about summary refs log tree commit diff
path: root/locale/programs/localedef.c
blob: 580816b37e85b71544557958fa1aabdb55fc58ac (plain) (blame)
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
/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  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 <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <libintl.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include "error.h"
#include "charset.h"
#include "locfile.h"
#include "../intl/loadinfo.h"

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


/* List of locale definition files which are used in `copy' instructions.  */
struct copy_def_list_t
{
  struct copy_def_list_t *next;

  const char *name;
  int mask;

  struct localedef_t *locale;

  struct
  {
    void *data;
    size_t len;
  } binary[6];
};


/* 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;



/* Long options.  */
static const struct option long_options[] =
{
  { "charmap", required_argument, NULL, 'f' },
  { "code-set-name", required_argument, NULL, 'u' },
  { "help", no_argument, NULL, 'h' },
  { "force", no_argument, NULL, 'c' },
  { "inputfile", required_argument, NULL, 'i' },
  { "posix", no_argument, &posix_conformance, 1 },
  { "verbose", no_argument, &verbose, 1},
  { "version", no_argument, NULL, 'V' },
  { NULL, 0, NULL, 0 }
};


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

/* Prototypes for local functions.  */
static void usage (int status) __attribute__ ((noreturn));
static void error_print (void);
static const char *construct_output_path (char *path);


int
main (int argc, char *argv[])
{
  int optchar;
  int do_help = 0;
  int do_version = 0;
  int force_output = 0;
  const char *charmap_file = NULL;
  const char *input_file = NULL;
  const char *ucs_csn = NULL;
  const char *output_path;
  int cannot_write_why;
  struct charset_t *charset;
  struct localedef_t *localedef;
  struct copy_def_list_t *act_add_locdef;

  /* Set initial values for global variables.  */
  copy_list = NULL;
  posix_conformance = getenv ("POSIXLY_CORRECT") != NULL;
  error_print_progname = error_print;
  verbose = 0;

  /* 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);

  while ((optchar = getopt_long (argc, argv, "cf:hi:u:vV", long_options, NULL))
         != -1)
    switch (optchar)
      {
      case '\0':		/* Long option.  */
        break;

      case 'c':
	force_output = 1;
	break;

      case 'f':
        charmap_file = optarg;
        break;

      case 'h':
        do_help = 1;
        break;

      case 'i':
	input_file = optarg;
        break;

      case 'u':
	ucs_csn = optarg;
	break;

	case 'v':
        verbose = 1;
        break;

      case 'V':
        do_version = 1;
        break;

      default:
        usage (4);	/* A value >3 is forced by POSIX.  */
        break;
      }

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

  /* Version information is requested.  */
  if (do_version)
    {
      printf ("localedef (GNU %s) %s\n", PACKAGE, VERSION);
      printf (_("\
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\
"), "1995, 1996, 1997");
      printf (_("Written by %s.\n"), "Ulrich Drepper");

      exit (0);
    }

  /* Help is requested.  */
  if (do_help)
    /* Possible violation: POSIX.2 4.35.8 defines the return value 0 as
       "No errors occurred and the locale(s) were successfully created."
       But giving a other value than 0 does not make sense here.  It
       is perhaps not that important because POSIX does not specify the
       -h option for localedef.  */
    usage (0);

  if (argc - optind != 1)
    /* We need exactly one non-option parameter.  */
    usage (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[optind]);
  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)
    error (3, 0, _("FATAL: system does not define `_POSIX2_LOCALEDEF'"));

  /* Process charmap file.  */
  charset = charmap_read (charmap_file);

  /* Now read the locale file.  */
  localedef = locfile_read (input_file, charset);
  if (localedef->failed != 0)
    error (4, errno, _("cannot open locale definition file `%s'"), input_file);

  /* Perhaps we saw some `copy' instructions.  Process the given list.
     We use a very simple algorithm: we look up the list from the
     beginning every time.  */
  do
    {
      int cat;

      for (act_add_locdef = copy_list; act_add_locdef != NULL;
	   act_add_locdef = act_add_locdef->next)
	{
	  for (cat = LC_CTYPE; cat <= LC_MESSAGES; ++cat)
	    if ((act_add_locdef->mask & (1 << cat)) != 0)
	      {
		act_add_locdef->mask &= ~(1 << cat);
		break;
	      }
	  if (cat <= LC_MESSAGES)
	    break;
	}

      if (act_add_locdef != NULL)
	{
	  int avail = 0;

	  if (act_add_locdef->locale == NULL)
	    act_add_locdef->locale = locfile_read (act_add_locdef->name,
						   charset);

	  if (! act_add_locdef->locale->failed)
	    {
	      avail = act_add_locdef->locale->categories[cat].generic != NULL;
	      if (avail)
		localedef->categories[cat].generic
		  = act_add_locdef->locale->categories[cat].generic;
	    }

