File indexing completed on 2024-05-12 17:26:02

 <?php
 /////////////////////////////////////////////////////////////////
 /// getID3() by James Heinrich <info@getid3.org>               //
 //  available at http://getid3.sourceforge.net                 //
 //            or http://www.getid3.org                         //
 //          also https://github.com/JamesHeinrich/getID3       //
 /////////////////////////////////////////////////////////////////
 // See readme.txt for more details                             //
 /////////////////////////////////////////////////////////////////
 //                                                             //
 // write.metaflac.php                                          //
 // module for writing metaflac tags                            //
 // dependencies: /helperapps/metaflac.exe                      //
 //                                                            ///
 /////////////////////////////////////////////////////////////////
 
 
 class getid3_write_metaflac
 {
 
   public $filename;
   public $tag_data;
   public $warnings = array(); // any non-critical errors will be stored here
   public $errors   = array(); // any critical errors will be stored here
 
   public function getid3_write_metaflac() {
     return true;
   }
 
   public function WriteMetaFLAC() {
 
     if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
       $this->errors[] = 'PHP running in Safe Mode (backtick operator not available) - cannot call metaflac, tags not written';
       return false;
     }
 
     // Create file with new comments
     $tempcommentsfilename = tempnam(GETID3_TEMP_DIR, 'getID3');
     if (is_writable($tempcommentsfilename) && is_file($tempcommentsfilename) && ($fpcomments = fopen($tempcommentsfilename, 'wb'))) {
       foreach ($this->tag_data as $key => $value) {
         foreach ($value as $commentdata) {
           fwrite($fpcomments, $this->CleanmetaflacName($key).'='.$commentdata."\n");
         }
       }
       fclose($fpcomments);
 
     } else {
       $this->errors[] = 'failed to open temporary tags file, tags not written - fopen("'.$tempcommentsfilename.'", "wb")';
       return false;
     }
 
     $oldignoreuserabort = ignore_user_abort(true);
     if (GETID3_OS_ISWINDOWS) {
 
       if (file_exists(GETID3_HELPERAPPSDIR.'metaflac.exe')) {
         //$commandline = '"'.GETID3_HELPERAPPSDIR.'metaflac.exe" --no-utf8-convert --remove-all-tags --import-tags-from="'.$tempcommentsfilename.'" "'.str_replace('/', '\\', $this->filename).'"';
         //  metaflac works fine if you copy-paste the above commandline into a command prompt,
         //  but refuses to work with `backtick` if there are "doublequotes" present around BOTH
         //  the metaflac pathname and the target filename. For whatever reason...??
         //  The solution is simply ensure that the metaflac pathname has no spaces,
         //  and therefore does not need to be quoted
 
         // On top of that, if error messages are not always captured properly under Windows
         // To at least see if there was a problem, compare file modification timestamps before and after writing
         clearstatcache();
         $timestampbeforewriting = filemtime($this->filename);
 
         $commandline = GETID3_HELPERAPPSDIR.'metaflac.exe --no-utf8-convert --remove-all-tags --import-tags-from='.escapeshellarg($tempcommentsfilename).' '.escapeshellarg($this->filename).' 2>&1';
         $metaflacError = `$commandline`;
 
         if (empty($metaflacError)) {
           clearstatcache();
           if ($timestampbeforewriting == filemtime($this->filename)) {
             $metaflacError = 'File modification timestamp has not changed - it looks like the tags were not written';
           }
         }
       } else {
         $metaflacError = 'metaflac.exe not found in '.GETID3_HELPERAPPSDIR;
       }
 
     } else {
 
       // It's simpler on *nix
       $commandline = 'metaflac --no-utf8-convert --remove-all-tags --import-tags-from='.escapeshellarg($tempcommentsfilename).' '.escapeshellarg($this->filename).' 2>&1';
       $metaflacError = `$commandline`;
 
     }
 
     // Remove temporary comments file
     unlink($tempcommentsfilename);
     ignore_user_abort($oldignoreuserabort);
 
     if (!empty($metaflacError)) {
 
       $this->errors[] = 'System call to metaflac failed with this message returned: '."\n\n".$metaflacError;
       return false;
 
     }
 
     return true;
   }
 
 
   public function DeleteMetaFLAC() {
 
     if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
       $this->errors[] = 'PHP running in Safe Mode (backtick operator not available) - cannot call metaflac, tags not deleted';
       return false;
     }
 
     $oldignoreuserabort = ignore_user_abort(true);
     if (GETID3_OS_ISWINDOWS) {
 
       if (file_exists(GETID3_HELPERAPPSDIR.'metaflac.exe')) {
         // To at least see if there was a problem, compare file modification timestamps before and after writing
         clearstatcache();
         $timestampbeforewriting = filemtime($this->filename);
 
         $commandline = GETID3_HELPERAPPSDIR.'metaflac.exe --remove-all-tags "'.$this->filename.'" 2>&1';
         $metaflacError = `$commandline`;
 
         if (empty($metaflacError)) {
           clearstatcache();
           if ($timestampbeforewriting == filemtime($this->filename)) {
             $metaflacError = 'File modification timestamp has not changed - it looks like the tags were not deleted';
           }
         }
       } else {
         $metaflacError = 'metaflac.exe not found in '.GETID3_HELPERAPPSDIR;
       }
 
     } else {
 
       // It's simpler on *nix
       $commandline = 'metaflac --remove-all-tags "'.$this->filename.'" 2>&1';
       $metaflacError = `$commandline`;
 
     }
 
     ignore_user_abort($oldignoreuserabort);
 
     if (!empty($metaflacError)) {
       $this->errors[] = 'System call to metaflac failed with this message returned: '."\n\n".$metaflacError;
       return false;
     }
     return true;
   }
 
 
   public function CleanmetaflacName($originalcommentname) {
     // A case-insensitive 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).
 
     // replace invalid chars with a space, return uppercase text
     // Thanks Chris Bolt <chris-getid3Øbolt*cx> for improving this function
     // note: *reg_replace() replaces nulls with empty string (not space)
     return strtoupper(preg_replace('#[^ -<>-}]#', ' ', str_replace("\x00", ' ', $originalcommentname)));
 
   }
 
 }