OPTSET(parse_trim_pcdata))
+ s = mark;
+
+ if (cursor->parent || PUGI__OPTSET(parse_fragment))
+ {
+ if (PUGI__OPTSET(parse_embed_pcdata) && cursor->parent && !cursor->first_child && !cursor->value)
+ {
+ cursor->value = s; // Save the offset.
+ }
+ else
+ {
+ PUGI__PUSHNODE(node_pcdata); // Append a new node on the tree.
+
+ cursor->value = s; // Save the offset.
+
+ PUGI__POPNODE(); // Pop since this is a standalone.
+ }
+
+ s = strconv_pcdata(s);
+
+ if (!*s) break;
+ }
+ else
+ {
+ PUGI__SCANFOR(*s == '<'); // '...<'
+ if (!*s) break;
+
+ ++s;
+ }
+
+ // We're after '<'
+ goto LOC_TAG;
+ }
+ }
+
+ // check that last tag is closed
+ if (cursor != root) PUGI__THROW_ERROR(status_end_element_mismatch, s);
+
+ return s;
+ }
+
+ #ifdef PUGIXML_WCHAR_MODE
+ static char_t* parse_skip_bom(char_t* s)
+ {
+ unsigned int bom = 0xfeff;
+ return (s[0] == static_cast<wchar_t>(bom)) ? s + 1 : s;
+ }
+ #else
+ static char_t* parse_skip_bom(char_t* s)
+ {
+ return (s[0] == '\xef' && s[1] == '\xbb' && s[2] == '\xbf') ? s + 3 : s;
+ }
+ #endif
+
+ static bool has_element_node_siblings(xml_node_struct* node)
+ {
+ while (node)
+ {
+ if (PUGI__NODETYPE(node) == node_element) return true;
+
+ node = node->next_sibling;
+ }
+
+ return false;
+ }
+
+ static xml_parse_result parse(char_t* buffer, size_t length, xml_document_struct* xmldoc, xml_node_struct* root, unsigned int optmsk)
+ {
+ // early-out for empty documents
+ if (length == 0)
+ return make_parse_result(PUGI__OPTSET(parse_fragment) ? status_ok : status_no_document_element);
+
+ // get last child of the root before parsing
+ xml_node_struct* last_root_child = root->first_child ? root->first_child->prev_sibling_c + 0 : 0;
+
+ // create parser on stack
+ xml_parser parser(static_cast<xml_allocator*>(xmldoc));
+
+ // save last character and make buffer zero-terminated (speeds up parsing)
+ char_t endch = buffer[length - 1];
+ buffer[length - 1] = 0;
+
+ // skip BOM to make sure it does not end up as part of parse output
+ char_t* buffer_data = parse_skip_bom(buffer);
+
+ // perform actual parsing
+ parser.parse_tree(buffer_data, root, optmsk, endch);
+
+ xml_parse_result result = make_parse_result(parser.error_status, parser.error_offset ? parser.error_offset - buffer : 0);
+ assert(result.offset >= 0 && static_cast<size_t>(result.offset) <= length);
+
+ if (result)
+ {
+ // since we removed last character, we have to handle the only possible false positive (stray <)
+ if (endch == '<')
+ return make_parse_result(status_unrecognized_tag, length - 1);
+
+ // check if there are any element nodes parsed
+ xml_node_struct* first_root_child_parsed = last_root_child ? last_root_child->next_sibling + 0 : root->first_child+ 0;
+
+ if (!PUGI__OPTSET(parse_fragment) && !has_element_node_siblings(first_root_child_parsed))
+ return make_parse_result(status_no_document_element, length - 1);
+ }
+ else
+ {
+ // roll back offset if it occurs on a null terminator in the source buffer
+ if (result.offset > 0 && static_cast<size_t>(result.offset) == length - 1 && endch == 0)
+ result.offset--;
+ }
+
+ return result;
+ }
+ };
+
+ // Output facilities
+ PUGI__FN xml_encoding get_write_native_encoding()
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ return get_wchar_encoding();
+ #else
+ return encoding_utf8;
+ #endif
+ }
+
+ PUGI__FN xml_encoding get_write_encoding(xml_encoding encoding)
+ {
+ // replace wchar encoding with utf implementation
+ if (encoding == encoding_wchar) return get_wchar_encoding();
+
+ // replace utf16 encoding with utf16 with specific endianness
+ if (encoding == encoding_utf16) return is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ // replace utf32 encoding with utf32 with specific endianness
+ if (encoding == encoding_utf32) return is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ // only do autodetection if no explicit encoding is requested
+ if (encoding != encoding_auto) return encoding;
+
+ // assume utf8 encoding
+ return encoding_utf8;
+ }
+
+ template <typename D, typename T> PUGI__FN size_t convert_buffer_output_generic(typename T::value_type dest, const char_t* data, size_t length, D, T)
+ {
+ PUGI__STATIC_ASSERT(sizeof(char_t) == sizeof(typename D::type));
+
+ typename T::value_type end = D::process(reinterpret_cast<const typename D::type*>(data), length, dest, T());
+
+ return static_cast<size_t>(end - dest) * sizeof(*dest);
+ }
+
+ template <typename D, typename T> PUGI__FN size_t convert_buffer_output_generic(typename T::value_type dest, const char_t* data, size_t length, D, T, bool opt_swap)
+ {
+ PUGI__STATIC_ASSERT(sizeof(char_t) == sizeof(typename D::type));
+
+ typename T::value_type end = D::process(reinterpret_cast<const typename D::type*>(data), length, dest, T());
+
+ if (opt_swap)
+ {
+ for (typename T::value_type i = dest; i != end; ++i)
+ *i = endian_swap(*i);
+ }
+
+ return static_cast<size_t>(end - dest) * sizeof(*dest);
+ }
+
+#ifdef PUGIXML_WCHAR_MODE
+ PUGI__FN size_t get_valid_length(const char_t* data, size_t length)
+ {
+ if (length < 1) return 0;
+
+ // discard last character if it's the lead of a surrogate pair
+ return (sizeof(wchar_t) == 2 && static_cast<unsigned int>(static_cast<uint16_t>(data[length - 1]) - 0xD800) < 0x400) ? length - 1 : length;
+ }
+
+ PUGI__FN size_t convert_buffer_output(char_t* r_char, uint8_t* r_u8, uint16_t* r_u16, uint32_t* r_u32, const char_t* data, size_t length, xml_encoding encoding)
+ {
+ // only endian-swapping is required
+ if (need_endian_swap_utf(encoding, get_wchar_encoding()))
+ {
+ convert_wchar_endian_swap(r_char, data, length);
+
+ return length * sizeof(char_t);
+ }
+
+ // convert to utf8
+ if (encoding == encoding_utf8)
+ return convert_buffer_output_generic(r_u8, data, length, wchar_decoder(), utf8_writer());
+
+ // convert to utf16
+ if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ return convert_buffer_output_generic(r_u16, data, length, wchar_decoder(), utf16_writer(), native_encoding != encoding);
+ }
+
+ // convert to utf32
+ if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ return convert_buffer_output_generic(r_u32, data, length, wchar_decoder(), utf32_writer(), native_encoding != encoding);
+ }
+
+ // convert to latin1
+ if (encoding == encoding_latin1)
+ return convert_buffer_output_generic(r_u8, data, length, wchar_decoder(), latin1_writer());
+
+ assert(false && "Invalid encoding"); // unreachable
+ return 0;
+ }
+#else
+ PUGI__FN size_t get_valid_length(const char_t* data, size_t length)
+ {
+ if (length < 5) return 0;
+
+ for (size_t i = 1; i <= 4; ++i)
+ {
+ uint8_t ch = static_cast<uint8_t>(data[length - i]);
+
+ // either a standalone character or a leading one
+ if ((ch & 0xc0) != 0x80) return length - i;
+ }
+
+ // there are four non-leading characters at the end, sequence tail is broken so might as well process the whole chunk
+ return length;
+ }
+
+ PUGI__FN size_t convert_buffer_output(char_t* /* r_char */, uint8_t* r_u8, uint16_t* r_u16, uint32_t* r_u32, const char_t* data, size_t length, xml_encoding encoding)
+ {
+ if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;
+
+ return convert_buffer_output_generic(r_u16, data, length, utf8_decoder(), utf16_writer(), native_encoding != encoding);
+ }
+
+ if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
+ {
+ xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;
+
+ return convert_buffer_output_generic(r_u32, data, length, utf8_decoder(), utf32_writer(), native_encoding != encoding);
+ }
+
+ if (encoding == encoding_latin1)
+ return convert_buffer_output_generic(r_u8, data, length, utf8_decoder(), latin1_writer());
+
+ assert(false && "Invalid encoding"); // unreachable
+ return 0;
+ }
+#endif
+
+ class xml_buffered_writer
+ {
+ xml_buffered_writer(const xml_buffered_writer&);
+ xml_buffered_writer& operator=(const xml_buffered_writer&);
+
+ public:
+ xml_buffered_writer(xml_writer& writer_, xml_encoding user_encoding): writer(writer_), bufsize(0), encoding(get_write_encoding(user_encoding))
+ {
+ PUGI__STATIC_ASSERT(bufcapacity >= 8);
+ }
+
+ size_t flush()
+ {
+ flush(buffer, bufsize);
+ bufsize = 0;
+ return 0;
+ }
+
+ void flush(const char_t* data, size_t size)
+ {
+ if (size == 0) return;
+
+ // fast path, just write data
+ if (encoding == get_write_native_encoding())
+ writer.write(data, size * sizeof(char_t));
+ else
+ {
+ // convert chunk
+ size_t result = convert_buffer_output(scratch.data_char, scratch.data_u8, scratch.data_u16, scratch.data_u32, data, size, encoding);
+ assert(result <= sizeof(scratch));
+
+ // write data
+ writer.write(scratch.data_u8, result);
+ }
+ }
+
+ void write_direct(const char_t* data, size_t length)
+ {
+ // flush the remaining buffer contents
+ flush();
+
+ // handle large chunks
+ if (length > bufcapacity)
+ {
+ if (encoding == get_write_native_encoding())
+ {
+ // fast path, can just write data chunk
+ writer.write(data, length * sizeof(char_t));
+ return;
+ }
+
+ // need to convert in suitable chunks
+ while (length > bufcapacity)
+ {
+ // get chunk size by selecting such number of characters that are guaranteed to fit into scratch buffer
+ // and form a complete codepoint sequence (i.e. discard start of last codepoint if necessary)
+ size_t chunk_size = get_valid_length(data, bufcapacity);
+ assert(chunk_size);
+
+ // convert chunk and write
+ flush(data, chunk_size);
+
+ // iterate
+ data += chunk_size;
+ length -= chunk_size;
+ }
+
+ // small tail is copied below
+ bufsize = 0;
+ }
+
+ memcpy(buffer + bufsize, data, length * sizeof(char_t));
+ bufsize += length;
+ }
+
+ void write_buffer(const char_t* data, size_t length)
+ {
+ size_t offset = bufsize;
+
+ if (offset + length <= bufcapacity)
+ {
+ memcpy(buffer + offset, data, length * sizeof(char_t));
+ bufsize = offset + length;
+ }
+ else
+ {
+ write_direct(data, length);
+ }
+ }
+
+ void write_string(const char_t* data)
+ {
+ // write the part of the string that fits in the buffer
+ size_t offset = bufsize;
+
+ while (*data && offset < bufcapacity)
+ buffer[offset++] = *data++;
+
+ // write the rest
+ if (offset < bufcapacity)
+ {
+ bufsize = offset;
+ }
+ else
+ {
+ // backtrack a bit if we have split the codepoint
+ size_t length = offset - bufsize;
+ size_t extra = length - get_valid_length(data - length, length);
+
+ bufsize = offset - extra;
+
+ write_direct(data - extra, strlength(data) + extra);
+ }
+ }
+
+ void write(char_t d0)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 1) offset = flush();
+
+ buffer[offset + 0] = d0;
+ bufsize = offset + 1;
+ }
+
+ void write(char_t d0, char_t d1)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 2) offset = flush();
+
+ buffer[offset + 0] = d0;
+ buffer[offset + 1] = d1;
+ bufsize = offset + 2;
+ }
+
+ void write(char_t d0, char_t d1, char_t d2)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 3) offset = flush();
+
+ buffer[offset + 0] = d0;
+ buffer[offset + 1] = d1;
+ buffer[offset + 2] = d2;
+ bufsize = offset + 3;
+ }
+
+ void write(char_t d0, char_t d1, char_t d2, char_t d3)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 4) offset = flush();
+
+ buffer[offset + 0] = d0;
+ buffer[offset + 1] = d1;
+ buffer[offset + 2] = d2;
+ buffer[offset + 3] = d3;
+ bufsize = offset + 4;
+ }
+
+ void write(char_t d0, char_t d1, char_t d2, char_t d3, char_t d4)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 5) offset = flush();
+
+ buffer[offset + 0] = d0;
+ buffer[offset + 1] = d1;
+ buffer[offset + 2] = d2;
+ buffer[offset + 3] = d3;
+ buffer[offset + 4] = d4;
+ bufsize = offset + 5;
+ }
+
+ void write(char_t d0, char_t d1, char_t d2, char_t d3, char_t d4, char_t d5)
+ {
+ size_t offset = bufsize;
+ if (offset > bufcapacity - 6) offset = flush();
+
+ buffer[offset + 0] = d0;
+ buffer[offset + 1] = d1;
+ buffer[offset + 2] = d2;
+ buffer[offset + 3] = d3;
+ buffer[offset + 4] = d4;
+ buffer[offset + 5] = d5;
+ bufsize = offset + 6;
+ }
+
+ // utf8 maximum expansion: x4 (-> utf32)
+ // utf16 maximum expansion: x2 (-> utf32)
+ // utf32 maximum expansion: x1
+ enum
+ {
+ bufcapacitybytes =
+ #ifdef PUGIXML_MEMORY_OUTPUT_STACK
+ PUGIXML_MEMORY_OUTPUT_STACK
+ #else
+ 10240
+ #endif
+ ,
+ bufcapacity = bufcapacitybytes / (sizeof(char_t) + 4)
+ };
+
+ char_t buffer[bufcapacity];
+
+ union
+ {
+ uint8_t data_u8[4 * bufcapacity];
+ uint16_t data_u16[2 * bufcapacity];
+ uint32_t data_u32[bufcapacity];
+ char_t data_char[bufcapacity];
+ } scratch;
+
+ xml_writer& writer;
+ size_t bufsize;
+ xml_encoding encoding;
+ };
+
+ PUGI__FN void text_output_escaped(xml_buffered_writer& writer, const char_t* s, chartypex_t type, unsigned int flags)
+ {
+ while (*s)
+ {
+ const char_t* prev = s;
+
+ // While *s is a usual symbol
+ PUGI__SCANWHILE_UNROLL(!PUGI__IS_CHARTYPEX(ss, type));
+
+ writer.write_buffer(prev, static_cast<size_t>(s - prev));
+
+ switch (*s)
+ {
+ case 0: break;
+ case '&':
+ writer.write('&', 'a', 'm', 'p', ';');
+ ++s;
+ break;
+ case '<':
+ writer.write('&', 'l', 't', ';');
+ ++s;
+ break;
+ case '>':
+ writer.write('&', 'g', 't', ';');
+ ++s;
+ break;
+ case '"':
+ if (flags & format_attribute_single_quote)
+ writer.write('"');
+ else
+ writer.write('&', 'q', 'u', 'o', 't', ';');
+ ++s;
+ break;
+ case '\'':
+ if (flags & format_attribute_single_quote)
+ writer.write('&', 'a', 'p', 'o', 's', ';');
+ else
+ writer.write('\'');
+ ++s;
+ break;
+ default: // s is not a usual symbol
+ {
+ unsigned int ch = static_cast<unsigned int>(*s++);
+ assert(ch < 32);
+
+ if (!(flags & format_skip_control_chars))
+ writer.write('&', '#', static_cast<char_t>((ch / 10) + '0'), static_cast<char_t>((ch % 10) + '0'), ';');
+ }
+ }
+ }
+ }
+
+ PUGI__FN void text_output(xml_buffered_writer& writer, const char_t* s, chartypex_t type, unsigned int flags)
+ {
+ if (flags & format_no_escapes)
+ writer.write_string(s);
+ else
+ text_output_escaped(writer, s, type, flags);
+ }
+
+ PUGI__FN void text_output_cdata(xml_buffered_writer& writer, const char_t* s)
+ {
+ do
+ {
+ writer.write('<', '!', '[', 'C', 'D');
+ writer.write('A', 'T', 'A', '[');
+
+ const char_t* prev = s;
+
+ // look for ]]> sequence - we can't output it as is since it terminates CDATA
+ while (*s && !(s[0] == ']' && s[1] == ']' && s[2] == '>')) ++s;
+
+ // skip ]] if we stopped at ]]>, > will go to the next CDATA section
+ if (*s) s += 2;
+
+ writer.write_buffer(prev, static_cast<size_t>(s - prev));
+
+ writer.write(']', ']', '>');
+ }
+ while (*s);
+ }
+
+ PUGI__FN void text_output_indent(xml_buffered_writer& writer, const char_t* indent, size_t indent_length, unsigned int depth)
+ {
+ switch (indent_length)
+ {
+ case 1:
+ {
+ for (unsigned int i = 0; i < depth; ++i)
+ writer.write(indent[0]);
+ break;
+ }
+
+ case 2:
+ {
+ for (unsigned int i = 0; i < depth; ++i)
+ writer.write(indent[0], indent[1]);
+ break;
+ }
+
+ case 3:
+ {
+ for (unsigned int i = 0; i < depth; ++i)
+ writer.write(indent[0], indent[1], indent[2]);
+ break;
+ }
+
+ case 4:
+ {
+ for (unsigned int i = 0; i < depth; ++i)
+ writer.write(indent[0], indent[1], indent[2], indent[3]);
+ break;
+ }
+
+ default:
+ {
+ for (unsigned int i = 0; i < depth; ++i)
+ writer.write_buffer(indent, indent_length);
+ }
+ }
+ }
+
+ PUGI__FN void node_output_comment(xml_buffered_writer& writer, const char_t* s)
+ {
+ writer.write('<', '!', '-', '-');
+
+ while (*s)
+ {
+ const char_t* prev = s;
+
+ // look for -\0 or -- sequence - we can't output it since -- is illegal in comment body
+ while (*s && !(s[0] == '-' && (s[1] == '-' || s[1] == 0))) ++s;
+
+ writer.write_buffer(prev, static_cast<size_t>(s - prev));
+
+ if (*s)
+ {
+ assert(*s == '-');
+
+ writer.write('-', ' ');
+ ++s;
+ }
+ }
+
+ writer.write('-', '-', '>');
+ }
+
+ PUGI__FN void node_output_pi_value(xml_buffered_writer& writer, const char_t* s)
+ {
+ while (*s)
+ {
+ const char_t* prev = s;
+
+ // look for ?> sequence - we can't output it since ?> terminates PI
+ while (*s && !(s[0] == '?' && s[1] == '>')) ++s;
+
+ writer.write_buffer(prev, static_cast<size_t>(s - prev));
+
+ if (*s)
+ {
+ assert(s[0] == '?' && s[1] == '>');
+
+ writer.write('?', ' ', '>');
+ s += 2;
+ }
+ }
+ }
+
+ PUGI__FN void node_output_attributes(xml_buffered_writer& writer, xml_node_struct* node, const char_t* indent, size_t indent_length, unsigned int flags, unsigned int depth)
+ {
+ const char_t* default_name = PUGIXML_TEXT(":anonymous");
+ const char_t enquotation_char = (flags & format_attribute_single_quote) ? '\'' : '"';
+
+ for (xml_attribute_struct* a = node->first_attribute; a; a = a->next_attribute)
+ {
+ if ((flags & (format_indent_attributes | format_raw)) == format_indent_attributes)
+ {
+ writer.write('\n');
+
+ text_output_indent(writer, indent, indent_length, depth + 1);
+ }
+ else
+ {
+ writer.write(' ');
+ }
+
+ writer.write_string(a->name ? a->name + 0 : default_name);
+ writer.write('=', enquotation_char);
+
+ if (a->value)
+ text_output(writer, a->value, ctx_special_attr, flags);
+
+ writer.write(enquotation_char);
+ }
+ }
+
+ PUGI__FN bool node_output_start(xml_buffered_writer& writer, xml_node_struct* node, const char_t* indent, size_t indent_length, unsigned int flags, unsigned int depth)
+ {
+ const char_t* default_name = PUGIXML_TEXT(":anonymous");
+ const char_t* name = node->name ? node->name + 0 : default_name;
+
+ writer.write('<');
+ writer.write_string(name);
+
+ if (node->first_attribute)
+ node_output_attributes(writer, node, indent, indent_length, flags, depth);
+
+ // element nodes can have value if parse_embed_pcdata was used
+ if (!node->value)
+ {
+ if (!node->first_child)
+ {
+ if (flags & format_no_empty_element_tags)
+ {
+ writer.write('>', '<', '/');
+ writer.write_string(name);
+ writer.write('>');
+
+ return false;
+ }
+ else
+ {
+ if ((flags & format_raw) == 0)
+ writer.write(' ');
+
+ writer.write('/', '>');
+
+ return false;
+ }
+ }
+ else
+ {
+ writer.write('>');
+
+ return true;
+ }
+ }
+ else
+ {
+ writer.write('>');
+
+ text_output(writer, node->value, ctx_special_pcdata, flags);
+
+ if (!node->first_child)
+ {
+ writer.write('<', '/');
+ writer.write_string(name);
+ writer.write('>');
+
+ return false;
+ }
+ else
+ {
+ return true;
+ }
+ }
+ }
+
+ PUGI__FN void node_output_end(xml_buffered_writer& writer, xml_node_struct* node)
+ {
+ const char_t* default_name = PUGIXML_TEXT(":anonymous");
+ const char_t* name = node->name ? node->name + 0 : default_name;
+
+ writer.write('<', '/');
+ writer.write_string(name);
+ writer.write('>');
+ }
+
+ PUGI__FN void node_output_simple(xml_buffered_writer& writer, xml_node_struct* node, unsigned int flags)
+ {
+ const char_t* default_name = PUGIXML_TEXT(":anonymous");
+
+ switch (PUGI__NODETYPE(node))
+ {
+ case node_pcdata:
+ text_output(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""), ctx_special_pcdata, flags);
+ break;
+
+ case node_cdata:
+ text_output_cdata(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""));
+ break;
+
+ case node_comment:
+ node_output_comment(writer, node->value ? node->value + 0 : PUGIXML_TEXT(""));
+ break;
+
+ case node_pi:
+ writer.write('<', '?');
+ writer.write_string(node->name ? node->name + 0 : default_name);
+
+ if (node->value)
+ {
+ writer.write(' ');
+ node_output_pi_value(writer, node->value);
+ }
+
+ writer.write('?', '>');
+ break;
+
+ case node_declaration:
+ writer.write('<', '?');
+ writer.write_string(node->name ? node->name + 0 : default_name);
+ node_output_attributes(writer, node, PUGIXML_TEXT(""), 0, flags | format_raw, 0);
+ writer.write('?', '>');
+ break;
+
+ case node_doctype:
+ writer.write('<', '!', 'D', 'O', 'C');
+ writer.write('T', 'Y', 'P', 'E');
+
+ if (node->value)
+ {
+ writer.write(' ');
+ writer.write_string(node->value);
+ }
+
+ writer.write('>');
+ break;
+
+ default:
+ assert(false && "Invalid node type"); // unreachable
+ }
+ }
+
+ enum indent_flags_t
+ {
+ indent_newline = 1,
+ indent_indent = 2
+ };
+
+ PUGI__FN void node_output(xml_buffered_writer& writer, xml_node_struct* root, const char_t* indent, unsigned int flags, unsigned int depth)
+ {
+ size_t indent_length = ((flags & (format_indent | format_indent_attributes)) && (flags & format_raw) == 0) ? strlength(indent) : 0;
+ unsigned int indent_flags = indent_indent;
+
+ xml_node_struct* node = root;
+
+ do
+ {
+ assert(node);
+
+ // begin writing current node
+ if (PUGI__NODETYPE(node) == node_pcdata || PUGI__NODETYPE(node) == node_cdata)
+ {
+ node_output_simple(writer, node, flags);
+
+ indent_flags = 0;
+ }
+ else
+ {
+ if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
+ writer.write('\n');
+
+ if ((indent_flags & indent_indent) && indent_length)
+ text_output_indent(writer, indent, indent_length, depth);
+
+ if (PUGI__NODETYPE(node) == node_element)
+ {
+ indent_flags = indent_newline | indent_indent;
+
+ if (node_output_start(writer, node, indent, indent_length, flags, depth))
+ {
+ // element nodes can have value if parse_embed_pcdata was used
+ if (node->value)
+ indent_flags = 0;
+
+ node = node->first_child;
+ depth++;
+ continue;
+ }
+ }
+ else if (PUGI__NODETYPE(node) == node_document)
+ {
+ indent_flags = indent_indent;
+
+ if (node->first_child)
+ {
+ node = node->first_child;
+ continue;
+ }
+ }
+ else
+ {
+ node_output_simple(writer, node, flags);
+
+ indent_flags = indent_newline | indent_indent;
+ }
+ }
+
+ // continue to the next node
+ while (node != root)
+ {
+ if (node->next_sibling)
+ {
+ node = node->next_sibling;
+ break;
+ }
+
+ node = node->parent;
+
+ // write closing node
+ if (PUGI__NODETYPE(node) == node_element)
+ {
+ depth--;
+
+ if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
+ writer.write('\n');
+
+ if ((indent_flags & indent_indent) && indent_length)
+ text_output_indent(writer, indent, indent_length, depth);
+
+ node_output_end(writer, node);
+
+ indent_flags = indent_newline | indent_indent;
+ }
+ }
+ }
+ while (node != root);
+
+ if ((indent_flags & indent_newline) && (flags & format_raw) == 0)
+ writer.write('\n');
+ }
+
+ PUGI__FN bool has_declaration(xml_node_struct* node)
+ {
+ for (xml_node_struct* child = node->first_child; child; child = child->next_sibling)
+ {
+ xml_node_type type = PUGI__NODETYPE(child);
+
+ if (type == node_declaration) return true;
+ if (type == node_element) return false;
+ }
+
+ return false;
+ }
+
+ PUGI__FN bool is_attribute_of(xml_attribute_struct* attr, xml_node_struct* node)
+ {
+ for (xml_attribute_struct* a = node->first_attribute; a; a = a->next_attribute)
+ if (a == attr)
+ return true;
+
+ return false;
+ }
+
+ PUGI__FN bool allow_insert_attribute(xml_node_type parent)
+ {
+ return parent == node_element || parent == node_declaration;
+ }
+
+ PUGI__FN bool allow_insert_child(xml_node_type parent, xml_node_type child)
+ {
+ if (parent != node_document && parent != node_element) return false;
+ if (child == node_document || child == node_null) return false;
+ if (parent != node_document && (child == node_declaration || child == node_doctype)) return false;
+
+ return true;
+ }
+
+ PUGI__FN bool allow_move(xml_node parent, xml_node child)
+ {
+ // check that child can be a child of parent
+ if (!allow_insert_child(parent.type(), child.type()))
+ return false;
+
+ // check that node is not moved between documents
+ if (parent.root() != child.root())
+ return false;
+
+ // check that new parent is not in the child subtree
+ xml_node cur = parent;
+
+ while (cur)
+ {
+ if (cur == child)
+ return false;
+
+ cur = cur.parent();
+ }
+
+ return true;
+ }
+
+ template <typename String, typename Header>
+ PUGI__FN void node_copy_string(String& dest, Header& header, uintptr_t header_mask, char_t* source, Header& source_header, xml_allocator* alloc)
+ {
+ assert(!dest && (header & header_mask) == 0);
+
+ if (source)
+ {
+ if (alloc && (source_header & header_mask) == 0)
+ {
+ dest = source;
+
+ // since strcpy_insitu can reuse document buffer memory we need to mark both source and dest as shared
+ header |= xml_memory_page_contents_shared_mask;
+ source_header |= xml_memory_page_contents_shared_mask;
+ }
+ else
+ strcpy_insitu(dest, header, header_mask, source, strlength(source));
+ }
+ }
+
+ PUGI__FN void node_copy_contents(xml_node_struct* dn, xml_node_struct* sn, xml_allocator* shared_alloc)
+ {
+ node_copy_string(dn->name, dn->header, xml_memory_page_name_allocated_mask, sn->name, sn->header, shared_alloc);
+ node_copy_string(dn->value, dn->header, xml_memory_page_value_allocated_mask, sn->value, sn->header, shared_alloc);
+
+ for (xml_attribute_struct* sa = sn->first_attribute; sa; sa = sa->next_attribute)
+ {
+ xml_attribute_struct* da = append_new_attribute(dn, get_allocator(dn));
+
+ if (da)
+ {
+ node_copy_string(da->name, da->header, xml_memory_page_name_allocated_mask, sa->name, sa->header, shared_alloc);
+ node_copy_string(da->value, da->header, xml_memory_page_value_allocated_mask, sa->value, sa->header, shared_alloc);
+ }
+ }
+ }
+
+ PUGI__FN void node_copy_tree(xml_node_struct* dn, xml_node_struct* sn)
+ {
+ xml_allocator& alloc = get_allocator(dn);
+ xml_allocator* shared_alloc = (&alloc == &get_allocator(sn)) ? &alloc : 0;
+
+ node_copy_contents(dn, sn, shared_alloc);
+
+ xml_node_struct* dit = dn;
+ xml_node_struct* sit = sn->first_child;
+
+ while (sit && sit != sn)
+ {
+ // loop invariant: dit is inside the subtree rooted at dn
+ assert(dit);
+
+ // when a tree is copied into one of the descendants, we need to skip that subtree to avoid an infinite loop
+ if (sit != dn)
+ {
+ xml_node_struct* copy = append_new_node(dit, alloc, PUGI__NODETYPE(sit));
+
+ if (copy)
+ {
+ node_copy_contents(copy, sit, shared_alloc);
+
+ if (sit->first_child)
+ {
+ dit = copy;
+ sit = sit->first_child;
+ continue;
+ }
+ }
+ }
+
+ // continue to the next node
+ do
+ {
+ if (sit->next_sibling)
+ {
+ sit = sit->next_sibling;
+ break;
+ }
+
+ sit = sit->parent;
+ dit = dit->parent;
+
+ // loop invariant: dit is inside the subtree rooted at dn while sit is inside sn
+ assert(sit == sn || dit);
+ }
+ while (sit != sn);
+ }
+
+ assert(!sit || dit == dn->parent);
+ }
+
+ PUGI__FN void node_copy_attribute(xml_attribute_struct* da, xml_attribute_struct* sa)
+ {
+ xml_allocator& alloc = get_allocator(da);
+ xml_allocator* shared_alloc = (&alloc == &get_allocator(sa)) ? &alloc : 0;
+
+ node_copy_string(da->name, da->header, xml_memory_page_name_allocated_mask, sa->name, sa->header, shared_alloc);
+ node_copy_string(da->value, da->header, xml_memory_page_value_allocated_mask, sa->value, sa->header, shared_alloc);
+ }
+
+ inline bool is_text_node(xml_node_struct* node)
+ {
+ xml_node_type type = PUGI__NODETYPE(node);
+
+ return type == node_pcdata || type == node_cdata;
+ }
+
+ // get value with conversion functions
+ template <typename U> PUGI__FN PUGI__UNSIGNED_OVERFLOW U string_to_integer(const char_t* value, U minv, U maxv)
+ {
+ U result = 0;
+ const char_t* s = value;
+
+ while (PUGI__IS_CHARTYPE(*s, ct_space))
+ s++;
+
+ bool negative = (*s == '-');
+
+ s += (*s == '+' || *s == '-');
+
+ bool overflow = false;
+
+ if (s[0] == '0' && (s[1] | ' ') == 'x')
+ {
+ s += 2;
+
+ // since overflow detection relies on length of the sequence skip leading zeros
+ while (*s == '0')
+ s++;
+
+ const char_t* start = s;
+
+ for (;;)
+ {
+ if (static_cast<unsigned>(*s - '0') < 10)
+ result = result * 16 + (*s - '0');
+ else if (static_cast<unsigned>((*s | ' ') - 'a') < 6)
+ result = result * 16 + ((*s | ' ') - 'a' + 10);
+ else
+ break;
+
+ s++;
+ }
+
+ size_t digits = static_cast<size_t>(s - start);
+
+ overflow = digits > sizeof(U) * 2;
+ }
+ else
+ {
+ // since overflow detection relies on length of the sequence skip leading zeros
+ while (*s == '0')
+ s++;
+
+ const char_t* start = s;
+
+ for (;;)
+ {
+ if (static_cast<unsigned>(*s - '0') < 10)
+ result = result * 10 + (*s - '0');
+ else
+ break;
+
+ s++;
+ }
+
+ size_t digits = static_cast<size_t>(s - start);
+
+ PUGI__STATIC_ASSERT(sizeof(U) == 8 || sizeof(U) == 4 || sizeof(U) == 2);
+
+ const size_t max_digits10 = sizeof(U) == 8 ? 20 : sizeof(U) == 4 ? 10 : 5;
+ const char_t max_lead = sizeof(U) == 8 ? '1' : sizeof(U) == 4 ? '4' : '6';
+ const size_t high_bit = sizeof(U) * 8 - 1;
+
+ overflow = digits >= max_digits10 && !(digits == max_digits10 && (*start < max_lead || (*start == max_lead && result >> high_bit)));
+ }
+
+ if (negative)
+ {
+ // Workaround for crayc++ CC-3059: Expected no overflow in routine.
