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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 | ||
50 | /* Set the value of default_locale and make the current locale the | |
51 | system default locale. This should be called very early in main(). */ | |
52 | void | |
53 | set_default_locale () | |
54 | { | |
55 | #if defined (HAVE_SETLOCALE) | |
56 | default_locale = setlocale (LC_ALL, ""); | |
57 | if (default_locale) | |
58 | default_locale = savestring (default_locale); | |
59 | #endif /* HAVE_SETLOCALE */ | |
60 | } | |
61 | ||
62 | /* Set default values for LC_CTYPE, LC_COLLATE, and LC_MESSAGES if they | |
63 | are not specified in the environment, but LANG or LC_ALL is. This | |
64 | should be called from main() after parsing the environment. */ | |
65 | void | |
66 | set_default_locale_vars () | |
67 | { | |
68 | char *val; | |
69 | ||
70 | #if defined (HAVE_SETLOCALE) | |
71 | val = get_string_value ("LC_CTYPE"); | |
72 | if (val == 0 && lc_all && *lc_all) | |
73 | setlocale (LC_CTYPE, lc_all); | |
74 | ||
75 | # if defined (LC_COLLATE) | |
76 | val = get_string_value ("LC_COLLATE"); | |
77 | if (val == 0 && lc_all && *lc_all) | |
78 | setlocale (LC_COLLATE, lc_all); | |
79 | # endif /* LC_COLLATE */ | |
80 | ||
81 | # if defined (LC_MESSAGES) | |
82 | val = get_string_value ("LC_MESSAGES"); | |
83 | if (val == 0 && lc_all && *lc_all) | |
84 | setlocale (LC_MESSAGES, lc_all); | |
85 | # endif /* LC_MESSAGES */ | |
86 | ||
bb70624e JA |
87 | # if defined (LC_NUMERIC) |
88 | val = get_string_value ("LC_NUMERIC"); | |
89 | if (val == 0 && lc_all && *lc_all) | |
90 | setlocale (LC_NUMERIC, lc_all); | |
91 | # endif /* LC_NUMERIC */ | |
92 | ||
ccc6cda3 JA |
93 | #endif /* HAVE_SETLOCALE */ |
94 | ||
95 | val = get_string_value ("TEXTDOMAIN"); | |
96 | if (val && *val) | |
97 | { | |
98 | FREE (default_domain); | |
99 | default_domain = savestring (val); | |
100 | textdomain (default_domain); | |
101 | } | |
102 | ||
103 | val = get_string_value ("TEXTDOMAINDIR"); | |
104 | if (val && *val) | |
105 | { | |
106 | FREE (default_dir); | |
107 | default_dir = savestring (val); | |
108 | bindtextdomain (default_domain, default_dir); | |
109 | } | |
110 | } | |
111 | ||
112 | /* Set one of the locale categories (specified by VAR) to VALUE. Returns 1 | |
113 | if successful, 0 otherwise. */ | |
114 | int | |
115 | set_locale_var (var, value) | |
116 | char *var, *value; | |
117 | { | |
118 | if (var[0] == 'T' && var[10] == 0) /* TEXTDOMAIN */ | |
119 | { | |
120 | FREE (default_domain); | |
121 | default_domain = value ? savestring (value) : (char *)NULL; | |
122 | textdomain (default_domain); | |
123 | return (1); | |
124 | } | |
125 | else if (var[0] == 'T') /* TEXTDOMAINDIR */ | |
126 | { | |
127 | FREE (default_dir); | |
128 | default_dir = value ? savestring (value) : (char *)NULL; | |
129 | bindtextdomain (default_domain, default_dir); | |
130 | return (1); | |
131 | } | |
132 | ||
133 | /* var[0] == 'L' && var[1] == 'C' && var[2] == '_' */ | |
134 | ||
135 | else if (var[3] == 'A') /* LC_ALL */ | |
136 | { | |
137 | FREE (lc_all); | |
e8ce775d JA |
138 | if (value) |
139 | lc_all = savestring (value); | |
140 | else if (default_locale) | |
141 | lc_all = savestring (default_locale); | |
142 | else | |
143 | { | |
f73dda09 | 144 | lc_all = (char *)xmalloc (1); |
e8ce775d JA |
145 | lc_all[0] = '\0'; |
146 | } | |
ccc6cda3 | 147 | #if defined (HAVE_SETLOCALE) |
bb70624e | 148 | return (setlocale (LC_ALL, lc_all) != 0); |
ccc6cda3 JA |
149 | #else |
150 | return (1); | |
151 | #endif | |
152 | } | |
153 | ||
154 | #if defined (HAVE_SETLOCALE) | |
155 | else if (var[3] == 'C' && var[4] == 'T') /* LC_CTYPE */ | |
156 | { | |
