/* locale.c * * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, * 2000, 2001, 2002, 2003, 2005, by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ /* * A Elbereth Gilthoniel, * silivren penna míriel * o menel aglar elenath! * Na-chaered palan-díriel * o galadhremmin ennorath, * Fanuilos, le linnathon * nef aear, si nef aearon! */ /* utility functions for handling locale-specific stuff like what * character represents the decimal point. */ #include "EXTERN.h" #define PERL_IN_LOCALE_C #include "perl.h" #ifdef I_LOCALE # include #endif #ifdef I_LANGINFO # include #endif #include "reentr.h" #if defined(USE_LOCALE_NUMERIC) || defined(USE_LOCALE_COLLATE) /* * Standardize the locale name from a string returned by 'setlocale'. * * The standard return value of setlocale() is either * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL * (the space-separated values represent the various sublocales, * in some unspecificed order) * * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n", * which is harmful for further use of the string in setlocale(). * */ STATIC char * S_stdize_locale(pTHX_ char *locs) 11508 { 11508 const char *s = strchr(locs, '='); 11508 bool okay = TRUE; 11508 if (s) { ###### const char * const t = strchr(s, '.'); ###### okay = FALSE; ###### if (t) { ###### const char * const u = strchr(t, '\n'); ###### if (u && (u[1] == 0)) { ###### const STRLEN len = u - s; ###### Move(s + 1, locs, len, char); ###### locs[len] = 0; ###### okay = TRUE; } } } 11508 if (!okay) ###### Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs); 11508 return locs; } #endif void Perl_set_numeric_radix(pTHX) 10004 { #ifdef USE_LOCALE_NUMERIC # ifdef HAS_LOCALECONV 10004 struct lconv* lc; 10004 lc = localeconv(); 10004 if (lc && lc->decimal_point) { 10004 if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) { 7981 SvREFCNT_dec(PL_numeric_radix_sv); 7981 PL_numeric_radix_sv = Nullsv; } else { 2023 if (PL_numeric_radix_sv) 810 sv_setpv(PL_numeric_radix_sv, lc->decimal_point); else 1213 PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0); } } else ###### PL_numeric_radix_sv = Nullsv; # endif /* HAS_LOCALECONV */ #endif /* USE_LOCALE_NUMERIC */ } /* * Set up for a new numeric locale. */ void Perl_new_numeric(pTHX_ const char *newnum) 6016 { #ifdef USE_LOCALE_NUMERIC 6016 if (! newnum) { ###### Safefree(PL_numeric_name); ###### PL_numeric_name = NULL; ###### PL_numeric_standard = TRUE; ###### PL_numeric_local = TRUE; ###### return; } 6016 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) { 6004 Safefree(PL_numeric_name); 6004 PL_numeric_name = stdize_locale(savepv(newnum)); 6004 PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0') || strEQ(newnum, "POSIX")); 6004 PL_numeric_local = TRUE; 6004 set_numeric_radix(); } #endif /* USE_LOCALE_NUMERIC */ } void Perl_set_numeric_standard(pTHX) 6536 { #ifdef USE_LOCALE_NUMERIC 6536 if (! PL_numeric_standard) { 2000 setlocale(LC_NUMERIC, "C"); 2000 PL_numeric_standard = TRUE; 2000 PL_numeric_local = FALSE; 2000 set_numeric_radix(); } #endif /* USE_LOCALE_NUMERIC */ } void Perl_set_numeric_local(pTHX) 2031 { #ifdef USE_LOCALE_NUMERIC 2031 if (! PL_numeric_local) { 2000 setlocale(LC_NUMERIC, PL_numeric_name); 2000 PL_numeric_standard = FALSE; 2000 PL_numeric_local = TRUE; 2000 set_numeric_radix(); } #endif /* USE_LOCALE_NUMERIC */ } /* * Set up for a new ctype locale. */ void Perl_new_ctype(pTHX_ const char *newctype) 5514 { #ifdef USE_LOCALE_CTYPE dVAR; 5514 int i; 1417098 for (i = 0; i < 256; i++) { 1411584 if (isUPPER_LC(i)) 161812 PL_fold_locale[i] = toLOWER_LC(i); 1249772 else if (isLOWER_LC(i)) 163276 PL_fold_locale[i] = toUPPER_LC(i); else 1086496 PL_fold_locale[i] = i; } #endif /* USE_LOCALE_CTYPE */ 5514 PERL_UNUSED_ARG(newctype); } /* * Set up for a new collation locale. */ void Perl_new_collate(pTHX_ const char *newcoll) 5514 { #ifdef USE_LOCALE_COLLATE 5514 if (! newcoll) { ###### if (PL_collation_name) { ###### ++PL_collation_ix; ###### Safefree(PL_collation_name); ###### PL_collation_name = NULL; } ###### PL_collation_standard = TRUE; ###### PL_collxfrm_base = 0; ###### PL_collxfrm_mult = 2; ###### return; } 5514 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) { 5504 ++PL_collation_ix; 5504 Safefree(PL_collation_name); 5504 PL_collation_name = stdize_locale(savepv(newcoll)); 5504 PL_collation_standard = ((*newcoll == 'C' && newcoll[1] == '\0') || strEQ(newcoll, "POSIX")); { /* 2: at most so many chars ('a', 'b'). */ /* 50: surely no system expands a char more. */ #define XFRMBUFSIZE (2 * 50) 5504 char xbuf[XFRMBUFSIZE]; 5504 const Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE); 5504 const Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE); 5504 const SSize_t mult = fb - fa; 5504 if (mult < 1) ###### Perl_croak(aTHX_ "strxfrm() gets absurd"); 5504 PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0; 5504 PL_collxfrm_mult = mult; } } #endif /* USE_LOCALE_COLLATE */ } /* * Initialize locale awareness. */ int Perl_init_i18nl10n(pTHX_ int printwarn) 4503 { 4503 int ok = 1; /* returns * 1 = set ok or not applicable, * 0 = fallback to C locale, * -1 = fallback to C locale failed */ #if defined(USE_LOCALE) #ifdef USE_LOCALE_CTYPE 4503 char *curctype = NULL; #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE 4503 char *curcoll = NULL; #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC 4503 char *curnum = NULL; #endif /* USE_LOCALE_NUMERIC */ #ifdef __GLIBC__ 4503 char *language = PerlEnv_getenv("LANGUAGE"); #endif 4503 char *lc_all = PerlEnv_getenv("LC_ALL"); 4503 char *lang = PerlEnv_getenv("LANG"); 4503 bool setlocale_failure = FALSE; #ifdef LOCALE_ENVIRON_REQUIRED /* * Ultrix setlocale(..., "") fails if there are no environment * variables from which to get a locale name. */ bool done = FALSE; #ifdef LC_ALL if (lang) { if (setlocale(LC_ALL, "")) done = TRUE; else setlocale_failure = TRUE; } if (!setlocale_failure) { #ifdef USE_LOCALE_CTYPE if (! (curctype = setlocale(LC_CTYPE, (!done && (lang || PerlEnv_getenv("LC_CTYPE"))) ? "" : Nullch))) setlocale_failure = TRUE; else curctype = savepv(curctype); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE if (! (curcoll = setlocale(LC_COLLATE, (!done && (lang || PerlEnv_getenv("LC_COLLATE"))) ? "" : Nullch))) setlocale_failure = TRUE; else curcoll = savepv(curcoll); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC if (! (curnum = setlocale(LC_NUMERIC, (!done && (lang || PerlEnv_getenv("LC_NUMERIC"))) ? "" : Nullch))) setlocale_failure = TRUE; else curnum = savepv(curnum); #endif /* USE_LOCALE_NUMERIC */ } #endif /* LC_ALL */ #endif /* !LOCALE_ENVIRON_REQUIRED */ #ifdef LC_ALL 4503 if (! setlocale(LC_ALL, "")) ###### setlocale_failure = TRUE; #endif /* LC_ALL */ 4503 if (!setlocale_failure) { #ifdef USE_LOCALE_CTYPE 4503 if (! (curctype = setlocale(LC_CTYPE, ""))) ###### setlocale_failure = TRUE; else 4503 curctype = savepv(curctype); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE 4503 if (! (curcoll = setlocale(LC_COLLATE, ""))) ###### setlocale_failure = TRUE; else 4503 curcoll = savepv(curcoll); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC 4503 if (! (curnum = setlocale(LC_NUMERIC, ""))) ###### setlocale_failure = TRUE; else 4503 curnum = savepv(curnum); #endif /* USE_LOCALE_NUMERIC */ } 4503 if (setlocale_failure) { ###### char *p; ###### bool locwarn = (printwarn > 1 || (printwarn && ###### (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p)))); ###### if (locwarn) { #ifdef LC_ALL ###### PerlIO_printf(Perl_error_log, "perl: warning: Setting locale failed.