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