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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 | { | |
56 | char *s; | |
57 | bool okay = TRUE; | |
58 | ||
59 | if ((s = strchr(locs, '='))) { | |
60 | char *t; | |
61 | ||
62 | okay = FALSE; | |
63 | if ((t = strchr(s, '.'))) { | |
64 | char *u; | |
65 | ||
66 | if ((u = strchr(t, '\n'))) { | |
67 | ||
68 | if (u[1] == 0) { | |
69 | STRLEN len = u - s; | |
70 | Move(s + 1, locs, len, char); | |
71 | locs[len] = 0; | |
72 | okay = TRUE; | |
73 | } | |
74 | } | |
75 | } | |
76 | } | |
77 | ||
78 | if (!okay) | |
79 | Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs); | |
80 | ||
81 | return locs; | |
82 | } | |
27da23d5 | 83 | #endif |
98994639 HS |
84 | |
85 | void | |
86 | Perl_set_numeric_radix(pTHX) | |
87 | { | |
88 | #ifdef USE_LOCALE_NUMERIC | |
89 | # ifdef HAS_LOCALECONV | |
90 | struct lconv* lc; | |
91 | ||
92 | lc = localeconv(); | |
93 | if (lc && lc->decimal_point) { | |
94 | if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) { | |
95 | SvREFCNT_dec(PL_numeric_radix_sv); | |
96 | PL_numeric_radix_sv = Nullsv; | |
97 | } | |
98 | else { | |
99 | if (PL_numeric_radix_sv) | |
100 | sv_setpv(PL_numeric_radix_sv, lc->decimal_point); | |
101 | else | |
102 | PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0); | |
103 | } | |
104 | } | |
105 | else | |
106 | PL_numeric_radix_sv = Nullsv; | |
107 | # endif /* HAS_LOCALECONV */ | |
108 | #endif /* USE_LOCALE_NUMERIC */ | |
109 | } | |
110 | ||
111 | /* | |
112 | * Set up for a new numeric locale. | |
113 | */ | |
114 | void | |
115 | Perl_new_numeric(pTHX_ char *newnum) | |
116 | { | |
117 | #ifdef USE_LOCALE_NUMERIC | |
118 | ||
119 | if (! newnum) { | |
120 | if (PL_numeric_name) { | |
121 | Safefree(PL_numeric_name); | |
122 | PL_numeric_name = NULL; | |
123 | } | |
124 | PL_numeric_standard = TRUE; | |
125 | PL_numeric_local = TRUE; | |
126 | return; | |
127 | } | |
128 | ||
129 | if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) { | |
130 | Safefree(PL_numeric_name); | |
131 | PL_numeric_name = stdize_locale(savepv(newnum)); | |
770526c1 NC |
132 | PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0') |
133 | || strEQ(newnum, "POSIX")); | |
98994639 HS |
134 | PL_numeric_local = TRUE; |
135 | set_numeric_radix(); | |
136 | } | |
137 | ||
138 | #endif /* USE_LOCALE_NUMERIC */ | |
139 | } | |
140 | ||
141 | void | |
142 | Perl_set_numeric_standard(pTHX) | |
143 | { | |
144 | #ifdef USE_LOCALE_NUMERIC | |
145 | ||
146 | if (! PL_numeric_standard) { | |
147 | setlocale(LC_NUMERIC, "C"); | |
148 | PL_numeric_standard = TRUE; | |
149 | PL_numeric_local = FALSE; | |
150 | set_numeric_radix(); | |
151 | } | |
152 | ||
153 | #endif /* USE_LOCALE_NUMERIC */ | |
154 | } | |
155 | ||
156 | void | |
157 | Perl_set_numeric_local(pTHX) | |
158 | { | |
159 | #ifdef USE_LOCALE_NUMERIC | |
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 | |
175 | Perl_new_ctype(pTHX_ char *newctype) | |
176 | { | |
177 | #ifdef USE_LOCALE_CTYPE | |
