Commit | Line | Data |
---|---|---|
98994639 HS |
1 | /* locale.c |
2 | * | |
4bb101f2 | 3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
770526c1 | 4 | * 2000, 2001, 2002, 2003, 2005, 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 | /* | |
12 | * A Elbereth Gilthoniel, | |
13 | * silivren penna míriel | |
14 | * o menel aglar elenath! | |
15 | * Na-chaered palan-díriel | |
16 | * o galadhremmin ennorath, | |
17 | * Fanuilos, le linnathon | |
18 | * nef aear, si nef aearon! | |
19 | */ | |
20 | ||
166f8a29 DM |
21 | /* utility functions for handling locale-specific stuff like what |
22 | * character represents the decimal point. | |
23 | */ | |
24 | ||
98994639 HS |
25 | #include "EXTERN.h" |
26 | #define PERL_IN_LOCALE_C | |
27 | #include "perl.h" | |
28 | ||
29 | #ifdef I_LOCALE | |
30 | # include <locale.h> | |
31 | #endif | |
32 | ||
b310b053 JH |
33 | #ifdef I_LANGINFO |
34 | # include <langinfo.h> | |
35 | #endif | |
36 | ||
a4af207c JH |
37 | #include "reentr.h" |
38 | ||
27da23d5 | 39 | #if defined(USE_LOCALE_NUMERIC) || defined(USE_LOCALE_COLLATE) |
98994639 HS |
40 | /* |
41 | * Standardize the locale name from a string returned by 'setlocale'. | |
42 | * | |
43 | * The standard return value of setlocale() is either | |
44 | * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL | |
45 | * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL | |
46 | * (the space-separated values represent the various sublocales, | |
47 | * in some unspecificed order) | |
48 | * | |
49 | * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n", | |
50 | * which is harmful for further use of the string in setlocale(). | |
51 | * | |
52 | */ | |
53 | STATIC char * | |
54 | S_stdize_locale(pTHX_ char *locs) | |
55 | { | |
7452cf6a | 56 | const char * const s = strchr(locs, '='); |
98994639 HS |
57 | bool okay = TRUE; |
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 | } | |
27da23d5 | 78 | #endif |
98994639 HS |
79 | |
80 | void | |
81 | Perl_set_numeric_radix(pTHX) | |
82 | { | |
83 | #ifdef USE_LOCALE_NUMERIC | |
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); | |
90 | PL_numeric_radix_sv = Nullsv; | |
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 | |
100 | PL_numeric_radix_sv = Nullsv; | |
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 | |
112 | ||
113 | if (! newnum) { | |
43c5f42d NC |
114 | Safefree(PL_numeric_name); |
115 | PL_numeric_name = NULL; | |
98994639 HS |
116 | PL_numeric_standard = TRUE; |
117 | PL_numeric_local = TRUE; | |
118 | return; | |
119 | } | |
120 | ||
121 | if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) { | |
122 | Safefree(PL_numeric_name); | |
123 | PL_numeric_name = stdize_locale(savepv(newnum)); | |
770526c1 NC |
124 | PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0') |
125 | || strEQ(newnum, "POSIX")); | |
98994639 HS |
126 | PL_numeric_local = TRUE; |
127 | set_numeric_radix(); | |
128 | } | |
129 | ||
130 | #endif /* USE_LOCALE_NUMERIC */ | |
131 | } | |
132 | ||
133 | void | |
134 | Perl_set_numeric_standard(pTHX) | |
135 | { | |
136 | #ifdef USE_LOCALE_NUMERIC | |
137 | ||
138 | if (! PL_numeric_standard) { | |
139 | setlocale(LC_NUMERIC, "C"); | |
