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/*
* Inkscape::ResourceManager - tracks external resources such as image and css files.
*
* Copyright 2011 Jon A. Cruz <jon@joncruz.org>
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <string>
#include <vector>
#include <algorithm>
#include <glibmm/i18n.h>
#include <glibmm/convert.h>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#include <glibmm/uriutils.h>
#include <gtkmm/recentmanager.h>
#include "resource-manager.h"
#include "document.h"
#include "sp-object.h"
#include "xml/node.h"
#include "document-undo.h"
namespace Inkscape {
std::vector<std::string> splitPath( std::string const &path )
{
std::vector<std::string> parts;
std::string prior;
std::string tmp = path;
while ( !tmp.empty() && (tmp != prior) ) {
prior = tmp;
parts.push_back( Glib::path_get_basename(tmp) );
tmp = Glib::path_get_dirname(tmp);
}
if ( !parts.empty() ) {
std::reverse(parts.begin(), parts.end());
if ( (parts[0] == ".") && (path[0] != '.') ) {
parts.erase(parts.begin());
}
}
return parts;
}
std::string convertPathToRelative( std::string const &path, std::string const &docbase )
{
std::string result = path;
if ( !path.empty() && Glib::path_is_absolute(path) ) {
// Whack the parts into pieces
std::vector<std::string> parts = splitPath(path);
std::vector<std::string> baseParts = splitPath(docbase);
// TODO debug g_message("+++++++++++++++++++++++++");
for ( std::vector<std::string>::iterator it = parts.begin(); it != parts.end(); ++it ) {
// TODO debug g_message(" [%s]", it->c_str());
}
// TODO debug g_message(" - - - - - - - - - - - - - - - ");
for ( std::vector<std::string>::iterator it = baseParts.begin(); it != baseParts.end(); ++it ) {
// TODO debug g_message(" [%s]", it->c_str());
}
// TODO debug g_message("+++++++++++++++++++++++++");
if ( !parts.empty() && !baseParts.empty() && (parts[0] == baseParts[0]) ) {
// Both paths have the same root. We can proceed.
while ( !parts.empty() && !baseParts.empty() && (parts[0] == baseParts[0]) ) {
parts.erase( parts.begin() );
baseParts.erase( baseParts.begin() );
}
// TODO debug g_message("+++++++++++++++++++++++++");
for ( std::vector<std::string>::iterator it = parts.begin(); it != parts.end(); ++it ) {
// TODO debug g_message(" [%s]", it->c_str());
}
// TODO debug g_message(" - - - - - - - - - - - - - - - ");
for ( std::vector<std::string>::iterator it = baseParts.begin(); it != baseParts.end(); ++it ) {
// TODO debug g_message(" [%s]", it->c_str());
}
// TODO debug g_message("+++++++++++++++++++++++++");
if ( !parts.empty() ) {
result.clear();
for ( size_t i = 0; i < baseParts.size(); ++i ) {
parts.insert(parts.begin(), "..");
}
result = Glib::build_filename( parts );
// TODO debug g_message("----> [%s]", result.c_str());
}
}
}
return result;
}
class ResourceManagerImpl : public ResourceManager {
public:
ResourceManagerImpl();
virtual ~ResourceManagerImpl();
virtual bool fixupBrokenLinks(SPDocument *doc);
/**
* Walk all links in a document and create a listing of unique broken links.
*
* @return a list of all broken links.
*/
std::vector<Glib::ustring> findBrokenLinks(SPDocument *doc);
/**
* Resolve broken links as a whole and return a map for those that can be found.
*
* Note: this will allow for future enhancements including relinking to new locations
* with the most broken files found, etc.
*
* @return a map of found links.
