+++ /dev/null
-<?php
-/**
- * PHP-Gettext External Library: StreamReader classes
- *
- * @package External
- * @subpackage PHP-gettext
- *
- * @internal
- Copyright (c) 2003, 2005 Danilo Segan <danilo@kvota.net>.
-
- This file is part of PHP-gettext.
-
- PHP-gettext is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- PHP-gettext is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with PHP-gettext; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- */
-
-
-// Simple class to wrap file streams, string streams, etc.
-// seek is essential, and it should be byte stream
-class StreamReader {
- // should return a string [FIXME: perhaps return array of bytes?]
- function read($bytes) {
- return false;
- }
-
- // should return new position
- function seekto($position) {
- return false;
- }
-
- // returns current position
- function currentpos() {
- return false;
- }
-
- // returns length of entire stream (limit for seekto()s)
- function length() {
- return false;
- }
-}
-
-class StringReader {
- var $_pos;
- var $_str;
-
- function StringReader($str='') {
- $this->_str = $str;
- $this->_pos = 0;
- // If string functions are overloaded, we need to use the mb versions
- $this->is_overloaded = ((ini_get("mbstring.func_overload") & 2) != 0) && function_exists('mb_substr');
- }
-
- function _substr($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 currentpos() {
- return $this->_pos;
- }
-
- function length() {
- return $this->_strlen($this->_str);
- }
-}
-
-
-class FileReader {
- var $_pos;
- var $_fd;
- var $_length;
-
- function FileReader($filename) {
- if (file_exists($filename)) {
-
- $this->_length=filesize($filename);
- $this->_pos = 0;
- $this->_fd = fopen($filename,'rb');
- if (!$this->_fd) {
- $this->error = 3; // Cannot read file, probably permissions
- return false;
- }
- } else {
- $this->error = 2; // File doesn't exist
- return false;
- }
- }
-
- function read($bytes) {
- if ($bytes) {
- fseek($this->_fd, $this->_pos);
-
- // PHP 5.1.1 does not read more than 8192 bytes in one fread()
- // the discussions at PHP Bugs suggest it's the intended behaviour
- while ($bytes > 0) {
- $chunk = fread($this->_fd, $bytes);
- $data .= $chunk;
- $bytes -= strlen($chunk);
- }
- $this->_pos = ftell($this->_fd);
-
- return $data;
- } else return '';
- }
-
- function seekto($pos) {
- fseek($this->_fd, $pos);
- $this->_pos = ftell($this->_fd);
- return $this->_pos;
- }
-
- function currentpos() {
- return $this->_pos;
- }
-
- function length() {
- return $this->_length;
- }
-
- function close() {
- fclose($this->_fd);
- }
-
-}
-
-// Preloads entire file in memory first, then creates a StringReader
-// over it (it assumes knowledge of StringReader internals)
-class CachedFileReader extends StringReader {
- function CachedFileReader($filename) {
- parent::StringReader();
-
- if (file_exists($filename)) {
-
- $length=filesize($filename);
- $fd = fopen($filename,'rb');
-
- if (!$fd) {
- $this->error = 3; // Cannot read file, probably permissions
- return false;
- }
- $this->_str = fread($fd, $length);
- fclose($fd);
-
- } else {
- $this->error = 2; // File doesn't exist
- return false;
- }
- }
-}
-
-
-?>