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Commit | Line | Data |
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ccc6cda3 JA |
1 | /* locale.c - Miscellaneous internationalization functions. */ |
2 | ||
3 | /* Copyright (C) 1996 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
11 | ||
12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with Bash; see the file COPYING. If not, write to the Free Software | |
bb70624e | 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
ccc6cda3 JA |
20 | |
21 | #include "config.h" | |
22 | ||
23 | #include "bashtypes.h" | |
24 | ||
25 | #if defined (HAVE_UNISTD_H) | |
26 | # include <unistd.h> | |
27 | #endif | |
28 | ||
29 | #include "bashintl.h" | |
30 | #include "bashansi.h" | |
31 | #include <stdio.h> | |
f73dda09 | 32 | #include "chartypes.h" |
ccc6cda3 JA |
33 | |
34 | #include "shell.h" | |
7117c2d2 JA |
35 | #include "input.h" /* For bash_input */ |
36 | ||
37 | extern int dump_translatable_strings, dump_po_strings; | |
ccc6cda3 JA |
38 | |
39 | /* The current locale when the program begins */ | |
40 | static char *default_locale; | |
41 | ||
42 | /* The current domain for textdomain(3). */ | |
43 | static char *default_domain; | |
44 | static char *default_dir; | |
45 | ||
46 | /* tracks the value of LC_ALL; used to override values for other locale | |
47 | categories */ | |
48 | static char *lc_all; | |
49 | ||
d3a24ed2 CR |
50 | /* tracks the value of LC_ALL; used to provide defaults for locale |
51 | categories */ | |
52 | static char *lang; | |
53 | ||
54 | static int reset_locale_vars __P((void)); | |
55 | ||
56 | static void locale_setblanks __P((void)); | |
57 | ||
ccc6cda3 JA |
58 | /* Set the value of default_locale and make the current locale the |
59 | system default locale. This should be called very early in main(). */ | |
60 | void | |
61 | set_default_locale () | |
62 | { | |
63 | #if defined (HAVE_SETLOCALE) | |
64 | default_locale = setlocale (LC_ALL, ""); | |
65 | if (default_locale) | |
66 | default_locale = savestring (default_locale); | |
67 | #endif /* HAVE_SETLOCALE */ | |
5e13499c CR |
68 | bindtextdomain (PACKAGE, LOCALEDIR); |
69 | textdomain (PACKAGE); | |
ccc6cda3 JA |
70 | } |
71 | ||
d3a24ed2 CR |
72 | /* Set default values for LC_CTYPE, LC_COLLATE, LC_MESSAGES and LC_NUMERIC |
73 | if they are not specified in the environment, but LC_ALL is. This | |
ccc6cda3 JA |
74 | should be called from main() after parsing the environment. */ |
75 | void | |
76 | set_default_locale_vars () | |
77 | { | |
78 | char *val; | |
d3a24ed2 | 79 | int r; |
ccc6cda3 JA |
80 | |
81 | #if defined (HAVE_SETLOCALE) | |
d3a24ed2 CR |
82 | |
83 | # if defined (LC_CTYPE) | |
ccc6cda3 JA |
84 | val = get_string_value ("LC_CTYPE"); |
85 | if (val == 0 && lc_all && *lc_all) | |
d3a24ed2 CR |
86 | { |
87 | setlocale (LC_CTYPE, lc_all); | |
88 | locale_setblanks (); | |
89 | } | |
90 | # endif | |
ccc6cda3 JA |
91 | |
92 | # if defined (LC_COLLATE) | |
93 | val = get_string_value ("LC_COLLATE"); | |
94 | if (val == 0 && lc_all && *lc_all) | |
95 | setlocale (LC_COLLATE, lc_all); | |
96 | # endif /* LC_COLLATE */ | |
97 | ||
98 | # if defined (LC_MESSAGES) | |
