summaryrefslogtreecommitdiffstats
path: root/gettext-tools/src/msggrep.c
blob: b0cb87ab25df4f1d80850b94bf37eed1ab4ab249 (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
/* Extract some translations of a translation catalog.
   Copyright (C) 2001-2007, 2009-2010, 2012, 2015 Free Software
   Foundation, Inc.
   Written by Bruno Haible <haible@clisp.cons.org>, 2001.

   This program 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 3 of the License, or
   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */


#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <alloca.h>

#include <assert.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <unistd.h>
#if defined _MSC_VER || defined __MINGW32__
# include <io.h>
#endif

#include <fnmatch.h>

#include "closeout.h"
#include "dir-list.h"
#include "error.h"
#include "error-progname.h"
#include "progname.h"
#include "relocatable.h"
#include "basename.h"
#include "message.h"
#include "read-catalog.h"
#include "read-po.h"
#include "read-properties.h"
#include "read-stringtable.h"
#include "write-catalog.h"
#include "write-po.h"
#include "write-properties.h"
#include "write-stringtable.h"
#include "color.h"
#include "str-list.h"
#include "msgl-charset.h"
#include "xalloc.h"
#include "xmalloca.h"
#include "libgrep.h"
#include "propername.h"
#include "gettext.h"

#define _(str) gettext (str)


/* Force output of PO file even if empty.  */
static int force_po;

/* Output only non-matching messages.  */
static bool invert_match = false;

/* Selected source files.  */
static string_list_ty *location_files;

/* Selected domain names.  */
static string_list_ty *domain_names;

/* Task for each grep pass.  */
struct grep_task {
  matcher_t *matcher;
  size_t pattern_count;
  char *patterns;
  size_t patterns_size;
  bool case_insensitive;
  void *compiled_patterns;
};
static struct grep_task grep_task[5];

/* Long options.  */
static const struct option long_options[] =
{
  { "add-location", optional_argument, NULL, 'n' },
  { "color", optional_argument, NULL, CHAR_MAX + 9 },
  { "comment", no_argument, NULL, 'C' },
  { "directory", required_argument, NULL, 'D' },
  { "domain", required_argument, NULL, 'M' },
  { "escape", no_argument, NULL, CHAR_MAX + 1 },
  { "extended-regexp", no_argument, NULL, 'E' },
  { "extracted-comment", no_argument, NULL, 'X' },
  { "file", required_argument, NULL, 'f' },
  { "fixed-strings", no_argument, NULL, 'F' },
  { "force-po", no_argument, &force_po, 1 },
  { "help", no_argument, NULL, 'h' },
  { "ignore-case", no_argument, NULL, 'i' },
  { "indent", no_argument, NULL, CHAR_MAX + 2 },
  { "invert-match", no_argument, NULL, 'v' },
  { "location", required_argument, NULL, 'N' },
  { "msgctxt", no_argument, NULL, 'J' },
  { "msgid", no_argument, NULL, 'K' },
  { "msgstr", no_argument, NULL, 'T' },
  { "no-escape", no_argument, NULL, CHAR_MAX + 3 },
  { "no-location", no_argument, NULL, CHAR_MAX + 11 },
  { "no-wrap", no_argument, NULL, CHAR_MAX + 6 },
  { "output-file", required_argument, NULL, 'o' },
  { "properties-input", no_argument, NULL, 'P' },
  { "properties-output", no_argument, NULL, 'p' },
  { "regexp", required_argument, NULL, 'e' },
  { "sort-by-file", no_argument, NULL, CHAR_MAX + 4 },
  { "sort-output", no_argument, NULL, CHAR_MAX + 5 },
  { "strict", no_argument, NULL, 'S' },
  { "stringtable-input", no_argument, NULL, CHAR_MAX + 7 },
  { "stringtable-output", no_argument, NULL, CHAR_MAX + 8 },
  { "style", required_argument, NULL, CHAR_MAX + 10 },
  { "version", no_argument, NULL, 'V' },
  { "width", required_argument, NULL, 'w' },
  { NULL, 0, NULL, 0 }
};


