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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 | { | |
8772537c | 56 | const char *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 | |
85 | struct lconv* lc; | |
86 | ||
87 | lc = localeconv(); | |
88 | if (lc && lc->decimal_point) { | |
89 | if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) { | |
90 | SvREFCNT_dec(PL_numeric_radix_sv); | |
91 | PL_numeric_radix_sv = Nullsv; | |
92 | } | |
93 | else { | |
94 | if (PL_numeric_radix_sv) | |
95 | sv_setpv(PL_numeric_radix_sv, lc->decimal_point); | |
96 | else | |
97 | PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0); | |
98 | } | |
99 | } | |
100 | else | |
101 | PL_numeric_radix_sv = Nullsv; | |
102 | # endif /* HAS_LOCALECONV */ | |
103 | #endif /* USE_LOCALE_NUMERIC */ | |
104 | } | |
105 | ||
106 | /* | |
107 | * Set up for a new numeric locale. | |
108 | */ | |
109 | void | |
8772537c | 110 | Perl_new_numeric(pTHX_ const char *newnum) |
98994639 HS |
111 | { |
112 | #ifdef USE_LOCALE_NUMERIC | |
113 | ||
114 | if (! newnum) { | |
43c5f42d NC |
115 | Safefree(PL_numeric_name); |
116 | PL_numeric_name = NULL; | |
98994639 HS |
117 | PL_numeric_standard = TRUE; |
118 | PL_numeric_local = TRUE; | |
119 | return; | |
120 | } | |
121 | ||
122 | if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) { | |
123 | Safefree(PL_numeric_name); | |
124 | PL_numeric_name = stdize_locale(savepv(newnum)); | |
770526c1 NC |
125 | PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0') |
126 | || strEQ(newnum, "POSIX")); | |
98994639 HS |
127 | PL_numeric_local = TRUE; |
128 | set_numeric_radix(); | |
129 | } | |
130 | ||
131 | #endif /* USE_LOCALE_NUMERIC */ | |
132 | } | |
133 | ||
134 | void | |
135 | Perl_set_numeric_standard(pTHX) | |
136 | { | |
137 | #ifdef USE_LOCALE_NUMERIC | |
138 | ||
139 | if (! PL_numeric_standard) { | |
140 | setlocale(LC_NUMERIC, "C"); | |
141 | PL_numeric_standard = TRUE; | |
142 | PL_numeric_local = FALSE; | |
143 | set_numeric_radix(); | |
144 | } | |
145 | ||
146 | #endif /* USE_LOCALE_NUMERIC */ | |
147 | } | |
148 | ||
149 | void | |
150 | Perl_set_numeric_local(pTHX) | |
151 | { | |
152 | #ifdef USE_LOCALE_NUMERIC | |
153 | ||
154 | if (! PL_numeric_local) { | |
155 | setlocale(LC_NUMERIC, PL_numeric_name); | |
156 | PL_numeric_standard = FALSE; | |
157 | PL_numeric_local = TRUE; | |
158 | set_numeric_radix(); | |
159 | } | |
160 | ||
161 | #endif /* USE_LOCALE_NUMERIC */ | |
162 | } | |
163 | ||
164 | /* | |
165 | * Set up for a new ctype locale. | |
166 | */ | |
167 | void | |
8772537c | 168 | Perl_new_ctype(pTHX_ const char *newctype) |
98994639 HS |
169 | { |
170 | #ifdef USE_LOCALE_CTYPE | |
27da23d5 | 171 | dVAR; |
98994639 HS |
172 | int i; |
173 | ||
174 | for (i = 0; i < 256; i++) { | |
175 | if (isUPPER_LC(i)) | |
176 | PL_fold_locale[i] = toLOWER_LC(i); | |
177 | else if (isLOWER_LC(i)) | |
178 | PL_fold_locale[i] = toUPPER_LC(i); | |