140 | PL_numeric_standard = TRUE; | |
141 | PL_numeric_local = FALSE; | |
142 | set_numeric_radix(); | |
143 | } | |
144 | ||
145 | #endif /* USE_LOCALE_NUMERIC */ | |
146 | } | |
147 | ||
148 | void | |
149 | Perl_set_numeric_local(pTHX) | |
150 | { | |
151 | #ifdef USE_LOCALE_NUMERIC | |
152 | ||
153 | if (! PL_numeric_local) { | |
154 | setlocale(LC_NUMERIC, PL_numeric_name); | |
155 | PL_numeric_standard = FALSE; | |
156 | PL_numeric_local = TRUE; | |
157 | set_numeric_radix(); | |
158 | } | |
159 | ||
160 | #endif /* USE_LOCALE_NUMERIC */ | |
161 | } | |
162 | ||
163 | /* | |
164 | * Set up for a new ctype locale. | |
165 | */ | |
166 | void | |
8772537c | 167 | Perl_new_ctype(pTHX_ const char *newctype) |
98994639 HS |
168 | { |
169 | #ifdef USE_LOCALE_CTYPE | |
27da23d5 | 170 | dVAR; |
98994639 HS |
171 | int i; |
172 | ||
173 | for (i = 0; i < 256; i++) { | |
174 | if (isUPPER_LC(i)) | |
175 | PL_fold_locale[i] = toLOWER_LC(i); | |
176 | else if (isLOWER_LC(i)) | |
177 | PL_fold_locale[i] = toUPPER_LC(i); | |
178 | else | |
179 | PL_fold_locale[i] = i; | |
180 | } | |
181 | ||
182 | #endif /* USE_LOCALE_CTYPE */ | |
8772537c | 183 | PERL_UNUSED_ARG(newctype); |
98994639 HS |
184 | } |
185 | ||
186 | /* | |
187 | * Set up for a new collation locale. | |
188 | */ | |
189 | void | |
8772537c | 190 | Perl_new_collate(pTHX_ const char *newcoll) |
98994639 HS |
191 | { |
192 | #ifdef USE_LOCALE_COLLATE | |
193 | ||
194 | if (! newcoll) { | |
195 | if (PL_collation_name) { | |
196 | ++PL_collation_ix; | |
197 | Safefree(PL_collation_name); | |
198 | PL_collation_name = NULL; | |
199 | } | |
200 | PL_collation_standard = TRUE; | |
201 | PL_collxfrm_base = 0; | |
202 | PL_collxfrm_mult = 2; | |
203 | return; | |
204 | } | |
205 | ||
206 | if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { | |
207 | ++PL_collation_ix; | |
208 | Safefree(PL_collation_name); | |
209 | PL_collation_name = stdize_locale(savepv(newcoll)); | |
770526c1 NC |
210 | PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') |
211 | || strEQ(newcoll, "POSIX")); | |
98994639 HS |
212 | |
213 | { | |
214 | /* 2: at most so many chars ('a', 'b'). */ | |
215 | /* 50: surely no system expands a char more. */ | |
216 | #define XFRMBUFSIZE (2 * 50) | |
217 | char xbuf[XFRMBUFSIZE]; | |
8772537c AL |
218 | const Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); |
219 | const Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); | |
220 | const SSize_t mult = fb - fa; | |
98994639 HS |
221 | if (mult < 1) |
222 | Perl_croak(aTHX_ "strxfrm() gets absurd"); | |
eb160463 | 223 | PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; |
98994639 HS |
224 | PL_collxfrm_mult = mult; |
225 | } | |
226 | } | |
227 | ||
228 | #endif /* USE_LOCALE_COLLATE */ | |
229 | } | |
230 | ||
231 | /* | |
232 | * Initialize locale awareness. | |
233 | */ | |
234 | int | |
235 | Perl_init_i18nl10n(pTHX_ int printwarn) | |
236 | { | |
237 | int ok = 1; | |
238 | /* returns | |
239 | * 1 = set ok or not applicable, | |
240 | * 0 = fallback to C locale, | |
241 | * -1 = fallback to C locale failed | |
242 | */ | |
243 | ||
244 | #if defined(USE_LOCALE) | |
245 | ||
