1 | <?php |
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2 | // +----------------------------------------------------------------------+ |
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3 | // | PHP version 5 | |
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4 | // +----------------------------------------------------------------------+ |
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5 | // | Copyright (c) 2002-2006 James Heinrich, Allan Hansen | |
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6 | // +----------------------------------------------------------------------+ |
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7 | // | This source file is subject to version 2 of the GPL license, | |
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8 | // | that is bundled with this package in the file license.txt and is | |
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9 | // | available through the world-wide-web at the following url: | |
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10 | // | http://www.gnu.org/copyleft/gpl.html | |
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11 | // +----------------------------------------------------------------------+ |
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12 | // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org | |
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13 | // +----------------------------------------------------------------------+ |
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14 | // | Authors: James Heinrich <infoØgetid3*org> | |
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15 | // | Allan Hansen <ahØartemis*dk> | |
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16 | // +----------------------------------------------------------------------+ |
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17 | // | write.flac.php | |
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18 | // | writing module for flac tags | |
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19 | // | dependencies: metaflac binary. | |
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20 | // +----------------------------------------------------------------------+ |
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21 | // |
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22 | // $Id: write.flac.php 3318 2009-05-20 21:54:10Z vdigital $ |
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23 | |
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24 | |
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25 | class getid3_write_flac extends getid3_handler_write |
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26 | { |
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27 | |
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28 | public $comments = array (); |
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29 | |
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30 | |
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31 | public function __construct($filename) { |
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32 | |
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33 | if (ini_get('safe_mode')) { |
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34 | throw new getid3_exception('PHP running in Safe Mode (backtick operator not available). Cannot call metaflac binary.'); |
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35 | } |
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36 | |
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37 | static $initialized; |
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38 | if (!$initialized) { |
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39 | |
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40 | // check existance and version of metaflac |
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41 | if (!ereg('^metaflac ([0-9]+\.[0-9]+\.[0-9]+)', `metaflac --version`, $r)) { |
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42 | throw new getid3_exception('Fatal: metaflac binary not available.'); |
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43 | } |
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44 | if (strnatcmp($r[1], '1.1.1') == -1) { |
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45 | throw new getid3_exception('Fatal: metaflac version 1.1.1 or newer is required, available version: ' . $r[1] . '.'); |
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46 | } |
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47 | |
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48 | $initialized = true; |
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49 | } |
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50 | |
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51 | parent::__construct($filename); |
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52 | } |
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53 | |
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54 | |
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55 | public function read() { |
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56 | |
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57 | // read info with metaflac |
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58 | if (!$info = trim(`metaflac --no-utf8-convert --export-tags-to=- "$this->filename"`)) { |
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59 | return; |
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60 | } |
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61 | |
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62 | // process info |
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63 | foreach (explode("\n", $info) as $line) { |
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64 | |
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65 | $pos = strpos($line, '='); |
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66 | |
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67 | $key = strtolower(substr($line, 0, $pos)); |
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68 | $value = substr($line, $pos+1); |
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69 | |
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70 | $this->comments[$key][] = $value; |
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71 | } |
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72 | |
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73 | // convert single element arrays to string |
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74 | foreach ($this->comments as $key => $value) { |
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75 | if (sizeof($value) == 1) { |
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76 | $this->comments[$key] = $value[0]; |
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77 | } |
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78 | } |
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79 | |
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80 | return true; |
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81 | } |
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82 | |
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83 | |
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84 | public function write() { |
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85 | |
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86 | // create temp file with new comments |
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87 | $temp_filename = tempnam('*', 'getID3'); |
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88 | if (!$fp = @fopen($temp_filename, 'wb')) { |
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89 | throw new getid3_exception('Could not write temporary file.'); |
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90 | } |
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91 | fwrite($fp, $this->generate_tag()); |
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92 | fclose($fp); |
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93 | |
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94 | // write comments |
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95 | $this->save_permissions(); |
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96 | if ($error = `metaflac --no-utf8-convert --remove-all-tags --import-tags-from="$temp_filename" "$this->filename" 2>&1`) { |
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97 | throw new getid3_exception('Fatal: metaflac returned error: ' . $error); |
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98 | } |
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99 | $this->restore_permissions(); |
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100 | |
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101 | // success |
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102 | @unlink($temp_filename); |
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103 | return true; |
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104 | } |
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105 | |
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106 | |
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107 | protected function generate_tag() { |
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108 | |
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109 | if (!$this->comments) { |
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110 | throw new getid3_exception('Cannot write empty tag, use remove() instead.'); |
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111 | } |
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112 | |
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113 | $result = ''; |
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114 | |
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115 | foreach ($this->comments as $key => $values) { |
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116 | |
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117 | // A case-insensitive FLAC field name that may consist of ASCII 0x20 through 0x7D, 0x3D ('=') excluded. |
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118 | // ASCII 0x41 through 0x5A inclusive (A-Z) is to be considered equivalent to ASCII 0x61 through 0x7A inclusive (a-z). |
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119 | if (preg_match("/[^\x20-\x7D]|\x3D/", $key)) { |
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120 | throw new getid3_exception('Field name "' . $key . '" contains invalid character(s).'); |
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121 | } |
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122 | |
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123 | $key = strtolower($key); |
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124 | |
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125 | if (!is_array($values)) { |
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126 | $values = array ($values); |
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127 | } |
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128 | |
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129 | foreach ($values as $value) { |
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130 | if (strstr($value, "\n") || strstr($value, "\r")) { |
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131 | throw new getid3_exception('Multi-line comments not supported (value contains \n or \r)'); |
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132 | } |
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133 | $result .= $key . '=' . $value . "\n"; |
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134 | } |
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135 | } |
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136 | |
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137 | return $result; |
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138 | } |
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139 | |
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140 | |
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141 | public function remove() { |
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142 | |
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143 | $this->save_permissions(); |
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144 | if ($error = `metaflac --remove-all-tags "$this->filename" 2>&1`) { |
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145 | throw new getid3_exception('Fatal: metaflac returned error: ' . $error); |
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146 | } |
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147 | $this->restore_permissions(); |
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148 | |
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149 | // success when removing non-existant tag |
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150 | return true; |
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151 | } |
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152 | |
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153 | } |
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154 | |
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155 | ?> |
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