summary refs log tree commit diff
path: root/locale/programs/locale.c
blob: a4254e3000ca3e02cbc14b3300f129838eafa8ad (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
/* locale - Implementation of the locale program according to POSIX 1003.2
Copyright (C) 1995, 1996 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 <dirent.h>
#include <error.h>
#include <getopt.h>
#include <langinfo.h>
#include <libintl.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>

#include "localeinfo.h"


/* If set print the name of the category.  */
static int show_category_name;

/* If set print the name of the item.  */
static int show_keyword_name;

/* Long options.  */
static const struct option long_options[] =
{
  { "all-locales", no_argument, NULL, 'a' },
  { "category-name", no_argument, &show_category_name, 1 },
  { "charmaps", no_argument, NULL, 'm' },
  { "help", no_argument, NULL, 'h' },
  { "keyword-name", no_argument, &show_keyword_name, 1 },
  { "version", no_argument, NULL, 'V' },
  { NULL, 0, NULL, 0 }
};


/* We don't have these constants defined because we don't use them.  Give
   default values.  */
#define CTYPE_MB_CUR_MIN 0
#define CTYPE_MB_CUR_MAX 0
#define CTYPE_HASH_SIZE 0
#define CTYPE_HASH_LAYERS 0
#define CTYPE_CLASS 0
#define CTYPE_TOUPPER_EB 0
#define CTYPE_TOLOWER_EB 0
#define CTYPE_TOUPPER_EL 0
#define CTYPE_TOLOWER_EL 0

/* Definition of the data structure which represents a category and its
   items.  */
struct category
{
  int cat_id;
  const char *name;
  size_t number;
  struct cat_item
  {
    int item_id;
    const char *name;
    enum { std, opt } status;
    enum value_type value_type;
    int min;
    int max;
  } *item_desc;
};

/* Simple helper macro.  */
#define NELEMS(arr) ((sizeof (arr)) / (sizeof (arr[0])))

/* For some tricky stuff.  */
#define NO_PAREN(Item, More...) Item, ## More

/* We have all categories defined in `categories.def'.  Now construct
   the description and data structure used for all categories.  */
#define DEFINE_ELEMENT(Item, More...) { Item, ## More },
#define DEFINE_CATEGORY(category, name, items, postload, in, check, out)      \
    static struct cat_item category##_desc[] =				      \
      {									      \
        NO_PAREN items							      \
      };

#include "categories.def"
#undef DEFINE_CATEGORY

static struct category category[] =
  {
#define DEFINE_CATEGORY(category, name, items, postload, in, check, out)      \
    [category] = { _NL_NUM_##category, name, NELEMS (category##_desc),	      \
		   category##_desc },
#include "categories.def"
#undef DEFINE_CATEGORY
  };
#define NCATEGORIES NELEMS (category)


/* Automatically set variable.  */
extern const char *__progname;

/* helper function for extended name handling.  */
extern void locale_special (const char *name, int show_category_name,
			    int show_keyword_name);

/* Prototypes for local functions.  */
static void usage (int status) __attribute__ ((noreturn));
static void write_locales (void);
static void write_charmaps (void);
static void show_locale_vars (void);
static void show_info (const char *name);


int
main (int argc, char *argv[])
{
  int optchar;
  int do_all = 0;
  int do_help = 0;
  int do_version = 0;
  int do_charmaps = 0;

  /* Set initial values for global variables.  */
  show_category_name = 0;
  show_keyword_name = 0;

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

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

  while ((optchar = getopt_long (argc, argv, "achkmV", long_options, NULL))
         != EOF)
    switch (optchar)
      {
      case '\0':		/* Long option.  */
	break;
      case 'a':
	do_all = 1;
	break;
      case 'c':
	show_category_name = 1;
	break;
      case 'h':
	do_help = 1;
	break;
      case 'k':
	show_keyword_name = 1;
	break;
      case 'm':
	do_charmaps = 1;
	break;
      case 'V':
	do_version = 1;
	break;
      default:
	usage (EXIT_FAILURE);
      }

  /* Version information is requested.  */
  if (do_version)
    {
      fprintf (stderr, "%s - GNU %s %s\n", __progname, "libc", VERSION);
      exit (EXIT_SUCCESS);
    }

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

  /* `-a' requests the names of all available locales.  */
  if (do_all != 0)
    {
      write_locales ();
      exit (EXIT_SUCCESS);
    }

  /* `m' requests the names of all available charmaps.  The names can be
     used for the -f argument to localedef(3).  */
  if (do_charmaps != 0)
    {
      write_charmaps ();
      exit (EXIT_SUCCESS);
    }

  /* Specific information about the current locale are requested.
     Change to this locale now.  */
  setlocale (LC_ALL, "");

  /* If no real argument is given we have to print the contents of the
     current locale definition variables.  These are LANG and the LC_*.  */
  if (optind == argc && show_keyword_name == 0 && show_category_name == 0)
    {
      show_locale_vars ();
      exit (EXIT_SUCCESS);
    }

