Commit | Line | Data |
98994639 |
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 |
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 |
21 | /* utility functions for handling locale-specific stuff like what |
22 | * character represents the decimal point. |
23 | */ |
24 | |
98994639 |
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 |
33 | #ifdef I_LANGINFO |
34 | # include <langinfo.h> |
35 | #endif |
36 | |
a4af207c |
37 | #include "reentr.h" |
38 | |
98994639 |
39 | /* |
40 | * Standardize the locale name from a string returned by 'setlocale'. |
41 | * |
42 | * The standard return value of setlocale() is either |
43 | * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL |
44 | * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL |
45 | * (the space-separated values represent the various sublocales, |
46 | * in some unspecificed order) |
47 | * |
48 | * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n", |
49 | * which is harmful for further use of the string in setlocale(). |
50 | * |
51 | */ |
52 | STATIC char * |
53 | S_stdize_locale(pTHX_ char *locs) |
54 | { |
55 | char *s; |
56 | bool okay = TRUE; |
57 | |
58 | if ((s = strchr(locs, '='))) { |
59 | char *t; |
60 | |
61 | okay = FALSE; |
62 | if ((t = strchr(s, '.'))) { |
63 | char *u; |
64 | |
65 | if ((u = strchr(t, '\n'))) { |
66 | |
67 | if (u[1] == 0) { |
68 | STRLEN len = u - s; |
69 | Move(s + 1, locs, len, char); |
70 | locs[len] = 0; |
71 | okay = TRUE; |
72 | } |
73 | } |
74 | } |
75 | } |
76 | |
77 | if (!okay) |
78 | Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs); |
79 | |
80 | return locs; |
81 | } |
82 | |
83 | void |
84 | Perl_set_numeric_radix(pTHX) |
85 | { |
86 | #ifdef USE_LOCALE_NUMERIC |
87 | # ifdef HAS_LOCALECONV |
88 | struct lconv* lc; |
89 | |
90 | lc = localeconv(); |
91 | if (lc && lc->decimal_point) { |
92 | if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) { |
93 | SvREFCNT_dec(PL_numeric_radix_sv); |
94 | PL_numeric_radix_sv = Nullsv; |
95 | } |
96 | else { |
97 | if (PL_numeric_radix_sv) |
98 | sv_setpv(PL_numeric_radix_sv, lc->decimal_point); |
99 | else |
100 | PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0); |
101 | } |
102 | } |
103 | else |
104 | PL_numeric_radix_sv = Nullsv; |
105 | # endif /* HAS_LOCALECONV */ |
106 | #endif /* USE_LOCALE_NUMERIC */ |
107 | } |
108 | |
109 | /* |
110 | * Set up for a new numeric locale. |
111 | */ |
112 | void |
113 | Perl_new_numeric(pTHX_ char *newnum) |
114 | { |
115 | #ifdef USE_LOCALE_NUMERIC |
116 | |
117 | if (! newnum) { |
118 | if (PL_numeric_name) { |
119 | Safefree(PL_numeric_name); |
120 | PL_numeric_name = NULL; |
121 | } |
122 | PL_numeric_standard = TRUE; |
123 | PL_numeric_local = TRUE; |
124 | return; |
125 | } |
126 | |
127 | if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) { |
128 | Safefree(PL_numeric_name); |
129 | PL_numeric_name = stdize_locale(savepv(newnum)); |
770526c1 |
130 | PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0') |
131 | || strEQ(newnum, "POSIX")); |
