/* * 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> #ifdef WITH_GNOME_VFS # include <libgnomevfs/gnome-vfs.h> #endif namespace Inkscape { namespace Extension { namespace Internal { #include "clear-n_.h" /** \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 spns 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 spns = ( !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 (spns) { 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); } if (!sp_repr_save_rebased_file(repr->document(), filename, SP_SVG_NS_URI, doc->base, filename)) { throw Inkscape::Extension::Output::save_failed(); } if (!spns) { 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 :