summaryrefslogtreecommitdiffstats
path: root/includes/locale.inc
blob: 2e90f817e4c8ea6a80262f41a5d9866d742014b2 (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
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
<?php

/**
 * @file
 * Admin-related functions for locale.module.
 */

// ---------------------------------------------------------------------------------
// Language addition functionality (administration only)

/**
 * Helper function to add a language
 */
function _locale_add_language($code, $name, $onlylanguage = TRUE) {
  db_query("INSERT INTO {locales_meta} (locale, name) VALUES ('%s','%s')", $code, $name);
  $result = db_query("SELECT lid FROM {locales_source}");
  while ($string = db_fetch_object($result)) {
    db_query("INSERT INTO {locales_target} (lid, locale, translation) VALUES (%d,'%s', '')", $string->lid, $code);
  }

  // If only the language was added, and not a PO file import triggered
  // the language addition, we need to inform the user on how to start
  // a translation
  if ($onlylanguage) {
    drupal_set_message(t('The language %locale has been created, and can now be used to import a translation. More information is available in the <a href="%locale-help">help screen</a>.', array('%locale' => theme('placeholder', t($name)), '%locale-help' => url('admin/help/locale'))));
  }
  else {
    drupal_set_message(t('The language %locale has been created.', array('%locale' => theme('placeholder', t($name)))));
  }

  watchdog('locale', t('The %language language (%locale) has been created.', array('%language' => theme('placeholder', $name), '%locale' => theme('placeholder', $code))));
}

/**
 * User interface for the language management screen.
 */
function _locale_admin_manage_screen() {
  $languages = locale_supported_languages(TRUE, TRUE);

  $options = array();
  $form['name'] = array('#tree' => TRUE);
  foreach ($languages['name'] as $key => $lang) {
    $options[$key] = '';
    $status = db_fetch_object(db_query("SELECT isdefault, enabled FROM {locales_meta} WHERE locale = '%s'", $key));
    if ($status->enabled) {
      $enabled[] = $key;
    }
    if ($status->isdefault) {
      $isdefault = $key;
    }
    if ($key == 'en') {
      $form['name']['en'] = array('#value' => check_plain($lang));
    }
    else {
      $original = db_fetch_object(db_query("SELECT COUNT(*) AS strings FROM {locales_source}"));
      $translation = db_fetch_object(db_query("SELECT COUNT(*) AS translation FROM {locales_target} WHERE locale = '%s' AND translation != ''", $key));

      $ratio = ($original->strings > 0 && $translation->translation > 0) ? round(($translation->translation/$original->strings)*100., 2) : 0;

      $form['name'][$key] = array('#type' => 'textfield',
        '#default_value' => $lang,
        '#size' => 15,
        '#maxlength' => 64,
      );
      $form['translation'][$key] = array('#value' => "$translation->translation/$original->strings ($ratio%)");
    }
  }
  $form['enabled'] = array('#type' => 'checkboxes',
    '#options' => $options,
    '#default_value' => $enabled,
  );
  $form['site_default'] = array('#type' => 'radios',
    '#options' => $options,
    '#default_value' => $isdefault,
  );
  $form['submit'] = array('#type' => 'submit', '#value' => t('Save configuration'));

  return drupal_get_form('_locale_admin_manage_screen', $form, 'locale_admin_manage_screen');
}

/**
 * Theme the locale admin manager form.
 */
function theme_locale_admin_manage_screen($form) {
  foreach ($form['name'] as $key => $element) {
    // Do not take form control structures.
    if (is_array($element) && element_child($key)) {
      $rows[] = array(check_plain($key), form_render($form['name'][$key]), form_render($form['enabled'][$key]), form_render($form['site_default'][$key]), ($key != 'en' ? form_render($form['translation'][$key]) : message_na()), ($key != 'en' ? l(t('delete'), 'admin/locale/language/delete/'. $key) : ''));
    }
  }
  $header = array(array('data' => t('Code')), array('data' => t('English name')), array('data' => t('Enabled')), array('data' => t('Default')), array('data' => t('Translated')), array('data' => t('Operations')));
  $output = theme('table', $header, $rows);
  $output .= form_render($form);

  return $output;
}

/**
 * Process locale admin manager form submissions.
 */
function _locale_admin_manage_screen_submit($form_id, $form_values) {
  // Save changes to existing languages.
  $languages = locale_supported_languages(FALSE, TRUE);
  foreach($languages['name'] as $key => $value) {
    if ($form_values['site_default'] == $key) {
      $form_values['enabled'][$key] = 1; // autoenable the default language
    }
    $enabled = $form_values['enabled'][$key] ? 1 : 0;
    if ($key == 'en') {
      // Disallow name change for English locale.
      db_query("UPDATE {locales_meta} SET isdefault = %d, enabled = %d WHERE locale = 'en'", ($form_values['site_default'] == $key), $enabled);
    }
    else {
      db_query("UPDATE {locales_meta} SET name = '%s', isdefault = %d, enabled = %d WHERE locale = '%s'", $form_values['name'][$key], ($form_values['site_default'] == $key), $enabled, $key);
    }
  }
  drupal_set_message(t('Configuration saved.'));

  // Changing the locale settings impacts the interface:
  cache_clear_all();

  return 'admin/locale/language/overview';
}

/**
 * User interface for the language addition screen.
 */
function _locale_admin_manage_add_screen() {
  $isocodes = _locale_prepare_iso_list();

  $form = array();
  $form['language list'] = array('#type' => 'fieldset',
    '#title' => t('Language list'),
    '#collapsible' => TRUE,
  );
  $form['language list']['langcode'] = array('#type' => 'select',
    '#title' => t('Language name'),
    '#default_value' => key($isocodes),
    '#options' => $isocodes,
    '#description' => t('Select your language here, or add it below, if you are unable to find it.'),
  );
  $form['language list']['submit'] = array('#type' => 'submit', '#value' => t('Add language'));

  $output = drupal_get_form('locale_add_language_form', $form);

  $form = array();
  $form['custom language'] = array('#type' => 'fieldset',
    '#title' => t('Custom language'),
    '#collapsible' => TRUE,
  );
  $form['custom language']['langcode'] = array('#type' => 'textfield',
    '#title' => t('Language code'),
    '#size' => 12,
    '#maxlength' => 60,
    '#required' => TRUE,
    '#description' => t("Commonly this is an <a href=\"%iso-codes\">ISO 639 language code</a> with an optional country code for regional variants. Examples include 'en', 'en-US' and 'zh-cn'.", array('%iso-codes' => 'http://www.w3.org/WAI/ER/IG/ert/iso639.htm')),
  );
  $form['custom language']['langname'] = array('#type' => 'textfield',
    '#title' => t('Language name in English'),
    '#maxlength' => 64,
    '#required' => TRUE,
    '#description' => t('Name of the language. Will be available for translation in all languages.'),
  );
  $form['custom language']['submit'] = array('#type' => 'submit', '#value' => t('Add custom language'));

