Wordpress 2.8
[autoinstalls/wordpress.git] / wp-includes / pomo / mo.php
1 <?php
2 /**
3  * Class for working with MO files
4  *
5  * @version $Id: mo.php 33 2009-02-16 09:33:39Z nbachiyski $
6  * @package pomo
7  * @subpackage mo
8  */
9
10 require_once dirname(__FILE__) . '/translations.php';
11 require_once dirname(__FILE__) . '/streams.php';
12
13 class MO extends Translations {
14
15         var $_nplurals = 2;
16
17         function set_header($header, $value) {
18                 parent::set_header($header, $value);
19                 if ('Plural-Forms' == $header)
20                         $this->_gettext_select_plural_form = $this->_make_gettext_select_plural_form($value);
21         }
22
23         /**
24          * Fills up with the entries from MO file $filename
25          *
26          * @param string $filename MO file to load
27          */
28         function import_from_file($filename) {
29                 $reader = new POMO_CachedIntFileReader($filename);
30                 if (isset($reader->error)) {
31                         return false;
32                 }
33                 return $this->import_from_reader($reader);
34         }
35
36         function get_byteorder($magic) {
37
38                 // The magic is 0x950412de
39
40                 // bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565
41                 $magic_little = (int) - 1794895138;
42                 $magic_little_64 = (int) 2500072158;
43                 // 0xde120495
44                 $magic_big = ((int) - 569244523) && 0xFFFFFFFF;
45
46                 if ($magic_little == $magic || $magic_little_64 == $magic) {
47                         return 'little';
48                 } else if ($magic_big == $magic) {
49                         return 'big';
50                 } else {
51                         return false;
52                 }
53         }
54
55         function import_from_reader($reader) {
56                 $reader->setEndian('little');
57                 $endian = MO::get_byteorder($reader->readint32());
58                 if (false === $endian) {
59                         return false;
60                 }
61                 $reader->setEndian($endian);
62
63                 $revision = $reader->readint32();
64                 $total = $reader->readint32();
65                 // get addresses of array of lenghts and offsets for original string and translations
66                 $originals_lo_addr = $reader->readint32();
67                 $translations_lo_addr = $reader->readint32();
68
69                 $reader->seekto($originals_lo_addr);
70                 $originals_lo = $reader->readint32array($total * 2); // each of
71                 $reader->seekto($translations_lo_addr);
72                 $translations_lo = $reader->readint32array($total * 2);
73
74                 $length = create_function('$i', 'return $i * 2 + 1;');
75                 $offset = create_function('$i', 'return $i * 2 + 2;');
76
77                 for ($i = 0; $i < $total; ++$i) {
78                         $reader->seekto($originals_lo[$offset($i)]);
79                         $original = $reader->read($originals_lo[$length($i)]);
80                         $reader->seekto($translations_lo[$offset($i)]);
81                         $translation = $reader->read($translations_lo[$length($i)]);
82                         if ('' == $original) {
83                                 $this->set_headers($this->make_headers($translation));
84                         } else {
85                                 $this->add_entry($this->make_entry($original, $translation));
86                         }
87                 }
88                 return true;
89         }
90
91         function make_headers($translation) {
92                 $headers = array();
93                 $lines = explode("\n", $translation);
94                 foreach($lines as $line) {
95                         $parts = explode(':', $line, 2);
96                         if (!isset($parts[1])) continue;
97                         $headers[trim($parts[0])] = trim($parts[1]);
98                 }
99                 return $headers;
100         }
101
102         /**
103          * @static
104          */
105         function &make_entry($original, $translation) {
106                 $args = array();
107                 // look for context
108                 $parts = explode(chr(4), $original);
109                 if (isset($parts[1])) {
110                         $original = $parts[1];
111                         $args['context'] = $parts[0];
112                 }
113                 // look for plural original
114                 $parts = explode(chr(0), $original);
115                 $args['singular'] = $parts[0];
116                 if (isset($parts[1])) {
117                         $args['plural'] = $parts[1];
118                 }
119                 // plural translations are also separated by \0
120                 $args['translations'] = explode(chr(0), $translation);
121                 $entry = & new Translation_Entry($args);
122                 return $entry;
123         }
124
125         function select_plural_form($count) {
126                 return $this->gettext_select_plural_form($count);
127         }
128
129         function get_plural_forms_count() {
130                 return $this->_nplurals;
131         }
132
133
134 }
135 ?>