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-rw-r--r--src/xml/repr-io.cpp1075
1 files changed, 1075 insertions, 0 deletions
diff --git a/src/xml/repr-io.cpp b/src/xml/repr-io.cpp
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index 0000000..d891f07
--- /dev/null
+++ b/src/xml/repr-io.cpp
@@ -0,0 +1,1075 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Dirty DOM-like tree
+ *
+ * Authors:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * bulia byak <buliabyak@users.sf.net>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+#include <stdexcept>
+
+#include <libxml/parser.h>
+#include <libxml/xinclude.h>
+
+#include "xml/repr.h"
+#include "xml/attribute-record.h"
+#include "xml/rebase-hrefs.h"
+#include "xml/simple-document.h"
+#include "xml/text-node.h"
+#include "xml/node.h"
+
+#include "io/sys.h"
+#include "io/stream/stringstream.h"
+#include "io/stream/gzipstream.h"
+#include "io/stream/uristream.h"
+
+#include "extension/extension.h"
+
+#include "attribute-rel-util.h"
+#include "attribute-sort-util.h"
+
+#include "preferences.h"
+
+#include <glibmm/miscutils.h>
+
+using Inkscape::IO::Writer;
+using Inkscape::XML::Document;
+using Inkscape::XML::SimpleDocument;
+using Inkscape::XML::Node;
+using Inkscape::XML::AttributeRecord;
+using Inkscape::XML::AttributeVector;
+using Inkscape::XML::rebase_href_attrs;
+
+Document *sp_repr_do_read (xmlDocPtr doc, const gchar *default_ns);
+static Node *sp_repr_svg_read_node (Document *xml_doc, xmlNodePtr node, const gchar *default_ns, std::map<std::string, std::string> &prefix_map);
+static gint sp_repr_qualified_name (gchar *p, gint len, xmlNsPtr ns, const xmlChar *name, const gchar *default_ns, std::map<std::string, std::string> &prefix_map);
+static void sp_repr_write_stream_root_element(Node *repr, Writer &out,
+ bool add_whitespace, gchar const *default_ns,
+ int inlineattrs, int indent,
+ gchar const *old_href_abs_base,
+ gchar const *new_href_abs_base);
+
+static void sp_repr_write_stream_element(Node *repr, Writer &out,
+ gint indent_level, bool add_whitespace,
+ Glib::QueryQuark elide_prefix,
+ const AttributeVector & attributes,
+ int inlineattrs, int indent,
+ gchar const *old_href_abs_base,
+ gchar const *new_href_abs_base);
+
+
+class XmlSource
+{
+public:
+ XmlSource()
+ : filename(nullptr),
+ encoding(nullptr),
+ fp(nullptr),
+ firstFewLen(0),
+ LoadEntities(false),
+ cachedData(),
+ cachedPos(0),
+ instr(nullptr),
+ gzin(nullptr)
+ {
+ for (unsigned char & k : firstFew)
+ {
+ k=0;
+ }
+ }
+ virtual ~XmlSource()
+ {
+ close();
+ if ( encoding ) {
+ g_free(encoding);
+ encoding = nullptr;
+ }
+ }
+
+ int setFile( char const * filename, bool load_entities );
+
+ xmlDocPtr readXml();
+
+ static int readCb( void * context, char * buffer, int len );
+ static int closeCb( void * context );
+
+ char const* getEncoding() const { return encoding; }
+ int read( char * buffer, int len );
+ int close();
+private:
+ const char* filename;
+ char* encoding;
+ FILE* fp;
+ unsigned char firstFew[4];
+ int firstFewLen;
+ bool LoadEntities; // Checks for SYSTEM Entities (requires cached data)
+ std::string cachedData;
+ unsigned int cachedPos;
+ Inkscape::IO::FileInputStream* instr;
+ Inkscape::IO::GzipInputStream* gzin;
+};
+
+int XmlSource::setFile(char const *filename, bool load_entities=false)
+{
+ int retVal = -1;
+
+ this->filename = filename;
+
+ fp = Inkscape::IO::fopen_utf8name(filename, "r");
+ if ( fp ) {
+ // First peek in the file to see what it is
+ memset( firstFew, 0, sizeof(firstFew) );
+
+ size_t some = fread( firstFew, 1, 4, fp );
+ if ( fp ) {