  // Use the validation and submit functions of the add language form.
  $output .= drupal_get_form('locale_custom_language_form', $form, 'locale_add_language_form');

  return $output;
}

/**
 * Validate the language addition form.
 */
function locale_add_language_form_validate($form_id, $form_values) {
  if ($duplicate = db_num_rows(db_query("SELECT locale FROM {locales_meta} WHERE locale = '%s'", $form_values['langcode'])) != 0) {
    form_set_error(t('The language %language (%code) already exists.', array('%language' => theme('placeholder', check_plain($form_values['langname'])), '%code' => theme('placeholder', $form_values['langcode']))));
  }

  if (!isset($form_values['langname'])) {
    $isocodes = _locale_get_iso639_list();
    if (!isset($isocodes[$form_values['langcode']])) {
      form_set_error('langcode', t('Invalid language code.'));
    }
  }
}

/**
 * Process the language addition form submission.
 */
function locale_add_language_form_submit($form_id, $form_values) {
  if (isset($form_values['langname'])) {
    // Custom language form.
    _locale_add_language($form_values['langcode'], $form_values['langname']);
  }
  else {
    $isocodes = _locale_get_iso639_list();
    _locale_add_language($form_values['langcode'], $isocodes[$form_values['langcode']][0]);
  }

  return 'admin/locale';
}

/**
 * User interface for the translation import screen.
 */
function _locale_admin_import_screen() {
  $languages = locale_supported_languages(FALSE, TRUE);
  $languages = array_map('t', $languages['name']);
  unset($languages['en']);

  if (!count($languages)) {
    $languages = _locale_prepare_iso_list();
  }
  else {
    $languages = array(
      t('Already added languages') => $languages,
      t('Languages not yet added') => _locale_prepare_iso_list()
    );
  }

  $form = array();
  $form['import'] = array('#type' => 'fieldset',
    '#title' => t('Import translation'),
  );
  $form['import']['file'] = array('#type' => 'file',
    '#title' => t('Language file'),
    '#size' => 50,
    '#description' => t('A gettext Portable Object (.po) file.'),
  );
  $form['import']['langcode'] = array('#type' => 'select',
    '#title' => t('Import into'),
    '#options' => $languages,
    '#description' => t('Choose the language you want to add strings into. If you choose a language which is not yet set up, then it will be added.'),
  );
  $form['import']['mode'] = array('#type' => 'radios',
    '#title' => t('Mode'),
    '#default_value' => 'overwrite',
    '#options' => array('overwrite' => t('Strings in the uploaded file replace existing ones, new ones are added'), 'keep' => t('Existing strings are kept, only new strings are added')),
  );
  $form['import']['submit'] = array('#type' => 'submit', '#value' => t('Import'));
  $form['#attributes']['enctype'] = 'multipart/form-data';

  return drupal_get_form('_locale_admin_import', $form);
}

/**
 * Process the locale import form submission.
 */
function _locale_admin_import_submit($form_id, $form_values) {
  // Add language, if not yet supported
  $languages = locale_supported_languages(TRUE, TRUE);
  if (!isset($languages['name'][$form_values['langcode']])) {
    $isocodes = _locale_get_iso639_list();
    _locale_add_language($form_values['langcode'], $isocodes[$form_values['langcode']][0], FALSE);
  }

  // Now import strings into the language
  $file = file_check_upload('file');
  if ($ret = _locale_import_po($file, $form_values['langcode'], $form_values['mode']) == FALSE) {
    $message = t('The translation import of %filename failed.', array('%filename' => theme('placeholder', $file->filename)));
    drupal_set_message($message, 'error');
    watchdog('locale', $message, WATCHDOG_ERROR);
  }

  return 'admin/locale';
}

/**
 * User interface for the translation export screen
 */
function _locale_admin_export_screen() {
  $languages = locale_supported_languages(FALSE, TRUE);
  $languages = array_map('t', $languages['name']);
  unset($languages['en']);

  // Offer language specific export if any language is set up
  if (count($languages)) {
    $form = array();
    $form['export'] = array('#type' => 'fieldset',
      '#title' => t('Export translation'),
      '#collapsible' => TRUE,
    );
    $form['export']['langcode'] = array('#type' => 'select',
      '#title' => t('Language name'),
      '#options' => $languages,
      '#description' => t('Select the language you would like to export in gettext Portable Object (.po) format.'),
    );
    $form['export']['submit'] = array('#type' => 'submit', '#value' => t('Export'));
    $output = drupal_get_form('_locale_export_po', $form);
  }

  // Complete template export of the strings
  $form = array();
  $form['export'] = array('#type' => 'fieldset',
    '#title' => t('Export template'),
    '#collapsible' => TRUE,
    '#description' => t('Generate a gettext Portable Object Template (.pot) file with all the interface strings from the Drupal locale database.'),
  );
  $form['export']['submit'] = array('#type' => 'submit', '#value' => t('Export'));
  $output .= drupal_get_form('_locale_export_pot', $form, '_locale_export_po');

  return $output;
}

/**
 * Process a locale export form submissions.
 */
function _locale_export_po_submit($form_id, $form_values) {
  _locale_export_po($form_values['langcode']);
}

/**
 * User interface for the string search screen
 */
function _locale_string_seek_form() {
  // Get *all* languages set up
  $languages = locale_supported_languages(FALSE, TRUE);
  asort($languages['name']); unset($languages['name']['en']);
  $languages['name'] = array_map('check_plain', $languages['name']);

  // Present edit form preserving previous user settings
  $query = _locale_string_seek_query();
  $form = array();
  $form['search'] = array('#type' => 'fieldset',
    '#title' => t('Search'),
  );
  $form['search']['string'] = array('#type' => 'textfield',
    '#title' => t('Strings to search for'),
    '#default_value' => $query->string,
    '#size' => 30,
    '#maxlength' => 30,
    '#description' => t('Leave blank to show all strings. The search is case sensitive.'),
  );
  $form['search']['language'] = array('#type' => 'radios',
    '#title' => t('Language'),
    '#default_value' => ($query->language ? $query->language : 'all'),
    '#options' => array_merge(array('all' => t('All languages'), 'en' => t('English (provided by Drupal)')), $languages['name']),
  );
  $form['search']['searchin'] = array('#type' => 'radios',
    '#title' => t('Search in'),
    '#default_value' => ($query->searchin ? $query->searchin : 'all'),
    '#options' => array('all' => t('All strings in that language'), 'translated' => t('Only translated strings'), 'untranslated' => t('Only untranslated strings')),
  );
  $form['search']['submit'] = array('#type' => 'submit', '#value' => t('Search'));
  $form['#redirect'] = FALSE;

  return drupal_get_form('_locale_string_seek', $form);
}

/**
 * User interface for string editing.
 */
function _locale_string_edit($lid) {
  $languages = locale_supported_languages(FALSE, TRUE);
  unset($languages['name']['en']);

  $result = db_query('SELECT DISTINCT s.source, t.translation, t.locale FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid WHERE s.lid = %d', $lid);
  $form = array();
  $form['translations'] = array('#tree' => TRUE);
  while ($translation = db_fetch_object($result)) {
    $orig = $translation->source;

    // Approximate the number of rows in a textfield with a maximum of 10.
    $rows = min(ceil(str_word_count($orig) / 12), 10);

