Commit | Line | Data |
---|---|---|
98994639 HS |
1 | /* locale.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4 | * 2002, 2003, 2005, 2006, 2007, 2008 by Larry Wall and others | |
98994639 HS |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
11 | /* | |
4ac71550 | 12 | * A Elbereth Gilthoniel, |
cdad3b53 | 13 | * silivren penna míriel |
4ac71550 | 14 | * o menel aglar elenath! |
cdad3b53 | 15 | * Na-chaered palan-díriel |
4ac71550 TC |
16 | * o galadhremmin ennorath, |
17 | * Fanuilos, le linnathon | |
18 | * nef aear, si nef aearon! | |
19 | * | |
20 | * [p.238 of _The Lord of the Rings_, II/i: "Many Meetings"] | |
98994639 HS |
21 | */ |
22 | ||
166f8a29 DM |
23 | /* utility functions for handling locale-specific stuff like what |
24 | * character represents the decimal point. | |
25 | */ | |
26 | ||
98994639 HS |
27 | #include "EXTERN.h" |
28 | #define PERL_IN_LOCALE_C | |
29 | #include "perl.h" | |
30 | ||
b310b053 JH |
31 | #ifdef I_LANGINFO |
32 | # include <langinfo.h> | |
33 | #endif | |
34 | ||
a4af207c JH |
35 | #include "reentr.h" |
36 | ||
98994639 HS |
37 | /* |
38 | * Standardize the locale name from a string returned by 'setlocale'. | |
39 | * | |
0ef2a2b2 | 40 | * The typical return value of setlocale() is either |
98994639 HS |
41 | * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL |
42 | * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL | |
43 | * (the space-separated values represent the various sublocales, | |
0ef2a2b2 | 44 | * in some unspecified order). This is not handled by this function. |
98994639 HS |
45 | * |
46 | * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n", | |
0ef2a2b2 KW |
47 | * which is harmful for further use of the string in setlocale(). This |
48 | * function removes the trailing new line and everything up through the '=' | |
98994639 HS |
49 | * |
50 | */ | |
51 | STATIC char * | |
52 | S_stdize_locale(pTHX_ char *locs) | |
53 | { | |
7452cf6a | 54 | const char * const s = strchr(locs, '='); |
98994639 HS |
55 | bool okay = TRUE; |
56 | ||
7918f24d NC |
57 | PERL_ARGS_ASSERT_STDIZE_LOCALE; |
58 | ||
8772537c AL |
59 | if (s) { |
60 | const char * const t = strchr(s, '.'); | |
98994639 | 61 | okay = FALSE; |
8772537c AL |
62 | if (t) { |
63 | const char * const u = strchr(t, '\n'); | |
64 | if (u && (u[1] == 0)) { | |
65 | const STRLEN len = u - s; | |
66 | Move(s + 1, locs, len, char); | |
67 | locs[len] = 0; | |
68 | okay = TRUE; | |
98994639 HS |
69 | } |
70 | } | |
71 | } | |
72 | ||
73 | if (!okay) | |
74 | Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs); | |
75 | ||
76 | return locs; | |
77 | } | |
78 | ||
79 | void | |
80 | Perl_set_numeric_radix(pTHX) | |
81 | { | |
82 | #ifdef USE_LOCALE_NUMERIC | |
97aff369 | 83 | dVAR; |
98994639 | 84 | # ifdef HAS_LOCALECONV |
7452cf6a | 85 | const struct lconv* const lc = localeconv(); |
98994639 | 86 | |
98994639 HS |
87 | if (lc && lc->decimal_point) { |
88 | if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) { | |
89 | SvREFCNT_dec(PL_numeric_radix_sv); | |
a0714e2c | 90 | PL_numeric_radix_sv = NULL; |
98994639 HS |
91 | } |
92 | else { | |
93 | if (PL_numeric_radix_sv) | |
94 | sv_setpv(PL_numeric_radix_sv, lc->decimal_point); | |
95 | else | |
96 | PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0); | |
97 | } | |
98 | } | |
99 | else | |
a0714e2c | 100 | PL_numeric_radix_sv = NULL; |
98994639 HS |
101 | # endif /* HAS_LOCALECONV */ |
102 | #endif /* USE_LOCALE_NUMERIC */ | |
103 | } | |
104 | ||
105 | /* | |
106 | * Set up for a new numeric locale. | |
107 | */ | |
108 | void | |
8772537c | 109 | Perl_new_numeric(pTHX_ const char *newnum) |
98994639 HS |
110 | { |
111 | #ifdef USE_LOCALE_NUMERIC | |
b03f34cf | 112 | char *save_newnum; |
97aff369 | 113 | dVAR; |
98994639 HS |
114 | |
115 | if (! newnum) { | |
43c5f42d NC |
116 | Safefree(PL_numeric_name); |
