File: gencat.c

package info (click to toggle)
glibc 2.19-18+deb8u7
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 204,748 kB
  • sloc: ansic: 970,427; asm: 241,207; sh: 10,069; makefile: 8,476; cpp: 3,595; perl: 2,077; pascal: 1,839; awk: 1,704; yacc: 317; sed: 73
file content (1357 lines) | stat: -rw-r--r-- 35,345 bytes parent folder | download | duplicates (10)
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
/* Copyright (C) 1996-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 1996.

   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; version 2 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 <argp.h>
#include <assert.h>
#include <ctype.h>
#include <endian.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <iconv.h>
#include <langinfo.h>
#include <locale.h>
#include <libintl.h>
#include <limits.h>
#include <nl_types.h>
#include <obstack.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>

#include "version.h"

#include "catgetsinfo.h"


#define SWAPU32(w) \
  (((w) << 24) | (((w) & 0xff00) << 8) | (((w) >> 8) & 0xff00) | ((w) >> 24))

struct message_list
{
  int number;
  const char *message;

  const char *fname;
  size_t line;
  const char *symbol;

  struct message_list *next;
};


struct set_list
{
  int number;
  int deleted;
  struct message_list *messages;
  int last_message;

  const char *fname;
  size_t line;
  const char *symbol;

  struct set_list *next;
};


struct catalog
{
  struct set_list *all_sets;
  struct set_list *current_set;
  size_t total_messages;
  wint_t quote_char;
  int last_set;

  struct obstack mem_pool;
};


/* If non-zero force creation of new file, not using existing one.  */
static int force_new;

/* Name of output file.  */
static const char *output_name;

/* Name of generated C header file.  */
static const char *header_name;

/* Name and version of program.  */
static void print_version (FILE *stream, struct argp_state *state);
void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;

#define OPT_NEW 1

/* Definitions of arguments for argp functions.  */
static const struct argp_option options[] =
{
  { "header", 'H', N_("NAME"), 0,
    N_("Create C header file NAME containing symbol definitions") },
  { "new", OPT_NEW, NULL, 0,
    N_("Do not use existing catalog, force new output file") },
  { "output", 'o', N_("NAME"), 0, N_("Write output to file NAME") },
  { NULL, 0, NULL, 0, NULL }
};

/* Short description of program.  */
static const char doc[] = N_("Generate message catalog.\
\vIf INPUT-FILE is -, input is read from standard input.  If OUTPUT-FILE\n\
is -, output is written to standard output.\n");

/* Strings for arguments in help texts.  */
static const char args_doc[] = N_("\
-o OUTPUT-FILE [INPUT-FILE]...\n[OUTPUT-FILE [INPUT-FILE]...]");

/* Prototype for option handler.  */
static error_t parse_opt (int key, char *arg, struct argp_state *state);

/* Function to print some extra text in the help message.  */
static char *more_help (int key, const char *text, void *input);

/* Data structure to communicate with argp functions.  */
static struct argp argp =
{
  options, parse_opt, args_doc, doc, NULL, more_help
};


/* Wrapper functions with error checking for standard functions.  */
#include <programs/xmalloc.h>

/* Prototypes for local functions.  */
static void error_print (void);
static struct catalog *read_input_file (struct catalog *current,
					const char *fname);
static void write_out (struct catalog *result, const char *output_name,
		       const char *header_name);
static struct set_list *find_set (struct catalog *current, int number);
static void normalize_line (const char *fname, size_t line, iconv_t cd,
			    wchar_t *string, wchar_t quote_char,
			    wchar_t escape_char);
static void read_old (struct catalog *catalog, const char *file_name);
static int open_conversion (const char *codesetp, iconv_t *cd_towcp,
			    iconv_t *cd_tombp, wchar_t *escape_charp);


int
main (int argc, char *argv[])
{
  struct catalog *result;
  int remaining;

  /* Set program name for messages.  */
  error_print_progname = error_print;

  /* Set locale via LC_ALL.  */
  setlocale (LC_ALL, "");

  /* Set the text message domain.  */
  textdomain (PACKAGE);

  /* Initialize local variables.  */
  result = NULL;

  /* Parse and process arguments.  */
  argp_parse (&argp, argc, argv, 0, &remaining, NULL);

  /* Determine output file.  */
  if (output_name == NULL)
    output_name = remaining < argc ? argv[remaining++] : "-";

  /* Process all input files.  */
  setlocale (LC_CTYPE, "C");
  if (remaining < argc)
    do
      result = read_input_file (result, argv[remaining]);
    while (++remaining < argc);
  else
    result = read_input_file (NULL, "-");