98994639 |
132 | PL_numeric_local = TRUE; |
133 | set_numeric_radix(); |
134 | } |
135 | |
136 | #endif /* USE_LOCALE_NUMERIC */ |
137 | } |
138 | |
139 | void |
140 | Perl_set_numeric_standard(pTHX) |
141 | { |
142 | #ifdef USE_LOCALE_NUMERIC |
143 | |
144 | if (! PL_numeric_standard) { |
145 | setlocale(LC_NUMERIC, "C"); |
146 | PL_numeric_standard = TRUE; |
147 | PL_numeric_local = FALSE; |
148 | set_numeric_radix(); |
149 | } |
150 | |
151 | #endif /* USE_LOCALE_NUMERIC */ |
152 | } |
153 | |
154 | void |
155 | Perl_set_numeric_local(pTHX) |
156 | { |
157 | #ifdef USE_LOCALE_NUMERIC |
158 | |
159 | if (! PL_numeric_local) { |
160 | setlocale(LC_NUMERIC, PL_numeric_name); |
161 | PL_numeric_standard = FALSE; |
162 | PL_numeric_local = TRUE; |
163 | set_numeric_radix(); |
164 | } |
165 | |
166 | #endif /* USE_LOCALE_NUMERIC */ |
167 | } |
168 | |
169 | /* |
170 | * Set up for a new ctype locale. |
171 | */ |
172 | void |
173 | Perl_new_ctype(pTHX_ char *newctype) |
174 | { |
175 | #ifdef USE_LOCALE_CTYPE |
176 | |
177 | int i; |
178 | |
179 | for (i = 0; i < 256; i++) { |
180 | if (isUPPER_LC(i)) |
181 | PL_fold_locale[i] = toLOWER_LC(i); |
182 | else if (isLOWER_LC(i)) |
183 | PL_fold_locale[i] = toUPPER_LC(i); |
184 | else |
185 | PL_fold_locale[i] = i; |
186 | } |
187 | |
188 | #endif /* USE_LOCALE_CTYPE */ |
dd374669 |
189 | (void)newctype; |
98994639 |
190 | } |
191 | |
192 | /* |
193 | * Set up for a new collation locale. |
194 | */ |
195 | void |
196 | Perl_new_collate(pTHX_ char *newcoll) |
197 | { |
198 | #ifdef USE_LOCALE_COLLATE |
199 | |
200 | if (! newcoll) { |
201 | if (PL_collation_name) { |
202 | ++PL_collation_ix; |
203 | Safefree(PL_collation_name); |
204 | PL_collation_name = NULL; |
205 | } |
206 | PL_collation_standard = TRUE; |
207 | PL_collxfrm_base = 0; |
208 | PL_collxfrm_mult = 2; |
209 | return; |
210 | } |
211 | |
212 | if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { |
213 | ++PL_collation_ix; |
214 | Safefree(PL_collation_name); |
215 | PL_collation_name = stdize_locale(savepv(newcoll)); |
770526c1 |
216 | PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') |
217 | || strEQ(newcoll, "POSIX")); |
98994639 |
218 | |
219 | { |
220 | /* 2: at most so many chars ('a', 'b'). */ |
221 | /* 50: surely no system expands a char more. */ |
222 | #define XFRMBUFSIZE (2 * 50) |
223 | char xbuf[XFRMBUFSIZE]; |
224 | Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); |
225 | Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); |
226 | SSize_t mult = fb - fa; |
227 | if (mult < 1) |
228 | Perl_croak(aTHX_ "strxfrm() gets absurd"); |
eb160463 |
229 | PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; |
98994639 |
230 | PL_collxfrm_mult = mult; |
231 | } |
232 | } |
233 | |
234 | #endif /* USE_LOCALE_COLLATE */ |
235 | } |
236 | |
237 | /* |
238 | * Initialize locale awareness. |
239 | */ |
240 | int |
241 | Perl_init_i18nl10n(pTHX_ int printwarn) |
242 | { |
243 | int ok = 1; |
244 | /* returns |