117 | PL_numeric_name = NULL; | |
98994639 HS |
118 | PL_numeric_standard = TRUE; |
119 | PL_numeric_local = TRUE; | |
120 | return; | |
121 | } | |
122 | ||
b03f34cf KW |
123 | save_newnum = stdize_locale(savepv(newnum)); |
124 | if (! PL_numeric_name || strNE(PL_numeric_name, save_newnum)) { | |
98994639 | 125 | Safefree(PL_numeric_name); |
b03f34cf KW |
126 | PL_numeric_name = save_newnum; |
127 | PL_numeric_standard = ((*save_newnum == 'C' && save_newnum[1] == '\0') | |
128 | || strEQ(save_newnum, "POSIX")); | |
98994639 HS |
129 | PL_numeric_local = TRUE; |
130 | set_numeric_radix(); | |
131 | } | |
b03f34cf KW |
132 | else { |
133 | Safefree(save_newnum); | |
134 | } | |
98994639 HS |
135 | |
136 | #endif /* USE_LOCALE_NUMERIC */ | |
137 | } | |
138 | ||
139 | void | |
140 | Perl_set_numeric_standard(pTHX) | |
141 | { | |
142 | #ifdef USE_LOCALE_NUMERIC | |
97aff369 | 143 | dVAR; |
98994639 HS |
144 | |
145 | if (! PL_numeric_standard) { | |
146 | setlocale(LC_NUMERIC, "C"); | |
147 | PL_numeric_standard = TRUE; | |
148 | PL_numeric_local = FALSE; | |
149 | set_numeric_radix(); | |
150 | } | |
151 | ||
152 | #endif /* USE_LOCALE_NUMERIC */ | |
153 | } | |
154 | ||
155 | void | |
156 | Perl_set_numeric_local(pTHX) | |
157 | { | |
158 | #ifdef USE_LOCALE_NUMERIC | |
97aff369 | 159 | dVAR; |
98994639 HS |
160 | |
161 | if (! PL_numeric_local) { | |
162 | setlocale(LC_NUMERIC, PL_numeric_name); | |
163 | PL_numeric_standard = FALSE; | |
164 | PL_numeric_local = TRUE; | |
165 | set_numeric_radix(); | |
166 | } | |
167 | ||
168 | #endif /* USE_LOCALE_NUMERIC */ | |
169 | } | |
170 | ||
171 | /* | |
172 | * Set up for a new ctype locale. | |
173 | */ | |
174 | void | |
8772537c | 175 | Perl_new_ctype(pTHX_ const char *newctype) |
98994639 HS |
176 | { |
177 | #ifdef USE_LOCALE_CTYPE | |
27da23d5 | 178 | dVAR; |
98994639 HS |
179 | int i; |
180 | ||
7918f24d NC |
181 | PERL_ARGS_ASSERT_NEW_CTYPE; |
182 | ||
98994639 HS |
183 | for (i = 0; i < 256; i++) { |
184 | if (isUPPER_LC(i)) | |
185 | PL_fold_locale[i] = toLOWER_LC(i); | |
186 | else if (isLOWER_LC(i)) | |
187 | PL_fold_locale[i] = toUPPER_LC(i); | |
188 | else | |
189 | PL_fold_locale[i] = i; | |
190 | } | |
191 | ||
192 | #endif /* USE_LOCALE_CTYPE */ | |
7918f24d | 193 | PERL_ARGS_ASSERT_NEW_CTYPE; |
8772537c | 194 | PERL_UNUSED_ARG(newctype); |
96a5add6 | 195 | PERL_UNUSED_CONTEXT; |
98994639 HS |
196 | } |
197 | ||
198 | /* | |
199 | * Set up for a new collation locale. | |
200 | */ | |
201 | void | |
8772537c | 202 | Perl_new_collate(pTHX_ const char *newcoll) |
98994639 HS |
203 | { |
204 | #ifdef USE_LOCALE_COLLATE | |
97aff369 | 205 | dVAR; |
98994639 HS |
206 | |
207 | if (! newcoll) { | |
208 | if (PL_collation_name) { | |
209 | ++PL_collation_ix; | |
210 | Safefree(PL_collation_name); | |
211 | PL_collation_name = NULL; | |
212 | } | |
213 | PL_collation_standard = TRUE; | |
214 | PL_collxfrm_base = 0; | |
215 | PL_collxfrm_mult = 2; | |
216 | return; | |
217 | } | |
218 | ||
219 | if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { | |
220 | ++PL_collation_ix; | |
221 | Safefree(PL_collation_name); | |
222 | PL_collation_name = stdize_locale(savepv(newcoll)); | |
770526c1 NC |
223 | PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') |
224 | || strEQ(newcoll, "POSIX")); | |
98994639 HS |
225 | |
226 | { | |
227 | /* 2: at most so many chars ('a', 'b'). */ | |
228 | /* 50: surely no system expands a char more. */ | |
229 | #define XFRMBUFSIZE (2 * 50) | |
230 | char xbuf[XFRMBUFSIZE]; | |
8772537c AL |
231 | const Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); |
232 | const Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); | |
233 | const SSize_t mult = fb - fa; | |
e0601d3c | 234 | if (mult < 1 && !(fa == 0 && fb == 0)) |
ad49ad39 NC |
235 | Perl_croak(aTHX_ "panic: strxfrm() gets absurd - a => %"UVuf", ab => %"UVuf, |