246 | #ifdef USE_LOCALE_CTYPE | |
247 | char *curctype = NULL; | |
248 | #endif /* USE_LOCALE_CTYPE */ | |
249 | #ifdef USE_LOCALE_COLLATE | |
250 | char *curcoll = NULL; | |
251 | #endif /* USE_LOCALE_COLLATE */ | |
252 | #ifdef USE_LOCALE_NUMERIC | |
253 | char *curnum = NULL; | |
254 | #endif /* USE_LOCALE_NUMERIC */ | |
255 | #ifdef __GLIBC__ | |
7452cf6a | 256 | char * const language = PerlEnv_getenv("LANGUAGE"); |
98994639 | 257 | #endif |
7452cf6a AL |
258 | char * const lc_all = PerlEnv_getenv("LC_ALL"); |
259 | char * const lang = PerlEnv_getenv("LANG"); | |
98994639 HS |
260 | bool setlocale_failure = FALSE; |
261 | ||
262 | #ifdef LOCALE_ENVIRON_REQUIRED | |
263 | ||
264 | /* | |
265 | * Ultrix setlocale(..., "") fails if there are no environment | |
266 | * variables from which to get a locale name. | |
267 | */ | |
268 | ||
269 | bool done = FALSE; | |
270 | ||
271 | #ifdef LC_ALL | |
272 | if (lang) { | |
273 | if (setlocale(LC_ALL, "")) | |
274 | done = TRUE; | |
275 | else | |
276 | setlocale_failure = TRUE; | |
277 | } | |
278 | if (!setlocale_failure) { | |
279 | #ifdef USE_LOCALE_CTYPE | |
280 | if (! (curctype = | |
281 | setlocale(LC_CTYPE, | |
282 | (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) | |
283 | ? "" : Nullch))) | |
284 | setlocale_failure = TRUE; | |
285 | else | |
286 | curctype = savepv(curctype); | |
287 | #endif /* USE_LOCALE_CTYPE */ | |
288 | #ifdef USE_LOCALE_COLLATE | |
289 | if (! (curcoll = | |
290 | setlocale(LC_COLLATE, | |
291 | (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) | |
292 | ? "" : Nullch))) | |
293 | setlocale_failure = TRUE; | |
294 | else | |
295 | curcoll = savepv(curcoll); | |
296 | #endif /* USE_LOCALE_COLLATE */ | |
297 | #ifdef USE_LOCALE_NUMERIC | |
298 | if (! (curnum = | |
299 | setlocale(LC_NUMERIC, | |
300 | (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) | |
301 | ? "" : Nullch))) | |
302 | setlocale_failure = TRUE; | |
303 | else | |
304 | curnum = savepv(curnum); | |
305 | #endif /* USE_LOCALE_NUMERIC */ | |
306 | } | |
307 | ||
308 | #endif /* LC_ALL */ | |
309 | ||
310 | #endif /* !LOCALE_ENVIRON_REQUIRED */ | |
311 | ||
312 | #ifdef LC_ALL | |
313 | if (! setlocale(LC_ALL, "")) | |
314 | setlocale_failure = TRUE; | |
315 | #endif /* LC_ALL */ | |
316 | ||
317 | if (!setlocale_failure) { | |
318 | #ifdef USE_LOCALE_CTYPE | |
319 | if (! (curctype = setlocale(LC_CTYPE, ""))) | |
320 | setlocale_failure = TRUE; | |
321 | else | |
322 | curctype = savepv(curctype); | |
323 | #endif /* USE_LOCALE_CTYPE */ | |
324 | #ifdef USE_LOCALE_COLLATE | |
325 | if (! (curcoll = setlocale(LC_COLLATE, ""))) | |
326 | setlocale_failure = TRUE; | |
327 | else | |
328 | curcoll = savepv(curcoll); | |
329 | #endif /* USE_LOCALE_COLLATE */ | |
330 | #ifdef USE_LOCALE_NUMERIC | |
331 | if (! (curnum = setlocale(LC_NUMERIC, ""))) | |
332 | setlocale_failure = TRUE; | |
333 | else | |
334 | curnum = savepv(curnum); | |
335 | #endif /* USE_LOCALE_NUMERIC */ | |
336 | } | |
337 | ||
338 | if (setlocale_failure) { | |
339 | char *p; | |
0bd48802 | 340 | const bool locwarn = (printwarn > 1 || |
98994639 HS |
341 | (printwarn && |