+ #ifdef _CRAYC
+ return (overflow || result > ~minv + 1) ? minv : ~result + 1;
+ #else
+ return (overflow || result > 0 - minv) ? minv : 0 - result;
+ #endif
+ }
+ else
+ return (overflow || result > maxv) ? maxv : result;
+ }
+
+ PUGI__FN int get_value_int(const char_t* value)
+ {
+ return string_to_integer<unsigned int>(value, static_cast<unsigned int>(INT_MIN), INT_MAX);
+ }
+
+ PUGI__FN unsigned int get_value_uint(const char_t* value)
+ {
+ return string_to_integer<unsigned int>(value, 0, UINT_MAX);
+ }
+
+ PUGI__FN double get_value_double(const char_t* value)
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcstod(value, 0);
+ #else
+ return strtod(value, 0);
+ #endif
+ }
+
+ PUGI__FN float get_value_float(const char_t* value)
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ return static_cast<float>(wcstod(value, 0));
+ #else
+ return static_cast<float>(strtod(value, 0));
+ #endif
+ }
+
+ PUGI__FN bool get_value_bool(const char_t* value)
+ {
+ // only look at first char
+ char_t first = *value;
+
+ // 1*, t* (true), T* (True), y* (yes), Y* (YES)
+ return (first == '1' || first == 't' || first == 'T' || first == 'y' || first == 'Y');
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN long long get_value_llong(const char_t* value)
+ {
+ return string_to_integer<unsigned long long>(value, static_cast<unsigned long long>(LLONG_MIN), LLONG_MAX);
+ }
+
+ PUGI__FN unsigned long long get_value_ullong(const char_t* value)
+ {
+ return string_to_integer<unsigned long long>(value, 0, ULLONG_MAX);
+ }
+#endif
+
+ template <typename U> PUGI__FN PUGI__UNSIGNED_OVERFLOW char_t* integer_to_string(char_t* begin, char_t* end, U value, bool negative)
+ {
+ char_t* result = end - 1;
+ U rest = negative ? 0 - value : value;
+
+ do
+ {
+ *result-- = static_cast<char_t>('0' + (rest % 10));
+ rest /= 10;
+ }
+ while (rest);
+
+ assert(result >= begin);
+ (void)begin;
+
+ *result = '-';
+
+ return result + !negative;
+ }
+
+ // set value with conversion functions
+ template <typename String, typename Header>
+ PUGI__FN bool set_value_ascii(String& dest, Header& header, uintptr_t header_mask, char* buf)
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ char_t wbuf[128];
+ assert(strlen(buf) < sizeof(wbuf) / sizeof(wbuf[0]));
+
+ size_t offset = 0;
+ for (; buf[offset]; ++offset) wbuf[offset] = buf[offset];
+
+ return strcpy_insitu(dest, header, header_mask, wbuf, offset);
+ #else
+ return strcpy_insitu(dest, header, header_mask, buf, strlen(buf));
+ #endif
+ }
+
+ template <typename U, typename String, typename Header>
+ PUGI__FN bool set_value_integer(String& dest, Header& header, uintptr_t header_mask, U value, bool negative)
+ {
+ char_t buf[64];
+ char_t* end = buf + sizeof(buf) / sizeof(buf[0]);
+ char_t* begin = integer_to_string(buf, end, value, negative);
+
+ return strcpy_insitu(dest, header, header_mask, begin, end - begin);
+ }
+
+ template <typename String, typename Header>
+ PUGI__FN bool set_value_convert(String& dest, Header& header, uintptr_t header_mask, float value, int precision)
+ {
+ char buf[128];
+ PUGI__SNPRINTF(buf, "%.*g", precision, double(value));
+
+ return set_value_ascii(dest, header, header_mask, buf);
+ }
+
+ template <typename String, typename Header>
+ PUGI__FN bool set_value_convert(String& dest, Header& header, uintptr_t header_mask, double value, int precision)
+ {
+ char buf[128];
+ PUGI__SNPRINTF(buf, "%.*g", precision, value);
+
+ return set_value_ascii(dest, header, header_mask, buf);
+ }
+
+ template <typename String, typename Header>
+ PUGI__FN bool set_value_bool(String& dest, Header& header, uintptr_t header_mask, bool value)
+ {
+ return strcpy_insitu(dest, header, header_mask, value ? PUGIXML_TEXT("true") : PUGIXML_TEXT("false"), value ? 4 : 5);
+ }
+
+ PUGI__FN xml_parse_result load_buffer_impl(xml_document_struct* doc, xml_node_struct* root, void* contents, size_t size, unsigned int options, xml_encoding encoding, bool is_mutable, bool own, char_t** out_buffer)
+ {
+ // check input buffer
+ if (!contents && size) return make_parse_result(status_io_error);
+
+ // get actual encoding
+ xml_encoding buffer_encoding = impl::get_buffer_encoding(encoding, contents, size);
+
+ // get private buffer
+ char_t* buffer = 0;
+ size_t length = 0;
+
+ // coverity[var_deref_model]
+ if (!impl::convert_buffer(buffer, length, buffer_encoding, contents, size, is_mutable)) return impl::make_parse_result(status_out_of_memory);
+
+ // delete original buffer if we performed a conversion
+ if (own && buffer != contents && contents) impl::xml_memory::deallocate(contents);
+
+ // grab onto buffer if it's our buffer, user is responsible for deallocating contents himself
+ if (own || buffer != contents) *out_buffer = buffer;
+
+ // store buffer for offset_debug
+ doc->buffer = buffer;
+
+ // parse
+ xml_parse_result res = impl::xml_parser::parse(buffer, length, doc, root, options);
+
+ // remember encoding
+ res.encoding = buffer_encoding;
+
+ return res;
+ }
+
+ // we need to get length of entire file to load it in memory; the only (relatively) sane way to do it is via seek/tell trick
+ PUGI__FN xml_parse_status get_file_size(FILE* file, size_t& out_result)
+ {
+ #if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400
+ // there are 64-bit versions of fseek/ftell, let's use them
+ typedef __int64 length_type;
+
+ _fseeki64(file, 0, SEEK_END);
+ length_type length = _ftelli64(file);
+ _fseeki64(file, 0, SEEK_SET);
+ #elif defined(__MINGW32__) && !defined(__NO_MINGW_LFS) && (!defined(__STRICT_ANSI__) || defined(__MINGW64_VERSION_MAJOR))
+ // there are 64-bit versions of fseek/ftell, let's use them
+ typedef off64_t length_type;
+
+ fseeko64(file, 0, SEEK_END);
+ length_type length = ftello64(file);
+ fseeko64(file, 0, SEEK_SET);
+ #else
+ // if this is a 32-bit OS, long is enough; if this is a unix system, long is 64-bit, which is enough; otherwise we can't do anything anyway.
+ typedef long length_type;
+
+ fseek(file, 0, SEEK_END);
+ length_type length = ftell(file);
+ fseek(file, 0, SEEK_SET);
+ #endif
+
+ // check for I/O errors
+ if (length < 0) return status_io_error;
+
+ // check for overflow
+ size_t result = static_cast<size_t>(length);
+
+ if (static_cast<length_type>(result) != length) return status_out_of_memory;
+
+ // finalize
+ out_result = result;
+
+ return status_ok;
+ }
+
+ // This function assumes that buffer has extra sizeof(char_t) writable bytes after size
+ PUGI__FN size_t zero_terminate_buffer(void* buffer, size_t size, xml_encoding encoding)
+ {
+ // We only need to zero-terminate if encoding conversion does not do it for us
+ #ifdef PUGIXML_WCHAR_MODE
+ xml_encoding wchar_encoding = get_wchar_encoding();
+
+ if (encoding == wchar_encoding || need_endian_swap_utf(encoding, wchar_encoding))
+ {
+ size_t length = size / sizeof(char_t);
+
+ static_cast<char_t*>(buffer)[length] = 0;
+ return (length + 1) * sizeof(char_t);
+ }
+ #else
+ if (encoding == encoding_utf8)
+ {
+ static_cast<char*>(buffer)[size] = 0;
+ return size + 1;
+ }
+ #endif
+
+ return size;
+ }
+
+ PUGI__FN xml_parse_result load_file_impl(xml_document_struct* doc, FILE* file, unsigned int options, xml_encoding encoding, char_t** out_buffer)
+ {
+ if (!file) return make_parse_result(status_file_not_found);
+
+ // get file size (can result in I/O errors)
+ size_t size = 0;
+ xml_parse_status size_status = get_file_size(file, size);
+ if (size_status != status_ok) return make_parse_result(size_status);
+
+ size_t max_suffix_size = sizeof(char_t);
+
+ // allocate buffer for the whole file
+ char* contents = static_cast<char*>(xml_memory::allocate(size + max_suffix_size));
+ if (!contents) return make_parse_result(status_out_of_memory);
+
+ // read file in memory
+ size_t read_size = fread(contents, 1, size, file);
+
+ if (read_size != size)
+ {
+ xml_memory::deallocate(contents);
+ return make_parse_result(status_io_error);
+ }
+
+ xml_encoding real_encoding = get_buffer_encoding(encoding, contents, size);
+
+ return load_buffer_impl(doc, doc, contents, zero_terminate_buffer(contents, size, real_encoding), options, real_encoding, true, true, out_buffer);
+ }
+
+ PUGI__FN void close_file(FILE* file)
+ {
+ fclose(file);
+ }
+
+#ifndef PUGIXML_NO_STL
+ template <typename T> struct xml_stream_chunk
+ {
+ static xml_stream_chunk* create()
+ {
+ void* memory = xml_memory::allocate(sizeof(xml_stream_chunk));
+ if (!memory) return 0;
+
+ return new (memory) xml_stream_chunk();
+ }
+
+ static void destroy(xml_stream_chunk* chunk)
+ {
+ // free chunk chain
+ while (chunk)
+ {
+ xml_stream_chunk* next_ = chunk->next;
+
+ xml_memory::deallocate(chunk);
+
+ chunk = next_;
+ }
+ }
+
+ xml_stream_chunk(): next(0), size(0)
+ {
+ }
+
+ xml_stream_chunk* next;
+ size_t size;
+
+ T data[xml_memory_page_size / sizeof(T)];
+ };
+
+ template <typename T> PUGI__FN xml_parse_status load_stream_data_noseek(std::basic_istream<T>& stream, void** out_buffer, size_t* out_size)
+ {
+ auto_deleter<xml_stream_chunk<T> > chunks(0, xml_stream_chunk<T>::destroy);
+
+ // read file to a chunk list
+ size_t total = 0;
+ xml_stream_chunk<T>* last = 0;
+
+ while (!stream.eof())
+ {
+ // allocate new chunk
+ xml_stream_chunk<T>* chunk = xml_stream_chunk<T>::create();
+ if (!chunk) return status_out_of_memory;
+
+ // append chunk to list
+ if (last) last = last->next = chunk;
+ else chunks.data = last = chunk;
+
+ // read data to chunk
+ stream.read(chunk->data, static_cast<std::streamsize>(sizeof(chunk->data) / sizeof(T)));
+ chunk->size = static_cast<size_t>(stream.gcount()) * sizeof(T);
+
+ // read may set failbit | eofbit in case gcount() is less than read length, so check for other I/O errors
+ if (stream.bad() || (!stream.eof() && stream.fail())) return status_io_error;
+
+ // guard against huge files (chunk size is small enough to make this overflow check work)
+ if (total + chunk->size < total) return status_out_of_memory;
+ total += chunk->size;
+ }
+
+ size_t max_suffix_size = sizeof(char_t);
+
+ // copy chunk list to a contiguous buffer
+ char* buffer = static_cast<char*>(xml_memory::allocate(total + max_suffix_size));
+ if (!buffer) return status_out_of_memory;
+
+ char* write = buffer;
+
+ for (xml_stream_chunk<T>* chunk = chunks.data; chunk; chunk = chunk->next)
+ {
+ assert(write + chunk->size <= buffer + total);
+ memcpy(write, chunk->data, chunk->size);
+ write += chunk->size;
+ }
+
+ assert(write == buffer + total);
+
+ // return buffer
+ *out_buffer = buffer;
+ *out_size = total;
+
+ return status_ok;
+ }
+
+ template <typename T> PUGI__FN xml_parse_status load_stream_data_seek(std::basic_istream<T>& stream, void** out_buffer, size_t* out_size)
+ {
+ // get length of remaining data in stream
+ typename std::basic_istream<T>::pos_type pos = stream.tellg();
+ stream.seekg(0, std::ios::end);
+ std::streamoff length = stream.tellg() - pos;
+ stream.seekg(pos);
+
+ if (stream.fail() || pos < 0) return status_io_error;
+
+ // guard against huge files
+ size_t read_length = static_cast<size_t>(length);
+
+ if (static_cast<std::streamsize>(read_length) != length || length < 0) return status_out_of_memory;
+
+ size_t max_suffix_size = sizeof(char_t);
+
+ // read stream data into memory (guard against stream exceptions with buffer holder)
+ auto_deleter<void> buffer(xml_memory::allocate(read_length * sizeof(T) + max_suffix_size), xml_memory::deallocate);
+ if (!buffer.data) return status_out_of_memory;
+
+ stream.read(static_cast<T*>(buffer.data), static_cast<std::streamsize>(read_length));
+
+ // read may set failbit | eofbit in case gcount() is less than read_length (i.e. line ending conversion), so check for other I/O errors
+ if (stream.bad() || (!stream.eof() && stream.fail())) return status_io_error;
+
+ // return buffer
+ size_t actual_length = static_cast<size_t>(stream.gcount());
+ assert(actual_length <= read_length);
+
+ *out_buffer = buffer.release();
+ *out_size = actual_length * sizeof(T);
+
+ return status_ok;
+ }
+
+ template <typename T> PUGI__FN xml_parse_result load_stream_impl(xml_document_struct* doc, std::basic_istream<T>& stream, unsigned int options, xml_encoding encoding, char_t** out_buffer)
+ {
+ void* buffer = 0;
+ size_t size = 0;
+ xml_parse_status status = status_ok;
+
+ // if stream has an error bit set, bail out (otherwise tellg() can fail and we'll clear error bits)
+ if (stream.fail()) return make_parse_result(status_io_error);
+
+ // load stream to memory (using seek-based implementation if possible, since it's faster and takes less memory)
+ if (stream.tellg() < 0)
+ {
+ stream.clear(); // clear error flags that could be set by a failing tellg
+ status = load_stream_data_noseek(stream, &buffer, &size);
+ }
+ else
+ status = load_stream_data_seek(stream, &buffer, &size);
+
+ if (status != status_ok) return make_parse_result(status);
+
+ xml_encoding real_encoding = get_buffer_encoding(encoding, buffer, size);
+
+ return load_buffer_impl(doc, doc, buffer, zero_terminate_buffer(buffer, size, real_encoding), options, real_encoding, true, true, out_buffer);
+ }
+#endif
+
+#if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__) || (defined(__MINGW32__) && (!defined(__STRICT_ANSI__) || defined(__MINGW64_VERSION_MAJOR)))
+ PUGI__FN FILE* open_file_wide(const wchar_t* path, const wchar_t* mode)
+ {
+#if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400
+ FILE* file = 0;
+ return _wfopen_s(&file, path, mode) == 0 ? file : 0;
+#else
+ return _wfopen(path, mode);
+#endif
+ }
+#else
+ PUGI__FN char* convert_path_heap(const wchar_t* str)
+ {
+ assert(str);
+
+ // first pass: get length in utf8 characters
+ size_t length = strlength_wide(str);
+ size_t size = as_utf8_begin(str, length);
+
+ // allocate resulting string
+ char* result = static_cast<char*>(xml_memory::allocate(size + 1));
+ if (!result) return 0;
+
+ // second pass: convert to utf8
+ as_utf8_end(result, size, str, length);
+
+ // zero-terminate
+ result[size] = 0;
+
+ return result;
+ }
+
+ PUGI__FN FILE* open_file_wide(const wchar_t* path, const wchar_t* mode)
+ {
+ // there is no standard function to open wide paths, so our best bet is to try utf8 path
+ char* path_utf8 = convert_path_heap(path);
+ if (!path_utf8) return 0;
+
+ // convert mode to ASCII (we mirror _wfopen interface)
+ char mode_ascii[4] = {0};
+ for (size_t i = 0; mode[i]; ++i) mode_ascii[i] = static_cast<char>(mode[i]);
+
+ // try to open the utf8 path
+ FILE* result = fopen(path_utf8, mode_ascii);
+
+ // free dummy buffer
+ xml_memory::deallocate(path_utf8);
+
+ return result;
+ }
+#endif
+
+ PUGI__FN FILE* open_file(const char* path, const char* mode)
+ {
+#if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400
+ FILE* file = 0;
+ return fopen_s(&file, path, mode) == 0 ? file : 0;
+#else
+ return fopen(path, mode);
+#endif
+ }
+
+ PUGI__FN bool save_file_impl(const xml_document& doc, FILE* file, const char_t* indent, unsigned int flags, xml_encoding encoding)
+ {
+ if (!file) return false;
+
+ xml_writer_file writer(file);
+ doc.save(writer, indent, flags, encoding);
+
+ return ferror(file) == 0;
+ }
+
+ struct name_null_sentry
+ {
+ xml_node_struct* node;
+ char_t* name;
+
+ name_null_sentry(xml_node_struct* node_): node(node_), name(node_->name)
+ {
+ node->name = 0;
+ }
+
+ ~name_null_sentry()
+ {
+ node->name = name;
+ }
+ };
+PUGI__NS_END
+
+namespace pugi
+{
+ PUGI__FN xml_writer_file::xml_writer_file(void* file_): file(file_)
+ {
+ }
+
+ PUGI__FN void xml_writer_file::write(const void* data, size_t size)
+ {
+ size_t result = fwrite(data, 1, size, static_cast<FILE*>(file));
+ (void)!result; // unfortunately we can't do proper error handling here
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN xml_writer_stream::xml_writer_stream(std::basic_ostream<char, std::char_traits<char> >& stream): narrow_stream(&stream), wide_stream(0)
+ {
+ }
+
+ PUGI__FN xml_writer_stream::xml_writer_stream(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream): narrow_stream(0), wide_stream(&stream)
+ {
+ }
+
+ PUGI__FN void xml_writer_stream::write(const void* data, size_t size)
+ {
+ if (narrow_stream)
+ {
+ assert(!wide_stream);
+ narrow_stream->write(reinterpret_cast<const char*>(data), static_cast<std::streamsize>(size));
+ }
+ else
+ {
+ assert(wide_stream);
+ assert(size % sizeof(wchar_t) == 0);
+
+ wide_stream->write(reinterpret_cast<const wchar_t*>(data), static_cast<std::streamsize>(size / sizeof(wchar_t)));
+ }
+ }
+#endif
+
+ PUGI__FN xml_tree_walker::xml_tree_walker(): _depth(0)
+ {
+ }
+
+ PUGI__FN xml_tree_walker::~xml_tree_walker()
+ {
+ }
+
+ PUGI__FN int xml_tree_walker::depth() const
+ {
+ return _depth;
+ }
+
+ PUGI__FN bool xml_tree_walker::begin(xml_node&)
+ {
+ return true;
+ }
+
+ PUGI__FN bool xml_tree_walker::end(xml_node&)
+ {
+ return true;
+ }
+
+ PUGI__FN xml_attribute::xml_attribute(): _attr(0)
+ {
+ }
+
+ PUGI__FN xml_attribute::xml_attribute(xml_attribute_struct* attr): _attr(attr)
+ {
+ }
+
+ PUGI__FN static void unspecified_bool_xml_attribute(xml_attribute***)
+ {
+ }
+
+ PUGI__FN xml_attribute::operator xml_attribute::unspecified_bool_type() const
+ {
+ return _attr ? unspecified_bool_xml_attribute : 0;
+ }
+
+ PUGI__FN bool xml_attribute::operator!() const
+ {
+ return !_attr;
+ }
+
+ PUGI__FN bool xml_attribute::operator==(const xml_attribute& r) const
+ {
+ return (_attr == r._attr);
+ }
+
+ PUGI__FN bool xml_attribute::operator!=(const xml_attribute& r) const
+ {
+ return (_attr != r._attr);
+ }
+
+ PUGI__FN bool xml_attribute::operator<(const xml_attribute& r) const
+ {
+ return (_attr < r._attr);
+ }
+
+ PUGI__FN bool xml_attribute::operator>(const xml_attribute& r) const
+ {
+ return (_attr > r._attr);
+ }
+
+ PUGI__FN bool xml_attribute::operator<=(const xml_attribute& r) const
+ {
+ return (_attr <= r._attr);
+ }
+
+ PUGI__FN bool xml_attribute::operator>=(const xml_attribute& r) const
+ {
+ return (_attr >= r._attr);
+ }
+
+ PUGI__FN xml_attribute xml_attribute::next_attribute() const
+ {
+ return _attr ? xml_attribute(_attr->next_attribute) : xml_attribute();
+ }
+
+ PUGI__FN xml_attribute xml_attribute::previous_attribute() const
+ {
+ return _attr && _attr->prev_attribute_c->next_attribute ? xml_attribute(_attr->prev_attribute_c) : xml_attribute();
+ }
+
+ PUGI__FN const char_t* xml_attribute::as_string(const char_t* def) const
+ {
+ return (_attr && _attr->value) ? _attr->value + 0 : def;
+ }
+
+ PUGI__FN int xml_attribute::as_int(int def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_int(_attr->value) : def;
+ }
+
+ PUGI__FN unsigned int xml_attribute::as_uint(unsigned int def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_uint(_attr->value) : def;
+ }
+
+ PUGI__FN double xml_attribute::as_double(double def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_double(_attr->value) : def;
+ }
+
+ PUGI__FN float xml_attribute::as_float(float def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_float(_attr->value) : def;
+ }
+
+ PUGI__FN bool xml_attribute::as_bool(bool def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_bool(_attr->value) : def;
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN long long xml_attribute::as_llong(long long def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_llong(_attr->value) : def;
+ }
+
+ PUGI__FN unsigned long long xml_attribute::as_ullong(unsigned long long def) const
+ {
+ return (_attr && _attr->value) ? impl::get_value_ullong(_attr->value) : def;
+ }
+#endif
+
+ PUGI__FN bool xml_attribute::empty() const
+ {
+ return !_attr;
+ }
+
+ PUGI__FN const char_t* xml_attribute::name() const
+ {
+ return (_attr && _attr->name) ? _attr->name + 0 : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const char_t* xml_attribute::value() const
+ {
+ return (_attr && _attr->value) ? _attr->value + 0 : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN size_t xml_attribute::hash_value() const
+ {
+ return static_cast<size_t>(reinterpret_cast<uintptr_t>(_attr) / sizeof(xml_attribute_struct));
+ }
+
+ PUGI__FN xml_attribute_struct* xml_attribute::internal_object() const
+ {
+ return _attr;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(const char_t* rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(int rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(unsigned int rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(long rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(unsigned long rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(double rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(float rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(bool rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN xml_attribute& xml_attribute::operator=(long long rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute::operator=(unsigned long long rhs)
+ {
+ set_value(rhs);
+ return *this;
+ }
+#endif
+
+ PUGI__FN bool xml_attribute::set_name(const char_t* rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::strcpy_insitu(_attr->name, _attr->header, impl::xml_memory_page_name_allocated_mask, rhs, impl::strlength(rhs));
+ }
+
+ PUGI__FN bool xml_attribute::set_value(const char_t* rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::strcpy_insitu(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs));
+ }
+
+ PUGI__FN bool xml_attribute::set_value(int rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned int>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(unsigned int rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned int>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(long rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(unsigned long rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(double rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, default_double_precision);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(double rhs, int precision)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, precision);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(float rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, default_float_precision);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(float rhs, int precision)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_convert(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, precision);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(bool rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_bool(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs);
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN bool xml_attribute::set_value(long long rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned long long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0);
+ }
+
+ PUGI__FN bool xml_attribute::set_value(unsigned long long rhs)
+ {
+ if (!_attr) return false;
+
+ return impl::set_value_integer<unsigned long long>(_attr->value, _attr->header, impl::xml_memory_page_value_allocated_mask, rhs, false);
+ }
+#endif
+
+#ifdef __BORLANDC__
+ PUGI__FN bool operator&&(const xml_attribute& lhs, bool rhs)
+ {
+ return (bool)lhs && rhs;
+ }
+
+ PUGI__FN bool operator||(const xml_attribute& lhs, bool rhs)
+ {
+ return (bool)lhs || rhs;
+ }
+#endif
+
+ PUGI__FN xml_node::xml_node(): _root(0)
+ {
+ }
+
+ PUGI__FN xml_node::xml_node(xml_node_struct* p): _root(p)
+ {
+ }
+
+ PUGI__FN static void unspecified_bool_xml_node(xml_node***)
+ {
+ }
+
+ PUGI__FN xml_node::operator xml_node::unspecified_bool_type() const
+ {
+ return _root ? unspecified_bool_xml_node : 0;
+ }
+
+ PUGI__FN bool xml_node::operator!() const
+ {
+ return !_root;
+ }
+
+ PUGI__FN xml_node::iterator xml_node::begin() const
+ {
+ return iterator(_root ? _root->first_child + 0 : 0, _root);
+ }
+
+ PUGI__FN xml_node::iterator xml_node::end() const
+ {
+ return iterator(0, _root);
+ }
+
+ PUGI__FN xml_node::attribute_iterator xml_node::attributes_begin() const
+ {
+ return attribute_iterator(_root ? _root->first_attribute + 0 : 0, _root);
+ }
+
+ PUGI__FN xml_node::attribute_iterator xml_node::attributes_end() const
+ {
+ return attribute_iterator(0, _root);
+ }
+
+ PUGI__FN xml_object_range<xml_node_iterator> xml_node::children() const
+ {
+ return xml_object_range<xml_node_iterator>(begin(), end());
+ }
+
+ PUGI__FN xml_object_range<xml_named_node_iterator> xml_node::children(const char_t* name_) const
+ {
+ return xml_object_range<xml_named_node_iterator>(xml_named_node_iterator(child(name_)._root, _root, name_), xml_named_node_iterator(0, _root, name_));
+ }
+
+ PUGI__FN xml_object_range<xml_attribute_iterator> xml_node::attributes() const
+ {
+ return xml_object_range<xml_attribute_iterator>(attributes_begin(), attributes_end());
+ }
+
+ PUGI__FN bool xml_node::operator==(const xml_node& r) const
+ {
+ return (_root == r._root);
+ }
+
+ PUGI__FN bool xml_node::operator!=(const xml_node& r) const
+ {
+ return (_root != r._root);
+ }
+
+ PUGI__FN bool xml_node::operator<(const xml_node& r) const
+ {
+ return (_root < r._root);
+ }
+
+ PUGI__FN bool xml_node::operator>(const xml_node& r) const
+ {
+ return (_root > r._root);
+ }
+
+ PUGI__FN bool xml_node::operator<=(const xml_node& r) const
+ {
+ return (_root <= r._root);
+ }
+
+ PUGI__FN bool xml_node::operator>=(const xml_node& r) const
+ {
+ return (_root >= r._root);
+ }
+
+ PUGI__FN bool xml_node::empty() const
+ {
+ return !_root;
+ }
+
+ PUGI__FN const char_t* xml_node::name() const
+ {
+ return (_root && _root->name) ? _root->name + 0 : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN xml_node_type xml_node::type() const
+ {
+ return _root ? PUGI__NODETYPE(_root) : node_null;
+ }
+
+ PUGI__FN const char_t* xml_node::value() const
+ {
+ return (_root && _root->value) ? _root->value + 0 : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN xml_node xml_node::child(const char_t* name_) const
+ {
+ if (!_root) return xml_node();
+
+ for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
+ if (i->name && impl::strequal(name_, i->name)) return xml_node(i);
+
+ return xml_node();
+ }
+
+ PUGI__FN xml_attribute xml_node::attribute(const char_t* name_) const
+ {
+ if (!_root) return xml_attribute();
+
+ for (xml_attribute_struct* i = _root->first_attribute; i; i = i->next_attribute)
+ if (i->name && impl::strequal(name_, i->name))
+ return xml_attribute(i);
+
+ return xml_attribute();
+ }
+
+ PUGI__FN xml_node xml_node::next_sibling(const char_t* name_) const
+ {
+ if (!_root) return xml_node();
+
+ for (xml_node_struct* i = _root->next_sibling; i; i = i->next_sibling)
+ if (i->name && impl::strequal(name_, i->name)) return xml_node(i);
+
+ return xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::next_sibling() const
+ {
+ return _root ? xml_node(_root->next_sibling) : xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::previous_sibling(const char_t* name_) const
+ {
+ if (!_root) return xml_node();
+
+ for (xml_node_struct* i = _root->prev_sibling_c; i->next_sibling; i = i->prev_sibling_c)
+ if (i->name && impl::strequal(name_, i->name)) return xml_node(i);
+
+ return xml_node();
+ }
+
+ PUGI__FN xml_attribute xml_node::attribute(const char_t* name_, xml_attribute& hint_) const
+ {
+ xml_attribute_struct* hint = hint_._attr;
+
+ // if hint is not an attribute of node, behavior is not defined
+ assert(!hint || (_root && impl::is_attribute_of(hint, _root)));
+
+ if (!_root) return xml_attribute();
+
+ // optimistically search from hint up until the end
+ for (xml_attribute_struct* i = hint; i; i = i->next_attribute)
+ if (i->name && impl::strequal(name_, i->name))
+ {
+ // update hint to maximize efficiency of searching for consecutive attributes
+ hint_._attr = i->next_attribute;
+
+ return xml_attribute(i);
+ }
+
+ // wrap around and search from the first attribute until the hint
+ // 'j' null pointer check is technically redundant, but it prevents a crash in case the assertion above fails
+ for (xml_attribute_struct* j = _root->first_attribute; j && j != hint; j = j->next_attribute)
+ if (j->name && impl::strequal(name_, j->name))
+ {
+ // update hint to maximize efficiency of searching for consecutive attributes
+ hint_._attr = j->next_attribute;
+
+ return xml_attribute(j);
+ }
+
+ return xml_attribute();
+ }
+
+ PUGI__FN xml_node xml_node::previous_sibling() const
+ {
+ if (!_root) return xml_node();
+
+ if (_root->prev_sibling_c->next_sibling) return xml_node(_root->prev_sibling_c);
+ else return xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::parent() const
+ {
+ return _root ? xml_node(_root->parent) : xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::root() const
+ {
+ return _root ? xml_node(&impl::get_document(_root)) : xml_node();
+ }
+
+ PUGI__FN xml_text xml_node::text() const
+ {
+ return xml_text(_root);
+ }
+
+ PUGI__FN const char_t* xml_node::child_value() const
+ {
+ if (!_root) return PUGIXML_TEXT("");
+
+ // element nodes can have value if parse_embed_pcdata was used
+ if (PUGI__NODETYPE(_root) == node_element && _root->value)
+ return _root->value;
+
+ for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
+ if (impl::is_text_node(i) && i->value)
+ return i->value;
+
+ return PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const char_t* xml_node::child_value(const char_t* name_) const
+ {
+ return child(name_).child_value();
+ }
+
+ PUGI__FN xml_attribute xml_node::first_attribute() const
+ {
+ return _root ? xml_attribute(_root->first_attribute) : xml_attribute();
+ }
+
+ PUGI__FN xml_attribute xml_node::last_attribute() const
+ {
+ return _root && _root->first_attribute ? xml_attribute(_root->first_attribute->prev_attribute_c) : xml_attribute();
+ }
+
+ PUGI__FN xml_node xml_node::first_child() const
+ {
+ return _root ? xml_node(_root->first_child) : xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::last_child() const
+ {
+ return _root && _root->first_child ? xml_node(_root->first_child->prev_sibling_c) : xml_node();
+ }
+
+ PUGI__FN bool xml_node::set_name(const char_t* rhs)
+ {
+ xml_node_type type_ = _root ? PUGI__NODETYPE(_root) : node_null;
+
+ if (type_ != node_element && type_ != node_pi && type_ != node_declaration)
+ return false;
+
+ return impl::strcpy_insitu(_root->name, _root->header, impl::xml_memory_page_name_allocated_mask, rhs, impl::strlength(rhs));
+ }
+
+ PUGI__FN bool xml_node::set_value(const char_t* rhs)
+ {
+ xml_node_type type_ = _root ? PUGI__NODETYPE(_root) : node_null;
+
+ if (type_ != node_pcdata && type_ != node_cdata && type_ != node_comment && type_ != node_pi && type_ != node_doctype)
+ return false;
+
+ return impl::strcpy_insitu(_root->value, _root->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs));
+ }
+
+ PUGI__FN xml_attribute xml_node::append_attribute(const char_t* name_)
+ {
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::append_attribute(a._attr, _root);
+
+ a.set_name(name_);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::prepend_attribute(const char_t* name_)
+ {
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::prepend_attribute(a._attr, _root);
+
+ a.set_name(name_);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::insert_attribute_after(const char_t* name_, const xml_attribute& attr)
+ {
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::insert_attribute_after(a._attr, attr._attr, _root);
+
+ a.set_name(name_);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::insert_attribute_before(const char_t* name_, const xml_attribute& attr)
+ {
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::insert_attribute_before(a._attr, attr._attr, _root);
+