99 | val = get_string_value ("LC_MESSAGES"); | |
100 | if (val == 0 && lc_all && *lc_all) | |
101 | setlocale (LC_MESSAGES, lc_all); | |
102 | # endif /* LC_MESSAGES */ | |
103 | ||
bb70624e JA |
104 | # if defined (LC_NUMERIC) |
105 | val = get_string_value ("LC_NUMERIC"); | |
106 | if (val == 0 && lc_all && *lc_all) | |
107 | setlocale (LC_NUMERIC, lc_all); | |
108 | # endif /* LC_NUMERIC */ | |
109 | ||
ccc6cda3 JA |
110 | #endif /* HAVE_SETLOCALE */ |
111 | ||
112 | val = get_string_value ("TEXTDOMAIN"); | |
113 | if (val && *val) | |
114 | { | |
115 | FREE (default_domain); | |
116 | default_domain = savestring (val); | |
5e13499c CR |
117 | #if 0 |
118 | /* Don't want to override the shell's textdomain as the default */ | |
ccc6cda3 | 119 | textdomain (default_domain); |
5e13499c | 120 | #endif |
ccc6cda3 JA |
121 | } |
122 | ||
123 | val = get_string_value ("TEXTDOMAINDIR"); | |
124 | if (val && *val) | |
125 | { | |
126 | FREE (default_dir); | |
127 | default_dir = savestring (val); | |
5e13499c CR |
128 | if (default_domain && *default_domain) |
129 | bindtextdomain (default_domain, default_dir); | |
ccc6cda3 JA |
130 | } |
131 | } | |
132 | ||
133 | /* Set one of the locale categories (specified by VAR) to VALUE. Returns 1 | |
134 | if successful, 0 otherwise. */ | |
135 | int | |
136 | set_locale_var (var, value) | |
137 | char *var, *value; | |
138 | { | |
d3a24ed2 CR |
139 | int r; |
140 | ||
ccc6cda3 JA |
141 | if (var[0] == 'T' && var[10] == 0) /* TEXTDOMAIN */ |
142 | { | |
143 | FREE (default_domain); | |
144 | default_domain = value ? savestring (value) : (char *)NULL; | |
5e13499c CR |
145 | #if 0 |
146 | /* Don't want to override the shell's textdomain as the default */ | |
ccc6cda3 | 147 | textdomain (default_domain); |
5e13499c | 148 | #endif |
ccc6cda3 JA |
149 | return (1); |
150 | } | |
151 | else if (var[0] == 'T') /* TEXTDOMAINDIR */ | |
152 | { | |
153 | FREE (default_dir); | |
154 | default_dir = value ? savestring (value) : (char *)NULL; | |
5e13499c CR |
155 | if (default_domain && *default_domain) |
156 | bindtextdomain (default_domain, default_dir); | |
ccc6cda3 JA |
157 | return (1); |
158 | } | |
159 | ||
160 | /* var[0] == 'L' && var[1] == 'C' && var[2] == '_' */ | |
161 | ||
162 | else if (var[3] == 'A') /* LC_ALL */ | |
163 | { | |
164 | FREE (lc_all); | |
e8ce775d JA |
165 | if (value) |
166 | lc_all = savestring (value); | |
e8ce775d JA |
167 | else |
168 | { | |
f73dda09 | 169 | lc_all = (char *)xmalloc (1); |
e8ce775d JA |
170 | lc_all[0] = '\0'; |
171 | } | |
ccc6cda3 | 172 | #if defined (HAVE_SETLOCALE) |
d3a24ed2 CR |
173 | r = *lc_all ? (setlocale (LC_ALL, lc_all) != 0) : reset_locale_vars (); |
174 | locale_setblanks (); | |
175 | return r; | |
ccc6cda3 JA |
176 | #else |
177 | return (1); | |
178 | #endif | |
179 | } | |
180 | ||
181 | #if defined (HAVE_SETLOCALE) | |
182 | else if (var[3] == 'C' && var[4] == 'T') /* LC_CTYPE */ | |
183 | { | |
d3a24ed2 | 184 | # if defined (LC_CTYPE) |
ccc6cda3 | 185 | if (lc_all == 0 || *lc_all == '\0') |
d3a24ed2 CR |
186 | { |
187 | r = (setlocale (LC_CTYPE, get_locale_var ("LC_CTYPE")) != 0); | |
188 | locale_setblanks (); | |
