diff options
Diffstat (limited to 'modules/getid3/write.vorbis.php')
| -rw-r--r-- | modules/getid3/write.vorbis.php | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/modules/getid3/write.vorbis.php b/modules/getid3/write.vorbis.php new file mode 100644 index 00000000..3f17958c --- /dev/null +++ b/modules/getid3/write.vorbis.php @@ -0,0 +1,166 @@ +<?php +// +----------------------------------------------------------------------+ +// | PHP version 5 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen | +// +----------------------------------------------------------------------+ +// | This source file is subject to version 2 of the GPL license, | +// | that is bundled with this package in the file license.txt and is | +// | available through the world-wide-web at the following url: | +// | http://www.gnu.org/copyleft/gpl.html | +// +----------------------------------------------------------------------+ +// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org | +// +----------------------------------------------------------------------+ +// | Authors: James Heinrich <infoØgetid3*org> | +// | Allan Hansen <ahØartemis*dk> | +// +----------------------------------------------------------------------+ +// | write.vorbis.php | +// | writing module for vorbis tags | +// | dependencies: vorbiscomment binary. | +// +----------------------------------------------------------------------+ +// +// $Id: write.vorbis.php,v 1.6 2006/12/03 20:02:25 ah Exp $ + + +class getid3_write_vorbis extends getid3_handler_write +{ + + public $comments = array (); + + + public function __construct($filename) { + + if (ini_get('safe_mode')) { + throw new getid3_exception('PHP running in Safe Mode (backtick operator not available). Cannot call vorbiscomment binary.'); + } + + static $initialized; + if (!$initialized) { + + // check existance and version of vorbiscomment + if (!ereg('^Vorbiscomment ([0-9]+\.[0-9]+\.[0-9]+)', `vorbiscomment --version 2>&1`, $r)) { + throw new getid3_exception('Fatal: vorbiscomment binary not available.'); + } + if (strnatcmp($r[1], '1.0.0') == -1) { + throw new getid3_exception('Fatal: vorbiscomment version 1.0.0 or newer is required, available version: ' . $r[1] . '.'); + } + + $initialized = true; + } + + parent::__construct($filename); + } + + + public function read() { + + // read info with vorbiscomment + if (!$info = trim(`vorbiscomment -l "$this->filename"`)) { + return; + } + + // process info + foreach (explode("\n", $info) as $line) { + + $pos = strpos($line, '='); + + $key = strtolower(substr($line, 0, $pos)); + $value = substr($line, $pos+1); + + $this->comments[$key][] = $value; + } + + // convert single element arrays to string + foreach ($this->comments as $key => $value) { + if (sizeof($value) == 1) { + $this->comments[$key] = $value[0]; + } + } + + return true; + } + + + public function write() { + + // create temp file with new comments + $temp_filename = tempnam('*', 'getID3'); + if (!$fp = @fopen($temp_filename, 'wb')) { + throw new getid3_exception('Could not write temporary file.'); + } + fwrite($fp, $this->generate_tag()); + fclose($fp); + + // write comments + $this->save_permissions(); + if ($error = `vorbiscomment -w --raw -c "$temp_filename" "$this->filename" 2>&1`) { + throw new getid3_exception('Fatal: vorbiscomment returned error: ' . $error); + } + $this->restore_permissions(); + + // success + @unlink($temp_filename); + return true; + } + + + protected function generate_tag() { + + if (!$this->comments) { + throw new getid3_exception('Cannot write empty tag, use remove() instead.'); + } + + $result = ''; + + foreach ($this->comments as $key => $values) { + + // A case-insensitive vobiscomment field name that may consist of ASCII 0x20 through 0x7D, 0x3D ('=') excluded. + // ASCII 0x41 through 0x5A inclusive (A-Z) is to be considered equivalent to ASCII 0x61 through 0x7A inclusive (a-z). + if (preg_match("/[^\x20-\x7D]|\x3D/", $key)) { + throw new getid3_exception('Field name "' . $key . '" contains invalid character(s).'); + } + + $key = strtolower($key); + + if (!is_array($values)) { + $values = array ($values); + } + + foreach ($values as $value) { + if (strstr($value, "\n") || strstr($value, "\r")) { + throw new getid3_exception('Multi-line comments not supported (value contains \n or \r)'); + } + $result .= $key . '=' . $value . "\n"; + } + + } + + return $result; + } + + + public function remove() { + + // create temp file with new comments + $temp_filename = tempnam('*', 'getID3'); + if (!$fp = @fopen($temp_filename, 'wb')) { + throw new getid3_exception('Could not write temporary file.'); + } + fwrite($fp, ''); + fclose($fp); + + // write comments + $this->save_permissions(); + if ($error = `vorbiscomment -w --raw -c "$temp_filename" "$this->filename" 2>&1`) { + throw new getid3_exception('Fatal: vorbiscomment returned error: ' . $error); + } + $this->restore_permissions(); + + // success when removing non-existant tag + @unlink($temp_filename); + return true; + } + +} + +?> |