+ a.set_name(name_);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::append_copy(const xml_attribute& proto)
+ {
+ if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::append_attribute(a._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::prepend_copy(const xml_attribute& proto)
+ {
+ if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::prepend_attribute(a._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::insert_copy_after(const xml_attribute& proto, const xml_attribute& attr)
+ {
+ if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::insert_attribute_after(a._attr, attr._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
+ }
+
+ PUGI__FN xml_attribute xml_node::insert_copy_before(const xml_attribute& proto, const xml_attribute& attr)
+ {
+ if (!proto) return xml_attribute();
+ if (!impl::allow_insert_attribute(type())) return xml_attribute();
+ if (!attr || !impl::is_attribute_of(attr._attr, _root)) return xml_attribute();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_attribute();
+
+ xml_attribute a(impl::allocate_attribute(alloc));
+ if (!a) return xml_attribute();
+
+ impl::insert_attribute_before(a._attr, attr._attr, _root);
+ impl::node_copy_attribute(a._attr, proto._attr);
+
+ return a;
+ }
+
+ PUGI__FN xml_node xml_node::append_child(xml_node_type type_)
+ {
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::append_node(n._root, _root);
+
+ if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::prepend_child(xml_node_type type_)
+ {
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::prepend_node(n._root, _root);
+
+ if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::insert_child_before(xml_node_type type_, const xml_node& node)
+ {
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::insert_node_before(n._root, node._root);
+
+ if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::insert_child_after(xml_node_type type_, const xml_node& node)
+ {
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::insert_node_after(n._root, node._root);
+
+ if (type_ == node_declaration) n.set_name(PUGIXML_TEXT("xml"));
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::append_child(const char_t* name_)
+ {
+ xml_node result = append_child(node_element);
+
+ result.set_name(name_);
+
+ return result;
+ }
+
+ PUGI__FN xml_node xml_node::prepend_child(const char_t* name_)
+ {
+ xml_node result = prepend_child(node_element);
+
+ result.set_name(name_);
+
+ return result;
+ }
+
+ PUGI__FN xml_node xml_node::insert_child_after(const char_t* name_, const xml_node& node)
+ {
+ xml_node result = insert_child_after(node_element, node);
+
+ result.set_name(name_);
+
+ return result;
+ }
+
+ PUGI__FN xml_node xml_node::insert_child_before(const char_t* name_, const xml_node& node)
+ {
+ xml_node result = insert_child_before(node_element, node);
+
+ result.set_name(name_);
+
+ return result;
+ }
+
+ PUGI__FN xml_node xml_node::append_copy(const xml_node& proto)
+ {
+ xml_node_type type_ = proto.type();
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::append_node(n._root, _root);
+ impl::node_copy_tree(n._root, proto._root);
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::prepend_copy(const xml_node& proto)
+ {
+ xml_node_type type_ = proto.type();
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::prepend_node(n._root, _root);
+ impl::node_copy_tree(n._root, proto._root);
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::insert_copy_after(const xml_node& proto, const xml_node& node)
+ {
+ xml_node_type type_ = proto.type();
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::insert_node_after(n._root, node._root);
+ impl::node_copy_tree(n._root, proto._root);
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::insert_copy_before(const xml_node& proto, const xml_node& node)
+ {
+ xml_node_type type_ = proto.type();
+ if (!impl::allow_insert_child(type(), type_)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ xml_node n(impl::allocate_node(alloc, type_));
+ if (!n) return xml_node();
+
+ impl::insert_node_before(n._root, node._root);
+ impl::node_copy_tree(n._root, proto._root);
+
+ return n;
+ }
+
+ PUGI__FN xml_node xml_node::append_move(const xml_node& moved)
+ {
+ if (!impl::allow_move(*this, moved)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ // disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
+ impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
+
+ impl::remove_node(moved._root);
+ impl::append_node(moved._root, _root);
+
+ return moved;
+ }
+
+ PUGI__FN xml_node xml_node::prepend_move(const xml_node& moved)
+ {
+ if (!impl::allow_move(*this, moved)) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ // disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
+ impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
+
+ impl::remove_node(moved._root);
+ impl::prepend_node(moved._root, _root);
+
+ return moved;
+ }
+
+ PUGI__FN xml_node xml_node::insert_move_after(const xml_node& moved, const xml_node& node)
+ {
+ if (!impl::allow_move(*this, moved)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+ if (moved._root == node._root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ // disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
+ impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
+
+ impl::remove_node(moved._root);
+ impl::insert_node_after(moved._root, node._root);
+
+ return moved;
+ }
+
+ PUGI__FN xml_node xml_node::insert_move_before(const xml_node& moved, const xml_node& node)
+ {
+ if (!impl::allow_move(*this, moved)) return xml_node();
+ if (!node._root || node._root->parent != _root) return xml_node();
+ if (moved._root == node._root) return xml_node();
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return xml_node();
+
+ // disable document_buffer_order optimization since moving nodes around changes document order without changing buffer pointers
+ impl::get_document(_root).header |= impl::xml_memory_page_contents_shared_mask;
+
+ impl::remove_node(moved._root);
+ impl::insert_node_before(moved._root, node._root);
+
+ return moved;
+ }
+
+ PUGI__FN bool xml_node::remove_attribute(const char_t* name_)
+ {
+ return remove_attribute(attribute(name_));
+ }
+
+ PUGI__FN bool xml_node::remove_attribute(const xml_attribute& a)
+ {
+ if (!_root || !a._attr) return false;
+ if (!impl::is_attribute_of(a._attr, _root)) return false;
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
+ impl::remove_attribute(a._attr, _root);
+ impl::destroy_attribute(a._attr, alloc);
+
+ return true;
+ }
+
+ PUGI__FN bool xml_node::remove_attributes()
+ {
+ if (!_root) return false;
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
+ for (xml_attribute_struct* attr = _root->first_attribute; attr; )
+ {
+ xml_attribute_struct* next = attr->next_attribute;
+
+ impl::destroy_attribute(attr, alloc);
+
+ attr = next;
+ }
+
+ _root->first_attribute = 0;
+
+ return true;
+ }
+
+ PUGI__FN bool xml_node::remove_child(const char_t* name_)
+ {
+ return remove_child(child(name_));
+ }
+
+ PUGI__FN bool xml_node::remove_child(const xml_node& n)
+ {
+ if (!_root || !n._root || n._root->parent != _root) return false;
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
+ impl::remove_node(n._root);
+ impl::destroy_node(n._root, alloc);
+
+ return true;
+ }
+
+ PUGI__FN bool xml_node::remove_children()
+ {
+ if (!_root) return false;
+
+ impl::xml_allocator& alloc = impl::get_allocator(_root);
+ if (!alloc.reserve()) return false;
+
+ for (xml_node_struct* cur = _root->first_child; cur; )
+ {
+ xml_node_struct* next = cur->next_sibling;
+
+ impl::destroy_node(cur, alloc);
+
+ cur = next;
+ }
+
+ _root->first_child = 0;
+
+ return true;
+ }
+
+ PUGI__FN xml_parse_result xml_node::append_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
+ {
+ // append_buffer is only valid for elements/documents
+ if (!impl::allow_insert_child(type(), node_element)) return impl::make_parse_result(status_append_invalid_root);
+
+ // get document node
+ impl::xml_document_struct* doc = &impl::get_document(_root);
+
+ // disable document_buffer_order optimization since in a document with multiple buffers comparing buffer pointers does not make sense
+ doc->header |= impl::xml_memory_page_contents_shared_mask;
+
+ // get extra buffer element (we'll store the document fragment buffer there so that we can deallocate it later)
+ impl::xml_memory_page* page = 0;
+ impl::xml_extra_buffer* extra = static_cast<impl::xml_extra_buffer*>(doc->allocate_memory(sizeof(impl::xml_extra_buffer) + sizeof(void*), page));
+ (void)page;
+
+ if (!extra) return impl::make_parse_result(status_out_of_memory);
+
+ #ifdef PUGIXML_COMPACT
+ // align the memory block to a pointer boundary; this is required for compact mode where memory allocations are only 4b aligned
+ // note that this requires up to sizeof(void*)-1 additional memory, which the allocation above takes into account
+ extra = reinterpret_cast<impl::xml_extra_buffer*>((reinterpret_cast<uintptr_t>(extra) + (sizeof(void*) - 1)) & ~(sizeof(void*) - 1));
+ #endif
+
+ // add extra buffer to the list
+ extra->buffer = 0;
+ extra->next = doc->extra_buffers;
+ doc->extra_buffers = extra;
+
+ // name of the root has to be NULL before parsing - otherwise closing node mismatches will not be detected at the top level
+ impl::name_null_sentry sentry(_root);
+
+ return impl::load_buffer_impl(doc, _root, const_cast<void*>(contents), size, options, encoding, false, false, &extra->buffer);
+ }
+
+ PUGI__FN xml_node xml_node::find_child_by_attribute(const char_t* name_, const char_t* attr_name, const char_t* attr_value) const
+ {
+ if (!_root) return xml_node();
+
+ for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
+ if (i->name && impl::strequal(name_, i->name))
+ {
+ for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
+ if (a->name && impl::strequal(attr_name, a->name) && impl::strequal(attr_value, a->value ? a->value + 0 : PUGIXML_TEXT("")))
+ return xml_node(i);
+ }
+
+ return xml_node();
+ }
+
+ PUGI__FN xml_node xml_node::find_child_by_attribute(const char_t* attr_name, const char_t* attr_value) const
+ {
+ if (!_root) return xml_node();
+
+ for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
+ for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
+ if (a->name && impl::strequal(attr_name, a->name) && impl::strequal(attr_value, a->value ? a->value + 0 : PUGIXML_TEXT("")))
+ return xml_node(i);
+
+ return xml_node();
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN string_t xml_node::path(char_t delimiter) const
+ {
+ if (!_root) return string_t();
+
+ size_t offset = 0;
+
+ for (xml_node_struct* i = _root; i; i = i->parent)
+ {
+ offset += (i != _root);
+ offset += i->name ? impl::strlength(i->name) : 0;
+ }
+
+ string_t result;
+ result.resize(offset);
+
+ for (xml_node_struct* j = _root; j; j = j->parent)
+ {
+ if (j != _root)
+ result[--offset] = delimiter;
+
+ if (j->name)
+ {
+ size_t length = impl::strlength(j->name);
+
+ offset -= length;
+ memcpy(&result[offset], j->name, length * sizeof(char_t));
+ }
+ }
+
+ assert(offset == 0);
+
+ return result;
+ }
+#endif
+
+ PUGI__FN xml_node xml_node::first_element_by_path(const char_t* path_, char_t delimiter) const
+ {
+ xml_node context = path_[0] == delimiter ? root() : *this;
+
+ if (!context._root) return xml_node();
+
+ const char_t* path_segment = path_;
+
+ while (*path_segment == delimiter) ++path_segment;
+
+ const char_t* path_segment_end = path_segment;
+
+ while (*path_segment_end && *path_segment_end != delimiter) ++path_segment_end;
+
+ if (path_segment == path_segment_end) return context;
+
+ const char_t* next_segment = path_segment_end;
+
+ while (*next_segment == delimiter) ++next_segment;
+
+ if (*path_segment == '.' && path_segment + 1 == path_segment_end)
+ return context.first_element_by_path(next_segment, delimiter);
+ else if (*path_segment == '.' && *(path_segment+1) == '.' && path_segment + 2 == path_segment_end)
+ return context.parent().first_element_by_path(next_segment, delimiter);
+ else
+ {
+ for (xml_node_struct* j = context._root->first_child; j; j = j->next_sibling)
+ {
+ if (j->name && impl::strequalrange(j->name, path_segment, static_cast<size_t>(path_segment_end - path_segment)))
+ {
+ xml_node subsearch = xml_node(j).first_element_by_path(next_segment, delimiter);
+
+ if (subsearch) return subsearch;
+ }
+ }
+
+ return xml_node();
+ }
+ }
+
+ PUGI__FN bool xml_node::traverse(xml_tree_walker& walker)
+ {
+ walker._depth = -1;
+
+ xml_node arg_begin(_root);
+ if (!walker.begin(arg_begin)) return false;
+
+ xml_node_struct* cur = _root ? _root->first_child + 0 : 0;
+
+ if (cur)
+ {
+ ++walker._depth;
+
+ do
+ {
+ xml_node arg_for_each(cur);
+ if (!walker.for_each(arg_for_each))
+ return false;
+
+ if (cur->first_child)
+ {
+ ++walker._depth;
+ cur = cur->first_child;
+ }
+ else if (cur->next_sibling)
+ cur = cur->next_sibling;
+ else
+ {
+ while (!cur->next_sibling && cur != _root && cur->parent)
+ {
+ --walker._depth;
+ cur = cur->parent;
+ }
+
+ if (cur != _root)
+ cur = cur->next_sibling;
+ }
+ }
+ while (cur && cur != _root);
+ }
+
+ assert(walker._depth == -1);
+
+ xml_node arg_end(_root);
+ return walker.end(arg_end);
+ }
+
+ PUGI__FN size_t xml_node::hash_value() const
+ {
+ return static_cast<size_t>(reinterpret_cast<uintptr_t>(_root) / sizeof(xml_node_struct));
+ }
+
+ PUGI__FN xml_node_struct* xml_node::internal_object() const
+ {
+ return _root;
+ }
+
+ PUGI__FN void xml_node::print(xml_writer& writer, const char_t* indent, unsigned int flags, xml_encoding encoding, unsigned int depth) const
+ {
+ if (!_root) return;
+
+ impl::xml_buffered_writer buffered_writer(writer, encoding);
+
+ impl::node_output(buffered_writer, _root, indent, flags, depth);
+
+ buffered_writer.flush();
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN void xml_node::print(std::basic_ostream<char, std::char_traits<char> >& stream, const char_t* indent, unsigned int flags, xml_encoding encoding, unsigned int depth) const
+ {
+ xml_writer_stream writer(stream);
+
+ print(writer, indent, flags, encoding, depth);
+ }
+
+ PUGI__FN void xml_node::print(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream, const char_t* indent, unsigned int flags, unsigned int depth) const
+ {
+ xml_writer_stream writer(stream);
+
+ print(writer, indent, flags, encoding_wchar, depth);
+ }
+#endif
+
+ PUGI__FN ptrdiff_t xml_node::offset_debug() const
+ {
+ if (!_root) return -1;
+
+ impl::xml_document_struct& doc = impl::get_document(_root);
+
+ // we can determine the offset reliably only if there is exactly once parse buffer
+ if (!doc.buffer || doc.extra_buffers) return -1;
+
+ switch (type())
+ {
+ case node_document:
+ return 0;
+
+ case node_element:
+ case node_declaration:
+ case node_pi:
+ return _root->name && (_root->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0 ? _root->name - doc.buffer : -1;
+
+ case node_pcdata:
+ case node_cdata:
+ case node_comment:
+ case node_doctype:
+ return _root->value && (_root->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0 ? _root->value - doc.buffer : -1;
+
+ default:
+ assert(false && "Invalid node type"); // unreachable
+ return -1;
+ }
+ }
+
+#ifdef __BORLANDC__
+ PUGI__FN bool operator&&(const xml_node& lhs, bool rhs)
+ {
+ return (bool)lhs && rhs;
+ }
+
+ PUGI__FN bool operator||(const xml_node& lhs, bool rhs)
+ {
+ return (bool)lhs || rhs;
+ }
+#endif
+
+ PUGI__FN xml_text::xml_text(xml_node_struct* root): _root(root)
+ {
+ }
+
+ PUGI__FN xml_node_struct* xml_text::_data() const
+ {
+ if (!_root || impl::is_text_node(_root)) return _root;
+
+ // element nodes can have value if parse_embed_pcdata was used
+ if (PUGI__NODETYPE(_root) == node_element && _root->value)
+ return _root;
+
+ for (xml_node_struct* node = _root->first_child; node; node = node->next_sibling)
+ if (impl::is_text_node(node))
+ return node;
+
+ return 0;
+ }
+
+ PUGI__FN xml_node_struct* xml_text::_data_new()
+ {
+ xml_node_struct* d = _data();
+ if (d) return d;
+
+ return xml_node(_root).append_child(node_pcdata).internal_object();
+ }
+
+ PUGI__FN xml_text::xml_text(): _root(0)
+ {
+ }
+
+ PUGI__FN static void unspecified_bool_xml_text(xml_text***)
+ {
+ }
+
+ PUGI__FN xml_text::operator xml_text::unspecified_bool_type() const
+ {
+ return _data() ? unspecified_bool_xml_text : 0;
+ }
+
+ PUGI__FN bool xml_text::operator!() const
+ {
+ return !_data();
+ }
+
+ PUGI__FN bool xml_text::empty() const
+ {
+ return _data() == 0;
+ }
+
+ PUGI__FN const char_t* xml_text::get() const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? d->value + 0 : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const char_t* xml_text::as_string(const char_t* def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? d->value + 0 : def;
+ }
+
+ PUGI__FN int xml_text::as_int(int def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_int(d->value) : def;
+ }
+
+ PUGI__FN unsigned int xml_text::as_uint(unsigned int def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_uint(d->value) : def;
+ }
+
+ PUGI__FN double xml_text::as_double(double def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_double(d->value) : def;
+ }
+
+ PUGI__FN float xml_text::as_float(float def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_float(d->value) : def;
+ }
+
+ PUGI__FN bool xml_text::as_bool(bool def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_bool(d->value) : def;
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN long long xml_text::as_llong(long long def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_llong(d->value) : def;
+ }
+
+ PUGI__FN unsigned long long xml_text::as_ullong(unsigned long long def) const
+ {
+ xml_node_struct* d = _data();
+
+ return (d && d->value) ? impl::get_value_ullong(d->value) : def;
+ }
+#endif
+
+ PUGI__FN bool xml_text::set(const char_t* rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::strcpy_insitu(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, impl::strlength(rhs)) : false;
+ }
+
+ PUGI__FN bool xml_text::set(int rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned int>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
+ }
+
+ PUGI__FN bool xml_text::set(unsigned int rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned int>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
+ }
+
+ PUGI__FN bool xml_text::set(long rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
+ }
+
+ PUGI__FN bool xml_text::set(unsigned long rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
+ }
+
+ PUGI__FN bool xml_text::set(float rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, default_float_precision) : false;
+ }
+
+ PUGI__FN bool xml_text::set(float rhs, int precision)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, precision) : false;
+ }
+
+ PUGI__FN bool xml_text::set(double rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, default_double_precision) : false;
+ }
+
+ PUGI__FN bool xml_text::set(double rhs, int precision)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_convert(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, precision) : false;
+ }
+
+ PUGI__FN bool xml_text::set(bool rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_bool(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs) : false;
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN bool xml_text::set(long long rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned long long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, rhs < 0) : false;
+ }
+
+ PUGI__FN bool xml_text::set(unsigned long long rhs)
+ {
+ xml_node_struct* dn = _data_new();
+
+ return dn ? impl::set_value_integer<unsigned long long>(dn->value, dn->header, impl::xml_memory_page_value_allocated_mask, rhs, false) : false;
+ }
+#endif
+
+ PUGI__FN xml_text& xml_text::operator=(const char_t* rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(int rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(unsigned int rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(long rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(unsigned long rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(double rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(float rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(bool rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+#ifdef PUGIXML_HAS_LONG_LONG
+ PUGI__FN xml_text& xml_text::operator=(long long rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+
+ PUGI__FN xml_text& xml_text::operator=(unsigned long long rhs)
+ {
+ set(rhs);
+ return *this;
+ }
+#endif
+
+ PUGI__FN xml_node xml_text::data() const
+ {
+ return xml_node(_data());
+ }
+
+#ifdef __BORLANDC__
+ PUGI__FN bool operator&&(const xml_text& lhs, bool rhs)
+ {
+ return (bool)lhs && rhs;
+ }
+
+ PUGI__FN bool operator||(const xml_text& lhs, bool rhs)
+ {
+ return (bool)lhs || rhs;
+ }
+#endif
+
+ PUGI__FN xml_node_iterator::xml_node_iterator()
+ {
+ }
+
+ PUGI__FN xml_node_iterator::xml_node_iterator(const xml_node& node): _wrap(node), _parent(node.parent())
+ {
+ }
+
+ PUGI__FN xml_node_iterator::xml_node_iterator(xml_node_struct* ref, xml_node_struct* parent): _wrap(ref), _parent(parent)
+ {
+ }
+
+ PUGI__FN bool xml_node_iterator::operator==(const xml_node_iterator& rhs) const
+ {
+ return _wrap._root == rhs._wrap._root && _parent._root == rhs._parent._root;
+ }
+
+ PUGI__FN bool xml_node_iterator::operator!=(const xml_node_iterator& rhs) const
+ {
+ return _wrap._root != rhs._wrap._root || _parent._root != rhs._parent._root;
+ }
+
+ PUGI__FN xml_node& xml_node_iterator::operator*() const
+ {
+ assert(_wrap._root);
+ return _wrap;
+ }
+
+ PUGI__FN xml_node* xml_node_iterator::operator->() const
+ {
+ assert(_wrap._root);
+ return const_cast<xml_node*>(&_wrap); // BCC5 workaround
+ }
+
+ PUGI__FN xml_node_iterator& xml_node_iterator::operator++()
+ {
+ assert(_wrap._root);
+ _wrap._root = _wrap._root->next_sibling;
+ return *this;
+ }
+
+ PUGI__FN xml_node_iterator xml_node_iterator::operator++(int)
+ {
+ xml_node_iterator temp = *this;
+ ++*this;
+ return temp;
+ }
+
+ PUGI__FN xml_node_iterator& xml_node_iterator::operator--()
+ {
+ _wrap = _wrap._root ? _wrap.previous_sibling() : _parent.last_child();
+ return *this;
+ }
+
+ PUGI__FN xml_node_iterator xml_node_iterator::operator--(int)
+ {
+ xml_node_iterator temp = *this;
+ --*this;
+ return temp;
+ }
+
+ PUGI__FN xml_attribute_iterator::xml_attribute_iterator()
+ {
+ }
+
+ PUGI__FN xml_attribute_iterator::xml_attribute_iterator(const xml_attribute& attr, const xml_node& parent): _wrap(attr), _parent(parent)
+ {
+ }
+
+ PUGI__FN xml_attribute_iterator::xml_attribute_iterator(xml_attribute_struct* ref, xml_node_struct* parent): _wrap(ref), _parent(parent)
+ {
+ }
+
+ PUGI__FN bool xml_attribute_iterator::operator==(const xml_attribute_iterator& rhs) const
+ {
+ return _wrap._attr == rhs._wrap._attr && _parent._root == rhs._parent._root;
+ }
+
+ PUGI__FN bool xml_attribute_iterator::operator!=(const xml_attribute_iterator& rhs) const
+ {
+ return _wrap._attr != rhs._wrap._attr || _parent._root != rhs._parent._root;
+ }
+
+ PUGI__FN xml_attribute& xml_attribute_iterator::operator*() const
+ {
+ assert(_wrap._attr);
+ return _wrap;
+ }
+
+ PUGI__FN xml_attribute* xml_attribute_iterator::operator->() const
+ {
+ assert(_wrap._attr);
+ return const_cast<xml_attribute*>(&_wrap); // BCC5 workaround
+ }
+
+ PUGI__FN xml_attribute_iterator& xml_attribute_iterator::operator++()
+ {
+ assert(_wrap._attr);
+ _wrap._attr = _wrap._attr->next_attribute;
+ return *this;
+ }
+
+ PUGI__FN xml_attribute_iterator xml_attribute_iterator::operator++(int)
+ {
+ xml_attribute_iterator temp = *this;
+ ++*this;
+ return temp;
+ }
+
+ PUGI__FN xml_attribute_iterator& xml_attribute_iterator::operator--()
+ {
+ _wrap = _wrap._attr ? _wrap.previous_attribute() : _parent.last_attribute();
+ return *this;
+ }
+
+ PUGI__FN xml_attribute_iterator xml_attribute_iterator::operator--(int)
+ {
+ xml_attribute_iterator temp = *this;
+ --*this;
+ return temp;
+ }
+
+ PUGI__FN xml_named_node_iterator::xml_named_node_iterator(): _name(0)
+ {
+ }
+
+ PUGI__FN xml_named_node_iterator::xml_named_node_iterator(const xml_node& node, const char_t* name): _wrap(node), _parent(node.parent()), _name(name)
+ {
+ }
+
+ PUGI__FN xml_named_node_iterator::xml_named_node_iterator(xml_node_struct* ref, xml_node_struct* parent, const char_t* name): _wrap(ref), _parent(parent), _name(name)
+ {
+ }
+
+ PUGI__FN bool xml_named_node_iterator::operator==(const xml_named_node_iterator& rhs) const
+ {
+ return _wrap._root == rhs._wrap._root && _parent._root == rhs._parent._root;
+ }
+
+ PUGI__FN bool xml_named_node_iterator::operator!=(const xml_named_node_iterator& rhs) const
+ {
+ return _wrap._root != rhs._wrap._root || _parent._root != rhs._parent._root;
+ }
+
+ PUGI__FN xml_node& xml_named_node_iterator::operator*() const
+ {
+ assert(_wrap._root);
+ return _wrap;
+ }
+
+ PUGI__FN xml_node* xml_named_node_iterator::operator->() const
+ {
+ assert(_wrap._root);
+ return const_cast<xml_node*>(&_wrap); // BCC5 workaround
+ }
+
+ PUGI__FN xml_named_node_iterator& xml_named_node_iterator::operator++()
+ {
+ assert(_wrap._root);
+ _wrap = _wrap.next_sibling(_name);
+ return *this;
+ }
+
+ PUGI__FN xml_named_node_iterator xml_named_node_iterator::operator++(int)
+ {
+ xml_named_node_iterator temp = *this;
+ ++*this;
+ return temp;
+ }
+
+ PUGI__FN xml_named_node_iterator& xml_named_node_iterator::operator--()
+ {
+ if (_wrap._root)
+ _wrap = _wrap.previous_sibling(_name);
+ else
+ {
+ _wrap = _parent.last_child();
+
+ if (!impl::strequal(_wrap.name(), _name))
+ _wrap = _wrap.previous_sibling(_name);
+ }
+
+ return *this;
+ }
+
+ PUGI__FN xml_named_node_iterator xml_named_node_iterator::operator--(int)
+ {
+ xml_named_node_iterator temp = *this;
+ --*this;
+ return temp;
+ }
+
+ PUGI__FN xml_parse_result::xml_parse_result(): status(status_internal_error), offset(0), encoding(encoding_auto)
+ {
+ }
+
+ PUGI__FN xml_parse_result::operator bool() const
+ {
+ return status == status_ok;
+ }
+
+ PUGI__FN const char* xml_parse_result::description() const
+ {
+ switch (status)
+ {
+ case status_ok: return "No error";
+
+ case status_file_not_found: return "File was not found";
+ case status_io_error: return "Error reading from file/stream";
+ case status_out_of_memory: return "Could not allocate memory";
+ case status_internal_error: return "Internal error occurred";
+
+ case status_unrecognized_tag: return "Could not determine tag type";
+
+ case status_bad_pi: return "Error parsing document declaration/processing instruction";
+ case status_bad_comment: return "Error parsing comment";
+ case status_bad_cdata: return "Error parsing CDATA section";
+ case status_bad_doctype: return "Error parsing document type declaration";
+ case status_bad_pcdata: return "Error parsing PCDATA section";
+ case status_bad_start_element: return "Error parsing start element tag";
+ case status_bad_attribute: return "Error parsing element attribute";
+ case status_bad_end_element: return "Error parsing end element tag";
+ case status_end_element_mismatch: return "Start-end tags mismatch";
+
+ case status_append_invalid_root: return "Unable to append nodes: root is not an element or document";
+
+ case status_no_document_element: return "No document element found";
+
+ default: return "Unknown error";
+ }
+ }
+
+ PUGI__FN xml_document::xml_document(): _buffer(0)
+ {
+ _create();
+ }
+
+ PUGI__FN xml_document::~xml_document()
+ {
+ _destroy();
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN xml_document::xml_document(xml_document&& rhs) PUGIXML_NOEXCEPT_IF_NOT_COMPACT: _buffer(0)
+ {
+ _create();
+ _move(rhs);
+ }
+
+ PUGI__FN xml_document& xml_document::operator=(xml_document&& rhs) PUGIXML_NOEXCEPT_IF_NOT_COMPACT
+ {
+ if (this == &rhs) return *this;
+
+ _destroy();
+ _create();
+ _move(rhs);
+
+ return *this;
+ }
+#endif
+
+ PUGI__FN void xml_document::reset()
+ {
+ _destroy();
+ _create();
+ }
+
+ PUGI__FN void xml_document::reset(const xml_document& proto)
+ {
+ reset();
+
+ impl::node_copy_tree(_root, proto._root);
+ }
+
+ PUGI__FN void xml_document::_create()
+ {
+ assert(!_root);
+
+ #ifdef PUGIXML_COMPACT
+ // space for page marker for the first page (uint32_t), rounded up to pointer size; assumes pointers are at least 32-bit
+ const size_t page_offset = sizeof(void*);
+ #else
+ const size_t page_offset = 0;
+ #endif
+
+ // initialize sentinel page
+ PUGI__STATIC_ASSERT(sizeof(impl::xml_memory_page) + sizeof(impl::xml_document_struct) + page_offset <= sizeof(_memory));
+
+ // prepare page structure
+ impl::xml_memory_page* page = impl::xml_memory_page::construct(_memory);
+ assert(page);
+
+ page->busy_size = impl::xml_memory_page_size;
+
+ // setup first page marker
+ #ifdef PUGIXML_COMPACT
+ // round-trip through void* to avoid 'cast increases required alignment of target type' warning
+ page->compact_page_marker = reinterpret_cast<uint32_t*>(static_cast<void*>(reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page)));
+ *page->compact_page_marker = sizeof(impl::xml_memory_page);
+ #endif
+
+ // allocate new root
+ _root = new (reinterpret_cast<char*>(page) + sizeof(impl::xml_memory_page) + page_offset) impl::xml_document_struct(page);
+ _root->prev_sibling_c = _root;
+
+ // setup sentinel page
+ page->allocator = static_cast<impl::xml_document_struct*>(_root);
+
+ // setup hash table pointer in allocator
+ #ifdef PUGIXML_COMPACT
+ page->allocator->_hash = &static_cast<impl::xml_document_struct*>(_root)->hash;
+ #endif
+
+ // verify the document allocation
+ assert(reinterpret_cast<char*>(_root) + sizeof(impl::xml_document_struct) <= _memory + sizeof(_memory));
+ }
+
+ PUGI__FN void xml_document::_destroy()
+ {
+ assert(_root);
+
+ // destroy static storage
+ if (_buffer)
+ {
+ impl::xml_memory::deallocate(_buffer);
+ _buffer = 0;
+ }
+
+ // destroy extra buffers (note: no need to destroy linked list nodes, they're allocated using document allocator)
+ for (impl::xml_extra_buffer* extra = static_cast<impl::xml_document_struct*>(_root)->extra_buffers; extra; extra = extra->next)
+ {
+ if (extra->buffer) impl::xml_memory::deallocate(extra->buffer);
+ }
+
+ // destroy dynamic storage, leave sentinel page (it's in static memory)
+ impl::xml_memory_page* root_page = PUGI__GETPAGE(_root);
+ assert(root_page && !root_page->prev);
+ assert(reinterpret_cast<char*>(root_page) >= _memory && reinterpret_cast<char*>(root_page) < _memory + sizeof(_memory));
+
+ for (impl::xml_memory_page* page = root_page->next; page; )
+ {
+ impl::xml_memory_page* next = page->next;
+
+ impl::xml_allocator::deallocate_page(page);
+
+ page = next;
+ }
+
+ #ifdef PUGIXML_COMPACT
+ // destroy hash table
+ static_cast<impl::xml_document_struct*>(_root)->hash.clear();
+ #endif
+
+ _root = 0;
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN void xml_document::_move(xml_document& rhs) PUGIXML_NOEXCEPT_IF_NOT_COMPACT
+ {
+ impl::xml_document_struct* doc = static_cast<impl::xml_document_struct*>(_root);
+ impl::xml_document_struct* other = static_cast<impl::xml_document_struct*>(rhs._root);
+
+ // save first child pointer for later; this needs hash access
+ xml_node_struct* other_first_child = other->first_child;
+
+ #ifdef PUGIXML_COMPACT
+ // reserve space for the hash table up front; this is the only operation that can fail
+ // if it does, we have no choice but to throw (if we have exceptions)
+ if (other_first_child)
+ {
+ size_t other_children = 0;