189 | return r; | |
190 | } | |
191 | # endif | |
ccc6cda3 JA |
192 | } |
193 | else if (var[3] == 'C' && var[4] == 'O') /* LC_COLLATE */ | |
194 | { | |
195 | # if defined (LC_COLLATE) | |
196 | if (lc_all == 0 || *lc_all == '\0') | |
d3a24ed2 | 197 | return (setlocale (LC_COLLATE, get_locale_var ("LC_COLLATE")) != 0); |
ccc6cda3 JA |
198 | # endif /* LC_COLLATE */ |
199 | } | |
200 | else if (var[3] == 'M' && var[4] == 'E') /* LC_MESSAGES */ | |
201 | { | |
202 | # if defined (LC_MESSAGES) | |
203 | if (lc_all == 0 || *lc_all == '\0') | |
d3a24ed2 | 204 | return (setlocale (LC_MESSAGES, get_locale_var ("LC_MESSAGES")) != 0); |
ccc6cda3 JA |
205 | # endif /* LC_MESSAGES */ |
206 | } | |
f73dda09 | 207 | else if (var[3] == 'N' && var[4] == 'U') /* LC_NUMERIC */ |
bb70624e JA |
208 | { |
209 | # if defined (LC_NUMERIC) | |
210 | if (lc_all == 0 || *lc_all == '\0') | |
d3a24ed2 | 211 | return (setlocale (LC_NUMERIC, get_locale_var ("LC_NUMERIC")) != 0); |
bb70624e JA |
212 | # endif /* LC_NUMERIC */ |
213 | } | |
ccc6cda3 JA |
214 | #endif /* HAVE_SETLOCALE */ |
215 | ||
216 | return (0); | |
217 | } | |
218 | ||
d3a24ed2 CR |
219 | /* Called when LANG is assigned a value. Tracks value in `lang'. Calls |
220 | reset_locale_vars() to reset any default values if LC_ALL is unset or | |
221 | null. */ | |
ccc6cda3 JA |
222 | int |
223 | set_lang (var, value) | |
224 | char *var, *value; | |
225 | { | |
d3a24ed2 CR |
226 | FREE (lang); |
227 | if (value) | |
228 | lang = savestring (value); | |
229 | else | |
230 | { | |
231 | lang = (char *)xmalloc (1); | |
232 | lang[0] = '\0'; | |
233 | } | |
234 | ||
235 | return ((lc_all == 0 || *lc_all == 0) ? reset_locale_vars () : 0); | |
ccc6cda3 JA |
236 | } |
237 | ||
d3a24ed2 CR |
238 | /* Get the value of one of the locale variables (LC_MESSAGES, LC_CTYPE). |
239 | The precedence is as POSIX.2 specifies: LC_ALL has precedence over | |
240 | the specific locale variables, and LANG, if set, is used as the default. */ | |
ccc6cda3 JA |
241 | char * |
242 | get_locale_var (var) | |
243 | char *var; | |
244 | { | |
245 | char *locale; | |
246 | ||
247 | locale = lc_all; | |
248 | ||
d3a24ed2 | 249 | if (locale == 0 || *locale == 0) |
ccc6cda3 | 250 | locale = get_string_value (var); |
d3a24ed2 CR |
251 | if (locale == 0 || *locale == 0) |
252 | locale = lang; | |
253 | if (locale == 0 || *locale == 0) | |
254 | locale = default_locale; /* system-dependent; not really portable */ | |
ccc6cda3 JA |
255 | |
256 | return (locale); | |
257 | } | |
258 | ||
d3a24ed2 CR |
259 | static int |
260 | reset_locale_vars () | |
261 | { | |
262 | #if defined (HAVE_SETLOCALE) | |
263 | char *locale; | |
264 | ||
265 | locale = lang; | |
266 | if (locale == 0 || *locale == '\0') | |
267 | locale = default_locale; | |
268 | if (setlocale (LC_ALL, locale) == 0) | |
269 | return 0; | |
270 | ||
271 | # if defined (LC_CTYPE) | |
272 | setlocale (LC_CTYPE, get_locale_var ("LC_CTYPE")); | |
273 | # endif | |
274 | # if defined (LC_COLLATE) | |
275 | setlocale (LC_COLLATE, get_locale_var ("LC_COLLATE")); | |
276 | # endif | |
277 | # if defined (LC_MESSAGES) | |
278 | setlocale (LC_MESSAGES, get_locale_var ("LC_MESSAGES")); | |
