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<?php |
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namespace WebStream\IO\Writer; |
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use WebStream\IO\File; |
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use WebStream\IO\FileOutputStream; |
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use WebStream\Exception\Extend\IOException; |
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/** |
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* SimpleFileWriter |
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* OutputStreamWriterを継承しているが、write以外の機能を無効にする |
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* @author Ryuichi TANAKA. |
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* @since 2016/02/25 |
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* @version 0.7 |
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*/ |
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class SimpleFileWriter extends OutputStreamWriter |
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{ |
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/** |
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* @var string ファイルパス |
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*/ |
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private $filepath; |
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/** |
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* @var int バッファリングサイズ |
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*/ |
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private $bufferSize; |
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/** |
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* @var string 書き込みモード |
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*/ |
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private $mode; |
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/** |
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* constructor |
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* @param string $filepath ファイルパス |
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* @param int $bufferSize バッファリングサイズ |
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*/ |
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public function __construct($filepath, $bufferSize = null) |
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{ |
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$dirname = dirname($filepath); |
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$dir = new File($dirname); |
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if (!$dir->isWritable()) { |
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throw new IOException("Cannot writable: " . $filepath); |
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} |
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$this->filepath = $filepath; |
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$this->bufferSize = $bufferSize; |
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$this->mode = file_exists($this->filepath) ? 'ab' : 'wb'; |
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} |
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/** |
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* ファイルに書き込む |
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* ファイルが存在する場合、常に追記モード |
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* @param mixed $data 書き込みデータ |
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*/ |
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public function write($data) |
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{ |
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$stream = fopen($this->filepath, $this->mode); |
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if ($this->bufferSize !== null && stream_set_write_buffer($stream, $this->bufferSize) !== 0) { |
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throw new IOException("Failed to change the buffer size."); |
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} |
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if (!is_resource($stream) || $stream === false) { |
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throw new IOException("Unable open " . $this->filepath); |
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} |
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if (!flock($stream, LOCK_EX | LOCK_NB)) { |
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throw new IOException("Cannot lock file: " . $this->filepath); |
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} |
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if (fwrite($stream, $data) === false) { |
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flock($stream, LOCK_UN); |
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fclose($stream); |
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throw new IOException("Failed to write stream."); |
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} |
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fflush($stream); |
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flock($stream, LOCK_UN); |
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fclose($stream); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function close() |
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{ |
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// Nothing to do |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function flush() |
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{ |
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// Nothing to do |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function newLine() |
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{ |
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$this->write(PHP_EOL); |
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} |
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} |
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webstream-framework /
ClassLoader