*/
std::map<Glib::ustring, Glib::ustring> locateLinks(Glib::ustring const & docbase, std::vector<Glib::ustring> const & brokenLinks);
bool extractFilepath( Glib::ustring const &href, std::string &uri );
bool searchUpwards( std::string const &base, std::string const &subpath, std::string &dest );
protected:
};
ResourceManagerImpl::ResourceManagerImpl()
: ResourceManager()
{
}
ResourceManagerImpl::~ResourceManagerImpl()
{
}
bool ResourceManagerImpl::extractFilepath( Glib::ustring const &href, std::string &uri )
{
bool isFile = false;
uri.clear();
std::string scheme = Glib::uri_parse_scheme(href);
if ( !scheme.empty() ) {
// TODO debug g_message("Scheme is now [%s]", scheme.c_str());
if ( scheme == "file" ) {
// TODO debug g_message("--- is a file URI [%s]", href.c_str());
// throws Glib::ConvertError:
uri = Glib::filename_from_uri(href); // TODO see if we can get this to throw
// TODO debug g_message(" [%s]", uri.c_str());
isFile = true;
}
} else {
// No scheme. Assuming it is a file path (absolute or relative).
// throws Glib::ConvertError:
uri = Glib::filename_from_utf8( href );
isFile = true;
}
return isFile;
}
std::vector<Glib::ustring> ResourceManagerImpl::findBrokenLinks( SPDocument *doc )
{
std::vector<Glib::ustring> result;
std::set<Glib::ustring> uniques;
if ( doc ) {
GSList const *images = doc->getResourceList("image");
for (GSList const *it = images; it; it = it->next) {
Inkscape::XML::Node *ir = static_cast<SPObject *>(it->data)->getRepr();
gchar const *href = ir->attribute("xlink:href");
if ( href && ( uniques.find(href) == uniques.end() ) ) {
std::string uri;
if ( extractFilepath( href, uri ) ) {
if ( Glib::path_is_absolute(uri) ) {
if ( !Glib::file_test(uri, Glib::FILE_TEST_EXISTS) ) {
result.push_back(href);
uniques.insert(href);
}
} else {
std::string combined = Glib::build_filename(doc->getBase(), uri);
if ( !Glib::file_test(uri, Glib::FILE_TEST_EXISTS) ) {
result.push_back(href);
uniques.insert(href);
}
}
}
}
}
}
return result;
}
std::map<Glib::ustring, Glib::ustring> ResourceManagerImpl::locateLinks(Glib::ustring const & docbase, std::vector<Glib::ustring> const & brokenLinks)
{
std::map<Glib::ustring, Glib::ustring> result;
// Note: we use a vector because we want them to stay in order:
std::vector<std::string> priorLocations;
Glib::RefPtr<Gtk::RecentManager> recentMgr = Gtk::RecentManager::get_default();
std::vector< Glib::RefPtr<Gtk::RecentInfo> > recentItems = recentMgr->get_items();
for ( std::vector< Glib::RefPtr<Gtk::RecentInfo> >::iterator it = recentItems.begin(); it != recentItems.end(); ++it ) {
Glib::ustring uri = (*it)->get_uri();
std::string scheme = Glib::uri_parse_scheme(uri);
if ( scheme == "file" ) {
std::string path = Glib::filename_from_uri(uri);
path = Glib::path_get_dirname(path);
if ( std::find(priorLocations.begin(), priorLocations.end(), path) == priorLocations.end() ) {
// TODO debug g_message(" ==>[%s]", path.c_str());
priorLocations.push_back(path);
}
}
}
// At the moment we expect this list to contain file:// references, or simple relative or absolute paths.
for ( std::vector<Glib::ustring>::const_iterator it = brokenLinks.begin(); it != brokenLinks.end(); ++it ) {
// TODO debug g_message("========{%s}", it->c_str());
std::string uri;
if ( extractFilepath( *it, uri ) ) {
// We were able to get some path. Check it
std::string origPath = uri;
if ( !Glib::path_is_absolute(uri) ) {
uri = Glib::build_filename(docbase, uri);
// TODO debug g_message(" not absolute. Fixing up as [%s]", uri.c_str());
}
if ( !Glib::file_test(uri, Glib::FILE_TEST_EXISTS) ) {
// TODO debug g_message(" DOES NOT EXIST.");
std::string remainder;
bool exists = searchUpwards( docbase, origPath, remainder );
if ( !exists ) {
// TODO debug g_message("Expanding the search...");
// Check if the MRU bases point us to it.
