aboutsummaryrefslogtreecommitdiffstats
path: root/include/php-gettext/gettext.inc.php
blob: 69d4d7c2a2afd8e77426720566ca0ea4bb33177a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
<?php
/*
   Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
   Copyright (c) 2009 Danilo Segan <danilo@kvota.net>

   Drop in replacement for native gettext.

   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

*/
/*
LC_CTYPE        0
LC_NUMERIC      1
LC_TIME         2
LC_COLLATE      3
LC_MONETARY     4
LC_MESSAGES     5
LC_ALL          6
*/


// LC_MESSAGES is not available if php-gettext is not loaded
// while the other constants are already available from session extension.
if (!defined('LC_MESSAGES')) {
  define('LC_MESSAGES',	5);
}

require('streams.php');
require('gettext.php');


// Variables

global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
$text_domains = array();
$default_domain = 'messages';
$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
$EMULATEGETTEXT = 0;
$CURRENTLOCALE = '';

/* Class to hold a single domain included in $text_domains. */
class domain {
  var $l10n;
  var $path;
  var $codeset;
}

// Utility functions

/**
 * Return a list of locales to try for any POSIX-style locale specification.
 */
function get_list_of_locales($locale) {
  /* Figure out all possible locale names and start with the most
   * specific ones.  I.e. for sr_CS.UTF-8@latin, look through all of
   * sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
   */
  $locale_names = array();
  $lang = NULL;
  $country = NULL;
  $charset = NULL;
  $modifier = NULL;
  if ($locale) {
    if (preg_match("/^(?P<lang>[a-z]{2,3})"              // language code
                   ."(?:_(?P<country>[A-Z]{2}))?"           // country code
                   ."(?:\.(?P<charset>[-A-Za-z0-9_]+))?"    // charset
                   ."(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/",  // @ modifier
                   $locale, $matches)) {

      if (isset($matches["lang"])) $lang = $matches["lang"];
      if (isset($matches["country"])) $country = $matches["country"];
      if (isset($matches["charset"])) $charset = $matches["charset"];
      if (isset($matches["modifier"])) $modifier = $matches["modifier"];

      if ($modifier) {
        if ($country) {
          if ($charset)
            array_push($locale_names, "${lang}_$country.$charset@$modifier");
          array_push($locale_names, "${lang}_$country@$modifier");
        } elseif ($charset)
            array_push($locale_names, "${lang}.$charset@$modifier");
        array_push($locale_names, "$lang@$modifier");
      }
      if ($country) {
        if ($charset)
          array_push($locale_names, "${lang}_$country.$charset");
        array_push($locale_names, "${lang}_$country");
      } elseif ($charset)
          array_push($locale_names, "${lang}.$charset");
      array_push($locale_names, $lang);
    }

    // If the locale name doesn't match POSIX style, just include it as-is.
    if (!in_array($locale, $locale_names))
      array_push($locale_names, $locale);
  }
  return $locale_names;
}

/**
 * Utility function to get a StreamReader for the given text domain.
 */
function _get_reader($domain=null, $category=5, $enable_cache=true) {
    global $text_domains, $default_domain, $LC_CATEGORIES;
    if (!isset($domain)) $domain = $default_domain;
    if (!isset($text_domains[$domain]->l10n)) {
        // get the current locale
        $locale = _setlocale(LC_MESSAGES, 0);
        $bound_path = isset($text_domains[$domain]->path) ?
          $text_domains[$domain]->path : './';
        $subpath = $LC_CATEGORIES[$category] ."/$domain.mo";

        $locale_names = get_list_of_locales($locale);
        $input = null;
        foreach ($locale_names as $locale) {
          $full_path = $bound_path . $locale . "/" . $subpath;
          if (file_exists($full_path)) {
            $input = new FileReader($full_path);
            break;
          }
        }

        if (!array_key_exists($domain, $text_domains)) {
          // Initialize an empty domain object.
          $text_domains[$domain] = new domain();
        }
        $text_domains[$domain]->l10n = new gettext_reader($input,
                                                          $enable_cache);
    }
    return $text_domains[$domain]->l10n;
}

