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/*
* This is the code that moves all of the SVG loading and saving into
* the module format. Really Inkscape is built to handle these formats
* internally, so this is just calling those internal functions.
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* Ted Gould <ted@gould.cx>
*
* Copyright (C) 2002-2003 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "sp-object.h"
#include "svg.h"
#include "file.h"
#include "extension/system.h"
#include "extension/output.h"
#include <vector>
#include "xml/attribute-record.h"
#ifdef WITH_GNOME_VFS
# include <libgnomevfs/gnome-vfs.h>
#endif
namespace Inkscape {
namespace Extension {
namespace Internal {
#include "clear-n_.h"
using Inkscape::Util::List;
using Inkscape::XML::AttributeRecord;
using Inkscape::XML::Node;
void pruneExtendedAttributes( Inkscape::XML::Node *repr )
{
if (repr) {
if ( repr->type() == Inkscape::XML::ELEMENT_NODE ) {
std::vector<gchar const*> toBeRemoved;
for ( List<AttributeRecord const> it = repr->attributeList(); it; ++it ) {
const gchar* attrName = g_quark_to_string(it->key);
if ((strncmp("inkscape:", attrName, 9) == 0) || (strncmp("sodipodi:", attrName, 9) == 0)) {
toBeRemoved.push_back(attrName);
}
}
// Can't change the set we're interating over while we are iterating.
for ( std::vector<gchar const*>::iterator it = toBeRemoved.begin(); it != toBeRemoved.end(); ++it ) {
repr->setAttribute(*it, 0);
}
}
for ( Node *child = repr->firstChild(); child; child = child->next() ) {
pruneExtendedAttributes(child);
}
}
}
/**
\return None
\brief What would an SVG editor be without loading/saving SVG
files. This function sets that up.
For each module there is a call to Inkscape::Extension::build_from_mem
with a rather large XML file passed in. This is a constant string
that describes the module. At the end of this call a module is
returned that is basically filled out. The one thing that it doesn't
have is the key function for the operation. And that is linked at
the end of each call.
*/
void
Svg::init(void)
{
Inkscape::Extension::Extension * ext;
/* SVG in */
ext = Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>" N_("SVG Input") "</name>\n"
"<id>" SP_MODULE_KEY_INPUT_SVG "</id>\n"
"<input>\n"
"<extension>.svg</extension>\n"
"<mimetype>image/svg+xml</mimetype>\n"
"<filetypename>" N_("Scalable Vector Graphic (*.svg)") "</filetypename>\n"
"<filetypetooltip>" N_("Inkscape native file format and W3C standard") "</filetypetooltip>\n"
"<output_extension>" SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE "</output_extension>\n"
"</input>\n"
"</inkscape-extension>", new Svg());
/* SVG out Inkscape */
ext = Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>" N_("SVG Output Inkscape") "</name>\n"
"<id>" SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE "</id>\n"
"<output>\n"
"<extension>.svg</extension>\n"
"<mimetype>image/x-inkscape-svg</mimetype>\n"
"<filetypename>" N_("Inkscape SVG (*.svg)") "</filetypename>\n"
"<filetypetooltip>" N_("SVG format with Inkscape extensions") "</filetypetooltip>\n"
"<dataloss>false</dataloss>\n"
"</output>\n"
"</inkscape-extension>", new Svg());
/* SVG out */
ext = Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>" N_("SVG Output") "</name>\n"
"<id>" SP_MODULE_KEY_OUTPUT_SVG "</id>\n"
"<output>\n"
"<extension>.svg</extension>\n"
"<mimetype>image/svg+xml</mimetype>\n"
"<filetypename>" N_("Plain SVG (*.svg)") "</filetypename>\n"
"<filetypetooltip>" N_("Scalable Vector Graphics format as defined by the W3C") "</filetypetooltip>\n"
"</output>\n"
"</inkscape-extension>", new Svg());
#ifdef WITH_GNOME_VFS
gnome_vfs_init();
#endif
return;
}
#ifdef WITH_GNOME_VFS
#define BUF_SIZE 8192
static gchar *
_load_uri (const gchar *uri)
{
GnomeVFSHandle *handle = NULL;
GnomeVFSFileSize bytes_read;
gsize bytesRead = 0;
gsize bytesWritten = 0;
GError* error = NULL;
gchar* uri_local = g_filename_from_utf8( uri, -1, &bytesRead, &bytesWritten, &error);
if ( uri_local == NULL ) {
g_warning( "Error converting filename to locale encoding.");
}
GnomeVFSResult result = gnome_vfs_open (&handle, uri_local, GNOME_VFS_OPEN_READ);
if (result != GNOME_VFS_OK) {
g_warning("%s", gnome_vfs_result_to_string(result));
}
std::vector<gchar> doc;
while (result == GNOME_VFS_OK) {
gchar buffer[BUF_SIZE];
result = gnome_vfs_read (handle, buffer, BUF_SIZE, &bytes_read);
doc.insert(doc.end(), buffer, buffer+bytes_read);
}
return g_strndup(&doc[0], doc.size());
}
#endif
/**
\return A new document just for you!