\n"); #else /* !LC_ALL */ PerlIO_printf(Perl_error_log, "perl: warning: Setting locale failed for the categories:\n\t"); #ifdef USE_LOCALE_CTYPE if (! curctype) PerlIO_printf(Perl_error_log, "LC_CTYPE "); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE if (! curcoll) PerlIO_printf(Perl_error_log, "LC_COLLATE "); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC if (! curnum) PerlIO_printf(Perl_error_log, "LC_NUMERIC "); #endif /* USE_LOCALE_NUMERIC */ PerlIO_printf(Perl_error_log, "\n"); #endif /* LC_ALL */ ###### PerlIO_printf(Perl_error_log, "perl: warning: Please check that your locale settings:\n"); #ifdef __GLIBC__ ###### PerlIO_printf(Perl_error_log, "\tLANGUAGE = %c%s%c,\n", language ? '"' : '(', language ? language : "unset", language ? '"' : ')'); #endif ###### PerlIO_printf(Perl_error_log, "\tLC_ALL = %c%s%c,\n", lc_all ? '"' : '(', lc_all ? lc_all : "unset", lc_all ? '"' : ')'); #if defined(USE_ENVIRON_ARRAY) { ###### char **e; ###### for (e = environ; *e; e++) { ###### if (strnEQ(*e, "LC_", 3) && strnNE(*e, "LC_ALL=", 7) && (p = strchr(*e, '='))) ###### PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n", (int)(p - *e), *e, p + 1); } } #else PerlIO_printf(Perl_error_log, "\t(possibly more locale environment variables)\n"); #endif ###### PerlIO_printf(Perl_error_log, "\tLANG = %c%s%c\n", lang ? '"' : '(', lang ? lang : "unset", lang ? '"' : ')'); ###### PerlIO_printf(Perl_error_log, " are supported and installed on your system.\n"); } #ifdef LC_ALL ###### if (setlocale(LC_ALL, "C")) { ###### if (locwarn) ###### PerlIO_printf(Perl_error_log, "perl: warning: Falling back to the standard locale (\"C\").\n"); ###### ok = 0; } else { ###### if (locwarn) ###### PerlIO_printf(Perl_error_log, "perl: warning: Failed to fall back to the standard locale (\"C\").\n"); ###### ok = -1; } #else /* ! LC_ALL */ if (0 #ifdef USE_LOCALE_CTYPE || !(curctype || setlocale(LC_CTYPE, "C")) #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE || !(curcoll || setlocale(LC_COLLATE, "C")) #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC || !(curnum || setlocale(LC_NUMERIC, "C")) #endif /* USE_LOCALE_NUMERIC */ ) { if (locwarn) PerlIO_printf(Perl_error_log, "perl: warning: Cannot fall back to the standard locale (\"C\").\n"); ok = -1; } #endif /* ! LC_ALL */ #ifdef USE_LOCALE_CTYPE ###### curctype = savepv(setlocale(LC_CTYPE, Nullch)); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE ###### curcoll = savepv(setlocale(LC_COLLATE, Nullch)); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC ###### curnum = savepv(setlocale(LC_NUMERIC, Nullch)); #endif /* USE_LOCALE_NUMERIC */ } else { #ifdef USE_LOCALE_CTYPE 4503 new_ctype(curctype); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE 4503 new_collate(curcoll); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC 4503 new_numeric(curnum); #endif /* USE_LOCALE_NUMERIC */ } #endif /* USE_LOCALE */ #ifdef USE_PERLIO { /* Set PL_utf8locale to TRUE if using PerlIO _and_ any of the following are true: - nl_langinfo(CODESET) contains /^utf-?8/i - $ENV{LC_ALL} contains /^utf-?8/i - $ENV{LC_CTYPE} contains /^utf-?8/i - $ENV{LANG} contains /^utf-?8/i The LC_ALL, LC_CTYPE, LANG obey the usual override hierarchy of locale