  /* Write out the result.  */
  if (result != NULL)
    write_out (result, output_name, header_name);

  return error_message_count != 0;
}


/* Handle program arguments.  */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)
{
  switch (key)
    {
    case 'H':
      header_name = arg;
      break;
    case OPT_NEW:
      force_new = 1;
      break;
    case 'o':
      output_name = arg;
      break;
    default:
      return ARGP_ERR_UNKNOWN;
    }
  return 0;
}


static char *
more_help (int key, const char *text, void *input)
{
  char *tp = NULL;
  switch (key)
    {
    case ARGP_KEY_HELP_EXTRA:
      /* We print some extra information.  */
      if (asprintf (&tp, gettext ("\
For bug reporting instructions, please see:\n\
%s.\n"), REPORT_BUGS_TO) < 0)
	return NULL;
      return tp;
    default:
      break;
    }
  return (char *) text;
}

/* Print the version information.  */
static void
print_version (FILE *stream, struct argp_state *state)
{
  fprintf (stream, "gencat %s%s\n", PKGVERSION, VERSION);
  fprintf (stream, gettext ("\
Copyright (C) %s Free Software Foundation, Inc.\n\
This is free software; see the source for copying conditions.  There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
"), "2014");
  fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
}


/* The address of this function will be assigned to the hook in the
   error functions.  */
static void
error_print (void)
{
  /* We don't want the program name to be printed in messages.  Emacs'
     compile.el does not like this.  */
}


static struct catalog *
read_input_file (struct catalog *current, const char *fname)
{
  FILE *fp;
  char *buf;
  size_t len;
  size_t line_number;
  wchar_t *wbuf;
  size_t wbufsize;
  iconv_t cd_towc = (iconv_t) -1;
  iconv_t cd_tomb = (iconv_t) -1;
  wchar_t escape_char = L'\\';
  char *codeset = NULL;

  if (strcmp (fname, "-") == 0 || strcmp (fname, "/dev/stdin") == 0)
    {
      fp = stdin;
      fname = gettext ("*standard input*");
    }
  else
    fp = fopen (fname, "r");
  if (fp == NULL)
    {
      error (0, errno, gettext ("cannot open input file `%s'"), fname);
      return current;
    }

  /* If we haven't seen anything yet, allocate result structure.  */
  if (current == NULL)
    {
      current = (struct catalog *) xcalloc (1, sizeof (*current));

#define obstack_chunk_alloc malloc
#define obstack_chunk_free free
      obstack_init (&current->mem_pool);

      current->current_set = find_set (current, NL_SETD);
    }

  buf = NULL;
  len = 0;
  line_number = 0;

  wbufsize = 1024;
  wbuf = (wchar_t *) xmalloc (wbufsize);

  while (!feof (fp))
    {
      int continued;
      int used;
      size_t start_line = line_number + 1;
      char *this_line;

      do
	{
	  int act_len;

	  act_len = getline (&buf, &len, fp);
	  if (act_len <= 0)
	    break;
	  ++line_number;

	  /* It the line continued?  */
	  continued = 0;
	  if (buf[act_len - 1] == '\n')
	    {
	      --act_len;

	      /* There might be more than one backslash at the end of
		 the line.  Only if there is an odd number of them is
		 the line continued.  */
	      if (act_len > 0 && buf[act_len - 1] == '\\')
		{
		  int temp_act_len = act_len;

		  do
		    {
		      --temp_act_len;
		      continued = !continued;
		    }
		  while (temp_act_len > 0 && buf[temp_act_len - 1] == '\\');

		  if (continued)
		    --act_len;
		}
	    }

	  /* Append to currently selected line.  */
	  obstack_grow (&current->mem_pool, buf, act_len);
	}
      while (continued);

      obstack_1grow (&current->mem_pool, '\0');
      this_line = (char *) obstack_finish (&current->mem_pool);

      used = 0;
      if (this_line[0] == '$')
	{
	  if (isblank (this_line[1]))
	    {
	      int cnt = 1;
	      while (isblank (this_line[cnt]))
		++cnt;
	      if (strncmp (&this_line[cnt], "codeset=", 8) != 0)
		/* This is a comment line. Do nothing.  */;
	      else if (codeset != NULL)
		/* Ignore multiple codeset. */;
	      else
		{
		  int start = cnt + 8;
		  cnt = start;
		  while (this_line[cnt] != '\0' && !isspace (this_line[cnt]))
		    ++cnt;
		  if (cnt != start)
		    {
		      int len = cnt - start;
		      codeset = xmalloc (len + 1);
		      *((char *) mempcpy (codeset, &this_line[start], len))
			= '\0';
		    }
		}
	    }
	  else if (strncmp (&this_line[1], "set", 3) == 0)
	    {
	      int cnt = sizeof ("set");
	      int set_number;
	      const char *symbol = NULL;
	      while (isspace (this_line[cnt]))
		++cnt;

	      if (isdigit (this_line[cnt]))
		{
		  set_number = atol (&this_line[cnt]);