+ // first check for compression
+ if ( (some >= 2) && (firstFew[0] == 0x1f) && (firstFew[1] == 0x8b) ) {
+ //g_message(" the file being read is gzip'd. extract it");
+ fclose(fp);
+ fp = nullptr;
+ fp = Inkscape::IO::fopen_utf8name(filename, "r");
+ instr = new Inkscape::IO::FileInputStream(fp);
+ gzin = new Inkscape::IO::GzipInputStream(*instr);
+
+ memset( firstFew, 0, sizeof(firstFew) );
+ some = 0;
+ int single = 0;
+ while ( some < 4 && single >= 0 )
+ {
+ single = gzin->get();
+ if ( single >= 0 ) {
+ firstFew[some++] = 0x0ff & single;
+ } else {
+ break;
+ }
+ }
+ }
+
+ int encSkip = 0;
+ if ( (some >= 2) &&(firstFew[0] == 0xfe) && (firstFew[1] == 0xff) ) {
+ encoding = g_strdup("UTF-16BE");
+ encSkip = 2;
+ } else if ( (some >= 2) && (firstFew[0] == 0xff) && (firstFew[1] == 0xfe) ) {
+ encoding = g_strdup("UTF-16LE");
+ encSkip = 2;
+ } else if ( (some >= 3) && (firstFew[0] == 0xef) && (firstFew[1] == 0xbb) && (firstFew[2] == 0xbf) ) {
+ encoding = g_strdup("UTF-8");
+ encSkip = 3;
+ }
+
+ if ( encSkip ) {
+ memmove( firstFew, firstFew + encSkip, (some - encSkip) );
+ some -= encSkip;
+ }
+
+ firstFewLen = some;
+ retVal = 0; // no error
+ }
+ }
+ if(load_entities) {
+ this->cachedData = std::string("");
+ this->cachedPos = 0;
+
+ // First get data from file in typical way (cache it all)
+ char *buffer = new char [4096];
+ while(true) {
+ int len = this->read(buffer, 4096);
+ if(len <= 0) break;
+ buffer[len] = 0;
+ this->cachedData += buffer;
+ }
+ delete[] buffer;
+
+ // Check for SYSTEM or PUBLIC entities and remove them from the cache
+ GMatchInfo *info;
+ gint start, end;
+
+ GRegex *regex = g_regex_new(
+ "<!ENTITY\\s+[^>\\s]+\\s+(SYSTEM|PUBLIC\\s+\"[^>\"]+\")\\s+\"[^>\"]+\"\\s*>",
+ G_REGEX_CASELESS, G_REGEX_MATCH_NEWLINE_ANY, nullptr);
+
+ g_regex_match (regex, this->cachedData.c_str(), G_REGEX_MATCH_NEWLINE_ANY, &info);
+
+ while (g_match_info_matches (info)) {
+ if (g_match_info_fetch_pos (info, 1, &start, &end))
+ this->cachedData.erase(start, end - start);
+ g_match_info_next (info, nullptr);
+ }
+ g_match_info_free(info);
+ g_regex_unref(regex);
+ }
+ // Do this after loading cache, so reads don't return cache to fill cache.
+ this->LoadEntities = load_entities;
+ return retVal;
+}
+
+xmlDocPtr XmlSource::readXml()
+{
+ int parse_options = XML_PARSE_HUGE | XML_PARSE_RECOVER;
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool allowNetAccess = prefs->getBool("/options/externalresources/xml/allow_net_access", false);
+ if (!allowNetAccess) parse_options |= XML_PARSE_NONET;
+
+ // Allow NOENT only if we're filtering out SYSTEM and PUBLIC entities
+ if (LoadEntities) parse_options |= XML_PARSE_NOENT;
+
+ auto doc = xmlReadIO( readCb, closeCb, this,
+ filename, getEncoding(), parse_options);
+
+ if (doc && doc->properties && xmlXIncludeProcessFlags(doc, XML_PARSE_NOXINCNODE) < 0) {
+ g_warning("XInclude processing failed for %s", filename);
+ }
+
+ return doc;
+}
+
+int XmlSource::readCb( void * context, char * buffer, int len )
+{
+ int retVal = -1;
+
+ if ( context ) {
+ XmlSource* self = static_cast<XmlSource*>(context);
+ retVal = self->read( buffer, len );
+ }
+ return retVal;
+}
+
+int XmlSource::closeCb(void * context)
+{
+ if ( context ) {
+ XmlSource* self = static_cast<XmlSource*>(context);
+ self->close();
+ }
+ return 0;
+}
+
+int XmlSource::read( char *buffer, int len )
+{
+ int retVal = 0;
+ size_t got = 0;
+
+ if ( LoadEntities ) {
+ if (cachedPos >= cachedData.length()) {
+ return -1;
+ } else {
+ retVal = cachedData.copy(buffer, len, cachedPos);
+ cachedPos += retVal;
+ return retVal; // Do NOT continue.