236 | (UV) fa, (UV) fb); | |
eb160463 | 237 | PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; |
98994639 HS |
238 | PL_collxfrm_mult = mult; |
239 | } | |
240 | } | |
241 | ||
242 | #endif /* USE_LOCALE_COLLATE */ | |
243 | } | |
244 | ||
245 | /* | |
246 | * Initialize locale awareness. | |
247 | */ | |
248 | int | |
249 | Perl_init_i18nl10n(pTHX_ int printwarn) | |
250 | { | |
251 | int ok = 1; | |
252 | /* returns | |
253 | * 1 = set ok or not applicable, | |
254 | * 0 = fallback to C locale, | |
255 | * -1 = fallback to C locale failed | |
256 | */ | |
257 | ||
258 | #if defined(USE_LOCALE) | |
97aff369 | 259 | dVAR; |
98994639 HS |
260 | |
261 | #ifdef USE_LOCALE_CTYPE | |
262 | char *curctype = NULL; | |
263 | #endif /* USE_LOCALE_CTYPE */ | |
264 | #ifdef USE_LOCALE_COLLATE | |
265 | char *curcoll = NULL; | |
266 | #endif /* USE_LOCALE_COLLATE */ | |
267 | #ifdef USE_LOCALE_NUMERIC | |
268 | char *curnum = NULL; | |
269 | #endif /* USE_LOCALE_NUMERIC */ | |
270 | #ifdef __GLIBC__ | |
7452cf6a | 271 | char * const language = PerlEnv_getenv("LANGUAGE"); |
98994639 | 272 | #endif |
7452cf6a AL |
273 | char * const lc_all = PerlEnv_getenv("LC_ALL"); |
274 | char * const lang = PerlEnv_getenv("LANG"); | |
98994639 HS |
275 | bool setlocale_failure = FALSE; |
276 | ||
277 | #ifdef LOCALE_ENVIRON_REQUIRED | |
278 | ||
279 | /* | |
280 | * Ultrix setlocale(..., "") fails if there are no environment | |
281 | * variables from which to get a locale name. | |
282 | */ | |
283 | ||
284 | bool done = FALSE; | |
285 | ||
b3e384bf | 286 | # ifdef LC_ALL |
98994639 HS |
287 | if (lang) { |
288 | if (setlocale(LC_ALL, "")) | |
289 | done = TRUE; | |
290 | else | |
291 | setlocale_failure = TRUE; | |
292 | } | |
293 | if (!setlocale_failure) { | |
b3e384bf | 294 | # ifdef USE_LOCALE_CTYPE |
56279a21 | 295 | Safefree(curctype); |
98994639 HS |
296 | if (! (curctype = |
297 | setlocale(LC_CTYPE, | |
298 | (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) | |
bd61b366 | 299 | ? "" : NULL))) |
98994639 HS |
300 | setlocale_failure = TRUE; |
301 | else | |
302 | curctype = savepv(curctype); | |
b3e384bf KW |
303 | # endif /* USE_LOCALE_CTYPE */ |
304 | # ifdef USE_LOCALE_COLLATE | |
56279a21 | 305 | Safefree(curcoll); |
98994639 HS |
306 | if (! (curcoll = |
307 | setlocale(LC_COLLATE, | |
308 | (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) | |
bd61b366 | 309 | ? "" : NULL))) |
98994639 HS |
310 | setlocale_failure = TRUE; |
311 | else | |
312 | curcoll = savepv(curcoll); | |
b3e384bf KW |
313 | # endif /* USE_LOCALE_COLLATE */ |
314 | # ifdef USE_LOCALE_NUMERIC | |
56279a21 | 315 | Safefree(curnum); |
98994639 HS |
316 | if (! (curnum = |
317 | setlocale(LC_NUMERIC, | |
318 | (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) | |
bd61b366 | 319 | ? "" : NULL))) |
98994639 HS |
320 | setlocale_failure = TRUE; |
321 | else | |
322 | curnum = savepv(curnum); | |
b3e384bf | 323 | # endif /* USE_LOCALE_NUMERIC */ |
98994639 HS |
324 | } |
325 | ||
b3e384bf | 326 | # endif /* LC_ALL */ |
98994639 HS |
327 | |
328 | #endif /* !LOCALE_ENVIRON_REQUIRED */ | |
329 | ||
330 | #ifdef LC_ALL | |
331 | if (! setlocale(LC_ALL, "")) | |
332 | setlocale_failure = TRUE; | |
333 | #endif /* LC_ALL */ | |
334 | ||
335 | if (!setlocale_failure) { | |
336 | #ifdef USE_LOCALE_CTYPE | |
6cb43dbf | 337 | Safefree(curctype); |
98994639 HS |
338 | if (! (curctype = setlocale(LC_CTYPE, ""))) |
339 | setlocale_failure = TRUE; | |
340 | else | |
341 | curctype = savepv(curctype); | |
342 | #endif /* USE_LOCALE_CTYPE */ | |
343 | #ifdef USE_LOCALE_COLLATE | |
6cb43dbf | 344 | Safefree(curcoll); |
98994639 HS |
345 | if (! (curcoll = setlocale(LC_COLLATE, ""))) |
346 | setlocale_failure = TRUE; | |
347 | else | |
348 | curcoll = savepv(curcoll); | |
349 | #endif /* USE_LOCALE_COLLATE */ | |