environment variables. (LANGUAGE affects only LC_MESSAGES only under glibc.) (If present, it overrides LC_MESSAGES for GNU gettext, and it also can have more than one locale, separated by spaces, in case you need to know.) If PL_utf8locale and PL_unicode (set by -C or by $ENV{PERL_UNICODE}) are true, perl.c:S_parse_body() will turn on the PerlIO :utf8 layer on STDIN, STDOUT, STDERR, _and_ the default open discipline. */ 4503 bool utf8locale = FALSE; 4503 char *codeset = NULL; #if defined(HAS_NL_LANGINFO) && defined(CODESET) 4503 codeset = nl_langinfo(CODESET); #endif 4503 if (codeset) 4503 utf8locale = (ibcmp(codeset, "UTF-8", 5) == 0 || ibcmp(codeset, "UTF8", 4) == 0); #if defined(USE_LOCALE) else { /* nl_langinfo(CODESET) is supposed to correctly * interpret the locale environment variables, * but just in case it fails, let's do this manually. */ ###### if (lang) ###### utf8locale = (ibcmp(lang, "UTF-8", 5) == 0 || ibcmp(lang, "UTF8", 4) == 0); #ifdef USE_LOCALE_CTYPE ###### if (curctype) ###### utf8locale = (ibcmp(curctype, "UTF-8", 5) == 0 || ibcmp(curctype, "UTF8", 4) == 0); #endif ###### if (lc_all) ###### utf8locale = (ibcmp(lc_all, "UTF-8", 5) == 0 || ibcmp(lc_all, "UTF8", 4) == 0); } #endif /* USE_LOCALE */ 4503 if (utf8locale) ###### PL_utf8locale = TRUE; } /* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO. This is an alternative to using the -C command line switch (the -C if present will override this). */ { 4503 const char *p = PerlEnv_getenv("PERL_UNICODE"); 4503 PL_unicode = p ? parse_unicode_opts(&p) : 0; } #endif #ifdef USE_LOCALE_CTYPE 4503 Safefree(curctype); #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE 4503 Safefree(curcoll); #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC 4503 Safefree(curnum); #endif /* USE_LOCALE_NUMERIC */ 4503 return ok; } /* Backwards compatibility. */ int Perl_init_i18nl14n(pTHX_ int printwarn) ###### { ###### return init_i18nl10n(printwarn); } #ifdef USE_LOCALE_COLLATE /* * mem_collxfrm() is a bit like strxfrm() but with two important * differences. First, it handles embedded NULs. Second, it allocates * a bit more memory than needed for the transformed data itself. * The real transformed data begins at offset sizeof(collationix). * Please see sv_collxfrm() to see how this is used. */ char * Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen) 569651 { 569651 char *xbuf; 569651 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */ /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */ /* the +1 is for the terminating NUL. */ 569651 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1; 569651 New(171, xbuf, xAlloc, char); 569651 if (! xbuf) ###### goto bad; 569651 *(U32*)xbuf = PL_collation_ix; 569651 xout = sizeof(PL_collation_ix); 1139302 for (xin = 0; xin < len; ) { 1106000 SSize_t xused; 1675651 for (;;) { 1106000 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout); 1106000 if (xused == -1) ###### goto bad; 1106000 if ((STRLEN)xused < xAlloc - xout) 569651 break; 536349 xAlloc = (2 * xAlloc) + 1; 536349 Renew(xbuf, xAlloc, char); 536349 if (! xbuf) ###### goto bad; } 569651 xin += strlen(s + xin) + 1; 569651 xout += xused; /* Embedded NULs are understood but silently skipped * because they make no sense in locale collation. */ } 569651 xbuf[xout] = '\0'; 569651 *xlen = xout - sizeof(PL_collation_ix); 569651 return xbuf; bad: ###### Safefree(xbuf); ###### *xlen = 0; ###### return NULL; } #endif /* USE_LOCALE_COLLATE */ /* * Local variables: * c-indentation-style: bsd * c-basic-offset: 4 * indent-tabs-mode: t * End: * * ex: set ts=8 sts=4 sw=4 noet: */