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authorAntonio Gallo <tonicucoz@gmail.com>2010-10-17 13:29:57 +0000
committerAntonio Gallo <tonicucoz@gmail.com>2010-10-17 13:29:57 +0000
commit232aa1924c8c0f10d87b210b46c9f061af5c844c (patch)
tree2351f2aaff7ad244f60358954e4711692fb8aadc /h-source/External/swiftmailer/lib/classes/Swift/ByteStream/FileByteStream.php
parenta17e3e0495bee3705d3c1e5ead2db1a8359e64e9 (diff)
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+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+//@require 'Swift/ByteStream/AbstractFilterableInputStream.php';
+//@require 'Swift/InputByteStream.php';
+//@require 'Swift/FileStream.php';
+//@require 'Swift/IoException.php';
+
+/**
+ * Allows reading and writing of bytes to and from a file.
+ * @package Swift
+ * @subpackage ByteStream
+ * @author Chris Corbyn
+ */
+class Swift_ByteStream_FileByteStream
+ extends Swift_ByteStream_AbstractFilterableInputStream
+ implements Swift_FileStream
+{
+
+ /** The internal pointer offset */
+ private $_offset = 0;
+
+ /** The path to the file */
+ private $_path;
+
+ /** The mode this file is opened in for writing */
+ private $_mode;
+
+ /** A lazy-loaded resource handle for reading the file */
+ private $_reader;
+
+ /** A lazy-loaded resource handle for writing the file */
+ private $_writer;
+
+ /** If magic_quotes_runtime is on, this will be true */
+ private $_quotes = false;
+
+ /**
+ * Create a new FileByteStream for $path.
+ * @param string $path
+ * @param string $writable if true
+ */
+ public function __construct($path, $writable = false)
+ {
+ $this->_path = $path;
+ $this->_mode = $writable ? 'w+b' : 'rb';
+ $this->_quotes = get_magic_quotes_runtime();
+ }
+
+ /**
+ * Get the complete path to the file.
+ * @return string
+ */
+ public function getPath()
+ {
+ return $this->_path;
+ }
+
+ /**
+ * Reads $length bytes from the stream into a string and moves the pointer
+ * through the stream by $length. If less bytes exist than are requested the
+ * remaining bytes are given instead. If no bytes are remaining at all, boolean
+ * false is returned.
+ * @param int $length
+ * @return string
+ * @throws Swift_IoException
+ */
+ public function read($length)
+ {
+ $fp = $this->_getReadHandle();
+ if (!feof($fp))
+ {
+ if ($this->_quotes)
+ {
+ set_magic_quotes_runtime(0);
+ }
+ $bytes = fread($fp, $length);
+ if ($this->_quotes)
+ {
+ set_magic_quotes_runtime(1);
+ }
+ $this->_offset = ftell($fp);
+ return $bytes;
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ /**
+ * Move the internal read pointer to $byteOffset in the stream.
+ * @param int $byteOffset
+ * @return boolean
+ */
+ public function setReadPointer($byteOffset)
+ {
+ if (isset($this->_reader))
+ {
+ fseek($this->_reader, $byteOffset, SEEK_SET);
+ }
+ $this->_offset = $byteOffset;
+ }
+
+ // -- Private methods
+
+ /** Just write the bytes to the file */
+ protected function _commit($bytes)
+ {
+ fwrite($this->_getWriteHandle(), $bytes);
+ $this->_resetReadHandle();
+ }
+
+ /** Not used */
+ protected function _flush()
+ {
+ }
+
+ /** Get the resource for reading */
+ private function _getReadHandle()
+ {
+ if (!isset($this->_reader))
+ {
+ if (!$this->_reader = fopen($this->_path, 'rb'))
+ {
+ throw new Swift_IoException(
+ 'Unable to open file for reading [' . $this->_path . ']'
+ );
+ }
+ fseek($this->_reader, $this->_offset, SEEK_SET);
+ }
+ return $this->_reader;
+ }
+
+ /** Get the resource for writing */
+ private function _getWriteHandle()
+ {
+ if (!isset($this->_writer))
+ {
+ if (!$this->_writer = fopen($this->_path, $this->_mode))
+ {
+ throw new Swift_IoException(
+ 'Unable to open file for writing [' . $this->_path . ']'
+ );
+ }
+ }
+ return $this->_writer;
+ }
+
+ /** Force a reload of the resource for writing */
+ private function _resetWriteHandle()
+ {
+ if (isset($this->_writer))
+ {
+ fclose($this->_writer);
+ $this->_writer = null;
+ }
+ }
+
+ /** Force a reload of the resource for reading */
+ private function _resetReadHandle()
+ {
+ if (isset($this->_reader))
+ {
+ fclose($this->_reader);
+ $this->_reader = null;
+ }
+ }
+
+}