27da23d5 | 178 | dVAR; |
98994639 HS |
179 | int i; |
180 | ||
181 | for (i = 0; i < 256; i++) { | |
182 | if (isUPPER_LC(i)) | |
183 | PL_fold_locale[i] = toLOWER_LC(i); | |
184 | else if (isLOWER_LC(i)) | |
185 | PL_fold_locale[i] = toUPPER_LC(i); | |
186 | else | |
187 | PL_fold_locale[i] = i; | |
188 | } | |
189 | ||
190 | #endif /* USE_LOCALE_CTYPE */ | |
dd374669 | 191 | (void)newctype; |
98994639 HS |
192 | } |
193 | ||
194 | /* | |
195 | * Set up for a new collation locale. | |
196 | */ | |
197 | void | |
198 | Perl_new_collate(pTHX_ char *newcoll) | |
199 | { | |
200 | #ifdef USE_LOCALE_COLLATE | |
201 | ||
202 | if (! newcoll) { | |
203 | if (PL_collation_name) { | |
204 | ++PL_collation_ix; | |
205 | Safefree(PL_collation_name); | |
206 | PL_collation_name = NULL; | |
207 | } | |
208 | PL_collation_standard = TRUE; | |
209 | PL_collxfrm_base = 0; | |
210 | PL_collxfrm_mult = 2; | |
211 | return; | |
212 | } | |
213 | ||
214 | if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { | |
215 | ++PL_collation_ix; | |
216 | Safefree(PL_collation_name); | |
217 | PL_collation_name = stdize_locale(savepv(newcoll)); | |
770526c1 NC |
218 | PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') |
219 | || strEQ(newcoll, "POSIX")); | |
98994639 HS |
220 | |
221 | { | |
222 | /* 2: at most so many chars ('a', 'b'). */ | |
223 | /* 50: surely no system expands a char more. */ | |
224 | #define XFRMBUFSIZE (2 * 50) | |
225 | char xbuf[XFRMBUFSIZE]; | |
226 | Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); | |
227 | Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); | |
228 | SSize_t mult = fb - fa; | |
229 | if (mult < 1) | |
230 | Perl_croak(aTHX_ "strxfrm() gets absurd"); | |
eb160463 | 231 | PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; |
98994639 HS |
232 | PL_collxfrm_mult = mult; |
233 | } | |
234 | } | |
235 | ||
236 | #endif /* USE_LOCALE_COLLATE */ | |
237 | } | |
238 | ||
239 | /* | |
240 | * Initialize locale awareness. | |
241 | */ | |
242 | int | |
243 | Perl_init_i18nl10n(pTHX_ int printwarn) | |
244 | { | |
245 | int ok = 1; | |
246 | /* returns | |
247 | * 1 = set ok or not applicable, | |
248 | * 0 = fallback to C locale, | |
249 | * -1 = fallback to C locale failed | |
250 | */ | |
251 | ||
252 | #if defined(USE_LOCALE) | |
253 | ||
254 | #ifdef USE_LOCALE_CTYPE | |
255 | char *curctype = NULL; | |
256 | #endif /* USE_LOCALE_CTYPE */ | |
257 | #ifdef USE_LOCALE_COLLATE | |
258 | char *curcoll = NULL; | |
259 | #endif /* USE_LOCALE_COLLATE */ | |
260 | #ifdef USE_LOCALE_NUMERIC | |
261 | char *curnum = NULL; | |
262 | #endif /* USE_LOCALE_NUMERIC */ | |
263 | #ifdef __GLIBC__ | |
264 | char *language = PerlEnv_getenv("LANGUAGE"); | |
265 | #endif | |
266 | char *lc_all = PerlEnv_getenv("LC_ALL"); | |
267 | char *lang = PerlEnv_getenv("LANG"); | |
268 | bool setlocale_failure = FALSE; | |
269 | ||
270 | #ifdef LOCALE_ENVIRON_REQUIRED | |
271 | ||
272 | /* | |
273 | * Ultrix setlocale(..., "") fails if there are no environment | |