179 | else | |
180 | PL_fold_locale[i] = i; | |
181 | } | |
182 | ||
183 | #endif /* USE_LOCALE_CTYPE */ | |
8772537c | 184 | PERL_UNUSED_ARG(newctype); |
98994639 HS |
185 | } |
186 | ||
187 | /* | |
188 | * Set up for a new collation locale. | |
189 | */ | |
190 | void | |
8772537c | 191 | Perl_new_collate(pTHX_ const char *newcoll) |
98994639 HS |
192 | { |
193 | #ifdef USE_LOCALE_COLLATE | |
194 | ||
195 | if (! newcoll) { | |
196 | if (PL_collation_name) { | |
197 | ++PL_collation_ix; | |
198 | Safefree(PL_collation_name); | |
199 | PL_collation_name = NULL; | |
200 | } | |
201 | PL_collation_standard = TRUE; | |
202 | PL_collxfrm_base = 0; | |
203 | PL_collxfrm_mult = 2; | |
204 | return; | |
205 | } | |
206 | ||
207 | if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { | |
208 | ++PL_collation_ix; | |
209 | Safefree(PL_collation_name); | |
210 | PL_collation_name = stdize_locale(savepv(newcoll)); | |
770526c1 NC |
211 | PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') |
212 | || strEQ(newcoll, "POSIX")); | |
98994639 HS |
213 | |
214 | { | |
215 | /* 2: at most so many chars ('a', 'b'). */ | |
216 | /* 50: surely no system expands a char more. */ | |
217 | #define XFRMBUFSIZE (2 * 50) | |
218 | char xbuf[XFRMBUFSIZE]; | |
8772537c AL |
219 | const Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); |
220 | const Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); | |
221 | const SSize_t mult = fb - fa; | |
98994639 HS |
222 | if (mult < 1) |
223 | Perl_croak(aTHX_ "strxfrm() gets absurd"); | |
eb160463 | 224 | PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; |
98994639 HS |
225 | PL_collxfrm_mult = mult; |
226 | } | |
227 | } | |
228 | ||
229 | #endif /* USE_LOCALE_COLLATE */ | |
230 | } | |
231 | ||
232 | /* | |
233 | * Initialize locale awareness. | |
234 | */ | |
235 | int | |
236 | Perl_init_i18nl10n(pTHX_ int printwarn) | |
237 | { | |
238 | int ok = 1; | |
239 | /* returns | |
240 | * 1 = set ok or not applicable, | |
241 | * 0 = fallback to C locale, | |
242 | * -1 = fallback to C locale failed | |
243 | */ | |
244 | ||
245 | #if defined(USE_LOCALE) | |
246 | ||
247 | #ifdef USE_LOCALE_CTYPE | |
248 | char *curctype = NULL; | |
249 | #endif /* USE_LOCALE_CTYPE */ | |
250 | #ifdef USE_LOCALE_COLLATE | |
251 | char *curcoll = NULL; | |
252 | #endif /* USE_LOCALE_COLLATE */ | |
253 | #ifdef USE_LOCALE_NUMERIC | |
254 | char *curnum = NULL; | |
255 | #endif /* USE_LOCALE_NUMERIC */ | |
256 | #ifdef __GLIBC__ | |
257 | char *language = PerlEnv_getenv("LANGUAGE"); | |
258 | #endif | |
259 | char *lc_all = PerlEnv_getenv("LC_ALL"); | |
260 | char *lang = PerlEnv_getenv("LANG"); | |
261 | bool setlocale_failure = FALSE; | |
262 | ||
263 | #ifdef LOCALE_ENVIRON_REQUIRED | |
264 | ||
265 | /* | |
266 | * Ultrix setlocale(..., "") fails if there are no environment | |
267 | * variables from which to get a locale name. | |
268 | */ | |
269 | ||
270 | bool done = FALSE; | |
