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| <?php | |
| namespace Puyo\File\Iterator; | |
| /** | |
| * ファイルを読み込んでバイト単位で返すIterator | |
| * | |
| * php-5.5以降であればGeneratorを使った方がパフォーマンスがよい。 | |
| * 5.5.11以降であればSplFileObjectもバイナリファイルに対応されている。 | |
| * | |
| * <code> | |
| * $it = ByteIterator53::createByPath($filepath); | |
| * foreach($it as $row) { | |
| * // do something. | |
| * } | |
| * </code> | |
| * @uses >= php-5.3 | |
| * @version 0.1.0 | |
| */ | |
| class ByteIterator53 extends FileIterator53 | |
| { | |
| /** @var mixed scalar */ | |
| protected $_key = -1; | |
| protected $bufferSize = 8192; | |
| /** | |
| * @param int $size byte | |
| * @return $this | |
| */ | |
| public function setBufferSize($size) { | |
| $this->bufferSize = $size; | |
| return $this; | |
| } | |
| public function next() { | |
| $this->_key++; | |
| $this->buf = fread($this->fp, $this->bufferSize); | |
| return $this->buf; | |
| } | |
| public function rewind() { | |
| $result = rewind($this->fp); | |
| $this->_key = -1; | |
| $this->next(); | |
| return $result; | |
| } | |
| public function valid() { | |
| if(is_resource($this->fp) && $this->buf !== '') { | |
| return true; | |
| } | |
| return false; | |
| } | |
| } |