274 | * variables from which to get a locale name. | |
275 | */ | |
276 | ||
277 | bool done = FALSE; | |
278 | ||
279 | #ifdef LC_ALL | |
280 | if (lang) { | |
281 | if (setlocale(LC_ALL, "")) | |
282 | done = TRUE; | |
283 | else | |
284 | setlocale_failure = TRUE; | |
285 | } | |
286 | if (!setlocale_failure) { | |
287 | #ifdef USE_LOCALE_CTYPE | |
288 | if (! (curctype = | |
289 | setlocale(LC_CTYPE, | |
290 | (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) | |
291 | ? "" : Nullch))) | |
292 | setlocale_failure = TRUE; | |
293 | else | |
294 | curctype = savepv(curctype); | |
295 | #endif /* USE_LOCALE_CTYPE */ | |
296 | #ifdef USE_LOCALE_COLLATE | |
297 | if (! (curcoll = | |
298 | setlocale(LC_COLLATE, | |
299 | (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) | |
300 | ? "" : Nullch))) | |
301 | setlocale_failure = TRUE; | |
302 | else | |
303 | curcoll = savepv(curcoll); | |
304 | #endif /* USE_LOCALE_COLLATE */ | |
305 | #ifdef USE_LOCALE_NUMERIC | |
306 | if (! (curnum = | |
307 | setlocale(LC_NUMERIC, | |
308 | (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) | |
309 | ? "" : Nullch))) | |
310 | setlocale_failure = TRUE; | |
311 | else | |
312 | curnum = savepv(curnum); | |
313 | #endif /* USE_LOCALE_NUMERIC */ | |
314 | } | |
315 | ||
316 | #endif /* LC_ALL */ | |
317 | ||
318 | #endif /* !LOCALE_ENVIRON_REQUIRED */ | |
319 | ||
320 | #ifdef LC_ALL | |
321 | if (! setlocale(LC_ALL, "")) | |
322 | setlocale_failure = TRUE; | |
323 | #endif /* LC_ALL */ | |
324 | ||
325 | if (!setlocale_failure) { | |
326 | #ifdef USE_LOCALE_CTYPE | |
327 | if (! (curctype = setlocale(LC_CTYPE, ""))) | |
328 | setlocale_failure = TRUE; | |
329 | else | |
330 | curctype = savepv(curctype); | |
331 | #endif /* USE_LOCALE_CTYPE */ | |
332 | #ifdef USE_LOCALE_COLLATE | |
333 | if (! (curcoll = setlocale(LC_COLLATE, ""))) | |
334 | setlocale_failure = TRUE; | |
335 | else | |
336 | curcoll = savepv(curcoll); | |
337 | #endif /* USE_LOCALE_COLLATE */ | |
338 | #ifdef USE_LOCALE_NUMERIC | |
339 | if (! (curnum = setlocale(LC_NUMERIC, ""))) | |
340 | setlocale_failure = TRUE; | |
341 | else | |
342 | curnum = savepv(curnum); | |
343 | #endif /* USE_LOCALE_NUMERIC */ | |
344 | } | |
345 | ||
346 | if (setlocale_failure) { | |
347 | char *p; | |
348 | bool locwarn = (printwarn > 1 || | |
349 | (printwarn && | |
350 | (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); | |
351 | ||
352 | if (locwarn) { | |
353 | #ifdef LC_ALL | |
354 | ||
355 | PerlIO_printf(Perl_error_log, | |
356 | "perl: warning: Setting locale failed.\n"); | |
357 | ||
358 | #else /* !LC_ALL */ | |
359 | ||
360 | PerlIO_printf(Perl_error_log, | |
361 | "perl: warning: Setting locale failed for the categories:\n\t"); | |
362 | #ifdef USE_LOCALE_CTYPE | |
363 | if (! curctype) | |
364 | PerlIO_printf(Perl_error_log, "LC_CTYPE "); | |
365 | #endif /* USE_LOCALE_CTYPE */ | |
366 | #ifdef USE_LOCALE_COLLATE | |
367 | if (! curcoll) | |
368 | PerlIO_printf(Perl_error_log, "LC_COLLATE "); | |