271 | ||
272 | #ifdef LC_ALL | |
273 | if (lang) { | |
274 | if (setlocale(LC_ALL, "")) | |
275 | done = TRUE; | |
276 | else | |
277 | setlocale_failure = TRUE; | |
278 | } | |
279 | if (!setlocale_failure) { | |
280 | #ifdef USE_LOCALE_CTYPE | |
281 | if (! (curctype = | |
282 | setlocale(LC_CTYPE, | |
283 | (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) | |
284 | ? "" : Nullch))) | |
285 | setlocale_failure = TRUE; | |
286 | else | |
287 | curctype = savepv(curctype); | |
288 | #endif /* USE_LOCALE_CTYPE */ | |
289 | #ifdef USE_LOCALE_COLLATE | |
290 | if (! (curcoll = | |
291 | setlocale(LC_COLLATE, | |
292 | (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) | |
293 | ? "" : Nullch))) | |
294 | setlocale_failure = TRUE; | |
295 | else | |
296 | curcoll = savepv(curcoll); | |
297 | #endif /* USE_LOCALE_COLLATE */ | |
298 | #ifdef USE_LOCALE_NUMERIC | |
299 | if (! (curnum = | |
300 | setlocale(LC_NUMERIC, | |
301 | (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) | |
302 | ? "" : Nullch))) | |
303 | setlocale_failure = TRUE; | |
304 | else | |
305 | curnum = savepv(curnum); | |
306 | #endif /* USE_LOCALE_NUMERIC */ | |
307 | } | |
308 | ||
309 | #endif /* LC_ALL */ | |
310 | ||
311 | #endif /* !LOCALE_ENVIRON_REQUIRED */ | |
312 | ||
313 | #ifdef LC_ALL | |
314 | if (! setlocale(LC_ALL, "")) | |
315 | setlocale_failure = TRUE; | |
316 | #endif /* LC_ALL */ | |
317 | ||
318 | if (!setlocale_failure) { | |
319 | #ifdef USE_LOCALE_CTYPE | |
320 | if (! (curctype = setlocale(LC_CTYPE, ""))) | |
321 | setlocale_failure = TRUE; | |
322 | else | |
323 | curctype = savepv(curctype); | |
324 | #endif /* USE_LOCALE_CTYPE */ | |
325 | #ifdef USE_LOCALE_COLLATE | |
326 | if (! (curcoll = setlocale(LC_COLLATE, ""))) | |
327 | setlocale_failure = TRUE; | |
328 | else | |
329 | curcoll = savepv(curcoll); | |
330 | #endif /* USE_LOCALE_COLLATE */ | |
331 | #ifdef USE_LOCALE_NUMERIC | |
332 | if (! (curnum = setlocale(LC_NUMERIC, ""))) | |
333 | setlocale_failure = TRUE; | |
334 | else | |
335 | curnum = savepv(curnum); | |
336 | #endif /* USE_LOCALE_NUMERIC */ | |
337 | } | |
338 | ||
339 | if (setlocale_failure) { | |
340 | char *p; | |
341 | bool locwarn = (printwarn > 1 || | |
342 | (printwarn && | |
343 | (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); | |
344 | ||
345 | if (locwarn) { | |
346 | #ifdef LC_ALL | |
347 | ||
348 | PerlIO_printf(Perl_error_log, | |
349 | "perl: warning: Setting locale failed.\n"); | |
350 | ||
351 | #else /* !LC_ALL */ | |
352 | ||
353 | PerlIO_printf(Perl_error_log, | |
354 | "perl: warning: Setting locale failed for the categories:\n\t"); | |
355 | #ifdef USE_LOCALE_CTYPE | |
356 | if (! curctype) | |
357 | PerlIO_printf(Perl_error_log, "LC_CTYPE "); | |
358 | #endif /* USE_LOCALE_CTYPE */ | |
359 | #ifdef USE_LOCALE_COLLATE | |
360 | if (! curcoll) | |
361 | PerlIO_printf(Perl_error_log, "LC_COLLATE "); | |
362 | #endif /* USE_LOCALE_COLLATE */ | |