279 | # endif | |
280 | # if defined (LC_NUMERIC) | |
281 | setlocale (LC_NUMERIC, get_locale_var ("LC_NUMERIC")); | |
282 | # endif | |
283 | ||
284 | locale_setblanks (); | |
285 | ||
286 | #endif | |
287 | return 1; | |
288 | } | |
289 | ||
ccc6cda3 JA |
290 | /* Translate the contents of STRING, a $"..." quoted string, according |
291 | to the current locale. In the `C' or `POSIX' locale, or if gettext() | |
292 | is not available, the passed string is returned unchanged. The | |
293 | length of the translated string is returned in LENP, if non-null. */ | |
294 | char * | |
295 | localetrans (string, len, lenp) | |
296 | char *string; | |
297 | int len, *lenp; | |
298 | { | |
299 | char *locale, *t; | |
ccc6cda3 JA |
300 | char *translated; |
301 | int tlen; | |
ccc6cda3 JA |
302 | |
303 | /* Don't try to translate null strings. */ | |
304 | if (string == 0 || *string == 0) | |
305 | { | |
306 | if (lenp) | |
28ef6c31 | 307 | *lenp = 0; |
ccc6cda3 JA |
308 | return ((char *)NULL); |
309 | } | |
310 | ||
ccc6cda3 JA |
311 | locale = get_locale_var ("LC_MESSAGES"); |
312 | ||
313 | /* If we don't have setlocale() or the current locale is `C' or `POSIX', | |
314 | just return the string. If we don't have gettext(), there's no use | |
315 | doing anything else. */ | |
ccc6cda3 JA |
316 | if (locale == 0 || locale[0] == '\0' || |
317 | (locale[0] == 'C' && locale[1] == '\0') || STREQ (locale, "POSIX")) | |
ccc6cda3 | 318 | { |
f73dda09 | 319 | t = (char *)xmalloc (len + 1); |
ccc6cda3 JA |
320 | strcpy (t, string); |
321 | if (lenp) | |
322 | *lenp = len; | |
323 | return (t); | |
324 | } | |
325 | ||
ccc6cda3 | 326 | /* Now try to translate it. */ |
5e13499c CR |
327 | if (default_domain && *default_domain) |
328 | translated = dgettext (default_domain, string); | |
329 | else | |
330 | translated = string; | |
331 | ||
ccc6cda3 JA |
332 | if (translated == string) /* gettext returns its argument if untranslatable */ |
333 | { | |
f73dda09 | 334 | t = (char *)xmalloc (len + 1); |
ccc6cda3 JA |
335 | strcpy (t, string); |
336 | if (lenp) | |
337 | *lenp = len; | |
338 | } | |
339 | else | |
340 | { | |
ccc6cda3 | 341 | tlen = strlen (translated); |
f73dda09 | 342 | t = (char *)xmalloc (tlen + 1); |
ccc6cda3 JA |
343 | strcpy (t, translated); |
344 | if (lenp) | |
345 | *lenp = tlen; | |
346 | } | |
347 | return (t); | |
ccc6cda3 | 348 | } |
7117c2d2 JA |
349 | |
350 | /* Change a bash string into a string suitable for inclusion in a `po' file. | |
351 | This backslash-escapes `"' and `\' and changes newlines into \\\n"\n". */ | |
352 | char * | |
353 | mk_msgstr (string, foundnlp) | |
354 | char *string; | |
355 | int *foundnlp; | |
356 | { | |
357 | register int c, len; | |
358 | char *result, *r, *s; | |
359 | ||
360 | for (len = 0, s = string; s && *s; s++) | |
361 | { | |
362 | len++; | |
363 | if (*s == '"' || *s == '\\') | |
364 | len++; | |
365 | else if (*s == '\n') | |
366 | len += 5; | |
367 | } | |
368 | ||
369 | r = result = (char *)xmalloc (len + 3); | |
370 | *r++ = '"'; | |
371 | ||
372 | for (s = string; s && (c = *s); s++) | |
373 | { | |
374 | if (c == '\n') /* <NL> -> \n"<NL>" */ | |