/**
 * Returns whether we are using our emulated gettext API or PHP built-in one.
 */
function locale_emulation() {
    global $EMULATEGETTEXT;
    return $EMULATEGETTEXT;
}

/**
 * Checks if the current locale is supported on this system.
 */
function _check_locale() {
    global $EMULATEGETTEXT;
    return !$EMULATEGETTEXT;
}

/**
 * Get the codeset for the given domain.
 */
function _get_codeset($domain=null) {
    global $text_domains, $default_domain, $LC_CATEGORIES;
    if (!isset($domain)) $domain = $default_domain;
    return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
}

/**
 * Convert the given string to the encoding set by bind_textdomain_codeset.
 */
function _encode($text) {
    $source_encoding = mb_detect_encoding($text);
    $target_encoding = _get_codeset();
    if ($source_encoding != $target_encoding) {
        return mb_convert_encoding($text, $target_encoding, $source_encoding);
    }
    else {
        return $text;
    }
}




// Custom implementation of the standard gettext related functions

/**
 * Returns passed in $locale, or environment variable $LANG if $locale == ''.
 */
function _get_default_locale($locale) {
  if ($locale == '') // emulate variable support
    return getenv('LANG');
  else
    return $locale;
}

/**
 * Sets a requested locale, if needed emulates it.
 */
function _setlocale($category, $locale) {
    global $CURRENTLOCALE, $EMULATEGETTEXT;
    if ($locale === 0) { // use === to differentiate between string "0"
        if ($CURRENTLOCALE != '')
            return $CURRENTLOCALE;
        else
            // obey LANG variable, maybe extend to support all of LC_* vars
            // even if we tried to read locale without setting it first
            return _setlocale($category, $CURRENTLOCALE);
    } else {
        if (function_exists('setlocale')) {
          $ret = setlocale($category, $locale);
          if (($locale == '' and !$ret) or // failed setting it by env
              ($locale != '' and $ret != $locale)) { // failed setting it
            // Failed setting it according to environment.
            $CURRENTLOCALE = _get_default_locale($locale);
            $EMULATEGETTEXT = 1;
          } else {
            $CURRENTLOCALE = $ret;
            $EMULATEGETTEXT = 0;
          }
        } else {
          // No function setlocale(), emulate it all.
          $CURRENTLOCALE = _get_default_locale($locale);
          $EMULATEGETTEXT = 1;
        }
        // Allow locale to be changed on the go for one translation domain.
        global $text_domains, $default_domain;
        unset($text_domains[$default_domain]->l10n);
        return $CURRENTLOCALE;
    }
}

/**
 * Sets the path for a domain.
 */
function _bindtextdomain($domain, $path) {
    global $text_domains;
    // ensure $path ends with a slash ('/' should work for both, but lets still play nice)
    if (substr(php_uname(), 0, 7) == "Windows") {
      if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/')
        $path .= '\\';
    } else {
      if ($path[strlen($path)-1] != '/')
        $path .= '/';
    }
    if (!array_key_exists($domain, $text_domains)) {
      // Initialize an empty domain object.
      $text_domains[$domain] = new domain();
    }
    $text_domains[$domain]->path = $path;
}

/**
 * Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
 */
function _bind_textdomain_codeset($domain, $codeset) {
    global $text_domains;
    $text_domains[$domain]->codeset = $codeset;
}

/**
 * Sets the default domain.
 */
function _textdomain($domain) {
    global $default_domain;
    $default_domain = $domain;
}

/**
 * Lookup a message in the current domain.
 */
function _gettext($msgid) {
    $l10n = _get_reader();
    //return $l10n->translate($msgid);
    return _encode($l10n->translate($msgid));
}
/**
 * Alias for gettext.
 */
function __($msgid) {
    return _gettext($msgid);
}
/**
 * Plural version of gettext.
 */
function _ngettext($single, $plural, $number) {
    $l10n = _get_reader();
    //return $l10n->ngettext($single, $plural, $number);
    return _encode($l10n->ngettext($single, $plural, $number));
}