363 | #ifdef USE_LOCALE_NUMERIC | |
364 | if (! curnum) | |
365 | PerlIO_printf(Perl_error_log, "LC_NUMERIC "); | |
366 | #endif /* USE_LOCALE_NUMERIC */ | |
367 | PerlIO_printf(Perl_error_log, "\n"); | |
368 | ||
369 | #endif /* LC_ALL */ | |
370 | ||
371 | PerlIO_printf(Perl_error_log, | |
372 | "perl: warning: Please check that your locale settings:\n"); | |
373 | ||
374 | #ifdef __GLIBC__ | |
375 | PerlIO_printf(Perl_error_log, | |
376 | "\tLANGUAGE = %c%s%c,\n", | |
377 | language ? '"' : '(', | |
378 | language ? language : "unset", | |
379 | language ? '"' : ')'); | |
380 | #endif | |
381 | ||
382 | PerlIO_printf(Perl_error_log, | |
383 | "\tLC_ALL = %c%s%c,\n", | |
384 | lc_all ? '"' : '(', | |
385 | lc_all ? lc_all : "unset", | |
386 | lc_all ? '"' : ')'); | |
387 | ||
388 | #if defined(USE_ENVIRON_ARRAY) | |
389 | { | |
390 | char **e; | |
391 | for (e = environ; *e; e++) { | |
392 | if (strnEQ(*e, "LC_", 3) | |
393 | && strnNE(*e, "LC_ALL=", 7) | |
394 | && (p = strchr(*e, '='))) | |
395 | PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", | |
396 | (int)(p - *e), *e, p + 1); | |
397 | } | |
398 | } | |
399 | #else | |
400 | PerlIO_printf(Perl_error_log, | |
401 | "\t(possibly more locale environment variables)\n"); | |
402 | #endif | |
403 | ||
404 | PerlIO_printf(Perl_error_log, | |
405 | "\tLANG = %c%s%c\n", | |
406 | lang ? '"' : '(', | |
407 | lang ? lang : "unset", | |
408 | lang ? '"' : ')'); | |
409 | ||
410 | PerlIO_printf(Perl_error_log, | |
411 | " are supported and installed on your system.\n"); | |
412 | } | |
413 | ||
414 | #ifdef LC_ALL | |
415 | ||
416 | if (setlocale(LC_ALL, "C")) { | |
417 | if (locwarn) | |
418 | PerlIO_printf(Perl_error_log, | |
419 | "perl: warning: Falling back to the standard locale (\"C\").\n"); | |
420 | ok = 0; | |
421 | } | |
422 | else { | |
423 | if (locwarn) | |
424 | PerlIO_printf(Perl_error_log, | |
425 | "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); | |
426 | ok = -1; | |
427 | } | |
428 | ||
429 | #else /* ! LC_ALL */ | |
430 | ||
431 | if (0 | |
432 | #ifdef USE_LOCALE_CTYPE | |
433 | || !(curctype || setlocale(LC_CTYPE, "C")) | |
434 | #endif /* USE_LOCALE_CTYPE */ | |
435 | #ifdef USE_LOCALE_COLLATE | |
436 | || !(curcoll || setlocale(LC_COLLATE, "C")) | |
437 | #endif /* USE_LOCALE_COLLATE */ | |
438 | #ifdef USE_LOCALE_NUMERIC | |
439 | || !(curnum || setlocale(LC_NUMERIC, "C")) | |
440 | #endif /* USE_LOCALE_NUMERIC */ | |
441 | ) | |
442 | { | |
443 | if (locwarn) | |
444 | PerlIO_printf(Perl_error_log, | |
445 | "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); | |
446 | ok = -1; | |
447 | } | |
448 | ||
449 | #endif /* ! LC_ALL */ | |
450 | ||
451 | #ifdef USE_LOCALE_CTYPE | |
452 | curctype = savepv(setlocale(LC_CTYPE, Nullch)); | |
453 | #endif /* USE_LOCALE_CTYPE */ | |
454 | #ifdef USE_LOCALE_COLLATE | |
455 | curcoll = savepv(setlocale(LC_COLLATE, Nullch)); | |
456 | #endif /* USE_LOCALE_COLLATE */ | |