    $form['translations'][$translation->locale] = array(
      '#type' => 'textarea',
      '#title' => $languages['name'][$translation->locale],
      '#default_value' => $translation->translation,
      '#rows' => $rows,
    );
    unset($languages['name'][$translation->locale]);
  }

  // Handle erroneous lid.
  if (!isset($orig)){
    drupal_set_message(t('String not found.'));
    drupal_goto('admin/locale/string/search');
  }

  // Add original text. Assign negative weight so that it floats to the top.
  $form['item'] = array('#type' => 'item',
    '#title' => t('Original text'),
    '#value' => check_plain(wordwrap($orig, 0)),
    '#weight' => -1,
  );

  foreach ($languages['name'] as $key => $lang) {
    $form['translations'][$key] = array(
      '#type' => 'textarea',
      '#title' => $lang,
      '#rows' => $rows,
    );
  }

  $form['lid'] = array('#type' => 'value', '#value' => $lid);
  $form['submit'] = array('#type' => 'submit', '#value' => t('Save translations'));

  return drupal_get_form('_locale_string_edit', $form);
}

/**
 * Process string editing form submissions.
 * Saves all translations of one string submitted from a form.
 */
function _locale_string_edit_submit($form_id, $form_values) {
  $lid = $form_values['lid'];
  foreach ($form_values['translations'] as $key => $value) {
    $value = str_replace('&amp;', '&', filter_xss_admin($value));
    $trans = db_fetch_object(db_query("SELECT translation FROM {locales_target} WHERE lid = %d AND locale = '%s'", $lid, $key));
    if (isset($trans->translation)) {
      db_query("UPDATE {locales_target} SET translation = '%s' WHERE lid = %d AND locale = '%s'", $value, $lid, $key);
    }
    else {
      db_query("INSERT INTO {locales_target} (lid, translation, locale) VALUES (%d, '%s', '%s')", $lid, $value, $key);
    }
  }
  drupal_set_message(t('The string has been saved.'));

  // Refresh the locale cache.
  locale_refresh_cache();
  // Rebuild the menu, strings may have changed.
  menu_rebuild();

  return 'admin/locale/string/search';
}

/**
 * Delete a language string.
 */
function _locale_string_delete($lid) {
  db_query('DELETE FROM {locales_source} WHERE lid = %d', $lid);
  db_query('DELETE FROM {locales_target} WHERE lid = %d', $lid);
  locale_refresh_cache();
  drupal_set_message(t('The string has been removed.'));

  drupal_goto('admin/locale/string/search');
}

/**
 * Parses Gettext Portable Object file information and inserts into database
 *
 * @param $file Object contains properties of local file to be imported
 * @param $lang Language code
 * @param $mode should existing translations be replaced?
 */
function _locale_import_po($file, $lang, $mode) {
  // If not in 'safe mode', increase the maximum execution time:
  if (!ini_get('safe_mode')) {
    set_time_limit(240);
  }

  // Check if we have the language already in the database
  if (!db_fetch_object(db_query("SELECT locale FROM {locales_meta} WHERE locale = '%s'", $lang))) {
    drupal_set_message(t('The language selected for import is not supported.'), 'error');
    return FALSE;
  }

  // Get strings from file (returns on failure after a partial import, or on success)
  $status = _locale_import_read_po($file, $mode, $lang);
  if ($status === FALSE) {
    // error messages are set in _locale_import_read_po
    return FALSE;
  }

  // Get status information on import process
  list($headerdone, $additions, $updates) = _locale_import_one_string('report', $mode);

  if (!$headerdone) {
    drupal_set_message(t('The translation file %filename appears to have a missing or malformed header.', array('%filename' => theme('placeholder', $file->filename))), 'error');
  }

  // rebuild locale cache
  cache_clear_all("locale:$lang");

  // rebuild the menu, strings may have changed
  menu_rebuild();

  drupal_set_message(t('The translation was successfully imported. There are %number newly created translated strings and %update strings were updated.', array('%number' => $additions, '%update' => $updates)));
  watchdog('locale', t('Imported %file into %locale: %number new strings added and %update updated.', array('%file' => theme('placeholder', $file->filename), '%locale' => theme('placeholder', $lang), '%number' => $additions, '%update' => $updates)));
  return TRUE;
}

/**
 * Parses Gettext Portable Object file into an array
 *
 * @param $file Object with properties of local file to parse
 * @author Jacobo Tarrio
 */
function _locale_import_read_po($file, $mode, $lang) {

  $message = theme('placeholder', $file->filename);
  $fd = fopen($file->filepath, "rb"); // File will get closed by PHP on return
  if (!$fd) {
    drupal_set_message(t('The translation import failed, because the file %filename could not be read.', array('%filename' => $message)), 'error');
    return FALSE;
  }

  $context = "COMMENT"; // Parser context: COMMENT, MSGID, MSGID_PLURAL, MSGSTR and MSGSTR_ARR
  $current = array();   // Current entry being read
  $plural = 0;          // Current plural form
  $lineno = 0;          // Current line

  while (!feof($fd)) {
    $line = fgets($fd, 10*1024); // A line should not be this long
    $lineno++;
    $line = trim(strtr($line, array("\\\n" => "")));

    if (!strncmp("#", $line, 1)) { // A comment
      if ($context == "COMMENT") { // Already in comment context: add
        $current["#"][] = substr($line, 1);
      }
      elseif (($context == "MSGSTR") || ($context == "MSGSTR_ARR")) { // End current entry, start a new one
        _locale_import_one_string($current, $mode, $lang);
        $current = array();
        $current["#"][] = substr($line, 1);
        $context = "COMMENT";
      }
      else { // Parse error
        drupal_set_message(t('The translation file %filename contains an error: "msgstr" was expected but not found on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
    }
    elseif (!strncmp("msgid_plural", $line, 12)) {
      if ($context != "MSGID") { // Must be plural form for current entry
        drupal_set_message(t('The translation file %filename contains an error: "msgid_plural" was expected but not found on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $line = trim(substr($line, 12));
      $quoted = _locale_import_parse_quoted($line);
      if ($quoted === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $current["msgid"] = $current["msgid"] ."\0". $quoted;
      $context = "MSGID_PLURAL";
    }
    elseif (!strncmp("msgid", $line, 5)) {
      if ($context == "MSGSTR") {   // End current entry, start a new one
        _locale_import_one_string($current, $mode, $lang);
        $current = array();
      }
      elseif ($context == "MSGID") { // Already in this context? Parse error
        drupal_set_message(t('The translation file %filename contains an error: "msgid" is unexpected on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $line = trim(substr($line, 5));
      $quoted = _locale_import_parse_quoted($line);
      if ($quoted === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $current["msgid"] = $quoted;
      $context = "MSGID";
    }
    elseif (!strncmp("msgstr[", $line, 7)) {
      if (($context != "MSGID") && ($context != "MSGID_PLURAL") && ($context != "MSGSTR_ARR")) { // Must come after msgid, msgid_plural, or msgstr[]
        drupal_set_message(t('The translation file %filename contains an error: "msgstr[]" is unexpected on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      if (strpos($line, "]") === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $frombracket = strstr($line, "[");
      $plural = substr($frombracket, 1, strpos($frombracket, "]") - 1);
      $line = trim(strstr($line, " "));
      $quoted = _locale_import_parse_quoted($line);
      if ($quoted === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $current["msgstr"][$plural] = $quoted;
      $context = "MSGSTR_ARR";
    }
    elseif (!strncmp("msgstr", $line, 6)) {
      if ($context != "MSGID") {   // Should come just after a msgid block
        drupal_set_message(t('The translation file %filename contains an error: "msgstr" is unexpected on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $line = trim(substr($line, 6));
      $quoted = _locale_import_parse_quoted($line);
      if ($quoted === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      $current["msgstr"] = $quoted;
      $context = "MSGSTR";
    }
    elseif ($line != "") {
      $quoted = _locale_import_parse_quoted($line);
      if ($quoted === false) {
        drupal_set_message(t('The translation file %filename contains a syntax error on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
      if (($context == "MSGID") || ($context == "MSGID_PLURAL")) {
        $current["msgid"] .= $quoted;
      }
      elseif ($context == "MSGSTR") {
        $current["msgstr"] .= $quoted;
      }
      elseif ($context == "MSGSTR_ARR") {
        $current["msgstr"][$plural] .= $quoted;
      }
      else {
        drupal_set_message(t('The translation file %filename contains an error: there is an unexpected string on line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
        return FALSE;
      }
    }
  }