+ }
+ } else if ( firstFewLen > 0 ) {
+ int some = (len < firstFewLen) ? len : firstFewLen;
+ memcpy( buffer, firstFew, some );
+ if ( len < firstFewLen ) {
+ memmove( firstFew, firstFew + some, (firstFewLen - some) );
+ }
+ firstFewLen -= some;
+ got = some;
+ } else if ( gzin ) {
+ int single = 0;
+ while ( (static_cast<int>(got) < len) && (single >= 0) )
+ {
+ single = gzin->get();
+ if ( single >= 0 ) {
+ buffer[got++] = 0x0ff & single;
+ } else {
+ break;
+ }
+ }
+ } else {
+ got = fread( buffer, 1, len, fp );
+ }
+
+ if ( feof(fp) ) {
+ retVal = got;
+ } else if ( ferror(fp) ) {
+ retVal = -1;
+ } else {
+ retVal = got;
+ }
+
+ return retVal;
+}
+
+int XmlSource::close()
+{
+ if ( gzin ) {
+ gzin->close();
+ delete gzin;
+ gzin = nullptr;
+ }
+ if ( instr ) {
+ instr->close();
+ fp = nullptr;
+ delete instr;
+ instr = nullptr;
+ }
+ if ( fp ) {
+ fclose(fp);
+ fp = nullptr;
+ }
+ return 0;
+}
+
+/**
+ * Reads XML from a file, and returns the Document.
+ * The default namespace can also be specified, if desired.
+ */
+Document *sp_repr_read_file (const gchar * filename, const gchar *default_ns)
+{
+ xmlDocPtr doc = nullptr;
+ Document * rdoc = nullptr;
+
+ xmlSubstituteEntitiesDefault(1);
+
+ g_return_val_if_fail(filename != nullptr, NULL);
+ if (!Inkscape::IO::file_test(filename, G_FILE_TEST_EXISTS)) {
+ g_warning("Can't open file: %s (doesn't exist)", filename);
+ return nullptr;
+ }
+ /* fixme: A file can disappear at any time, including between now and when we actually try to
+ * open it. Get rid of the above test once we're sure that we correctly handle
+ * non-existence. */
+
+ // TODO: bulia, please look over
+ gsize bytesRead = 0;
+ gsize bytesWritten = 0;
+ GError* error = nullptr;
+ // TODO: need to replace with our own fopen and reading
+ gchar* localFilename = g_filename_from_utf8(filename, -1, &bytesRead, &bytesWritten, &error);
+ g_return_val_if_fail(localFilename != nullptr, NULL);
+
+ Inkscape::IO::dump_fopen_call(filename, "N");
+
+ XmlSource src;
+
+ if (src.setFile(filename) == 0) {
+ doc = src.readXml();
+ rdoc = sp_repr_do_read(doc, default_ns);
+ // For some reason, failed ns loading results in this
+ // We try a system check version of load with NOENT for adobe
+ if (rdoc && strcmp(rdoc->root()->name(), "ns:svg") == 0) {
+ xmlFreeDoc(doc);
+ src.setFile(filename, true);
+ doc = src.readXml();
+ rdoc = sp_repr_do_read(doc, default_ns);
+ }
+ }
+
+ if (doc) {
+ xmlFreeDoc(doc);
+ }
+
+ if (localFilename) {
+ g_free(localFilename);
+ }
+
+ return rdoc;
+}
+
+/**
+ * Reads and parses XML from a buffer, returning it as an Document
+ */
+Document *sp_repr_read_mem (const gchar * buffer, gint length, const gchar *default_ns)
+{
+ xmlDocPtr doc;
+ Document * rdoc;
+
+ xmlSubstituteEntitiesDefault(1);
+
+ g_return_val_if_fail (buffer != nullptr, NULL);
+
+ int parser_options = XML_PARSE_HUGE | XML_PARSE_RECOVER;
+ parser_options |= XML_PARSE_NONET; // TODO: should we allow network access?