457 | #ifdef USE_LOCALE_NUMERIC | |
458 | curnum = savepv(setlocale(LC_NUMERIC, Nullch)); | |
459 | #endif /* USE_LOCALE_NUMERIC */ | |
460 | } | |
461 | else { | |
462 | ||
463 | #ifdef USE_LOCALE_CTYPE | |
464 | new_ctype(curctype); | |
465 | #endif /* USE_LOCALE_CTYPE */ | |
466 | ||
467 | #ifdef USE_LOCALE_COLLATE | |
468 | new_collate(curcoll); | |
469 | #endif /* USE_LOCALE_COLLATE */ | |
470 | ||
471 | #ifdef USE_LOCALE_NUMERIC | |
472 | new_numeric(curnum); | |
473 | #endif /* USE_LOCALE_NUMERIC */ | |
b310b053 | 474 | |
98994639 HS |
475 | } |
476 | ||
477 | #endif /* USE_LOCALE */ | |
478 | ||
ec71e770 | 479 | #ifdef USE_PERLIO |
b310b053 | 480 | { |
fde18df1 | 481 | /* Set PL_utf8locale to TRUE if using PerlIO _and_ |
ec71e770 | 482 | any of the following are true: |
085a54d9 | 483 | - nl_langinfo(CODESET) contains /^utf-?8/i |
61de9fb5 | 484 | - $ENV{LC_ALL} contains /^utf-?8/i |
085a54d9 | 485 | - $ENV{LC_CTYPE} contains /^utf-?8/i |
61de9fb5 JH |
486 | - $ENV{LANG} contains /^utf-?8/i |
487 | The LC_ALL, LC_CTYPE, LANG obey the usual override | |
488 | hierarchy of locale environment variables. (LANGUAGE | |
489 | affects only LC_MESSAGES only under glibc.) (If present, | |
490 | it overrides LC_MESSAGES for GNU gettext, and it also | |
491 | can have more than one locale, separated by spaces, | |
492 | in case you need to know.) | |
8aa8f774 | 493 | If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) |
a05d7ebb | 494 | are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer |
fde18df1 | 495 | on STDIN, STDOUT, STDERR, _and_ the default open discipline. |
085a54d9 | 496 | */ |
fde18df1 | 497 | bool utf8locale = FALSE; |
b310b053 JH |
498 | char *codeset = NULL; |
499 | #if defined(HAS_NL_LANGINFO) && defined(CODESET) | |
500 | codeset = nl_langinfo(CODESET); | |
501 | #endif | |
61de9fb5 | 502 | if (codeset) |
fde18df1 JH |
503 | utf8locale = (ibcmp(codeset, "UTF-8", 5) == 0 || |
504 | ibcmp(codeset, "UTF8", 4) == 0); | |
077a72a9 | 505 | #if defined(USE_LOCALE) |
61de9fb5 JH |
506 | else { /* nl_langinfo(CODESET) is supposed to correctly |
507 | * interpret the locale environment variables, | |
508 | * but just in case it fails, let's do this manually. */ | |
509 | if (lang) | |
fde18df1 JH |
510 | utf8locale = (ibcmp(lang, "UTF-8", 5) == 0 || |
511 | ibcmp(lang, "UTF8", 4) == 0); | |
b310b053 | 512 | #ifdef USE_LOCALE_CTYPE |
61de9fb5 | 513 | if (curctype) |
fde18df1 JH |
514 | utf8locale = (ibcmp(curctype, "UTF-8", 5) == 0 || |
515 | ibcmp(curctype, "UTF8", 4) == 0); | |
b310b053 | 516 | #endif |
61de9fb5 | 517 | if (lc_all) |
fde18df1 JH |
518 | utf8locale = (ibcmp(lc_all, "UTF-8", 5) == 0 || |
519 | ibcmp(lc_all, "UTF8", 4) == 0); | |
61de9fb5 | 520 | } |
fde18df1 JH |
521 | #endif /* USE_LOCALE */ |
522 | if (utf8locale) | |
523 | PL_utf8locale = TRUE; | |
524 | } | |
a05d7ebb | 525 | /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. |
fde18df1 JH |