  // End of PO file, flush last entry
  if (($context == "MSGSTR") || ($context == "MSGSTR_ARR")) {
    _locale_import_one_string($current, $mode, $lang);
  }
  elseif ($context != "COMMENT") {
    drupal_set_message(t('The translation file %filename ended unexpectedly at line %line.', array('%filename' => $message, '%line' => $lineno)), 'error');
    return FALSE;
  }

}

/**
 * Imports a string into the database
 *
 * @param $value Information about the string
 * @author Jacobo Tarrio
 */
function _locale_import_one_string($value, $mode, $lang = NULL) {
  static $additions = 0;
  static $updates = 0;
  static $headerdone = FALSE;

  // Report the changes made (called at end of import)
  if ($value == 'report') {
    return array($headerdone, $additions, $updates);
  }
  // Current string is the header information
  elseif ($value['msgid'] == '') {
    $hdr = _locale_import_parse_header($value['msgstr']);

    // Get the plural formula
    if ($hdr["Plural-Forms"] && $p = _locale_import_parse_plural_forms($hdr["Plural-Forms"], $file->filename)) {
      list($nplurals, $plural) = $p;
      db_query("UPDATE {locales_meta} SET plurals = %d, formula = '%s' WHERE locale = '%s'", $nplurals, $plural, $lang);
    }
    else {
      db_query("UPDATE {locales_meta} SET plurals = %d, formula = '%s' WHERE locale = '%s'", 0, '', $lang);
    }
    $headerdone = TRUE;
  }
  // Some real string to import
  else {
    $comments = filter_xss_admin(_locale_import_shorten_comments($value['#']));

    // Handle a translation for some plural string
    if (strpos($value['msgid'], "\0")) {
      $english = explode("\0", $value['msgid'], 2);
      $entries = array_keys($value['msgstr']);
      for ($i = 3; $i <= count($entries); $i++) {
        $english[] = $english[1];
      }
      $translation = array_map('_locale_import_append_plural', $value['msgstr'], $entries);
      $english = array_map('_locale_import_append_plural', $english, $entries);
      foreach ($translation as $key => $trans) {
        if ($key == 0) {
          $plid = 0;
        }
        $loc = db_fetch_object(db_query("SELECT lid FROM {locales_source} WHERE source = '%s'", $english[$key]));
        if ($loc->lid) { // a string exists
          $lid = $loc->lid;
          // update location field
          db_query("UPDATE {locales_source} SET location = '%s' WHERE lid = %d", $comments, $lid);
          $trans2 = db_fetch_object(db_query("SELECT lid, translation, plid, plural FROM {locales_target} WHERE lid = %d AND locale = '%s'", $lid, $lang));
          if (!$trans2->lid) { // no translation in current language
            db_query("INSERT INTO {locales_target} (lid, locale, translation, plid, plural) VALUES (%d, '%s', '%s', %d, %d)", $lid, $lang, filter_xss_admin($trans), $plid, $key);
            $additions++;
          } // translation exists
          else if ($mode == 'overwrite' || $trans2->translation == '') {
            db_query("UPDATE {locales_target} SET translation = '%s', plid = %d, plural = %d WHERE locale = '%s' AND lid = %d", filter_xss_admin($trans), $plid, $key, $lang, $lid);
            if ($trans2->translation == '') {
              $additions++;
            }
            else {
              $updates++;
            }
          }
        }
        else { // no string
          db_query("INSERT INTO {locales_source} (location, source) VALUES ('%s', '%s')", $comments, filter_xss_admin($english[$key]));
          $loc = db_fetch_object(db_query("SELECT lid FROM {locales_source} WHERE source = '%s'", $english[$key]));
          $lid = $loc->lid;
          db_query("INSERT INTO {locales_target} (lid, locale, translation, plid, plural) VALUES (%d, '%s', '%s', %d, %d)", $lid, $lang, filter_xss_admin($trans), $plid, $key);
          if ($trans != '') {
            $additions++;
          }
        }
        $plid = $lid;
      }
    }

    // A simple translation
    else {
      $english = $value['msgid'];
      $translation = $value['msgstr'];
      $loc = db_fetch_object(db_query("SELECT lid FROM {locales_source} WHERE source = '%s'", $english));
      if ($loc->lid) { // a string exists
        $lid = $loc->lid;
        // update location field
        db_query("UPDATE {locales_source} SET location = '%s' WHERE source = '%s'", $comments, $english);
        $trans = db_fetch_object(db_query("SELECT lid, translation FROM {locales_target} WHERE lid = %d AND locale = '%s'", $lid, $lang));
        if (!$trans->lid) { // no translation in current language
          db_query("INSERT INTO {locales_target} (lid, locale, translation) VALUES (%d, '%s', '%s')", $lid, $lang, filter_xss_admin($translation));
          $additions++;
        } // translation exists
        else if ($mode == 'overwrite') { //overwrite in any case
          db_query("UPDATE {locales_target} SET translation = '%s' WHERE locale = '%s' AND lid = %d", filter_xss_admin($translation), $lang, $lid);
          if ($trans->translation == '') {
            $additions++;
          }
          else {
            $updates++;
          }
        } // overwrite if empty string
        else if ($trans->translation == '') {
          db_query("UPDATE {locales_target} SET translation = '%s' WHERE locale = '%s' AND lid = %d", $translation, $lang, $lid);
          $additions++;
        }
      }
      else { // no string
        db_query("INSERT INTO {locales_source} (location, source) VALUES ('%s', '%s')", $comments, $english);
        $loc = db_fetch_object(db_query("SELECT lid FROM {locales_source} WHERE source = '%s'", $english));
        $lid = $loc->lid;
        db_query("INSERT INTO {locales_target} (lid, locale, translation) VALUES (%d, '%s', '%s')", $lid, $lang, filter_xss_admin($translation));
        if ($translation != '') {
          $additions++;
        }
      }
    }
  }
}