/* Forward declaration of local functions.  */
static void no_pass (int opt)
#if defined __GNUC__ && ((__GNUC__ == 2 && __GNUC_MINOR__ >= 5) || __GNUC__ > 2)
        __attribute__ ((noreturn))
#endif
;
static void usage (int status)
#if defined __GNUC__ && ((__GNUC__ == 2 && __GNUC_MINOR__ >= 5) || __GNUC__ > 2)
        __attribute__ ((noreturn))
#endif
;
static msgdomain_list_ty *process_msgdomain_list (msgdomain_list_ty *mdlp);


int
main (int argc, char **argv)
{
  int opt;
  bool do_help;
  bool do_version;
  char *output_file;
  const char *input_file;
  int grep_pass;
  msgdomain_list_ty *result;
  catalog_input_format_ty input_syntax = &input_format_po;
  catalog_output_format_ty output_syntax = &output_format_po;
  bool sort_by_filepos = false;
  bool sort_by_msgid = false;
  size_t i;

  /* Set program name for messages.  */
  set_program_name (argv[0]);
  error_print_progname = maybe_print_progname;

#ifdef HAVE_SETLOCALE
  /* Set locale via LC_ALL.  */
  setlocale (LC_ALL, "");
#endif

  /* Set the text message domain.  */
  bindtextdomain (PACKAGE, relocate (LOCALEDIR));
  bindtextdomain ("bison-runtime", relocate (BISON_LOCALEDIR));
  textdomain (PACKAGE);

  /* Ensure that write errors on stdout are detected.  */
  atexit (close_stdout);

  /* Set default values for variables.  */
  do_help = false;
  do_version = false;
  output_file = NULL;
  input_file = NULL;
  grep_pass = -1;
  location_files = string_list_alloc ();
  domain_names = string_list_alloc ();

  for (i = 0; i < 5; i++)
    {
      struct grep_task *gt = &grep_task[i];

      gt->matcher = &matcher_grep;
      gt->pattern_count = 0;
      gt->patterns = NULL;
      gt->patterns_size = 0;
      gt->case_insensitive = false;
    }

  while ((opt = getopt_long (argc, argv, "CD:e:Ef:FhiJKM:n:N:o:pPTvVw:X",
                             long_options, NULL))
         != EOF)
    switch (opt)
      {
      case '\0':                /* Long option.  */
        break;

      case 'C':
        grep_pass = 3;
        break;

      case 'D':
        dir_list_append (optarg);
        break;

      case 'e':
        if (grep_pass < 0)
          no_pass (opt);
        {
          struct grep_task *gt = &grep_task[grep_pass];
          /* Append optarg and a newline to gt->patterns.  */
          size_t len = strlen (optarg);
          gt->patterns =
            (char *) xrealloc (gt->patterns, gt->patterns_size + len + 1);
          memcpy (gt->patterns + gt->patterns_size, optarg, len);
          gt->patterns_size += len;
          *(gt->patterns + gt->patterns_size) = '\n';
          gt->patterns_size += 1;
          gt->pattern_count++;
        }
        break;

      case 'E':
        if (grep_pass < 0)
          no_pass (opt);
        grep_task[grep_pass].matcher = &matcher_egrep;
        break;

      case 'f':
        if (grep_pass < 0)
          no_pass (opt);
        {
          struct grep_task *gt = &grep_task[grep_pass];
          /* Append the contents of the specified file to gt->patterns.  */
          FILE *fp = fopen (optarg, "r");

          if (fp == NULL)
            error (EXIT_FAILURE, errno, _("\
error while opening \"%s\" for reading"), optarg);

          while (!feof (fp))
            {
              char buf[4096];
              size_t count = fread (buf, 1, sizeof buf, fp);

              if (count == 0)
                {
                  if (ferror (fp))
                    error (EXIT_FAILURE, errno, _("\
error while reading \"%s\""), optarg);
                  /* EOF reached.  */
                  break;
                }

              gt->patterns =
                (char *) xrealloc (gt->patterns, gt->patterns_size + count);
              memcpy (gt->patterns + gt->patterns_size, buf, count);
              gt->patterns_size += count;
            }