342 | (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); | |
343 | ||
344 | if (locwarn) { | |
345 | #ifdef LC_ALL | |
346 | ||
347 | PerlIO_printf(Perl_error_log, | |
348 | "perl: warning: Setting locale failed.\n"); | |
349 | ||
350 | #else /* !LC_ALL */ | |
351 | ||
352 | PerlIO_printf(Perl_error_log, | |
353 | "perl: warning: Setting locale failed for the categories:\n\t"); | |
354 | #ifdef USE_LOCALE_CTYPE | |
355 | if (! curctype) | |
356 | PerlIO_printf(Perl_error_log, "LC_CTYPE "); | |
357 | #endif /* USE_LOCALE_CTYPE */ | |
358 | #ifdef USE_LOCALE_COLLATE | |
359 | if (! curcoll) | |
360 | PerlIO_printf(Perl_error_log, "LC_COLLATE "); | |
361 | #endif /* USE_LOCALE_COLLATE */ | |
362 | #ifdef USE_LOCALE_NUMERIC | |
363 | if (! curnum) | |
364 | PerlIO_printf(Perl_error_log, "LC_NUMERIC "); | |
365 | #endif /* USE_LOCALE_NUMERIC */ | |
366 | PerlIO_printf(Perl_error_log, "\n"); | |
367 | ||
368 | #endif /* LC_ALL */ | |
369 | ||
370 | PerlIO_printf(Perl_error_log, | |
371 | "perl: warning: Please check that your locale settings:\n"); | |
372 | ||
373 | #ifdef __GLIBC__ | |
374 | PerlIO_printf(Perl_error_log, | |
375 | "\tLANGUAGE = %c%s%c,\n", | |
376 | language ? '"' : '(', | |
377 | language ? language : "unset", | |
378 | language ? '"' : ')'); | |
379 | #endif | |
380 | ||
381 | PerlIO_printf(Perl_error_log, | |
382 | "\tLC_ALL = %c%s%c,\n", | |
383 | lc_all ? '"' : '(', | |
384 | lc_all ? lc_all : "unset", | |
385 | lc_all ? '"' : ')'); | |
386 | ||
387 | #if defined(USE_ENVIRON_ARRAY) | |
388 | { | |
389 | char **e; | |
390 | for (e = environ; *e; e++) { | |
391 | if (strnEQ(*e, "LC_", 3) | |
392 | && strnNE(*e, "LC_ALL=", 7) | |
393 | && (p = strchr(*e, '='))) | |
394 | PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", | |
395 | (int)(p - *e), *e, p + 1); | |
396 | } | |
397 | } | |
398 | #else | |
399 | PerlIO_printf(Perl_error_log, | |
400 | "\t(possibly more locale environment variables)\n"); | |
401 | #endif | |
402 | ||
403 | PerlIO_printf(Perl_error_log, | |
404 | "\tLANG = %c%s%c\n", | |
405 | lang ? '"' : '(', | |
406 | lang ? lang : "unset", | |
407 | lang ? '"' : ')'); | |
408 | ||
409 | PerlIO_printf(Perl_error_log, | |
410 | " are supported and installed on your system.\n"); | |
411 | } | |
412 | ||
413 | #ifdef LC_ALL | |
414 | ||
415 | if (setlocale(LC_ALL, "C")) { | |
416 | if (locwarn) | |
417 | PerlIO_printf(Perl_error_log, | |
418 | "perl: warning: Falling back to the standard locale (\"C\").\n"); | |
419 | ok = 0; | |
420 | } | |
421 | else { | |
422 | if (locwarn) | |
423 | PerlIO_printf(Perl_error_log, | |
424 | "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); | |
425 | ok = -1; | |
426 | } | |
427 | ||
428 | #else /* ! LC_ALL */ | |
429 | ||
430 | if (0 | |
431 | #ifdef USE_LOCALE_CTYPE | |
432 | || !(curctype || setlocale(LC_CTYPE, "C")) | |
433 | #endif /* USE_LOCALE_CTYPE */ | |
434 | #ifdef USE_LOCALE_COLLATE | |
435 | || !(curcoll || setlocale(LC_COLLATE, "C")) | |
436 | #endif /* USE_LOCALE_COLLATE */ | |
437 | #ifdef USE_LOCALE_NUMERIC | |
438 | || !(curnum || setlocale(LC_NUMERIC, "C")) | |
439 | #endif /* USE_LOCALE_NUMERIC */ | |
440 | ) | |
441 | { | |
442 | if (locwarn) | |
