1 /* Implementation of the locale program according to POSIX 1003.2.
2 Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
41 #include "localeinfo.h"
44 /* If set print the name of the category. */
45 static int show_category_name;
47 /* If set print the name of the item. */
48 static int show_keyword_name;
50 /* Print names of all available locales. */
53 /* Print names of all available character maps. */
54 static int do_charmaps = 0;
56 /* Name and version of program. */
57 static void print_version (FILE *stream, struct argp_state *state);
58 void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;
60 /* Definitions of arguments for argp functions. */
61 static const struct argp_option options[] =
63 { NULL, 0, NULL, 0, N_("System information:") },
64 { "all-locales", 'a', NULL, OPTION_NO_USAGE,
65 N_("Write names of available locales") },
66 { "charmaps", 'm', NULL, OPTION_NO_USAGE,
67 N_("Write names of available charmaps") },
68 { NULL, 0, NULL, 0, N_("Modify output format:") },
69 { "category-name", 'c', NULL, 0, N_("Write names of selected categories") },
70 { "keyword-name", 'k', NULL, 0, N_("Write names of selected keywords") },
71 { NULL, 0, NULL, 0, NULL }
74 /* Short description of program. */
75 static const char doc[] = N_("Get locale-specific information.");
77 /* Strings for arguments in help texts. */
78 static const char args_doc[] = N_("NAME\n[-a|-m]");
80 /* Prototype for option handler. */
81 static error_t parse_opt (int key, char *arg, struct argp_state *state);
83 /* Function to print some extra text in the help message. */
84 static char *more_help (int key, const char *text, void *input);
86 /* Data structure to communicate with argp functions. */
87 static struct argp argp =
89 options, parse_opt, args_doc, doc, NULL, more_help
93 /* We don't have these constants defined because we don't use them. Give
95 #define CTYPE_MB_CUR_MIN 0
96 #define CTYPE_MB_CUR_MAX 0
97 #define CTYPE_HASH_SIZE 0
98 #define CTYPE_HASH_LAYERS 0
100 #define CTYPE_TOUPPER_EB 0
101 #define CTYPE_TOLOWER_EB 0
102 #define CTYPE_TOUPPER_EL 0
103 #define CTYPE_TOLOWER_EL 0
105 /* Definition of the data structure which represents a category and its
116 enum { std, opt } status;
117 enum value_type value_type;
123 /* Simple helper macro. */
124 #define NELEMS(arr) ((sizeof (arr)) / (sizeof (arr[0])))
126 /* For some tricky stuff. */
127 #define NO_PAREN(Item, More...) Item, ## More
129 /* We have all categories defined in `categories.def'. Now construct
130 the description and data structure used for all categories. */
131 #define DEFINE_ELEMENT(Item, More...) { Item, ## More },
132 #define DEFINE_CATEGORY(category, name, items, postload, in, check, out) \
133 static struct cat_item category##_desc[] = \
138 #include "categories.def"
139 #undef DEFINE_CATEGORY
141 static struct category category[] =
143 #define DEFINE_CATEGORY(category, name, items, postload, in, check, out) \
144 [category] = { _NL_NUM_##category, name, NELEMS (category##_desc), \
146 #include "categories.def"
147 #undef DEFINE_CATEGORY
149 #define NCATEGORIES NELEMS (category)
152 /* Automatically set variable. */
153 extern const char *__progname;
155 /* helper function for extended name handling. */
156 extern void locale_special (const char *name, int show_category_name,
157 int show_keyword_name);
159 /* Prototypes for local functions. */
160 static void write_locales (void);
161 static void write_charmaps (void);
162 static void show_locale_vars (void);
163 static void show_info (const char *name);
167 main (int argc, char *argv[])
171 /* Set initial values for global variables. */
172 show_category_name = 0;
173 show_keyword_name = 0;
175 /* Set locale. Do not set LC_ALL because the other categories must
176 not be affected (according to POSIX.2). */
177 setlocale (LC_CTYPE, "");
178 setlocale (LC_MESSAGES, "");
180 /* Initialize the message catalog. */
181 textdomain (PACKAGE);
183 /* Parse and process arguments. */
184 argp_parse (&argp, argc, argv, 0, &remaining, NULL);
186 /* `-a' requests the names of all available locales. */
189 setlocale (LC_COLLATE, "");
194 /* `m' requests the names of all available charmaps. The names can be
195 used for the -f argument to localedef(3). */
196 if (do_charmaps != 0)
202 /* Specific information about the current locale are requested.