+ // proper solution would be to check the preference "/options/externalresources/xml/allow_net_access"
+ // as done in XmlSource::readXml which gets called by the analogous sp_repr_read_file()
+ // but sp_repr_read_mem() seems to be called in locations where Inkscape::Preferences::get() fails badly
+ doc = xmlReadMemory (const_cast<gchar *>(buffer), length, nullptr, nullptr, parser_options);
+
+ rdoc = sp_repr_do_read (doc, default_ns);
+ if (doc) {
+ xmlFreeDoc (doc);
+ }
+ return rdoc;
+}
+
+/**
+ * Reads and parses XML from a buffer, returning it as an Document
+ */
+Document *sp_repr_read_buf (const Glib::ustring &buf, const gchar *default_ns)
+{
+ return sp_repr_read_mem(buf.c_str(), buf.size(), default_ns);
+}
+
+
+namespace Inkscape {
+
+struct compare_quark_ids {
+ bool operator()(Glib::QueryQuark const &a, Glib::QueryQuark const &b) const {
+ return a.id() < b.id();
+ }
+};
+
+}
+
+namespace {
+
+typedef std::map<Glib::QueryQuark, Glib::QueryQuark, Inkscape::compare_quark_ids> PrefixMap;
+
+Glib::QueryQuark qname_prefix(Glib::QueryQuark qname) {
+ static PrefixMap prefix_map;
+ PrefixMap::iterator iter = prefix_map.find(qname);
+ if ( iter != prefix_map.end() ) {
+ return (*iter).second;
+ } else {
+ gchar const *name_string=g_quark_to_string(qname);
+ gchar const *prefix_end=strchr(name_string, ':');
+ if (prefix_end) {
+ Glib::Quark prefix=Glib::ustring(name_string, prefix_end);
+ prefix_map.insert(PrefixMap::value_type(qname, prefix));
+ return prefix;
+ } else {
+ return GQuark(0);
+ }
+ }
+}
+
+}
+
+namespace {
+
+void promote_to_namespace(Node *repr, const gchar *prefix) {
+ if ( repr->type() == Inkscape::XML::NodeType::ELEMENT_NODE ) {
+ GQuark code = repr->code();
+ if (!qname_prefix(code).id()) {
+ gchar *svg_name = g_strconcat(prefix, ":", g_quark_to_string(code), nullptr);
+ repr->setCodeUnsafe(g_quark_from_string(svg_name));
+ g_free(svg_name);
+ }
+ for ( Node *child = repr->firstChild() ; child ; child = child->next() ) {
+ promote_to_namespace(child, prefix);
+ }
+ }
+}
+
+}
+
+/**
+ * Reads in a XML file to create a Document
+ */
+Document *sp_repr_do_read (xmlDocPtr doc, const gchar *default_ns)
+{
+ if (doc == nullptr) {
+ return nullptr;
+ }
+ xmlNodePtr node=xmlDocGetRootElement (doc);
+ if (node == nullptr) {
+ return nullptr;
+ }
+
+ std::map<std::string, std::string> prefix_map;
+
+ Document *rdoc = new Inkscape::XML::SimpleDocument();
+
+ Node *root=nullptr;
+ for ( node = doc->children ; node != nullptr ; node = node->next ) {
+ if (node->type == XML_ELEMENT_NODE) {
+ Node *repr=sp_repr_svg_read_node(rdoc, node, default_ns, prefix_map);
+ rdoc->appendChild(repr);
+ Inkscape::GC::release(repr);
+
+ if (!root) {
+ root = repr;
+ } else {
+ root = nullptr;
+ break;
+ }
+ } else if ( node->type == XML_COMMENT_NODE || node->type == XML_PI_NODE ) {
+ Node *repr=sp_repr_svg_read_node(rdoc, node, default_ns, prefix_map);
+ rdoc->appendChild(repr);
+ Inkscape::GC::release(repr);
+ }
+ }
+
+ if (root != nullptr) {
+ /* promote elements of some XML documents that don't use namespaces
+ * into their default namespace */
+ if ( default_ns && !strchr(root->name(), ':') ) {
+ if ( !strcmp(default_ns, SP_SVG_NS_URI) ) {
+ promote_to_namespace(root, "svg");
+ }
+ if ( !strcmp(default_ns, INKSCAPE_EXTENSION_URI) ) {
+ promote_to_namespace(root, INKSCAPE_EXTENSION_NS_NC);
+ }
+ }
+
+
+ // Clean unnecessary attributes and style properties from SVG documents. (Controlled by
+ // preferences.) Note: internal Inkscape svg files will also be cleaned (filters.svg,
+ // icons.svg). How can one tell if a file is internal?
+ if ( !strcmp(root->name(), "svg:svg" ) ) {
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool clean = prefs->getBool("/options/svgoutput/check_on_reading");
+ if( clean ) {
+ sp_attribute_clean_tree( root );
+ }
+ }
+ }
+
+ return rdoc;
+}
+
+gint sp_repr_qualified_name (gchar *p, gint len, xmlNsPtr ns, const xmlChar *name, const gchar */*default_ns*/, std::map<std::string, std::string> &prefix_map)
+{
+ const xmlChar *prefix;
+ if (ns){
+ if (ns->href ) {
+ prefix = reinterpret_cast<const xmlChar*>( sp_xml_ns_uri_prefix(reinterpret_cast<const gchar*>(ns->href),
+ reinterpret_cast<const char*>(ns->prefix)) );
+ prefix_map[reinterpret_cast<const char*>(prefix)] = reinterpret_cast<const char*>(ns->href);
+ }
+ else {
+ prefix = nullptr;
+ }
+ }
+ else {
+ prefix = nullptr;
+ }
+
+ if (prefix) {
+ return g_snprintf (p, len, "%s:%s", reinterpret_cast<const gchar*>(prefix), name);
+ } else {
+ return g_snprintf (p, len, "%s", name);
+ }
+}
+
+static Node *sp_repr_svg_read_node (Document *xml_doc, xmlNodePtr node, const gchar *default_ns, std::map<std::string, std::string> &prefix_map)
+{
+ xmlAttrPtr prop;
+ xmlNodePtr child;
+ gchar c[256];
+
+ if (node->type == XML_TEXT_NODE || node->type == XML_CDATA_SECTION_NODE) {
+
+ if (node->content == nullptr || *(node->content) == '\0') {
+ return nullptr; // empty text node
+ }
+
+ // Since libxml2 2.9.0, only element nodes are checked, thus check parent.