+ for (xml_node_struct* node = other_first_child; node; node = node->next_sibling)
+ other_children++;
+
+ // in compact mode, each pointer assignment could result in a hash table request
+ // during move, we have to relocate document first_child and parents of all children
+ // normally there's just one child and its parent has a pointerless encoding but
+ // we assume the worst here
+ if (!other->_hash->reserve(other_children + 1))
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return;
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+ }
+ #endif
+
+ // move allocation state
+ // note that other->_root may point to the embedded document page, in which case we should keep original (empty) state
+ if (other->_root != PUGI__GETPAGE(other))
+ {
+ doc->_root = other->_root;
+ doc->_busy_size = other->_busy_size;
+ }
+
+ // move buffer state
+ doc->buffer = other->buffer;
+ doc->extra_buffers = other->extra_buffers;
+ _buffer = rhs._buffer;
+
+ #ifdef PUGIXML_COMPACT
+ // move compact hash; note that the hash table can have pointers to other but they will be "inactive", similarly to nodes removed with remove_child
+ doc->hash = other->hash;
+ doc->_hash = &doc->hash;
+
+ // make sure we don't access other hash up until the end when we reinitialize other document
+ other->_hash = 0;
+ #endif
+
+ // move page structure
+ impl::xml_memory_page* doc_page = PUGI__GETPAGE(doc);
+ assert(doc_page && !doc_page->prev && !doc_page->next);
+
+ impl::xml_memory_page* other_page = PUGI__GETPAGE(other);
+ assert(other_page && !other_page->prev);
+
+ // relink pages since root page is embedded into xml_document
+ if (impl::xml_memory_page* page = other_page->next)
+ {
+ assert(page->prev == other_page);
+
+ page->prev = doc_page;
+
+ doc_page->next = page;
+ other_page->next = 0;
+ }
+
+ // make sure pages point to the correct document state
+ for (impl::xml_memory_page* page = doc_page->next; page; page = page->next)
+ {
+ assert(page->allocator == other);
+
+ page->allocator = doc;
+
+ #ifdef PUGIXML_COMPACT
+ // this automatically migrates most children between documents and prevents ->parent assignment from allocating
+ if (page->compact_shared_parent == other)
+ page->compact_shared_parent = doc;
+ #endif
+ }
+
+ // move tree structure
+ assert(!doc->first_child);
+
+ doc->first_child = other_first_child;
+
+ for (xml_node_struct* node = other_first_child; node; node = node->next_sibling)
+ {
+ #ifdef PUGIXML_COMPACT
+ // most children will have migrated when we reassigned compact_shared_parent
+ assert(node->parent == other || node->parent == doc);
+
+ node->parent = doc;
+ #else
+ assert(node->parent == other);
+ node->parent = doc;
+ #endif
+ }
+
+ // reset other document
+ new (other) impl::xml_document_struct(PUGI__GETPAGE(other));
+ rhs._buffer = 0;
+ }
+#endif
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN xml_parse_result xml_document::load(std::basic_istream<char, std::char_traits<char> >& stream, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ return impl::load_stream_impl(static_cast<impl::xml_document_struct*>(_root), stream, options, encoding, &_buffer);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load(std::basic_istream<wchar_t, std::char_traits<wchar_t> >& stream, unsigned int options)
+ {
+ reset();
+
+ return impl::load_stream_impl(static_cast<impl::xml_document_struct*>(_root), stream, options, encoding_wchar, &_buffer);
+ }
+#endif
+
+ PUGI__FN xml_parse_result xml_document::load_string(const char_t* contents, unsigned int options)
+ {
+ // Force native encoding (skip autodetection)
+ #ifdef PUGIXML_WCHAR_MODE
+ xml_encoding encoding = encoding_wchar;
+ #else
+ xml_encoding encoding = encoding_utf8;
+ #endif
+
+ return load_buffer(contents, impl::strlength(contents) * sizeof(char_t), options, encoding);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load(const char_t* contents, unsigned int options)
+ {
+ return load_string(contents, options);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load_file(const char* path_, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ using impl::auto_deleter; // MSVC7 workaround
+ auto_deleter<FILE> file(impl::open_file(path_, "rb"), impl::close_file);
+
+ return impl::load_file_impl(static_cast<impl::xml_document_struct*>(_root), file.data, options, encoding, &_buffer);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load_file(const wchar_t* path_, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ using impl::auto_deleter; // MSVC7 workaround
+ auto_deleter<FILE> file(impl::open_file_wide(path_, L"rb"), impl::close_file);
+
+ return impl::load_file_impl(static_cast<impl::xml_document_struct*>(_root), file.data, options, encoding, &_buffer);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, const_cast<void*>(contents), size, options, encoding, false, false, &_buffer);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load_buffer_inplace(void* contents, size_t size, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, contents, size, options, encoding, true, false, &_buffer);
+ }
+
+ PUGI__FN xml_parse_result xml_document::load_buffer_inplace_own(void* contents, size_t size, unsigned int options, xml_encoding encoding)
+ {
+ reset();
+
+ return impl::load_buffer_impl(static_cast<impl::xml_document_struct*>(_root), _root, contents, size, options, encoding, true, true, &_buffer);
+ }
+
+ PUGI__FN void xml_document::save(xml_writer& writer, const char_t* indent, unsigned int flags, xml_encoding encoding) const
+ {
+ impl::xml_buffered_writer buffered_writer(writer, encoding);
+
+ if ((flags & format_write_bom) && encoding != encoding_latin1)
+ {
+ // BOM always represents the codepoint U+FEFF, so just write it in native encoding
+ #ifdef PUGIXML_WCHAR_MODE
+ unsigned int bom = 0xfeff;
+ buffered_writer.write(static_cast<wchar_t>(bom));
+ #else
+ buffered_writer.write('\xef', '\xbb', '\xbf');
+ #endif
+ }
+
+ if (!(flags & format_no_declaration) && !impl::has_declaration(_root))
+ {
+ buffered_writer.write_string(PUGIXML_TEXT("<?xml version=\"1.0\""));
+ if (encoding == encoding_latin1) buffered_writer.write_string(PUGIXML_TEXT(" encoding=\"ISO-8859-1\""));
+ buffered_writer.write('?', '>');
+ if (!(flags & format_raw)) buffered_writer.write('\n');
+ }
+
+ impl::node_output(buffered_writer, _root, indent, flags, 0);
+
+ buffered_writer.flush();
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN void xml_document::save(std::basic_ostream<char, std::char_traits<char> >& stream, const char_t* indent, unsigned int flags, xml_encoding encoding) const
+ {
+ xml_writer_stream writer(stream);
+
+ save(writer, indent, flags, encoding);
+ }
+
+ PUGI__FN void xml_document::save(std::basic_ostream<wchar_t, std::char_traits<wchar_t> >& stream, const char_t* indent, unsigned int flags) const
+ {
+ xml_writer_stream writer(stream);
+
+ save(writer, indent, flags, encoding_wchar);
+ }
+#endif
+
+ PUGI__FN bool xml_document::save_file(const char* path_, const char_t* indent, unsigned int flags, xml_encoding encoding) const
+ {
+ using impl::auto_deleter; // MSVC7 workaround
+ auto_deleter<FILE> file(impl::open_file(path_, (flags & format_save_file_text) ? "w" : "wb"), impl::close_file);
+
+ return impl::save_file_impl(*this, file.data, indent, flags, encoding);
+ }
+
+ PUGI__FN bool xml_document::save_file(const wchar_t* path_, const char_t* indent, unsigned int flags, xml_encoding encoding) const
+ {
+ using impl::auto_deleter; // MSVC7 workaround
+ auto_deleter<FILE> file(impl::open_file_wide(path_, (flags & format_save_file_text) ? L"w" : L"wb"), impl::close_file);
+
+ return impl::save_file_impl(*this, file.data, indent, flags, encoding);
+ }
+
+ PUGI__FN xml_node xml_document::document_element() const
+ {
+ assert(_root);
+
+ for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
+ if (PUGI__NODETYPE(i) == node_element)
+ return xml_node(i);
+
+ return xml_node();
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN std::string PUGIXML_FUNCTION as_utf8(const wchar_t* str)
+ {
+ assert(str);
+
+ return impl::as_utf8_impl(str, impl::strlength_wide(str));
+ }
+
+ PUGI__FN std::string PUGIXML_FUNCTION as_utf8(const std::basic_string<wchar_t>& str)
+ {
+ return impl::as_utf8_impl(str.c_str(), str.size());
+ }
+
+ PUGI__FN std::basic_string<wchar_t> PUGIXML_FUNCTION as_wide(const char* str)
+ {
+ assert(str);
+
+ return impl::as_wide_impl(str, strlen(str));
+ }
+
+ PUGI__FN std::basic_string<wchar_t> PUGIXML_FUNCTION as_wide(const std::string& str)
+ {
+ return impl::as_wide_impl(str.c_str(), str.size());
+ }
+#endif
+
+ PUGI__FN void PUGIXML_FUNCTION set_memory_management_functions(allocation_function allocate, deallocation_function deallocate)
+ {
+ impl::xml_memory::allocate = allocate;
+ impl::xml_memory::deallocate = deallocate;
+ }
+
+ PUGI__FN allocation_function PUGIXML_FUNCTION get_memory_allocation_function()
+ {
+ return impl::xml_memory::allocate;
+ }
+
+ PUGI__FN deallocation_function PUGIXML_FUNCTION get_memory_deallocation_function()
+ {
+ return impl::xml_memory::deallocate;
+ }
+}
+
+#if !defined(PUGIXML_NO_STL) && (defined(_MSC_VER) || defined(__ICC))
+namespace std
+{
+ // Workarounds for (non-standard) iterator category detection for older versions (MSVC7/IC8 and earlier)
+ PUGI__FN std::bidirectional_iterator_tag _Iter_cat(const pugi::xml_node_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+
+ PUGI__FN std::bidirectional_iterator_tag _Iter_cat(const pugi::xml_attribute_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+
+ PUGI__FN std::bidirectional_iterator_tag _Iter_cat(const pugi::xml_named_node_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+}
+#endif
+
+#if !defined(PUGIXML_NO_STL) && defined(__SUNPRO_CC)
+namespace std
+{
+ // Workarounds for (non-standard) iterator category detection
+ PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_node_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+
+ PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_attribute_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+
+ PUGI__FN std::bidirectional_iterator_tag __iterator_category(const pugi::xml_named_node_iterator&)
+ {
+ return std::bidirectional_iterator_tag();
+ }
+}
+#endif
+
+#ifndef PUGIXML_NO_XPATH
+// STL replacements
+PUGI__NS_BEGIN
+ struct equal_to
+ {
+ template <typename T> bool operator()(const T& lhs, const T& rhs) const
+ {
+ return lhs == rhs;
+ }
+ };
+
+ struct not_equal_to
+ {
+ template <typename T> bool operator()(const T& lhs, const T& rhs) const
+ {
+ return lhs != rhs;
+ }
+ };
+
+ struct less
+ {
+ template <typename T> bool operator()(const T& lhs, const T& rhs) const
+ {
+ return lhs < rhs;
+ }
+ };
+
+ struct less_equal
+ {
+ template <typename T> bool operator()(const T& lhs, const T& rhs) const
+ {
+ return lhs <= rhs;
+ }
+ };
+
+ template <typename T> inline void swap(T& lhs, T& rhs)
+ {
+ T temp = lhs;
+ lhs = rhs;
+ rhs = temp;
+ }
+
+ template <typename I, typename Pred> PUGI__FN I min_element(I begin, I end, const Pred& pred)
+ {
+ I result = begin;
+
+ for (I it = begin + 1; it != end; ++it)
+ if (pred(*it, *result))
+ result = it;
+
+ return result;
+ }
+
+ template <typename I> PUGI__FN void reverse(I begin, I end)
+ {
+ while (end - begin > 1)
+ swap(*begin++, *--end);
+ }
+
+ template <typename I> PUGI__FN I unique(I begin, I end)
+ {
+ // fast skip head
+ while (end - begin > 1 && *begin != *(begin + 1))
+ begin++;
+
+ if (begin == end)
+ return begin;
+
+ // last written element
+ I write = begin++;
+
+ // merge unique elements
+ while (begin != end)
+ {
+ if (*begin != *write)
+ *++write = *begin++;
+ else
+ begin++;
+ }
+
+ // past-the-end (write points to live element)
+ return write + 1;
+ }
+
+ template <typename T, typename Pred> PUGI__FN void insertion_sort(T* begin, T* end, const Pred& pred)
+ {
+ if (begin == end)
+ return;
+
+ for (T* it = begin + 1; it != end; ++it)
+ {
+ T val = *it;
+ T* hole = it;
+
+ // move hole backwards
+ while (hole > begin && pred(val, *(hole - 1)))
+ {
+ *hole = *(hole - 1);
+ hole--;
+ }
+
+ // fill hole with element
+ *hole = val;
+ }
+ }
+
+ template <typename I, typename Pred> inline I median3(I first, I middle, I last, const Pred& pred)
+ {
+ if (pred(*middle, *first))
+ swap(middle, first);
+ if (pred(*last, *middle))
+ swap(last, middle);
+ if (pred(*middle, *first))
+ swap(middle, first);
+
+ return middle;
+ }
+
+ template <typename T, typename Pred> PUGI__FN void partition3(T* begin, T* end, T pivot, const Pred& pred, T** out_eqbeg, T** out_eqend)
+ {
+ // invariant: array is split into 4 groups: = < ? > (each variable denotes the boundary between the groups)
+ T* eq = begin;
+ T* lt = begin;
+ T* gt = end;
+
+ while (lt < gt)
+ {
+ if (pred(*lt, pivot))
+ lt++;
+ else if (*lt == pivot)
+ swap(*eq++, *lt++);
+ else
+ swap(*lt, *--gt);
+ }
+
+ // we now have just 4 groups: = < >; move equal elements to the middle
+ T* eqbeg = gt;
+
+ for (T* it = begin; it != eq; ++it)
+ swap(*it, *--eqbeg);
+
+ *out_eqbeg = eqbeg;
+ *out_eqend = gt;
+ }
+
+ template <typename I, typename Pred> PUGI__FN void sort(I begin, I end, const Pred& pred)
+ {
+ // sort large chunks
+ while (end - begin > 16)
+ {
+ // find median element
+ I middle = begin + (end - begin) / 2;
+ I median = median3(begin, middle, end - 1, pred);
+
+ // partition in three chunks (< = >)
+ I eqbeg, eqend;
+ partition3(begin, end, *median, pred, &eqbeg, &eqend);
+
+ // loop on larger half
+ if (eqbeg - begin > end - eqend)
+ {
+ sort(eqend, end, pred);
+ end = eqbeg;
+ }
+ else
+ {
+ sort(begin, eqbeg, pred);
+ begin = eqend;
+ }
+ }
+
+ // insertion sort small chunk
+ insertion_sort(begin, end, pred);
+ }
+
+ PUGI__FN bool hash_insert(const void** table, size_t size, const void* key)
+ {
+ assert(key);
+
+ unsigned int h = static_cast<unsigned int>(reinterpret_cast<uintptr_t>(key));
+
+ // MurmurHash3 32-bit finalizer
+ h ^= h >> 16;
+ h *= 0x85ebca6bu;
+ h ^= h >> 13;
+ h *= 0xc2b2ae35u;
+ h ^= h >> 16;
+
+ size_t hashmod = size - 1;
+ size_t bucket = h & hashmod;
+
+ for (size_t probe = 0; probe <= hashmod; ++probe)
+ {
+ if (table[bucket] == 0)
+ {
+ table[bucket] = key;
+ return true;
+ }
+
+ if (table[bucket] == key)
+ return false;
+
+ // hash collision, quadratic probing
+ bucket = (bucket + probe + 1) & hashmod;
+ }
+
+ assert(false && "Hash table is full"); // unreachable
+ return false;
+ }
+PUGI__NS_END
+
+// Allocator used for AST and evaluation stacks
+PUGI__NS_BEGIN
+ static const size_t xpath_memory_page_size =
+ #ifdef PUGIXML_MEMORY_XPATH_PAGE_SIZE
+ PUGIXML_MEMORY_XPATH_PAGE_SIZE
+ #else
+ 4096
+ #endif
+ ;
+
+ static const uintptr_t xpath_memory_block_alignment = sizeof(double) > sizeof(void*) ? sizeof(double) : sizeof(void*);
+
+ struct xpath_memory_block
+ {
+ xpath_memory_block* next;
+ size_t capacity;
+
+ union
+ {
+ char data[xpath_memory_page_size];
+ double alignment;
+ };
+ };
+
+ struct xpath_allocator
+ {
+ xpath_memory_block* _root;
+ size_t _root_size;
+ bool* _error;
+
+ xpath_allocator(xpath_memory_block* root, bool* error = 0): _root(root), _root_size(0), _error(error)
+ {
+ }
+
+ void* allocate(size_t size)
+ {
+ // round size up to block alignment boundary
+ size = (size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);
+
+ if (_root_size + size <= _root->capacity)
+ {
+ void* buf = &_root->data[0] + _root_size;
+ _root_size += size;
+ return buf;
+ }
+ else
+ {
+ // make sure we have at least 1/4th of the page free after allocation to satisfy subsequent allocation requests
+ size_t block_capacity_base = sizeof(_root->data);
+ size_t block_capacity_req = size + block_capacity_base / 4;
+ size_t block_capacity = (block_capacity_base > block_capacity_req) ? block_capacity_base : block_capacity_req;
+
+ size_t block_size = block_capacity + offsetof(xpath_memory_block, data);
+
+ xpath_memory_block* block = static_cast<xpath_memory_block*>(xml_memory::allocate(block_size));
+ if (!block)
+ {
+ if (_error) *_error = true;
+ return 0;
+ }
+
+ block->next = _root;
+ block->capacity = block_capacity;
+
+ _root = block;
+ _root_size = size;
+
+ return block->data;
+ }
+ }
+
+ void* reallocate(void* ptr, size_t old_size, size_t new_size)
+ {
+ // round size up to block alignment boundary
+ old_size = (old_size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);
+ new_size = (new_size + xpath_memory_block_alignment - 1) & ~(xpath_memory_block_alignment - 1);
+
+ // we can only reallocate the last object
+ assert(ptr == 0 || static_cast<char*>(ptr) + old_size == &_root->data[0] + _root_size);
+
+ // try to reallocate the object inplace
+ if (ptr && _root_size - old_size + new_size <= _root->capacity)
+ {
+ _root_size = _root_size - old_size + new_size;
+ return ptr;
+ }
+
+ // allocate a new block
+ void* result = allocate(new_size);
+ if (!result) return 0;
+
+ // we have a new block
+ if (ptr)
+ {
+ // copy old data (we only support growing)
+ assert(new_size >= old_size);
+ memcpy(result, ptr, old_size);
+
+ // free the previous page if it had no other objects
+ assert(_root->data == result);
+ assert(_root->next);
+
+ if (_root->next->data == ptr)
+ {
+ // deallocate the whole page, unless it was the first one
+ xpath_memory_block* next = _root->next->next;
+
+ if (next)
+ {
+ xml_memory::deallocate(_root->next);
+ _root->next = next;
+ }
+ }
+ }
+
+ return result;
+ }
+
+ void revert(const xpath_allocator& state)
+ {
+ // free all new pages
+ xpath_memory_block* cur = _root;
+
+ while (cur != state._root)
+ {
+ xpath_memory_block* next = cur->next;
+
+ xml_memory::deallocate(cur);
+
+ cur = next;
+ }
+
+ // restore state
+ _root = state._root;
+ _root_size = state._root_size;
+ }
+
+ void release()
+ {
+ xpath_memory_block* cur = _root;
+ assert(cur);
+
+ while (cur->next)
+ {
+ xpath_memory_block* next = cur->next;
+
+ xml_memory::deallocate(cur);
+
+ cur = next;
+ }
+ }
+ };
+
+ struct xpath_allocator_capture
+ {
+ xpath_allocator_capture(xpath_allocator* alloc): _target(alloc), _state(*alloc)
+ {
+ }
+
+ ~xpath_allocator_capture()
+ {
+ _target->revert(_state);
+ }
+
+ xpath_allocator* _target;
+ xpath_allocator _state;
+ };
+
+ struct xpath_stack
+ {
+ xpath_allocator* result;
+ xpath_allocator* temp;
+ };
+
+ struct xpath_stack_data
+ {
+ xpath_memory_block blocks[2];
+ xpath_allocator result;
+ xpath_allocator temp;
+ xpath_stack stack;
+ bool oom;
+
+ xpath_stack_data(): result(blocks + 0, &oom), temp(blocks + 1, &oom), oom(false)
+ {
+ blocks[0].next = blocks[1].next = 0;
+ blocks[0].capacity = blocks[1].capacity = sizeof(blocks[0].data);
+
+ stack.result = &result;
+ stack.temp = &temp;
+ }
+
+ ~xpath_stack_data()
+ {
+ result.release();
+ temp.release();
+ }
+ };
+PUGI__NS_END
+
+// String class
+PUGI__NS_BEGIN
+ class xpath_string
+ {
+ const char_t* _buffer;
+ bool _uses_heap;
+ size_t _length_heap;
+
+ static char_t* duplicate_string(const char_t* string, size_t length, xpath_allocator* alloc)
+ {
+ char_t* result = static_cast<char_t*>(alloc->allocate((length + 1) * sizeof(char_t)));
+ if (!result) return 0;
+
+ memcpy(result, string, length * sizeof(char_t));
+ result[length] = 0;
+
+ return result;
+ }
+
+ xpath_string(const char_t* buffer, bool uses_heap_, size_t length_heap): _buffer(buffer), _uses_heap(uses_heap_), _length_heap(length_heap)
+ {
+ }
+
+ public:
+ static xpath_string from_const(const char_t* str)
+ {
+ return xpath_string(str, false, 0);
+ }
+
+ static xpath_string from_heap_preallocated(const char_t* begin, const char_t* end)
+ {
+ assert(begin <= end && *end == 0);
+
+ return xpath_string(begin, true, static_cast<size_t>(end - begin));
+ }
+
+ static xpath_string from_heap(const char_t* begin, const char_t* end, xpath_allocator* alloc)
+ {
+ assert(begin <= end);
+
+ if (begin == end)
+ return xpath_string();
+
+ size_t length = static_cast<size_t>(end - begin);
+ const char_t* data = duplicate_string(begin, length, alloc);
+
+ return data ? xpath_string(data, true, length) : xpath_string();
+ }
+
+ xpath_string(): _buffer(PUGIXML_TEXT("")), _uses_heap(false), _length_heap(0)
+ {
+ }
+
+ void append(const xpath_string& o, xpath_allocator* alloc)
+ {
+ // skip empty sources
+ if (!*o._buffer) return;
+
+ // fast append for constant empty target and constant source
+ if (!*_buffer && !_uses_heap && !o._uses_heap)
+ {
+ _buffer = o._buffer;
+ }
+ else
+ {
+ // need to make heap copy
+ size_t target_length = length();
+ size_t source_length = o.length();
+ size_t result_length = target_length + source_length;
+
+ // allocate new buffer
+ char_t* result = static_cast<char_t*>(alloc->reallocate(_uses_heap ? const_cast<char_t*>(_buffer) : 0, (target_length + 1) * sizeof(char_t), (result_length + 1) * sizeof(char_t)));
+ if (!result) return;
+
+ // append first string to the new buffer in case there was no reallocation
+ if (!_uses_heap) memcpy(result, _buffer, target_length * sizeof(char_t));
+
+ // append second string to the new buffer
+ memcpy(result + target_length, o._buffer, source_length * sizeof(char_t));
+ result[result_length] = 0;
+
+ // finalize
+ _buffer = result;
+ _uses_heap = true;
+ _length_heap = result_length;
+ }
+ }
+
+ const char_t* c_str() const
+ {
+ return _buffer;
+ }
+
+ size_t length() const
+ {
+ return _uses_heap ? _length_heap : strlength(_buffer);
+ }
+
+ char_t* data(xpath_allocator* alloc)
+ {
+ // make private heap copy
+ if (!_uses_heap)
+ {
+ size_t length_ = strlength(_buffer);
+ const char_t* data_ = duplicate_string(_buffer, length_, alloc);
+
+ if (!data_) return 0;
+
+ _buffer = data_;
+ _uses_heap = true;
+ _length_heap = length_;
+ }
+
+ return const_cast<char_t*>(_buffer);
+ }
+
+ bool empty() const
+ {
+ return *_buffer == 0;
+ }
+
+ bool operator==(const xpath_string& o) const
+ {
+ return strequal(_buffer, o._buffer);
+ }
+
+ bool operator!=(const xpath_string& o) const
+ {
+ return !strequal(_buffer, o._buffer);
+ }
+
+ bool uses_heap() const
+ {
+ return _uses_heap;
+ }
+ };
+PUGI__NS_END
+
+PUGI__NS_BEGIN
+ PUGI__FN bool starts_with(const char_t* string, const char_t* pattern)
+ {
+ while (*pattern && *string == *pattern)
+ {
+ string++;
+ pattern++;
+ }
+
+ return *pattern == 0;
+ }
+
+ PUGI__FN const char_t* find_char(const char_t* s, char_t c)
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcschr(s, c);
+ #else
+ return strchr(s, c);
+ #endif
+ }
+
+ PUGI__FN const char_t* find_substring(const char_t* s, const char_t* p)
+ {
+ #ifdef PUGIXML_WCHAR_MODE
+ // MSVC6 wcsstr bug workaround (if s is empty it always returns 0)
+ return (*p == 0) ? s : wcsstr(s, p);
+ #else
+ return strstr(s, p);
+ #endif
+ }
+
+ // Converts symbol to lower case, if it is an ASCII one
+ PUGI__FN char_t tolower_ascii(char_t ch)
+ {
+ return static_cast<unsigned int>(ch - 'A') < 26 ? static_cast<char_t>(ch | ' ') : ch;
+ }
+
+ PUGI__FN xpath_string string_value(const xpath_node& na, xpath_allocator* alloc)
+ {
+ if (na.attribute())
+ return xpath_string::from_const(na.attribute().value());
+ else
+ {
+ xml_node n = na.node();
+
+ switch (n.type())
+ {
+ case node_pcdata:
+ case node_cdata:
+ case node_comment:
+ case node_pi:
+ return xpath_string::from_const(n.value());
+
+ case node_document:
+ case node_element:
+ {
+ xpath_string result;
+
+ // element nodes can have value if parse_embed_pcdata was used
+ if (n.value()[0])
+ result.append(xpath_string::from_const(n.value()), alloc);
+
+ xml_node cur = n.first_child();
+
+ while (cur && cur != n)
+ {
+ if (cur.type() == node_pcdata || cur.type() == node_cdata)
+ result.append(xpath_string::from_const(cur.value()), alloc);
+
+ if (cur.first_child())
+ cur = cur.first_child();
+ else if (cur.next_sibling())
+ cur = cur.next_sibling();
+ else
+ {
+ while (!cur.next_sibling() && cur != n)
+ cur = cur.parent();
+
+ if (cur != n) cur = cur.next_sibling();
+ }
+ }
+
+ return result;
+ }
+
+ default:
+ return xpath_string();
+ }
+ }
+ }
+
+ PUGI__FN bool node_is_before_sibling(xml_node_struct* ln, xml_node_struct* rn)
+ {
+ assert(ln->parent == rn->parent);
+
+ // there is no common ancestor (the shared parent is null), nodes are from different documents
+ if (!ln->parent) return ln < rn;
+
+ // determine sibling order
+ xml_node_struct* ls = ln;
+ xml_node_struct* rs = rn;
+
+ while (ls && rs)
+ {
+ if (ls == rn) return true;
+ if (rs == ln) return false;
+
+ ls = ls->next_sibling;
+ rs = rs->next_sibling;
+ }
+
+ // if rn sibling chain ended ln must be before rn
+ return !rs;
+ }
+
+ PUGI__FN bool node_is_before(xml_node_struct* ln, xml_node_struct* rn)
+ {
+ // find common ancestor at the same depth, if any
+ xml_node_struct* lp = ln;
+ xml_node_struct* rp = rn;
+
+ while (lp && rp && lp->parent != rp->parent)
+ {
+ lp = lp->parent;
+ rp = rp->parent;
+ }
+
+ // parents are the same!
+ if (lp && rp) return node_is_before_sibling(lp, rp);
+
+ // nodes are at different depths, need to normalize heights
+ bool left_higher = !lp;
+
+ while (lp)
+ {
+ lp = lp->parent;
+ ln = ln->parent;
+ }
+
+ while (rp)
+ {
+ rp = rp->parent;
+ rn = rn->parent;
+ }
+
+ // one node is the ancestor of the other
+ if (ln == rn) return left_higher;
+
+ // find common ancestor... again
+ while (ln->parent != rn->parent)
+ {
+ ln = ln->parent;
+ rn = rn->parent;
+ }
+
+ return node_is_before_sibling(ln, rn);
+ }
+
+ PUGI__FN bool node_is_ancestor(xml_node_struct* parent, xml_node_struct* node)
+ {
+ while (node && node != parent) node = node->parent;
+
+ return parent && node == parent;
+ }
+
+ PUGI__FN const void* document_buffer_order(const xpath_node& xnode)
+ {
+ xml_node_struct* node = xnode.node().internal_object();
+
+ if (node)
+ {
+ if ((get_document(node).header & xml_memory_page_contents_shared_mask) == 0)
+ {
+ if (node->name && (node->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0) return node->name;
+ if (node->value && (node->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0) return node->value;
+ }
+
+ return 0;
+ }
+
+ xml_attribute_struct* attr = xnode.attribute().internal_object();
+
+ if (attr)
+ {
+ if ((get_document(attr).header & xml_memory_page_contents_shared_mask) == 0)
+ {
+ if ((attr->header & impl::xml_memory_page_name_allocated_or_shared_mask) == 0) return attr->name;
+ if ((attr->header & impl::xml_memory_page_value_allocated_or_shared_mask) == 0) return attr->value;
+ }
+
+ return 0;
+ }
+
+ return 0;
+ }
+
+ struct document_order_comparator
+ {
+ bool operator()(const xpath_node& lhs, const xpath_node& rhs) const
+ {
+ // optimized document order based check
+ const void* lo = document_buffer_order(lhs);
+ const void* ro = document_buffer_order(rhs);
+
+ if (lo && ro) return lo < ro;
+
+ // slow comparison
+ xml_node ln = lhs.node(), rn = rhs.node();
+
+ // compare attributes
+ if (lhs.attribute() && rhs.attribute())
+ {
+ // shared parent
+ if (lhs.parent() == rhs.parent())
+ {
+ // determine sibling order
+ for (xml_attribute a = lhs.attribute(); a; a = a.next_attribute())
+ if (a == rhs.attribute())
+ return true;
+
+ return false;
+ }
+
+ // compare attribute parents
+ ln = lhs.parent();
+ rn = rhs.parent();
+ }
+ else if (lhs.attribute())
+ {
+ // attributes go after the parent element
+ if (lhs.parent() == rhs.node()) return false;
+
+ ln = lhs.parent();
+ }
+ else if (rhs.attribute())
+ {
+ // attributes go after the parent element
+ if (rhs.parent() == lhs.node()) return true;
+
+ rn = rhs.parent();
+ }
+
+ if (ln == rn) return false;
+
+ if (!ln || !rn) return ln < rn;
+
+ return node_is_before(ln.internal_object(), rn.internal_object());
+ }
+ };
+
+ PUGI__FN double gen_nan()
+ {
+ #if defined(__STDC_IEC_559__) || ((FLT_RADIX - 0 == 2) && (FLT_MAX_EXP - 0 == 128) && (FLT_MANT_DIG - 0 == 24))
+ PUGI__STATIC_ASSERT(sizeof(float) == sizeof(uint32_t));
+ typedef uint32_t UI; // BCC5 workaround
+ union { float f; UI i; } u;
+ u.i = 0x7fc00000;
+ return double(u.f);
+ #else
+ // fallback
+ const volatile double zero = 0.0;
+ return zero / zero;
+ #endif
+ }
+
+ PUGI__FN bool is_nan(double value)
+ {
+ #if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__)
+ return !!_isnan(value);
+ #elif defined(fpclassify) && defined(FP_NAN)
+ return fpclassify(value) == FP_NAN;
+ #else
+ // fallback
+ const volatile double v = value;
+ return v != v;
+ #endif
+ }
+
+ PUGI__FN const char_t* convert_number_to_string_special(double value)
+ {
+ #if defined(PUGI__MSVC_CRT_VERSION) || defined(__BORLANDC__)
+ if (_finite(value)) return (value == 0) ? PUGIXML_TEXT("0") : 0;
+ if (_isnan(value)) return PUGIXML_TEXT("NaN");
+ return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");
+ #elif defined(fpclassify) && defined(FP_NAN) && defined(FP_INFINITE) && defined(FP_ZERO)
+ switch (fpclassify(value))
+ {
+ case FP_NAN:
+ return PUGIXML_TEXT("NaN");
+
+ case FP_INFINITE:
+ return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");
+
+ case FP_ZERO:
+ return PUGIXML_TEXT("0");
+
+ default:
+ return 0;
+ }
+ #else
+ // fallback
+ const volatile double v = value;
+
+ if (v == 0) return PUGIXML_TEXT("0");
+ if (v != v) return PUGIXML_TEXT("NaN");
+ if (v * 2 == v) return value > 0 ? PUGIXML_TEXT("Infinity") : PUGIXML_TEXT("-Infinity");
+ return 0;
+ #endif
+ }
+
+ PUGI__FN bool convert_number_to_boolean(double value)
+ {
+ return (value != 0 && !is_nan(value));
+ }
+
+ PUGI__FN void truncate_zeros(char* begin, char* end)
+ {
+ while (begin != end && end[-1] == '0') end--;
+
+ *end = 0;
+ }
+
+ // gets mantissa digits in the form of 0.xxxxx with 0. implied and the exponent
+#if defined(PUGI__MSVC_CRT_VERSION) && PUGI__MSVC_CRT_VERSION >= 1400
+ PUGI__FN void convert_number_to_mantissa_exponent(double value, char (&buffer)[32], char** out_mantissa, int* out_exponent)
+ {
+ // get base values
+ int sign, exponent;
+ _ecvt_s(buffer, sizeof(buffer), value, DBL_DIG + 1, &exponent, &sign);
+
+ // truncate redundant zeros
+ truncate_zeros(buffer, buffer + strlen(buffer));
+
+ // fill results
+ *out_mantissa = buffer;
+ *out_exponent = exponent;
+ }
+#else
+ PUGI__FN void convert_number_to_mantissa_exponent(double value, char (&buffer)[32], char** out_mantissa, int* out_exponent)
+ {
+ // get a scientific notation value with IEEE DBL_DIG decimals
+ PUGI__SNPRINTF(buffer, "%.*e", DBL_DIG, value);
+
+ // get the exponent (possibly negative)
+ char* exponent_string = strchr(buffer, 'e');
+ assert(exponent_string);
+
+ int exponent = atoi(exponent_string + 1);
+
+ // extract mantissa string: skip sign
+ char* mantissa = buffer[0] == '-' ? buffer + 1 : buffer;
+ assert(mantissa[0] != '0' && mantissa[1] == '.');
+
+ // divide mantissa by 10 to eliminate integer part
+ mantissa[1] = mantissa[0];
+ mantissa++;
+ exponent++;
+
+ // remove extra mantissa digits and zero-terminate mantissa
+ truncate_zeros(mantissa, exponent_string);
+
+ // fill results
+ *out_mantissa = mantissa;
+ *out_exponent = exponent;
+ }
+#endif
+
+ PUGI__FN xpath_string convert_number_to_string(double value, xpath_allocator* alloc)
+ {
+ // try special number conversion
+ const char_t* special = convert_number_to_string_special(value);
+ if (special) return xpath_string::from_const(special);
+
+ // get mantissa + exponent form
+ char mantissa_buffer[32];
+
+ char* mantissa;
+ int exponent;
+ convert_number_to_mantissa_exponent(value, mantissa_buffer, &mantissa, &exponent);
+
+ // allocate a buffer of suitable length for the number
+ size_t result_size = strlen(mantissa_buffer) + (exponent > 0 ? exponent : -exponent) + 4;
+ char_t* result = static_cast<char_t*>(alloc->allocate(sizeof(char_t) * result_size));
+ if (!result) return xpath_string();
+
+ // make the number!
