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/*
* Copyright (C) 2013,2015 Jens Georg <mail@jensge.org>.
*
* Author: Jens Georg <mail@jensge.org>
*
* This file is part of Rygel.
*
* Rygel is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Rygel 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
internal errordomain DVDParserError {
GENERAL;
}
internal class Rygel.DVDParser : GLib.Object {
/// URI to the image / toplevel directory
public File file { public get; construct; }
private File cache_file;
private static string? lsdvd_binary_path;
public DVDParser (File file) {
Object (file : file);
}
static construct {
string? path = Environment.find_program_in_path ("lsdvd");
if (path == null) {
var msg = _("Failed to find lsdvd binary in path. DVD extraction will not be available");
warning (msg);
}
DVDParser.lsdvd_binary_path = path;
}
public static string get_cache_path (string image_path) {
unowned string user_cache = Environment.get_user_cache_dir ();
var id = Checksum.compute_for_string (ChecksumType.MD5, image_path);
var cache_folder = Path.build_filename (user_cache,
"rygel",
"dvd-content");
DirUtils.create_with_parents (cache_folder, 0700);
return Path.build_filename (cache_folder, id);
}
public override void constructed () {
var path = DVDParser.get_cache_path (this.file.get_path ());
this.cache_file = File.new_for_path (path);
}
public async void run () throws Error {
if (DVDParser.lsdvd_binary_path == null) {
throw new DVDParserError.GENERAL ("No DVD extractor found");
}
yield this.get_information ();
}
public async Xml.Doc* get_information () throws Error {
if (!this.cache_file.query_exists ()) {
var launcher = new SubprocessLauncher (SubprocessFlags.STDERR_SILENCE);
launcher.set_stdout_file_path (this.cache_file.get_path ());
string[] args = {
DVDParser.lsdvd_binary_path,
"-Ox",
"-x",
"-q",
this.file.get_path (),
null
};
var process = launcher.spawnv (args);
yield process.wait_async ();
if (!(process.get_if_exited () &&
process.get_exit_status () == 0)) {
throw new DVDParserError.GENERAL ("lsdvd did die or file is not a DVD");
try {
this.cache_file.delete (null);
} catch (Error error) {
debug ("Failed to delete cache file: %s", error.message);
}
}
}
return Xml.Parser.read_file (this.cache_file.get_path (),
null,
Xml.ParserOption.NOERROR |
Xml.ParserOption.NOWARNING);
}
}
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