+ // Note: this only handles XML's rules for white space. SVG's specific rules
+ // are handled in sp-string.cpp.
+ bool preserve = (xmlNodeGetSpacePreserve (node->parent) == 1);
+
+ xmlChar *p;
+ for (p = node->content; *p && g_ascii_isspace (*p) && !preserve; p++)
+ ; // skip all whitespace
+
+ if (!(*p)) { // this is an all-whitespace node, and preserve == default
+ return nullptr; // we do not preserve all-whitespace nodes unless we are asked to
+ }
+
+ // We keep track of original node type so that CDATA sections are preserved on output.
+ return xml_doc->createTextNode(reinterpret_cast<gchar *>(node->content),
+ node->type == XML_CDATA_SECTION_NODE );
+ }
+
+ if (node->type == XML_COMMENT_NODE) {
+ return xml_doc->createComment(reinterpret_cast<gchar *>(node->content));
+ }
+
+ if (node->type == XML_PI_NODE) {
+ return xml_doc->createPI(reinterpret_cast<const gchar *>(node->name),
+ reinterpret_cast<const gchar *>(node->content));
+ }
+
+ if (node->type == XML_ENTITY_DECL) {
+ return nullptr;
+ }
+
+ sp_repr_qualified_name (c, 256, node->ns, node->name, default_ns, prefix_map);
+ Node *repr = xml_doc->createElement(c);
+ /* TODO remember node->ns->prefix if node->ns != NULL */
+
+ for (prop = node->properties; prop != nullptr; prop = prop->next) {
+ if (prop->children) {
+ sp_repr_qualified_name (c, 256, prop->ns, prop->name, default_ns, prefix_map);
+ repr->setAttribute(c, reinterpret_cast<gchar*>(prop->children->content));
+ /* TODO remember prop->ns->prefix if prop->ns != NULL */
+ }
+ }
+
+ if (node->content) {
+ repr->setContent(reinterpret_cast<gchar*>(node->content));
+ }
+
+ for (child = node->xmlChildrenNode; child != nullptr; child = child->next) {
+ Node *crepr = sp_repr_svg_read_node (xml_doc, child, default_ns, prefix_map);
+ if (crepr) {
+ repr->appendChild(crepr);
+ Inkscape::GC::release(crepr);
+ }
+ }
+
+ return repr;
+}
+
+
+static void sp_repr_save_writer(Document *doc, Inkscape::IO::Writer *out,
+ gchar const *default_ns,
+ gchar const *old_href_abs_base,
+ gchar const *new_href_abs_base)
+{
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool inlineattrs = prefs->getBool("/options/svgoutput/inlineattrs");
+ int indent = prefs->getInt("/options/svgoutput/indent", 2);
+
+ /* fixme: do this The Right Way */
+ out->writeString( "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n" );
+
+ const gchar *str = static_cast<Node *>(doc)->attribute("doctype");
+ if (str) {
+ out->writeString( str );
+ }
+
+ for (Node *repr = sp_repr_document_first_child(doc);
+ repr; repr = repr->next())
+ {
+ Inkscape::XML::NodeType const node_type = repr->type();
+ if ( node_type == Inkscape::XML::NodeType::ELEMENT_NODE ) {
+ sp_repr_write_stream_root_element(repr, *out, TRUE, default_ns, inlineattrs, indent,
+ old_href_abs_base, new_href_abs_base);
+ } else {
+ sp_repr_write_stream(repr, *out, 0, TRUE, GQuark(0), inlineattrs, indent,
+ old_href_abs_base, new_href_abs_base);
+ if ( node_type == Inkscape::XML::NodeType::COMMENT_NODE ) {
+ out->writeChar('\n');
+ }
+ }
+ }
+}
+
+
+Glib::ustring sp_repr_save_buf(Document *doc)
+{
+ Inkscape::IO::StringOutputStream souts;
+ Inkscape::IO::OutputStreamWriter outs(souts);
+
+ sp_repr_save_writer(doc, &outs, SP_INKSCAPE_NS_URI, nullptr, nullptr);
+
+ outs.close();
+ Glib::ustring buf = souts.getString();
+
+ return buf;
+}
+
+
+void sp_repr_save_stream(Document *doc, FILE *fp, gchar const *default_ns, bool compress,
+ gchar const *const old_href_abs_base,
+ gchar const *const new_href_abs_base)
+{
+ Inkscape::IO::FileOutputStream bout(fp);
+ Inkscape::IO::GzipOutputStream *gout = compress ? new Inkscape::IO::GzipOutputStream(bout) : nullptr;
+ Inkscape::IO::OutputStreamWriter *out = compress ? new Inkscape::IO::OutputStreamWriter( *gout ) : new Inkscape::IO::OutputStreamWriter( bout );
+
+ sp_repr_save_writer(doc, out, default_ns, old_href_abs_base, new_href_abs_base);
+
+ delete out;
+ delete gout;
+}
+
+
+
+/**
+ * Returns true if file successfully saved.