+ char_t* s = result;
+
+ // sign
+ if (value < 0) *s++ = '-';
+
+ // integer part
+ if (exponent <= 0)
+ {
+ *s++ = '0';
+ }
+ else
+ {
+ while (exponent > 0)
+ {
+ assert(*mantissa == 0 || static_cast<unsigned int>(*mantissa - '0') <= 9);
+ *s++ = *mantissa ? *mantissa++ : '0';
+ exponent--;
+ }
+ }
+
+ // fractional part
+ if (*mantissa)
+ {
+ // decimal point
+ *s++ = '.';
+
+ // extra zeroes from negative exponent
+ while (exponent < 0)
+ {
+ *s++ = '0';
+ exponent++;
+ }
+
+ // extra mantissa digits
+ while (*mantissa)
+ {
+ assert(static_cast<unsigned int>(*mantissa - '0') <= 9);
+ *s++ = *mantissa++;
+ }
+ }
+
+ // zero-terminate
+ assert(s < result + result_size);
+ *s = 0;
+
+ return xpath_string::from_heap_preallocated(result, s);
+ }
+
+ PUGI__FN bool check_string_to_number_format(const char_t* string)
+ {
+ // parse leading whitespace
+ while (PUGI__IS_CHARTYPE(*string, ct_space)) ++string;
+
+ // parse sign
+ if (*string == '-') ++string;
+
+ if (!*string) return false;
+
+ // if there is no integer part, there should be a decimal part with at least one digit
+ if (!PUGI__IS_CHARTYPEX(string[0], ctx_digit) && (string[0] != '.' || !PUGI__IS_CHARTYPEX(string[1], ctx_digit))) return false;
+
+ // parse integer part
+ while (PUGI__IS_CHARTYPEX(*string, ctx_digit)) ++string;
+
+ // parse decimal part
+ if (*string == '.')
+ {
+ ++string;
+
+ while (PUGI__IS_CHARTYPEX(*string, ctx_digit)) ++string;
+ }
+
+ // parse trailing whitespace
+ while (PUGI__IS_CHARTYPE(*string, ct_space)) ++string;
+
+ return *string == 0;
+ }
+
+ PUGI__FN double convert_string_to_number(const char_t* string)
+ {
+ // check string format
+ if (!check_string_to_number_format(string)) return gen_nan();
+
+ // parse string
+ #ifdef PUGIXML_WCHAR_MODE
+ return wcstod(string, 0);
+ #else
+ return strtod(string, 0);
+ #endif
+ }
+
+ PUGI__FN bool convert_string_to_number_scratch(char_t (&buffer)[32], const char_t* begin, const char_t* end, double* out_result)
+ {
+ size_t length = static_cast<size_t>(end - begin);
+ char_t* scratch = buffer;
+
+ if (length >= sizeof(buffer) / sizeof(buffer[0]))
+ {
+ // need to make dummy on-heap copy
+ scratch = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!scratch) return false;
+ }
+
+ // copy string to zero-terminated buffer and perform conversion
+ memcpy(scratch, begin, length * sizeof(char_t));
+ scratch[length] = 0;
+
+ *out_result = convert_string_to_number(scratch);
+
+ // free dummy buffer
+ if (scratch != buffer) xml_memory::deallocate(scratch);
+
+ return true;
+ }
+
+ PUGI__FN double round_nearest(double value)
+ {
+ return floor(value + 0.5);
+ }
+
+ PUGI__FN double round_nearest_nzero(double value)
+ {
+ // same as round_nearest, but returns -0 for [-0.5, -0]
+ // ceil is used to differentiate between +0 and -0 (we return -0 for [-0.5, -0] and +0 for +0)
+ return (value >= -0.5 && value <= 0) ? ceil(value) : floor(value + 0.5);
+ }
+
+ PUGI__FN const char_t* qualified_name(const xpath_node& node)
+ {
+ return node.attribute() ? node.attribute().name() : node.node().name();
+ }
+
+ PUGI__FN const char_t* local_name(const xpath_node& node)
+ {
+ const char_t* name = qualified_name(node);
+ const char_t* p = find_char(name, ':');
+
+ return p ? p + 1 : name;
+ }
+
+ struct namespace_uri_predicate
+ {
+ const char_t* prefix;
+ size_t prefix_length;
+
+ namespace_uri_predicate(const char_t* name)
+ {
+ const char_t* pos = find_char(name, ':');
+
+ prefix = pos ? name : 0;
+ prefix_length = pos ? static_cast<size_t>(pos - name) : 0;
+ }
+
+ bool operator()(xml_attribute a) const
+ {
+ const char_t* name = a.name();
+
+ if (!starts_with(name, PUGIXML_TEXT("xmlns"))) return false;
+
+ return prefix ? name[5] == ':' && strequalrange(name + 6, prefix, prefix_length) : name[5] == 0;
+ }
+ };
+
+ PUGI__FN const char_t* namespace_uri(xml_node node)
+ {
+ namespace_uri_predicate pred = node.name();
+
+ xml_node p = node;
+
+ while (p)
+ {
+ xml_attribute a = p.find_attribute(pred);
+
+ if (a) return a.value();
+
+ p = p.parent();
+ }
+
+ return PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const char_t* namespace_uri(xml_attribute attr, xml_node parent)
+ {
+ namespace_uri_predicate pred = attr.name();
+
+ // Default namespace does not apply to attributes
+ if (!pred.prefix) return PUGIXML_TEXT("");
+
+ xml_node p = parent;
+
+ while (p)
+ {
+ xml_attribute a = p.find_attribute(pred);
+
+ if (a) return a.value();
+
+ p = p.parent();
+ }
+
+ return PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const char_t* namespace_uri(const xpath_node& node)
+ {
+ return node.attribute() ? namespace_uri(node.attribute(), node.parent()) : namespace_uri(node.node());
+ }
+
+ PUGI__FN char_t* normalize_space(char_t* buffer)
+ {
+ char_t* write = buffer;
+
+ for (char_t* it = buffer; *it; )
+ {
+ char_t ch = *it++;
+
+ if (PUGI__IS_CHARTYPE(ch, ct_space))
+ {
+ // replace whitespace sequence with single space
+ while (PUGI__IS_CHARTYPE(*it, ct_space)) it++;
+
+ // avoid leading spaces
+ if (write != buffer) *write++ = ' ';
+ }
+ else *write++ = ch;
+ }
+
+ // remove trailing space
+ if (write != buffer && PUGI__IS_CHARTYPE(write[-1], ct_space)) write--;
+
+ // zero-terminate
+ *write = 0;
+
+ return write;
+ }
+
+ PUGI__FN char_t* translate(char_t* buffer, const char_t* from, const char_t* to, size_t to_length)
+ {
+ char_t* write = buffer;
+
+ while (*buffer)
+ {
+ PUGI__DMC_VOLATILE char_t ch = *buffer++;
+
+ const char_t* pos = find_char(from, ch);
+
+ if (!pos)
+ *write++ = ch; // do not process
+ else if (static_cast<size_t>(pos - from) < to_length)
+ *write++ = to[pos - from]; // replace
+ }
+
+ // zero-terminate
+ *write = 0;
+
+ return write;
+ }
+
+ PUGI__FN unsigned char* translate_table_generate(xpath_allocator* alloc, const char_t* from, const char_t* to)
+ {
+ unsigned char table[128] = {0};
+
+ while (*from)
+ {
+ unsigned int fc = static_cast<unsigned int>(*from);
+ unsigned int tc = static_cast<unsigned int>(*to);
+
+ if (fc >= 128 || tc >= 128)
+ return 0;
+
+ // code=128 means "skip character"
+ if (!table[fc])
+ table[fc] = static_cast<unsigned char>(tc ? tc : 128);
+
+ from++;
+ if (tc) to++;
+ }
+
+ for (int i = 0; i < 128; ++i)
+ if (!table[i])
+ table[i] = static_cast<unsigned char>(i);
+
+ void* result = alloc->allocate(sizeof(table));
+ if (!result) return 0;
+
+ memcpy(result, table, sizeof(table));
+
+ return static_cast<unsigned char*>(result);
+ }
+
+ PUGI__FN char_t* translate_table(char_t* buffer, const unsigned char* table)
+ {
+ char_t* write = buffer;
+
+ while (*buffer)
+ {
+ char_t ch = *buffer++;
+ unsigned int index = static_cast<unsigned int>(ch);
+
+ if (index < 128)
+ {
+ unsigned char code = table[index];
+
+ // code=128 means "skip character" (table size is 128 so 128 can be a special value)
+ // this code skips these characters without extra branches
+ *write = static_cast<char_t>(code);
+ write += 1 - (code >> 7);
+ }
+ else
+ {
+ *write++ = ch;
+ }
+ }
+
+ // zero-terminate
+ *write = 0;
+
+ return write;
+ }
+
+ inline bool is_xpath_attribute(const char_t* name)
+ {
+ return !(starts_with(name, PUGIXML_TEXT("xmlns")) && (name[5] == 0 || name[5] == ':'));
+ }
+
+ struct xpath_variable_boolean: xpath_variable
+ {
+ xpath_variable_boolean(): xpath_variable(xpath_type_boolean), value(false)
+ {
+ }
+
+ bool value;
+ char_t name[1];
+ };
+
+ struct xpath_variable_number: xpath_variable
+ {
+ xpath_variable_number(): xpath_variable(xpath_type_number), value(0)
+ {
+ }
+
+ double value;
+ char_t name[1];
+ };
+
+ struct xpath_variable_string: xpath_variable
+ {
+ xpath_variable_string(): xpath_variable(xpath_type_string), value(0)
+ {
+ }
+
+ ~xpath_variable_string()
+ {
+ if (value) xml_memory::deallocate(value);
+ }
+
+ char_t* value;
+ char_t name[1];
+ };
+
+ struct xpath_variable_node_set: xpath_variable
+ {
+ xpath_variable_node_set(): xpath_variable(xpath_type_node_set)
+ {
+ }
+
+ xpath_node_set value;
+ char_t name[1];
+ };
+
+ static const xpath_node_set dummy_node_set;
+
+ PUGI__FN PUGI__UNSIGNED_OVERFLOW unsigned int hash_string(const char_t* str)
+ {
+ // Jenkins one-at-a-time hash (http://en.wikipedia.org/wiki/Jenkins_hash_function#one-at-a-time)
+ unsigned int result = 0;
+
+ while (*str)
+ {
+ result += static_cast<unsigned int>(*str++);
+ result += result << 10;
+ result ^= result >> 6;
+ }
+
+ result += result << 3;
+ result ^= result >> 11;
+ result += result << 15;
+
+ return result;
+ }
+
+ template <typename T> PUGI__FN T* new_xpath_variable(const char_t* name)
+ {
+ size_t length = strlength(name);
+ if (length == 0) return 0; // empty variable names are invalid
+
+ // $$ we can't use offsetof(T, name) because T is non-POD, so we just allocate additional length characters
+ void* memory = xml_memory::allocate(sizeof(T) + length * sizeof(char_t));
+ if (!memory) return 0;
+
+ T* result = new (memory) T();
+
+ memcpy(result->name, name, (length + 1) * sizeof(char_t));
+
+ return result;
+ }
+
+ PUGI__FN xpath_variable* new_xpath_variable(xpath_value_type type, const char_t* name)
+ {
+ switch (type)
+ {
+ case xpath_type_node_set:
+ return new_xpath_variable<xpath_variable_node_set>(name);
+
+ case xpath_type_number:
+ return new_xpath_variable<xpath_variable_number>(name);
+
+ case xpath_type_string:
+ return new_xpath_variable<xpath_variable_string>(name);
+
+ case xpath_type_boolean:
+ return new_xpath_variable<xpath_variable_boolean>(name);
+
+ default:
+ return 0;
+ }
+ }
+
+ template <typename T> PUGI__FN void delete_xpath_variable(T* var)
+ {
+ var->~T();
+ xml_memory::deallocate(var);
+ }
+
+ PUGI__FN void delete_xpath_variable(xpath_value_type type, xpath_variable* var)
+ {
+ switch (type)
+ {
+ case xpath_type_node_set:
+ delete_xpath_variable(static_cast<xpath_variable_node_set*>(var));
+ break;
+
+ case xpath_type_number:
+ delete_xpath_variable(static_cast<xpath_variable_number*>(var));
+ break;
+
+ case xpath_type_string:
+ delete_xpath_variable(static_cast<xpath_variable_string*>(var));
+ break;
+
+ case xpath_type_boolean:
+ delete_xpath_variable(static_cast<xpath_variable_boolean*>(var));
+ break;
+
+ default:
+ assert(false && "Invalid variable type"); // unreachable
+ }
+ }
+
+ PUGI__FN bool copy_xpath_variable(xpath_variable* lhs, const xpath_variable* rhs)
+ {
+ switch (rhs->type())
+ {
+ case xpath_type_node_set:
+ return lhs->set(static_cast<const xpath_variable_node_set*>(rhs)->value);
+
+ case xpath_type_number:
+ return lhs->set(static_cast<const xpath_variable_number*>(rhs)->value);
+
+ case xpath_type_string:
+ return lhs->set(static_cast<const xpath_variable_string*>(rhs)->value);
+
+ case xpath_type_boolean:
+ return lhs->set(static_cast<const xpath_variable_boolean*>(rhs)->value);
+
+ default:
+ assert(false && "Invalid variable type"); // unreachable
+ return false;
+ }
+ }
+
+ PUGI__FN bool get_variable_scratch(char_t (&buffer)[32], xpath_variable_set* set, const char_t* begin, const char_t* end, xpath_variable** out_result)
+ {
+ size_t length = static_cast<size_t>(end - begin);
+ char_t* scratch = buffer;
+
+ if (length >= sizeof(buffer) / sizeof(buffer[0]))
+ {
+ // need to make dummy on-heap copy
+ scratch = static_cast<char_t*>(xml_memory::allocate((length + 1) * sizeof(char_t)));
+ if (!scratch) return false;
+ }
+
+ // copy string to zero-terminated buffer and perform lookup
+ memcpy(scratch, begin, length * sizeof(char_t));
+ scratch[length] = 0;
+
+ *out_result = set->get(scratch);
+
+ // free dummy buffer
+ if (scratch != buffer) xml_memory::deallocate(scratch);
+
+ return true;
+ }
+PUGI__NS_END
+
+// Internal node set class
+PUGI__NS_BEGIN
+ PUGI__FN xpath_node_set::type_t xpath_get_order(const xpath_node* begin, const xpath_node* end)
+ {
+ if (end - begin < 2)
+ return xpath_node_set::type_sorted;
+
+ document_order_comparator cmp;
+
+ bool first = cmp(begin[0], begin[1]);
+
+ for (const xpath_node* it = begin + 1; it + 1 < end; ++it)
+ if (cmp(it[0], it[1]) != first)
+ return xpath_node_set::type_unsorted;
+
+ return first ? xpath_node_set::type_sorted : xpath_node_set::type_sorted_reverse;
+ }
+
+ PUGI__FN xpath_node_set::type_t xpath_sort(xpath_node* begin, xpath_node* end, xpath_node_set::type_t type, bool rev)
+ {
+ xpath_node_set::type_t order = rev ? xpath_node_set::type_sorted_reverse : xpath_node_set::type_sorted;
+
+ if (type == xpath_node_set::type_unsorted)
+ {
+ xpath_node_set::type_t sorted = xpath_get_order(begin, end);
+
+ if (sorted == xpath_node_set::type_unsorted)
+ {
+ sort(begin, end, document_order_comparator());
+
+ type = xpath_node_set::type_sorted;
+ }
+ else
+ type = sorted;
+ }
+
+ if (type != order) reverse(begin, end);
+
+ return order;
+ }
+
+ PUGI__FN xpath_node xpath_first(const xpath_node* begin, const xpath_node* end, xpath_node_set::type_t type)
+ {
+ if (begin == end) return xpath_node();
+
+ switch (type)
+ {
+ case xpath_node_set::type_sorted:
+ return *begin;
+
+ case xpath_node_set::type_sorted_reverse:
+ return *(end - 1);
+
+ case xpath_node_set::type_unsorted:
+ return *min_element(begin, end, document_order_comparator());
+
+ default:
+ assert(false && "Invalid node set type"); // unreachable
+ return xpath_node();
+ }
+ }
+
+ class xpath_node_set_raw
+ {
+ xpath_node_set::type_t _type;
+
+ xpath_node* _begin;
+ xpath_node* _end;
+ xpath_node* _eos;
+
+ public:
+ xpath_node_set_raw(): _type(xpath_node_set::type_unsorted), _begin(0), _end(0), _eos(0)
+ {
+ }
+
+ xpath_node* begin() const
+ {
+ return _begin;
+ }
+
+ xpath_node* end() const
+ {
+ return _end;
+ }
+
+ bool empty() const
+ {
+ return _begin == _end;
+ }
+
+ size_t size() const
+ {
+ return static_cast<size_t>(_end - _begin);
+ }
+
+ xpath_node first() const
+ {
+ return xpath_first(_begin, _end, _type);
+ }
+
+ void push_back_grow(const xpath_node& node, xpath_allocator* alloc);
+
+ void push_back(const xpath_node& node, xpath_allocator* alloc)
+ {
+ if (_end != _eos)
+ *_end++ = node;
+ else
+ push_back_grow(node, alloc);
+ }
+
+ void append(const xpath_node* begin_, const xpath_node* end_, xpath_allocator* alloc)
+ {
+ if (begin_ == end_) return;
+
+ size_t size_ = static_cast<size_t>(_end - _begin);
+ size_t capacity = static_cast<size_t>(_eos - _begin);
+ size_t count = static_cast<size_t>(end_ - begin_);
+
+ if (size_ + count > capacity)
+ {
+ // reallocate the old array or allocate a new one
+ xpath_node* data = static_cast<xpath_node*>(alloc->reallocate(_begin, capacity * sizeof(xpath_node), (size_ + count) * sizeof(xpath_node)));
+ if (!data) return;
+
+ // finalize
+ _begin = data;
+ _end = data + size_;
+ _eos = data + size_ + count;
+ }
+
+ memcpy(_end, begin_, count * sizeof(xpath_node));
+ _end += count;
+ }
+
+ void sort_do()
+ {
+ _type = xpath_sort(_begin, _end, _type, false);
+ }
+
+ void truncate(xpath_node* pos)
+ {
+ assert(_begin <= pos && pos <= _end);
+
+ _end = pos;
+ }
+
+ void remove_duplicates(xpath_allocator* alloc)
+ {
+ if (_type == xpath_node_set::type_unsorted && _end - _begin > 2)
+ {
+ xpath_allocator_capture cr(alloc);
+
+ size_t size_ = static_cast<size_t>(_end - _begin);
+
+ size_t hash_size = 1;
+ while (hash_size < size_ + size_ / 2) hash_size *= 2;
+
+ const void** hash_data = static_cast<const void**>(alloc->allocate(hash_size * sizeof(void**)));
+ if (!hash_data) return;
+
+ memset(hash_data, 0, hash_size * sizeof(const void**));
+
+ xpath_node* write = _begin;
+
+ for (xpath_node* it = _begin; it != _end; ++it)
+ {
+ const void* attr = it->attribute().internal_object();
+ const void* node = it->node().internal_object();
+ const void* key = attr ? attr : node;
+
+ if (key && hash_insert(hash_data, hash_size, key))
+ {
+ *write++ = *it;
+ }
+ }
+
+ _end = write;
+ }
+ else
+ {
+ _end = unique(_begin, _end);
+ }
+ }
+
+ xpath_node_set::type_t type() const
+ {
+ return _type;
+ }
+
+ void set_type(xpath_node_set::type_t value)
+ {
+ _type = value;
+ }
+ };
+
+ PUGI__FN_NO_INLINE void xpath_node_set_raw::push_back_grow(const xpath_node& node, xpath_allocator* alloc)
+ {
+ size_t capacity = static_cast<size_t>(_eos - _begin);
+
+ // get new capacity (1.5x rule)
+ size_t new_capacity = capacity + capacity / 2 + 1;
+
+ // reallocate the old array or allocate a new one
+ xpath_node* data = static_cast<xpath_node*>(alloc->reallocate(_begin, capacity * sizeof(xpath_node), new_capacity * sizeof(xpath_node)));
+ if (!data) return;
+
+ // finalize
+ _begin = data;
+ _end = data + capacity;
+ _eos = data + new_capacity;
+
+ // push
+ *_end++ = node;
+ }
+PUGI__NS_END
+
+PUGI__NS_BEGIN
+ struct xpath_context
+ {
+ xpath_node n;
+ size_t position, size;
+
+ xpath_context(const xpath_node& n_, size_t position_, size_t size_): n(n_), position(position_), size(size_)
+ {
+ }
+ };
+
+ enum lexeme_t
+ {
+ lex_none = 0,
+ lex_equal,
+ lex_not_equal,
+ lex_less,
+ lex_greater,
+ lex_less_or_equal,
+ lex_greater_or_equal,
+ lex_plus,
+ lex_minus,
+ lex_multiply,
+ lex_union,
+ lex_var_ref,
+ lex_open_brace,
+ lex_close_brace,
+ lex_quoted_string,
+ lex_number,
+ lex_slash,
+ lex_double_slash,
+ lex_open_square_brace,
+ lex_close_square_brace,
+ lex_string,
+ lex_comma,
+ lex_axis_attribute,
+ lex_dot,
+ lex_double_dot,
+ lex_double_colon,
+ lex_eof
+ };
+
+ struct xpath_lexer_string
+ {
+ const char_t* begin;
+ const char_t* end;
+
+ xpath_lexer_string(): begin(0), end(0)
+ {
+ }
+
+ bool operator==(const char_t* other) const
+ {
+ size_t length = static_cast<size_t>(end - begin);
+
+ return strequalrange(other, begin, length);
+ }
+ };
+
+ class xpath_lexer
+ {
+ const char_t* _cur;
+ const char_t* _cur_lexeme_pos;
+ xpath_lexer_string _cur_lexeme_contents;
+
+ lexeme_t _cur_lexeme;
+
+ public:
+ explicit xpath_lexer(const char_t* query): _cur(query)
+ {
+ next();
+ }
+
+ const char_t* state() const
+ {
+ return _cur;
+ }
+
+ void next()
+ {
+ const char_t* cur = _cur;
+
+ while (PUGI__IS_CHARTYPE(*cur, ct_space)) ++cur;
+
+ // save lexeme position for error reporting
+ _cur_lexeme_pos = cur;
+
+ switch (*cur)
+ {
+ case 0:
+ _cur_lexeme = lex_eof;
+ break;
+
+ case '>':
+ if (*(cur+1) == '=')
+ {
+ cur += 2;
+ _cur_lexeme = lex_greater_or_equal;
+ }
+ else
+ {
+ cur += 1;
+ _cur_lexeme = lex_greater;
+ }
+ break;
+
+ case '<':
+ if (*(cur+1) == '=')
+ {
+ cur += 2;
+ _cur_lexeme = lex_less_or_equal;
+ }
+ else
+ {
+ cur += 1;
+ _cur_lexeme = lex_less;
+ }
+ break;
+
+ case '!':
+ if (*(cur+1) == '=')
+ {
+ cur += 2;
+ _cur_lexeme = lex_not_equal;
+ }
+ else
+ {
+ _cur_lexeme = lex_none;
+ }
+ break;
+
+ case '=':
+ cur += 1;
+ _cur_lexeme = lex_equal;
+
+ break;
+
+ case '+':
+ cur += 1;
+ _cur_lexeme = lex_plus;
+
+ break;
+
+ case '-':
+ cur += 1;
+ _cur_lexeme = lex_minus;
+
+ break;
+
+ case '*':
+ cur += 1;
+ _cur_lexeme = lex_multiply;
+
+ break;
+
+ case '|':
+ cur += 1;
+ _cur_lexeme = lex_union;
+
+ break;
+
+ case '$':
+ cur += 1;
+
+ if (PUGI__IS_CHARTYPEX(*cur, ctx_start_symbol))
+ {
+ _cur_lexeme_contents.begin = cur;
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
+
+ if (cur[0] == ':' && PUGI__IS_CHARTYPEX(cur[1], ctx_symbol)) // qname
+ {
+ cur++; // :
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
+ }
+
+ _cur_lexeme_contents.end = cur;
+
+ _cur_lexeme = lex_var_ref;
+ }
+ else
+ {
+ _cur_lexeme = lex_none;
+ }
+
+ break;
+
+ case '(':
+ cur += 1;
+ _cur_lexeme = lex_open_brace;
+
+ break;
+
+ case ')':
+ cur += 1;
+ _cur_lexeme = lex_close_brace;
+
+ break;
+
+ case '[':
+ cur += 1;
+ _cur_lexeme = lex_open_square_brace;
+
+ break;
+
+ case ']':
+ cur += 1;
+ _cur_lexeme = lex_close_square_brace;
+
+ break;
+
+ case ',':
+ cur += 1;
+ _cur_lexeme = lex_comma;
+
+ break;
+
+ case '/':
+ if (*(cur+1) == '/')
+ {
+ cur += 2;
+ _cur_lexeme = lex_double_slash;
+ }
+ else
+ {
+ cur += 1;
+ _cur_lexeme = lex_slash;
+ }
+ break;
+
+ case '.':
+ if (*(cur+1) == '.')
+ {
+ cur += 2;
+ _cur_lexeme = lex_double_dot;
+ }
+ else if (PUGI__IS_CHARTYPEX(*(cur+1), ctx_digit))
+ {
+ _cur_lexeme_contents.begin = cur; // .
+
+ ++cur;
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;
+
+ _cur_lexeme_contents.end = cur;
+
+ _cur_lexeme = lex_number;
+ }
+ else
+ {
+ cur += 1;
+ _cur_lexeme = lex_dot;
+ }
+ break;
+
+ case '@':
+ cur += 1;
+ _cur_lexeme = lex_axis_attribute;
+
+ break;
+
+ case '"':
+ case '\'':
+ {
+ char_t terminator = *cur;
+
+ ++cur;
+
+ _cur_lexeme_contents.begin = cur;
+ while (*cur && *cur != terminator) cur++;
+ _cur_lexeme_contents.end = cur;
+
+ if (!*cur)
+ _cur_lexeme = lex_none;
+ else
+ {
+ cur += 1;
+ _cur_lexeme = lex_quoted_string;
+ }
+
+ break;
+ }
+
+ case ':':
+ if (*(cur+1) == ':')
+ {
+ cur += 2;
+ _cur_lexeme = lex_double_colon;
+ }
+ else
+ {
+ _cur_lexeme = lex_none;
+ }
+ break;
+
+ default:
+ if (PUGI__IS_CHARTYPEX(*cur, ctx_digit))
+ {
+ _cur_lexeme_contents.begin = cur;
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;
+
+ if (*cur == '.')