350 | #ifdef USE_LOCALE_NUMERIC | |
6cb43dbf | 351 | Safefree(curnum); |
98994639 HS |
352 | if (! (curnum = setlocale(LC_NUMERIC, ""))) |
353 | setlocale_failure = TRUE; | |
354 | else | |
355 | curnum = savepv(curnum); | |
356 | #endif /* USE_LOCALE_NUMERIC */ | |
357 | } | |
358 | ||
359 | if (setlocale_failure) { | |
360 | char *p; | |
0bd48802 | 361 | const bool locwarn = (printwarn > 1 || |
98994639 HS |
362 | (printwarn && |
363 | (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); | |
364 | ||
365 | if (locwarn) { | |
366 | #ifdef LC_ALL | |
367 | ||
368 | PerlIO_printf(Perl_error_log, | |
369 | "perl: warning: Setting locale failed.\n"); | |
370 | ||
371 | #else /* !LC_ALL */ | |
372 | ||
373 | PerlIO_printf(Perl_error_log, | |
374 | "perl: warning: Setting locale failed for the categories:\n\t"); | |
375 | #ifdef USE_LOCALE_CTYPE | |
376 | if (! curctype) | |
377 | PerlIO_printf(Perl_error_log, "LC_CTYPE "); | |
378 | #endif /* USE_LOCALE_CTYPE */ | |
379 | #ifdef USE_LOCALE_COLLATE | |
380 | if (! curcoll) | |
381 | PerlIO_printf(Perl_error_log, "LC_COLLATE "); | |
382 | #endif /* USE_LOCALE_COLLATE */ | |
383 | #ifdef USE_LOCALE_NUMERIC | |
384 | if (! curnum) | |
385 | PerlIO_printf(Perl_error_log, "LC_NUMERIC "); | |
386 | #endif /* USE_LOCALE_NUMERIC */ | |
387 | PerlIO_printf(Perl_error_log, "\n"); | |
388 | ||
389 | #endif /* LC_ALL */ | |
390 | ||
391 | PerlIO_printf(Perl_error_log, | |
392 | "perl: warning: Please check that your locale settings:\n"); | |
393 | ||
394 | #ifdef __GLIBC__ | |
395 | PerlIO_printf(Perl_error_log, | |
396 | "\tLANGUAGE = %c%s%c,\n", | |
397 | language ? '"' : '(', | |
398 | language ? language : "unset", | |
399 | language ? '"' : ')'); | |
400 | #endif | |
401 | ||
402 | PerlIO_printf(Perl_error_log, | |
403 | "\tLC_ALL = %c%s%c,\n", | |
404 | lc_all ? '"' : '(', | |
405 | lc_all ? lc_all : "unset", | |
406 | lc_all ? '"' : ')'); | |
407 | ||
408 | #if defined(USE_ENVIRON_ARRAY) | |
409 | { | |
410 | char **e; | |
411 | for (e = environ; *e; e++) { | |
412 | if (strnEQ(*e, "LC_", 3) | |
413 | && strnNE(*e, "LC_ALL=", 7) | |
414 | && (p = strchr(*e, '='))) | |
415 | PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", | |
416 | (int)(p - *e), *e, p + 1); | |
417 | } | |
418 | } | |
419 | #else | |
420 | PerlIO_printf(Perl_error_log, | |
421 | "\t(possibly more locale environment variables)\n"); | |
422 | #endif | |
423 | ||
424 | PerlIO_printf(Perl_error_log, | |
425 | "\tLANG = %c%s%c\n", | |
426 | lang ? '"' : '(', | |
427 | lang ? lang : "unset", | |
428 | lang ? '"' : ')'); | |
429 | ||
430 | PerlIO_printf(Perl_error_log, | |
431 | " are supported and installed on your system.\n"); | |
432 | } | |
433 | ||
434 | #ifdef LC_ALL | |
435 | ||
436 | if (setlocale(LC_ALL, "C")) { | |
437 | if (locwarn) | |
438 | PerlIO_printf(Perl_error_log, | |
439 | "perl: warning: Falling back to the standard locale (\"C\").\n"); | |
440 | ok = 0; | |
441 | } | |
442 | else { | |
443 | if (locwarn) | |
444 | PerlIO_printf(Perl_error_log, | |
445 | "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); | |
446 | ok = -1; | |
447 | } | |
448 | ||
449 | #else /* ! LC_ALL */ | |
450 | ||
451 | if (0 | |
452 | #ifdef USE_LOCALE_CTYPE | |
453 | || !(curctype || setlocale(LC_CTYPE, "C")) | |
454 | #endif /* USE_LOCALE_CTYPE */ | |
455 | #ifdef USE_LOCALE_COLLATE | |
456 | || !(curcoll || setlocale(LC_COLLATE, "C")) | |
457 | #endif /* USE_LOCALE_COLLATE */ | |
458 | #ifdef USE_LOCALE_NUMERIC | |
459 | || !(curnum || setlocale(LC_NUMERIC, "C")) | |
460 | #endif /* USE_LOCALE_NUMERIC */ | |
461 | ) | |
462 | { | |
463 | if (locwarn) | |
464 | PerlIO_printf(Perl_error_log, | |
465 | "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); | |
466 | ok = -1; | |
467 | } | |
468 | ||
469 | #endif /* ! LC_ALL */ | |
470 | ||
471 | #ifdef USE_LOCALE_CTYPE | |