\brief This function takes in a filename of a SVG document and
turns it into a SPDocument.
\param mod Module to use
\param uri The path to the file (UTF-8)
This function is really simple, it just calls sp_document_new...
*/
SPDocument *
Svg::open (Inkscape::Extension::Input */*mod*/, const gchar *uri)
{
#ifdef WITH_GNOME_VFS
if (!gnome_vfs_initialized() || gnome_vfs_uri_is_local(gnome_vfs_uri_new(uri))) {
// Use built-in loader instead of VFS for this
return sp_document_new(uri, TRUE);
}
gchar * buffer = _load_uri(uri);
if (buffer == NULL) {
g_warning("Error: Could not open file '%s' with VFS\n", uri);
return NULL;
}
SPDocument * doc = sp_document_new_from_mem(buffer, strlen(buffer), 1);
g_free(buffer);
return doc;
#else
return sp_document_new (uri, TRUE);
#endif
}
/**
\return None
\brief This is the function that does all of the SVG saves in
Inkscape. It detects whether it should do a Inkscape
namespace save internally.
\param mod Extension to use.
\param doc Document to save.
\param uri The filename to save the file to.
This function first checks its parameters, and makes sure that
we're getting good data. It also checks the module ID of the
incoming module to figure out whether this save should include
the Inkscape namespace stuff or not. The result of that comparison
is stored in the exportExtensions variable.
If there is not to be Inkscape name spaces a new document is created
without. (I think, I'm not sure on this code)
All of the internally referenced imageins are also set to relative
paths in the file. And the file is saved.
This really needs to be fleshed out more, but I don't quite understand
all of this code. I just stole it.
*/
void
Svg::save(Inkscape::Extension::Output *mod, SPDocument *doc, gchar const *filename)
{
g_return_if_fail(doc != NULL);
g_return_if_fail(filename != NULL);
gchar *save_path = g_path_get_dirname(filename);
bool const exportExtensions = ( !mod->get_id()
|| !strcmp (mod->get_id(), SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE)
|| !strcmp (mod->get_id(), SP_MODULE_KEY_OUTPUT_SVGZ_INKSCAPE));
Inkscape::XML::Document *rdoc = NULL;
Inkscape::XML::Node *repr = NULL;
if (exportExtensions) {
repr = sp_document_repr_root (doc);
} else {
rdoc = sp_repr_document_new ("svg:svg");
repr = rdoc->root();
repr = sp_document_root (doc)->updateRepr(rdoc, repr, SP_OBJECT_WRITE_BUILD);
pruneExtendedAttributes(repr);
}
if (!sp_repr_save_rebased_file(repr->document(), filename, SP_SVG_NS_URI,
doc->base, filename)) {
throw Inkscape::Extension::Output::save_failed();
}
if (!exportExtensions) {
Inkscape::GC::release(rdoc);
}
g_free(save_path);
return;
}
} } } /* namespace inkscape, module, implementation */
/*
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 :
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