369 | #endif /* USE_LOCALE_COLLATE */ | |
370 | #ifdef USE_LOCALE_NUMERIC | |
371 | if (! curnum) | |
372 | PerlIO_printf(Perl_error_log, "LC_NUMERIC "); | |
373 | #endif /* USE_LOCALE_NUMERIC */ | |
374 | PerlIO_printf(Perl_error_log, "\n"); | |
375 | ||
376 | #endif /* LC_ALL */ | |
377 | ||
378 | PerlIO_printf(Perl_error_log, | |
379 | "perl: warning: Please check that your locale settings:\n"); | |
380 | ||
381 | #ifdef __GLIBC__ | |
382 | PerlIO_printf(Perl_error_log, | |
383 | "\tLANGUAGE = %c%s%c,\n", | |
384 | language ? '"' : '(', | |
385 | language ? language : "unset", | |
386 | language ? '"' : ')'); | |
387 | #endif | |
388 | ||
389 | PerlIO_printf(Perl_error_log, | |
390 | "\tLC_ALL = %c%s%c,\n", | |
391 | lc_all ? '"' : '(', | |
392 | lc_all ? lc_all : "unset", | |
393 | lc_all ? '"' : ')'); | |
394 | ||
395 | #if defined(USE_ENVIRON_ARRAY) | |
396 | { | |
397 | char **e; | |
398 | for (e = environ; *e; e++) { | |
399 | if (strnEQ(*e, "LC_", 3) | |
400 | && strnNE(*e, "LC_ALL=", 7) | |
401 | && (p = strchr(*e, '='))) | |
402 | PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", | |
403 | (int)(p - *e), *e, p + 1); | |
404 | } | |
405 | } | |
406 | #else | |
407 | PerlIO_printf(Perl_error_log, | |
408 | "\t(possibly more locale environment variables)\n"); | |
409 | #endif | |
410 | ||
411 | PerlIO_printf(Perl_error_log, | |
412 | "\tLANG = %c%s%c\n", | |
413 | lang ? '"' : '(', | |
414 | lang ? lang : "unset", | |
415 | lang ? '"' : ')'); | |
416 | ||
417 | PerlIO_printf(Perl_error_log, | |
418 | " are supported and installed on your system.\n"); | |
419 | } | |
420 | ||
421 | #ifdef LC_ALL | |
422 | ||
423 | if (setlocale(LC_ALL, "C")) { | |
424 | if (locwarn) | |
425 | PerlIO_printf(Perl_error_log, | |
426 | "perl: warning: Falling back to the standard locale (\"C\").\n"); | |
427 | ok = 0; | |
428 | } | |
429 | else { | |
430 | if (locwarn) | |
431 | PerlIO_printf(Perl_error_log, | |
432 | "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); | |
433 | ok = -1; | |
434 | } | |
435 | ||
436 | #else /* ! LC_ALL */ | |
437 | ||
438 | if (0 | |
439 | #ifdef USE_LOCALE_CTYPE | |
440 | || !(curctype || setlocale(LC_CTYPE, "C")) | |
441 | #endif /* USE_LOCALE_CTYPE */ | |
442 | #ifdef USE_LOCALE_COLLATE | |
443 | || !(curcoll || setlocale(LC_COLLATE, "C")) | |
444 | #endif /* USE_LOCALE_COLLATE */ | |
445 | #ifdef USE_LOCALE_NUMERIC | |
446 | || !(curnum || setlocale(LC_NUMERIC, "C")) | |
447 | #endif /* USE_LOCALE_NUMERIC */ | |
448 | ) | |
449 | { | |
450 | if (locwarn) | |
451 | PerlIO_printf(Perl_error_log, | |
452 | "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); | |
453 | ok = -1; | |
454 | } | |
455 | ||
456 | #endif /* ! LC_ALL */ | |
457 | ||
458 | #ifdef USE_LOCALE_CTYPE | |
459 | curctype = savepv(setlocale(LC_CTYPE, Nullch)); | |
460 | #endif /* USE_LOCALE_CTYPE */ | |
461 | #ifdef USE_LOCALE_COLLATE | |
462 | curcoll = savepv(setlocale(LC_COLLATE, Nullch)); | |
463 | #endif /* USE_LOCALE_COLLATE */ | |
464 | #ifdef USE_LOCALE_NUMERIC | |
