95e2bec215
Speed up container_scan() again, by eliminating the need to call scan_file() for each item.
100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/*
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* Copyright 2003-2016 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "Log.hxx"
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#include "DetachedSong.hxx"
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#include "SongSave.hxx"
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#include "decoder/DecoderList.hxx"
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#include "decoder/DecoderPlugin.hxx"
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#include "fs/Path.hxx"
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#include "fs/io/StdioOutputStream.hxx"
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#include "fs/io/BufferedOutputStream.hxx"
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#include "util/UriUtil.hxx"
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#include <stdexcept>
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#include <assert.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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static const DecoderPlugin *
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FindContainerDecoderPlugin(const char *suffix)
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{
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return decoder_plugins_find([suffix](const DecoderPlugin &plugin){
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return plugin.container_scan != nullptr &&
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plugin.SupportsSuffix(suffix);
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});
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}
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static const DecoderPlugin *
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FindContainerDecoderPlugin(Path path)
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{
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const auto utf8 = path.ToUTF8();
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if (utf8.empty())
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return nullptr;
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UriSuffixBuffer suffix_buffer;
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const char *const suffix = uri_get_suffix(utf8.c_str(), suffix_buffer);
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if (suffix == nullptr)
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return nullptr;
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return FindContainerDecoderPlugin(suffix);
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}
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int main(int argc, char **argv)
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try {
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if (argc != 2) {
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fprintf(stderr, "Usage: ContainerScan PATH\n");
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return EXIT_FAILURE;
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}
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const Path path = Path::FromFS(argv[1]);
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decoder_plugin_init_all();
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const auto *plugin = FindContainerDecoderPlugin(path);
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if (plugin == nullptr) {
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fprintf(stderr, "No decoder found for this file\n");
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return EXIT_FAILURE;
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}
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const auto v = plugin->container_scan(path);
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if (v.empty()) {
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fprintf(stderr, "File is not a container\n");
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return EXIT_FAILURE;
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}
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StdioOutputStream sos(stdout);
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BufferedOutputStream bos(sos);
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for (const auto &song : v)
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song_save(bos, song);
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bos.Flush();
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decoder_plugin_deinit_all();
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return EXIT_SUCCESS;
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} catch (const std::exception &e) {
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LogError(e);
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return EXIT_FAILURE;
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}
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