          /* Append a final newline if file ended in a non-newline.  */
          if (gt->patterns_size > 0
              && *(gt->patterns + gt->patterns_size - 1) != '\n')
            {
              gt->patterns =
                (char *) xrealloc (gt->patterns, gt->patterns_size + 1);
              *(gt->patterns + gt->patterns_size) = '\n';
              gt->patterns_size += 1;
            }

          fclose (fp);
          gt->pattern_count++;
        }
        break;

      case 'F':
        if (grep_pass < 0)
          no_pass (opt);
        grep_task[grep_pass].matcher = &matcher_fgrep;
        break;

      case 'h':
        do_help = true;
        break;

      case 'i':
        if (grep_pass < 0)
          no_pass (opt);
        grep_task[grep_pass].case_insensitive = true;
        break;

      case 'J':
        grep_pass = 0;
        break;

      case 'K':
        grep_pass = 1;
        break;

      case 'M':
        string_list_append (domain_names, optarg);
        break;

      case 'n':
        if (handle_filepos_comment_option (optarg))
          usage (EXIT_FAILURE);
        break;

      case 'N':
        string_list_append (location_files, optarg);
        break;

      case 'o':
        output_file = optarg;
        break;

      case 'p':
        output_syntax = &output_format_properties;
        break;

      case 'P':
        input_syntax = &input_format_properties;
        break;

      case 'S':
        message_print_style_uniforum ();
        break;

      case 'T':
        grep_pass = 2;
        break;

      case 'v':
        invert_match = true;
        break;

      case 'V':
        do_version = true;
        break;

      case 'w':
        {
          int value;
          char *endp;
          value = strtol (optarg, &endp, 10);
          if (endp != optarg)
            message_page_width_set (value);
        }
        break;

      case 'X':
        grep_pass = 4;
        break;

      case CHAR_MAX + 1:
        message_print_style_escape (true);
        break;

      case CHAR_MAX + 2:
        message_print_style_indent ();
        break;

      case CHAR_MAX + 3:
        message_print_style_escape (false);
        break;

      case CHAR_MAX + 4:
        sort_by_filepos = true;
        break;

      case CHAR_MAX + 5:
        sort_by_msgid = true;
        break;

      case CHAR_MAX + 6: /* --no-wrap */
        message_page_width_ignore ();
        break;

      case CHAR_MAX + 7: /* --stringtable-input */
        input_syntax = &input_format_stringtable;
        break;

      case CHAR_MAX + 8: /* --stringtable-output */
        output_syntax = &output_format_stringtable;
        break;

      case CHAR_MAX + 9: /* --color */
        if (handle_color_option (optarg) || color_test_mode)
          usage (EXIT_FAILURE);
        break;

      case CHAR_MAX + 10: /* --style */
        handle_style_option (optarg);
        break;

      case CHAR_MAX + 11: /* --no-location */
        message_print_style_filepos (filepos_comment_none);
        break;

      default:
        usage (EXIT_FAILURE);
        break;
      }

  /* Version information is requested.  */
  if (do_version)
    {
      printf ("%s (GNU %s) %s\n", basename (program_name), PACKAGE, VERSION);
      /* xgettext: no-wrap */
      printf (_("Copyright (C) %s Free Software Foundation, Inc.\n\
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
This is free software: you are free to change and redistribute it.\n\
There is NO WARRANTY, to the extent permitted by law.\n\
"),
              "2001-2010");
      printf (_("Written by %s.\n"), proper_name ("Bruno Haible"));
      exit (EXIT_SUCCESS);
    }

  /* Help is requested.  */
  if (do_help)
    usage (EXIT_SUCCESS);

  /* Test whether we have an .po file name as argument.  */
  if (optind == argc)
    input_file = "-";
  else if (optind + 1 == argc)
    input_file = argv[optind];
  else
    {
      error (EXIT_SUCCESS, 0, _("at most one input file allowed"));
      usage (EXIT_FAILURE);
    }

  /* Verify selected options.  */
  if (sort_by_msgid && sort_by_filepos)
    error (EXIT_FAILURE, 0, _("%s and %s are mutually exclusive"),
           "--sort-output", "--sort-by-file");