		  /* If the given number for the character set is
		     higher than any we used for symbolic set names
		     avoid clashing by using only higher numbers for
		     the following symbolic definitions.  */
		  if (set_number > current->last_set)
		    current->last_set = set_number;
		}
	      else
		{
		  /* See whether it is a reasonable identifier.  */
		  int start = cnt;
		  while (isalnum (this_line[cnt]) || this_line[cnt] == '_')
		    ++cnt;

		  if (cnt == start)
		    {
		      /* No correct character found.  */
		      error_at_line (0, 0, fname, start_line,
				     gettext ("illegal set number"));
		      set_number = 0;
		    }
		  else
		    {
		      /* We have found seomthing that looks like a
			 correct identifier.  */
		      struct set_list *runp;

		      this_line[cnt] = '\0';
		      used = 1;
		      symbol = &this_line[start];

		      /* Test whether the identifier was already used.  */
		      runp = current->all_sets;
		      while (runp != 0)
			if (runp->symbol != NULL
			    && strcmp (runp->symbol, symbol) == 0)
			  break;
			else
			  runp = runp->next;

		      if (runp != NULL)
			{
			  /* We cannot allow duplicate identifiers for
			     message sets.  */
			  error_at_line (0, 0, fname, start_line,
					 gettext ("duplicate set definition"));
			  error_at_line (0, 0, runp->fname, runp->line,
					 gettext ("\
this is the first definition"));
			  set_number = 0;
			}
		      else
			/* Allocate next free message set for identifier.  */
			set_number = ++current->last_set;
		    }
		}

	      if (set_number != 0)
		{
		  /* We found a legal set number.  */
		  current->current_set = find_set (current, set_number);
		  if (symbol != NULL)
		      used = 1;
		  current->current_set->symbol = symbol;
		  current->current_set->fname = fname;
		  current->current_set->line = start_line;
		}
	    }
	  else if (strncmp (&this_line[1], "delset", 6) == 0)
	    {
	      int cnt = sizeof ("delset");
	      while (isspace (this_line[cnt]))
		++cnt;

	      if (isdigit (this_line[cnt]))
		{
		  size_t set_number = atol (&this_line[cnt]);
		  struct set_list *set;

		  /* Mark the message set with the given number as
		     deleted.  */
		  set = find_set (current, set_number);
		  set->deleted = 1;
		}
	      else
		{
		  /* See whether it is a reasonable identifier.  */
		  int start = cnt;
		  while (isalnum (this_line[cnt]) || this_line[cnt] == '_')
		    ++cnt;

		  if (cnt == start)
		    error_at_line (0, 0, fname, start_line,
				   gettext ("illegal set number"));
		  else
		    {
		      const char *symbol;
		      struct set_list *runp;

		      this_line[cnt] = '\0';
		      used = 1;
		      symbol = &this_line[start];

		      /* We have a symbolic set name.  This name must
			 appear somewhere else in the catalogs read so
			 far.  */
		      for (runp = current->all_sets; runp != NULL;
			   runp = runp->next)
			{
			  if (strcmp (runp->symbol, symbol) == 0)
			    {
			      runp->deleted = 1;
			      break;
			    }
			}
		      if (runp == NULL)
			/* Name does not exist before.  */
			error_at_line (0, 0, fname, start_line,
				       gettext ("unknown set `%s'"), symbol);
		    }
		}
	    }
	  else if (strncmp (&this_line[1], "quote", 5) == 0)
	    {
	      char buf[2];
	      char *bufptr;
	      size_t buflen;
	      char *wbufptr;
	      size_t wbuflen;
	      int cnt;

	      cnt = sizeof ("quote");
	      while (isspace (this_line[cnt]))
		++cnt;

	      /* We need the conversion.  */
	      if (cd_towc == (iconv_t) -1
		  && open_conversion (codeset, &cd_towc, &cd_tomb,
				      &escape_char) != 0)
		/* Something is wrong.  */
		goto out;

	      /* Yes, the quote char can be '\0'; this means no quote
		 char.  The function using the information works on
		 wide characters so we have to convert it here.  */
	      buf[0] = this_line[cnt];
	      buf[1] = '\0';
	      bufptr = buf;
	      buflen = 2;

	      wbufptr = (char *) wbuf;
	      wbuflen = wbufsize;

	      /* Flush the state.  */
	      iconv (cd_towc, NULL, NULL, NULL, NULL);

	      iconv (cd_towc, &bufptr, &buflen, &wbufptr, &wbuflen);
	      if (buflen != 0 || (wchar_t *) wbufptr != &wbuf[2])
		error_at_line (0, 0, fname, start_line,
			       gettext ("invalid quote character"));
	      else
		/* Use the converted wide character.  */
		current->quote_char = wbuf[0];
	    }
	  else
	    {
	      int cnt;
	      cnt = 2;
	      while (this_line[cnt] != '\0' && !isspace (this_line[cnt]))
		++cnt;
	      this_line[cnt] = '\0';
	      error_at_line (0, 0, fname, start_line,
			     gettext ("unknown directive `%s': line ignored"),
			     &this_line[1]);
	    }
	}
      else if (isalnum (this_line[0]) || this_line[0] == '_')
	{
	  const char *ident = this_line;
	  char *line = this_line;
	  int message_number;

	  do
	    ++line;
	  while (line[0] != '\0' && !isspace (line[0]));
	  if (line[0] != '\0')
	    *line++ = '\0';	/* Terminate the identifier.  */

	  /* Now we found the beginning of the message itself.  */

	  if (isdigit (ident[0]))
	    {
	      struct message_list *runp;
	      struct message_list *lastp;

	      message_number = atoi (ident);

	      /* Find location to insert the new message.  */
	      runp = current->current_set->messages;
	      lastp = NULL;
	      while (runp != NULL)
		if (runp->number == message_number)
		  break;
		else
		  {
		    lastp = runp;
		    runp = runp->next;
		  }
	      if (runp != NULL)
		{
		  /* Oh, oh.  There is already a message with this
		     number in the message set.  */
		  if (runp->symbol == NULL)
		    {
		      /* The existing message had its number specified
			 by the user.  Fatal collision type uh, oh.  */
		      error_at_line (0, 0, fname, start_line,
				     gettext ("duplicated message number"));
		      error_at_line (0, 0, runp->fname, runp->line,
				     gettext ("this is the first definition"));
		      message_number = 0;
		    }
		  else
		    {
		      /* Collision was with number auto-assigned to a
			 symbolic.  Change existing symbolic number
			 and move to end the list (if not already there).  */
		      runp->number = ++current->current_set->last_message;

		      if (runp->next != NULL)
			{
			  struct message_list *endp;

			  if (lastp == NULL)
			    current->current_set->messages=runp->next;
			  else
			    lastp->next=runp->next;

			  endp = runp->next;
			  while (endp->next != NULL)
			    endp = endp->next;

			  endp->next = runp;
			  runp->next = NULL;
			}
		    }
		}
	      ident = NULL;	/* We don't have a symbol.  */

	      if (message_number != 0
		  && message_number > current->current_set->last_message)
		current->current_set->last_message = message_number;
	    }
	  else if (ident[0] != '\0')
	    {
	      struct message_list *runp;

	      /* Test whether the symbolic name was not used for
		 another message in this message set.  */
	      runp = current->current_set->messages;
	      while (runp != NULL)
		if (runp->symbol != NULL && strcmp (ident, runp->symbol) == 0)
		  break;
		else
		  runp = runp->next;
	      if (runp != NULL)
		{
		  /* The name is already used.  */
		  error_at_line (0, 0, fname, start_line, gettext ("\
duplicated message identifier"));
		  error_at_line (0, 0, runp->fname, runp->line,
				 gettext ("this is the first definition"));
		  message_number = 0;
		}
	      else
		/* Give the message the next unused number.  */
		message_number = ++current->current_set->last_message;
	    }
	  else
	    message_number = 0;

	  if (message_number != 0)
	    {
	      char *inbuf;
	      size_t inlen;
	      char *outbuf;
	      size_t outlen;
	      struct message_list *newp;
	      size_t line_len = strlen (line) + 1;
	      size_t ident_len = 0;

	      /* We need the conversion.  */
	      if (cd_towc == (iconv_t) -1
		  && open_conversion (codeset, &cd_towc, &cd_tomb,
				      &escape_char) != 0)
		/* Something is wrong.  */
		goto out;

	      /* Convert to a wide character string.  We have to
		 interpret escape sequences which will be impossible
		 without doing the conversion if the codeset of the
		 message is stateful.  */
	      while (1)
		{
		  inbuf = line;
		  inlen = line_len;
		  outbuf = (char *) wbuf;
		  outlen = wbufsize;

		  /* Flush the state.  */
		  iconv (cd_towc, NULL, NULL, NULL, NULL);

		  iconv (cd_towc, &inbuf, &inlen, &outbuf, &outlen);
		  if (inlen == 0)
		    {
		      /* The string is converted.  */
		      assert (outlen < wbufsize);
		      assert (wbuf[(wbufsize - outlen) / sizeof (wchar_t) - 1]
			      == L'\0');
		      break;
		    }

		  if (outlen != 0)
		    {
		      /* Something is wrong with this string, we ignore it.  */
		      error_at_line (0, 0, fname, start_line, gettext ("\
invalid character: message ignored"));
		      goto ignore;
		    }

		  /* The output buffer is too small.  */
		  wbufsize *= 2;
		  wbuf = (wchar_t *) xrealloc (wbuf, wbufsize);
		}

	      /* Strip quote characters, change escape sequences into
		 correct characters etc.  */
	      normalize_line (fname, start_line, cd_towc, wbuf,
			      current->quote_char, escape_char);

	      if (ident)
		ident_len = line - this_line;

	      /* Now the string is free of escape sequences.  Convert it
		 back into a multibyte character string.  First free the
		 memory allocated for the original string.  */
	      obstack_free (&current->mem_pool, this_line);

	      used = 1;	/* Yes, we use the line.  */

	      /* Now fill in the new string.  It should never happen that
		 the replaced string is longer than the original.  */
	      inbuf = (char *) wbuf;
	      inlen = (wcslen (wbuf) + 1) * sizeof (wchar_t);

	      outlen = obstack_room (&current->mem_pool);
	      obstack_blank (&current->mem_pool, outlen);
	      this_line = (char *) obstack_base (&current->mem_pool);
	      outbuf = this_line + ident_len;
	      outlen -= ident_len;

	      /* Flush the state.  */
	      iconv (cd_tomb, NULL, NULL, NULL, NULL);

	      iconv (cd_tomb, &inbuf, &inlen, &outbuf, &outlen);
	      if (inlen != 0)
		{
		  error_at_line (0, 0, fname, start_line,
				 gettext ("invalid line"));
		  goto ignore;
		}
	      assert (outbuf[-1] == '\0');

	      /* Free the memory in the obstack we don't use.  */
	      obstack_blank (&current->mem_pool, -(int) outlen);
	      line = obstack_finish (&current->mem_pool);

	      newp = (struct message_list *) xmalloc (sizeof (*newp));
	      newp->number = message_number;
	      newp->message = line + ident_len;
	      /* Remember symbolic name; is NULL if no is given.  */
	      newp->symbol = ident ? line : NULL;
	      /* Remember where we found the character.  */
	      newp->fname = fname;
	      newp->line = start_line;

	      /* Find place to insert to message.  We keep them in a
		 sorted single linked list.  */
	      if (current->current_set->messages == NULL
		  || current->current_set->messages->number > message_number)
		{
		  newp->next = current->current_set->messages;
		  current->current_set->messages = newp;
		}
	      else
		{
		  struct message_list *runp;
		  runp = current->current_set->messages;
		  while (runp->next != NULL)
		    if (runp->next->number > message_number)
		      break;
		    else
		      runp = runp->next;
		  newp->next = runp->next;
		  runp->next = newp;
		}
	    }
	  ++current->total_messages;
	}
      else
	{
	  size_t cnt;

	  cnt = 0;
	  /* See whether we have any non-white space character in this
	     line.  */
	  while (this_line[cnt] != '\0' && isspace (this_line[cnt]))
	    ++cnt;

	  if (this_line[cnt] != '\0')
	    /* Yes, some unknown characters found.  */
	    error_at_line (0, 0, fname, start_line,
			   gettext ("malformed line ignored"));
	}

    ignore:
      /* We can save the memory for the line if it was not used.  */
      if (!used)
	obstack_free (&current->mem_pool, this_line);
    }

  /* Close the conversion modules.  */
  iconv_close (cd_towc);
  iconv_close (cd_tomb);
  free (codeset);

 out:
  free (wbuf);

  if (fp != stdin)
    fclose (fp);
  return current;
}


static void
write_out (struct catalog *catalog, const char *output_name,
	   const char *header_name)
{
  /* Computing the "optimal" size.  */
  struct set_list *set_run;
  size_t best_total, best_size, best_depth;
  size_t act_size, act_depth;
  struct catalog_obj obj;
  struct obstack string_pool;
  const char *strings;
  size_t strings_size;
  uint32_t *array1, *array2;
  size_t cnt;
  int fd;

  /* If not otherwise told try to read file with existing
     translations.  */
  if (!force_new)
    read_old (catalog, output_name);

  /* Initialize best_size with a very high value.  */
  best_total = best_size = best_depth = UINT_MAX;

  /* We need some start size for testing.  Let's start with
     TOTAL_MESSAGES / 5, which theoretically provides a mean depth of
     5.  */
  act_size = 1 + catalog->total_messages / 5;

  /* We determine the size of a hash table here.  Because the message
     numbers can be chosen arbitrary by the programmer we cannot use
     the simple method of accessing the array using the message
     number.  The algorithm is based on the trivial hash function
     NUMBER % TABLE_SIZE, where collisions are stored in a second
     dimension up to TABLE_DEPTH.  We here compute TABLE_SIZE so that
     the needed space (= TABLE_SIZE * TABLE_DEPTH) is minimal.  */
  while (act_size <= best_total)
    {
      size_t deep[act_size];

      act_depth = 1;
      memset (deep, '\0', act_size * sizeof (size_t));
      set_run = catalog->all_sets;
      while (set_run != NULL)
	{
	  struct message_list *message_run;

	  message_run = set_run->messages;
	  while (message_run != NULL)
	    {
	      size_t idx = (message_run->number * set_run->number) % act_size;

	      ++deep[idx];
	      if (deep[idx] > act_depth)
		{
		  act_depth = deep[idx];
		  if (act_depth * act_size > best_total)
		    break;
		}
	      message_run = message_run->next;
	    }
	  set_run = set_run->next;
	}

      if (act_depth * act_size <= best_total)
	{
	  /* We have found a better solution.  */
	  best_total = act_depth * act_size;
	  best_size = act_size;
	  best_depth = act_depth;
	}

      ++act_size;
    }

  /* let's be prepared for an empty message file.  */
  if (best_size == UINT_MAX)
    {
      best_size = 1;
      best_depth = 1;
    }

  /* OK, now we have the size we will use.  Fill in the header, build
     the table and the second one with swapped byte order.  */
  obj.magic = CATGETS_MAGIC;
  obj.plane_size = best_size;
  obj.plane_depth = best_depth;

  /* Allocate room for all needed arrays.  */
  array1 =
    (uint32_t *) alloca (best_size * best_depth * sizeof (uint32_t) * 3);
  memset (array1, '\0', best_size * best_depth * sizeof (uint32_t) * 3);
  array2
    = (uint32_t *) alloca (best_size * best_depth * sizeof (uint32_t) * 3);
  obstack_init (&string_pool);

  set_run = catalog->all_sets;
  while (set_run != NULL)
    {
      struct message_list *message_run;

      message_run = set_run->messages;
      while (message_run != NULL)
	{
	  size_t idx = (((message_run->number * set_run->number) % best_size)
			* 3);
	  /* Determine collision depth.  */
	  while (array1[idx] != 0)
	    idx += best_size * 3;

	  /* Store set number, message number and pointer into string
	     space, relative to the first string.  */
	  array1[idx + 0] = set_run->number;
	  array1[idx + 1] = message_run->number;
	  array1[idx + 2] = obstack_object_size (&string_pool);

	  /* Add current string to the continuous space containing all
	     strings.  */
	  obstack_grow0 (&string_pool, message_run->message,
			 strlen (message_run->message));

	  message_run = message_run->next;
	}

      set_run = set_run->next;
    }
  strings_size = obstack_object_size (&string_pool);
  strings = obstack_finish (&string_pool);

  /* Compute ARRAY2 by changing the byte order.  */
  for (cnt = 0; cnt < best_size * best_depth * 3; ++cnt)
    array2[cnt] = SWAPU32 (array1[cnt]);

  /* Now we can write out the whole data.  */
  if (strcmp (output_name, "-") == 0
      || strcmp (output_name, "/dev/stdout") == 0)
    fd = STDOUT_FILENO;
  else
    {
      fd = creat (output_name, 0666);
      if (fd < 0)
	error (EXIT_FAILURE, errno, gettext ("cannot open output file `%s'"),
	       output_name);
    }

  /* Write out header.  */
  write (fd, &obj, sizeof (obj));

  /* We always write out the little endian version of the index
     arrays.  */
#if __BYTE_ORDER == __LITTLE_ENDIAN
  write (fd, array1, best_size * best_depth * sizeof (uint32_t) * 3);
  write (fd, array2, best_size * best_depth * sizeof (uint32_t) * 3);
#elif __BYTE_ORDER == __BIG_ENDIAN
  write (fd, array2, best_size * best_depth * sizeof (uint32_t) * 3);
  write (fd, array1, best_size * best_depth * sizeof (uint32_t) * 3);
#else
# error Cannot handle __BYTE_ORDER byte order
#endif

  /* Finally write the strings.  */
  write (fd, strings, strings_size);

  if (fd != STDOUT_FILENO)
    close (fd);

  /* If requested now write out the header file.  */
  if (header_name != NULL)
    {
      int first = 1;
      FILE *fp;

      /* Open output file.  "-" or "/dev/stdout" means write to
	 standard output.  */
      if (strcmp (header_name, "-") == 0
	  || strcmp (header_name, "/dev/stdout") == 0)
	fp = stdout;
      else
	{
	  fp = fopen (header_name, "w");
	  if (fp == NULL)
	    error (EXIT_FAILURE, errno,
		   gettext ("cannot open output file `%s'"), header_name);
	}

      /* Iterate over all sets and all messages.  */
      set_run = catalog->all_sets;
      while (set_run != NULL)
	{
	  struct message_list *message_run;

	  /* If the current message set has a symbolic name write this
	     out first.  */
	  if (set_run->symbol != NULL)
	    fprintf (fp, "%s#define %sSet %#x\t/* %s:%Zu */\n",
		     first ? "" : "\n", set_run->symbol, set_run->number - 1,
		     set_run->fname, set_run->line);
	  first = 0;

	  message_run = set_run->messages;
	  while (message_run != NULL)
	    {
	      /* If the current message has a symbolic name write
		 #define out.  But we have to take care for the set
		 not having a symbolic name.  */
	      if (message_run->symbol != NULL)
		{
		  if (set_run->symbol == NULL)
		    fprintf (fp, "#define AutomaticSet%d%s %#x\t/* %s:%Zu */\n",
			     set_run->number, message_run->symbol,
			     message_run->number, message_run->fname,
			     message_run->line);
		  else
		    fprintf (fp, "#define %s%s %#x\t/* %s:%Zu */\n",
			     set_run->symbol, message_run->symbol,
			     message_run->number, message_run->fname,
			     message_run->line);
		}

	      message_run = message_run->next;
	    }

	  set_run = set_run->next;
	}

      if (fp != stdout)
	fclose (fp);
    }
}


static struct set_list *
find_set (struct catalog *current, int number)
{
  struct set_list *result = current->all_sets;

  /* We must avoid set number 0 because a set of this number signals
     in the tables that the entry is not occupied.  */
  ++number;

  while (result != NULL)
    if (result->number == number)
      return result;
    else
      result = result->next;

  /* Prepare new message set.  */
  result = (struct set_list *) xcalloc (1, sizeof (*result));
  result->number = number;
  result->next = current->all_sets;
  current->all_sets = result;

  return result;
}


/* Normalize given string *in*place* by processing escape sequences
   and quote characters.  */
static void
normalize_line (const char *fname, size_t line, iconv_t cd, wchar_t *string,
		wchar_t quote_char, wchar_t escape_char)
{
  int is_quoted;
  wchar_t *rp = string;
  wchar_t *wp = string;

  if (quote_char != L'\0' && *rp == quote_char)
    {
      is_quoted = 1;
      ++rp;
    }
  else
    is_quoted = 0;

  while (*rp != L'\0')
    if (*rp == quote_char)
      /* We simply end the string when we find the first time an
	 not-escaped quote character.  */
	break;
    else if (*rp == escape_char)
      {
	++rp;
	if (quote_char != L'\0' && *rp == quote_char)
	  /* This is an extension to XPG.  */
	  *wp++ = *rp++;
	else
	  /* Recognize escape sequences.  */
	  switch (*rp)
	    {
	    case L'n':
	      *wp++ = L'\n';
	      ++rp;
	      break;
	    case L't':
	      *wp++ = L'\t';
	      ++rp;
	      break;
	    case L'v':
	      *wp++ = L'\v';
	      ++rp;
	      break;
	    case L'b':
	      *wp++ = L'\b';
	      ++rp;
	      break;
	    case L'r':
	      *wp++ = L'\r';
	      ++rp;
	      break;
	    case L'f':
	      *wp++ = L'\f';
	      ++rp;
	      break;
	    case L'0' ... L'7':
	      {
		int number;
		char cbuf[2];
		char *cbufptr;
		size_t cbufin;
		wchar_t wcbuf[2];
		char *wcbufptr;
		size_t wcbufin;

		number = *rp++ - L'0';
		while (number <= (255 / 8) && *rp >= L'0' && *rp <= L'7')
		  {
		    number *= 8;
		    number += *rp++ - L'0';
		  }

		cbuf[0] = (char) number;
		cbuf[1] = '\0';
		cbufptr = cbuf;
		cbufin = 2;

		wcbufptr = (char *) wcbuf;
		wcbufin = sizeof (wcbuf);

		/* Flush the state.  */
		iconv (cd, NULL, NULL, NULL, NULL);

		iconv (cd, &cbufptr, &cbufin, &wcbufptr, &wcbufin);
		if (cbufptr != &cbuf[2] || (wchar_t *) wcbufptr != &wcbuf[2])
		  error_at_line (0, 0, fname, line,
				 gettext ("invalid escape sequence"));
		else
		  *wp++ = wcbuf[0];
	      }
	      break;
	    default:
	      if (*rp == escape_char)
		{
		  *wp++ = escape_char;
		  ++rp;
		}
	      else
		/* Simply ignore the backslash character.  */;
	      break;
	    }
      }
    else
      *wp++ = *rp++;

  /* If we saw a quote character at the beginning we expect another
     one at the end.  */
  if (is_quoted && *rp != quote_char)
    error_at_line (0, 0, fname, line, gettext ("unterminated message"));