465 | curnum = savepv(setlocale(LC_NUMERIC, Nullch)); | |
466 | #endif /* USE_LOCALE_NUMERIC */ | |
467 | } | |
468 | else { | |
469 | ||
470 | #ifdef USE_LOCALE_CTYPE | |
471 | new_ctype(curctype); | |
472 | #endif /* USE_LOCALE_CTYPE */ | |
473 | ||
474 | #ifdef USE_LOCALE_COLLATE | |
475 | new_collate(curcoll); | |
476 | #endif /* USE_LOCALE_COLLATE */ | |
477 | ||
478 | #ifdef USE_LOCALE_NUMERIC | |
479 | new_numeric(curnum); | |
480 | #endif /* USE_LOCALE_NUMERIC */ | |
b310b053 | 481 | |
98994639 HS |
482 | } |
483 | ||
484 | #endif /* USE_LOCALE */ | |
485 | ||
ec71e770 | 486 | #ifdef USE_PERLIO |
b310b053 | 487 | { |
fde18df1 | 488 | /* Set PL_utf8locale to TRUE if using PerlIO _and_ |
ec71e770 | 489 | any of the following are true: |
085a54d9 | 490 | - nl_langinfo(CODESET) contains /^utf-?8/i |
61de9fb5 | 491 | - $ENV{LC_ALL} contains /^utf-?8/i |
085a54d9 | 492 | - $ENV{LC_CTYPE} contains /^utf-?8/i |
61de9fb5 JH |
493 | - $ENV{LANG} contains /^utf-?8/i |
494 | The LC_ALL, LC_CTYPE, LANG obey the usual override | |
495 | hierarchy of locale environment variables. (LANGUAGE | |
496 | affects only LC_MESSAGES only under glibc.) (If present, | |
497 | it overrides LC_MESSAGES for GNU gettext, and it also | |
498 | can have more than one locale, separated by spaces, | |
499 | in case you need to know.) | |
8aa8f774 | 500 | If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) |
a05d7ebb | 501 | are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer |
fde18df1 | 502 | on STDIN, STDOUT, STDERR, _and_ the default open discipline. |
085a54d9 | 503 | */ |
fde18df1 | 504 | bool utf8locale = FALSE; |
b310b053 JH |
505 | char *codeset = NULL; |
506 | #if defined(HAS_NL_LANGINFO) && defined(CODESET) | |
507 | codeset = nl_langinfo(CODESET); | |
508 | #endif | |
61de9fb5 | 509 | if (codeset) |
fde18df1 JH |
510 | utf8locale = (ibcmp(codeset, "UTF-8", 5) == 0 || |
511 | ibcmp(codeset, "UTF8", 4) == 0); | |
077a72a9 | 512 | #if defined(USE_LOCALE) |
61de9fb5 JH |
513 | else { /* nl_langinfo(CODESET) is supposed to correctly |
514 | * interpret the locale environment variables, | |
515 | * but just in case it fails, let's do this manually. */ | |
516 | if (lang) | |
fde18df1 JH |
517 | utf8locale = (ibcmp(lang, "UTF-8", 5) == 0 || |
518 | ibcmp(lang, "UTF8", 4) == 0); | |
b310b053 | 519 | #ifdef USE_LOCALE_CTYPE |
61de9fb5 | 520 | if (curctype) |
fde18df1 JH |
521 | utf8locale = (ibcmp(curctype, "UTF-8", 5) == 0 || |
522 | ibcmp(curctype, "UTF8", 4) == 0); | |
b310b053 | 523 | #endif |
61de9fb5 | 524 | if (lc_all) |
fde18df1 JH |
525 | utf8locale = (ibcmp(lc_all, "UTF-8", 5) == 0 || |
526 | ibcmp(lc_all, "UTF8", 4) == 0); | |
61de9fb5 | 527 | } |
fde18df1 JH |
528 | #endif /* USE_LOCALE */ |
529 | if (utf8locale) | |
530 | PL_utf8locale = TRUE; | |
531 | } | |
a05d7ebb | 532 | /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. |
fde18df1 JH |
533 | This is an alternative to using the -C command line switch |
534 | (the -C if present will override this). */ | |
535 | { | |