/**
 * Parses a Gettext Portable Object file header
 *
 * @param $header A string containing the complete header
 * @return An associative array of key-value pairs
 * @author Jacobo Tarrio
 */
function _locale_import_parse_header($header) {
  $hdr = array();

  $lines = explode("\n", $header);
  foreach ($lines as $line) {
    $line = trim($line);
    if ($line) {
      list($tag, $contents) = explode(":", $line, 2);
      $hdr[trim($tag)] = trim($contents);
    }
  }

  return $hdr;
}

/**
 * Parses a Plural-Forms entry from a Gettext Portable Object file header
 *
 * @param $pluralforms A string containing the Plural-Forms entry
 * @param $filename A string containing the filename
 * @return An array containing the number of plurals and a
 *         formula in PHP for computing the plural form
 * @author Jacobo Tarrio
 */
function _locale_import_parse_plural_forms($pluralforms, $filename) {
  // First, delete all whitespace
  $pluralforms = strtr($pluralforms, array(" " => "", "\t" => ""));

  // Select the parts that define nplurals and plural
  $nplurals = strstr($pluralforms, "nplurals=");
  if (strpos($nplurals, ";")) {
    $nplurals = substr($nplurals, 9, strpos($nplurals, ";") - 9);
  }
  else {
    return FALSE;
  }
  $plural = strstr($pluralforms, "plural=");
  if (strpos($plural, ";")) {
    $plural = substr($plural, 7, strpos($plural, ";") - 7);
  }
  else {
    return FALSE;
  }

  // Get PHP version of the plural formula
  $plural = _locale_import_parse_arithmetic($plural);

  if ($plural !== FALSE) {
    return array($nplurals, $plural);
  }
  else {
    drupal_set_message(t('The translation file %filename contains an error: the plural formula could not be parsed.', array('%filename' => theme('placeholder', $filename))), 'error');
    return FALSE;
  }
}

/**
 * Parses and sanitizes an arithmetic formula into a PHP expression
 *
 * While parsing, we ensure, that the operators have the right
 * precedence and associativity.
 *
 * @param $string A string containing the arithmetic formula
 * @return The PHP version of the formula
 * @author Jacobo Tarrio
 */
function _locale_import_parse_arithmetic($string) {
  // Operator precedence table
  $prec = array("(" => -1, ")" => -1, "?" => 1, ":" => 1, "||" => 3, "&&" => 4, "==" => 5, "!=" => 5, "<" => 6, ">" => 6, "<=" => 6, ">=" => 6, "+" => 7, "-" => 7, "*" => 8, "/" => 8, "%" => 8);
  // Right associativity
  $rasc = array("?" => 1, ":" => 1);

  $tokens = _locale_import_tokenize_formula($string);

  // Parse by converting into infix notation then back into postfix
  $opstk = array();
  $elstk = array();

  foreach ($tokens as $token) {
    $ctok = $token;

    // Numbers and the $n variable are simply pushed into $elarr
    if (is_numeric($token)) {
      $elstk[] = $ctok;
    }
    elseif ($ctok == "n") {
      $elstk[] = '$n';
    }
    elseif ($ctok == "(") {
      $opstk[] = $ctok;
    }
    elseif ($ctok == ")") {
      $topop = array_pop($opstk);
      while (($topop != NULL) && ($topop != "(")) {
        $elstk[] = $topop;
        $topop = array_pop($opstk);
      }
    }
    elseif ($prec[$ctok]) {
      // If it's an operator, then pop from $oparr into $elarr until the
      // precedence in $oparr is less than current, then push into $oparr
      $topop = array_pop($opstk);
      while (($topop != NULL) && ($prec[$topop] >= $prec[$ctok]) && !(($prec[$topop] == $prec[$ctok]) && $rasc[$topop] && $rasc[$ctok])) {
        $elstk[] = $topop;
        $topop = array_pop($opstk);
      }
      if ($topop) {
        $opstk[] = $topop;   // Return element to top
      }
      $opstk[] = $ctok;      // Parentheses are not needed
    }
    else {
      return false;
    }
  }

  // Flush operator stack
  $topop = array_pop($opstk);
  while ($topop != NULL) {
    $elstk[] = $topop;
    $topop = array_pop($opstk);
  }

  // Now extract formula from stack
  $prevsize = count($elstk) + 1;
  while (count($elstk) < $prevsize) {
    $prevsize = count($elstk);
    for ($i = 2; $i < count($elstk); $i++) {
      $op = $elstk[$i];
      if ($prec[$op]) {
        $f = "";
        if ($op == ":") {
          $f = $elstk[$i - 2] ."):". $elstk[$i - 1] .")";
        }
        elseif ($op == "?") {
          $f = "(". $elstk[$i - 2] ."?(". $elstk[$i - 1];
        }
        else {
          $f = "(". $elstk[$i - 2] . $op . $elstk[$i - 1] .")";
        }
        array_splice($elstk, $i - 2, 3, $f);
        break;
      }
    }
  }

  // If only one element is left, the number of operators is appropriate
  if (count($elstk) == 1) {
    return $elstk[0];
  }
  else {
    return FALSE;
  }
}

/**
 * Backward compatible implementation of token_get_all() for formula parsing
 *
 * @param $string A string containing the arithmetic formula
 * @return The PHP version of the formula
 * @author Gerhard Killesreiter
 */
function _locale_import_tokenize_formula($formula) {
  $formula = str_replace(" ", "", $formula);
  $tokens = array();
  for ($i = 0; $i < strlen($formula); $i++) {
    if (is_numeric($formula[$i])) {
      $num = $formula[$i];
      $j = $i + 1;
      while($j < strlen($formula) && is_numeric($formula[$j])) {
        $num .= $formula[$j];
        $j++;
      }
      $i = $j - 1;
      $tokens[] = $num;
    }
    elseif ($pos = strpos(" =<>!&|", $formula[$i])) { // We won't have a space
      $next = $formula[$i + 1];
      switch ($pos) {
        case 1:
        case 2:
        case 3:
        case 4:
          if ($next == '=') {
            $tokens[] = $formula[$i] .'=';
            $i++;
          }
          else {
            $tokens[] = $formula[$i];
          }
          break;
        case 5:
          if ($next == '&') {
            $tokens[] = '&&';
            $i++;
          }
          else {
            $tokens[] = $formula[$i];
          }
          break;
        case 6:
          if ($next == '|') {
            $tokens[] = '||';
            $i++;
          }
          else {
            $tokens[] = $formula[$i];
          }
          break;
      }
    }
    else {
      $tokens[] = $formula[$i];
    }
  }
  return $tokens;
}

/**
 * Modify a string to contain proper count indices
 *
 * This is a callback function used via array_map()
 *
 * @param $entry An array element
 * @param $key Index of the array element
 */
function _locale_import_append_plural($entry, $key) {
  // No modifications for 0, 1
  if ($key == 0 || $key == 1) {
    return $entry;
  }