+ *
+ * \param filename The actual file to do I/O to, which might be a temp file.
+ *
+ * \param for_filename The base URI [actually filename] to assume for purposes of rewriting
+ * xlink:href attributes.
+ */
+bool sp_repr_save_rebased_file(Document *doc, gchar const *const filename, gchar const *default_ns,
+ gchar const *old_base, gchar const *for_filename)
+{
+ if (!filename) {
+ return false;
+ }
+
+ bool compress;
+ {
+ size_t const filename_len = strlen(filename);
+ compress = ( filename_len > 5
+ && strcasecmp(".svgz", filename + filename_len - 5) == 0 );
+ }
+
+ Inkscape::IO::dump_fopen_call( filename, "B" );
+ FILE *file = Inkscape::IO::fopen_utf8name(filename, "w");
+ if (file == nullptr) {
+ return false;
+ }
+
+ std::string old_href_abs_base;
+ std::string new_href_abs_base;
+
+ if (old_base) {
+ old_href_abs_base = old_base;
+ if (!Glib::path_is_absolute(old_href_abs_base)) {
+ old_href_abs_base = Glib::build_filename(Glib::get_current_dir(), old_href_abs_base);
+ }
+ }
+
+ if (for_filename) {
+ if (Glib::path_is_absolute(for_filename)) {
+ new_href_abs_base = Glib::path_get_dirname(for_filename);
+ } else {
+ std::string const cwd = Glib::get_current_dir();
+ std::string const for_abs_filename = Glib::build_filename(cwd, for_filename);
+ new_href_abs_base = Glib::path_get_dirname(for_abs_filename);
+ }
+
+ /* effic: Once we're confident that we never need (or never want) to resort
+ * to using sodipodi:absref instead of the xlink:href value,
+ * then we should do `if streq() { free them and set both to NULL; }'. */
+ }
+ sp_repr_save_stream(doc, file, default_ns, compress, old_href_abs_base.c_str(), new_href_abs_base.c_str());
+
+ if (fclose (file) != 0) {
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * Returns true iff file successfully saved.
+ */
+bool sp_repr_save_file(Document *doc, gchar const *const filename, gchar const *default_ns)
+{
+ return sp_repr_save_rebased_file(doc, filename, default_ns, nullptr, nullptr);
+}
+
+
+/* (No doubt this function already exists elsewhere.) */
+static void repr_quote_write (Writer &out, const gchar * val)
+{
+ if (val) {
+ for (; *val != '\0'; val++) {
+ switch (*val) {
+ case '"': out.writeString( "&quot;" ); break;
+ case '&': out.writeString( "&amp;" ); break;
+ case '<': out.writeString( "&lt;" ); break;
+ case '>': out.writeString( "&gt;" ); break;
+ default: out.writeChar( *val ); break;
+ }
+ }
+ }
+}
+
+static void repr_write_comment( Writer &out, const gchar * val, bool addWhitespace, gint indentLevel, int indent )
+{
+ if ( indentLevel > 16 ) {
+ indentLevel = 16;
+ }
+ if (addWhitespace && indent) {
+ for (gint i = 0; i < indentLevel; i++) {
+ for (gint j = 0; j < indent; j++) {
+ out.writeChar(' ');
+ }
+ }
+ }
+
+ out.printf("<!--%s-->", val);
+
+ if (addWhitespace) {
+ out.writeChar('\n');
+ }
+}
+
+namespace {
+
+typedef std::map<Glib::QueryQuark, gchar const *, Inkscape::compare_quark_ids> LocalNameMap;
+typedef std::map<Glib::QueryQuark, Inkscape::Util::ptr_shared, Inkscape::compare_quark_ids> NSMap;
+
+gchar const *qname_local_name(Glib::QueryQuark qname) {
+ static LocalNameMap local_name_map;
+ LocalNameMap::iterator iter = local_name_map.find(qname);
+ if ( iter != local_name_map.end() ) {
+ return (*iter).second;
+ } else {
+ gchar const *name_string=g_quark_to_string(qname);
+ gchar const *prefix_end=strchr(name_string, ':');
+ if (prefix_end) {
+ return prefix_end + 1;
+ } else {
+ return name_string;
+ }
+ }
+}
+
+void add_ns_map_entry(NSMap &ns_map, Glib::QueryQuark prefix) {
+ using Inkscape::Util::ptr_shared;
+ using Inkscape::Util::share_unsafe;
