/* locale.c
*
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2005, 2006, by Larry Wall and others
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ * 2002, 2003, 2005, 2006, 2007, 2008 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!
+ * 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!
+ *
+ * [p.238 of _The Lord of the Rings_, II/i: "Many Meetings"]
*/
/* utility functions for handling locale-specific stuff like what
#define PERL_IN_LOCALE_C
#include "perl.h"
-#ifdef I_LOCALE
-# include <locale.h>
-#endif
-
#ifdef I_LANGINFO
# include <langinfo.h>
#endif
#include "reentr.h"
-#if defined(USE_LOCALE_NUMERIC) || defined(USE_LOCALE_COLLATE)
+#ifdef USE_LOCALE
+
/*
* Standardize the locale name from a string returned by 'setlocale'.
*
- * The standard return value of setlocale() is either
+ * The typical 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 unspecified order). This is not handled by this function.
*
* 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().
+ * which is harmful for further use of the string in setlocale(). This
+ * function removes the trailing new line and everything up through the '='
*
*/
STATIC char *
const char * const s = strchr(locs, '=');
bool okay = TRUE;
+ PERL_ARGS_ASSERT_STDIZE_LOCALE;
+
if (s) {
const char * const t = strchr(s, '.');
okay = FALSE;
return locs;
}
+
#endif
void
sv_setpv(PL_numeric_radix_sv, lc->decimal_point);
else
PL_numeric_radix_sv = newSVpv(lc->decimal_point, 0);
+ if (! is_ascii_string((U8 *) lc->decimal_point, 0)
+ && is_utf8_string((U8 *) lc->decimal_point, 0)
+ && is_cur_LC_category_utf8(LC_NUMERIC))
+ {
+ SvUTF8_on(PL_numeric_radix_sv);
+ }
}
}
else
Perl_new_numeric(pTHX_ const char *newnum)
{
#ifdef USE_LOCALE_NUMERIC
+ char *save_newnum;
dVAR;
if (! newnum) {
return;
}
- if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
+ save_newnum = stdize_locale(savepv(newnum));
+ if (! PL_numeric_name || strNE(PL_numeric_name, save_newnum)) {
Safefree(PL_numeric_name);
- PL_numeric_name = stdize_locale(savepv(newnum));
- PL_numeric_standard = ((*newnum == 'C' && newnum[1] == '\0')
- || strEQ(newnum, "POSIX"));
+ PL_numeric_name = save_newnum;
+ PL_numeric_standard = ((*save_newnum == 'C' && save_newnum[1] == '\0')
+ || strEQ(save_newnum, "POSIX"));
PL_numeric_local = TRUE;
set_numeric_radix();
}
+ else {
+ Safefree(save_newnum);
+ }
#endif /* USE_LOCALE_NUMERIC */
}
{
#ifdef USE_LOCALE_CTYPE
dVAR;
- int i;
+ UV i;
+
+ PERL_ARGS_ASSERT_NEW_CTYPE;
for (i = 0; i < 256; i++) {
- if (isUPPER_LC(i))
- PL_fold_locale[i] = toLOWER_LC(i);
- else if (isLOWER_LC(i))
- PL_fold_locale[i] = toUPPER_LC(i);
+ if (isUPPER_LC((U8) i))
+ PL_fold_locale[i] = toLOWER_LC((U8) i);
+ else if (isLOWER_LC((U8) i))
+ PL_fold_locale[i] = toUPPER_LC((U8) i);
else
PL_fold_locale[i] = i;
}
#endif /* USE_LOCALE_CTYPE */
+ PERL_ARGS_ASSERT_NEW_CTYPE;
PERL_UNUSED_ARG(newctype);
PERL_UNUSED_CONTEXT;
}
const Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
const Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
const SSize_t mult = fb - fa;
- if (mult < 1)
- Perl_croak(aTHX_ "strxfrm() gets absurd");
+ if (mult < 1 && !(fa == 0 && fb == 0))
+ Perl_croak(aTHX_ "panic: strxfrm() gets absurd - a => %"UVuf", ab => %"UVuf,
+ (UV) fa, (UV) fb);
PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0;
PL_collxfrm_mult = mult;
}
#ifdef __GLIBC__
char * const language = PerlEnv_getenv("LANGUAGE");
#endif
+ /* NULL uses the existing already set up locale */
+ const char * const setlocale_init = (PerlEnv_getenv("PERL_SKIP_LOCALE_INIT"))
+ ? NULL
+ : "";
char * const lc_all = PerlEnv_getenv("LC_ALL");
char * const lang = PerlEnv_getenv("LANG");
bool setlocale_failure = FALSE;
bool done = FALSE;
-#ifdef LC_ALL
+# ifdef LC_ALL
if (lang) {
- if (setlocale(LC_ALL, ""))
+ if (setlocale(LC_ALL, setlocale_init))
done = TRUE;
else
setlocale_failure = TRUE;
}
if (!setlocale_failure) {
-#ifdef USE_LOCALE_CTYPE
+# ifdef USE_LOCALE_CTYPE
Safefree(curctype);
if (! (curctype =
setlocale(LC_CTYPE,
(!done && (lang || PerlEnv_getenv("LC_CTYPE")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curctype = savepv(curctype);
-#endif /* USE_LOCALE_CTYPE */
-#ifdef USE_LOCALE_COLLATE
+# endif /* USE_LOCALE_CTYPE */
+# ifdef USE_LOCALE_COLLATE
Safefree(curcoll);
if (! (curcoll =
setlocale(LC_COLLATE,
(!done && (lang || PerlEnv_getenv("LC_COLLATE")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curcoll = savepv(curcoll);
-#endif /* USE_LOCALE_COLLATE */
-#ifdef USE_LOCALE_NUMERIC
+# endif /* USE_LOCALE_COLLATE */
+# ifdef USE_LOCALE_NUMERIC
Safefree(curnum);
if (! (curnum =
setlocale(LC_NUMERIC,
(!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curnum = savepv(curnum);
-#endif /* USE_LOCALE_NUMERIC */
+# endif /* USE_LOCALE_NUMERIC */
}
-#endif /* LC_ALL */
+# endif /* LC_ALL */
#endif /* !LOCALE_ENVIRON_REQUIRED */
#ifdef LC_ALL
- if (! setlocale(LC_ALL, ""))
+ if (! setlocale(LC_ALL, setlocale_init))
setlocale_failure = TRUE;
#endif /* LC_ALL */
if (!setlocale_failure) {
#ifdef USE_LOCALE_CTYPE
Safefree(curctype);
- if (! (curctype = setlocale(LC_CTYPE, "")))
+ if (! (curctype = setlocale(LC_CTYPE, setlocale_init)))
setlocale_failure = TRUE;
else
curctype = savepv(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
Safefree(curcoll);
- if (! (curcoll = setlocale(LC_COLLATE, "")))
+ if (! (curcoll = setlocale(LC_COLLATE, setlocale_init)))
setlocale_failure = TRUE;
else
curcoll = savepv(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
Safefree(curnum);
- if (! (curnum = setlocale(LC_NUMERIC, "")))
+ if (! (curnum = setlocale(LC_NUMERIC, setlocale_init)))
setlocale_failure = TRUE;
else
curnum = savepv(curnum);
}
-#endif /* USE_LOCALE */
-
-#ifdef USE_PERLIO
+#if defined(USE_PERLIO) && defined(USE_LOCALE_CTYPE)
{
/* 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.)
+ the current LC_CTYPE locale is UTF-8.
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.