	  if (! avail)
	    {
	      const char *locale_names[] = { "LC_COLLATE", "LC_CTYPE",
					     "LC_MONETARY", "LC_NUMERIC",
					     "LC_TIME", "LC_MESSAGES" };
	      char *fname;
	      int fd;
	      struct stat st;

	      asprintf (&fname, LOCALE_PATH "/%s/%s", act_add_locdef->name,
			locale_names[cat]);
	      fd = open (fname, O_RDONLY);
	      if (fd == -1)
		{
		  free (fname);

		  asprintf (&fname, LOCALE_PATH "/%s/%s/SYS_%s",
			    act_add_locdef->name, locale_names[cat],
			    locale_names[cat]);

		  fd = open (fname, O_RDONLY);
		  if (fd == -1)
		    error (5, 0, _("\
locale file `%s', used in `copy' statement, not found"),
			   act_add_locdef->name);
		}

	      if (fstat (fd, &st) < 0)
		error (5, errno, _("\
cannot `stat' locale file `%s'"),
		       fname);

	      localedef->len[cat] = st.st_size;
	      localedef->categories[cat].generic
		= mmap (NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);

	      if (localedef->categories[cat].generic == (void *) -1)
		{
		  size_t left = st.st_size;
		  void *read_ptr;

		  localedef->categories[cat].generic
		    = xmalloc (st.st_size);
		  read_ptr = localedef->categories[cat].generic;

		  do
		    {
		      long int n;
		      n = read (fd, read_ptr, left);
		      if (n == -1)
			error (5, errno, _("cannot read locale file `%s'"),
			       fname);
		      read_ptr += n;
		      left -= n;
		    }
		  while (left > 0);
		}

	      close (fd);
	      free (fname);

	      localedef->binary |= 1 << cat;
	    }
	}
    }
  while (act_add_locdef != NULL);

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

  /* 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)
	error (4, cannot_write_why, _("cannot write output files to `%s'"),
	       output_path);
      else
	write_all_categories (localedef, charset, output_path);
    }
  else
    error (4, 0, _("no output file produced because warning were issued"));

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


void
def_to_process (const char *name, int category)
{
  struct copy_def_list_t *new, **rp;

  for (rp = &copy_list; *rp != NULL; rp = &(*rp)->next)
    if (strcmp (name, (*rp)->name) == 0)
      break;

  if (*rp == NULL)
    {
      size_t cnt;

      *rp = (struct copy_def_list_t *) xmalloc (sizeof (**rp));

      (*rp)->next = NULL;
      (*rp)->name = name;
      (*rp)->mask = 0;
      (*rp)->locale = NULL;

      for (cnt = 0; cnt < 6; ++cnt)
	{
	  (*rp)->binary[cnt].data = NULL;
	  (*rp)->binary[cnt].len = 0;
	}
    }
  new = *rp;

  if ((new->mask & category) != 0)
    /* We already have the information.  This cannot happen.  */
    error (5, 0, _("\
category data requested more than once: should not happen"));

  new->mask |= category;
}


/* Display usage information and exit.  */
static void
usage (int status)
{
  if (status != 0)
    fprintf (stderr, _("Try `%s --help' for more information.\n"),
	     program_invocation_name);
  else
    {
      printf (_("\
Usage: %s [OPTION]... name\n\
Mandatory arguments to long options are mandatory for short options too.\n\
  -c, --force               create output even if warning messages were issued\n\
  -h, --help                display this help and exit\n\
  -f, --charmap=FILE        symbolic character names defined in FILE\n\
  -i, --inputfile=FILE      source definitions are found in FILE\n\
  -u, --code-set-name=NAME  specify code set for mapping ISO 10646 elements\n\
  -v, --verbose             print more messages\n\
  -V, --version             output version information and exit\n\
      --posix               be strictly POSIX conform\n\
\n\
System's directory for character maps: %s\n\
                       locale files  : %s\n"),
	      program_invocation_name, CHARMAP_PATH, LOCALE_PATH);
      fputs (gettext ("\
Report bugs using the `glibcbug' script to <bugs@gnu.ai.mit.edu>.\n"),
	     stdout);
    }

  exit (status);
}


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


/* 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;

  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, *endp;

      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 != '+' && *startp != ',')
	++startp;
      if (*startp == '.')
	{
	  /* We found a codeset specification.  Now find the end.  */
	  endp = ++startp;
	  while (*endp != '\0' && *endp != '@')
	    ++endp;

	  if (endp > startp)
	    normal = _nl_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)
	asprintf (&result, "%s/%s%c", LOCALEDIR, path, '\0');
      else
	asprintf (&result, "%s/%.*s%s%s%c", LOCALEDIR, startp - path, path,
		  normal, endp, '\0');
    }
  else
    {
      /* This is a user path.  Please note the additional byte in the
	 memory allocation.  */
      result = xmalloc (strlen (path) + 2);
      strcpy (result, path);
    }

  errno = 0;

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

  strcat (result, "/");

  return result;
}