  /* Process all given names.  */
  while (optind <  argc)
    show_info (argv[optind++]);

  exit (EXIT_SUCCESS);
}


/* Display usage information and exit.  */
static void
usage (int status)
{
  if (status != EXIT_SUCCESS)
    fprintf (stderr, gettext ("Try `%s --help' for more information.\n"),
	     __progname);
  else
    printf (gettext ("\
Usage: %s [OPTION]... name\n\
Mandatory arguments to long options are mandatory for short options too.\n\
  -h, --help            display this help and exit\n\
  -V, --version         output version information and exit\n\
\n\
  -a, --all-locales     write names of available locales\n\
  -m, --charmaps        write names of available charmaps\n\
\n\
  -c, --category-name   write names of selected categories\n\
  -k, --keyword-name    write names of selected keywords\n\
Report bugs to <bug-glibc@gnu.ai.mit.edu>."),
	    __progname);

  exit (status);
}


/* Write the names of all available locales to stdout.  */
static void
write_locales (void)
{
  DIR *dir;
  struct dirent *dirent;

  /* `POSIX' locale is always available (POSIX.2 4.34.3).  */
  puts ("POSIX");

  dir = opendir (LOCALE_PATH);
  if (dir == NULL)
    {
      error (1, errno, gettext ("cannot read locale directory `%s'"),
	     LOCALE_PATH);
      return;
    }

  /* Now we can look for all files in the directory.  */
  while ((dirent = readdir (dir)) != NULL)
    if (strcmp (dirent->d_name, ".") != 0
	&& strcmp (dirent->d_name, "..") != 0)
      puts (dirent->d_name);

  closedir (dir);
}


/* Write the names of all available character maps to stdout.  */
static void
write_charmaps (void)
{
  DIR *dir;
  struct dirent *dirent;

  dir = opendir (CHARMAP_PATH);
  if (dir == NULL)
    {
      error (1, errno, gettext ("cannot read character map directory `%s'"),
	     CHARMAP_PATH);
      return;
    }

  /* Now we can look for all files in the directory.  */
  while ((dirent = readdir (dir)) != NULL)
    if (strcmp (dirent->d_name, ".") != 0
	&& strcmp (dirent->d_name, "..") != 0)
      puts (dirent->d_name);

  closedir (dir);
}


/* We have to show the contents of the environments determining the
   locale.  */
static void
show_locale_vars (void)
{
  size_t cat_no;
  const char *lcall = getenv ("LC_ALL");
  const char *lang = getenv ("LANG") ? : "POSIX";

  void get_source (const char *name)
    {
      char *val = getenv (name);

      if (lcall != NULL || val == NULL)
	printf ("%s=\"%s\"\n", name, lcall ? : lang);
      else
	printf ("%s=%s\n", name, val);
    }

  /* LANG has to be the first value.  */
  printf ("LANG=%s\n", lang);

  /* Now all categories in an unspecified order.  */
  for (cat_no = 0; cat_no < NCATEGORIES; ++cat_no)
    get_source (category[cat_no].name);

  /* The last is the LC_ALL value.  */
  printf ("LC_ALL=%s\n", lcall ? : "");
}


/* Show the information request for NAME.  */
static void
show_info (const char *name)
{
  size_t cat_no;

  void print_item (struct cat_item *item)
    {
      if (show_keyword_name != 0)
	printf ("%s=", item->name);

      switch (item->value_type)
	{
	case string:
	  printf ("%s%s%s", show_keyword_name ? "\"" : "",
		  nl_langinfo (item->item_id) ? : "",
		  show_keyword_name ? "\"" : "");
	  break;
	case stringarray:
	  {
	    int cnt;
	    const char *val;

	    if (show_keyword_name)
	      putchar ('"');

	    for (cnt = 0; cnt < item->max - 1; ++cnt)
	      {
		val = nl_langinfo (item->item_id + cnt);
		printf ("%s;", val ? : "");
	      }

	    val = nl_langinfo (item->item_id + cnt);
	    printf ("%s", val ? : "");

	    if (show_keyword_name)
	      putchar ('"');
	  }
	  break;
	case byte:
	  {
	    const char *val = nl_langinfo (item->item_id);

	    if (val != NULL)
	      printf ("%d", *val == CHAR_MAX ? -1 : *val);
	  }
	  break;
	case bytearray:
	  {
	    const char *val = nl_langinfo (item->item_id);
	    int cnt = val ? strlen (val) : 0;

	    while (cnt > 1)
	      {
		printf ("%d;", *val == CHAR_MAX ? -1 : *val);
                --cnt;
		++val;
	      }

	    printf ("%d", cnt == 0 || *val == CHAR_MAX ? -1 : *val);
	  }
	  break;
	case word:
	  {
	    unsigned int val = (unsigned int) nl_langinfo (item->item_id);
	    printf ("%d", val);
	  }
	  break;
	default:
	}
      putchar ('\n');
    }

  for (cat_no = 0; cat_no < NCATEGORIES; ++cat_no)
    {
      size_t item_no;

      if (strcmp (name, category[cat_no].name) == 0)
	/* Print the whole category.  */
	{
	  if (show_category_name != 0)
	    puts (category[cat_no].name);

	  for (item_no = 0; item_no < category[cat_no].number; ++item_no)
	    print_item (&category[cat_no].item_desc[item_no]);

	  return;
	}

      for (item_no = 0; item_no < category[cat_no].number; ++item_no)
	if (strcmp (name, category[cat_no].item_desc[item_no].name) == 0)
	  {
	    if (show_category_name != 0)
	      puts (category[cat_no].name);

	    print_item (&category[cat_no].item_desc[item_no]);
	    return;
	  }
    }

  /* When we get to here the name is not standard ones.  For testing
     and perhpas advanced use we allow some more symbols.  */
  locale_special (name, show_category_name, show_keyword_name);
}