+
+ static const Glib::QueryQuark xml_prefix("xml");
+
+ NSMap::iterator iter=ns_map.find(prefix);
+ if ( iter == ns_map.end() ) {
+ if (prefix.id()) {
+ gchar const *uri=sp_xml_ns_prefix_uri(g_quark_to_string(prefix));
+ if (uri) {
+ ns_map.insert(NSMap::value_type(prefix, share_unsafe(uri)));
+ } else if ( prefix != xml_prefix ) {
+ g_warning("No namespace known for normalized prefix %s", g_quark_to_string(prefix));
+ }
+ } else {
+ ns_map.insert(NSMap::value_type(prefix, ptr_shared()));
+ }
+ }
+}
+
+void populate_ns_map(NSMap &ns_map, Node &repr) {
+ if ( repr.type() == Inkscape::XML::NodeType::ELEMENT_NODE ) {
+ add_ns_map_entry(ns_map, qname_prefix(repr.code()));
+ for ( const auto & iter : repr.attributeList() )
+ {
+ Glib::QueryQuark prefix=qname_prefix(iter.key);
+ if (prefix.id()) {
+ add_ns_map_entry(ns_map, prefix);
+ }
+ }
+ for ( Node *child=repr.firstChild() ;
+ child ; child = child->next() )
+ {
+ populate_ns_map(ns_map, *child);
+ }
+ }
+}
+
+}
+
+static void sp_repr_write_stream_root_element(Node *repr, Writer &out,
+ bool add_whitespace, gchar const *default_ns,
+ int inlineattrs, int indent,
+ gchar const *const old_href_base,
+ gchar const *const new_href_base)
+{
+ using Inkscape::Util::ptr_shared;
+
+ g_assert(repr != nullptr);
+
+ // Clean unnecessary attributes and stype properties. (Controlled by preferences.)
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ bool clean = prefs->getBool("/options/svgoutput/check_on_writing");
+ if (clean) sp_attribute_clean_tree( repr );
+
+ // Sort attributes in a canonical order (helps with "diffing" SVG files).only if not set disable optimizations
+ bool sort = !prefs->getBool("/options/svgoutput/disable_optimizations") && prefs->getBool("/options/svgoutput/sort_attributes");
+ if (sort) sp_attribute_sort_tree( *repr );
+
+ Glib::QueryQuark xml_prefix=g_quark_from_static_string("xml");
+
+ NSMap ns_map;
+ populate_ns_map(ns_map, *repr);
+
+ Glib::QueryQuark elide_prefix=GQuark(0);
+ if ( default_ns && ns_map.find(GQuark(0)) == ns_map.end() ) {
+ elide_prefix = g_quark_from_string(sp_xml_ns_uri_prefix(default_ns, nullptr));
+ }
+
+ auto attributes = repr->attributeList(); // copy
+
+ using Inkscape::Util::share_string;
+ for (auto iter : ns_map)
+ {
+ Glib::QueryQuark prefix=iter.first;
+ ptr_shared ns_uri=iter.second;
+
+ if (prefix.id()) {
+ if ( prefix != xml_prefix ) {
+ if ( elide_prefix == prefix ) {
+ //repr->setAttribute(share_string("xmlns"), share_string(ns_uri));
+ attributes.emplace_back(g_quark_from_static_string("xmlns"), ns_uri);
+ }
+
+ Glib::ustring attr_name="xmlns:";
+ attr_name.append(g_quark_to_string(prefix));
+ GQuark key = g_quark_from_string(attr_name.c_str());
+ //repr->setAttribute(share_string(attr_name.c_str()), share_string(ns_uri));
+ attributes.emplace_back(key, ns_uri);
+ }
+ } else {
+ // if there are non-namespaced elements, we can't globally
+ // use a default namespace
+ elide_prefix = GQuark(0);
+ }
+ }
+
+ return sp_repr_write_stream_element(repr, out, 0, add_whitespace, elide_prefix, attributes,
+ inlineattrs, indent, old_href_base, new_href_base);
+}
+
+void sp_repr_write_stream( Node *repr, Writer &out, gint indent_level,
+ bool add_whitespace, Glib::QueryQuark elide_prefix,
+ int inlineattrs, int indent,
+ gchar const *const old_href_base,
+ gchar const *const new_href_base)
+{
+ switch (repr->type()) {
+ case Inkscape::XML::NodeType::TEXT_NODE: {
+ auto textnode = dynamic_cast<const Inkscape::XML::TextNode *>(repr);
+ assert(textnode);
+ if (textnode->is_CData()) {
+ // Preserve CDATA sections, not converting '&' to &amp;, etc.