375 | { | |
376 | *r++ = '\\'; | |
377 | *r++ = 'n'; | |
378 | *r++ = '"'; | |
379 | *r++ = '\n'; | |
380 | *r++ = '"'; | |
381 | if (foundnlp) | |
382 | *foundnlp = 1; | |
383 | continue; | |
384 | } | |
385 | if (c == '"' || c == '\\') | |
386 | *r++ = '\\'; | |
387 | *r++ = c; | |
388 | } | |
389 | ||
390 | *r++ = '"'; | |
391 | *r++ = '\0'; | |
392 | ||
393 | return result; | |
394 | } | |
395 | ||
396 | /* $"..." -- Translate the portion of STRING between START and END | |
397 | according to current locale using gettext (if available) and return | |
398 | the result. The caller will take care of leaving the quotes intact. | |
399 | The string will be left without the leading `$' by the caller. | |
400 | If translation is performed, the translated string will be double-quoted | |
401 | by the caller. The length of the translated string is returned in LENP, | |
402 | if non-null. */ | |
403 | char * | |
404 | localeexpand (string, start, end, lineno, lenp) | |
405 | char *string; | |
406 | int start, end, lineno, *lenp; | |
407 | { | |
408 | int len, tlen, foundnl; | |
409 | char *temp, *t, *t2; | |
410 | ||
411 | temp = (char *)xmalloc (end - start + 1); | |
412 | for (tlen = 0, len = start; len < end; ) | |
413 | temp[tlen++] = string[len++]; | |
414 | temp[tlen] = '\0'; | |
415 | ||
416 | /* If we're just dumping translatable strings, don't do anything with the | |
5e13499c CR |
417 | string itself, but if we're dumping in `po' file format, convert it into |
418 | a form more palatable to gettext(3) and friends by quoting `"' and `\' | |
419 | with backslashes and converting <NL> into `\n"<NL>"'. If we find a | |
420 | newline in TEMP, we first output a `msgid ""' line and then the | |
421 | translated string; otherwise we output the `msgid' and translated | |
422 | string all on one line. */ | |
7117c2d2 JA |
423 | if (dump_translatable_strings) |
424 | { | |
425 | if (dump_po_strings) | |
426 | { | |
427 | foundnl = 0; | |
428 | t = mk_msgstr (temp, &foundnl); | |
429 | t2 = foundnl ? "\"\"\n" : ""; | |
430 | ||
431 | printf ("#: %s:%d\nmsgid %s%s\nmsgstr \"\"\n", | |
432 | yy_input_name (), lineno, t2, t); | |
433 | free (t); | |
434 | } | |
435 | else | |
436 | printf ("\"%s\"\n", temp); | |
437 | ||
438 | if (lenp) | |
439 | *lenp = tlen; | |
440 | return (temp); | |
441 | } | |
442 | else if (*temp) | |
443 | { | |
444 | t = localetrans (temp, tlen, &len); | |
445 | free (temp); | |
446 | if (lenp) | |
447 | *lenp = len; | |
448 | return (t); | |
449 | } | |
450 | else | |
451 | { | |
452 | if (lenp) | |
453 | *lenp = 0; | |
454 | return (temp); | |
455 | } | |
456 | } | |
d3a24ed2 CR |
457 | |
458 | /* Set every character in the <blank> character class to be a shell break | |
459 | character for the lexical analyzer when the locale changes. */ | |
460 | static void | |
461 | locale_setblanks () | |
462 | { | |
463 | int x; | |
464 | ||
465 | for (x = 0; x < sh_syntabsiz; x++) | |
466 | { | |
467 | if (isblank (x)) | |
468 | sh_syntaxtab[x] |= CSHBRK; | |
469 | else if (member (x, shell_break_chars)) | |
470 | sh_syntaxtab[x] |= CSHBRK; | |
471 | else | |
472 | sh_syntaxtab[x] &= ~CSHBRK; | |
473 | } | |
474 | } |