245 | * 1 = set ok or not applicable, |
246 | * 0 = fallback to C locale, |
247 | * -1 = fallback to C locale failed |
248 | */ |
249 | |
250 | #if defined(USE_LOCALE) |
251 | |
252 | #ifdef USE_LOCALE_CTYPE |
253 | char *curctype = NULL; |
254 | #endif /* USE_LOCALE_CTYPE */ |
255 | #ifdef USE_LOCALE_COLLATE |
256 | char *curcoll = NULL; |
257 | #endif /* USE_LOCALE_COLLATE */ |
258 | #ifdef USE_LOCALE_NUMERIC |
259 | char *curnum = NULL; |
260 | #endif /* USE_LOCALE_NUMERIC */ |
261 | #ifdef __GLIBC__ |
262 | char *language = PerlEnv_getenv("LANGUAGE"); |
263 | #endif |
264 | char *lc_all = PerlEnv_getenv("LC_ALL"); |
265 | char *lang = PerlEnv_getenv("LANG"); |
266 | bool setlocale_failure = FALSE; |
267 | |
268 | #ifdef LOCALE_ENVIRON_REQUIRED |
269 | |
270 | /* |
271 | * Ultrix setlocale(..., "") fails if there are no environment |
272 | * variables from which to get a locale name. |
273 | */ |
274 | |
275 | bool done = FALSE; |
276 | |
277 | #ifdef LC_ALL |
278 | if (lang) { |
279 | if (setlocale(LC_ALL, "")) |
280 | done = TRUE; |
281 | else |
282 | setlocale_failure = TRUE; |
283 | } |
284 | if (!setlocale_failure) { |
285 | #ifdef USE_LOCALE_CTYPE |
286 | if (! (curctype = |
287 | setlocale(LC_CTYPE, |
288 | (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) |
289 | ? "" : Nullch))) |
290 | setlocale_failure = TRUE; |
291 | else |
292 | curctype = savepv(curctype); |
293 | #endif /* USE_LOCALE_CTYPE */ |
294 | #ifdef USE_LOCALE_COLLATE |
295 | if (! (curcoll = |
296 | setlocale(LC_COLLATE, |
297 | (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) |
298 | ? "" : Nullch))) |
299 | setlocale_failure = TRUE; |
300 | else |
301 | curcoll = savepv(curcoll); |
302 | #endif /* USE_LOCALE_COLLATE */ |
303 | #ifdef USE_LOCALE_NUMERIC |
304 | if (! (curnum = |
305 | setlocale(LC_NUMERIC, |
306 | (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) |
307 | ? "" : Nullch))) |
308 | setlocale_failure = TRUE; |
309 | else |
310 | curnum = savepv(curnum); |
311 | #endif /* USE_LOCALE_NUMERIC */ |
312 | } |
313 | |
314 | #endif /* LC_ALL */ |
315 | |
316 | #endif /* !LOCALE_ENVIRON_REQUIRED */ |
317 | |
318 | #ifdef LC_ALL |
319 | if (! setlocale(LC_ALL, "")) |
320 | setlocale_failure = TRUE; |
321 | #endif /* LC_ALL */ |
322 | |
323 | if (!setlocale_failure) { |
324 | #ifdef USE_LOCALE_CTYPE |
325 | if (! (curctype = setlocale(LC_CTYPE, ""))) |
326 | setlocale_failure = TRUE; |
327 | else |
328 | curctype = savepv(curctype); |
329 | #endif /* USE_LOCALE_CTYPE */ |
330 | #ifdef USE_LOCALE_COLLATE |
331 | if (! (curcoll = setlocale(LC_COLLATE, ""))) |
332 | setlocale_failure = TRUE; |
333 | else |
334 | curcoll = savepv(curcoll); |
335 | #endif /* USE_LOCALE_COLLATE */ |
336 | #ifdef USE_LOCALE_NUMERIC |
337 | if (! (curnum = setlocale(LC_NUMERIC, ""))) |
338 | setlocale_failure = TRUE; |
339 | else |
340 | curnum = savepv(curnum); |
341 | #endif /* USE_LOCALE_NUMERIC */ |
342 | } |
343 | |
344 | if (setlocale_failure) { |
345 | char *p; |
346 | bool locwarn = (printwarn > 1 || |