dd374669 | 536 | const char *p = PerlEnv_getenv("PERL_UNICODE"); |
a05d7ebb | 537 | PL_unicode = p ? parse_unicode_opts(&p) : 0; |
b310b053 | 538 | } |
ec71e770 | 539 | #endif |
b310b053 | 540 | |
98994639 HS |
541 | #ifdef USE_LOCALE_CTYPE |
542 | if (curctype != NULL) | |
543 | Safefree(curctype); | |
544 | #endif /* USE_LOCALE_CTYPE */ | |
545 | #ifdef USE_LOCALE_COLLATE | |
546 | if (curcoll != NULL) | |
547 | Safefree(curcoll); | |
548 | #endif /* USE_LOCALE_COLLATE */ | |
549 | #ifdef USE_LOCALE_NUMERIC | |
550 | if (curnum != NULL) | |
551 | Safefree(curnum); | |
552 | #endif /* USE_LOCALE_NUMERIC */ | |
553 | return ok; | |
554 | } | |
555 | ||
556 | /* Backwards compatibility. */ | |
557 | int | |
558 | Perl_init_i18nl14n(pTHX_ int printwarn) | |
559 | { | |
560 | return init_i18nl10n(printwarn); | |
561 | } | |
562 | ||
563 | #ifdef USE_LOCALE_COLLATE | |
564 | ||
565 | /* | |
566 | * mem_collxfrm() is a bit like strxfrm() but with two important | |
567 | * differences. First, it handles embedded NULs. Second, it allocates | |
568 | * a bit more memory than needed for the transformed data itself. | |
569 | * The real transformed data begins at offset sizeof(collationix). | |
570 | * Please see sv_collxfrm() to see how this is used. | |
571 | */ | |
166f8a29 | 572 | |
98994639 HS |
573 | char * |
574 | Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) | |
575 | { | |
576 | char *xbuf; | |
577 | STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ | |
578 | ||
579 | /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ | |
580 | /* the +1 is for the terminating NUL. */ | |
581 | ||
582 | xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; | |
583 | New(171, xbuf, xAlloc, char); | |
584 | if (! xbuf) | |
585 | goto bad; | |
586 | ||
587 | *(U32*)xbuf = PL_collation_ix; | |
588 | xout = sizeof(PL_collation_ix); | |
589 | for (xin = 0; xin < len; ) { | |
590 | SSize_t xused; | |
591 | ||
592 | for (;;) { | |
593 | xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); | |
594 | if (xused == -1) | |
595 | goto bad; | |
eb160463 | 596 | if ((STRLEN)xused < xAlloc - xout) |
98994639 HS |
597 | break; |
598 | xAlloc = (2 * xAlloc) + 1; | |
599 | Renew(xbuf, xAlloc, char); | |
600 | if (! xbuf) | |
601 | goto bad; | |
602 | } | |
603 | ||
604 | xin += strlen(s + xin) + 1; | |
605 | xout += xused; | |
606 | ||
607 | /* Embedded NULs are understood but silently skipped | |
608 | * because they make no sense in locale collation. */ | |
609 | } | |
610 | ||
611 | xbuf[xout] = '\0'; | |
612 | *xlen = xout - sizeof(PL_collation_ix); | |
613 | return xbuf; | |
614 | ||
615 | bad: | |
616 | Safefree(xbuf); | |
617 | *xlen = 0; | |
618 | return NULL; | |
619 | } | |
620 | ||
621 | #endif /* USE_LOCALE_COLLATE */ | |
622 | ||
66610fdd RGS |
623 | /* |
624 | * Local variables: | |
625 | * c-indentation-style: bsd | |
626 | * c-basic-offset: 4 | |
627 | * indent-tabs-mode: t | |
628 | * End: | |
629 | * | |
37442d52 RGS |
630 | * ex: set ts=8 sts=4 sw=4 noet: |
631 | */ |