+ {
+ cur++;
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_digit)) cur++;
+ }
+
+ _cur_lexeme_contents.end = cur;
+
+ _cur_lexeme = lex_number;
+ }
+ else if (PUGI__IS_CHARTYPEX(*cur, ctx_start_symbol))
+ {
+ _cur_lexeme_contents.begin = cur;
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
+
+ if (cur[0] == ':')
+ {
+ if (cur[1] == '*') // namespace test ncname:*
+ {
+ cur += 2; // :*
+ }
+ else if (PUGI__IS_CHARTYPEX(cur[1], ctx_symbol)) // namespace test qname
+ {
+ cur++; // :
+
+ while (PUGI__IS_CHARTYPEX(*cur, ctx_symbol)) cur++;
+ }
+ }
+
+ _cur_lexeme_contents.end = cur;
+
+ _cur_lexeme = lex_string;
+ }
+ else
+ {
+ _cur_lexeme = lex_none;
+ }
+ }
+
+ _cur = cur;
+ }
+
+ lexeme_t current() const
+ {
+ return _cur_lexeme;
+ }
+
+ const char_t* current_pos() const
+ {
+ return _cur_lexeme_pos;
+ }
+
+ const xpath_lexer_string& contents() const
+ {
+ assert(_cur_lexeme == lex_var_ref || _cur_lexeme == lex_number || _cur_lexeme == lex_string || _cur_lexeme == lex_quoted_string);
+
+ return _cur_lexeme_contents;
+ }
+ };
+
+ enum ast_type_t
+ {
+ ast_unknown,
+ ast_op_or, // left or right
+ ast_op_and, // left and right
+ ast_op_equal, // left = right
+ ast_op_not_equal, // left != right
+ ast_op_less, // left < right
+ ast_op_greater, // left > right
+ ast_op_less_or_equal, // left <= right
+ ast_op_greater_or_equal, // left >= right
+ ast_op_add, // left + right
+ ast_op_subtract, // left - right
+ ast_op_multiply, // left * right
+ ast_op_divide, // left / right
+ ast_op_mod, // left % right
+ ast_op_negate, // left - right
+ ast_op_union, // left | right
+ ast_predicate, // apply predicate to set; next points to next predicate
+ ast_filter, // select * from left where right
+ ast_string_constant, // string constant
+ ast_number_constant, // number constant
+ ast_variable, // variable
+ ast_func_last, // last()
+ ast_func_position, // position()
+ ast_func_count, // count(left)
+ ast_func_id, // id(left)
+ ast_func_local_name_0, // local-name()
+ ast_func_local_name_1, // local-name(left)
+ ast_func_namespace_uri_0, // namespace-uri()
+ ast_func_namespace_uri_1, // namespace-uri(left)
+ ast_func_name_0, // name()
+ ast_func_name_1, // name(left)
+ ast_func_string_0, // string()
+ ast_func_string_1, // string(left)
+ ast_func_concat, // concat(left, right, siblings)
+ ast_func_starts_with, // starts_with(left, right)
+ ast_func_contains, // contains(left, right)
+ ast_func_substring_before, // substring-before(left, right)
+ ast_func_substring_after, // substring-after(left, right)
+ ast_func_substring_2, // substring(left, right)
+ ast_func_substring_3, // substring(left, right, third)
+ ast_func_string_length_0, // string-length()
+ ast_func_string_length_1, // string-length(left)
+ ast_func_normalize_space_0, // normalize-space()
+ ast_func_normalize_space_1, // normalize-space(left)
+ ast_func_translate, // translate(left, right, third)
+ ast_func_boolean, // boolean(left)
+ ast_func_not, // not(left)
+ ast_func_true, // true()
+ ast_func_false, // false()
+ ast_func_lang, // lang(left)
+ ast_func_number_0, // number()
+ ast_func_number_1, // number(left)
+ ast_func_sum, // sum(left)
+ ast_func_floor, // floor(left)
+ ast_func_ceiling, // ceiling(left)
+ ast_func_round, // round(left)
+ ast_step, // process set left with step
+ ast_step_root, // select root node
+
+ ast_opt_translate_table, // translate(left, right, third) where right/third are constants
+ ast_opt_compare_attribute // @name = 'string'
+ };
+
+ enum axis_t
+ {
+ axis_ancestor,
+ axis_ancestor_or_self,
+ axis_attribute,
+ axis_child,
+ axis_descendant,
+ axis_descendant_or_self,
+ axis_following,
+ axis_following_sibling,
+ axis_namespace,
+ axis_parent,
+ axis_preceding,
+ axis_preceding_sibling,
+ axis_self
+ };
+
+ enum nodetest_t
+ {
+ nodetest_none,
+ nodetest_name,
+ nodetest_type_node,
+ nodetest_type_comment,
+ nodetest_type_pi,
+ nodetest_type_text,
+ nodetest_pi,
+ nodetest_all,
+ nodetest_all_in_namespace
+ };
+
+ enum predicate_t
+ {
+ predicate_default,
+ predicate_posinv,
+ predicate_constant,
+ predicate_constant_one
+ };
+
+ enum nodeset_eval_t
+ {
+ nodeset_eval_all,
+ nodeset_eval_any,
+ nodeset_eval_first
+ };
+
+ template <axis_t N> struct axis_to_type
+ {
+ static const axis_t axis;
+ };
+
+ template <axis_t N> const axis_t axis_to_type<N>::axis = N;
+
+ class xpath_ast_node
+ {
+ private:
+ // node type
+ char _type;
+ char _rettype;
+
+ // for ast_step
+ char _axis;
+
+ // for ast_step/ast_predicate/ast_filter
+ char _test;
+
+ // tree node structure
+ xpath_ast_node* _left;
+ xpath_ast_node* _right;
+ xpath_ast_node* _next;
+
+ union
+ {
+ // value for ast_string_constant
+ const char_t* string;
+ // value for ast_number_constant
+ double number;
+ // variable for ast_variable
+ xpath_variable* variable;
+ // node test for ast_step (node name/namespace/node type/pi target)
+ const char_t* nodetest;
+ // table for ast_opt_translate_table
+ const unsigned char* table;
+ } _data;
+
+ xpath_ast_node(const xpath_ast_node&);
+ xpath_ast_node& operator=(const xpath_ast_node&);
+
+ template <class Comp> static bool compare_eq(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const xpath_stack& stack, const Comp& comp)
+ {
+ xpath_value_type lt = lhs->rettype(), rt = rhs->rettype();
+
+ if (lt != xpath_type_node_set && rt != xpath_type_node_set)
+ {
+ if (lt == xpath_type_boolean || rt == xpath_type_boolean)
+ return comp(lhs->eval_boolean(c, stack), rhs->eval_boolean(c, stack));
+ else if (lt == xpath_type_number || rt == xpath_type_number)
+ return comp(lhs->eval_number(c, stack), rhs->eval_number(c, stack));
+ else if (lt == xpath_type_string || rt == xpath_type_string)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_string ls = lhs->eval_string(c, stack);
+ xpath_string rs = rhs->eval_string(c, stack);
+
+ return comp(ls, rs);
+ }
+ }
+ else if (lt == xpath_type_node_set && rt == xpath_type_node_set)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
+ xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
+ for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ if (comp(string_value(*li, stack.result), string_value(*ri, stack.result)))
+ return true;
+ }
+
+ return false;
+ }
+ else
+ {
+ if (lt == xpath_type_node_set)
+ {
+ swap(lhs, rhs);
+ swap(lt, rt);
+ }
+
+ if (lt == xpath_type_boolean)
+ return comp(lhs->eval_boolean(c, stack), rhs->eval_boolean(c, stack));
+ else if (lt == xpath_type_number)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ double l = lhs->eval_number(c, stack);
+ xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
+ return true;
+ }
+
+ return false;
+ }
+ else if (lt == xpath_type_string)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_string l = lhs->eval_string(c, stack);
+ xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ if (comp(l, string_value(*ri, stack.result)))
+ return true;
+ }
+
+ return false;
+ }
+ }
+
+ assert(false && "Wrong types"); // unreachable
+ return false;
+ }
+
+ static bool eval_once(xpath_node_set::type_t type, nodeset_eval_t eval)
+ {
+ return type == xpath_node_set::type_sorted ? eval != nodeset_eval_all : eval == nodeset_eval_any;
+ }
+
+ template <class Comp> static bool compare_rel(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const xpath_stack& stack, const Comp& comp)
+ {
+ xpath_value_type lt = lhs->rettype(), rt = rhs->rettype();
+
+ if (lt != xpath_type_node_set && rt != xpath_type_node_set)
+ return comp(lhs->eval_number(c, stack), rhs->eval_number(c, stack));
+ else if (lt == xpath_type_node_set && rt == xpath_type_node_set)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
+ xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ double l = convert_string_to_number(string_value(*li, stack.result).c_str());
+
+ for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
+ {
+ xpath_allocator_capture crii(stack.result);
+
+ if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
+ return true;
+ }
+ }
+
+ return false;
+ }
+ else if (lt != xpath_type_node_set && rt == xpath_type_node_set)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ double l = lhs->eval_number(c, stack);
+ xpath_node_set_raw rs = rhs->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* ri = rs.begin(); ri != rs.end(); ++ri)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ if (comp(l, convert_string_to_number(string_value(*ri, stack.result).c_str())))
+ return true;
+ }
+
+ return false;
+ }
+ else if (lt == xpath_type_node_set && rt != xpath_type_node_set)
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ls = lhs->eval_node_set(c, stack, nodeset_eval_all);
+ double r = rhs->eval_number(c, stack);
+
+ for (const xpath_node* li = ls.begin(); li != ls.end(); ++li)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ if (comp(convert_string_to_number(string_value(*li, stack.result).c_str()), r))
+ return true;
+ }
+
+ return false;
+ }
+ else
+ {
+ assert(false && "Wrong types"); // unreachable
+ return false;
+ }
+ }
+
+ static void apply_predicate_boolean(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack, bool once)
+ {
+ assert(ns.size() >= first);
+ assert(expr->rettype() != xpath_type_number);
+
+ size_t i = 1;
+ size_t size = ns.size() - first;
+
+ xpath_node* last = ns.begin() + first;
+
+ // remove_if... or well, sort of
+ for (xpath_node* it = last; it != ns.end(); ++it, ++i)
+ {
+ xpath_context c(*it, i, size);
+
+ if (expr->eval_boolean(c, stack))
+ {
+ *last++ = *it;
+
+ if (once) break;
+ }
+ }
+
+ ns.truncate(last);
+ }
+
+ static void apply_predicate_number(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack, bool once)
+ {
+ assert(ns.size() >= first);
+ assert(expr->rettype() == xpath_type_number);
+
+ size_t i = 1;
+ size_t size = ns.size() - first;
+
+ xpath_node* last = ns.begin() + first;
+
+ // remove_if... or well, sort of
+ for (xpath_node* it = last; it != ns.end(); ++it, ++i)
+ {
+ xpath_context c(*it, i, size);
+
+ if (expr->eval_number(c, stack) == static_cast<double>(i))
+ {
+ *last++ = *it;
+
+ if (once) break;
+ }
+ }
+
+ ns.truncate(last);
+ }
+
+ static void apply_predicate_number_const(xpath_node_set_raw& ns, size_t first, xpath_ast_node* expr, const xpath_stack& stack)
+ {
+ assert(ns.size() >= first);
+ assert(expr->rettype() == xpath_type_number);
+
+ size_t size = ns.size() - first;
+
+ xpath_node* last = ns.begin() + first;
+
+ xpath_context c(xpath_node(), 1, size);
+
+ double er = expr->eval_number(c, stack);
+
+ if (er >= 1.0 && er <= static_cast<double>(size))
+ {
+ size_t eri = static_cast<size_t>(er);
+
+ if (er == static_cast<double>(eri))
+ {
+ xpath_node r = last[eri - 1];
+
+ *last++ = r;
+ }
+ }
+
+ ns.truncate(last);
+ }
+
+ void apply_predicate(xpath_node_set_raw& ns, size_t first, const xpath_stack& stack, bool once)
+ {
+ if (ns.size() == first) return;
+
+ assert(_type == ast_filter || _type == ast_predicate);
+
+ if (_test == predicate_constant || _test == predicate_constant_one)
+ apply_predicate_number_const(ns, first, _right, stack);
+ else if (_right->rettype() == xpath_type_number)
+ apply_predicate_number(ns, first, _right, stack, once);
+ else
+ apply_predicate_boolean(ns, first, _right, stack, once);
+ }
+
+ void apply_predicates(xpath_node_set_raw& ns, size_t first, const xpath_stack& stack, nodeset_eval_t eval)
+ {
+ if (ns.size() == first) return;
+
+ bool last_once = eval_once(ns.type(), eval);
+
+ for (xpath_ast_node* pred = _right; pred; pred = pred->_next)
+ pred->apply_predicate(ns, first, stack, !pred->_next && last_once);
+ }
+
+ bool step_push(xpath_node_set_raw& ns, xml_attribute_struct* a, xml_node_struct* parent, xpath_allocator* alloc)
+ {
+ assert(a);
+
+ const char_t* name = a->name ? a->name + 0 : PUGIXML_TEXT("");
+
+ switch (_test)
+ {
+ case nodetest_name:
+ if (strequal(name, _data.nodetest) && is_xpath_attribute(name))
+ {
+ ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_type_node:
+ case nodetest_all:
+ if (is_xpath_attribute(name))
+ {
+ ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_all_in_namespace:
+ if (starts_with(name, _data.nodetest) && is_xpath_attribute(name))
+ {
+ ns.push_back(xpath_node(xml_attribute(a), xml_node(parent)), alloc);
+ return true;
+ }
+ break;
+
+ default:
+ ;
+ }
+
+ return false;
+ }
+
+ bool step_push(xpath_node_set_raw& ns, xml_node_struct* n, xpath_allocator* alloc)
+ {
+ assert(n);
+
+ xml_node_type type = PUGI__NODETYPE(n);
+
+ switch (_test)
+ {
+ case nodetest_name:
+ if (type == node_element && n->name && strequal(n->name, _data.nodetest))
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_type_node:
+ ns.push_back(xml_node(n), alloc);
+ return true;
+
+ case nodetest_type_comment:
+ if (type == node_comment)
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_type_text:
+ if (type == node_pcdata || type == node_cdata)
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_type_pi:
+ if (type == node_pi)
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_pi:
+ if (type == node_pi && n->name && strequal(n->name, _data.nodetest))
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_all:
+ if (type == node_element)
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ case nodetest_all_in_namespace:
+ if (type == node_element && n->name && starts_with(n->name, _data.nodetest))
+ {
+ ns.push_back(xml_node(n), alloc);
+ return true;
+ }
+ break;
+
+ default:
+ assert(false && "Unknown axis"); // unreachable
+ }
+
+ return false;
+ }
+
+ template <class T> void step_fill(xpath_node_set_raw& ns, xml_node_struct* n, xpath_allocator* alloc, bool once, T)
+ {
+ const axis_t axis = T::axis;
+
+ switch (axis)
+ {
+ case axis_attribute:
+ {
+ for (xml_attribute_struct* a = n->first_attribute; a; a = a->next_attribute)
+ if (step_push(ns, a, n, alloc) & once)
+ return;
+
+ break;
+ }
+
+ case axis_child:
+ {
+ for (xml_node_struct* c = n->first_child; c; c = c->next_sibling)
+ if (step_push(ns, c, alloc) & once)
+ return;
+
+ break;
+ }
+
+ case axis_descendant:
+ case axis_descendant_or_self:
+ {
+ if (axis == axis_descendant_or_self)
+ if (step_push(ns, n, alloc) & once)
+ return;
+
+ xml_node_struct* cur = n->first_child;
+
+ while (cur)
+ {
+ if (step_push(ns, cur, alloc) & once)
+ return;
+
+ if (cur->first_child)
+ cur = cur->first_child;
+ else
+ {
+ while (!cur->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (cur == n) return;
+ }
+
+ cur = cur->next_sibling;
+ }
+ }
+
+ break;
+ }
+
+ case axis_following_sibling:
+ {
+ for (xml_node_struct* c = n->next_sibling; c; c = c->next_sibling)
+ if (step_push(ns, c, alloc) & once)
+ return;
+
+ break;
+ }
+
+ case axis_preceding_sibling:
+ {
+ for (xml_node_struct* c = n->prev_sibling_c; c->next_sibling; c = c->prev_sibling_c)
+ if (step_push(ns, c, alloc) & once)
+ return;
+
+ break;
+ }
+
+ case axis_following:
+ {
+ xml_node_struct* cur = n;
+
+ // exit from this node so that we don't include descendants
+ while (!cur->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (!cur) return;
+ }
+
+ cur = cur->next_sibling;
+
+ while (cur)
+ {
+ if (step_push(ns, cur, alloc) & once)
+ return;
+
+ if (cur->first_child)
+ cur = cur->first_child;
+ else
+ {
+ while (!cur->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (!cur) return;
+ }
+
+ cur = cur->next_sibling;
+ }
+ }
+
+ break;
+ }
+
+ case axis_preceding:
+ {
+ xml_node_struct* cur = n;
+
+ // exit from this node so that we don't include descendants
+ while (!cur->prev_sibling_c->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (!cur) return;
+ }
+
+ cur = cur->prev_sibling_c;
+
+ while (cur)
+ {
+ if (cur->first_child)
+ cur = cur->first_child->prev_sibling_c;
+ else
+ {
+ // leaf node, can't be ancestor
+ if (step_push(ns, cur, alloc) & once)
+ return;
+
+ while (!cur->prev_sibling_c->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (!cur) return;
+
+ if (!node_is_ancestor(cur, n))
+ if (step_push(ns, cur, alloc) & once)
+ return;
+ }
+
+ cur = cur->prev_sibling_c;
+ }
+ }
+
+ break;
+ }
+
+ case axis_ancestor:
+ case axis_ancestor_or_self:
+ {
+ if (axis == axis_ancestor_or_self)
+ if (step_push(ns, n, alloc) & once)
+ return;
+
+ xml_node_struct* cur = n->parent;
+
+ while (cur)
+ {
+ if (step_push(ns, cur, alloc) & once)
+ return;
+
+ cur = cur->parent;
+ }
+
+ break;
+ }
+
+ case axis_self:
+ {
+ step_push(ns, n, alloc);
+
+ break;
+ }
+
+ case axis_parent:
+ {
+ if (n->parent)
+ step_push(ns, n->parent, alloc);
+
+ break;
+ }
+
+ default:
+ assert(false && "Unimplemented axis"); // unreachable
+ }
+ }
+
+ template <class T> void step_fill(xpath_node_set_raw& ns, xml_attribute_struct* a, xml_node_struct* p, xpath_allocator* alloc, bool once, T v)
+ {
+ const axis_t axis = T::axis;
+
+ switch (axis)
+ {
+ case axis_ancestor:
+ case axis_ancestor_or_self:
+ {
+ if (axis == axis_ancestor_or_self && _test == nodetest_type_node) // reject attributes based on principal node type test
+ if (step_push(ns, a, p, alloc) & once)
+ return;
+
+ xml_node_struct* cur = p;
+
+ while (cur)
+ {
+ if (step_push(ns, cur, alloc) & once)
+ return;
+
+ cur = cur->parent;
+ }
+
+ break;
+ }
+
+ case axis_descendant_or_self:
+ case axis_self:
+ {
+ if (_test == nodetest_type_node) // reject attributes based on principal node type test
+ step_push(ns, a, p, alloc);
+
+ break;
+ }
+
+ case axis_following:
+ {
+ xml_node_struct* cur = p;
+
+ while (cur)
+ {
+ if (cur->first_child)
+ cur = cur->first_child;
+ else
+ {
+ while (!cur->next_sibling)
+ {
+ cur = cur->parent;
+
+ if (!cur) return;
+ }
+
+ cur = cur->next_sibling;
+ }
+
+ if (step_push(ns, cur, alloc) & once)
+ return;
+ }
+
+ break;
+ }
+
+ case axis_parent:
+ {
+ step_push(ns, p, alloc);
+
+ break;
+ }
+
+ case axis_preceding:
+ {
+ // preceding:: axis does not include attribute nodes and attribute ancestors (they are the same as parent's ancestors), so we can reuse node preceding
+ step_fill(ns, p, alloc, once, v);
+ break;
+ }
+
+ default:
+ assert(false && "Unimplemented axis"); // unreachable
+ }
+ }
+
+ template <class T> void step_fill(xpath_node_set_raw& ns, const xpath_node& xn, xpath_allocator* alloc, bool once, T v)
+ {
+ const axis_t axis = T::axis;
+ const bool axis_has_attributes = (axis == axis_ancestor || axis == axis_ancestor_or_self || axis == axis_descendant_or_self || axis == axis_following || axis == axis_parent || axis == axis_preceding || axis == axis_self);
+
+ if (xn.node())
+ step_fill(ns, xn.node().internal_object(), alloc, once, v);
+ else if (axis_has_attributes && xn.attribute() && xn.parent())
+ step_fill(ns, xn.attribute().internal_object(), xn.parent().internal_object(), alloc, once, v);
+ }
+
+ template <class T> xpath_node_set_raw step_do(const xpath_context& c, const xpath_stack& stack, nodeset_eval_t eval, T v)
+ {
+ const axis_t axis = T::axis;
+ const bool axis_reverse = (axis == axis_ancestor || axis == axis_ancestor_or_self || axis == axis_preceding || axis == axis_preceding_sibling);
+ const xpath_node_set::type_t axis_type = axis_reverse ? xpath_node_set::type_sorted_reverse : xpath_node_set::type_sorted;
+
+ bool once =
+ (axis == axis_attribute && _test == nodetest_name) ||
+ (!_right && eval_once(axis_type, eval)) ||
+ // coverity[mixed_enums]
+ (_right && !_right->_next && _right->_test == predicate_constant_one);
+
+ xpath_node_set_raw ns;
+ ns.set_type(axis_type);
+
+ if (_left)
+ {
+ xpath_node_set_raw s = _left->eval_node_set(c, stack, nodeset_eval_all);
+
+ // self axis preserves the original order
+ if (axis == axis_self) ns.set_type(s.type());
+
+ for (const xpath_node* it = s.begin(); it != s.end(); ++it)
+ {
+ size_t size = ns.size();
+
+ // in general, all axes generate elements in a particular order, but there is no order guarantee if axis is applied to two nodes
+ if (axis != axis_self && size != 0) ns.set_type(xpath_node_set::type_unsorted);
+
+ step_fill(ns, *it, stack.result, once, v);
+ if (_right) apply_predicates(ns, size, stack, eval);
+ }
+ }
+ else
+ {
+ step_fill(ns, c.n, stack.result, once, v);
+ if (_right) apply_predicates(ns, 0, stack, eval);
+ }
+
+ // child, attribute and self axes always generate unique set of nodes
+ // for other axis, if the set stayed sorted, it stayed unique because the traversal algorithms do not visit the same node twice
+ if (axis != axis_child && axis != axis_attribute && axis != axis_self && ns.type() == xpath_node_set::type_unsorted)
+ ns.remove_duplicates(stack.temp);
+
+ return ns;
+ }
+
+ public:
+ xpath_ast_node(ast_type_t type, xpath_value_type rettype_, const char_t* value):
+ _type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
+ {
+ assert(type == ast_string_constant);
+ _data.string = value;
+ }
+
+ xpath_ast_node(ast_type_t type, xpath_value_type rettype_, double value):
+ _type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
+ {
+ assert(type == ast_number_constant);
+ _data.number = value;
+ }
+
+ xpath_ast_node(ast_type_t type, xpath_value_type rettype_, xpath_variable* value):
+ _type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(0), _right(0), _next(0)
+ {
+ assert(type == ast_variable);
+ _data.variable = value;
+ }
+
+ xpath_ast_node(ast_type_t type, xpath_value_type rettype_, xpath_ast_node* left = 0, xpath_ast_node* right = 0):
+ _type(static_cast<char>(type)), _rettype(static_cast<char>(rettype_)), _axis(0), _test(0), _left(left), _right(right), _next(0)
+ {
+ }
+
+ xpath_ast_node(ast_type_t type, xpath_ast_node* left, axis_t axis, nodetest_t test, const char_t* contents):
+ _type(static_cast<char>(type)), _rettype(xpath_type_node_set), _axis(static_cast<char>(axis)), _test(static_cast<char>(test)), _left(left), _right(0), _next(0)
+ {
+ assert(type == ast_step);
+ _data.nodetest = contents;
+ }
+
+ xpath_ast_node(ast_type_t type, xpath_ast_node* left, xpath_ast_node* right, predicate_t test):
+ _type(static_cast<char>(type)), _rettype(xpath_type_node_set), _axis(0), _test(static_cast<char>(test)), _left(left), _right(right), _next(0)
+ {
+ assert(type == ast_filter || type == ast_predicate);
+ }
+
+ void set_next(xpath_ast_node* value)
+ {
+ _next = value;
+ }
+
+ void set_right(xpath_ast_node* value)
+ {
+ _right = value;
+ }
+
+ bool eval_boolean(const xpath_context& c, const xpath_stack& stack)
+ {
+ switch (_type)
+ {
+ case ast_op_or:
+ return _left->eval_boolean(c, stack) || _right->eval_boolean(c, stack);
+
+ case ast_op_and:
+ return _left->eval_boolean(c, stack) && _right->eval_boolean(c, stack);
+
+ case ast_op_equal:
+ return compare_eq(_left, _right, c, stack, equal_to());
+
+ case ast_op_not_equal:
+ return compare_eq(_left, _right, c, stack, not_equal_to());
+
+ case ast_op_less:
+ return compare_rel(_left, _right, c, stack, less());
+
+ case ast_op_greater:
+ return compare_rel(_right, _left, c, stack, less());
+
+ case ast_op_less_or_equal:
+ return compare_rel(_left, _right, c, stack, less_equal());
+
+ case ast_op_greater_or_equal:
+ return compare_rel(_right, _left, c, stack, less_equal());
+
+ case ast_func_starts_with:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_string lr = _left->eval_string(c, stack);
+ xpath_string rr = _right->eval_string(c, stack);
+
+ return starts_with(lr.c_str(), rr.c_str());
+ }
+
+ case ast_func_contains:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_string lr = _left->eval_string(c, stack);
+ xpath_string rr = _right->eval_string(c, stack);
+
+ return find_substring(lr.c_str(), rr.c_str()) != 0;
+ }
+
+ case ast_func_boolean:
+ return _left->eval_boolean(c, stack);
+
+ case ast_func_not:
+ return !_left->eval_boolean(c, stack);
+
+ case ast_func_true:
+ return true;
+
+ case ast_func_false:
+ return false;
+
+ case ast_func_lang:
+ {
+ if (c.n.attribute()) return false;
+
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_string lang = _left->eval_string(c, stack);
+
+ for (xml_node n = c.n.node(); n; n = n.parent())
+ {
+ xml_attribute a = n.attribute(PUGIXML_TEXT("xml:lang"));
+
+ if (a)
+ {
+ const char_t* value = a.value();
+
+ // strnicmp / strncasecmp is not portable
+ for (const char_t* lit = lang.c_str(); *lit; ++lit)
+ {
+ if (tolower_ascii(*lit) != tolower_ascii(*value)) return false;
+ ++value;
+ }
+
+ return *value == 0 || *value == '-';
+ }
+ }
+
+ return false;
+ }
+
+ case ast_opt_compare_attribute:
+ {
+ const char_t* value = (_right->_type == ast_string_constant) ? _right->_data.string : _right->_data.variable->get_string();
+
+ xml_attribute attr = c.n.node().attribute(_left->_data.nodetest);
+
+ return attr && strequal(attr.value(), value) && is_xpath_attribute(attr.name());
+ }
+
+ case ast_variable:
+ {
+ assert(_rettype == _data.variable->type());
+
+ if (_rettype == xpath_type_boolean)
+ return _data.variable->get_boolean();
+
+ // variable needs to be converted to the correct type, this is handled by the fallthrough block below
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ // none of the ast types that return the value directly matched, we need to perform type conversion
+ switch (_rettype)
+ {
+ case xpath_type_number:
+ return convert_number_to_boolean(eval_number(c, stack));
+
+ case xpath_type_string:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return !eval_string(c, stack).empty();
+ }
+
+ case xpath_type_node_set:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return !eval_node_set(c, stack, nodeset_eval_any).empty();
+ }
+
+ default:
+ assert(false && "Wrong expression for return type boolean"); // unreachable
+ return false;
+ }
+ }
+
+ double eval_number(const xpath_context& c, const xpath_stack& stack)
+ {
+ switch (_type)
+ {
+ case ast_op_add:
+ return _left->eval_number(c, stack) + _right->eval_number(c, stack);
+
+ case ast_op_subtract:
+ return _left->eval_number(c, stack) - _right->eval_number(c, stack);
+
+ case ast_op_multiply:
+ return _left->eval_number(c, stack) * _right->eval_number(c, stack);
+
+ case ast_op_divide:
+ return _left->eval_number(c, stack) / _right->eval_number(c, stack);
+
+ case ast_op_mod:
+ return fmod(_left->eval_number(c, stack), _right->eval_number(c, stack));
+
+ case ast_op_negate:
+ return -_left->eval_number(c, stack);
+
+ case ast_number_constant:
+ return _data.number;
+
+ case ast_func_last:
+ return static_cast<double>(c.size);
+
+ case ast_func_position:
+ return static_cast<double>(c.position);
+
+ case ast_func_count:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return static_cast<double>(_left->eval_node_set(c, stack, nodeset_eval_all).size());
+ }
+
+ case ast_func_string_length_0:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return static_cast<double>(string_value(c.n, stack.result).length());
+ }
+
+ case ast_func_string_length_1:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return static_cast<double>(_left->eval_string(c, stack).length());
+ }
+
+ case ast_func_number_0:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return convert_string_to_number(string_value(c.n, stack.result).c_str());
+ }
+
+ case ast_func_number_1:
+ return _left->eval_number(c, stack);
+
+ case ast_func_sum:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ double r = 0;
+
+ xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_all);
+
+ for (const xpath_node* it = ns.begin(); it != ns.end(); ++it)
+ {
+ xpath_allocator_capture cri(stack.result);
+
+ r += convert_string_to_number(string_value(*it, stack.result).c_str());
+ }
+
+ return r;
+ }
+
+ case ast_func_floor:
+ {
+ double r = _left->eval_number(c, stack);
+
+ return r == r ? floor(r) : r;
+ }
+
+ case ast_func_ceiling:
+ {
+ double r = _left->eval_number(c, stack);
+
+ return r == r ? ceil(r) : r;
+ }
+
+ case ast_func_round:
+ return round_nearest_nzero(_left->eval_number(c, stack));
+
+ case ast_variable:
+ {
+ assert(_rettype == _data.variable->type());
+
+ if (_rettype == xpath_type_number)
+ return _data.variable->get_number();
+
+ // variable needs to be converted to the correct type, this is handled by the fallthrough block below
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ // none of the ast types that return the value directly matched, we need to perform type conversion
+ switch (_rettype)
+ {
+ case xpath_type_boolean:
+ return eval_boolean(c, stack) ? 1 : 0;
+
+ case xpath_type_string:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return convert_string_to_number(eval_string(c, stack).c_str());
+ }
+
+ case xpath_type_node_set:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ return convert_string_to_number(eval_string(c, stack).c_str());
+ }
+
+ default:
+ assert(false && "Wrong expression for return type number"); // unreachable
+ return 0;
+ }
+ }
+
+ xpath_string eval_string_concat(const xpath_context& c, const xpath_stack& stack)
+ {
+ assert(_type == ast_func_concat);
+
+ xpath_allocator_capture ct(stack.temp);
+
+ // count the string number
+ size_t count = 1;
+ for (xpath_ast_node* nc = _right; nc; nc = nc->_next) count++;
+
+ // allocate a buffer for temporary string objects
+ xpath_string* buffer = static_cast<xpath_string*>(stack.temp->allocate(count * sizeof(xpath_string)));
+ if (!buffer) return xpath_string();
+
+ // evaluate all strings to temporary stack
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ buffer[0] = _left->eval_string(c, swapped_stack);
+
+ size_t pos = 1;
+ for (xpath_ast_node* n = _right; n; n = n->_next, ++pos) buffer[pos] = n->eval_string(c, swapped_stack);
+ assert(pos == count);
+
+ // get total length
+ size_t length = 0;
+ for (size_t i = 0; i < count; ++i) length += buffer[i].length();
+
+ // create final string
+ char_t* result = static_cast<char_t*>(stack.result->allocate((length + 1) * sizeof(char_t)));
+ if (!result) return xpath_string();
+
+ char_t* ri = result;
+
+ for (size_t j = 0; j < count; ++j)
+ for (const char_t* bi = buffer[j].c_str(); *bi; ++bi)
+ *ri++ = *bi;
+
+ *ri = 0;
+
+ return xpath_string::from_heap_preallocated(result, ri);
+ }
+
+ xpath_string eval_string(const xpath_context& c, const xpath_stack& stack)
+ {
+ switch (_type)
+ {
+ case ast_string_constant:
+ return xpath_string::from_const(_data.string);
+
+ case ast_func_local_name_0:
+ {
+ xpath_node na = c.n;
+
+ return xpath_string::from_const(local_name(na));
+ }
+
+ case ast_func_local_name_1:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
+ xpath_node na = ns.first();
+
+ return xpath_string::from_const(local_name(na));
+ }
+
+ case ast_func_name_0:
+ {
+ xpath_node na = c.n;
+
+ return xpath_string::from_const(qualified_name(na));
+ }
+
+ case ast_func_name_1:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
+ xpath_node na = ns.first();
+
+ return xpath_string::from_const(qualified_name(na));
+ }
+
+ case ast_func_namespace_uri_0:
+ {
+ xpath_node na = c.n;
+
+ return xpath_string::from_const(namespace_uri(na));
+ }
+
+ case ast_func_namespace_uri_1:
+ {
+ xpath_allocator_capture cr(stack.result);
+
+ xpath_node_set_raw ns = _left->eval_node_set(c, stack, nodeset_eval_first);
+ xpath_node na = ns.first();
+
+ return xpath_string::from_const(namespace_uri(na));