347 | (printwarn && |
348 | (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); |
349 | |
350 | if (locwarn) { |
351 | #ifdef LC_ALL |
352 | |
353 | PerlIO_printf(Perl_error_log, |
354 | "perl: warning: Setting locale failed.\n"); |
355 | |
356 | #else /* !LC_ALL */ |
357 | |
358 | PerlIO_printf(Perl_error_log, |
359 | "perl: warning: Setting locale failed for the categories:\n\t"); |
360 | #ifdef USE_LOCALE_CTYPE |
361 | if (! curctype) |
362 | PerlIO_printf(Perl_error_log, "LC_CTYPE "); |
363 | #endif /* USE_LOCALE_CTYPE */ |
364 | #ifdef USE_LOCALE_COLLATE |
365 | if (! curcoll) |
366 | PerlIO_printf(Perl_error_log, "LC_COLLATE "); |
367 | #endif /* USE_LOCALE_COLLATE */ |
368 | #ifdef USE_LOCALE_NUMERIC |
369 | if (! curnum) |
370 | PerlIO_printf(Perl_error_log, "LC_NUMERIC "); |
371 | #endif /* USE_LOCALE_NUMERIC */ |
372 | PerlIO_printf(Perl_error_log, "\n"); |
373 | |
374 | #endif /* LC_ALL */ |
375 | |
376 | PerlIO_printf(Perl_error_log, |
377 | "perl: warning: Please check that your locale settings:\n"); |
378 | |
379 | #ifdef __GLIBC__ |
380 | PerlIO_printf(Perl_error_log, |
381 | "\tLANGUAGE = %c%s%c,\n", |
382 | language ? '"' : '(', |
383 | language ? language : "unset", |
384 | language ? '"' : ')'); |
385 | #endif |
386 | |
387 | PerlIO_printf(Perl_error_log, |
388 | "\tLC_ALL = %c%s%c,\n", |
389 | lc_all ? '"' : '(', |
390 | lc_all ? lc_all : "unset", |
391 | lc_all ? '"' : ')'); |
392 | |
393 | #if defined(USE_ENVIRON_ARRAY) |
394 | { |
395 | char **e; |
396 | for (e = environ; *e; e++) { |
397 | if (strnEQ(*e, "LC_", 3) |
398 | && strnNE(*e, "LC_ALL=", 7) |
399 | && (p = strchr(*e, '='))) |
400 | PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", |
401 | (int)(p - *e), *e, p + 1); |
402 | } |
403 | } |
404 | #else |
405 | PerlIO_printf(Perl_error_log, |
406 | "\t(possibly more locale environment variables)\n"); |
407 | #endif |
408 | |
409 | PerlIO_printf(Perl_error_log, |
410 | "\tLANG = %c%s%c\n", |
411 | lang ? '"' : '(', |
412 | lang ? lang : "unset", |
413 | lang ? '"' : ')'); |
414 | |
415 | PerlIO_printf(Perl_error_log, |
416 | " are supported and installed on your system.\n"); |
417 | } |
418 | |
419 | #ifdef LC_ALL |
420 | |
421 | if (setlocale(LC_ALL, "C")) { |
422 | if (locwarn) |
423 | PerlIO_printf(Perl_error_log, |
424 | "perl: warning: Falling back to the standard locale (\"C\").\n"); |
425 | ok = 0; |
426 | } |
427 | else { |
428 | if (locwarn) |
429 | PerlIO_printf(Perl_error_log, |
430 | "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); |
431 | ok = -1; |
432 | } |
433 | |
434 | #else /* ! LC_ALL */ |
435 | |
436 | if (0 |
437 | #ifdef USE_LOCALE_CTYPE |
438 | || !(curctype || setlocale(LC_CTYPE, "C")) |
439 | #endif /* USE_LOCALE_CTYPE */ |
440 | #ifdef USE_LOCALE_COLLATE |
441 | || !(curcoll || setlocale(LC_COLLATE, "C")) |
442 | #endif /* USE_LOCALE_COLLATE */ |
443 | #ifdef USE_LOCALE_NUMERIC |
444 | || !(curnum || setlocale(LC_NUMERIC, "C")) |
445 | #endif /* USE_LOCALE_NUMERIC */ |
446 | ) |
447 | { |