157 | if (lc_all == 0 || *lc_all == '\0') | |
bb70624e | 158 | return (setlocale (LC_CTYPE, value ? value : "") != 0); |
ccc6cda3 JA |
159 | } |
160 | else if (var[3] == 'C' && var[4] == 'O') /* LC_COLLATE */ | |
161 | { | |
162 | # if defined (LC_COLLATE) | |
163 | if (lc_all == 0 || *lc_all == '\0') | |
bb70624e | 164 | return (setlocale (LC_COLLATE, value ? value : "") != 0); |
ccc6cda3 JA |
165 | # endif /* LC_COLLATE */ |
166 | } | |
167 | else if (var[3] == 'M' && var[4] == 'E') /* LC_MESSAGES */ | |
168 | { | |
169 | # if defined (LC_MESSAGES) | |
170 | if (lc_all == 0 || *lc_all == '\0') | |
bb70624e | 171 | return (setlocale (LC_MESSAGES, value ? value : "") != 0); |
ccc6cda3 JA |
172 | # endif /* LC_MESSAGES */ |
173 | } | |
f73dda09 | 174 | else if (var[3] == 'N' && var[4] == 'U') /* LC_NUMERIC */ |
bb70624e JA |
175 | { |
176 | # if defined (LC_NUMERIC) | |
177 | if (lc_all == 0 || *lc_all == '\0') | |
178 | return (setlocale (LC_NUMERIC, value ? value : "") != 0); | |
179 | # endif /* LC_NUMERIC */ | |
180 | } | |
ccc6cda3 JA |
181 | #endif /* HAVE_SETLOCALE */ |
182 | ||
183 | return (0); | |
184 | } | |
185 | ||
7117c2d2 JA |
186 | /* Called when LANG is assigned a value. Sets LC_ALL category with |
187 | setlocale(3) if that has not already been set. Doesn't change any | |
188 | shell variables. */ | |
ccc6cda3 JA |
189 | int |
190 | set_lang (var, value) | |
191 | char *var, *value; | |
192 | { | |
7117c2d2 | 193 | return ((lc_all == 0 || *lc_all == 0) ? setlocale (LC_ALL, value?value:"") != NULL : 0); |
ccc6cda3 JA |
194 | } |
195 | ||
196 | /* Get the value of one of the locale variables (LC_MESSAGES, LC_CTYPE) */ | |
197 | char * | |
198 | get_locale_var (var) | |
199 | char *var; | |
200 | { | |
201 | char *locale; | |
202 | ||
203 | locale = lc_all; | |
204 | ||
205 | if (locale == 0) | |
206 | locale = get_string_value (var); | |
207 | if (locale == 0) | |
208 | locale = default_locale; | |
209 | ||
210 | return (locale); | |
211 | } | |
212 | ||
213 | /* Translate the contents of STRING, a $"..." quoted string, according | |
214 | to the current locale. In the `C' or `POSIX' locale, or if gettext() | |
215 | is not available, the passed string is returned unchanged. The | |
216 | length of the translated string is returned in LENP, if non-null. */ | |
217 | char * | |
218 | localetrans (string, len, lenp) | |
219 | char *string; | |
220 | int len, *lenp; | |
221 | { | |
222 | char *locale, *t; | |
223 | #if defined (HAVE_GETTEXT) | |
224 | char *translated; | |
225 | int tlen; | |
226 | #endif | |
227 | ||
228 | /* Don't try to translate null strings. */ | |
229 | if (string == 0 || *string == 0) | |
230 | { | |
231 | if (lenp) | |
28ef6c31 | 232 | *lenp = 0; |
ccc6cda3 JA |
233 | return ((char *)NULL); |
234 | } | |
235 | ||
ccc6cda3 JA |
236 | locale = get_locale_var ("LC_MESSAGES"); |
237 | ||
238 | /* If we don't have setlocale() or the current locale is `C' or `POSIX', | |
239 | just return the string. If we don't have gettext(), there's no use | |
240 | doing anything else. */ | |
241 | #if defined (HAVE_GETTEXT) | |
242 | if (locale == 0 || locale[0] == '\0' || | |
243 | (locale[0] == 'C' && locale[1] == '\0') || STREQ (locale, "POSIX")) | |
244 | #endif | |
245 | { | |
f73dda09 | 246 | t = (char *)xmalloc (len + 1); |
ccc6cda3 JA |
247 | strcpy (t, string); |
248 | if (lenp) | |
249 | *lenp = len; | |
250 | return (t); | |
251 | } | |
252 | ||
253 | #if defined (HAVE_GETTEXT) | |
254 | /* Now try to translate it. */ | |
255 | translated = gettext (string); | |
256 | if (translated == string) /* gettext returns its argument if untranslatable */ | |
257 | { | |
f73dda09 | 258 | t = (char *)xmalloc (len + 1); |
ccc6cda3 JA |
259 | strcpy (t, string); |
