101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
/*
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* Copyright (C) 2003-2014 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 "ArchiveInputPlugin.hxx"
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#include "archive/ArchiveDomain.hxx"
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#include "archive/ArchiveLookup.hxx"
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#include "archive/ArchiveList.hxx"
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#include "archive/ArchivePlugin.hxx"
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#include "archive/ArchiveFile.hxx"
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#include "../InputPlugin.hxx"
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#include "fs/Traits.hxx"
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#include "fs/Path.hxx"
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#include "util/Alloc.hxx"
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#include "Log.hxx"
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#include <stdlib.h>
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/**
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* select correct archive plugin to handle the input stream
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* may allow stacking of archive plugins. for example for handling
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* tar.gz a gzip handler opens file (through inputfile stream)
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* then it opens a tar handler and sets gzip inputstream as
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* parent_stream so tar plugin fetches file data from gzip
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* plugin and gzip fetches file from disk
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*/
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static InputStream *
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input_archive_open(const char *pathname,
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Mutex &mutex, Cond &cond,
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Error &error)
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{
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const ArchivePlugin *arplug;
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InputStream *is;
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if (!PathTraitsFS::IsAbsolute(pathname))
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return nullptr;
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char *pname = strdup(pathname);
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// archive_lookup will modify pname when true is returned
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const char *archive, *filename, *suffix;
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if (!archive_lookup(pname, &archive, &filename, &suffix)) {
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FormatDebug(archive_domain,
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"not an archive, lookup %s failed", pname);
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free(pname);
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return nullptr;
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}
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//check which archive plugin to use (by ext)
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arplug = archive_plugin_from_suffix(suffix);
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if (!arplug) {
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FormatWarning(archive_domain,
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"can't handle archive %s", archive);
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free(pname);
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return nullptr;
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}
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auto file = archive_file_open(arplug, Path::FromFS(archive), error);
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if (file == nullptr) {
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free(pname);
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return nullptr;
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}
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//setup fileops
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is = file->OpenStream(filename, mutex, cond, error);
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free(pname);
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file->Close();
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return is;
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}
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const InputPlugin input_plugin_archive = {
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"archive",
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nullptr,
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nullptr,
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input_archive_open,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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nullptr,
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};
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