56279a21 | 472 | Safefree(curctype); |
bd61b366 | 473 | curctype = savepv(setlocale(LC_CTYPE, NULL)); |
98994639 HS |
474 | #endif /* USE_LOCALE_CTYPE */ |
475 | #ifdef USE_LOCALE_COLLATE | |
56279a21 | 476 | Safefree(curcoll); |
bd61b366 | 477 | curcoll = savepv(setlocale(LC_COLLATE, NULL)); |
98994639 HS |
478 | #endif /* USE_LOCALE_COLLATE */ |
479 | #ifdef USE_LOCALE_NUMERIC | |
56279a21 | 480 | Safefree(curnum); |
bd61b366 | 481 | curnum = savepv(setlocale(LC_NUMERIC, NULL)); |
98994639 HS |
482 | #endif /* USE_LOCALE_NUMERIC */ |
483 | } | |
484 | else { | |
485 | ||
486 | #ifdef USE_LOCALE_CTYPE | |
487 | new_ctype(curctype); | |
488 | #endif /* USE_LOCALE_CTYPE */ | |
489 | ||
490 | #ifdef USE_LOCALE_COLLATE | |
491 | new_collate(curcoll); | |
492 | #endif /* USE_LOCALE_COLLATE */ | |
493 | ||
494 | #ifdef USE_LOCALE_NUMERIC | |
495 | new_numeric(curnum); | |
496 | #endif /* USE_LOCALE_NUMERIC */ | |
b310b053 | 497 | |
98994639 HS |
498 | } |
499 | ||
500 | #endif /* USE_LOCALE */ | |
501 | ||
ec71e770 | 502 | #ifdef USE_PERLIO |
b310b053 | 503 | { |
fde18df1 | 504 | /* Set PL_utf8locale to TRUE if using PerlIO _and_ |
7d74bb61 | 505 | the current LC_CTYPE locale is UTF-8. |
8aa8f774 | 506 | If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) |
a05d7ebb | 507 | are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer |
fde18df1 | 508 | on STDIN, STDOUT, STDERR, _and_ the default open discipline. |
085a54d9 | 509 | */ |
7d74bb61 | 510 | PL_utf8locale = is_cur_LC_category_utf8(LC_CTYPE); |
fde18df1 | 511 | } |
a05d7ebb | 512 | /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. |
fde18df1 JH |
513 | This is an alternative to using the -C command line switch |
514 | (the -C if present will override this). */ | |
515 | { | |
dd374669 | 516 | const char *p = PerlEnv_getenv("PERL_UNICODE"); |
a05d7ebb | 517 | PL_unicode = p ? parse_unicode_opts(&p) : 0; |
5a22a2bb NC |
518 | if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG) |
519 | PL_utf8cache = -1; | |
b310b053 | 520 | } |
ec71e770 | 521 | #endif |
b310b053 | 522 | |
98994639 | 523 | #ifdef USE_LOCALE_CTYPE |
43c5f42d | 524 | Safefree(curctype); |
98994639 HS |
525 | #endif /* USE_LOCALE_CTYPE */ |
526 | #ifdef USE_LOCALE_COLLATE | |
43c5f42d | 527 | Safefree(curcoll); |
98994639 HS |
528 | #endif /* USE_LOCALE_COLLATE */ |
529 | #ifdef USE_LOCALE_NUMERIC | |
43c5f42d | 530 | Safefree(curnum); |
98994639 HS |
531 | #endif /* USE_LOCALE_NUMERIC */ |
532 | return ok; | |
533 | } | |
534 | ||
98994639 HS |
535 | #ifdef USE_LOCALE_COLLATE |
536 | ||
537 | /* | |
538 | * mem_collxfrm() is a bit like strxfrm() but with two important | |
539 | * differences. First, it handles embedded NULs. Second, it allocates | |
540 | * a bit more memory than needed for the transformed data itself. | |
541 | * The real transformed data begins at offset sizeof(collationix). | |
542 | * Please see sv_collxfrm() to see how this is used. | |
543 | */ | |
166f8a29 | 544 | |
98994639 HS |
545 | char * |
546 | Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) | |
547 | { | |
97aff369 | 548 | dVAR; |
98994639 HS |
549 | char *xbuf; |
550 | STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ | |
551 | ||
7918f24d NC |
552 | PERL_ARGS_ASSERT_MEM_COLLXFRM; |
553 | ||
98994639 HS |
554 | /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ |
555 | /* the +1 is for the terminating NUL. */ | |
556 | ||
557 | xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; | |
a02a5408 | 558 | Newx(xbuf, xAlloc, char); |
98994639 HS |
559 | if (! xbuf) |
560 | goto bad; | |
561 | ||
562 | *(U32*)xbuf = PL_collation_ix; | |
563 | xout = sizeof(PL_collation_ix); | |
564 | for (xin = 0; xin < len; ) { | |
224e8ef5 | 565 | Size_t xused; |
98994639 HS |
566 | |
567 | for (;;) { | |
568 | xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); | |
