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| -rw-r--r-- | include/rtl/strbuf.hxx | 1131 |
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diff --git a/include/rtl/strbuf.hxx b/include/rtl/strbuf.hxx new file mode 100644 index 000000000..098e8b0bb --- /dev/null +++ b/include/rtl/strbuf.hxx @@ -0,0 +1,1131 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +/* + * This file is part of LibreOffice published API. + */ + +#pragma once + +#include "sal/config.h" + +#include <cassert> +#include <cstring> +#include <limits> + +#include "rtl/strbuf.h" +#include "rtl/string.hxx" +#include "rtl/stringutils.hxx" + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" +#include "rtl/stringconcat.hxx" +#include <string_view> +#include <type_traits> +#endif + +#ifdef RTL_STRING_UNITTEST +extern bool rtl_string_unittest_const_literal; +extern bool rtl_string_unittest_const_literal_function; +#endif + +// The unittest uses slightly different code to help check that the proper +// calls are made. The class is put into a different namespace to make +// sure the compiler generates a different (if generating also non-inline) +// copy of the function and does not merge them together. The class +// is "brought" into the proper rtl namespace by a typedef below. +#ifdef RTL_STRING_UNITTEST +#define rtl rtlunittest +#endif + +namespace rtl +{ + +/// @cond INTERNAL +#ifdef RTL_STRING_UNITTEST +#undef rtl +// helper macro to make functions appear more readable +#define RTL_STRING_CONST_FUNCTION rtl_string_unittest_const_literal_function = true; +#else +#define RTL_STRING_CONST_FUNCTION +#endif +/// @endcond + +/** A string buffer implements a mutable sequence of characters. + */ +class SAL_WARN_UNUSED OStringBuffer +{ +public: + /** + Constructs a string buffer with no characters in it and an + initial capacity of 16 characters. + */ + OStringBuffer() + : pData(NULL) + , nCapacity( 16 ) + { + rtl_string_new_WithLength( &pData, nCapacity ); + } + + /** + Allocates a new string buffer that contains the same sequence of + characters as the string buffer argument. + + @param value a <code>OStringBuffer</code>. + */ + OStringBuffer( const OStringBuffer & value ) + : pData(NULL) + , nCapacity( value.nCapacity ) + { + rtl_stringbuffer_newFromStringBuffer( &pData, value.nCapacity, value.pData ); + } + + /** + Constructs a string buffer with no characters in it and an + initial capacity specified by the <code>length</code> argument. + + @param length the initial capacity. + */ + explicit OStringBuffer(sal_Int32 length) + : pData(NULL) + , nCapacity( length ) + { + rtl_string_new_WithLength( &pData, length ); + } +#if defined LIBO_INTERNAL_ONLY + template<typename T> + explicit OStringBuffer(T length, std::enable_if_t<std::is_integral_v<T>, int> = 0) + : OStringBuffer(static_cast<sal_Int32>(length)) + { + assert( + length >= 0 + && static_cast<std::make_unsigned_t<T>>(length) + <= static_cast<std::make_unsigned_t<sal_Int32>>( + std::numeric_limits<sal_Int32>::max())); + } + // avoid (obvious) bugs + explicit OStringBuffer(bool) = delete; + explicit OStringBuffer(char) = delete; + explicit OStringBuffer(wchar_t) = delete; +#if defined __cpp_char8_t + explicit OStringBuffer(char8_t) = delete; +#endif + explicit OStringBuffer(char16_t) = delete; + explicit OStringBuffer(char32_t) = delete; +#endif + + /** + Constructs a string buffer so that it represents the same + sequence of characters as the string argument. + + The initial + capacity of the string buffer is <code>16</code> plus the length + of the string argument. + + @param value the initial string value. + */ +#if defined LIBO_INTERNAL_ONLY + OStringBuffer(std::string_view sv) + : pData(nullptr) + , nCapacity( sv.length() + 16 ) + { + if (sv.size() > sal_uInt32(std::numeric_limits<sal_Int32>::max())) { + throw std::bad_alloc(); + } + rtl_stringbuffer_newFromStr_WithLength( &pData, sv.data(), sv.length() ); + } +#else + OStringBuffer(const OString& value) + : pData(NULL) + , nCapacity( value.getLength() + 16 ) + { + rtl_stringbuffer_newFromStr_WithLength( &pData, value.getStr(), value.getLength() ); + } +#endif + + /** + @overload + @since LibreOffice 3.6 + */ + template< typename T > + OStringBuffer( const T& value, typename libreoffice_internal::CharPtrDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy()) + : pData(NULL) + { + sal_Int32 length = rtl_str_getLength( value ); + nCapacity = length + 16; + rtl_stringbuffer_newFromStr_WithLength( &pData, value, length ); + } + + template< typename T > + OStringBuffer( T& value, typename libreoffice_internal::NonConstCharArrayDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy()) + : pData(NULL) + { + sal_Int32 length = rtl_str_getLength( value ); + nCapacity = length + 16; + rtl_stringbuffer_newFromStr_WithLength( &pData, value, length ); + } + + /** + Constructs a string buffer so that it represents the same + sequence of characters as the string literal. + + If there are any embedded \0's in the string literal, the result is undefined. + Use the overload that explicitly accepts length. + + @since LibreOffice 3.6 + + @param literal a string literal + */ + template< typename T > + OStringBuffer( T& literal, typename libreoffice_internal::ConstCharArrayDetector< T, libreoffice_internal::Dummy >::Type = libreoffice_internal::Dummy()) + : pData(NULL) + , nCapacity( libreoffice_internal::ConstCharArrayDetector<T>::length + 16 ) + { + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + rtl_string_newFromLiteral( + &pData, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + libreoffice_internal::ConstCharArrayDetector<T>::length, 16); +#ifdef RTL_STRING_UNITTEST + rtl_string_unittest_const_literal = true; +#endif + } + + /** + Constructs a string buffer so that it represents the same + sequence of characters as the string argument. + + The initial + capacity of the string buffer is <code>16</code> plus length + + @param value a character array. + @param length the number of character which should be copied. + The character array length must be greater or + equal than this value. + */ + OStringBuffer(const char * value, sal_Int32 length) + : pData(NULL) + , nCapacity( length + 16 ) + { + rtl_stringbuffer_newFromStr_WithLength( &pData, value, length ); + } + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /** + @overload + @internal + */ + template< typename T1, typename T2 > + OStringBuffer( OStringConcat< T1, T2 >&& c ) + { + const sal_Int32 l = c.length(); + nCapacity = l + 16; + pData = rtl_string_alloc( nCapacity ); + char* end = c.addData( pData->buffer ); + *end = '\0'; + pData->length = l; + } + + /** + @overload + @internal + */ + template< typename T > + OStringBuffer( OStringNumber< T >&& n ) + : OStringBuffer( OString( n )) + {} +#endif + +#if defined LIBO_INTERNAL_ONLY + operator std::string_view() const { return {getStr(), sal_uInt32(getLength())}; } +#endif + + /** Assign to this a copy of value. + */ + OStringBuffer& operator = ( const OStringBuffer& value ) + { + if (this != &value) + { + rtl_stringbuffer_newFromStringBuffer(&pData, + value.nCapacity, + value.pData); + nCapacity = value.nCapacity; + } + return *this; + } + + /** Assign from a string. + + @since LibreOffice 5.3 + */ +#if defined LIBO_INTERNAL_ONLY + OStringBuffer & operator =(std::string_view string) { + sal_Int32 n = string.length(); + if (n >= nCapacity) { + ensureCapacity(n + 16); //TODO: check for overflow + } + std::memcpy(pData->buffer, string.data(), n); + pData->buffer[n] = '\0'; + pData->length = n; + return *this; + } +#else + OStringBuffer & operator =(OString const & string) { + sal_Int32 n = string.getLength(); + if (n >= nCapacity) { + ensureCapacity(n + 16); //TODO: check for overflow + } + std::memcpy(pData->buffer, string.pData->buffer, n + 1); + pData->length = n; + return *this; + } +#endif + + /** Assign from a string literal. + + @since LibreOffice 5.3 + */ + template<typename T> + typename + libreoffice_internal::ConstCharArrayDetector<T, OStringBuffer &>::Type + operator =(T & literal) { + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + sal_Int32 const n + = libreoffice_internal::ConstCharArrayDetector<T>::length; + if (n >= nCapacity) { + ensureCapacity(n + 16); //TODO: check for overflow + } + std::memcpy( + pData->buffer, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + n + 1); + pData->length = n; + return *this; + } + +#if defined LIBO_INTERNAL_ONLY + /** @overload @since LibreOffice 5.3 */ + template<typename T1, typename T2> + OStringBuffer & operator =(OStringConcat<T1, T2> && concat) { + sal_Int32 const n = concat.length(); + if (n >= nCapacity) { + ensureCapacity(n + 16); //TODO: check for overflow + } + *concat.addData(pData->buffer) = 0; + pData->length = n; + return *this; + } + + /** @overload @internal */ + template<typename T> + OStringBuffer & operator =(OStringNumber<T> && n) + { + *this = OStringBuffer( std::move ( n )); + return *this; + } +#endif + + /** + Release the string data. + */ + ~OStringBuffer() + { + rtl_string_release( pData ); + } + + /** + Fill the string data in the new string and clear the buffer. + + This method is more efficient than the constructor of the string. It does + not copy the buffer. + + @return the string previously contained in the buffer. + */ + SAL_WARN_UNUSED_RESULT OString makeStringAndClear() + { + OString aRet( pData ); + rtl_string_new(&pData); + nCapacity = 0; + return aRet; + } + + /** + Returns the length (character count) of this string buffer. + + @return the number of characters in this string buffer. + */ + sal_Int32 getLength() const + { + return pData->length; + } + + /** + Checks if a string buffer is empty. + + @return true if the string buffer is empty; + false, otherwise. + + @since LibreOffice 4.1 + */ + bool isEmpty() const + { + return pData->length == 0; + } + + /** + Returns the current capacity of the String buffer. + + The capacity + is the amount of storage available for newly inserted + characters. The real buffer size is 2 bytes longer, because + all strings are 0 terminated. + + @return the current capacity of this string buffer. + */ + sal_Int32 getCapacity() const + { + return nCapacity; + } + + /** + Ensures that the capacity of the buffer is at least equal to the + specified minimum. + + The new capacity will be at least as large as the maximum of the current + length (so that no contents of the buffer is destroyed) and the given + minimumCapacity. If the given minimumCapacity is negative, nothing is + changed. + + @param minimumCapacity the minimum desired capacity. + */ + void ensureCapacity(sal_Int32 minimumCapacity) + { + rtl_stringbuffer_ensureCapacity( &pData, &nCapacity, minimumCapacity ); + } + + /** + Sets the length of this String buffer. + + If the <code>newLength</code> argument is less than the current + length of the string buffer, the string buffer is truncated to + contain exactly the number of characters given by the + <code>newLength</code> argument. + <p> + If the <code>newLength</code> argument is greater than or equal + to the current length, sufficient null characters + (<code>'\u0000'</code>) are appended to the string buffer so that + length becomes the <code>newLength</code> argument. + <p> + The <code>newLength</code> argument must be greater than or equal + to <code>0</code>. + + @param newLength the new length of the buffer. + */ + void setLength(sal_Int32 newLength) + { + assert(newLength >= 0); + // Avoid modifications if pData points to const empty string: + if( newLength != pData->length ) + { + if( newLength > nCapacity ) + rtl_stringbuffer_ensureCapacity(&pData, &nCapacity, newLength); + else + pData->buffer[newLength] = '\0'; + pData->length = newLength; + } + } + + /** + Returns the character at a specific index in this string buffer. + + The first character of a string buffer is at index + <code>0</code>, the next at index <code>1</code>, and so on, for + array indexing. + <p> + The index argument must be greater than or equal to + <code>0</code>, and less than the length of this string buffer. + + @param index the index of the desired character. + @return the character at the specified index of this string buffer. + */ + SAL_DEPRECATED("use