/**
 * Override the current domain.
 */
function _dgettext($domain, $msgid) {
    $l10n = _get_reader($domain);
    //return $l10n->translate($msgid);
    return _encode($l10n->translate($msgid));
}
/**
 * Plural version of dgettext.
 */
function _dngettext($domain, $single, $plural, $number) {
    $l10n = _get_reader($domain);
    //return $l10n->ngettext($single, $plural, $number);
    return _encode($l10n->ngettext($single, $plural, $number));
}

/**
 * Overrides the domain and category for a single lookup.
 */
function _dcgettext($domain, $msgid, $category) {
    $l10n = _get_reader($domain, $category);
    //return $l10n->translate($msgid);
    return _encode($l10n->translate($msgid));
}
/**
 * Plural version of dcgettext.
 */
function _dcngettext($domain, $single, $plural, $number, $category) {
    $l10n = _get_reader($domain, $category);
    //return $l10n->ngettext($single, $plural, $number);
    return _encode($l10n->ngettext($single, $plural, $number));
}



// Wrappers to use if the standard gettext functions are available, but the current locale is not supported by the system.
// Use the standard impl if the current locale is supported, use the custom impl otherwise.

function T_setlocale($category, $locale) {
    return _setlocale($category, $locale);
}

function T_bindtextdomain($domain, $path) {
    if (_check_locale()) return bindtextdomain($domain, $path);
    else return _bindtextdomain($domain, $path);
}
function T_bind_textdomain_codeset($domain, $codeset) {
    // bind_textdomain_codeset is available only in PHP 4.2.0+
    if (_check_locale() and function_exists('bind_textdomain_codeset')) return bind_textdomain_codeset($domain, $codeset);
    else return _bind_textdomain_codeset($domain, $codeset);
}
function T_textdomain($domain) {
    if (_check_locale()) return textdomain($domain);
    else return _textdomain($domain);
}
function T_gettext($msgid) {
    if (_check_locale()) return gettext($msgid);
    else return _gettext($msgid);
}
function T_($msgid) {
    if (_check_locale()) return _($msgid);
    return __($msgid);
}
function T_ngettext($single, $plural, $number) {
    if (_check_locale()) return ngettext($single, $plural, $number);
    else return _ngettext($single, $plural, $number);
}
function T_dgettext($domain, $msgid) {
    if (_check_locale()) return dgettext($domain, $msgid);
    else return _dgettext($domain, $msgid);
}
function T_dngettext($domain, $single, $plural, $number) {
    if (_check_locale()) return dngettext($domain, $single, $plural, $number);
    else return _dngettext($domain, $single, $plural, $number);
}
function T_dcgettext($domain, $msgid, $category) {
    if (_check_locale()) return dcgettext($domain, $msgid, $category);
    else return _dcgettext($domain, $msgid, $category);
}
function T_dcngettext($domain, $single, $plural, $number, $category) {
    if (_check_locale()) return dcngettext($domain, $single, $plural, $number, $category);
    else return _dcngettext($domain, $single, $plural, $number, $category);
}



// Wrappers used as a drop in replacement for the standard gettext functions

if (!function_exists('gettext')) {
    function bindtextdomain($domain, $path) {
        return _bindtextdomain($domain, $path);
    }
    function bind_textdomain_codeset($domain, $codeset) {
        return _bind_textdomain_codeset($domain, $codeset);
    }
    function textdomain($domain) {
        return _textdomain($domain);
    }
    function gettext($msgid) {
        return _gettext($msgid);
    }
    function _($msgid) {
        return __($msgid);
    }
    function ngettext($single, $plural, $number) {
        return _ngettext($single, $plural, $number);
    }
    function dgettext($domain, $msgid) {
        return _dgettext($domain, $msgid);
    }
    function dngettext($domain, $single, $plural, $number) {
        return _dngettext($domain, $single, $plural, $number);
    }
    function dcgettext($domain, $msgid, $category) {
        return _dcgettext($domain, $msgid, $category);
    }
    function dcngettext($domain, $single, $plural, $number, $category) {
        return _dcngettext($domain, $single, $plural, $number, $category);
    }
}

?>