448 | if (locwarn) |
449 | PerlIO_printf(Perl_error_log, |
450 | "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); |
451 | ok = -1; |
452 | } |
453 | |
454 | #endif /* ! LC_ALL */ |
455 | |
456 | #ifdef USE_LOCALE_CTYPE |
457 | curctype = savepv(setlocale(LC_CTYPE, Nullch)); |
458 | #endif /* USE_LOCALE_CTYPE */ |
459 | #ifdef USE_LOCALE_COLLATE |
460 | curcoll = savepv(setlocale(LC_COLLATE, Nullch)); |
461 | #endif /* USE_LOCALE_COLLATE */ |
462 | #ifdef USE_LOCALE_NUMERIC |
463 | curnum = savepv(setlocale(LC_NUMERIC, Nullch)); |
464 | #endif /* USE_LOCALE_NUMERIC */ |
465 | } |
466 | else { |
467 | |
468 | #ifdef USE_LOCALE_CTYPE |
469 | new_ctype(curctype); |
470 | #endif /* USE_LOCALE_CTYPE */ |
471 | |
472 | #ifdef USE_LOCALE_COLLATE |
473 | new_collate(curcoll); |
474 | #endif /* USE_LOCALE_COLLATE */ |
475 | |
476 | #ifdef USE_LOCALE_NUMERIC |
477 | new_numeric(curnum); |
478 | #endif /* USE_LOCALE_NUMERIC */ |
b310b053 |
479 | |
98994639 |
480 | } |
481 | |
482 | #endif /* USE_LOCALE */ |
483 | |
ec71e770 |
484 | #ifdef USE_PERLIO |
b310b053 |
485 | { |
fde18df1 |
486 | /* Set PL_utf8locale to TRUE if using PerlIO _and_ |
ec71e770 |
487 | any of the following are true: |
085a54d9 |
488 | - nl_langinfo(CODESET) contains /^utf-?8/i |
61de9fb5 |
489 | - $ENV{LC_ALL} contains /^utf-?8/i |
085a54d9 |
490 | - $ENV{LC_CTYPE} contains /^utf-?8/i |
61de9fb5 |
491 | - $ENV{LANG} contains /^utf-?8/i |
492 | The LC_ALL, LC_CTYPE, LANG obey the usual override |
493 | hierarchy of locale environment variables. (LANGUAGE |
494 | affects only LC_MESSAGES only under glibc.) (If present, |
495 | it overrides LC_MESSAGES for GNU gettext, and it also |
496 | can have more than one locale, separated by spaces, |
497 | in case you need to know.) |
8aa8f774 |
498 | If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) |
a05d7ebb |
499 | are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer |
fde18df1 |
500 | on STDIN, STDOUT, STDERR, _and_ the default open discipline. |
085a54d9 |
501 | */ |
fde18df1 |
502 | bool utf8locale = FALSE; |
b310b053 |
503 | char *codeset = NULL; |
504 | #if defined(HAS_NL_LANGINFO) && defined(CODESET) |
505 | codeset = nl_langinfo(CODESET); |
506 | #endif |
61de9fb5 |
507 | if (codeset) |
fde18df1 |
508 | utf8locale = (ibcmp(codeset, "UTF-8", 5) == 0 || |
509 | ibcmp(codeset, "UTF8", 4) == 0); |
077a72a9 |
510 | #if defined(USE_LOCALE) |
61de9fb5 |
511 | else { /* nl_langinfo(CODESET) is supposed to correctly |
512 | * interpret the locale environment variables, |
513 | * but just in case it fails, let's do this manually. */ |
514 | if (lang) |
fde18df1 |
515 | utf8locale = (ibcmp(lang, "UTF-8", 5) == 0 || |
516 | ibcmp(lang, "UTF8", 4) == 0); |
b310b053 |
517 | #ifdef USE_LOCALE_CTYPE |
61de9fb5 |
518 | if (curctype) |
fde18df1 |
519 | utf8locale = (ibcmp(curctype, "UTF-8", 5) == 0 || |
520 | ibcmp(curctype, "UTF8", 4) == 0); |
b310b053 |
521 | #endif |
61de9fb5 |
522 | if (lc_all) |
fde18df1 |
523 | utf8locale = (ibcmp(lc_all, "UTF-8", 5) == 0 || |