rtl::OStringBuffer::operator [] instead") + char charAt( sal_Int32 index ) + { + assert(index >= 0 && index < pData->length); + return pData->buffer[ index ]; + } + + /** + The character at the specified index of this string buffer is set + to <code>ch</code>. + + The index argument must be greater than or equal to + <code>0</code>, and less than the length of this string buffer. + + @param index the index of the character to modify. + @param ch the new character. + */ + SAL_DEPRECATED("use rtl::OStringBuffer::operator [] instead") + OStringBuffer & setCharAt(sal_Int32 index, char ch) + { + assert(index >= 0 && index < pData->length); + pData->buffer[ index ] = ch; + return *this; + } + + /** + Return a null terminated character array. + */ + const char* getStr() const SAL_RETURNS_NONNULL { return pData->buffer; } + + /** + Access to individual characters. + + @param index must be non-negative and less than length. + + @return a reference to the character at the given index. + + @since LibreOffice 3.5 + */ + char & operator [](sal_Int32 index) + { + assert(index >= 0 && index < pData->length); + return pData->buffer[index]; + } + + /** + Return an OString instance reflecting the current content + of this OStringBuffer. + */ + OString toString() const + { + return OString(pData->buffer, pData->length); + } + +#if !defined LIBO_INTERNAL_ONLY + /** + Appends the string to this string buffer. + + The characters of the <code>String</code> argument are appended, in + order, to the contents of this string buffer, increasing the + length of this string buffer by the length of the argument. + + @param str a string. + @return this string buffer. + */ + OStringBuffer & append(const OString &str) + { + return append( str.getStr(), str.getLength() ); + } +#endif + + /** + Appends the string representation of the <code>char</code> array + argument to this string buffer. + + The characters of the array argument are appended, in order, to + the contents of this string buffer. The length of this string + buffer increases by the length of the argument. + + @param str the characters to be appended. + @return this string buffer. + */ + template< typename T > + typename libreoffice_internal::CharPtrDetector< T, OStringBuffer& >::Type append( const T& str ) + { + return append( str, rtl_str_getLength( str ) ); + } + + template< typename T > + typename libreoffice_internal::NonConstCharArrayDetector< T, OStringBuffer& >::Type append( T& str ) + { + return append( str, rtl_str_getLength( str ) ); + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, OStringBuffer& >::Type append( T& literal ) + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return append( + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + libreoffice_internal::ConstCharArrayDetector<T>::length); + } + + /** + Appends the string representation of the <code>char</code> array + argument to this string buffer. + + Characters of the character array <code>str</code> are appended, + in order, to the contents of this string buffer. The length of this + string buffer increases by the value of <code>len</code>. + + @param str the characters to be appended; must be non-null, and must + point to at least len characters + @param len the number of characters to append; must be non-negative + @return this string buffer. + */ + OStringBuffer & append( const char * str, sal_Int32 len) + { + assert( len == 0 || str != NULL ); // cannot assert that in rtl_stringbuffer_insert + rtl_stringbuffer_insert( &pData, &nCapacity, getLength(), str, len ); + return *this; + } + +#ifdef LIBO_INTERNAL_ONLY // "RTL_FAST_STRING" + /** + @overload + @internal + */ + template< typename T1, typename T2 > + OStringBuffer& append( OStringConcat< T1, T2 >&& c ) + { + sal_Int32 l = c.length(); + if( l == 0 ) + return *this; + l += pData->length; + rtl_stringbuffer_ensureCapacity( &pData, &nCapacity, l ); + char* end = c.addData( pData->buffer + pData->length ); + *end = '\0'; + pData->length = l; + return *this; + } + + /** + @overload + @internal + */ + template< typename