3
Copyright (c) 2003, 2005, 2006, 2009 Danilo Segan <danilo@kvota.net>.
5
This file is part of PHP-gettext.
7
PHP-gettext is free software; you can redistribute it and/or modify
8
it under the terms of the GNU General Public License as published by
9
the Free Software Foundation; either version 2 of the License, or
10
(at your option) any later version.
12
PHP-gettext is distributed in the hope that it will be useful,
13
but WITHOUT ANY WARRANTY; without even the implied warranty of
14
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15
GNU General Public License for more details.
17
You should have received a copy of the GNU General Public License
18
along with PHP-gettext; if not, write to the Free Software
19
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24
// Simple class to wrap file streams, string streams, etc.
25
// seek is essential, and it should be byte stream
27
// should return a string [FIXME: perhaps return array of bytes?]
28
function read($bytes) {
32
// should return new position
33
function seekto($position) {
37
// returns current position
38
function currentpos() {
42
// returns length of entire stream (limit for seekto()s)
52
function StringReader($str='') {
57
function read($bytes) {
58
$data = substr($this->_str, $this->_pos, $bytes);
59
$this->_pos += $bytes;
60
if (strlen($this->_str)<$this->_pos)
61
$this->_pos = strlen($this->_str);
66
function seekto($pos) {
68
if (strlen($this->_str)<$this->_pos)
69
$this->_pos = strlen($this->_str);
73
function currentpos() {
78
return strlen($this->_str);
89
function FileReader($filename) {
90
if (file_exists($filename)) {
92
$this->_length=filesize($filename);
94
$this->_fd = fopen($filename,'rb');
96
$this->error = 3; // Cannot read file, probably permissions
100
$this->error = 2; // File doesn't exist
105
function read($bytes) {
107
fseek($this->_fd, $this->_pos);
109
// PHP 5.1.1 does not read more than 8192 bytes in one fread()
110
// the discussions at PHP Bugs suggest it's the intended behaviour
113
$chunk = fread($this->_fd, $bytes);
115
$bytes -= strlen($chunk);
117
$this->_pos = ftell($this->_fd);
123
function seekto($pos) {
124
fseek($this->_fd, $pos);
125
$this->_pos = ftell($this->_fd);
129
function currentpos() {
134
return $this->_length;
143
// Preloads entire file in memory first, then creates a StringReader
144
// over it (it assumes knowledge of StringReader internals)
145
class CachedFileReader extends StringReader {
146
function CachedFileReader($filename) {
147
if (file_exists($filename)) {
149
$length=filesize($filename);
150
$fd = fopen($filename,'rb');
153
$this->error = 3; // Cannot read file, probably permissions
156
$this->_str = fread($fd, $length);
160
$this->error = 2; // File doesn't exist