--- /dev/null
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Search_Lucene
+ * @subpackage Storage
+ * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Filesystem.php 16541 2009-07-07 06:59:03Z bkarwin $
+ */
+
+/** Zend_Search_Lucene_Storage_File */
+require_once 'Zend/Search/Lucene/Storage/File.php';
+
+/**
+ * @category Zend
+ * @package Zend_Search_Lucene
+ * @subpackage Storage
+ * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Search_Lucene_Storage_File_Filesystem extends Zend_Search_Lucene_Storage_File
+{
+ /**
+ * Resource of the open file
+ *
+ * @var resource
+ */
+ protected $_fileHandle;
+
+
+ /**
+ * Class constructor. Open the file.
+ *
+ * @param string $filename
+ * @param string $mode
+ */
+ public function __construct($filename, $mode='r+b')
+ {
+ global $php_errormsg;
+
+ if (strpos($mode, 'w') === false && !is_readable($filename)) {
+ // opening for reading non-readable file
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception('File \'' . $filename . '\' is not readable.');
+ }
+
+ $trackErrors = ini_get('track_errors');
+ ini_set('track_errors', '1');
+
+ $this->_fileHandle = @fopen($filename, $mode);
+
+ if ($this->_fileHandle === false) {
+ ini_set('track_errors', $trackErrors);
+ require_once 'Zend/Search/Lucene/Exception.php';
+ throw new Zend_Search_Lucene_Exception($php_errormsg);
+ }
+
+ ini_set('track_errors', $trackErrors);
+ }
+
+ /**
+ * Sets the file position indicator and advances the file pointer.
+ * The new position, measured in bytes from the beginning of the file,
+ * is obtained by adding offset to the position specified by whence,
+ * whose values are defined as follows:
+ * SEEK_SET - Set position equal to offset bytes.
+ * SEEK_CUR - Set position to current location plus offset.
+ * SEEK_END - Set position to end-of-file plus offset. (To move to
+ * a position before the end-of-file, you need to pass a negative value
+ * in offset.)
+ * SEEK_CUR is the only supported offset type for compound files
+ *
+ * Upon success, returns 0; otherwise, returns -1
+ *
+ * @param integer $offset
+ * @param integer $whence
+ * @return integer
+ */
+ public function seek($offset, $whence=SEEK_SET)
+ {
+ return fseek($this->_fileHandle, $offset, $whence);
+ }
+
+
+ /**
+ * Get file position.
+ *
+ * @return integer
+ */
+ public function tell()
+ {
+ return ftell($this->_fileHandle);
+ }
+
+ /**
+ * Flush output.
+ *
+ * Returns true on success or false on failure.
+ *
+ * @return boolean
+ */
+ public function flush()
+ {
+ return fflush($this->_fileHandle);
+ }
+
+ /**
+ * Close File object
+ */
+ public function close()
+ {
+ if ($this->_fileHandle !== null ) {
+ @fclose($this->_fileHandle);
+ $this->_fileHandle = null;
+ }
+ }
+
+ /**
+ * Get the size of the already opened file
+ *
+ * @return integer
+ */
+ public function size()
+ {
+ $position = ftell($this->_fileHandle);
+ fseek($this->_fileHandle, 0, SEEK_END);
+ $size = ftell($this->_fileHandle);
+ fseek($this->_fileHandle,$position);
+
+ return $size;
+ }
+
+ /**
+ * Read a $length bytes from the file and advance the file pointer.
+ *
+ * @param integer $length
+ * @return string
+ */
+ protected function _fread($length=1)
+ {
+ if ($length == 0) {
+ return '';
+ }
+
+ if ($length < 1024) {
+ return fread($this->_fileHandle, $length);
+ }
+
+ $data = '';
+ while ( $length > 0 && ($nextBlock = fread($this->_fileHandle, $length)) != false ) {
+ $data .= $nextBlock;
+ $length -= strlen($nextBlock);
+ }
+ return $data;
+ }
+
+
+ /**
+ * Writes $length number of bytes (all, if $length===null) to the end
+ * of the file.
+ *
+ * @param string $data
+ * @param integer $length
+ */
+ protected function _fwrite($data, $length=null)
+ {
+ if ($length === null ) {
+ fwrite($this->_fileHandle, $data);
+ } else {
+ fwrite($this->_fileHandle, $data, $length);
+ }
+ }
+
+ /**
+ * Lock file
+ *
+ * Lock type may be a LOCK_SH (shared lock) or a LOCK_EX (exclusive lock)
+ *
+ * @param integer $lockType
+ * @param boolean $nonBlockingLock
+ * @return boolean
+ */
+ public function lock($lockType, $nonBlockingLock = false)
+ {
+ if ($nonBlockingLock) {
+ return flock($this->_fileHandle, $lockType | LOCK_NB);
+ } else {
+ return flock($this->_fileHandle, $lockType);
+ }
+ }
+
+ /**
+ * Unlock file
+ *
+ * Returns true on success
+ *
+ * @return boolean
+ */
+ public function unlock()
+ {
+ if ($this->_fileHandle !== null ) {
+ return flock($this->_fileHandle, LOCK_UN);
+ } else {
+ return true;
+ }
+ }
+}
+
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