524 | ibcmp(lc_all, "UTF8", 4) == 0); |
61de9fb5 |
525 | } |
fde18df1 |
526 | #endif /* USE_LOCALE */ |
527 | if (utf8locale) |
528 | PL_utf8locale = TRUE; |
529 | } |
a05d7ebb |
530 | /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. |
fde18df1 |
531 | This is an alternative to using the -C command line switch |
532 | (the -C if present will override this). */ |
533 | { |
dd374669 |
534 | const char *p = PerlEnv_getenv("PERL_UNICODE"); |
a05d7ebb |
535 | PL_unicode = p ? parse_unicode_opts(&p) : 0; |
b310b053 |
536 | } |
ec71e770 |
537 | #endif |
b310b053 |
538 | |
98994639 |
539 | #ifdef USE_LOCALE_CTYPE |
540 | if (curctype != NULL) |
541 | Safefree(curctype); |
542 | #endif /* USE_LOCALE_CTYPE */ |
543 | #ifdef USE_LOCALE_COLLATE |
544 | if (curcoll != NULL) |
545 | Safefree(curcoll); |
546 | #endif /* USE_LOCALE_COLLATE */ |
547 | #ifdef USE_LOCALE_NUMERIC |
548 | if (curnum != NULL) |
549 | Safefree(curnum); |
550 | #endif /* USE_LOCALE_NUMERIC */ |
551 | return ok; |
552 | } |
553 | |
554 | /* Backwards compatibility. */ |
555 | int |
556 | Perl_init_i18nl14n(pTHX_ int printwarn) |
557 | { |
558 | return init_i18nl10n(printwarn); |
559 | } |
560 | |
561 | #ifdef USE_LOCALE_COLLATE |
562 | |
563 | /* |
564 | * mem_collxfrm() is a bit like strxfrm() but with two important |
565 | * differences. First, it handles embedded NULs. Second, it allocates |
566 | * a bit more memory than needed for the transformed data itself. |
567 | * The real transformed data begins at offset sizeof(collationix). |
568 | * Please see sv_collxfrm() to see how this is used. |
569 | */ |
166f8a29 |
570 | |
98994639 |
571 | char * |
572 | Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) |
573 | { |
574 | char *xbuf; |
575 | STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ |
576 | |
577 | /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ |
578 | /* the +1 is for the terminating NUL. */ |
579 | |
580 | xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; |
581 | New(171, xbuf, xAlloc, char); |
582 | if (! xbuf) |
583 | goto bad; |
584 | |
585 | *(U32*)xbuf = PL_collation_ix; |
586 | xout = sizeof(PL_collation_ix); |
587 | for (xin = 0; xin < len; ) { |
588 | SSize_t xused; |
589 | |
590 | for (;;) { |
591 | xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); |
592 | if (xused == -1) |
593 | goto bad; |
eb160463 |
594 | if ((STRLEN)xused < xAlloc - xout) |
98994639 |
595 | break; |
596 | xAlloc = (2 * xAlloc) + 1; |
597 | Renew(xbuf, xAlloc, char); |
598 | if (! xbuf) |
599 | goto bad; |
600 | } |
601 | |
602 | xin += strlen(s + xin) + 1; |
603 | xout += xused; |
604 | |
605 | /* Embedded NULs are understood but silently skipped |
606 | * because they make no sense in locale collation. */ |
607 | } |
608 | |
609 | xbuf[xout] = '\0'; |
610 | *xlen = xout - sizeof(PL_collation_ix); |
611 | return xbuf; |
612 | |
613 | bad: |
614 | Safefree(xbuf); |
615 | *xlen = 0; |
616 | return NULL; |
617 | } |
618 | |
619 | #endif /* USE_LOCALE_COLLATE */ |
620 | |