  /* Compile the patterns.  */
  for (grep_pass = 0; grep_pass < 5; grep_pass++)
    {
      struct grep_task *gt = &grep_task[grep_pass];

      if (gt->pattern_count > 0)
        {
          if (gt->patterns_size > 0)
            {
              /* Strip trailing newline.  */
              assert (gt->patterns[gt->patterns_size - 1] == '\n');
              gt->patterns_size--;
            }
          gt->compiled_patterns =
            gt->matcher->compile (gt->patterns, gt->patterns_size,
                                  gt->case_insensitive, false, false, '\n');
        }
    }

  /* Read input file.  */
  result = read_catalog_file (input_file, input_syntax);

  if (grep_task[0].pattern_count > 0
      || grep_task[1].pattern_count > 0
      || grep_task[2].pattern_count > 0
      || grep_task[3].pattern_count > 0
      || grep_task[4].pattern_count > 0)
    {
      /* Warn if the current locale is not suitable for this PO file.  */
      compare_po_locale_charsets (result);
    }

  /* Select the messages.  */
  result = process_msgdomain_list (result);

  /* Sort the results.  */
  if (sort_by_filepos)
    msgdomain_list_sort_by_filepos (result);
  else if (sort_by_msgid)
    msgdomain_list_sort_by_msgid (result);

  /* Write the merged message list out.  */
  msgdomain_list_print (result, output_file, output_syntax, force_po, false);

  exit (EXIT_SUCCESS);
}


static void
no_pass (int opt)
{
  error (EXIT_SUCCESS, 0,
         _("option '%c' cannot be used before 'J' or 'K' or 'T' or 'C' or 'X' has been specified"),
         opt);
  usage (EXIT_FAILURE);
}


