File indexing completed on 2024-05-12 05:58:16

 <?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.id3v1.php                                             //
 // module for writing ID3v1 tags                               //
 // dependencies: module.tag.id3v1.php                          //
 //                                                            ///
 /////////////////////////////////////////////////////////////////
 
 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v1.php', __FILE__, true);
 
 class getid3_write_id3v1
 {
   public $filename;
   public $filesize;
   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_id3v1() {
     return true;
   }
 
   public function WriteID3v1() {
     // File MUST be writeable - CHMOD(646) at least
     if (!empty($this->filename) && is_readable($this->filename) && is_writable($this->filename) && is_file($this->filename)) {
       $this->setRealFileSize();
       if (($this->filesize <= 0) || !getid3_lib::intValueSupported($this->filesize)) {
         $this->errors[] = 'Unable to WriteID3v1('.$this->filename.') because filesize ('.$this->filesize.') is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
         return false;
       }
       if ($fp_source = fopen($this->filename, 'r+b')) {
         fseek($fp_source, -128, SEEK_END);
         if (fread($fp_source, 3) == 'TAG') {
           fseek($fp_source, -128, SEEK_END); // overwrite existing ID3v1 tag
         } else {
           fseek($fp_source, 0, SEEK_END);    // append new ID3v1 tag
         }
         $this->tag_data['track'] = (isset($this->tag_data['track']) ? $this->tag_data['track'] : (isset($this->tag_data['track_number']) ? $this->tag_data['track_number'] : (isset($this->tag_data['tracknumber']) ? $this->tag_data['tracknumber'] : '')));
 
         $new_id3v1_tag_data = getid3_id3v1::GenerateID3v1Tag(
                             (isset($this->tag_data['title']  ) ? $this->tag_data['title']   : ''),
                             (isset($this->tag_data['artist'] ) ? $this->tag_data['artist']  : ''),
                             (isset($this->tag_data['album']  ) ? $this->tag_data['album']   : ''),
                             (isset($this->tag_data['year']   ) ? $this->tag_data['year']    : ''),
                             (isset($this->tag_data['genreid']) ? $this->tag_data['genreid'] : ''),
                             (isset($this->tag_data['comment']) ? $this->tag_data['comment'] : ''),
                             (isset($this->tag_data['track']  ) ? $this->tag_data['track']   : ''));
         fwrite($fp_source, $new_id3v1_tag_data, 128);
         fclose($fp_source);
         return true;
 
       } else {
         $this->errors[] = 'Could not fopen('.$this->filename.', "r+b")';
         return false;
       }
     }
     $this->errors[] = 'File is not writeable: '.$this->filename;
     return false;
   }
 
   public function FixID3v1Padding() {
     // ID3v1 data is supposed to be padded with NULL characters, but some taggers incorrectly use spaces
     // This function rewrites the ID3v1 tag with correct padding
 
     // Initialize getID3 engine
     $getID3 = new getID3;
     $getID3->option_tag_id3v2  = false;
     $getID3->option_tag_apetag = false;
     $getID3->option_tags_html  = false;
     $getID3->option_extra_info = false;
     $getID3->option_tag_id3v1  = true;
     $ThisFileInfo = $getID3->analyze($this->filename);
     if (isset($ThisFileInfo['tags']['id3v1'])) {
       foreach ($ThisFileInfo['tags']['id3v1'] as $key => $value) {
         $id3v1data[$key] = implode(',', $value);
       }
       $this->tag_data = $id3v1data;
       return $this->WriteID3v1();
     }
     return false;
   }
 
   public function RemoveID3v1() {
     // File MUST be writeable - CHMOD(646) at least
     if (!empty($this->filename) && is_readable($this->filename) && is_writable($this->filename) && is_file($this->filename)) {
       $this->setRealFileSize();
       if (($this->filesize <= 0) || !getid3_lib::intValueSupported($this->filesize)) {
         $this->errors[] = 'Unable to RemoveID3v1('.$this->filename.') because filesize ('.$this->filesize.') is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
         return false;
       }
       if ($fp_source = fopen($this->filename, 'r+b')) {
 
         fseek($fp_source, -128, SEEK_END);
         if (fread($fp_source, 3) == 'TAG') {
           ftruncate($fp_source, $this->filesize - 128);
         } else {
           // no ID3v1 tag to begin with - do nothing
         }
         fclose($fp_source);
         return true;
 
       } else {
         $this->errors[] = 'Could not fopen('.$this->filename.', "r+b")';
       }
     } else {
       $this->errors[] = $this->filename.' is not writeable';
     }
     return false;
   }
 
   public function setRealFileSize() {
     if (PHP_INT_MAX > 2147483647) {
       $this->filesize = filesize($this->filename);
       return true;
     }
     // 32-bit PHP will not return correct values for filesize() if file is >=2GB
     // but getID3->analyze() has workarounds to get actual filesize
     $getID3 = new getID3;
     $getID3->option_tag_id3v1  = false;
     $getID3->option_tag_id3v2  = false;
     $getID3->option_tag_apetag = false;
     $getID3->option_tags_html  = false;
     $getID3->option_extra_info = false;
     $ThisFileInfo = $getID3->analyze($this->filename);
     $this->filesize = $ThisFileInfo['filesize'];
     return true;
   }
 
 }