if ( !Glib::path_is_absolute(origPath) ) {
for ( std::vector<std::string>::iterator it = priorLocations.begin(); !exists && (it != priorLocations.end()); ++it ) {
exists = searchUpwards( *it, origPath, remainder );
}
}
}
if ( exists ) {
if ( Glib::path_is_absolute( remainder ) ) {
// TODO debug g_message("Need to convert to relative if possible [%s]", remainder.c_str());
remainder = convertPathToRelative( remainder, docbase );
}
bool isAbsolute = Glib::path_is_absolute( remainder );
Glib::ustring replacement = isAbsolute ? Glib::filename_to_uri( remainder ) : Glib::filename_to_utf8( remainder );
result[*it] = replacement;
}
}
}
}
return result;
}
bool ResourceManagerImpl::fixupBrokenLinks(SPDocument *doc)
{
bool changed = false;
if ( doc ) {
// TODO debug g_message("FIXUP FIXUP FIXUP FIXUP FIXUP FIXUP FIXUP FIXUP FIXUP FIXUP");
// TODO debug g_message(" base is [%s]", doc->getBase());
std::vector<Glib::ustring> brokenHrefs = findBrokenLinks(doc);
if ( !brokenHrefs.empty() ) {
// TODO debug g_message(" FOUND SOME LINKS %d", static_cast<int>(brokenHrefs.size()));
for ( std::vector<Glib::ustring>::iterator it = brokenHrefs.begin(); it != brokenHrefs.end(); ++it ) {
// TODO debug g_message(" [%s]", it->c_str());
}
}
std::map<Glib::ustring, Glib::ustring> mapping = locateLinks(doc->getBase(), brokenHrefs);
for ( std::map<Glib::ustring, Glib::ustring>::iterator it = mapping.begin(); it != mapping.end(); ++it )
{
// TODO debug g_message(" [%s] ==> {%s}", it->first.c_str(), it->second.c_str());
}
bool savedUndoState = DocumentUndo::getUndoSensitive(doc);
DocumentUndo::setUndoSensitive(doc, true);
GSList const *images = doc->getResourceList("image");
for (GSList const *it = images; it; it = it->next) {
Inkscape::XML::Node *ir = static_cast<SPObject *>(it->data)->getRepr();
gchar const *href = ir->attribute("xlink:href");
if ( href ) {
// TODO debug g_message(" consider [%s]", href);
if ( mapping.find(href) != mapping.end() ) {
// TODO debug g_message(" Found a replacement");
ir->setAttribute( "xlink:href", mapping[href].c_str() );
if ( ir->attribute( "sodipodi:absref" ) ) {
ir->setAttribute( "sodipodi:absref", 0 ); // Remove this attribute
}
SPObject *updated = doc->getObjectByRepr(ir);
if (updated) {
// force immediate update of dependant attributes
updated->updateRepr();
}
changed = true;
}
}
}
if ( changed ) {
DocumentUndo::done( doc, SP_VERB_DIALOG_XML_EDITOR, _("Fixup broken links") );
}
DocumentUndo::setUndoSensitive(doc, savedUndoState);
}
return changed;
}
bool ResourceManagerImpl::searchUpwards( std::string const &base, std::string const &subpath, std::string &dest )
{
bool exists = false;
// TODO debug g_message("............");
std::vector<std::string> parts = splitPath(subpath);
std::vector<std::string> baseParts = splitPath(base);
while ( !exists && !baseParts.empty() ) {
std::vector<std::string> current;
current.insert(current.begin(), parts.begin(), parts.end());
// TODO debug g_message(" ---{%s}", Glib::build_filename( baseParts ).c_str());
while ( !exists && !current.empty() ) {
std::vector<std::string> combined;
combined.insert( combined.end(), baseParts.begin(), baseParts.end() );
combined.insert( combined.end(), current.begin(), current.end() );
std::string filepath = Glib::build_filename( combined );
exists = Glib::file_test(filepath, Glib::FILE_TEST_EXISTS);
// TODO debug g_message(" ...[%s] %s", filepath.c_str(), (exists ? "XXX" : ""));
if ( exists ) {
dest = filepath;
}
current.erase( current.begin() );
}
baseParts.pop_back();
}
return exists;
}
static ResourceManagerImpl* theInstance = 0;
ResourceManager::ResourceManager()
: Glib::Object()
{
}
ResourceManager::~ResourceManager() {
}
ResourceManager& ResourceManager::getManager() {
if ( !theInstance ) {
theInstance = new ResourceManagerImpl();
}
return *theInstance;
}
} // namespace Inkscape
/*
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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