/* Display usage information and exit.  */
static void
usage (int status)
{
  if (status != EXIT_SUCCESS)
    fprintf (stderr, _("Try '%s --help' for more information.\n"),
             program_name);
  else
    {
      printf (_("\
Usage: %s [OPTION] [INPUTFILE]\n\
"), program_name);
      printf ("\n");
      /* xgettext: no-wrap */
      printf (_("\
Extracts all messages of a translation catalog that match a given pattern\n\
or belong to some given source files.\n\
"));
      printf ("\n");
      printf (_("\
Mandatory arguments to long options are mandatory for short options too.\n"));
      printf ("\n");
      printf (_("\
Input file location:\n"));
      printf (_("\
  INPUTFILE                   input PO file\n"));
      printf (_("\
  -D, --directory=DIRECTORY   add DIRECTORY to list for input files search\n"));
      printf (_("\
If no input file is given or if it is -, standard input is read.\n"));
      printf ("\n");
      printf (_("\
Output file location:\n"));
      printf (_("\
  -o, --output-file=FILE      write output to specified file\n"));
      printf (_("\
The results are written to standard output if no output file is specified\n\
or if it is -.\n"));
      printf ("\n");
      /* xgettext: no-wrap */
      printf (_("\
Message selection:\n\
  [-N SOURCEFILE]... [-M DOMAINNAME]...\n\
  [-J MSGCTXT-PATTERN] [-K MSGID-PATTERN] [-T MSGSTR-PATTERN]\n\
  [-C COMMENT-PATTERN] [-X EXTRACTED-COMMENT-PATTERN]\n\
A message is selected if it comes from one of the specified source files,\n\
or if it comes from one of the specified domains,\n\
or if -J is given and its context (msgctxt) matches MSGCTXT-PATTERN,\n\
or if -K is given and its key (msgid or msgid_plural) matches MSGID-PATTERN,\n\
or if -T is given and its translation (msgstr) matches MSGSTR-PATTERN,\n\
or if -C is given and the translator's comment matches COMMENT-PATTERN,\n\
or if -X is given and the extracted comment matches EXTRACTED-COMMENT-PATTERN.\n\
\n\
When more than one selection criterion is specified, the set of selected\n\
messages is the union of the selected messages of each criterion.\n\
\n\
MSGCTXT-PATTERN or MSGID-PATTERN or MSGSTR-PATTERN or COMMENT-PATTERN or\n\
EXTRACTED-COMMENT-PATTERN syntax:\n\
  [-E | -F] [-e PATTERN | -f FILE]...\n\
PATTERNs are basic regular expressions by default, or extended regular\n\
expressions if -E is given, or fixed strings if -F is given.\n\
\n\
  -N, --location=SOURCEFILE   select messages extracted from SOURCEFILE\n\
  -M, --domain=DOMAINNAME     select messages belonging to domain DOMAINNAME\n\
  -J, --msgctxt               start of patterns for the msgctxt\n\
  -K, --msgid                 start of patterns for the msgid\n\
  -T, --msgstr                start of patterns for the msgstr\n\
  -C, --comment               start of patterns for the translator's comment\n\
  -X, --extracted-comment     start of patterns for the extracted comment\n\
  -E, --extended-regexp       PATTERN is an extended regular expression\n\
  -F, --fixed-strings         PATTERN is a set of newline-separated strings\n\
  -e, --regexp=PATTERN        use PATTERN as a regular expression\n\
  -f, --file=FILE             obtain PATTERN from FILE\n\
  -i, --ignore-case           ignore case distinctions\n\
  -v, --invert-match          output only the messages that do not match any\n\
                              selection criterion\n\
"));
      printf ("\n");
      printf (_("\
Input file syntax:\n"));
      printf (_("\
  -P, --properties-input      input file is in Java .properties syntax\n"));
      printf (_("\
      --stringtable-input     input file is in NeXTstep/GNUstep .strings syntax\n"));
      printf ("\n");
      printf (_("\
Output details:\n"));
      printf (_("\
      --color                 use colors and other text attributes always\n\
      --color=WHEN            use colors and other text attributes if WHEN.\n\
                              WHEN may be 'always', 'never', 'auto', or 'html'.\n"));
      printf (_("\
      --style=STYLEFILE       specify CSS style rule file for --color\n"));
      printf (_("\
      --no-escape             do not use C escapes in output (default)\n"));
      printf (_("\
      --escape                use C escapes in output, no extended chars\n"));
      printf (_("\
      --force-po              write PO file even if empty\n"));
      printf (_("\
      --indent                indented output style\n"));
      printf (_("\
      --no-location           suppress '#: filename:line' lines\n"));
      printf (_("\
  -n, --add-location          preserve '#: filename:line' lines (default)\n"));
      printf (_("\
      --strict                strict Uniforum output style\n"));
      printf (_("\
  -p, --properties-output     write out a Java .properties file\n"));
      printf (_("\
      --stringtable-output    write out a NeXTstep/GNUstep .strings file\n"));
      printf (_("\
  -w, --width=NUMBER          set output page width\n"));
      printf (_("\
      --no-wrap               do not break long message lines, longer than\n\
                              the output page width, into several lines\n"));
      printf (_("\
      --sort-output           generate sorted output\n"));
      printf (_("\
      --sort-by-file          sort output by file location\n"));
      printf ("\n");
      printf (_("\
Informative output:\n"));
      printf (_("\
  -h, --help                  display this help and exit\n"));
      printf (_("\
  -V, --version               output version information and exit\n"));
      printf ("\n");
      /* TRANSLATORS: The placeholder indicates the bug-reporting address
         for this package.  Please add _another line_ saying
         "Report translation bugs to <...>\n" with the address for translation
         bugs (typically your translation team's web or email address).  */
      fputs (_("Report bugs to <bug-gnu-gettext@gnu.org>.\n"),
             stdout);
    }

  exit (status);
}


/* Return 1 if FILENAME is contained in a list of filename patterns,
   0 otherwise.  */
static bool
filename_list_match (const string_list_ty *slp, const char *filename)
{
  size_t j;

  for (j = 0; j < slp->nitems; ++j)
    if (fnmatch (slp->item[j], filename, FNM_PATHNAME) == 0)
      return true;
  return false;
}


#ifdef EINTR

/* EINTR handling for close().
   These functions can return -1/EINTR even though we don't have any
   signal handlers set up, namely when we get interrupted via SIGSTOP.  */

static inline int
nonintr_close (int fd)
{
  int retval;

  do
    retval = close (fd);
  while (retval < 0 && errno == EINTR);

  return retval;
}
#define close nonintr_close

#endif


/* Process a string STR of size LEN bytes through grep, and return true
   if it matches.  */
static bool
is_string_selected (int grep_pass, const char *str, size_t len)
{
  const struct grep_task *gt = &grep_task[grep_pass];

  if (gt->pattern_count > 0)
    {
      size_t match_size;
      size_t match_offset;

      match_offset =
        gt->matcher->execute (gt->compiled_patterns, str, len,
                              &match_size, false);
      return (match_offset != (size_t) -1);
    }
  else
    return 0;
}