+ }
+
+ case ast_func_string_0:
+ return string_value(c.n, stack.result);
+
+ case ast_func_string_1:
+ return _left->eval_string(c, stack);
+
+ case ast_func_concat:
+ return eval_string_concat(c, stack);
+
+ case ast_func_substring_before:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_string s = _left->eval_string(c, swapped_stack);
+ xpath_string p = _right->eval_string(c, swapped_stack);
+
+ const char_t* pos = find_substring(s.c_str(), p.c_str());
+
+ return pos ? xpath_string::from_heap(s.c_str(), pos, stack.result) : xpath_string();
+ }
+
+ case ast_func_substring_after:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_string s = _left->eval_string(c, swapped_stack);
+ xpath_string p = _right->eval_string(c, swapped_stack);
+
+ const char_t* pos = find_substring(s.c_str(), p.c_str());
+ if (!pos) return xpath_string();
+
+ const char_t* rbegin = pos + p.length();
+ const char_t* rend = s.c_str() + s.length();
+
+ return s.uses_heap() ? xpath_string::from_heap(rbegin, rend, stack.result) : xpath_string::from_const(rbegin);
+ }
+
+ case ast_func_substring_2:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_string s = _left->eval_string(c, swapped_stack);
+ size_t s_length = s.length();
+
+ double first = round_nearest(_right->eval_number(c, stack));
+
+ if (is_nan(first)) return xpath_string(); // NaN
+ else if (first >= static_cast<double>(s_length + 1)) return xpath_string();
+
+ size_t pos = first < 1 ? 1 : static_cast<size_t>(first);
+ assert(1 <= pos && pos <= s_length + 1);
+
+ const char_t* rbegin = s.c_str() + (pos - 1);
+ const char_t* rend = s.c_str() + s.length();
+
+ return s.uses_heap() ? xpath_string::from_heap(rbegin, rend, stack.result) : xpath_string::from_const(rbegin);
+ }
+
+ case ast_func_substring_3:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_string s = _left->eval_string(c, swapped_stack);
+ size_t s_length = s.length();
+
+ double first = round_nearest(_right->eval_number(c, stack));
+ double last = first + round_nearest(_right->_next->eval_number(c, stack));
+
+ if (is_nan(first) || is_nan(last)) return xpath_string();
+ else if (first >= static_cast<double>(s_length + 1)) return xpath_string();
+ else if (first >= last) return xpath_string();
+ else if (last < 1) return xpath_string();
+
+ size_t pos = first < 1 ? 1 : static_cast<size_t>(first);
+ size_t end = last >= static_cast<double>(s_length + 1) ? s_length + 1 : static_cast<size_t>(last);
+
+ assert(1 <= pos && pos <= end && end <= s_length + 1);
+ const char_t* rbegin = s.c_str() + (pos - 1);
+ const char_t* rend = s.c_str() + (end - 1);
+
+ return (end == s_length + 1 && !s.uses_heap()) ? xpath_string::from_const(rbegin) : xpath_string::from_heap(rbegin, rend, stack.result);
+ }
+
+ case ast_func_normalize_space_0:
+ {
+ xpath_string s = string_value(c.n, stack.result);
+
+ char_t* begin = s.data(stack.result);
+ if (!begin) return xpath_string();
+
+ char_t* end = normalize_space(begin);
+
+ return xpath_string::from_heap_preallocated(begin, end);
+ }
+
+ case ast_func_normalize_space_1:
+ {
+ xpath_string s = _left->eval_string(c, stack);
+
+ char_t* begin = s.data(stack.result);
+ if (!begin) return xpath_string();
+
+ char_t* end = normalize_space(begin);
+
+ return xpath_string::from_heap_preallocated(begin, end);
+ }
+
+ case ast_func_translate:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_string s = _left->eval_string(c, stack);
+ xpath_string from = _right->eval_string(c, swapped_stack);
+ xpath_string to = _right->_next->eval_string(c, swapped_stack);
+
+ char_t* begin = s.data(stack.result);
+ if (!begin) return xpath_string();
+
+ char_t* end = translate(begin, from.c_str(), to.c_str(), to.length());
+
+ return xpath_string::from_heap_preallocated(begin, end);
+ }
+
+ case ast_opt_translate_table:
+ {
+ xpath_string s = _left->eval_string(c, stack);
+
+ char_t* begin = s.data(stack.result);
+ if (!begin) return xpath_string();
+
+ char_t* end = translate_table(begin, _data.table);
+
+ return xpath_string::from_heap_preallocated(begin, end);
+ }
+
+ case ast_variable:
+ {
+ assert(_rettype == _data.variable->type());
+
+ if (_rettype == xpath_type_string)
+ return xpath_string::from_const(_data.variable->get_string());
+
+ // variable needs to be converted to the correct type, this is handled by the fallthrough block below
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ // none of the ast types that return the value directly matched, we need to perform type conversion
+ switch (_rettype)
+ {
+ case xpath_type_boolean:
+ return xpath_string::from_const(eval_boolean(c, stack) ? PUGIXML_TEXT("true") : PUGIXML_TEXT("false"));
+
+ case xpath_type_number:
+ return convert_number_to_string(eval_number(c, stack), stack.result);
+
+ case xpath_type_node_set:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_node_set_raw ns = eval_node_set(c, swapped_stack, nodeset_eval_first);
+ return ns.empty() ? xpath_string() : string_value(ns.first(), stack.result);
+ }
+
+ default:
+ assert(false && "Wrong expression for return type string"); // unreachable
+ return xpath_string();
+ }
+ }
+
+ xpath_node_set_raw eval_node_set(const xpath_context& c, const xpath_stack& stack, nodeset_eval_t eval)
+ {
+ switch (_type)
+ {
+ case ast_op_union:
+ {
+ xpath_allocator_capture cr(stack.temp);
+
+ xpath_stack swapped_stack = {stack.temp, stack.result};
+
+ xpath_node_set_raw ls = _left->eval_node_set(c, stack, eval);
+ xpath_node_set_raw rs = _right->eval_node_set(c, swapped_stack, eval);
+
+ // we can optimize merging two sorted sets, but this is a very rare operation, so don't bother
+ ls.set_type(xpath_node_set::type_unsorted);
+
+ ls.append(rs.begin(), rs.end(), stack.result);
+ ls.remove_duplicates(stack.temp);
+
+ return ls;
+ }
+
+ case ast_filter:
+ {
+ xpath_node_set_raw set = _left->eval_node_set(c, stack, _test == predicate_constant_one ? nodeset_eval_first : nodeset_eval_all);
+
+ // either expression is a number or it contains position() call; sort by document order
+ if (_test != predicate_posinv) set.sort_do();
+
+ bool once = eval_once(set.type(), eval);
+
+ apply_predicate(set, 0, stack, once);
+
+ return set;
+ }
+
+ case ast_func_id:
+ return xpath_node_set_raw();
+
+ case ast_step:
+ {
+ switch (_axis)
+ {
+ case axis_ancestor:
+ return step_do(c, stack, eval, axis_to_type<axis_ancestor>());
+
+ case axis_ancestor_or_self:
+ return step_do(c, stack, eval, axis_to_type<axis_ancestor_or_self>());
+
+ case axis_attribute:
+ return step_do(c, stack, eval, axis_to_type<axis_attribute>());
+
+ case axis_child:
+ return step_do(c, stack, eval, axis_to_type<axis_child>());
+
+ case axis_descendant:
+ return step_do(c, stack, eval, axis_to_type<axis_descendant>());
+
+ case axis_descendant_or_self:
+ return step_do(c, stack, eval, axis_to_type<axis_descendant_or_self>());
+
+ case axis_following:
+ return step_do(c, stack, eval, axis_to_type<axis_following>());
+
+ case axis_following_sibling:
+ return step_do(c, stack, eval, axis_to_type<axis_following_sibling>());
+
+ case axis_namespace:
+ // namespaced axis is not supported
+ return xpath_node_set_raw();
+
+ case axis_parent:
+ return step_do(c, stack, eval, axis_to_type<axis_parent>());
+
+ case axis_preceding:
+ return step_do(c, stack, eval, axis_to_type<axis_preceding>());
+
+ case axis_preceding_sibling:
+ return step_do(c, stack, eval, axis_to_type<axis_preceding_sibling>());
+
+ case axis_self:
+ return step_do(c, stack, eval, axis_to_type<axis_self>());
+
+ default:
+ assert(false && "Unknown axis"); // unreachable
+ return xpath_node_set_raw();
+ }
+ }
+
+ case ast_step_root:
+ {
+ assert(!_right); // root step can't have any predicates
+
+ xpath_node_set_raw ns;
+
+ ns.set_type(xpath_node_set::type_sorted);
+
+ if (c.n.node()) ns.push_back(c.n.node().root(), stack.result);
+ else if (c.n.attribute()) ns.push_back(c.n.parent().root(), stack.result);
+
+ return ns;
+ }
+
+ case ast_variable:
+ {
+ assert(_rettype == _data.variable->type());
+
+ if (_rettype == xpath_type_node_set)
+ {
+ const xpath_node_set& s = _data.variable->get_node_set();
+
+ xpath_node_set_raw ns;
+
+ ns.set_type(s.type());
+ ns.append(s.begin(), s.end(), stack.result);
+
+ return ns;
+ }
+
+ // variable needs to be converted to the correct type, this is handled by the fallthrough block below
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ // none of the ast types that return the value directly matched, but conversions to node set are invalid
+ assert(false && "Wrong expression for return type node set"); // unreachable
+ return xpath_node_set_raw();
+ }
+
+ void optimize(xpath_allocator* alloc)
+ {
+ if (_left)
+ _left->optimize(alloc);
+
+ if (_right)
+ _right->optimize(alloc);
+
+ if (_next)
+ _next->optimize(alloc);
+
+ // coverity[var_deref_model]
+ optimize_self(alloc);
+ }
+
+ void optimize_self(xpath_allocator* alloc)
+ {
+ // Rewrite [position()=expr] with [expr]
+ // Note that this step has to go before classification to recognize [position()=1]
+ if ((_type == ast_filter || _type == ast_predicate) &&
+ _right && // workaround for clang static analyzer (_right is never null for ast_filter/ast_predicate)
+ _right->_type == ast_op_equal && _right->_left->_type == ast_func_position && _right->_right->_rettype == xpath_type_number)
+ {
+ _right = _right->_right;
+ }
+
+ // Classify filter/predicate ops to perform various optimizations during evaluation
+ if ((_type == ast_filter || _type == ast_predicate) && _right) // workaround for clang static analyzer (_right is never null for ast_filter/ast_predicate)
+ {
+ assert(_test == predicate_default);
+
+ if (_right->_type == ast_number_constant && _right->_data.number == 1.0)
+ _test = predicate_constant_one;
+ else if (_right->_rettype == xpath_type_number && (_right->_type == ast_number_constant || _right->_type == ast_variable || _right->_type == ast_func_last))
+ _test = predicate_constant;
+ else if (_right->_rettype != xpath_type_number && _right->is_posinv_expr())
+ _test = predicate_posinv;
+ }
+
+ // Rewrite descendant-or-self::node()/child::foo with descendant::foo
+ // The former is a full form of //foo, the latter is much faster since it executes the node test immediately
+ // Do a similar kind of rewrite for self/descendant/descendant-or-self axes
+ // Note that we only rewrite positionally invariant steps (//foo[1] != /descendant::foo[1])
+ if (_type == ast_step && (_axis == axis_child || _axis == axis_self || _axis == axis_descendant || _axis == axis_descendant_or_self) &&
+ _left && _left->_type == ast_step && _left->_axis == axis_descendant_or_self && _left->_test == nodetest_type_node && !_left->_right &&
+ is_posinv_step())
+ {
+ if (_axis == axis_child || _axis == axis_descendant)
+ _axis = axis_descendant;
+ else
+ _axis = axis_descendant_or_self;
+
+ _left = _left->_left;
+ }
+
+ // Use optimized lookup table implementation for translate() with constant arguments
+ if (_type == ast_func_translate &&
+ _right && // workaround for clang static analyzer (_right is never null for ast_func_translate)
+ _right->_type == ast_string_constant && _right->_next->_type == ast_string_constant)
+ {
+ unsigned char* table = translate_table_generate(alloc, _right->_data.string, _right->_next->_data.string);
+
+ if (table)
+ {
+ _type = ast_opt_translate_table;
+ _data.table = table;
+ }
+ }
+
+ // Use optimized path for @attr = 'value' or @attr = $value
+ if (_type == ast_op_equal &&
+ _left && _right && // workaround for clang static analyzer and Coverity (_left and _right are never null for ast_op_equal)
+ // coverity[mixed_enums]
+ _left->_type == ast_step && _left->_axis == axis_attribute && _left->_test == nodetest_name && !_left->_left && !_left->_right &&
+ (_right->_type == ast_string_constant || (_right->_type == ast_variable && _right->_rettype == xpath_type_string)))
+ {
+ _type = ast_opt_compare_attribute;
+ }
+ }
+
+ bool is_posinv_expr() const
+ {
+ switch (_type)
+ {
+ case ast_func_position:
+ case ast_func_last:
+ return false;
+
+ case ast_string_constant:
+ case ast_number_constant:
+ case ast_variable:
+ return true;
+
+ case ast_step:
+ case ast_step_root:
+ return true;
+
+ case ast_predicate:
+ case ast_filter:
+ return true;
+
+ default:
+ if (_left && !_left->is_posinv_expr()) return false;
+
+ for (xpath_ast_node* n = _right; n; n = n->_next)
+ if (!n->is_posinv_expr()) return false;
+
+ return true;
+ }
+ }
+
+ bool is_posinv_step() const
+ {
+ assert(_type == ast_step);
+
+ for (xpath_ast_node* n = _right; n; n = n->_next)
+ {
+ assert(n->_type == ast_predicate);
+
+ if (n->_test != predicate_posinv)
+ return false;
+ }
+
+ return true;
+ }
+
+ xpath_value_type rettype() const
+ {
+ return static_cast<xpath_value_type>(_rettype);
+ }
+ };
+
+ static const size_t xpath_ast_depth_limit =
+ #ifdef PUGIXML_XPATH_DEPTH_LIMIT
+ PUGIXML_XPATH_DEPTH_LIMIT
+ #else
+ 1024
+ #endif
+ ;
+
+ struct xpath_parser
+ {
+ xpath_allocator* _alloc;
+ xpath_lexer _lexer;
+
+ const char_t* _query;
+ xpath_variable_set* _variables;
+
+ xpath_parse_result* _result;
+
+ char_t _scratch[32];
+
+ size_t _depth;
+
+ xpath_ast_node* error(const char* message)
+ {
+ _result->error = message;
+ _result->offset = _lexer.current_pos() - _query;
+
+ return 0;
+ }
+
+ xpath_ast_node* error_oom()
+ {
+ assert(_alloc->_error);
+ *_alloc->_error = true;
+
+ return 0;
+ }
+
+ xpath_ast_node* error_rec()
+ {
+ return error("Exceeded maximum allowed query depth");
+ }
+
+ void* alloc_node()
+ {
+ return _alloc->allocate(sizeof(xpath_ast_node));
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_value_type rettype, const char_t* value)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, rettype, value) : 0;
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_value_type rettype, double value)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, rettype, value) : 0;
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_value_type rettype, xpath_variable* value)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, rettype, value) : 0;
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_value_type rettype, xpath_ast_node* left = 0, xpath_ast_node* right = 0)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, rettype, left, right) : 0;
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_ast_node* left, axis_t axis, nodetest_t test, const char_t* contents)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, left, axis, test, contents) : 0;
+ }
+
+ xpath_ast_node* alloc_node(ast_type_t type, xpath_ast_node* left, xpath_ast_node* right, predicate_t test)
+ {
+ void* memory = alloc_node();
+ return memory ? new (memory) xpath_ast_node(type, left, right, test) : 0;
+ }
+
+ const char_t* alloc_string(const xpath_lexer_string& value)
+ {
+ if (!value.begin)
+ return PUGIXML_TEXT("");
+
+ size_t length = static_cast<size_t>(value.end - value.begin);
+
+ char_t* c = static_cast<char_t*>(_alloc->allocate((length + 1) * sizeof(char_t)));
+ if (!c) return 0;
+
+ memcpy(c, value.begin, length * sizeof(char_t));
+ c[length] = 0;
+
+ return c;
+ }
+
+ xpath_ast_node* parse_function(const xpath_lexer_string& name, size_t argc, xpath_ast_node* args[2])
+ {
+ switch (name.begin[0])
+ {
+ case 'b':
+ if (name == PUGIXML_TEXT("boolean") && argc == 1)
+ return alloc_node(ast_func_boolean, xpath_type_boolean, args[0]);
+
+ break;
+
+ case 'c':
+ if (name == PUGIXML_TEXT("count") && argc == 1)
+ {
+ if (args[0]->rettype() != xpath_type_node_set) return error("Function has to be applied to node set");
+ return alloc_node(ast_func_count, xpath_type_number, args[0]);
+ }
+ else if (name == PUGIXML_TEXT("contains") && argc == 2)
+ return alloc_node(ast_func_contains, xpath_type_boolean, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("concat") && argc >= 2)
+ return alloc_node(ast_func_concat, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("ceiling") && argc == 1)
+ return alloc_node(ast_func_ceiling, xpath_type_number, args[0]);
+
+ break;
+
+ case 'f':
+ if (name == PUGIXML_TEXT("false") && argc == 0)
+ return alloc_node(ast_func_false, xpath_type_boolean);
+ else if (name == PUGIXML_TEXT("floor") && argc == 1)
+ return alloc_node(ast_func_floor, xpath_type_number, args[0]);
+
+ break;
+
+ case 'i':
+ if (name == PUGIXML_TEXT("id") && argc == 1)
+ return alloc_node(ast_func_id, xpath_type_node_set, args[0]);
+
+ break;
+
+ case 'l':
+ if (name == PUGIXML_TEXT("last") && argc == 0)
+ return alloc_node(ast_func_last, xpath_type_number);
+ else if (name == PUGIXML_TEXT("lang") && argc == 1)
+ return alloc_node(ast_func_lang, xpath_type_boolean, args[0]);
+ else if (name == PUGIXML_TEXT("local-name") && argc <= 1)
+ {
+ if (argc == 1 && args[0]->rettype() != xpath_type_node_set) return error("Function has to be applied to node set");
+ return alloc_node(argc == 0 ? ast_func_local_name_0 : ast_func_local_name_1, xpath_type_string, args[0]);
+ }
+
+ break;
+
+ case 'n':
+ if (name == PUGIXML_TEXT("name") && argc <= 1)
+ {
+ if (argc == 1 && args[0]->rettype() != xpath_type_node_set) return error("Function has to be applied to node set");
+ return alloc_node(argc == 0 ? ast_func_name_0 : ast_func_name_1, xpath_type_string, args[0]);
+ }
+ else if (name == PUGIXML_TEXT("namespace-uri") && argc <= 1)
+ {
+ if (argc == 1 && args[0]->rettype() != xpath_type_node_set) return error("Function has to be applied to node set");
+ return alloc_node(argc == 0 ? ast_func_namespace_uri_0 : ast_func_namespace_uri_1, xpath_type_string, args[0]);
+ }
+ else if (name == PUGIXML_TEXT("normalize-space") && argc <= 1)
+ return alloc_node(argc == 0 ? ast_func_normalize_space_0 : ast_func_normalize_space_1, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("not") && argc == 1)
+ return alloc_node(ast_func_not, xpath_type_boolean, args[0]);
+ else if (name == PUGIXML_TEXT("number") && argc <= 1)
+ return alloc_node(argc == 0 ? ast_func_number_0 : ast_func_number_1, xpath_type_number, args[0]);
+
+ break;
+
+ case 'p':
+ if (name == PUGIXML_TEXT("position") && argc == 0)
+ return alloc_node(ast_func_position, xpath_type_number);
+
+ break;
+
+ case 'r':
+ if (name == PUGIXML_TEXT("round") && argc == 1)
+ return alloc_node(ast_func_round, xpath_type_number, args[0]);
+
+ break;
+
+ case 's':
+ if (name == PUGIXML_TEXT("string") && argc <= 1)
+ return alloc_node(argc == 0 ? ast_func_string_0 : ast_func_string_1, xpath_type_string, args[0]);
+ else if (name == PUGIXML_TEXT("string-length") && argc <= 1)
+ return alloc_node(argc == 0 ? ast_func_string_length_0 : ast_func_string_length_1, xpath_type_number, args[0]);
+ else if (name == PUGIXML_TEXT("starts-with") && argc == 2)
+ return alloc_node(ast_func_starts_with, xpath_type_boolean, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("substring-before") && argc == 2)
+ return alloc_node(ast_func_substring_before, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("substring-after") && argc == 2)
+ return alloc_node(ast_func_substring_after, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("substring") && (argc == 2 || argc == 3))
+ return alloc_node(argc == 2 ? ast_func_substring_2 : ast_func_substring_3, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("sum") && argc == 1)
+ {
+ if (args[0]->rettype() != xpath_type_node_set) return error("Function has to be applied to node set");
+ return alloc_node(ast_func_sum, xpath_type_number, args[0]);
+ }
+
+ break;
+
+ case 't':
+ if (name == PUGIXML_TEXT("translate") && argc == 3)
+ return alloc_node(ast_func_translate, xpath_type_string, args[0], args[1]);
+ else if (name == PUGIXML_TEXT("true") && argc == 0)
+ return alloc_node(ast_func_true, xpath_type_boolean);
+
+ break;
+
+ default:
+ break;
+ }
+
+ return error("Unrecognized function or wrong parameter count");
+ }
+
+ axis_t parse_axis_name(const xpath_lexer_string& name, bool& specified)
+ {
+ specified = true;
+
+ switch (name.begin[0])
+ {
+ case 'a':
+ if (name == PUGIXML_TEXT("ancestor"))
+ return axis_ancestor;
+ else if (name == PUGIXML_TEXT("ancestor-or-self"))
+ return axis_ancestor_or_self;
+ else if (name == PUGIXML_TEXT("attribute"))
+ return axis_attribute;
+
+ break;
+
+ case 'c':
+ if (name == PUGIXML_TEXT("child"))
+ return axis_child;
+
+ break;
+
+ case 'd':
+ if (name == PUGIXML_TEXT("descendant"))
+ return axis_descendant;
+ else if (name == PUGIXML_TEXT("descendant-or-self"))
+ return axis_descendant_or_self;
+
+ break;
+
+ case 'f':
+ if (name == PUGIXML_TEXT("following"))
+ return axis_following;
+ else if (name == PUGIXML_TEXT("following-sibling"))
+ return axis_following_sibling;
+
+ break;
+
+ case 'n':
+ if (name == PUGIXML_TEXT("namespace"))
+ return axis_namespace;
+
+ break;
+
+ case 'p':
+ if (name == PUGIXML_TEXT("parent"))
+ return axis_parent;
+ else if (name == PUGIXML_TEXT("preceding"))
+ return axis_preceding;
+ else if (name == PUGIXML_TEXT("preceding-sibling"))
+ return axis_preceding_sibling;
+
+ break;
+
+ case 's':
+ if (name == PUGIXML_TEXT("self"))
+ return axis_self;
+
+ break;
+
+ default:
+ break;
+ }
+
+ specified = false;
+ return axis_child;
+ }
+
+ nodetest_t parse_node_test_type(const xpath_lexer_string& name)
+ {
+ switch (name.begin[0])
+ {
+ case 'c':
+ if (name == PUGIXML_TEXT("comment"))
+ return nodetest_type_comment;
+
+ break;
+
+ case 'n':
+ if (name == PUGIXML_TEXT("node"))
+ return nodetest_type_node;
+
+ break;
+
+ case 'p':
+ if (name == PUGIXML_TEXT("processing-instruction"))
+ return nodetest_type_pi;
+
+ break;
+
+ case 't':
+ if (name == PUGIXML_TEXT("text"))
+ return nodetest_type_text;
+
+ break;
+
+ default:
+ break;
+ }
+
+ return nodetest_none;
+ }
+
+ // PrimaryExpr ::= VariableReference | '(' Expr ')' | Literal | Number | FunctionCall
+ xpath_ast_node* parse_primary_expression()
+ {
+ switch (_lexer.current())
+ {
+ case lex_var_ref:
+ {
+ xpath_lexer_string name = _lexer.contents();
+
+ if (!_variables)
+ return error("Unknown variable: variable set is not provided");
+
+ xpath_variable* var = 0;
+ if (!get_variable_scratch(_scratch, _variables, name.begin, name.end, &var))
+ return error_oom();
+
+ if (!var)
+ return error("Unknown variable: variable set does not contain the given name");
+
+ _lexer.next();
+
+ return alloc_node(ast_variable, var->type(), var);
+ }
+
+ case lex_open_brace:
+ {
+ _lexer.next();
+
+ xpath_ast_node* n = parse_expression();
+ if (!n) return 0;
+
+ if (_lexer.current() != lex_close_brace)
+ return error("Expected ')' to match an opening '('");
+
+ _lexer.next();
+
+ return n;
+ }
+
+ case lex_quoted_string:
+ {
+ const char_t* value = alloc_string(_lexer.contents());
+ if (!value) return 0;
+
+ _lexer.next();
+
+ return alloc_node(ast_string_constant, xpath_type_string, value);
+ }
+
+ case lex_number:
+ {
+ double value = 0;
+
+ if (!convert_string_to_number_scratch(_scratch, _lexer.contents().begin, _lexer.contents().end, &value))
+ return error_oom();
+
+ _lexer.next();
+
+ return alloc_node(ast_number_constant, xpath_type_number, value);
+ }
+
+ case lex_string:
+ {
+ xpath_ast_node* args[2] = {0};
+ size_t argc = 0;
+
+ xpath_lexer_string function = _lexer.contents();
+ _lexer.next();
+
+ xpath_ast_node* last_arg = 0;
+
+ if (_lexer.current() != lex_open_brace)
+ return error("Unrecognized function call");
+ _lexer.next();
+
+ size_t old_depth = _depth;
+
+ while (_lexer.current() != lex_close_brace)
+ {
+ if (argc > 0)
+ {
+ if (_lexer.current() != lex_comma)
+ return error("No comma between function arguments");
+ _lexer.next();
+ }
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ xpath_ast_node* n = parse_expression();
+ if (!n) return 0;
+
+ if (argc < 2) args[argc] = n;
+ else last_arg->set_next(n);
+
+ argc++;
+ last_arg = n;
+ }
+
+ _lexer.next();
+
+ _depth = old_depth;
+
+ return parse_function(function, argc, args);
+ }
+
+ default:
+ return error("Unrecognizable primary expression");
+ }
+ }
+
+ // FilterExpr ::= PrimaryExpr | FilterExpr Predicate
+ // Predicate ::= '[' PredicateExpr ']'
+ // PredicateExpr ::= Expr
+ xpath_ast_node* parse_filter_expression()
+ {
+ xpath_ast_node* n = parse_primary_expression();
+ if (!n) return 0;
+
+ size_t old_depth = _depth;
+
+ while (_lexer.current() == lex_open_square_brace)
+ {
+ _lexer.next();
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ if (n->rettype() != xpath_type_node_set)
+ return error("Predicate has to be applied to node set");
+
+ xpath_ast_node* expr = parse_expression();
+ if (!expr) return 0;
+
+ n = alloc_node(ast_filter, n, expr, predicate_default);
+ if (!n) return 0;
+
+ if (_lexer.current() != lex_close_square_brace)
+ return error("Expected ']' to match an opening '['");
+
+ _lexer.next();
+ }
+
+ _depth = old_depth;
+
+ return n;
+ }
+
+ // Step ::= AxisSpecifier NodeTest Predicate* | AbbreviatedStep
+ // AxisSpecifier ::= AxisName '::' | '@'?
+ // NodeTest ::= NameTest | NodeType '(' ')' | 'processing-instruction' '(' Literal ')'
+ // NameTest ::= '*' | NCName ':' '*' | QName
+ // AbbreviatedStep ::= '.' | '..'
+ xpath_ast_node* parse_step(xpath_ast_node* set)
+ {
+ if (set && set->rettype() != xpath_type_node_set)
+ return error("Step has to be applied to node set");
+
+ bool axis_specified = false;
+ axis_t axis = axis_child; // implied child axis
+
+ if (_lexer.current() == lex_axis_attribute)
+ {
+ axis = axis_attribute;
+ axis_specified = true;
+
+ _lexer.next();
+ }
+ else if (_lexer.current() == lex_dot)
+ {
+ _lexer.next();
+
+ if (_lexer.current() == lex_open_square_brace)
+ return error("Predicates are not allowed after an abbreviated step");
+
+ return alloc_node(ast_step, set, axis_self, nodetest_type_node, 0);
+ }
+ else if (_lexer.current() == lex_double_dot)
+ {
+ _lexer.next();
+
+ if (_lexer.current() == lex_open_square_brace)
+ return error("Predicates are not allowed after an abbreviated step");
+
+ return alloc_node(ast_step, set, axis_parent, nodetest_type_node, 0);
+ }
+
+ nodetest_t nt_type = nodetest_none;
+ xpath_lexer_string nt_name;
+
+ if (_lexer.current() == lex_string)
+ {
+ // node name test
+ nt_name = _lexer.contents();
+ _lexer.next();
+
+ // was it an axis name?
+ if (_lexer.current() == lex_double_colon)
+ {
+ // parse axis name
+ if (axis_specified)
+ return error("Two axis specifiers in one step");
+
+ axis = parse_axis_name(nt_name, axis_specified);
+
+ if (!axis_specified)
+ return error("Unknown axis");
+
+ // read actual node test
+ _lexer.next();
+
+ if (_lexer.current() == lex_multiply)
+ {
+ nt_type = nodetest_all;
+ nt_name = xpath_lexer_string();
+ _lexer.next();
+ }
+ else if (_lexer.current() == lex_string)
+ {
+ nt_name = _lexer.contents();
+ _lexer.next();
+ }
+ else
+ {
+ return error("Unrecognized node test");
+ }
+ }
+
+ if (nt_type == nodetest_none)
+ {
+ // node type test or processing-instruction
+ if (_lexer.current() == lex_open_brace)
+ {
+ _lexer.next();
+
+ if (_lexer.current() == lex_close_brace)
+ {
+ _lexer.next();
+
+ nt_type = parse_node_test_type(nt_name);
+
+ if (nt_type == nodetest_none)
+ return error("Unrecognized node type");
+
+ nt_name = xpath_lexer_string();
+ }
+ else if (nt_name == PUGIXML_TEXT("processing-instruction"))
+ {
+ if (_lexer.current() != lex_quoted_string)
+ return error("Only literals are allowed as arguments to processing-instruction()");
+
+ nt_type = nodetest_pi;
+ nt_name = _lexer.contents();
+ _lexer.next();
+
+ if (_lexer.current() != lex_close_brace)
+ return error("Unmatched brace near processing-instruction()");
+ _lexer.next();
+ }
+ else
+ {
+ return error("Unmatched brace near node type test");
+ }
+ }
+ // QName or NCName:*
+ else
+ {
+ if (nt_name.end - nt_name.begin > 2 && nt_name.end[-2] == ':' && nt_name.end[-1] == '*') // NCName:*
+ {
+ nt_name.end--; // erase *
+
+ nt_type = nodetest_all_in_namespace;
+ }
+ else
+ {
+ nt_type = nodetest_name;
+ }
+ }
+ }
+ }
+ else if (_lexer.current() == lex_multiply)
+ {
+ nt_type = nodetest_all;
+ _lexer.next();
+ }
+ else
+ {
+ return error("Unrecognized node test");
+ }
+
+ const char_t* nt_name_copy = alloc_string(nt_name);
+ if (!nt_name_copy) return 0;
+
+ xpath_ast_node* n = alloc_node(ast_step, set, axis, nt_type, nt_name_copy);
+ if (!n) return 0;
+
+ size_t old_depth = _depth;
+
+ xpath_ast_node* last = 0;
+
+ while (_lexer.current() == lex_open_square_brace)
+ {
+ _lexer.next();
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ xpath_ast_node* expr = parse_expression();
+ if (!expr) return 0;
+
+ xpath_ast_node* pred = alloc_node(ast_predicate, 0, expr, predicate_default);
+ if (!pred) return 0;
+
+ if (_lexer.current() != lex_close_square_brace)
+ return error("Expected ']' to match an opening '['");
+ _lexer.next();
+
+ if (last) last->set_next(pred);
+ else n->set_right(pred);
+
+ last = pred;
+ }
+
+ _depth = old_depth;
+
+ return n;
+ }
+
+ // RelativeLocationPath ::= Step | RelativeLocationPath '/' Step | RelativeLocationPath '//' Step
+ xpath_ast_node* parse_relative_location_path(xpath_ast_node* set)
+ {
+ xpath_ast_node* n = parse_step(set);
+ if (!n) return 0;
+
+ size_t old_depth = _depth;
+
+ while (_lexer.current() == lex_slash || _lexer.current() == lex_double_slash)
+ {
+ lexeme_t l = _lexer.current();
+ _lexer.next();
+
+ if (l == lex_double_slash)
+ {
+ n = alloc_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
+ if (!n) return 0;
+
+ ++_depth;
+ }
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ n = parse_step(n);
+ if (!n) return 0;
+ }
+
+ _depth = old_depth;
+
+ return n;
+ }
+
+ // LocationPath ::= RelativeLocationPath | AbsoluteLocationPath
+ // AbsoluteLocationPath ::= '/' RelativeLocationPath? | '//' RelativeLocationPath
+ xpath_ast_node* parse_location_path()
+ {
+ if (_lexer.current() == lex_slash)
+ {
+ _lexer.next();
+
+ xpath_ast_node* n = alloc_node(ast_step_root, xpath_type_node_set);
+ if (!n) return 0;
+
+ // relative location path can start from axis_attribute, dot, double_dot, multiply and string lexemes; any other lexeme means standalone root path
+ lexeme_t l = _lexer.current();
+
+ if (l == lex_string || l == lex_axis_attribute || l == lex_dot || l == lex_double_dot || l == lex_multiply)
+ return parse_relative_location_path(n);
+ else
+ return n;
+ }
+ else if (_lexer.current() == lex_double_slash)
+ {
+ _lexer.next();
+
+ xpath_ast_node* n = alloc_node(ast_step_root, xpath_type_node_set);
+ if (!n) return 0;
+
+ n = alloc_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
+ if (!n) return 0;
+
+ return parse_relative_location_path(n);
+ }
+
+ // else clause moved outside of if because of bogus warning 'control may reach end of non-void function being inlined' in gcc 4.0.1
+ return parse_relative_location_path(0);
+ }
+
+ // PathExpr ::= LocationPath
+ // | FilterExpr
+ // | FilterExpr '/' RelativeLocationPath
+ // | FilterExpr '//' RelativeLocationPath
+ // UnionExpr ::= PathExpr | UnionExpr '|' PathExpr
+ // UnaryExpr ::= UnionExpr | '-' UnaryExpr
+ xpath_ast_node* parse_path_or_unary_expression()
+ {
+ // Clarification.