  // First remove any possibly false indices, then add new ones
  $entry = preg_replace('/(%count)\[[0-9]\]/', '\\1', $entry);
  return preg_replace('/(%count)/', "\\1[$key]", $entry);
}

/**
 * Generate a short, one string version of the passed comment array
 *
 * @param $comment An array of strings containing a comment
 * @return Short one string version of the comment
 */
function _locale_import_shorten_comments($comment) {
  $comm = '';
  while (count($comment)) {
    $test = $comm . substr(array_shift($comment), 1) .', ';
    if (strlen($comm) < 130) {
      $comm = $test;
    }
    else {
      break;
    }
  }
  return substr($comm, 0, -2);
}

/**
 * Parses a string in quotes
 *
 * @param $string A string specified with enclosing quotes
 * @return The string parsed from inside the quotes
 */
function _locale_import_parse_quoted($string) {
  if (substr($string, 0, 1) != substr($string, -1, 1)) {
    return FALSE;   // Start and end quotes must be the same
  }
  $quote = substr($string, 0, 1);
  $string = substr($string, 1, -1);
  if ($quote == '"') {        // Double quotes: strip slashes
    return stripcslashes($string);
  }
  elseif ($quote == "'") {  // Simple quote: return as-is
    return $string;
  }
  else {
    return FALSE;             // Unrecognized quote
  }
}

/**
 * Exports a Portable Object (Template) file for a language
 *
 * @param $language Selects a language to generate the output for
 */
function _locale_export_po($language) {
  global $user;

  // Get language specific strings, or all strings
  if ($language) {
    $meta = db_fetch_object(db_query("SELECT * FROM {locales_meta} WHERE locale = '%s'", $language));
    $result = db_query("SELECT s.lid, s.source, s.location, t.translation, t.plid, t.plural FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid WHERE t.locale = '%s' ORDER BY t.plid, t.plural", $language);
  }
  else {
    $result = db_query("SELECT s.lid, s.source, s.location, t.plid, t.plural FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid ORDER BY t.plid, t.plural");
  }

  // Build array out of the database results
  $parent = array();
  while ($child = db_fetch_object($result)) {
    if ($child->source != '') {
      $parent[$child->lid]['comment'] = $child->location;
      $parent[$child->lid]['msgid'] = $child->source;
      $parent[$child->lid]['translation'] = $child->translation;
      if ($child->plid) {
        $parent[$child->lid]['child'] = 1;
        $parent[$child->plid]['plural'] = $child->lid;
      }
    }
  }

  // Generating Portable Object file for a language
  if ($language) {
    $filename = $language .'.po';
    $header .= "# $meta->name translation of ". variable_get('site_name', 'Drupal') ."\n";
    $header .= '# Copyright (c) '. date('Y') .' '. $user->name .' <'. $user->mail .">\n";
    $header .= "#\n";
    $header .= "msgid \"\"\n";
    $header .= "msgstr \"\"\n";
    $header .= "\"Project-Id-Version: PROJECT VERSION\\n\"\n";
    $header .= "\"POT-Creation-Date: ". date("Y-m-d H:iO") ."\\n\"\n";
    $header .= "\"PO-Revision-Date: ". date("Y-m-d H:iO") ."\\n\"\n";
    $header .= "\"Last-Translator: ". $user->name .' <'. $user->mail .">\\n\"\n";
    $header .= "\"Language-Team: ". $meta->name .' <'. $user->mail .">\\n\"\n";
    $header .= "\"MIME-Version: 1.0\\n\"\n";
    $header .= "\"Content-Type: text/plain; charset=utf-8\\n\"\n";
    $header .= "\"Content-Transfer-Encoding: 8bit\\n\"\n";
    if ($meta->formula && $meta->plurals) {
      $header .= "\"Plural-Forms: nplurals=". $meta->plurals ."; plural=". strtr($meta->formula, array('$' => '')) .";\\n\"\n";
    }
    $header .= "\n";
    watchdog('locale', t('Exported %locale translation file: %filename.', array('%locale' => theme('placeholder', $meta->name), '%filename' => theme('placeholder', $filename))));
  }

  // Generating Portable Object Template
  else {
    $filename = 'drupal.pot';
    $header .= "# LANGUAGE translation of PROJECT\n";
    $header .= "# Copyright (c) YEAR NAME <EMAIL@ADDRESS>\n";
    $header .= "#\n";
    $header .= "msgid \"\"\n";
    $header .= "msgstr \"\"\n";
    $header .= "\"Project-Id-Version: PROJECT VERSION\\n\"\n";
    $header .= "\"POT-Creation-Date: ". date("Y-m-d H:iO") ."\\n\"\n";
    $header .= "\"PO-Revision-Date: YYYY-mm-DD HH:MM+ZZZZ\\n\"\n";
    $header .= "\"Last-Translator: NAME <EMAIL@ADDRESS>\\n\"\n";
    $header .= "\"Language-Team: LANGUAGE <EMAIL@ADDRESS>\\n\"\n";
    $header .= "\"MIME-Version: 1.0\\n\"\n";
    $header .= "\"Content-Type: text/plain; charset=utf-8\\n\"\n";
    $header .= "\"Content-Transfer-Encoding: 8bit\\n\"\n";
    $header .= "\"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\\n\"\n";
    $header .= "\n";
    watchdog('locale', t('Exported translation file: %filename.', array('%filename' => theme('placeholder', $filename))));
  }

  // Start download process
  header("Content-Disposition: attachment; filename=$filename");
  header("Content-Type: text/plain; charset=utf-8");

  print $header;

  foreach ($parent as $lid => $message) {
    if (!isset($message['child'])) {
      if ($message['comment']) {
        print '#: '. $message['comment'] ."\n";
      }
      print 'msgid '. _locale_export_print($message['msgid']);
      if ($plural = $message['plural']) {
        print 'msgid_plural '. _locale_export_print($parent[$plural]['msgid']);
        if ($language) {
          $translation = $message['translation'];
          for ($i = 0; $i < $meta->plurals; $i++) {
            print 'msgstr['. $i .'] '. _locale_export_print($translation);
            if ($plural) {
              $translation = $parent[$plural]['translation'];
              if ($i > 1) {
                $translation = _locale_export_remove_plural($translation);
              }
              $plural = $parent[$plural]['plural'];
            }
            else {
              $translation = '';
            }
          }
        }
        else {
          print 'msgstr[0] ""'. "\n";
          print 'msgstr[1] ""'. "\n";
        }
      }
      else {
        if ($language) {
          print 'msgstr '. _locale_export_print($message['translation']);
        }
        else {
          print 'msgstr ""'. "\n";
        }
      }
      print "\n";
    }
  }
  die();
}

/**
 * Print out a string on multiple lines
 */
function _locale_export_print($str) {
  $stri = addcslashes($str, "\0..\37\\\"");
  $parts = array();