203 Change to this locale now. */
204 setlocale (LC_ALL, "");
206 /* If no real argument is given we have to print the contents of the
207 current locale definition variables. These are LANG and the LC_*. */
208 if (remaining == argc && show_keyword_name == 0 && show_category_name == 0)
214 /* Process all given names. */
215 while (remaining < argc)
216 show_info (argv[remaining++]);
222 /* Handle program arguments. */
224 parse_opt (int key, char *arg, struct argp_state *state)
232 show_category_name = 1;
238 show_keyword_name = 1;
241 return ARGP_ERR_UNKNOWN;
248 more_help (int key, const char *text, void *input)
252 case ARGP_KEY_HELP_EXTRA:
253 /* We print some extra information. */
254 return strdup (gettext ("\
255 Report bugs using the `glibcbug' script to <bugs@gnu.ai.mit.edu>.\n"));
259 return (char *) text;
262 /* Print the version information. */
264 print_version (FILE *stream, struct argp_state *state)
266 fprintf (stream, "locale (GNU %s) %s\n", PACKAGE, VERSION);
267 fprintf (stream, gettext ("\
268 Copyright (C) %s Free Software Foundation, Inc.\n\
269 This is free software; see the source for copying conditions. There is NO\n\
270 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
271 "), "1995, 1996, 1997");
272 fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
276 /* Simple action function which prints arguments as strings. */
278 print_names (const void *nodep, VISIT value, int level)
280 if (value == postorder || value == leaf)
281 puts (*(char **) nodep);
285 /* Write the names of all available locales to stdout. We have some
286 sources of the information: the contents of the locale directory
287 and the locale.alias file. To avoid duplicates and print the
288 result is a reasonable order we put all entries is a search tree
289 and print them afterwards. */
293 void *all_data = NULL;
295 struct dirent *dirent;
297 size_t alias_path_len;
300 #define PUT(name) tsearch ((name), &all_data, \
301 (int (*) (const void *, const void *)) strcoll)
303 dir = opendir (LOCALEDIR);
306 error (1, errno, gettext ("cannot read locale directory `%s'"),
311 /* `POSIX' locale is always available (POSIX.2 4.34.3). */
313 /* And so is the "C" locale. */
316 /* Now we can look for all files in the directory. */
317 while ((dirent = readdir (dir)) != NULL)
318 if (strcmp (dirent->d_name, ".") != 0
319 && strcmp (dirent->d_name, "..") != 0)
322 #ifdef _DIRENT_HAVE_D_TYPE
323 if (dirent->d_type != DT_UNKNOWN)
324 mode = DTTOIF (dirent->d_type);
329 char buf[sizeof (LOCALEDIR) + strlen (dirent->d_name) + 1];
331 stpcpy (stpcpy (stpcpy (buf, LOCALEDIR), "/"), dirent->d_name);
333 if (stat (buf, &st) < 0)
339 PUT (strdup (dirent->d_name));
344 /* Now read the locale.alias files. */
345 if (argz_create_sep (LOCALE_ALIAS_PATH, ':', &alias_path, &alias_path_len))
346 error (1, errno, gettext ("while preparing output"));
349 while ((entry = argz_next (alias_path, alias_path_len, entry)))
351 static const char aliasfile[] = "/locale.alias";
353 char full_name[strlen (entry) + sizeof aliasfile];
355 stpcpy (stpcpy (full_name, entry), aliasfile);
356 fp = fopen (full_name, "r");
358 /* Ignore non-existing files. */
363 /* It is a reasonable approach to use a fix buffer here
365 a) we are only interested in the first two fields
366 b) these fields must be usable as file names and so must
373 if (fgets (buf, BUFSIZ, fp) == NULL)
378 /* Ignore leading white space. */
379 while (isspace (cp[0]))
382 /* A leading '#' signals a comment line. */
383 if (cp[0] != '\0' && cp[0] != '#')
386 while (cp[0] != '\0' && !isspace (cp[0]))
388 /* Terminate alias name. */
392 /* Now look for the beginning of the value. */
393 while (isspace (cp[0]))
399 while (cp[0] != '\0' && !isspace (cp[0]))
401 /* Terminate value. */
404 /* This has to be done to make the following
405 test for the end of line possible. We are
406 looking for the terminating '\n' which do not
411 else if (cp[0] != '\0')
415 PUT (strdup (alias));
419 /* Possibly not the whole line fits into the buffer.