224e8ef5 | 569 | if (xused >= PERL_INT_MAX) |
98994639 | 570 | goto bad; |
eb160463 | 571 | if ((STRLEN)xused < xAlloc - xout) |
98994639 HS |
572 | break; |
573 | xAlloc = (2 * xAlloc) + 1; | |
574 | Renew(xbuf, xAlloc, char); | |
575 | if (! xbuf) | |
576 | goto bad; | |
577 | } | |
578 | ||
579 | xin += strlen(s + xin) + 1; | |
580 | xout += xused; | |
581 | ||
582 | /* Embedded NULs are understood but silently skipped | |
583 | * because they make no sense in locale collation. */ | |
584 | } | |
585 | ||
586 | xbuf[xout] = '\0'; | |
587 | *xlen = xout - sizeof(PL_collation_ix); | |
588 | return xbuf; | |
589 | ||
590 | bad: | |
591 | Safefree(xbuf); | |
592 | *xlen = 0; | |
593 | return NULL; | |
594 | } | |
595 | ||
596 | #endif /* USE_LOCALE_COLLATE */ | |
597 | ||
7d74bb61 KW |
598 | bool |
599 | S_is_cur_LC_category_utf8(pTHX_ int category) | |
600 | { | |
601 | /* Returns TRUE if the current locale for 'category' is UTF-8; FALSE | |
602 | * otherwise. 'category' may not be LC_ALL. If the platform doesn't have | |
603 | * nl_langinfo(), this employs a heuristic, which hence could give the | |
604 | * wrong result. It errs on the side of not being a UTF-8 locale. */ | |
605 | ||
606 | char *save_input_locale = NULL; | |
607 | int has_hyphen; | |
608 | STRLEN final_pos; | |
609 | ||
610 | assert(category != LC_ALL); | |
611 | ||
612 | /* First dispose of the trivial cases */ | |
613 | save_input_locale = stdize_locale(setlocale(category, NULL)); | |
614 | if (! save_input_locale) { | |
615 | return FALSE; /* XXX maybe should croak */ | |
616 | } | |
617 | if ((*save_input_locale == 'C' && save_input_locale[1] == '\0') | |
618 | || strEQ(save_input_locale, "POSIX")) | |
619 | { | |
620 | return FALSE; | |
621 | } | |
622 | ||
623 | save_input_locale = savepv(save_input_locale); | |
624 | ||
625 | #if defined(HAS_NL_LANGINFO) && defined(CODESET) && defined(USE_LOCALE_CTYPE) | |
626 | ||
627 | { /* Next try nl_langinfo if available */ | |
628 | ||
629 | char *save_ctype_locale = NULL; | |
630 | char *codeset = NULL; | |
631 | ||
632 | if (category != LC_CTYPE) { /* nl_langinfo works only on LC_CTYPE */ | |
633 | ||
634 | /* Get the current LC_CTYPE locale */ | |
635 | save_ctype_locale = stdize_locale(savepv(setlocale(LC_CTYPE, NULL))); | |
636 | if (! save_ctype_locale) { | |
637 | goto cant_use_nllanginfo; | |
638 | } | |
639 | ||
640 | /* If LC_CTYPE and the desired category use the same locale, this | |
641 | * means that finding the value for LC_CTYPE is the same as finding | |
642 | * the value for the desired category. Otherwise, switch LC_CTYPE | |
643 | * to the desired category's locale */ | |
644 | if (strEQ(save_ctype_locale, save_input_locale)) { | |
645 | Safefree(save_ctype_locale); | |
646 | save_ctype_locale = NULL; | |
647 | } | |
648 | else if (! setlocale(LC_CTYPE, save_input_locale)) { | |
649 | Safefree(save_ctype_locale); | |
650 | goto cant_use_nllanginfo; | |
651 | } | |
652 | } | |
653 | ||
654 | /* Here the current LC_CTYPE is set to the locale of the category whose | |
655 | * information is desired. This means that nl_langinfo() should give | |
656 | * the correct results */ | |
657 | codeset = savepv(nl_langinfo(CODESET)); | |
658 | if (codeset) { | |
659 | bool is_utf8; | |
660 | ||
661 | /* If we switched LC_CTYPE, switch back */ | |
662 | if (save_ctype_locale) { | |
663 | setlocale(LC_CTYPE, save_ctype_locale); | |
664 | Safefree(save_ctype_locale); | |
665 | } | |
666 | ||
667 | is_utf8 = foldEQ(codeset, STR_WITH_LEN("UTF-8")) | |
668 | || foldEQ(codeset, STR_WITH_LEN("UTF8")); | |
669 | ||
670 | Safefree(codeset); | |
671 | Safefree(save_input_locale); | |
672 | return is_utf8; | |
673 | } | |
674 | ||
675 | } | |
676 | cant_use_nllanginfo: | |
677 | ||
678 | #endif /* HAS_NL_LANGINFO etc */ | |
679 | ||
680 | /* nl_langinfo not available or failed somehow. Look at the locale name to | |