526 | This is an alternative to using the -C command line switch |
527 | (the -C if present will override this). */ | |
528 | { | |
dd374669 | 529 | const char *p = PerlEnv_getenv("PERL_UNICODE"); |
a05d7ebb | 530 | PL_unicode = p ? parse_unicode_opts(&p) : 0; |
b310b053 | 531 | } |
ec71e770 | 532 | #endif |
b310b053 | 533 | |
98994639 | 534 | #ifdef USE_LOCALE_CTYPE |
43c5f42d | 535 | Safefree(curctype); |
98994639 HS |
536 | #endif /* USE_LOCALE_CTYPE */ |
537 | #ifdef USE_LOCALE_COLLATE | |
43c5f42d | 538 | Safefree(curcoll); |
98994639 HS |
539 | #endif /* USE_LOCALE_COLLATE */ |
540 | #ifdef USE_LOCALE_NUMERIC | |
43c5f42d | 541 | Safefree(curnum); |
98994639 HS |
542 | #endif /* USE_LOCALE_NUMERIC */ |
543 | return ok; | |
544 | } | |
545 | ||
98994639 HS |
546 | #ifdef USE_LOCALE_COLLATE |
547 | ||
548 | /* | |
549 | * mem_collxfrm() is a bit like strxfrm() but with two important | |
550 | * differences. First, it handles embedded NULs. Second, it allocates | |
551 | * a bit more memory than needed for the transformed data itself. | |
552 | * The real transformed data begins at offset sizeof(collationix). | |
553 | * Please see sv_collxfrm() to see how this is used. | |
554 | */ | |
166f8a29 | 555 | |
98994639 HS |
556 | char * |
557 | Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) | |
558 | { | |
559 | char *xbuf; | |
560 | STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ | |
561 | ||
562 | /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ | |
563 | /* the +1 is for the terminating NUL. */ | |
564 | ||
565 | xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; | |
a02a5408 | 566 | Newx(xbuf, xAlloc, char); |
98994639 HS |
567 | if (! xbuf) |
568 | goto bad; | |
569 | ||
570 | *(U32*)xbuf = PL_collation_ix; | |
571 | xout = sizeof(PL_collation_ix); | |
572 | for (xin = 0; xin < len; ) { | |
573 | SSize_t xused; | |
574 | ||
575 | for (;;) { | |
576 | xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); | |
577 | if (xused == -1) | |
578 | goto bad; | |
eb160463 | 579 | if ((STRLEN)xused < xAlloc - xout) |
98994639 HS |
580 | break; |
581 | xAlloc = (2 * xAlloc) + 1; | |
582 | Renew(xbuf, xAlloc, char); | |
583 | if (! xbuf) | |
584 | goto bad; | |
585 | } | |
586 | ||
587 | xin += strlen(s + xin) + 1; | |
588 | xout += xused; | |
589 | ||
590 | /* Embedded NULs are understood but silently skipped | |
591 | * because they make no sense in locale collation. */ | |
592 | } | |
593 | ||
594 | xbuf[xout] = '\0'; | |
595 | *xlen = xout - sizeof(PL_collation_ix); | |
596 | return xbuf; | |
597 | ||
598 | bad: | |
599 | Safefree(xbuf); | |
600 | *xlen = 0; | |
601 | return NULL; | |
602 | } | |
603 | ||
604 | #endif /* USE_LOCALE_COLLATE */ | |
605 | ||
66610fdd RGS |
606 | /* |
607 | * Local variables: | |
608 | * c-indentation-style: bsd | |
609 | * c-basic-offset: 4 | |
610 | * indent-tabs-mode: t | |
611 | * End: | |
612 | * | |
37442d52 RGS |
613 | * ex: set ts=8 sts=4 sw=4 noet: |
614 | */ |