T > + OStringBuffer& append( OStringNumber< T >&& c ) + { + return append( c.buf, c.length ); + } + + /** + @overload + @internal + */ + OStringBuffer& append( std::string_view s ) + { + return append( s.data(), s.size() ); + } + +#endif + + /** + Appends the string representation of the <code>sal_Bool</code> + argument to the string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param b a <code>sal_Bool</code>. + @return this string buffer. + */ + OStringBuffer & append(sal_Bool b) + { + char sz[RTL_STR_MAX_VALUEOFBOOLEAN]; + return append( sz, rtl_str_valueOfBoolean( sz, b ) ); + } + + /** + Appends the string representation of the <code>bool</code> + argument to the string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param b a <code>bool</code>. + @return this string buffer. + + @since LibreOffice 4.3 + */ + OStringBuffer & append(bool b) + { + char sz[RTL_STR_MAX_VALUEOFBOOLEAN]; + return append( sz, rtl_str_valueOfBoolean( sz, b ) ); + } + + /// @cond INTERNAL + // Pointer can be automatically converted to bool, which is unwanted here. + // Explicitly delete all pointer append() overloads to prevent this + // (except for char* overload, which is handled elsewhere). + template< typename T > + typename libreoffice_internal::Enable< void, + !libreoffice_internal::CharPtrDetector< T* >::ok >::Type + append( T* ) SAL_DELETED_FUNCTION; + /// @endcond + + /** + Appends the string representation of the <code>char</code> + argument to this string buffer. + + The argument is appended to the contents of this string buffer. + The length of this string buffer increases by <code>1</code>. + + @param c a <code>char</code>. + @return this string buffer. + */ + OStringBuffer & append(char c) + { + return append( &c, 1 ); + } + + /** + Appends the string representation of the <code>sal_Int32</code> + argument to this string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param i an <code>sal_Int32</code>. + @param radix the radix + @return this string buffer. + */ + OStringBuffer & append(sal_Int32 i, sal_Int16 radix = 10 ) + { + char sz[RTL_STR_MAX_VALUEOFINT32]; + return append( sz, rtl_str_valueOfInt32( sz, i, radix ) ); + } + + /** + Appends the string representation of the <code>long</code> + argument to this string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param l a <code>long</code>. + @param radix the radix + @return this string buffer. + */ + OStringBuffer & append(sal_Int64 l, sal_Int16 radix = 10 ) + { + char sz[RTL_STR_MAX_VALUEOFINT64]; + return append( sz, rtl_str_valueOfInt64( sz, l, radix ) ); + } + + /** + Appends the string representation of the <code>float</code> + argument to this string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param f a <code>float</code>. + @return this string buffer. + */ + OStringBuffer & append(float f) + { + char sz[RTL_STR_MAX_VALUEOFFLOAT]; + return append( sz, rtl_str_valueOfFloat( sz, f ) ); + } + + /** + Appends the string representation of the <code>double</code> + argument to this string buffer. + + The argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then appended to this string buffer. + + @param d a <code>double</code>. + @return this string buffer. + */ + OStringBuffer & append(double d) + { + char sz[RTL_STR_MAX_VALUEOFDOUBLE]; + return append( sz, rtl_str_valueOfDouble( sz, d ) ); + } + + /** + Unsafe way to make space for a fixed amount of characters to be appended + into this OStringBuffer. + + A call to this function must immediately be followed by code that + completely fills the uninitialized block pointed to by the return value. + + @param length the length of the uninitialized block of char entities; + must be non-negative + + @return a pointer to the start of the uninitialized block; only valid + until this OStringBuffer's capacity changes + + @since LibreOffice 4.4 + */ + char * appendUninitialized(sal_Int32 length) SAL_RETURNS_NONNULL { + sal_Int32 n = getLength(); + rtl_stringbuffer_insert(&pData, &nCapacity, n, NULL, length); + return pData->buffer + n; + } + + /** + Inserts the string into this string buffer. + + The characters of the <code>String</code> argument are inserted, in + order, into this string buffer at the indicated offset. The length + of this string buffer is increased by the length of the argument. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param str a string. + @return this string buffer. + */ +#if defined LIBO_INTERNAL_ONLY + OStringBuffer & insert(sal_Int32 offset, std::string_view str) + { + return insert( offset, str.data(), str.length() ); + } +#else + OStringBuffer & insert(sal_Int32 offset, const OString & str) + { + return insert( offset, str.getStr(), str.getLength() ); + } +#endif + + /** + Inserts the string representation of the <code>char</code> array + argument into this string buffer. + + The characters of the array argument are inserted into the + contents of this string buffer at the position indicated by + <code>offset</code>. The length of this string buffer increases by + the length of the argument. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param str a character array. + @return this string buffer. + */ + template< typename T > + typename libreoffice_internal::CharPtrDetector< T, OStringBuffer& >::Type insert( sal_Int32 offset, const T& str ) + { + return insert( offset, str, rtl_str_getLength( str ) ); + } + + template< typename T > + typename libreoffice_internal::NonConstCharArrayDetector< T, OStringBuffer& >::Type insert( sal_Int32 offset, T& str ) + { + return insert( offset, str, rtl_str_getLength( str ) ); + } + + /** + @overload + This function accepts an ASCII string literal as its argument. + @since LibreOffice 3.6 + */ + template< typename T > + typename libreoffice_internal::ConstCharArrayDetector< T, OStringBuffer& >::Type insert( sal_Int32 offset, T& literal ) + { + RTL_STRING_CONST_FUNCTION + assert( + libreoffice_internal::ConstCharArrayDetector<T>::isValid(literal)); + return insert( + offset, + libreoffice_internal::ConstCharArrayDetector<T>::toPointer(literal), + libreoffice_internal::ConstCharArrayDetector<T>::length); + } + + /** + Inserts the string representation of the <code>char</code> array + argument into this string buffer. + + The characters of the array argument are inserted into the + contents of this string buffer at the position indicated by + <code>offset</code>. The length of this string buffer increases by + the length of the argument. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param str a character array. + @param len the number of characters to append. + @return this string buffer. + */ + OStringBuffer & insert( sal_Int32 offset, const char * str, sal_Int32 len) + { + assert( len == 0 || str != NULL ); // cannot assert that in rtl_stringbuffer_insert + rtl_stringbuffer_insert( &pData, &nCapacity, offset, str, len ); + return *this; + } + + /** + Inserts the string representation of the <code>sal_Bool</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param b a <code>sal_Bool</code>. + @return this string buffer. + */ + OStringBuffer & insert(sal_Int32 offset, sal_Bool b) + { + char sz[RTL_STR_MAX_VALUEOFBOOLEAN]; + return insert( offset, sz, rtl_str_valueOfBoolean( sz, b ) ); + } + + /** + Inserts the string representation of the <code>bool</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>OString::boolean</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param b a <code>bool</code>. + @return this string buffer. + + @since LibreOffice 4.3 + */ + OStringBuffer & insert(sal_Int32 offset, bool b) + { + char sz[RTL_STR_MAX_VALUEOFBOOLEAN]; + return insert( offset, sz, rtl_str_valueOfBoolean( sz, b ) ); + } + + /** + Inserts the string representation of the <code>char</code> + argument into this string buffer. + + The second argument is inserted into the contents of this string + buffer at the position indicated by <code>offset</code>. The length + of this string buffer increases by one. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param c a <code>char</code>. + @return this string buffer. + */ + OStringBuffer & insert(sal_Int32 offset, char c) + { + return insert( offset, &c, 1 ); + } + + /** + Inserts the string representation of the second <code>sal_Int32</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param i an <code>sal_Int32</code>. + @param radix the radix + @return this string buffer. + */ + OStringBuffer & insert(sal_Int32 offset, sal_Int32 i, sal_Int16 radix = 10 ) + { + char sz[RTL_STR_MAX_VALUEOFINT32]; + return insert( offset, sz, rtl_str_valueOfInt32( sz, i, radix ) ); + } + + /** + Inserts the string representation of the <code>long</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param l a <code>long</code>. + @param radix the radix + @return this string buffer. + */ + OStringBuffer & insert(sal_Int32 offset, sal_Int64 l, sal_Int16 radix = 10 ) + { + char sz[RTL_STR_MAX_VALUEOFINT64]; + return insert( offset, sz, rtl_str_valueOfInt64( sz, l, radix ) ); + } + + /** + Inserts the string representation of the <code>float</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param f a <code>float</code>. + @return this string buffer. + */ + OStringBuffer insert(sal_Int32 offset, float f) + { + char sz[RTL_STR_MAX_VALUEOFFLOAT]; + return insert( offset, sz, rtl_str_valueOfFloat( sz, f ) ); + } + + /** + Inserts the string representation of the <code>double</code> + argument into this string buffer. + + The second argument is converted to a string as if by the method + <code>String.valueOf</code>, and the characters of that + string are then inserted into this string buffer at the indicated + offset. + <p> + The offset argument must be greater than or equal to + <code>0</code>, and less than or equal to the length of this + string buffer. + + @param offset the offset. + @param d a <code>double</code>. + @return this string buffer. + */ + OStringBuffer & insert(sal_Int32 offset, double d) + { + char sz[RTL_STR_MAX_VALUEOFDOUBLE]; + return insert( offset, sz, rtl_str_valueOfDouble( sz, d ) ); + } + + /** + Removes the characters in a substring of this sequence. + + The substring begins at the specified <code>start</code> and + is <code>len</code> characters long. + + start must be >= 0 && <= getLength() && <= end + + @param start The beginning index, inclusive + @param len The substring length + @return this string buffer. + */ + OStringBuffer & remove( sal_Int32 start, sal_Int32 len ) + { + rtl_stringbuffer_remove( &pData, start, len ); + return *this; + } + + /** Allows access to the internal data of this OStringBuffer, for effective + manipulation. + + This function should be used with care. After you have called this + function, you may use the returned pInternalData and pInternalCapacity + only as long as you make no other calls on this OStringBuffer. + + @param pInternalData + This output parameter receives a pointer to the internal data + (rtl_String pointer). pInternalData itself must not be null. + + @param pInternalCapacity + This output parameter receives a pointer to the internal capacity. + pInternalCapacity itself must not be null. + + @since LibreOffice 5.4 + */ + void accessInternals( + rtl_String *** pInternalData, sal_Int32 ** pInternalCapacity) + { + *pInternalData = &pData; + *pInternalCapacity = &nCapacity; + } + +private: + /** + A pointer to the data structure which contains the data. + */ + rtl_String * pData; + + /** + The len of the pData->buffer. + */ + sal_Int32 nCapacity; +}; + +#if defined LIBO_INTERNAL_ONLY +template<> struct ToStringHelper<OStringBuffer> { + static std::size_t length(OStringBuffer const & s) { return s.getLength(); } + + static char * addData(char * buffer, OStringBuffer const & s) SAL_RETURNS_NONNULL + { return addDataHelper(buffer, s.getStr(), s.getLength()); } + + static constexpr bool allowOStringConcat = true; + static constexpr bool allowOUStringConcat = false; +}; +#endif + +} + +#ifdef RTL_STRING_UNITTEST +namespace rtl +{ +typedef rtlunittest::OStringBuffer OStringBuffer; +} +#undef RTL_STRING_CONST_FUNCTION +#endif + +#if defined LIBO_INTERNAL_ONLY && !defined RTL_STRING_UNITTEST +using ::rtl::OStringBuffer; +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |