summaryrefslogtreecommitdiff
path: root/locale/programs/localedef.c
blob: a1823acafaa39750cce0e4b7812a1bbd0ab5ecf1 (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
/* Copyright (C) 1995-2007, 2008 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1995.

   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, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

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

#include <argp.h>
#include <errno.h>
#include <fcntl.h>
#include <libintl.h>
#include <locale.h>
#include <mcheck.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <error.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include "localedef.h"
#include "charmap.h"
#include "locfile.h"

/* Undefine the following line in the production version.  */
/* #define NDEBUG 1 */
#include <assert.h>


/* List of copied locales.  */
struct copy_def_list_t *copy_list;

/* If this is defined be POSIX conform.  */
int posix_conformance;

/* If not zero give a lot more messages.  */
int verbose;

/* If not zero suppress warnings and information messages.  */
int be_quiet;

/* If not zero, produce old-style hash table instead of 3-level access
   tables.  */
int oldstyle_tables;

/* If not zero force output even if warning were issued.  */
static int force_output;

/* Prefix for output files.  */
const char *output_prefix;

/* Name of the character map file.  */
static const char *charmap_file;

/* Name of the locale definition file.  */
static const char *input_file;

/* Name of the repertoire map file.  */
const char *repertoire_global;

/* Name of the locale.alias file.  */
const char *alias_file;

/* List of all locales.  */
static struct localedef_t *locales;

/* If true don't add locale data to archive.  */
bool no_archive;

/* If true add named locales to archive.  */
static bool add_to_archive;

/* If true delete named locales from archive.  */
static bool delete_from_archive;

/* If true replace archive content when adding.  */
static bool replace_archive;

/* If true list archive content.  */
static bool list_archive;

/* Maximum number of retries when opening the locale archive.  */
int max_locarchive_open_retry = 10;


/* 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_POSIX 301
#define OPT_QUIET 302
#define OPT_OLDSTYLE 303
#define OPT_PREFIX 304
#define OPT_NO_ARCHIVE 305
#define OPT_ADD_TO_ARCHIVE 306
#define OPT_REPLACE 307
#define OPT_DELETE_FROM_ARCHIVE 308
#define OPT_LIST_ARCHIVE 309

/* Definitions of arguments for argp functions.  */
static const struct argp_option options[] =
{
  { NULL, 0, NULL, 0, N_("Input Files:") },
  { "charmap", 'f', "FILE", 0,
    N_("Symbolic character names defined in FILE") },
  { "inputfile", 'i', "FILE", 0, N_("Source definitions are found in FILE") },
  { "repertoire-map", 'u', "FILE", 0,
    N_("FILE contains mapping from symbolic names to UCS4 values") },

  { NULL, 0, NULL, 0, N_("Output control:") },
  { "force", 'c', NULL, 0,
    N_("Create output even if warning messages were issued") },
  { "old-style", OPT_OLDSTYLE, NULL, 0, N_("Create old-style tables") },
  { "prefix", OPT_PREFIX, "PATH", 0, N_("Optional output file prefix") },
  { "posix", OPT_POSIX, NULL, 0, N_("Be strictly POSIX conform") },
  { "quiet", OPT_QUIET, NULL, 0,
    N_("Suppress warnings and information messages") },
  { "verbose", 'v', NULL, 0, N_("Print more messages") },
  { NULL, 0, NULL, 0, N_("Archive control:") },
  { "no-archive", OPT_NO_ARCHIVE, NULL, 0,
    N_("Don't add new data to archive") },
  { "add-to-archive", OPT_ADD_TO_ARCHIVE, NULL, 0,
    N_("Add locales named by parameters to archive") },
  { "replace", OPT_REPLACE, NULL, 0, N_("Replace existing archive content") },
  { "delete-from-archive", OPT_DELETE_FROM_ARCHIVE, NULL, 0,
    N_("Remove locales named by parameters from archive") },
  { "list-archive", OPT_LIST_ARCHIVE, NULL, 0, N_("List content of archive") },
  { "alias-file", 'A', "FILE", 0,
    N_("locale.alias file to consult when making archive")},
  { NULL, 0, NULL, 0, NULL }
};

/* Short description of program.  */
static const char doc[] = N_("Compile locale specification");

/* Strings for arguments in help texts.  */
static const char args_doc[] = N_("\
NAME\n\
[--add-to-archive|--delete-from-archive] FILE...\n\
--list-archive [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
};


/* Prototypes for global functions.  */
extern void *xmalloc (size_t __n);

/* Prototypes for local functions.  */
static void error_print (void);
static const char *construct_output_path (char *path);
static const char *normalize_codeset (const char *codeset, size_t name_len);


int
main (int argc, char *argv[])
{
  const char *output_path;
  int cannot_write_why;
  struct charmap_t *charmap;
  struct localedef_t global;
  int remaining;

  /* Set initial values for global variables.  */
  copy_list = NULL;
  posix_conformance = getenv ("POSIXLY_CORRECT") != NULL;
  error_print_progname = error_print;

  /* Set locale.  Do not set LC_ALL because the other categories must
     not be affected (according to POSIX.2).  */
  setlocale (LC_MESSAGES, "");
  setlocale (LC_CTYPE, "");

  /* Initialize the message catalog.  */
  textdomain (_libc_intl_domainname);

  /* Parse and process arguments.  */
  argp_err_exit_status = 4;
  argp_parse (&argp, argc, argv, 0, &remaining, NULL);

  /* Handle a few special cases.  */
  if (list_archive)
    show_archive_content (verbose);
  if (add_to_archive)
    return add_locales_to_archive (argc - remaining, &argv[remaining],
				   replace_archive);
  if (delete_from_archive)
    return delete_locales_from_archive (argc - remaining, &argv[remaining]);

  /* POSIX.2 requires to be verbose about missing characters in the
     character map.  */
  verbose |= posix_conformance;

  if (argc - remaining != 1)
    {
      /* We need exactly one non-option parameter.  */
      argp_help (&argp, stdout, ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR,
		 program_invocation_short_name);
      exit (4);
    }

  /* The parameter describes the output path of the constructed files.
     If the described files cannot be written return a NULL pointer.  */
  output_path  = construct_output_path (argv[remaining]);
  if (output_path == NULL && ! no_archive)
    error (4, errno, _("cannot create directory for output files"));
  cannot_write_why = errno;

  /* Now that the parameters are processed we have to reset the local
     ctype locale.  (P1003.2 4.35.5.2)  */
  setlocale (LC_CTYPE, "POSIX");

  /* Look whether the system really allows locale definitions.  POSIX
     defines error code 3 for this situation so I think it must be
     a fatal error (see P1003.2 4.35.8).  */
  if (sysconf (_SC_2_LOCALEDEF) < 0)
    WITH_CUR_LOCALE (error (3, 0, _("\
FATAL: system does not define `_POSIX2_LOCALEDEF'")));

  /* Process charmap file.  */
  charmap = charmap_read (charmap_file, verbose, 1, be_quiet, 1);

  /* Add the first entry in the locale list.  */
  memset (&global, '\0', sizeof (struct localedef_t));
  global.name = input_file ?: "/dev/stdin";
  global.needed = ALL_LOCALES;
  locales = &global;

  /* Now read the locale file.  */
  if (locfile_read (&global, charmap) != 0)
    WITH_CUR_LOCALE (error (4, errno, _("\
cannot open locale definition file `%s'"), input_file));

  /* Perhaps we saw some `copy' instructions.  */
  while (1)
    {
      struct localedef_t *runp = locales;

      while (runp != NULL && (runp->needed & runp->avail) == runp->needed)
	runp = runp->next;

      if (runp == NULL)
	/* Everything read.  */
	break;

      if (locfile_read (runp, charmap) != 0)
	WITH_CUR_LOCALE (error (4, errno, _("\
cannot open locale definition file `%s'"), runp->name));
    }

  /* Check the categories we processed in source form.  */
  check_all_categories (locales, charmap);

  /* We are now able to write the data files.  If warning were given we
     do it only if it is explicitly requested (--force).  */
  if (error_message_count == 0 || force_output != 0)
    {
      if (cannot_write_why != 0)
	WITH_CUR_LOCALE (error (4, cannot_write_why, _("\
cannot write output files to `%s'"), output_path));
      else
	write_all_categories (locales, charmap, argv[remaining], output_path);
    }
  else
    WITH_CUR_LOCALE (error (4, 0, _("\
no output file produced because warnings were issued")));

  /* This exit status is prescribed by POSIX.2 4.35.7.  */
  exit (error_message_count != 0);
}


/* Handle program arguments.  */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)
{
  switch (key)
    {
    case OPT_QUIET:
      be_quiet = 1;
      break;
    case OPT_POSIX:
      posix_conformance = 1;
      break;
    case OPT_OLDSTYLE:
      oldstyle_tables = 1;
      break;
    case OPT_PREFIX:
      output_prefix = arg;
      break;
    case OPT_NO_ARCHIVE:
      no_archive = true;
      break;
    case OPT_ADD_TO_ARCHIVE:
      add_to_archive = true;
      break;
    case OPT_REPLACE:
      replace_archive = true;
      break;
    case OPT_DELETE_FROM_ARCHIVE:
      delete_from_archive = true;
      break;
    case OPT_LIST_ARCHIVE:
      list_archive = true;
      break;
    case 'c':
      force_output = 1;
      break;
    case 'f':
      charmap_file = arg;
      break;
    case 'A':
      alias_file = arg;
      break;
    case 'i':
      input_file = arg;
      break;
    case 'u':
      repertoire_global = arg;
      break;
    case 'v':
      verbose = 1;
      break;
    default:
      return ARGP_ERR_UNKNOWN;
    }
  return 0;
}


static char *
more_help (int key, const char *text, void *input)
{
  char *cp;

  switch (key)
    {
    case ARGP_KEY_HELP_EXTRA:
      /* We print some extra information.  */
      if (asprintf (&cp, gettext ("\
System's directory for character maps : %s\n\
                       repertoire maps: %s\n\
                       locale path    : %s\n\
%s"),
		    CHARMAP_PATH, REPERTOIREMAP_PATH, LOCALE_PATH, gettext ("\
For bug reporting instructions, please see:\n\
<http://www.gnu.org/software/libc/bugs.html>.\n")) < 0)
	return NULL;
      return cp;
    default:
      break;
    }
  return (char *) text;
}

/* Print the version information.  */
static void
print_version (FILE *stream, struct argp_state *state)
{
  fprintf (stream, "localedef (GNU %s) %s\n", PACKAGE, 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\
"), "2008");
  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)
{
}


/* The parameter to localedef describes the output path.  If it does
   contain a '/' character it is a relative path.  Otherwise it names the
   locale this definition is for.  */
static const char *
construct_output_path (char *path)
{
  const char *normal = NULL;
  char *result;
  char *endp;

  if (strchr (path, '/') == NULL)
    {
      /* This is a system path.  First examine whether the locale name
	 contains a reference to the codeset.  This should be
	 normalized.  */
      char *startp;
      size_t n;

      startp = path;
      /* We must be prepared for finding a CEN name or a location of
	 the introducing `.' where it is not possible anymore.  */
      while (*startp != '\0' && *startp != '@' && *startp != '.')
	++startp;
      if (*startp == '.')
	{
	  /* We found a codeset specification.  Now find the end.  */
	  endp = ++startp;
	  while (*endp != '\0' && *endp != '@')
	    ++endp;

	  if (endp > startp)
	    normal = normalize_codeset (startp, endp - startp);
	}
      else
	/* This is to keep gcc quiet.  */
	endp = NULL;

      /* We put an additional '\0' at the end of the string because at
	 the end of the function we need another byte for the trailing
	 '/'.  */
      if (normal == NULL)
	n = asprintf (&result, "%s%s/%s%c",
		      output_prefix ?: "", LOCALEDIR, path, '\0');
      else
	n = asprintf (&result, "%s%s/%.*s%s%s%c",
		      output_prefix ?: "", LOCALEDIR,
		      (int) (startp - path), path, normal, endp, '\0');

      if (n < 0)
	return NULL;

      endp = result + n - 1;
    }
  else
    {
      /* This is a user path.  Please note the additional byte in the
	 memory allocation.  */
      size_t len = strlen (path) + 1;
      result = xmalloc (len + 1);
      endp = mempcpy (result, path, len) - 1;

      /* If the user specified an output path we cannot add the output
	 to the archive.  */
      no_archive = true;
    }

  errno = 0;

  if (no_archive && euidaccess (result, W_OK) == -1)
    /* Perhaps the directory does not exist now.  Try to create it.  */
    if (errno == ENOENT)
      {
	errno = 0;
	if (mkdir (result, 0777) < 0)
	  return NULL;
      }

  *endp++ = '/';
  *endp = '\0';

  return result;
}


/* Normalize codeset name.  There is no standard for the codeset
   names.  Normalization allows the user to use any of the common
   names.  */
static const char *
normalize_codeset (codeset, name_len)
     const char *codeset;
     size_t name_len;
{
  int len = 0;
  int only_digit = 1;
  char *retval;
  char *wp;
  size_t cnt;

  for (cnt = 0; cnt < name_len; ++cnt)
    if (isalnum (codeset[cnt]))
      {
	++len;

	if (isalpha (codeset[cnt]))
	  only_digit = 0;
      }

  retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);

  if (retval != NULL)
    {
      if (only_digit)
	wp = stpcpy (retval, "iso");
      else
	wp = retval;

      for (cnt = 0; cnt < name_len; ++cnt)
	if (isalpha (codeset[cnt]))
	  *wp++ = tolower (codeset[cnt]);
	else if (isdigit (codeset[cnt]))
	  *wp++ = codeset[cnt];

      *wp = '\0';
    }

  return (const char *) retval;
}


struct localedef_t *
add_to_readlist (int category, const char *name, const char *repertoire_name,
		 int generate, struct localedef_t *copy_locale)
{
  struct localedef_t *runp = locales;

  while (runp != NULL && strcmp (name, runp->name) != 0)
    runp = runp->next;

  if (runp == NULL)
    {
      /* Add a new entry at the end.  */
      struct localedef_t *newp;

      assert (generate == 1);

      newp = xcalloc (1, sizeof (struct localedef_t));
      newp->name = name;
      newp->repertoire_name = repertoire_name;

      if (locales == NULL)
	runp = locales = newp;
      else
	{
	  runp = locales;
	  while (runp->next != NULL)
	    runp = runp->next;
	  runp = runp->next = newp;
	}
    }

  if (generate
      && (runp->needed & (1 << category)) != 0
      && (runp->avail & (1 << category)) == 0)
    WITH_CUR_LOCALE (error (5, 0, _("\
circular dependencies between locale definitions")));

  if (copy_locale != NULL)
    {
      if (runp->categories[category].generic != NULL)
	WITH_CUR_LOCALE (error (5, 0, _("\
cannot add already read locale `%s' a second time"), name));
      else
	runp->categories[category].generic =
	  copy_locale->categories[category].generic;
    }

  runp->needed |= 1 << category;

  return runp;
}


struct localedef_t *
find_locale (int category, const char *name, const char *repertoire_name,
	     const struct charmap_t *charmap)
{
  struct localedef_t *result;

  /* Find the locale, but do not generate it since this would be a bug.  */
  result = add_to_readlist (category, name, repertoire_name, 0, NULL);

  assert (result != NULL);

  if ((result->avail & (1 << category)) == 0
      && locfile_read (result, charmap) != 0)
    WITH_CUR_LOCALE (error (4, errno, _("\
cannot open locale definition file `%s'"), result->name));

  return result;
}


struct localedef_t *
load_locale (int category, const char *name, const char *repertoire_name,
	     const struct charmap_t *charmap, struct localedef_t *copy_locale)
{
  struct localedef_t *result;

  /* Generate the locale if it does not exist.  */
  result = add_to_readlist (category, name, repertoire_name, 1, copy_locale);

  assert (result != NULL);

  if ((result->avail & (1 << category)) == 0
      && locfile_read (result, charmap) != 0)
    WITH_CUR_LOCALE (error (4, errno, _("\
cannot open locale definition file `%s'"), result->name));

  return result;
}

static void
turn_on_mcheck (void)
{
  /* Enable `malloc' debugging.  */
  mcheck (NULL);
  /* Use the following line for a more thorough but much slower testing.  */
  /* mcheck_pedantic (NULL); */
}

void (*__malloc_initialize_hook) (void) = turn_on_mcheck;