  // Cut text into several lines
  while ($stri != "") {
    $i = strpos($stri, "\\n");
    if ($i === FALSE) {
      $curstr = $stri;
      $stri = "";
    }
    else {
      $curstr = substr($stri, 0, $i + 2);
      $stri = substr($stri, $i + 2);
    }
    $curparts = explode("\n", _locale_export_wrap($curstr, 70));
    $parts = array_merge($parts, $curparts);
  }

  if (count($parts) > 1) {
    return "\"\"\n\"". implode("\"\n\"", $parts) ."\"\n";
  }
  else {
    return "\"$parts[0]\"\n";
  }
}

/**
 * Custom word wrapping for Portable Object (Template) files.
 *
 * @author Jacobo Tarrio
 */
function _locale_export_wrap($str, $len) {
  $words = explode(' ', $str);
  $ret = array();

  $cur = "";
  $nstr = 1;
  while (count($words)) {
    $word = array_shift($words);
    if ($nstr) {
      $cur = $word;
      $nstr = 0;
    }
    elseif (strlen("$cur $word") > $len) {
      $ret[] = $cur . " ";
      $cur = $word;
    }
    else {
      $cur = "$cur $word";
    }
  }
  $ret[] = $cur;

  return implode("\n", $ret);
}

/**
 * Removes plural index information from a string
 */
function _locale_export_remove_plural($entry) {
  return preg_replace('/(%count)\[[0-9]\]/', '\\1', $entry);
}

/**
 * List languages in search result table
 */
function _locale_string_language_list($translation) {
  $languages = locale_supported_languages(FALSE, TRUE);
  unset($languages['name']['en']);
  $output = '';
  foreach ($languages['name'] as $key => $value) {
    if (isset($translation[$key])) {
      $output .= ($translation[$key] != '') ? $key .' ' : "<em class=\"locale-untranslated\">$key</em> ";
    }
  }

  return $output;
}

/**
 * Build object out of search criteria specified in request variables
 */
function _locale_string_seek_query() {
  static $query = NULL;

  if (is_null($query)) {
    $fields = array('string', 'language', 'searchin');
    $query = new StdClass;
    if (is_array($_REQUEST['edit'])) {
      foreach ($_REQUEST['edit'] as $key => $value) {
        if (!empty($value) && in_array($key, $fields)) {
          $query->$key = $value;
        }
      }
    }
    else {
      foreach ($_REQUEST as $key => $value) {
        if (!empty($value) && in_array($key, $fields)) {
          $query->$key = strpos(',', $value) ? explode(',', $value) : $value;
        }
      }
    }
  }
  return $query;
}

/**
 * Perform a string search and display results in a table
 */
function _locale_string_seek() {
  // We have at least one criterion to match
  if ($query = _locale_string_seek_query()) {
    $join = "SELECT s.source, s.location, s.lid, t.translation, t.locale FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid ";

    $arguments = array();
    // Compute LIKE section
    switch ($query->searchin) {
      case 'translated':
        $where = "WHERE (t.translation LIKE '%%%s%%' AND t.translation != '')";
        $orderby = "ORDER BY t.translation";
        $arguments[] = $query->string;
        break;
      case 'untranslated':
        $where = "WHERE (s.source LIKE '%%%s%%' AND t.translation = '')";
        $orderby = "ORDER BY s.source";
        $arguments[] = $query->string;
        break;
      case 'all' :
      default:
        $where = "WHERE (s.source LIKE '%%%s%%' OR t.translation LIKE '%%%s%%')";
        $orderby = '';
        $arguments[] = $query->string;
        $arguments[] = $query->string;
        break;
    }

    switch ($query->language) {
      // Force search in source strings
      case "en":
        $sql = $join ." WHERE s.source LIKE '%%%s%%' ORDER BY s.source";
        $arguments = array($query->string); // $where is not used, discard its arguments
        break;
      // Search in all languages
      case "all":
        $sql = "$join $where $orderby";
        break;
      // Some different language
      default:
        $sql = "$join $where AND t.locale = '%s' $orderby";
        $arguments[] = $query->language;
    }

    $result = pager_query($sql, 50, 0, NULL, $arguments);

    $header = array(t('String'), t('Locales'), array('data' => t('Operations'), 'colspan' => '2'));
    $arr = array();
    while ($locale = db_fetch_object($result)) {
      $arr[$locale->lid]['locales'][$locale->locale] = $locale->translation;
      $arr[$locale->lid]['location'] = $locale->location;
      $arr[$locale->lid]['source'] = $locale->source;
    }
    foreach ($arr as $lid => $value) {
      $rows[] = array(array('data' => check_plain(truncate_utf8($value['source'], 150, FALSE, TRUE)) .'<br /><small>'. $value['location'] .'</small>'), array('data' => _locale_string_language_list($value['locales']), 'align' => 'center'), array('data' => l(t('edit'), "admin/locale/string/edit/$lid"), 'class' => 'nowrap'), array('data' => l(t('delete'), "admin/locale/string/delete/$lid"), 'class' => 'nowrap'));
    }

    $request = array();
    if (count($query)) {
      foreach ($query as $key => $value) {
        $request[$key] = (is_array($value)) ? implode(',', $value) : $value;
      }
    }

    if (count($rows)) {
      $output .= theme('table', $header, $rows);
    }
    if ($pager = theme('pager', NULL, 50, 0, $request)) {
      $output .= $pager;
    }
  }

  return $output;
}

// ---------------------------------------------------------------------------------
// List of some of the most common languages (administration only)

/**
 * Prepares the language code list for a select form item with only the unsupported ones
 */
function _locale_prepare_iso_list() {
  $languages = locale_supported_languages(FALSE, TRUE);
  $isocodes = _locale_get_iso639_list();
  foreach ($isocodes as $key => $value) {
    if (isset($languages['name'][$key])) {
      unset($isocodes[$key]);
      continue;
    }
    if (count($value) == 2) {
      $tname = t($value[0]);
      $isocodes[$key] = ($tname == $value[1]) ? $tname : "$tname ($value[1])";
    }
    else {
      $isocodes[$key] = t($value[0]);
    }
  }
  asort($isocodes);
  return $isocodes;
}

