--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/pomo/streams.php	Wed Dec 23 17:55:33 2009 +0000
@@ -0,0 +1,137 @@
+<?php
+/**
+ * Classes, which help reading streams of data from files.
+ * Based on the classes from Danilo Segan <danilo@kvota.net>
+ *
+ * @version $Id: streams.php 138 2009-06-23 13:22:09Z nbachiyski $
+ * @package pomo
+ * @subpackage streams
+ */
+
+
+/**
+ * Provides file-like methods for manipulating a string instead
+ * of a physical file.
+ */
+class POMO_StringReader {
+  var $_pos;
+  var $_str;
+
+	function POMO_StringReader($str = '') {
+		$this->_str = $str;
+		$this->_pos = 0;
+		$this->is_overloaded = ((ini_get("mbstring.func_overload") & 2) != 0) && function_exists('mb_substr');
+	}
+
+	function _substr($string, $start, $length) {
+		if ($this->is_overloaded) {
+			return mb_substr($string,$start,$length,'ascii');
+		} else {
+			return substr($string,$start,$length);
+		}
+	}
+	
+	function _strlen($string) {
+		if ($this->is_overloaded) {
+			return mb_strlen($string,'ascii');
+		} else {
+			return strlen($string);
+		}
+	}
+
+	function read($bytes) {
+		$data = $this->_substr($this->_str, $this->_pos, $bytes);
+		$this->_pos += $bytes;
+		if ($this->_strlen($this->_str) < $this->_pos) $this->_pos = $this->_strlen($this->_str);
+		return $data;
+	}
+
+	function seekto($pos) {
+		$this->_pos = $pos;
+		if ($this->_strlen($this->_str) < $this->_pos) $this->_pos = $this->_strlen($this->_str);
+		return $this->_pos;
+	}
+
+	function pos() {
+		return $this->_pos;
+	}
+
+	function length() {
+		return $this->_strlen($this->_str);
+	}
+
+}
+
+/**
+ * Reads the contents of the file in the beginning.
+ */
+class POMO_CachedFileReader extends POMO_StringReader {
+	function POMO_CachedFileReader($filename) {
+		parent::POMO_StringReader();
+		$this->_str = file_get_contents($filename);
+		if (false === $this->_str)
+			return false;
+		$this->_pos = 0;
+	}
+}
+
+/**
+ * Allows reading integers from a file.
+ */
+class POMO_CachedIntFileReader extends POMO_CachedFileReader {
+
+	var $endian = 'little';
+
+	/**
+	 * Opens a file and caches it.
+	 *
+	 * @param $filename string name of the file to be opened
+	 * @param $endian string endianness of the words in the file, allowed
+	 * 	values are 'little' or 'big'. Default value is 'little'
+	 */
+	function POMO_CachedIntFileReader($filename, $endian = 'little') {
+		$this->endian = $endian;
+		parent::POMO_CachedFileReader($filename);
+	}
+
+	/**
+	 * Sets the endianness of the file.
+	 *
+	 * @param $endian string 'big' or 'little'
+	 */
+	function setEndian($endian) {
+		$this->endian = $endian;
+	}
+
+	/**
+	 * Reads a 32bit Integer from the Stream
+	 *
+	 * @return mixed The integer, corresponding to the next 32 bits from
+	 * 	the stream of false if there are not enough bytes or on error
+	 */
+	function readint32() {
+		$bytes = $this->read(4);
+		if (4 != $this->_strlen($bytes))
+			return false;
+		$endian_letter = ('big' == $this->endian)? 'N' : 'V';
+		$int = unpack($endian_letter, $bytes);
+		return array_shift($int);
+	}
+
+	/**
+	 * Reads an array of 32-bit Integers from the Stream
+	 *
+	 * @param integer count How many elements should be read
+	 * @return mixed Array of integers or false if there isn't
+	 * 	enough data or on error
+	 */
+	function readint32array($count) {
+		$bytes = $this->read(4 * $count);
+		if (4*$count != $this->_strlen($bytes))
+			return false;
+		$endian_letter = ('big' == $this->endian)? 'N' : 'V';
+		return unpack($endian_letter.$count, $bytes);
+	}
+}
+
+?>