443 | PerlIO_printf(Perl_error_log, | |
444 | "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); | |
445 | ok = -1; | |
446 | } | |
447 | ||
448 | #endif /* ! LC_ALL */ | |
449 | ||
450 | #ifdef USE_LOCALE_CTYPE | |
451 | curctype = savepv(setlocale(LC_CTYPE, Nullch)); | |
452 | #endif /* USE_LOCALE_CTYPE */ | |
453 | #ifdef USE_LOCALE_COLLATE | |
454 | curcoll = savepv(setlocale(LC_COLLATE, Nullch)); | |
455 | #endif /* USE_LOCALE_COLLATE */ | |
456 | #ifdef USE_LOCALE_NUMERIC | |
457 | curnum = savepv(setlocale(LC_NUMERIC, Nullch)); | |
458 | #endif /* USE_LOCALE_NUMERIC */ | |
459 | } | |
460 | else { | |
461 | ||
462 | #ifdef USE_LOCALE_CTYPE | |
463 | new_ctype(curctype); | |
464 | #endif /* USE_LOCALE_CTYPE */ | |
465 | ||
466 | #ifdef USE_LOCALE_COLLATE | |
467 | new_collate(curcoll); | |
468 | #endif /* USE_LOCALE_COLLATE */ | |
469 | ||
470 | #ifdef USE_LOCALE_NUMERIC | |
471 | new_numeric(curnum); | |
472 | #endif /* USE_LOCALE_NUMERIC */ | |
b310b053 | 473 | |
98994639 HS |
474 | } |
475 | ||
476 | #endif /* USE_LOCALE */ | |
477 | ||
ec71e770 | 478 | #ifdef USE_PERLIO |
b310b053 | 479 | { |
fde18df1 | 480 | /* Set PL_utf8locale to TRUE if using PerlIO _and_ |
ec71e770 | 481 | any of the following are true: |
085a54d9 | 482 | - nl_langinfo(CODESET) contains /^utf-?8/i |
61de9fb5 | 483 | - $ENV{LC_ALL} contains /^utf-?8/i |
085a54d9 | 484 | - $ENV{LC_CTYPE} contains /^utf-?8/i |
61de9fb5 JH |
485 | - $ENV{LANG} contains /^utf-?8/i |
486 | The LC_ALL, LC_CTYPE, LANG obey the usual override | |
487 | hierarchy of locale environment variables. (LANGUAGE | |
488 | affects only LC_MESSAGES only under glibc.) (If present, | |
489 | it overrides LC_MESSAGES for GNU gettext, and it also | |
490 | can have more than one locale, separated by spaces, | |
491 | in case you need to know.) | |
8aa8f774 | 492 | If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) |
a05d7ebb | 493 | are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer |
fde18df1 | 494 | on STDIN, STDOUT, STDERR, _and_ the default open discipline. |
085a54d9 | 495 | */ |
fde18df1 | 496 | bool utf8locale = FALSE; |
b310b053 JH |
497 | char *codeset = NULL; |
498 | #if defined(HAS_NL_LANGINFO) && defined(CODESET) | |
499 | codeset = nl_langinfo(CODESET); | |
500 | #endif | |
61de9fb5 | 501 | if (codeset) |
fde18df1 JH |
502 | utf8locale = (ibcmp(codeset, "UTF-8", 5) == 0 || |
503 | ibcmp(codeset, "UTF8", 4) == 0); | |
077a72a9 | 504 | #if defined(USE_LOCALE) |
61de9fb5 JH |
505 | else { /* nl_langinfo(CODESET) is supposed to correctly |
506 | * interpret the locale environment variables, | |
507 | * but just in case it fails, let's do this manually. */ | |
508 | if (lang) | |
fde18df1 JH |
509 | utf8locale = (ibcmp(lang, "UTF-8", 5) == 0 || |
510 | ibcmp(lang, "UTF8", 4) == 0); | |
b310b053 | 511 | #ifdef USE_LOCALE_CTYPE |
61de9fb5 | 512 | if (curctype) |
fde18df1 JH |
513 | utf8locale = (ibcmp(curctype, "UTF-8", 5) == 0 || |
514 | ibcmp(curctype, "UTF8", 4) == 0); | |
b310b053 | 515 | #endif |
61de9fb5 | 516 | if (lc_all) |
fde18df1 JH |
517 | utf8locale = (ibcmp(lc_all, "UTF-8", 5) == 0 || |
518 | ibcmp(lc_all, "UTF8", 4) == 0); | |
61de9fb5 | 519 | } |