/**
 * Some of the common languages with their English and native names
 *
 * Based on ISO 639 and http://people.w3.org/rishida/names/languages.html
 */
function _locale_get_iso639_list() {
  return array(
    "aa" => array("Afar"),
    "ab" => array("Abkhazian", "аҧсуа бызшәа"),
    "ae" => array("Avestan"),
    "af" => array("Afrikaans"),
    "ak" => array("Akan"),
    "am" => array("Amharic", "አማርኛ"),
    "ar" => array("Arabic", "العربية"),
    "as" => array("Assamese"),
    "av" => array("Avar"),
    "ay" => array("Aymara"),
    "az" => array("Azerbaijani", "azərbaycan"),
    "ba" => array("Bashkir"),
    "be" => array("Belarusian", "Беларуская"),
    "bg" => array("Bulgarian", "Български"),
    "bh" => array("Bihari"),
    "bi" => array("Bislama"),
    "bm" => array("Bambara", "Bamanankan"),
    "bn" => array("Bengali"),
    "bo" => array("Tibetan"),
    "br" => array("Breton"),
    "bs" => array("Bosnian", "Bosanski"),
    "ca" => array("Catalan", "Català"),
    "ce" => array("Chechen"),
    "ch" => array("Chamorro"),
    "co" => array("Corsican"),
    "cr" => array("Cree"),
    "cs" => array("Czech", "Čeština"),
    "cu" => array("Old Slavonic"),
    "cv" => array("Chuvash"),
    "cy" => array("Welsh", "Cymraeg"),
    "da" => array("Danish", "Dansk"),
    "de" => array("German", "Deutsch"),
    "dv" => array("Maldivian"),
    "dz" => array("Bhutani"),
    "ee" => array("Ewe", "Ɛʋɛ"),
    "el" => array("Greek", "Ελληνικά"),
    "en" => array("English"),
    "eo" => array("Esperanto"),
    "es" => array("Spanish", "Español"),
    "et" => array("Estonian", "Eesti"),
    "eu" => array("Basque", "Euskera"),
    "fa" => array("Persian", "فارسی"),
    "ff" => array("Fulah", "Fulfulde"),
    "fi" => array("Finnish", "Suomi"),
    "fj" => array("Fiji"),
    "fo" => array("Faeroese"),
    "fr" => array("French", "Français"),
    "fy" => array("Frisian", "Frysk"),
    "ga" => array("Irish", "Gaeilge"),
    "gd" => array("Scots Gaelic"),
    "gl" => array("Galician", "Galego"),
    "gn" => array("Guarani"),
    "gu" => array("Gujarati"),
    "gv" => array("Manx"),
    "ha" => array("Hausa"),
    "he" => array("Hebrew", "עברית"),
    "hi" => array("Hindi", "हिन्दी"),
    "ho" => array("Hiri Motu"),
    "hr" => array("Croatian", "Hrvatski"),
    "hu" => array("Hungarian", "Magyar"),
    "hy" => array("Armenian", "Հայերեն"),
    "hz" => array("Herero"),
    "ia" => array("Interlingua"),
    "id" => array("Indonesian", "Bahasa Indonesia"),
    "ie" => array("Interlingue"),
    "ig" => array("Igbo"),
    "ik" => array("Inupiak"),
    "is" => array("Icelandic", "Íslenska"),
    "it" => array("Italian", "Italiano"),
    "iu" => array("Inuktitut"),
    "ja" => array("Japanese", "日本語"),
    "jv" => array("Javanese"),
    "ka" => array("Georgian"),
    "kg" => array("Kongo"),
    "ki" => array("Kikuyu"),
    "kj" => array("Kwanyama"),
    "kk" => array("Kazakh", "Қазақ"),
    "kl" => array("Greenlandic"),
    "km" => array("Cambodian"),
    "kn" => array("Kannada", "ಕನ್ನಡ"),
    "ko" => array("Korean", "한국어"),
    "kr" => array("Kanuri"),
    "ks" => array("Kashmiri"),
    "ku" => array("Kurdish", "Kurdî"),
    "kv" => array("Komi"),
    "kw" => array("Cornish"),
    "ky" => array("Kirghiz", "Кыргыз"),
    "la" => array("Latin", "Latina"),
    "lb" => array("Luxembourgish"),
    "lg" => array("Luganda"),
    "ln" => array("Lingala"),
    "lo" => array("Laothian"),
    "lt" => array("Lithuanian", "Lietuviškai"),
    "lv" => array("Latvian", "Latviešu"),
    "mg" => array("Malagasy"),
    "mh" => array("Marshallese"),
    "mi" => array("Maori"),
    "mk" => array("Macedonian", "Македонски"),
    "ml" => array("Malayalam", "മലയാളം"),
    "mn" => array("Mongolian"),
    "mo" => array("Moldavian"),
    "mr" => array("Marathi"),
    "ms" => array("Malay", "Bahasa Melayu"),
    "mt" => array("Maltese", "Malti"),
    "my" => array("Burmese"),
    "na" => array("Nauru"),
    "nd" => array("North Ndebele"),
    "ne" => array("Nepali"),
    "ng" => array("Ndonga"),
    "nl" => array("Dutch", "Nederlands"),
    "no" => array("Norwegian", "Norsk"),
    "nr" => array("South Ndebele"),
    "nv" => array("Navajo"),
    "ny" => array("Chichewa"),
    "oc" => array("Occitan"),
    "om" => array("Oromo"),
    "or" => array("Oriya"),
    "os" => array("Ossetian"),
    "pa" => array("Punjabi"),
    "pi" => array("Pali"),
    "pl" => array("Polish", "Polski"),
    "ps" => array("Pashto", "پښتو"),
    "pt" => array("Portuguese", "Português"),
    "qu" => array("Quechua"),
    "rm" => array("Rhaeto-Romance"),
    "rn" => array("Kirundi"),
    "ro" => array("Romanian", "Română"),
    "ru" => array("Russian", "Русский"),
    "rw" => array("Kinyarwanda"),
    "sa" => array("Sanskrit"),
    "sc" => array("Sardinian"),
    "sd" => array("Sindhi"),
    "se" => array("Northern Sami"),
    "sg" => array("Sango"),
    "sh" => array("Serbo-Croatian"),
    "si" => array("Singhalese"),
    "sk" => array("Slovak", "Slovenčina"),
    "sl" => array("Slovenian", "Slovenščina"),
    "sm" => array("Samoan"),
    "sn" => array("Shona"),
    "so" => array("Somali"),
    "sq" => array("Albanian", "Shqip"),
    "sr" => array("Serbian", "Српски"),
    "ss" => array("Siswati"),
    "st" => array("Sesotho"),
    "su" => array("Sudanese"),
    "sv" => array("Swedish", "Svenska"),
    "sw" => array("Swahili", "Kiswahili"),
    "ta" => array("Tamil", "தமிழ்"),
    "te" => array("Telugu", "తెలుగు"),
    "tg" => array("Tajik"),
    "th" => array("Thai", "ภาษาไทย"),
    "ti" => array("Tigrinya"),
    "tk" => array("Turkmen"),
    "tl" => array("Tagalog"),
    "tn" => array("Setswana"),
    "to" => array("Tonga"),
    "tr" => array("Turkish", "Türkçe"),
    "ts" => array("Tsonga"),
    "tt" => array("Tatar", "Tatarça"),
    "tw" => array("Twi"),
    "ty" => array("Tahitian"),
    "ug" => array("Uighur"),
    "uk" => array("Ukrainian", "Українська"),
    "ur" => array("Urdu", "اردو"),
    "uz" => array("Uzbek", "o'zbek"),
    "ve" => array("Venda"),
    "vi" => array("Vietnamese", "Tiếng Việt"),
    "wo" => array("Wolof"),
    "xh" => array("Xhosa", "isiXhosa"),
    "yi" => array("Yiddish"),
    "yo" => array("Yoruba", "Yorùbá"),
    "za" => array("Zhuang"),
    "zh-hans" => array("Chinese, Simplified", "简体中文"),
    "zh-hant" => array("Chinese, Traditional", "繁體中文"),
    "zu" => array("Zulu", "isiZulu"),
  );
}