+ // PathExpr begins with either LocationPath or FilterExpr.
+ // FilterExpr begins with PrimaryExpr
+ // PrimaryExpr begins with '$' in case of it being a variable reference,
+ // '(' in case of it being an expression, string literal, number constant or
+ // function call.
+ if (_lexer.current() == lex_var_ref || _lexer.current() == lex_open_brace ||
+ _lexer.current() == lex_quoted_string || _lexer.current() == lex_number ||
+ _lexer.current() == lex_string)
+ {
+ if (_lexer.current() == lex_string)
+ {
+ // This is either a function call, or not - if not, we shall proceed with location path
+ const char_t* state = _lexer.state();
+
+ while (PUGI__IS_CHARTYPE(*state, ct_space)) ++state;
+
+ if (*state != '(')
+ return parse_location_path();
+
+ // This looks like a function call; however this still can be a node-test. Check it.
+ if (parse_node_test_type(_lexer.contents()) != nodetest_none)
+ return parse_location_path();
+ }
+
+ xpath_ast_node* n = parse_filter_expression();
+ if (!n) return 0;
+
+ if (_lexer.current() == lex_slash || _lexer.current() == lex_double_slash)
+ {
+ lexeme_t l = _lexer.current();
+ _lexer.next();
+
+ if (l == lex_double_slash)
+ {
+ if (n->rettype() != xpath_type_node_set)
+ return error("Step has to be applied to node set");
+
+ n = alloc_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
+ if (!n) return 0;
+ }
+
+ // select from location path
+ return parse_relative_location_path(n);
+ }
+
+ return n;
+ }
+ else if (_lexer.current() == lex_minus)
+ {
+ _lexer.next();
+
+ // precedence 7+ - only parses union expressions
+ xpath_ast_node* n = parse_expression(7);
+ if (!n) return 0;
+
+ return alloc_node(ast_op_negate, xpath_type_number, n);
+ }
+ else
+ {
+ return parse_location_path();
+ }
+ }
+
+ struct binary_op_t
+ {
+ ast_type_t asttype;
+ xpath_value_type rettype;
+ int precedence;
+
+ binary_op_t(): asttype(ast_unknown), rettype(xpath_type_none), precedence(0)
+ {
+ }
+
+ binary_op_t(ast_type_t asttype_, xpath_value_type rettype_, int precedence_): asttype(asttype_), rettype(rettype_), precedence(precedence_)
+ {
+ }
+
+ static binary_op_t parse(xpath_lexer& lexer)
+ {
+ switch (lexer.current())
+ {
+ case lex_string:
+ if (lexer.contents() == PUGIXML_TEXT("or"))
+ return binary_op_t(ast_op_or, xpath_type_boolean, 1);
+ else if (lexer.contents() == PUGIXML_TEXT("and"))
+ return binary_op_t(ast_op_and, xpath_type_boolean, 2);
+ else if (lexer.contents() == PUGIXML_TEXT("div"))
+ return binary_op_t(ast_op_divide, xpath_type_number, 6);
+ else if (lexer.contents() == PUGIXML_TEXT("mod"))
+ return binary_op_t(ast_op_mod, xpath_type_number, 6);
+ else
+ return binary_op_t();
+
+ case lex_equal:
+ return binary_op_t(ast_op_equal, xpath_type_boolean, 3);
+
+ case lex_not_equal:
+ return binary_op_t(ast_op_not_equal, xpath_type_boolean, 3);
+
+ case lex_less:
+ return binary_op_t(ast_op_less, xpath_type_boolean, 4);
+
+ case lex_greater:
+ return binary_op_t(ast_op_greater, xpath_type_boolean, 4);
+
+ case lex_less_or_equal:
+ return binary_op_t(ast_op_less_or_equal, xpath_type_boolean, 4);
+
+ case lex_greater_or_equal:
+ return binary_op_t(ast_op_greater_or_equal, xpath_type_boolean, 4);
+
+ case lex_plus:
+ return binary_op_t(ast_op_add, xpath_type_number, 5);
+
+ case lex_minus:
+ return binary_op_t(ast_op_subtract, xpath_type_number, 5);
+
+ case lex_multiply:
+ return binary_op_t(ast_op_multiply, xpath_type_number, 6);
+
+ case lex_union:
+ return binary_op_t(ast_op_union, xpath_type_node_set, 7);
+
+ default:
+ return binary_op_t();
+ }
+ }
+ };
+
+ xpath_ast_node* parse_expression_rec(xpath_ast_node* lhs, int limit)
+ {
+ binary_op_t op = binary_op_t::parse(_lexer);
+
+ while (op.asttype != ast_unknown && op.precedence >= limit)
+ {
+ _lexer.next();
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ xpath_ast_node* rhs = parse_path_or_unary_expression();
+ if (!rhs) return 0;
+
+ binary_op_t nextop = binary_op_t::parse(_lexer);
+
+ while (nextop.asttype != ast_unknown && nextop.precedence > op.precedence)
+ {
+ rhs = parse_expression_rec(rhs, nextop.precedence);
+ if (!rhs) return 0;
+
+ nextop = binary_op_t::parse(_lexer);
+ }
+
+ if (op.asttype == ast_op_union && (lhs->rettype() != xpath_type_node_set || rhs->rettype() != xpath_type_node_set))
+ return error("Union operator has to be applied to node sets");
+
+ lhs = alloc_node(op.asttype, op.rettype, lhs, rhs);
+ if (!lhs) return 0;
+
+ op = binary_op_t::parse(_lexer);
+ }
+
+ return lhs;
+ }
+
+ // Expr ::= OrExpr
+ // OrExpr ::= AndExpr | OrExpr 'or' AndExpr
+ // AndExpr ::= EqualityExpr | AndExpr 'and' EqualityExpr
+ // EqualityExpr ::= RelationalExpr
+ // | EqualityExpr '=' RelationalExpr
+ // | EqualityExpr '!=' RelationalExpr
+ // RelationalExpr ::= AdditiveExpr
+ // | RelationalExpr '<' AdditiveExpr
+ // | RelationalExpr '>' AdditiveExpr
+ // | RelationalExpr '<=' AdditiveExpr
+ // | RelationalExpr '>=' AdditiveExpr
+ // AdditiveExpr ::= MultiplicativeExpr
+ // | AdditiveExpr '+' MultiplicativeExpr
+ // | AdditiveExpr '-' MultiplicativeExpr
+ // MultiplicativeExpr ::= UnaryExpr
+ // | MultiplicativeExpr '*' UnaryExpr
+ // | MultiplicativeExpr 'div' UnaryExpr
+ // | MultiplicativeExpr 'mod' UnaryExpr
+ xpath_ast_node* parse_expression(int limit = 0)
+ {
+ size_t old_depth = _depth;
+
+ if (++_depth > xpath_ast_depth_limit)
+ return error_rec();
+
+ xpath_ast_node* n = parse_path_or_unary_expression();
+ if (!n) return 0;
+
+ n = parse_expression_rec(n, limit);
+
+ _depth = old_depth;
+
+ return n;
+ }
+
+ xpath_parser(const char_t* query, xpath_variable_set* variables, xpath_allocator* alloc, xpath_parse_result* result): _alloc(alloc), _lexer(query), _query(query), _variables(variables), _result(result), _depth(0)
+ {
+ }
+
+ xpath_ast_node* parse()
+ {
+ xpath_ast_node* n = parse_expression();
+ if (!n) return 0;
+
+ assert(_depth == 0);
+
+ // check if there are unparsed tokens left
+ if (_lexer.current() != lex_eof)
+ return error("Incorrect query");
+
+ return n;
+ }
+
+ static xpath_ast_node* parse(const char_t* query, xpath_variable_set* variables, xpath_allocator* alloc, xpath_parse_result* result)
+ {
+ xpath_parser parser(query, variables, alloc, result);
+
+ return parser.parse();
+ }
+ };
+
+ struct xpath_query_impl
+ {
+ static xpath_query_impl* create()
+ {
+ void* memory = xml_memory::allocate(sizeof(xpath_query_impl));
+ if (!memory) return 0;
+
+ return new (memory) xpath_query_impl();
+ }
+
+ static void destroy(xpath_query_impl* impl)
+ {
+ // free all allocated pages
+ impl->alloc.release();
+
+ // free allocator memory (with the first page)
+ xml_memory::deallocate(impl);
+ }
+
+ xpath_query_impl(): root(0), alloc(&block, &oom), oom(false)
+ {
+ block.next = 0;
+ block.capacity = sizeof(block.data);
+ }
+
+ xpath_ast_node* root;
+ xpath_allocator alloc;
+ xpath_memory_block block;
+ bool oom;
+ };
+
+ PUGI__FN impl::xpath_ast_node* evaluate_node_set_prepare(xpath_query_impl* impl)
+ {
+ if (!impl) return 0;
+
+ if (impl->root->rettype() != xpath_type_node_set)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return 0;
+ #else
+ xpath_parse_result res;
+ res.error = "Expression does not evaluate to node set";
+
+ throw xpath_exception(res);
+ #endif
+ }
+
+ return impl->root;
+ }
+PUGI__NS_END
+
+namespace pugi
+{
+#ifndef PUGIXML_NO_EXCEPTIONS
+ PUGI__FN xpath_exception::xpath_exception(const xpath_parse_result& result_): _result(result_)
+ {
+ assert(_result.error);
+ }
+
+ PUGI__FN const char* xpath_exception::what() const throw()
+ {
+ return _result.error;
+ }
+
+ PUGI__FN const xpath_parse_result& xpath_exception::result() const
+ {
+ return _result;
+ }
+#endif
+
+ PUGI__FN xpath_node::xpath_node()
+ {
+ }
+
+ PUGI__FN xpath_node::xpath_node(const xml_node& node_): _node(node_)
+ {
+ }
+
+ PUGI__FN xpath_node::xpath_node(const xml_attribute& attribute_, const xml_node& parent_): _node(attribute_ ? parent_ : xml_node()), _attribute(attribute_)
+ {
+ }
+
+ PUGI__FN xml_node xpath_node::node() const
+ {
+ return _attribute ? xml_node() : _node;
+ }
+
+ PUGI__FN xml_attribute xpath_node::attribute() const
+ {
+ return _attribute;
+ }
+
+ PUGI__FN xml_node xpath_node::parent() const
+ {
+ return _attribute ? _node : _node.parent();
+ }
+
+ PUGI__FN static void unspecified_bool_xpath_node(xpath_node***)
+ {
+ }
+
+ PUGI__FN xpath_node::operator xpath_node::unspecified_bool_type() const
+ {
+ return (_node || _attribute) ? unspecified_bool_xpath_node : 0;
+ }
+
+ PUGI__FN bool xpath_node::operator!() const
+ {
+ return !(_node || _attribute);
+ }
+
+ PUGI__FN bool xpath_node::operator==(const xpath_node& n) const
+ {
+ return _node == n._node && _attribute == n._attribute;
+ }
+
+ PUGI__FN bool xpath_node::operator!=(const xpath_node& n) const
+ {
+ return _node != n._node || _attribute != n._attribute;
+ }
+
+#ifdef __BORLANDC__
+ PUGI__FN bool operator&&(const xpath_node& lhs, bool rhs)
+ {
+ return (bool)lhs && rhs;
+ }
+
+ PUGI__FN bool operator||(const xpath_node& lhs, bool rhs)
+ {
+ return (bool)lhs || rhs;
+ }
+#endif
+
+ PUGI__FN void xpath_node_set::_assign(const_iterator begin_, const_iterator end_, type_t type_)
+ {
+ assert(begin_ <= end_);
+
+ size_t size_ = static_cast<size_t>(end_ - begin_);
+
+ // use internal buffer for 0 or 1 elements, heap buffer otherwise
+ xpath_node* storage = (size_ <= 1) ? _storage : static_cast<xpath_node*>(impl::xml_memory::allocate(size_ * sizeof(xpath_node)));
+
+ if (!storage)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return;
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ // deallocate old buffer
+ if (_begin != _storage)
+ impl::xml_memory::deallocate(_begin);
+
+ // size check is necessary because for begin_ = end_ = nullptr, memcpy is UB
+ if (size_)
+ memcpy(storage, begin_, size_ * sizeof(xpath_node));
+
+ _begin = storage;
+ _end = storage + size_;
+ _type = type_;
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN void xpath_node_set::_move(xpath_node_set& rhs) PUGIXML_NOEXCEPT
+ {
+ _type = rhs._type;
+ _storage[0] = rhs._storage[0];
+ _begin = (rhs._begin == rhs._storage) ? _storage : rhs._begin;
+ _end = _begin + (rhs._end - rhs._begin);
+
+ rhs._type = type_unsorted;
+ rhs._begin = rhs._storage;
+ rhs._end = rhs._storage;
+ }
+#endif
+
+ PUGI__FN xpath_node_set::xpath_node_set(): _type(type_unsorted), _begin(_storage), _end(_storage)
+ {
+ }
+
+ PUGI__FN xpath_node_set::xpath_node_set(const_iterator begin_, const_iterator end_, type_t type_): _type(type_unsorted), _begin(_storage), _end(_storage)
+ {
+ _assign(begin_, end_, type_);
+ }
+
+ PUGI__FN xpath_node_set::~xpath_node_set()
+ {
+ if (_begin != _storage)
+ impl::xml_memory::deallocate(_begin);
+ }
+
+ PUGI__FN xpath_node_set::xpath_node_set(const xpath_node_set& ns): _type(type_unsorted), _begin(_storage), _end(_storage)
+ {
+ _assign(ns._begin, ns._end, ns._type);
+ }
+
+ PUGI__FN xpath_node_set& xpath_node_set::operator=(const xpath_node_set& ns)
+ {
+ if (this == &ns) return *this;
+
+ _assign(ns._begin, ns._end, ns._type);
+
+ return *this;
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN xpath_node_set::xpath_node_set(xpath_node_set&& rhs) PUGIXML_NOEXCEPT: _type(type_unsorted), _begin(_storage), _end(_storage)
+ {
+ _move(rhs);
+ }
+
+ PUGI__FN xpath_node_set& xpath_node_set::operator=(xpath_node_set&& rhs) PUGIXML_NOEXCEPT
+ {
+ if (this == &rhs) return *this;
+
+ if (_begin != _storage)
+ impl::xml_memory::deallocate(_begin);
+
+ _move(rhs);
+
+ return *this;
+ }
+#endif
+
+ PUGI__FN xpath_node_set::type_t xpath_node_set::type() const
+ {
+ return _type;
+ }
+
+ PUGI__FN size_t xpath_node_set::size() const
+ {
+ return _end - _begin;
+ }
+
+ PUGI__FN bool xpath_node_set::empty() const
+ {
+ return _begin == _end;
+ }
+
+ PUGI__FN const xpath_node& xpath_node_set::operator[](size_t index) const
+ {
+ assert(index < size());
+ return _begin[index];
+ }
+
+ PUGI__FN xpath_node_set::const_iterator xpath_node_set::begin() const
+ {
+ return _begin;
+ }
+
+ PUGI__FN xpath_node_set::const_iterator xpath_node_set::end() const
+ {
+ return _end;
+ }
+
+ PUGI__FN void xpath_node_set::sort(bool reverse)
+ {
+ _type = impl::xpath_sort(_begin, _end, _type, reverse);
+ }
+
+ PUGI__FN xpath_node xpath_node_set::first() const
+ {
+ return impl::xpath_first(_begin, _end, _type);
+ }
+
+ PUGI__FN xpath_parse_result::xpath_parse_result(): error("Internal error"), offset(0)
+ {
+ }
+
+ PUGI__FN xpath_parse_result::operator bool() const
+ {
+ return error == 0;
+ }
+
+ PUGI__FN const char* xpath_parse_result::description() const
+ {
+ return error ? error : "No error";
+ }
+
+ PUGI__FN xpath_variable::xpath_variable(xpath_value_type type_): _type(type_), _next(0)
+ {
+ }
+
+ PUGI__FN const char_t* xpath_variable::name() const
+ {
+ switch (_type)
+ {
+ case xpath_type_node_set:
+ return static_cast<const impl::xpath_variable_node_set*>(this)->name;
+
+ case xpath_type_number:
+ return static_cast<const impl::xpath_variable_number*>(this)->name;
+
+ case xpath_type_string:
+ return static_cast<const impl::xpath_variable_string*>(this)->name;
+
+ case xpath_type_boolean:
+ return static_cast<const impl::xpath_variable_boolean*>(this)->name;
+
+ default:
+ assert(false && "Invalid variable type"); // unreachable
+ return 0;
+ }
+ }
+
+ PUGI__FN xpath_value_type xpath_variable::type() const
+ {
+ return _type;
+ }
+
+ PUGI__FN bool xpath_variable::get_boolean() const
+ {
+ return (_type == xpath_type_boolean) ? static_cast<const impl::xpath_variable_boolean*>(this)->value : false;
+ }
+
+ PUGI__FN double xpath_variable::get_number() const
+ {
+ return (_type == xpath_type_number) ? static_cast<const impl::xpath_variable_number*>(this)->value : impl::gen_nan();
+ }
+
+ PUGI__FN const char_t* xpath_variable::get_string() const
+ {
+ const char_t* value = (_type == xpath_type_string) ? static_cast<const impl::xpath_variable_string*>(this)->value : 0;
+ return value ? value : PUGIXML_TEXT("");
+ }
+
+ PUGI__FN const xpath_node_set& xpath_variable::get_node_set() const
+ {
+ return (_type == xpath_type_node_set) ? static_cast<const impl::xpath_variable_node_set*>(this)->value : impl::dummy_node_set;
+ }
+
+ PUGI__FN bool xpath_variable::set(bool value)
+ {
+ if (_type != xpath_type_boolean) return false;
+
+ static_cast<impl::xpath_variable_boolean*>(this)->value = value;
+ return true;
+ }
+
+ PUGI__FN bool xpath_variable::set(double value)
+ {
+ if (_type != xpath_type_number) return false;
+
+ static_cast<impl::xpath_variable_number*>(this)->value = value;
+ return true;
+ }
+
+ PUGI__FN bool xpath_variable::set(const char_t* value)
+ {
+ if (_type != xpath_type_string) return false;
+
+ impl::xpath_variable_string* var = static_cast<impl::xpath_variable_string*>(this);
+
+ // duplicate string
+ size_t size = (impl::strlength(value) + 1) * sizeof(char_t);
+
+ char_t* copy = static_cast<char_t*>(impl::xml_memory::allocate(size));
+ if (!copy) return false;
+
+ memcpy(copy, value, size);
+
+ // replace old string
+ if (var->value) impl::xml_memory::deallocate(var->value);
+ var->value = copy;
+
+ return true;
+ }
+
+ PUGI__FN bool xpath_variable::set(const xpath_node_set& value)
+ {
+ if (_type != xpath_type_node_set) return false;
+
+ static_cast<impl::xpath_variable_node_set*>(this)->value = value;
+ return true;
+ }
+
+ PUGI__FN xpath_variable_set::xpath_variable_set()
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ _data[i] = 0;
+ }
+
+ PUGI__FN xpath_variable_set::~xpath_variable_set()
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ _destroy(_data[i]);
+ }
+
+ PUGI__FN xpath_variable_set::xpath_variable_set(const xpath_variable_set& rhs)
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ _data[i] = 0;
+
+ _assign(rhs);
+ }
+
+ PUGI__FN xpath_variable_set& xpath_variable_set::operator=(const xpath_variable_set& rhs)
+ {
+ if (this == &rhs) return *this;
+
+ _assign(rhs);
+
+ return *this;
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN xpath_variable_set::xpath_variable_set(xpath_variable_set&& rhs) PUGIXML_NOEXCEPT
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ {
+ _data[i] = rhs._data[i];
+ rhs._data[i] = 0;
+ }
+ }
+
+ PUGI__FN xpath_variable_set& xpath_variable_set::operator=(xpath_variable_set&& rhs) PUGIXML_NOEXCEPT
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ {
+ _destroy(_data[i]);
+
+ _data[i] = rhs._data[i];
+ rhs._data[i] = 0;
+ }
+
+ return *this;
+ }
+#endif
+
+ PUGI__FN void xpath_variable_set::_assign(const xpath_variable_set& rhs)
+ {
+ xpath_variable_set temp;
+
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ if (rhs._data[i] && !_clone(rhs._data[i], &temp._data[i]))
+ return;
+
+ _swap(temp);
+ }
+
+ PUGI__FN void xpath_variable_set::_swap(xpath_variable_set& rhs)
+ {
+ for (size_t i = 0; i < sizeof(_data) / sizeof(_data[0]); ++i)
+ {
+ xpath_variable* chain = _data[i];
+
+ _data[i] = rhs._data[i];
+ rhs._data[i] = chain;
+ }
+ }
+
+ PUGI__FN xpath_variable* xpath_variable_set::_find(const char_t* name) const
+ {
+ const size_t hash_size = sizeof(_data) / sizeof(_data[0]);
+ size_t hash = impl::hash_string(name) % hash_size;
+
+ // look for existing variable
+ for (xpath_variable* var = _data[hash]; var; var = var->_next)
+ if (impl::strequal(var->name(), name))
+ return var;
+
+ return 0;
+ }
+
+ PUGI__FN bool xpath_variable_set::_clone(xpath_variable* var, xpath_variable** out_result)
+ {
+ xpath_variable* last = 0;
+
+ while (var)
+ {
+ // allocate storage for new variable
+ xpath_variable* nvar = impl::new_xpath_variable(var->_type, var->name());
+ if (!nvar) return false;
+
+ // link the variable to the result immediately to handle failures gracefully
+ if (last)
+ last->_next = nvar;
+ else
+ *out_result = nvar;
+
+ last = nvar;
+
+ // copy the value; this can fail due to out-of-memory conditions
+ if (!impl::copy_xpath_variable(nvar, var)) return false;
+
+ var = var->_next;
+ }
+
+ return true;
+ }
+
+ PUGI__FN void xpath_variable_set::_destroy(xpath_variable* var)
+ {
+ while (var)
+ {
+ xpath_variable* next = var->_next;
+
+ impl::delete_xpath_variable(var->_type, var);
+
+ var = next;
+ }
+ }
+
+ PUGI__FN xpath_variable* xpath_variable_set::add(const char_t* name, xpath_value_type type)
+ {
+ const size_t hash_size = sizeof(_data) / sizeof(_data[0]);
+ size_t hash = impl::hash_string(name) % hash_size;
+
+ // look for existing variable
+ for (xpath_variable* var = _data[hash]; var; var = var->_next)
+ if (impl::strequal(var->name(), name))
+ return var->type() == type ? var : 0;
+
+ // add new variable
+ xpath_variable* result = impl::new_xpath_variable(type, name);
+
+ if (result)
+ {
+ result->_next = _data[hash];
+
+ _data[hash] = result;
+ }
+
+ return result;
+ }
+
+ PUGI__FN bool xpath_variable_set::set(const char_t* name, bool value)
+ {
+ xpath_variable* var = add(name, xpath_type_boolean);
+ return var ? var->set(value) : false;
+ }
+
+ PUGI__FN bool xpath_variable_set::set(const char_t* name, double value)
+ {
+ xpath_variable* var = add(name, xpath_type_number);
+ return var ? var->set(value) : false;
+ }
+
+ PUGI__FN bool xpath_variable_set::set(const char_t* name, const char_t* value)
+ {
+ xpath_variable* var = add(name, xpath_type_string);
+ return var ? var->set(value) : false;
+ }
+
+ PUGI__FN bool xpath_variable_set::set(const char_t* name, const xpath_node_set& value)
+ {
+ xpath_variable* var = add(name, xpath_type_node_set);
+ return var ? var->set(value) : false;
+ }
+
+ PUGI__FN xpath_variable* xpath_variable_set::get(const char_t* name)
+ {
+ return _find(name);
+ }
+
+ PUGI__FN const xpath_variable* xpath_variable_set::get(const char_t* name) const
+ {
+ return _find(name);
+ }
+
+ PUGI__FN xpath_query::xpath_query(const char_t* query, xpath_variable_set* variables): _impl(0)
+ {
+ impl::xpath_query_impl* qimpl = impl::xpath_query_impl::create();
+
+ if (!qimpl)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ _result.error = "Out of memory";
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+ else
+ {
+ using impl::auto_deleter; // MSVC7 workaround
+ auto_deleter<impl::xpath_query_impl> impl(qimpl, impl::xpath_query_impl::destroy);
+
+ qimpl->root = impl::xpath_parser::parse(query, variables, &qimpl->alloc, &_result);
+
+ if (qimpl->root)
+ {
+ qimpl->root->optimize(&qimpl->alloc);
+
+ _impl = impl.release();
+ _result.error = 0;
+ }
+ else
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ if (qimpl->oom) _result.error = "Out of memory";
+ #else
+ if (qimpl->oom) throw std::bad_alloc();
+ throw xpath_exception(_result);
+ #endif
+ }
+ }
+ }
+
+ PUGI__FN xpath_query::xpath_query(): _impl(0)
+ {
+ }
+
+ PUGI__FN xpath_query::~xpath_query()
+ {
+ if (_impl)
+ impl::xpath_query_impl::destroy(static_cast<impl::xpath_query_impl*>(_impl));
+ }
+
+#ifdef PUGIXML_HAS_MOVE
+ PUGI__FN xpath_query::xpath_query(xpath_query&& rhs) PUGIXML_NOEXCEPT
+ {
+ _impl = rhs._impl;
+ _result = rhs._result;
+ rhs._impl = 0;
+ rhs._result = xpath_parse_result();
+ }
+
+ PUGI__FN xpath_query& xpath_query::operator=(xpath_query&& rhs) PUGIXML_NOEXCEPT
+ {
+ if (this == &rhs) return *this;
+
+ if (_impl)
+ impl::xpath_query_impl::destroy(static_cast<impl::xpath_query_impl*>(_impl));
+
+ _impl = rhs._impl;
+ _result = rhs._result;
+ rhs._impl = 0;
+ rhs._result = xpath_parse_result();
+
+ return *this;
+ }
+#endif
+
+ PUGI__FN xpath_value_type xpath_query::return_type() const
+ {
+ if (!_impl) return xpath_type_none;
+
+ return static_cast<impl::xpath_query_impl*>(_impl)->root->rettype();
+ }
+
+ PUGI__FN bool xpath_query::evaluate_boolean(const xpath_node& n) const
+ {
+ if (!_impl) return false;
+
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ bool r = static_cast<impl::xpath_query_impl*>(_impl)->root->eval_boolean(c, sd.stack);
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return false;
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ return r;
+ }
+
+ PUGI__FN double xpath_query::evaluate_number(const xpath_node& n) const
+ {
+ if (!_impl) return impl::gen_nan();
+
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ double r = static_cast<impl::xpath_query_impl*>(_impl)->root->eval_number(c, sd.stack);
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return impl::gen_nan();
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ return r;
+ }
+
+#ifndef PUGIXML_NO_STL
+ PUGI__FN string_t xpath_query::evaluate_string(const xpath_node& n) const
+ {
+ if (!_impl) return string_t();
+
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ impl::xpath_string r = static_cast<impl::xpath_query_impl*>(_impl)->root->eval_string(c, sd.stack);
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return string_t();
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ return string_t(r.c_str(), r.length());
+ }
+#endif
+
+ PUGI__FN size_t xpath_query::evaluate_string(char_t* buffer, size_t capacity, const xpath_node& n) const
+ {
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ impl::xpath_string r = _impl ? static_cast<impl::xpath_query_impl*>(_impl)->root->eval_string(c, sd.stack) : impl::xpath_string();
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ r = impl::xpath_string();
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ size_t full_size = r.length() + 1;
+
+ if (capacity > 0)
+ {
+ size_t size = (full_size < capacity) ? full_size : capacity;
+ assert(size > 0);
+
+ memcpy(buffer, r.c_str(), (size - 1) * sizeof(char_t));
+ buffer[size - 1] = 0;
+ }
+
+ return full_size;
+ }
+
+ PUGI__FN xpath_node_set xpath_query::evaluate_node_set(const xpath_node& n) const
+ {
+ impl::xpath_ast_node* root = impl::evaluate_node_set_prepare(static_cast<impl::xpath_query_impl*>(_impl));
+ if (!root) return xpath_node_set();
+
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ impl::xpath_node_set_raw r = root->eval_node_set(c, sd.stack, impl::nodeset_eval_all);
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return xpath_node_set();
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ return xpath_node_set(r.begin(), r.end(), r.type());
+ }
+
+ PUGI__FN xpath_node xpath_query::evaluate_node(const xpath_node& n) const
+ {
+ impl::xpath_ast_node* root = impl::evaluate_node_set_prepare(static_cast<impl::xpath_query_impl*>(_impl));
+ if (!root) return xpath_node();
+
+ impl::xpath_context c(n, 1, 1);
+ impl::xpath_stack_data sd;
+
+ impl::xpath_node_set_raw r = root->eval_node_set(c, sd.stack, impl::nodeset_eval_first);
+
+ if (sd.oom)
+ {
+ #ifdef PUGIXML_NO_EXCEPTIONS
+ return xpath_node();
+ #else
+ throw std::bad_alloc();
+ #endif
+ }
+
+ return r.first();
+ }
+
+ PUGI__FN const xpath_parse_result& xpath_query::result() const
+ {
+ return _result;
+ }
+
+ PUGI__FN static void unspecified_bool_xpath_query(xpath_query***)
+ {
+ }
+
+ PUGI__FN xpath_query::operator xpath_query::unspecified_bool_type() const
+ {
+ return _impl ? unspecified_bool_xpath_query : 0;
+ }
+
+ PUGI__FN bool xpath_query::operator!() const
+ {
+ return !_impl;
+ }
+
+ PUGI__FN xpath_node xml_node::select_node(const char_t* query, xpath_variable_set* variables) const
+ {
+ xpath_query q(query, variables);
+ return q.evaluate_node(*this);
+ }
+
+ PUGI__FN xpath_node xml_node::select_node(const xpath_query& query) const
+ {
+ return query.evaluate_node(*this);
+ }
+
+ PUGI__FN xpath_node_set xml_node::select_nodes(const char_t* query, xpath_variable_set* variables) const
+ {
+ xpath_query q(query, variables);
+ return q.evaluate_node_set(*this);
+ }
+
+ PUGI__FN xpath_node_set xml_node::select_nodes(const xpath_query& query) const
+ {
+ return query.evaluate_node_set(*this);
+ }
+
+ PUGI__FN xpath_node xml_node::select_single_node(const char_t* query, xpath_variable_set* variables) const
+ {
+ xpath_query q(query, variables);
+ return q.evaluate_node(*this);
+ }
+
+ PUGI__FN xpath_node xml_node::select_single_node(const xpath_query& query) const
+ {
+ return query.evaluate_node(*this);
+ }
+}
+
+#endif
+
+#ifdef __BORLANDC__
+# pragma option pop
+#endif
+
+// Intel C++ does not properly keep warning state for function templates,
+// so popping warning state at the end of translation unit leads to warnings in the middle.
+#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
+# pragma warning(pop)
+#endif
+
+#if defined(_MSC_VER) && defined(__c2__)
+# pragma clang diagnostic pop
+#endif
+
+// Undefine all local macros (makes sure we're not leaking macros in header-only mode)
+#undef PUGI__NO_INLINE
+#undef PUGI__UNLIKELY
+#undef PUGI__STATIC_ASSERT
+#undef PUGI__DMC_VOLATILE
+#undef PUGI__UNSIGNED_OVERFLOW
+#undef PUGI__MSVC_CRT_VERSION
+#undef PUGI__SNPRINTF
+#undef PUGI__NS_BEGIN
+#undef PUGI__NS_END
+#undef PUGI__FN
+#undef PUGI__FN_NO_INLINE
+#undef PUGI__GETHEADER_IMPL
+#undef PUGI__GETPAGE_IMPL
+#undef PUGI__GETPAGE
+#undef PUGI__NODETYPE
+#undef PUGI__IS_CHARTYPE_IMPL
+#undef PUGI__IS_CHARTYPE
+#undef PUGI__IS_CHARTYPEX
+#undef PUGI__ENDSWITH
+#undef PUGI__SKIPWS
+#undef PUGI__OPTSET
+#undef PUGI__PUSHNODE
+#undef PUGI__POPNODE
+#undef PUGI__SCANFOR
+#undef PUGI__SCANWHILE
+#undef PUGI__SCANWHILE_UNROLL
+#undef PUGI__ENDSEG
+#undef PUGI__THROW_ERROR
+#undef PUGI__CHECK_ERROR
+
+#endif
+
+/**
+ * Copyright (c) 2006-2022 Arseny Kapoulkine
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
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