Projects : mp-wp : mp-wp_genesis
1 | <?php |
2 | /** |
3 | * PHP-Gettext External Library: StreamReader classes |
4 | * |
5 | * @package External |
6 | * @subpackage PHP-gettext |
7 | * |
8 | * @internal |
9 | Copyright (c) 2003, 2005 Danilo Segan <danilo@kvota.net>. |
10 | |
11 | This file is part of PHP-gettext. |
12 | |
13 | PHP-gettext is free software; you can redistribute it and/or modify |
14 | it under the terms of the GNU General Public License as published by |
15 | the Free Software Foundation; either version 2 of the License, or |
16 | (at your option) any later version. |
17 | |
18 | PHP-gettext is distributed in the hope that it will be useful, |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
21 | GNU General Public License for more details. |
22 | |
23 | You should have received a copy of the GNU General Public License |
24 | along with PHP-gettext; if not, write to the Free Software |
25 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
26 | |
27 | */ |
28 | |
29 | |
30 | // Simple class to wrap file streams, string streams, etc. |
31 | // seek is essential, and it should be byte stream |
32 | class StreamReader { |
33 | // should return a string [FIXME: perhaps return array of bytes?] |
34 | function read($bytes) { |
35 | return false; |
36 | } |
37 | |
38 | // should return new position |
39 | function seekto($position) { |
40 | return false; |
41 | } |
42 | |
43 | // returns current position |
44 | function currentpos() { |
45 | return false; |
46 | } |
47 | |
48 | // returns length of entire stream (limit for seekto()s) |
49 | function length() { |
50 | return false; |
51 | } |
52 | } |
53 | |
54 | class StringReader { |
55 | var $_pos; |
56 | var $_str; |
57 | |
58 | function StringReader($str='') { |
59 | $this->_str = $str; |
60 | $this->_pos = 0; |
61 | // If string functions are overloaded, we need to use the mb versions |
62 | $this->is_overloaded = ((ini_get("mbstring.func_overload") & 2) != 0) && function_exists('mb_substr'); |
63 | } |
64 | |
65 | function _substr($string, $start, $length) { |
66 | if ($this->is_overloaded) { |
67 | return mb_substr($string,$start,$length,'ascii'); |
68 | } else { |
69 | return substr($string,$start,$length); |
70 | } |
71 | } |
72 | |
73 | function _strlen($string) { |
74 | if ($this->is_overloaded) { |
75 | return mb_strlen($string,'ascii'); |
76 | } else { |
77 | return strlen($string); |
78 | } |
79 | } |
80 | |
81 | function read($bytes) { |
82 | $data = $this->_substr($this->_str, $this->_pos, $bytes); |
83 | $this->_pos += $bytes; |
84 | if ($this->_strlen($this->_str)<$this->_pos) |
85 | $this->_pos = $this->_strlen($this->_str); |
86 | |
87 | return $data; |
88 | } |
89 | |
90 | function seekto($pos) { |
91 | $this->_pos = $pos; |
92 | if ($this->_strlen($this->_str)<$this->_pos) |
93 | $this->_pos = $this->_strlen($this->_str); |
94 | return $this->_pos; |
95 | } |
96 | |
97 | function currentpos() { |
98 | return $this->_pos; |
99 | } |
100 | |
101 | function length() { |
102 | return $this->_strlen($this->_str); |
103 | } |
104 | } |
105 | |
106 | |
107 | class FileReader { |
108 | var $_pos; |
109 | var $_fd; |
110 | var $_length; |
111 | |
112 | function FileReader($filename) { |
113 | if (file_exists($filename)) { |
114 | |
115 | $this->_length=filesize($filename); |
116 | $this->_pos = 0; |
117 | $this->_fd = fopen($filename,'rb'); |
118 | if (!$this->_fd) { |
119 | $this->error = 3; // Cannot read file, probably permissions |
120 | return false; |
121 | } |
122 | } else { |
123 | $this->error = 2; // File doesn't exist |
124 | return false; |
125 | } |
126 | } |
127 | |
128 | function read($bytes) { |
129 | if ($bytes) { |
130 | fseek($this->_fd, $this->_pos); |
131 | |
132 | // PHP 5.1.1 does not read more than 8192 bytes in one fread() |
133 | // the discussions at PHP Bugs suggest it's the intended behaviour |
134 | while ($bytes > 0) { |
135 | $chunk = fread($this->_fd, $bytes); |
136 | $data .= $chunk; |
137 | $bytes -= strlen($chunk); |
138 | } |
139 | $this->_pos = ftell($this->_fd); |
140 | |
141 | return $data; |
142 | } else return ''; |
143 | } |
144 | |
145 | function seekto($pos) { |
146 | fseek($this->_fd, $pos); |
147 | $this->_pos = ftell($this->_fd); |
148 | return $this->_pos; |
149 | } |
150 | |
151 | function currentpos() { |
152 | return $this->_pos; |
153 | } |
154 | |
155 | function length() { |
156 | return $this->_length; |
157 | } |
158 | |
159 | function close() { |
160 | fclose($this->_fd); |
161 | } |
162 | |
163 | } |
164 | |
165 | // Preloads entire file in memory first, then creates a StringReader |
166 | // over it (it assumes knowledge of StringReader internals) |
167 | class CachedFileReader extends StringReader { |
168 | function CachedFileReader($filename) { |
169 | parent::StringReader(); |
170 | |
171 | if (file_exists($filename)) { |
172 | |
173 | $length=filesize($filename); |
174 | $fd = fopen($filename,'rb'); |
175 | |
176 | if (!$fd) { |
177 | $this->error = 3; // Cannot read file, probably permissions |
178 | return false; |
179 | } |
180 | $this->_str = fread($fd, $length); |
181 | fclose($fd); |
182 | |
183 | } else { |
184 | $this->error = 2; // File doesn't exist |
185 | return false; |
186 | } |
187 | } |
188 | } |
189 | |
190 | |
191 | ?> |