+ out.printf( "<![CDATA[%s]]>", repr->content() );
+ } else {
+ repr_quote_write( out, repr->content() );
+ }
+ break;
+ }
+ case Inkscape::XML::NodeType::COMMENT_NODE: {
+ repr_write_comment( out, repr->content(), add_whitespace, indent_level, indent );
+ break;
+ }
+ case Inkscape::XML::NodeType::PI_NODE: {
+ out.printf( "<?%s %s?>", repr->name(), repr->content() );
+ break;
+ }
+ case Inkscape::XML::NodeType::ELEMENT_NODE: {
+ sp_repr_write_stream_element( repr, out, indent_level,
+ add_whitespace, elide_prefix,
+ repr->attributeList(),
+ inlineattrs, indent,
+ old_href_base, new_href_base);
+ break;
+ }
+ case Inkscape::XML::NodeType::DOCUMENT_NODE: {
+ g_assert_not_reached();
+ break;
+ }
+ default: {
+ g_assert_not_reached();
+ }
+ }
+}
+
+
+void sp_repr_write_stream_element( Node * repr, Writer & out,
+ gint indent_level, bool add_whitespace,
+ Glib::QueryQuark elide_prefix,
+ const AttributeVector & attributes,
+ int inlineattrs, int indent,
+ gchar const *old_href_base,
+ gchar const *new_href_base )
+{
+ Node *child = nullptr;
+ bool loose = false;
+ bool const add_whitespace_parent = add_whitespace;
+
+ g_return_if_fail (repr != nullptr);
+
+ if ( indent_level > 16 ) {
+ indent_level = 16;
+ }
+
+ if (add_whitespace && indent) {
+ for (gint i = 0; i < indent_level; i++) {
+ for (gint j = 0; j < indent; j++) {
+ out.writeChar(' ');
+ }
+ }
+ }
+
+ GQuark code = repr->code();
+ gchar const *element_name;
+ if ( elide_prefix == qname_prefix(code) ) {
+ element_name = qname_local_name(code);
+ } else {
+ element_name = g_quark_to_string(code);
+ }
+ out.printf( "<%s", element_name );
+
+ // If this is a <text> element, suppress formatting whitespace
+ // for its content and children:
+ if (strcmp(repr->name(), "svg:text") == 0 ||
+ strcmp(repr->name(), "svg:flowRoot") == 0) {
+ add_whitespace = false;
+ } else {
+ // Suppress formatting whitespace for xml:space="preserve"
+ gchar const *xml_space_attr = repr->attribute("xml:space");
+ if (g_strcmp0(xml_space_attr, "preserve") == 0) {
+ add_whitespace = false;
+ } else if (g_strcmp0(xml_space_attr, "default") == 0) {
+ add_whitespace = true;
+ }
+ }
+
+ const auto rbd = rebase_href_attrs(old_href_base, new_href_base, attributes);
+ for (const auto &iter : rbd) {
+ if (!inlineattrs) {
+ out.writeChar('\n');
+ if (indent) {
+ for ( gint i = 0 ; i < indent_level + 1 ; i++ ) {
+ for ( gint j = 0 ; j < indent ; j++ ) {
+ out.writeChar(' ');
+ }
+ }
+ }
+ }
+ out.printf(" %s=\"", g_quark_to_string(iter.key));
+ repr_quote_write(out, iter.value);
+ out.writeChar('"');
+ }
+
+ loose = TRUE;
+ for (child = repr->firstChild() ; child != nullptr; child = child->next()) {
+ if (child->type() == Inkscape::XML::NodeType::TEXT_NODE) {
+ loose = FALSE;
+ break;
+ }
+ }
+
+ if (repr->firstChild()) {
+ out.writeChar('>');
+ if (loose && add_whitespace) {
+ out.writeChar('\n');
+ }
+ for (child = repr->firstChild(); child != nullptr; child = child->next()) {
+ sp_repr_write_stream(child, out, ( loose ? indent_level + 1 : 0 ),
+ add_whitespace, elide_prefix, inlineattrs, indent,
+ old_href_base, new_href_base);
+ }
+
+ if (loose && add_whitespace && indent) {
+ for (gint i = 0; i < indent_level; i++) {
+ for ( gint j = 0 ; j < indent ; j++ ) {
+ out.writeChar(' ');
+ }
+ }
+ }
+ out.printf( "</%s>", element_name );
+ } else {
+ out.writeString( " />" );
+ }
+
+ if (add_whitespace_parent) {
+ out.writeChar('\n');
+ }
+}
+
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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