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//
// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010,
// 2011 Free Software Foundation, Inc
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef GNASH_SWF_IMPORTASSETSTAG_H
#define GNASH_SWF_IMPORTASSETSTAG_H
#include <vector>
#include <utility>
#include <string>
#include <memory>
#include "ControlTag.h"
#include "Movie.h"
#include "MovieClip.h"
#include "SWFStream.h"
#include "MovieFactory.h"
#include "log.h"
#include "StreamProvider.h"
namespace gnash {
namespace SWF {
class ImportAssetsTag : public ControlTag
{
public:
typedef std::pair<int, std::string> Import;
typedef std::vector<Import> Imports;
static void loader(SWFStream& in, TagType tag, movie_definition& m,
const RunResources& r)
{
assert(tag == SWF::IMPORTASSETS || tag == SWF::IMPORTASSETS2);
boost::intrusive_ptr<ControlTag> p(new ImportAssetsTag(tag, in, m, r));
m.addControlTag(p);
}
/// Execute an ImportAssetsTag.
//
/// Executing this tag adds the imported definition with an id to the
/// list of known characters. This id may be different from the
/// genuine id of the DefinitionTag.
virtual void executeState(MovieClip* m, DisplayList& /*l*/) const {
Movie* mov = m->get_root();
for (Imports::const_iterator it = _imports.begin(), e = _imports.end();
it != e; ++it) {
mov->addCharacter(it->first);
}
}
private:
ImportAssetsTag(TagType t, SWFStream& in, movie_definition& m,
const RunResources& r)
{
read(t, in, m, r);
}
void read(TagType t, SWFStream& in, movie_definition& m,
const RunResources& r) {
std::string source_url;
in.read_string(source_url);
// Resolve relative urls against baseurl
URL abs_url(source_url, r.streamProvider().baseURL());
unsigned char import_version = 0;
if (t == SWF::IMPORTASSETS2) {
in.ensureBytes(2);
import_version = in.read_uint(8);
boost::uint8_t reserved = in.read_uint(8);
UNUSED(reserved);
}
in.ensureBytes(2);
const boost::uint16_t count = in.read_u16();
IF_VERBOSE_PARSE(
log_parse(_(" import: version = %u, source_url = %s (%s), "
"count = %d"), import_version, abs_url.str(), source_url,
count);
);
// Try to load the source movie into the movie library.
boost::intrusive_ptr<movie_definition> source_movie;
try {
source_movie = MovieFactory::makeMovie(abs_url, r);
}
catch (gnash::GnashException& e) {
log_error(_("Exception: %s"), e.what());
}
if (!source_movie) {
// Give up on imports.
log_error(_("can't import movie from url %s"), abs_url.str());
return;
}
// Quick consistency check, we might as well do
// something smarter, if we agree on semantic
if (source_movie == &m) {
IF_VERBOSE_MALFORMED_SWF(
log_swferror(_("Movie attempts to import symbols from "
"itself."));
);
return;
}
// Get the imports.
for (size_t i = 0; i < count; ++i)
{
in.ensureBytes(2);
const boost::uint16_t id = in.read_u16();
// We don't consider 0 valid.
if (!id) continue;
std::string symbolName;
in.read_string(symbolName);
IF_VERBOSE_PARSE (
log_parse(_(" import: id = %d, name = %s"), id, symbolName);
);
_imports.push_back(std::make_pair(id, symbolName));
}
m.importResources(source_movie, _imports);
}
private:
Imports _imports;
};
} // namespace SWF
} // namespace gnash
#endif