420 Ignore the rest of the line. */
421 while (strchr (cp, '\n') == NULL)
424 if (fgets (buf, BUFSIZ, fp) == NULL)
425 /* Make sure the inner loop will be left. The outer
426 loop will exit at the `feof' test. */
434 twalk (all_data, print_names);
438 /* Write the names of all available character maps to stdout. */
440 write_charmaps (void)
442 void *all_data = NULL;
444 struct dirent *dirent;
446 dir = opendir (CHARMAP_PATH);
449 error (1, errno, gettext ("cannot read character map directory `%s'"),
454 /* Now we can look for all files in the directory. */
455 while ((dirent = readdir (dir)) != NULL)
456 if (strcmp (dirent->d_name, ".") != 0
457 && strcmp (dirent->d_name, "..") != 0)
460 #ifdef _DIRENT_HAVE_D_TYPE
461 if (dirent->d_type != DT_UNKNOWN)
462 mode = DTTOIF (dirent->d_type);
467 char buf[sizeof (CHARMAP_PATH) + strlen (dirent->d_name) + 1];
469 stpcpy (stpcpy (stpcpy (buf, CHARMAP_PATH), "/"), dirent->d_name);
471 if (stat (buf, &st) < 0)
477 PUT (strdup (dirent->d_name));
482 twalk (all_data, print_names);
486 /* We have to show the contents of the environments determining the
489 show_locale_vars (void)
492 const char *lcall = getenv ("LC_ALL");
493 const char *lang = getenv ("LANG") ? : "POSIX";
495 void get_source (const char *name)
497 char *val = getenv (name);
499 if (lcall != NULL || val == NULL)
500 printf ("%s=\"%s\"\n", name, lcall ? : lang);
502 printf ("%s=%s\n", name, val);
505 /* LANG has to be the first value. */
506 printf ("LANG=%s\n", lang);
508 /* Now all categories in an unspecified order. */
509 for (cat_no = 0; cat_no < NCATEGORIES; ++cat_no)
510 get_source (category[cat_no].name);
512 /* The last is the LC_ALL value. */
513 printf ("LC_ALL=%s\n", lcall ? : "");
517 /* Show the information request for NAME. */
519 show_info (const char *name)
523 void print_item (struct cat_item *item)
525 if (show_keyword_name != 0)
526 printf ("%s=", item->name);
528 switch (item->value_type)
531 printf ("%s%s%s", show_keyword_name ? "\"" : "",
532 nl_langinfo (item->item_id) ? : "",
533 show_keyword_name ? "\"" : "");
540 if (show_keyword_name)
543 for (cnt = 0; cnt < item->max - 1; ++cnt)
545 val = nl_langinfo (item->item_id + cnt);
546 printf ("%s;", val ? : "");
549 val = nl_langinfo (item->item_id + cnt);
550 printf ("%s", val ? : "");
552 if (show_keyword_name)
558 const char *val = nl_langinfo (item->item_id);
561 printf ("%d", *val == CHAR_MAX ? -1 : *val);
566 const char *val = nl_langinfo (item->item_id);
567 int cnt = val ? strlen (val) : 0;
571 printf ("%d;", *val == CHAR_MAX ? -1 : *val);
576 printf ("%d", cnt == 0 || *val == CHAR_MAX ? -1 : *val);
581 unsigned int val = (unsigned int) nl_langinfo (item->item_id);
590 for (cat_no = 0; cat_no < NCATEGORIES; ++cat_no)
594 if (strcmp (name, category[cat_no].name) == 0)
595 /* Print the whole category. */
597 if (show_category_name != 0)
598 puts (category[cat_no].name);
600 for (item_no = 0; item_no < category[cat_no].number; ++item_no)
601 print_item (&category[cat_no].item_desc[item_no]);
606 for (item_no = 0; item_no < category[cat_no].number; ++item_no)
607 if (strcmp (name, category[cat_no].item_desc[item_no].name) == 0)
609 if (show_category_name != 0)
610 puts (category[cat_no].name);
612 print_item (&category[cat_no].item_desc[item_no]);
617 /* The name is not a standard one.
618 For testing and perhaps advanced use allow some more symbols. */
619 locale_special (name, show_category_name, show_keyword_name);