260 | if (lenp) | |
261 | *lenp = len; | |
262 | } | |
263 | else | |
264 | { | |
ccc6cda3 | 265 | tlen = strlen (translated); |
f73dda09 | 266 | t = (char *)xmalloc (tlen + 1); |
ccc6cda3 JA |
267 | strcpy (t, translated); |
268 | if (lenp) | |
269 | *lenp = tlen; | |
270 | } | |
271 | return (t); | |
272 | #endif /* HAVE_GETTEXT */ | |
273 | } | |
7117c2d2 JA |
274 | |
275 | /* Change a bash string into a string suitable for inclusion in a `po' file. | |
276 | This backslash-escapes `"' and `\' and changes newlines into \\\n"\n". */ | |
277 | char * | |
278 | mk_msgstr (string, foundnlp) | |
279 | char *string; | |
280 | int *foundnlp; | |
281 | { | |
282 | register int c, len; | |
283 | char *result, *r, *s; | |
284 | ||
285 | for (len = 0, s = string; s && *s; s++) | |
286 | { | |
287 | len++; | |
288 | if (*s == '"' || *s == '\\') | |
289 | len++; | |
290 | else if (*s == '\n') | |
291 | len += 5; | |
292 | } | |
293 | ||
294 | r = result = (char *)xmalloc (len + 3); | |
295 | *r++ = '"'; | |
296 | ||
297 | for (s = string; s && (c = *s); s++) | |
298 | { | |
299 | if (c == '\n') /* <NL> -> \n"<NL>" */ | |
300 | { | |
301 | *r++ = '\\'; | |
302 | *r++ = 'n'; | |
303 | *r++ = '"'; | |
304 | *r++ = '\n'; | |
305 | *r++ = '"'; | |
306 | if (foundnlp) | |
307 | *foundnlp = 1; | |
308 | continue; | |
309 | } | |
310 | if (c == '"' || c == '\\') | |
311 | *r++ = '\\'; | |
312 | *r++ = c; | |
313 | } | |
314 | ||
315 | *r++ = '"'; | |
316 | *r++ = '\0'; | |
317 | ||
318 | return result; | |
319 | } | |
320 | ||
321 | /* $"..." -- Translate the portion of STRING between START and END | |
322 | according to current locale using gettext (if available) and return | |
323 | the result. The caller will take care of leaving the quotes intact. | |
324 | The string will be left without the leading `$' by the caller. | |
325 | If translation is performed, the translated string will be double-quoted | |
326 | by the caller. The length of the translated string is returned in LENP, | |
327 | if non-null. */ | |
328 | char * | |
329 | localeexpand (string, start, end, lineno, lenp) | |
330 | char *string; | |
331 | int start, end, lineno, *lenp; | |
332 | { | |
333 | int len, tlen, foundnl; | |
334 | char *temp, *t, *t2; | |
335 | ||
336 | temp = (char *)xmalloc (end - start + 1); | |
337 | for (tlen = 0, len = start; len < end; ) | |
338 | temp[tlen++] = string[len++]; | |
339 | temp[tlen] = '\0'; | |
340 | ||
341 | /* If we're just dumping translatable strings, don't do anything with the | |
342 | string itself, but if we're dumping in `po' file format, convert it into a form more palatable to gettext(3) | |
343 | and friends by quoting `"' and `\' with backslashes and converting <NL> | |
344 | into `\n"<NL>"'. If we find a newline in TEMP, we first output a | |
345 | `msgid ""' line and then the translated string; otherwise we output the | |
346 | `msgid' and translated string all on one line. */ | |
347 | if (dump_translatable_strings) | |
348 | { | |
349 | if (dump_po_strings) | |
350 | { | |
351 | foundnl = 0; | |
352 | t = mk_msgstr (temp, &foundnl); | |
353 | t2 = foundnl ? "\"\"\n" : ""; | |
354 | ||
355 | printf ("#: %s:%d\nmsgid %s%s\nmsgstr \"\"\n", | |
356 | yy_input_name (), lineno, t2, t); | |
357 | free (t); | |
358 | } | |
359 | else | |
360 | printf ("\"%s\"\n", temp); | |
361 | ||
362 | if (lenp) | |
363 | *lenp = tlen; | |
364 | return (temp); | |
365 | } | |
366 | else if (*temp) | |
367 | { | |
368 | t = localetrans (temp, tlen, &len); | |
369 | free (temp); | |
370 | if (lenp) | |
371 | *lenp = len; | |
372 | return (t); | |
373 | } | |
374 | else | |
375 | { | |
376 | if (lenp) | |
377 | *lenp = 0; | |
378 | return (temp); | |
379 | } | |
380 | } |