681 | * see if it matches qr/UTF -? 8 $ /ix */ | |
682 | ||
683 | final_pos = strlen(save_input_locale) - 1; | |
684 | if (final_pos >= 3 | |
685 | && *(save_input_locale + final_pos) == '8') | |
686 | { | |
687 | has_hyphen = *(save_input_locale + final_pos - 1 ) == '-'; | |
688 | if ((! has_hyphen || final_pos >= 4) | |
689 | && toFOLD(*(save_input_locale + final_pos - has_hyphen - 1)) == 'f' | |
690 | && toFOLD(*(save_input_locale + final_pos - has_hyphen - 2)) == 't' | |
691 | && toFOLD(*(save_input_locale + final_pos - has_hyphen - 3)) == 'u') | |
692 | { | |
693 | Safefree(save_input_locale); | |
694 | return TRUE; | |
695 | } | |
696 | } | |
697 | ||
698 | #ifdef WIN32 | |
699 | /* http://msdn.microsoft.com/en-us/library/windows/desktop/dd317756.aspx */ | |
700 | if (final_pos >= 4 | |
701 | && *(save_input_locale + final_pos - 0) == '1' | |
702 | && *(save_input_locale + final_pos - 1) == '0' | |
703 | && *(save_input_locale + final_pos - 2) == '0' | |
704 | && *(save_input_locale + final_pos - 3) == '5' | |
705 | && *(save_input_locale + final_pos - 4) == '6') | |
706 | { | |
707 | Safefree(save_input_locale); | |
708 | return TRUE; | |
709 | } | |
710 | #endif | |
711 | ||
fa9b773e KW |
712 | /* Other common encodings are the ISO 8859 series, which aren't UTF-8 */ |
713 | if (instr(save_input_locale, "8859")) { | |
714 | Safefree(save_input_locale); | |
715 | return FALSE; | |
716 | } | |
717 | ||
718 | #ifdef HAS_LOCALECONV | |
719 | ||
720 | # ifdef USE_LOCALE_MONETARY | |
721 | ||
722 | /* Here, there is nothing in the locale name to indicate whether the locale | |
723 | * is UTF-8 or not. This "name", the return of setlocale(), is actually | |
724 | * defined to be opaque, so we can't really rely on the absence of various | |
725 | * substrings in the name to indicate its UTF-8ness. Look at the locale's | |
726 | * currency symbol. Often that will be in the native script, and if the | |
727 | * symbol isn't in UTF-8, we know that the locale isn't. If it is | |
728 | * non-ASCII UTF-8, we infer that the locale is too. | |
729 | * To do this, like above for LC_CTYPE, we first set LC_MONETARY to the | |
730 | * locale of the desired category, if it isn't that locale already */ | |
731 | ||
732 | { | |
733 | char *save_monetary_locale = NULL; | |
734 | bool illegal_utf8 = FALSE; | |
735 | bool only_ascii = FALSE; | |
736 | const struct lconv* const lc = localeconv(); | |
737 | ||
738 | if (category != LC_MONETARY) { | |
739 | ||
740 | save_monetary_locale = stdize_locale(savepv(setlocale(LC_MONETARY, | |
741 | NULL))); | |
742 | if (! save_monetary_locale) { | |
743 | goto cant_use_monetary; | |
744 | } | |
745 | ||
746 | if (strNE(save_monetary_locale, save_input_locale)) { | |
747 | if (! setlocale(LC_MONETARY, save_input_locale)) { | |
748 | Safefree(save_monetary_locale); | |
749 | goto cant_use_monetary; | |
750 | } | |
751 | } | |
752 | } | |
753 | ||
754 | /* Here the current LC_MONETARY is set to the locale of the category | |
755 | * whose information is desired. */ | |
756 | ||
757 | if (lc && lc->currency_symbol) { | |
758 | if (! is_utf8_string((U8 *) lc->currency_symbol, 0)) { | |
759 | illegal_utf8 = TRUE; | |
760 | } | |
761 | else if (is_ascii_string((U8 *) lc->currency_symbol, 0)) { | |
762 | only_ascii = TRUE; | |
763 | } | |
764 | } | |
765 | ||
766 | /* If we changed it, restore LC_MONETARY to its original locale */ | |
767 | if (save_monetary_locale) { | |
768 | setlocale(LC_MONETARY, save_monetary_locale); | |
769 | Safefree(save_monetary_locale); | |
770 | } | |
771 | ||
772 | Safefree(save_input_locale); | |
773 | ||
774 | /* It isn't a UTF-8 locale if the symbol is not legal UTF-8; otherwise | |
775 | * assume the locale is UTF-8 if and only if the symbol is non-ascii | |
776 | * UTF-8. (We can't really tell if the locale is UTF-8 or not if the | |
