diff options
Diffstat (limited to 'vendor/lukasreschke/id3parser/src/getID3/getid3_handler.php')
| -rw-r--r-- | vendor/lukasreschke/id3parser/src/getID3/getid3_handler.php | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/vendor/lukasreschke/id3parser/src/getID3/getid3_handler.php b/vendor/lukasreschke/id3parser/src/getID3/getid3_handler.php new file mode 100644 index 000000000..654593349 --- /dev/null +++ b/vendor/lukasreschke/id3parser/src/getID3/getid3_handler.php @@ -0,0 +1,145 @@ +<?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 // +///////////////////////////////////////////////////////////////// + +namespace ID3Parser\getID3; + +abstract class getid3_handler { + + /** + * @var getID3 + */ + protected $getid3; // pointer + + protected $data_string_flag = false; // analyzing filepointer or string + protected $data_string = ''; // string to analyze + protected $data_string_position = 0; // seek position in string + protected $data_string_length = 0; // string length + + private $dependency_to = null; + + + public function __construct(getID3 $getid3, $call_module=null) { + $this->getid3 = $getid3; + + if ($call_module) { + $this->dependency_to = str_replace('getid3_', '', $call_module); + } + } + + + // Analyze from file pointer + abstract public function Analyze(); + + + // Analyze from string instead + public function AnalyzeString($string) { + // Enter string mode + $this->setStringMode($string); + + // Save info + $saved_avdataoffset = $this->getid3->info['avdataoffset']; + $saved_avdataend = $this->getid3->info['avdataend']; + $saved_filesize = (isset($this->getid3->info['filesize']) ? $this->getid3->info['filesize'] : null); // may be not set if called as dependency without openfile() call + + // Reset some info + $this->getid3->info['avdataoffset'] = 0; + $this->getid3->info['avdataend'] = $this->getid3->info['filesize'] = $this->data_string_length; + + // Analyze + $this->Analyze(); + + // Restore some info + $this->getid3->info['avdataoffset'] = $saved_avdataoffset; + $this->getid3->info['avdataend'] = $saved_avdataend; + $this->getid3->info['filesize'] = $saved_filesize; + + // Exit string mode + $this->data_string_flag = false; + } + + public function setStringMode($string) { + $this->data_string_flag = true; + $this->data_string = $string; + $this->data_string_length = strlen($string); + } + + protected function ftell() { + if ($this->data_string_flag) { + return $this->data_string_position; + } + return ftell($this->getid3->fp); + } + + protected function fread($bytes) { + if ($this->data_string_flag) { + $this->data_string_position += $bytes; + return substr($this->data_string, $this->data_string_position - $bytes, $bytes); + } + $pos = $this->ftell() + $bytes; + if (!getid3_lib::intValueSupported($pos)) { + throw new getid3_exception('cannot fread('.$bytes.' from '.$this->ftell().') because beyond PHP filesystem limit', 10); + } + return fread($this->getid3->fp, $bytes); + } + + protected function fseek($bytes, $whence=SEEK_SET) { + if ($this->data_string_flag) { + switch ($whence) { + case SEEK_SET: + $this->data_string_position = $bytes; + break; + + case SEEK_CUR: + $this->data_string_position += $bytes; + break; + + case SEEK_END: + $this->data_string_position = $this->data_string_length + $bytes; + break; + } + return 0; + } else { + $pos = $bytes; + if ($whence == SEEK_CUR) { + $pos = $this->ftell() + $bytes; + } elseif ($whence == SEEK_END) { + $pos = $this->getid3->info['filesize'] + $bytes; + } + if (!getid3_lib::intValueSupported($pos)) { + throw new getid3_exception('cannot fseek('.$pos.') because beyond PHP filesystem limit', 10); + } + } + return fseek($this->getid3->fp, $bytes, $whence); + } + + protected function feof() { + if ($this->data_string_flag) { + return $this->data_string_position >= $this->data_string_length; + } + return feof($this->getid3->fp); + } + + final protected function isDependencyFor($module) { + return $this->dependency_to == $module; + } + + protected function error($text) { + $this->getid3->info['error'][] = $text; + + return false; + } + + protected function warning($text) { + return $this->getid3->warning($text); + } + + protected function notice($text) { + // does nothing for now + } +} + |