/* Return true if a message matches, considering only the positive selection
   criteria and ignoring --invert-match.  */
static bool
is_message_selected_no_invert (const message_ty *mp)
{
  size_t i;
  const char *msgstr;
  size_t msgstr_len;
  const char *p;

  /* Test whether one of mp->filepos[] is selected.  */
  for (i = 0; i < mp->filepos_count; i++)
    if (filename_list_match (location_files, mp->filepos[i].file_name))
      return true;

  /* Test msgctxt using the --msgctxt arguments.  */
  if (mp->msgctxt != NULL
      && is_string_selected (0, mp->msgctxt, strlen (mp->msgctxt)))
    return true;

  /* Test msgid and msgid_plural using the --msgid arguments.  */
  if (is_string_selected (1, mp->msgid, strlen (mp->msgid)))
    return true;
  if (mp->msgid_plural != NULL
      && is_string_selected (1, mp->msgid_plural, strlen (mp->msgid_plural)))
    return true;

  /* Test msgstr using the --msgstr arguments.  */
  msgstr = mp->msgstr;
  msgstr_len = mp->msgstr_len;
  /* Process each NUL delimited substring separately.  */
  for (p = msgstr; p < msgstr + msgstr_len; )
    {
      size_t length = strlen (p);

      if (is_string_selected (2, p, length))
        return true;

      p += length + 1;
    }

  /* Test translator comments using the --comment arguments.  */
  if (grep_task[3].pattern_count > 0
      && mp->comment != NULL && mp->comment->nitems > 0)
    {
      size_t length;
      char *total_comment;
      char *q;
      size_t j;
      bool selected;

      length = 0;
      for (j = 0; j < mp->comment->nitems; j++)
        length += strlen (mp->comment->item[j]) + 1;
      total_comment = (char *) xmalloca (length);

      q = total_comment;
      for (j = 0; j < mp->comment->nitems; j++)
        {
          size_t l = strlen (mp->comment->item[j]);

          memcpy (q, mp->comment->item[j], l);
          q += l;
          *q++ = '\n';
        }
      if (q != total_comment + length)
        abort ();

      selected = is_string_selected (3, total_comment, length);

      freea (total_comment);

      if (selected)
        return true;
    }

  /* Test extracted comments using the --extracted-comment arguments.  */
  if (grep_task[4].pattern_count > 0
      && mp->comment_dot != NULL && mp->comment_dot->nitems > 0)
    {
      size_t length;
      char *total_comment;
      char *q;
      size_t j;
      bool selected;

      length = 0;
      for (j = 0; j < mp->comment_dot->nitems; j++)
        length += strlen (mp->comment_dot->item[j]) + 1;
      total_comment = (char *) xmalloca (length);

      q = total_comment;
      for (j = 0; j < mp->comment_dot->nitems; j++)
        {
          size_t l = strlen (mp->comment_dot->item[j]);

          memcpy (q, mp->comment_dot->item[j], l);
          q += l;
          *q++ = '\n';
        }
      if (q != total_comment + length)
        abort ();

      selected = is_string_selected (4, total_comment, length);

      freea (total_comment);

      if (selected)
        return true;
    }

  return false;
}


/* Return true if a message matches.  */
static bool
is_message_selected (const message_ty *mp)
{
  bool result;

  /* Always keep the header entry.  */
  if (is_header (mp))
    return true;

  result = is_message_selected_no_invert (mp);

  if (invert_match)
    return !result;
  else
    return result;
}


static void
process_message_list (const char *domain, message_list_ty *mlp)
{
  if (string_list_member (domain_names, domain))
    /* Keep all the messages in the list.  */
    ;
  else
    /* Keep only the selected messages.  */
    message_list_remove_if_not (mlp, is_message_selected);
}


static msgdomain_list_ty *
process_msgdomain_list (msgdomain_list_ty *mdlp)
{
  size_t k;

  for (k = 0; k < mdlp->nitems; k++)
    process_message_list (mdlp->item[k]->domain, mdlp->item[k]->messages);

  return mdlp;
}