777 | * symbol is just a '$', so we err on the side of it not being UTF-8) | |
778 | * */ | |
779 | return (illegal_utf8) | |
780 | ? FALSE | |
781 | : ! only_ascii; | |
782 | ||
783 | } | |
784 | cant_use_monetary: | |
785 | ||
786 | # endif /* USE_LOCALE_MONETARY */ | |
787 | #endif /* HAS_LOCALECONV */ | |
788 | ||
789 | #if 0 && defined(HAS_STRERROR) && defined(USE_LOCALE_MESSAGES) | |
790 | ||
791 | /* This code is ifdefd out because it was found to not be necessary in testing | |
792 | * on our dromedary test machine, which has over 700 locales. There, looking | |
793 | * at just the currency symbol gave essentially the same results as doing this | |
794 | * extra work. Executing this also caused segfaults in miniperl. I left it in | |
795 | * so as to avoid rewriting it if real-world experience indicates that | |
796 | * dromedary is an outlier. Essentially, instead of returning abpve if we | |
797 | * haven't found illegal utf8, we continue on and examine all the strerror() | |
798 | * messages on the platform for utf8ness. If all are ASCII, we still don't | |
799 | * know the answer; but otherwise we have a pretty good indication of the | |
800 | * utf8ness. The reason this doesn't necessarily help much is that the | |
801 | * messages may not have been translated into the locale. The currency symbol | |
802 | * is much more likely to have been translated. The code below would need to | |
803 | * be altered somewhat to just be a continuation of testing the currency | |
804 | * symbol. */ | |
805 | int e; | |
806 | unsigned int failures = 0, non_ascii = 0; | |
807 | char *save_messages_locale = NULL; | |
808 | ||
809 | /* Like above for LC_CTYPE, we set LC_MESSAGES to the locale of the | |
810 | * desired category, if it isn't that locale already */ | |
811 | ||
812 | if (category != LC_MESSAGES) { | |
813 | ||
814 | save_messages_locale = stdize_locale(savepv(setlocale(LC_MESSAGES, | |
815 | NULL))); | |
816 | if (! save_messages_locale) { | |
817 | goto cant_use_messages; | |
818 | } | |
819 | ||
820 | if (strEQ(save_messages_locale, save_input_locale)) { | |
821 | Safefree(save_input_locale); | |
822 | } | |
823 | else if (! setlocale(LC_MESSAGES, save_input_locale)) { | |
824 | Safefree(save_messages_locale); | |
825 | goto cant_use_messages; | |
826 | } | |
827 | } | |
828 | ||
829 | /* Here the current LC_MESSAGES is set to the locale of the category | |
830 | * whose information is desired. Look through all the messages */ | |
831 | ||
832 | for (e = 0; | |
833 | #ifdef HAS_SYS_ERRLIST | |
834 | e <= sys_nerr | |
835 | #endif | |
836 | ; e++) | |
837 | { | |
838 | const U8* const errmsg = (U8 *) Strerror(e) ; | |
839 | if (!errmsg) | |
840 | break; | |
841 | if (! is_utf8_string(errmsg, 0)) { | |
842 | failures++; | |
843 | break; | |
844 | } | |
845 | else if (! is_ascii_string(errmsg, 0)) { | |
846 | non_ascii++; | |
847 | } | |
848 | } | |
849 | ||
850 | /* And, if we changed it, restore LC_MESSAGES to its original locale */ | |
851 | if (save_messages_locale) { | |
852 | setlocale(LC_MESSAGES, save_messages_locale); | |
853 | Safefree(save_messages_locale); | |
854 | } | |
855 | ||
856 | /* Any non-UTF-8 message means not a UTF-8 locale; if all are valid, | |
857 | * any non-ascii means it is one; otherwise we assume it isn't */ | |
858 | return (failures) ? FALSE : non_ascii; | |
859 | ||
860 | } | |
861 | cant_use_messages: | |
862 | ||
863 | #endif | |
864 | ||
865 | Safefree(save_input_locale); | |
7d74bb61 KW |
866 | return FALSE; |
867 | } | |
868 | ||
869 | ||
870 | ||
66610fdd RGS |
871 | /* |
872 | * Local variables: | |
873 | * c-indentation-style: bsd | |
874 | * c-basic-offset: 4 | |
14d04a33 | 875 | * indent-tabs-mode: nil |
66610fdd RGS |
876 | * End: |
877 | * | |
14d04a33 | 878 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 879 | */ |