  /* Terminate string.  */
  *wp = L'\0';
  return;
}


static void
read_old (struct catalog *catalog, const char *file_name)
{
  struct catalog_info old_cat_obj;
  struct set_list *set = NULL;
  int last_set = -1;
  size_t cnt;

  /* Try to open catalog, but don't look through the NLSPATH.  */
  if (__open_catalog (file_name, NULL, NULL, &old_cat_obj) != 0)
    {
      if (errno == ENOENT)
	/* No problem, the catalog simply does not exist.  */
	return;
      else
	error (EXIT_FAILURE, errno,
	       gettext ("while opening old catalog file"));
    }

  /* OK, we have the catalog loaded.  Now read all messages and merge
     them.  When set and message number clash for any message the new
     one is used.  If the new one is empty it indicates that the
     message should be deleted.  */
  for (cnt = 0; cnt < old_cat_obj.plane_size * old_cat_obj.plane_depth; ++cnt)
    {
      struct message_list *message, *last;

      if (old_cat_obj.name_ptr[cnt * 3 + 0] == 0)
	/* No message in this slot.  */
	continue;

      if (old_cat_obj.name_ptr[cnt * 3 + 0] - 1 != (uint32_t) last_set)
	{
	  last_set = old_cat_obj.name_ptr[cnt * 3 + 0] - 1;
	  set = find_set (catalog, old_cat_obj.name_ptr[cnt * 3 + 0] - 1);
	}

      last = NULL;
      message = set->messages;
      while (message != NULL)
	{
	  if ((uint32_t) message->number >= old_cat_obj.name_ptr[cnt * 3 + 1])
	    break;
	  last = message;
	  message = message->next;
	}

      if (message == NULL
	  || (uint32_t) message->number > old_cat_obj.name_ptr[cnt * 3 + 1])
	{
	  /* We have found a message which is not yet in the catalog.
	     Insert it at the right position.  */
	  struct message_list *newp;

	  newp = (struct message_list *) xmalloc (sizeof(*newp));
	  newp->number = old_cat_obj.name_ptr[cnt * 3 + 1];
	  newp->message =
	    &old_cat_obj.strings[old_cat_obj.name_ptr[cnt * 3 + 2]];
	  newp->fname = NULL;
	  newp->line = 0;
	  newp->symbol = NULL;
	  newp->next = message;

	  if (last == NULL)
	    set->messages = newp;
	  else
	    last->next = newp;

	  ++catalog->total_messages;
	}
      else if (*message->message == '\0')
	{
	  /* The new empty message has overridden the old one thus
	     "deleting" it as required.  Now remove the empty remains. */
	  if (last == NULL)
	    set->messages = message->next;
	  else
	    last->next = message->next;
	}
    }
}


static int
open_conversion (const char *codeset, iconv_t *cd_towcp, iconv_t *cd_tombp,
		 wchar_t *escape_charp)
{
  char buf[2];
  char *bufptr;
  size_t bufsize;
  wchar_t wbuf[2];
  char *wbufptr;
  size_t wbufsize;

  /* If the input file does not specify the codeset use the locale's.  */
  if (codeset == NULL)
    {
      setlocale (LC_ALL, "");
      codeset = nl_langinfo (CODESET);
      setlocale (LC_ALL, "C");
    }

  /* Get the conversion modules.  */
  *cd_towcp = iconv_open ("WCHAR_T", codeset);
  *cd_tombp = iconv_open (codeset, "WCHAR_T");
  if (*cd_towcp == (iconv_t) -1 || *cd_tombp == (iconv_t) -1)
    {
      error (0, 0, gettext ("conversion modules not available"));
      if (*cd_towcp != (iconv_t) -1)
	iconv_close (*cd_towcp);

      return 1;
    }

  /* One special case for historical reasons is the backslash
     character.  In some codesets the byte value 0x5c is not mapped to
     U005c in Unicode.  These charsets then don't have a backslash
     character at all.  Therefore we have to live with whatever the
     codeset provides and recognize, instead of the U005c, the character
     the byte value 0x5c is mapped to.  */
  buf[0] = '\\';
  buf[1] = '\0';
  bufptr = buf;
  bufsize = 2;

  wbufptr = (char *) wbuf;
  wbufsize = sizeof (wbuf);

  iconv (*cd_towcp, &bufptr, &bufsize, &wbufptr, &wbufsize);
  if (bufsize != 0 || wbufsize != 0)
    {
      /* Something went wrong, we couldn't convert the byte 0x5c.  Go
	 on with using U005c.  */
      error (0, 0, gettext ("cannot determine escape character"));
      *escape_charp = L'\\';
    }
  else
    *escape_charp = wbuf[0];

  return 0;
}