fde18df1 JH |
520 | #endif /* USE_LOCALE */ |
521 | if (utf8locale) | |
522 | PL_utf8locale = TRUE; | |
523 | } | |
a05d7ebb | 524 | /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. |
fde18df1 JH |
525 | This is an alternative to using the -C command line switch |
526 | (the -C if present will override this). */ | |
527 | { | |
dd374669 | 528 | const char *p = PerlEnv_getenv("PERL_UNICODE"); |
a05d7ebb | 529 | PL_unicode = p ? parse_unicode_opts(&p) : 0; |
b310b053 | 530 | } |
ec71e770 | 531 | #endif |
b310b053 | 532 | |
98994639 | 533 | #ifdef USE_LOCALE_CTYPE |
43c5f42d | 534 | Safefree(curctype); |
98994639 HS |
535 | #endif /* USE_LOCALE_CTYPE */ |
536 | #ifdef USE_LOCALE_COLLATE | |
43c5f42d | 537 | Safefree(curcoll); |
98994639 HS |
538 | #endif /* USE_LOCALE_COLLATE */ |
539 | #ifdef USE_LOCALE_NUMERIC | |
43c5f42d | 540 | Safefree(curnum); |
98994639 HS |
541 | #endif /* USE_LOCALE_NUMERIC */ |
542 | return ok; | |
543 | } | |
544 | ||
98994639 HS |
545 | #ifdef USE_LOCALE_COLLATE |
546 | ||
547 | /* | |
548 | * mem_collxfrm() is a bit like strxfrm() but with two important | |
549 | * differences. First, it handles embedded NULs. Second, it allocates | |
550 | * a bit more memory than needed for the transformed data itself. | |
551 | * The real transformed data begins at offset sizeof(collationix). | |
552 | * Please see sv_collxfrm() to see how this is used. | |
553 | */ | |
166f8a29 | 554 | |
98994639 HS |
555 | char * |
556 | Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) | |
557 | { | |
558 | char *xbuf; | |
559 | STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ | |
560 | ||
561 | /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ | |
562 | /* the +1 is for the terminating NUL. */ | |
563 | ||
564 | xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; | |
a02a5408 | 565 | Newx(xbuf, xAlloc, char); |
98994639 HS |
566 | if (! xbuf) |
567 | goto bad; | |
568 | ||
569 | *(U32*)xbuf = PL_collation_ix; | |
570 | xout = sizeof(PL_collation_ix); | |
571 | for (xin = 0; xin < len; ) { | |
572 | SSize_t xused; | |
573 | ||
574 | for (;;) { | |
575 | xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); | |
576 | if (xused == -1) | |
577 | goto bad; | |
eb160463 | 578 | if ((STRLEN)xused < xAlloc - xout) |
98994639 HS |
579 | break; |
580 | xAlloc = (2 * xAlloc) + 1; | |
581 | Renew(xbuf, xAlloc, char); | |
582 | if (! xbuf) | |
583 | goto bad; | |
584 | } | |
585 | ||
586 | xin += strlen(s + xin) + 1; | |
587 | xout += xused; | |
588 | ||
589 | /* Embedded NULs are understood but silently skipped | |
590 | * because they make no sense in locale collation. */ | |
591 | } | |
592 | ||
593 | xbuf[xout] = '\0'; | |
594 | *xlen = xout - sizeof(PL_collation_ix); | |
595 | return xbuf; | |
596 | ||
597 | bad: | |
598 | Safefree(xbuf); | |
599 | *xlen = 0; | |
600 | return NULL; | |
601 | } | |
602 | ||
603 | #endif /* USE_LOCALE_COLLATE */ | |
604 | ||
66610fdd RGS |
605 | /* |
606 | * Local variables: | |
607 | * c-indentation-style: bsd | |
608 | * c-basic-offset: 4 | |
609 | * indent-tabs-mode: t | |
610 | * End: | |
611 | * | |
37442d52 RGS |
612 | * ex: set ts=8 sts=4 sw=4 noet: |
613 | */ |