*/
- bool utf8locale = FALSE;
- char *codeset = NULL;
-#if defined(HAS_NL_LANGINFO) && defined(CODESET)
- codeset = nl_langinfo(CODESET);
-#endif
- if (codeset)
- utf8locale = (Perl_ibcmp(aTHX_ codeset, STR_WITH_LEN("UTF-8")) == 0 ||
- Perl_ibcmp(aTHX_ codeset, STR_WITH_LEN("UTF8") ) == 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 = (Perl_ibcmp(aTHX_ lang, STR_WITH_LEN("UTF-8")) == 0 ||
- Perl_ibcmp(aTHX_ lang, STR_WITH_LEN("UTF8") ) == 0);
-#ifdef USE_LOCALE_CTYPE
- if (curctype)
- utf8locale = (Perl_ibcmp(aTHX_ curctype, STR_WITH_LEN("UTF-8")) == 0 ||
- Perl_ibcmp(aTHX_ curctype, STR_WITH_LEN("UTF8") ) == 0);
-#endif
- if (lc_all)
- utf8locale = (Perl_ibcmp(aTHX_ lc_all, STR_WITH_LEN("UTF-8")) == 0 ||
- Perl_ibcmp(aTHX_ lc_all, STR_WITH_LEN("UTF8") ) == 0);
- }
-#endif /* USE_LOCALE */
- if (utf8locale)
- PL_utf8locale = TRUE;
+ PL_utf8locale = is_cur_LC_category_utf8(LC_CTYPE);
}
/* Set PL_unicode to $ENV{PERL_UNICODE} if using PerlIO.
This is an alternative to using the -C command line switch
#ifdef USE_LOCALE_NUMERIC
Safefree(curnum);
#endif /* USE_LOCALE_NUMERIC */
+
+#endif /* USE_LOCALE */
+
return ok;
}
char *xbuf;
STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
+ PERL_ARGS_ASSERT_MEM_COLLXFRM;
+
/* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
/* the +1 is for the terminating NUL. */
*(U32*)xbuf = PL_collation_ix;
xout = sizeof(PL_collation_ix);
for (xin = 0; xin < len; ) {
- SSize_t xused;
+ Size_t xused;
for (;;) {
xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
- if (xused == -1)
+ if (xused >= PERL_INT_MAX)
goto bad;
if ((STRLEN)xused < xAlloc - xout)
break;
#endif /* USE_LOCALE_COLLATE */
+#ifdef USE_LOCALE
+
+STATIC bool
+S_is_cur_LC_category_utf8(pTHX_ int category)
+{
+ /* Returns TRUE if the current locale for 'category' is UTF-8; FALSE
+ * otherwise. 'category' may not be LC_ALL. If the platform doesn't have
+ * nl_langinfo(), this employs a heuristic, which hence could give the
+ * wrong result. It errs on the side of not being a UTF-8 locale. */
+
+ char *save_input_locale = NULL;
+ STRLEN final_pos;
+
+#ifdef LC_ALL
+ assert(category != LC_ALL);
+#endif
+
+ /* First dispose of the trivial cases */
+ save_input_locale = stdize_locale(setlocale(category, NULL));
+ if (! save_input_locale) {
+ return FALSE; /* XXX maybe should croak */
+ }
+ if ((*save_input_locale == 'C' && save_input_locale[1] == '\0')
+ || strEQ(save_input_locale, "POSIX"))
+ {
+ return FALSE;
+ }
+
+ save_input_locale = savepv(save_input_locale);
+
+#if defined(HAS_NL_LANGINFO) && defined(CODESET) && defined(USE_LOCALE_CTYPE)
+
+ { /* Next try nl_langinfo if available */
+
+ char *save_ctype_locale = NULL;
+ char *codeset = NULL;
+
+ if (category != LC_CTYPE) { /* nl_langinfo works only on LC_CTYPE */
+
+ /* Get the current LC_CTYPE locale */
+ save_ctype_locale = stdize_locale(savepv(setlocale(LC_CTYPE, NULL)));
+ if (! save_ctype_locale) {
+ goto cant_use_nllanginfo;
+ }
+
+ /* If LC_CTYPE and the desired category use the same locale, this
+ * means that finding the value for LC_CTYPE is the same as finding
+ * the value for the desired category. Otherwise, switch LC_CTYPE
+ * to the desired category's locale */
+ if (strEQ(save_ctype_locale, save_input_locale)) {
+ Safefree(save_ctype_locale);
+ save_ctype_locale = NULL;
+ }
+ else if (! setlocale(LC_CTYPE, save_input_locale)) {
+ Safefree(save_ctype_locale);
+ goto cant_use_nllanginfo;
+ }
+ }
+
+ /* Here the current LC_CTYPE is set to the locale of the category whose
+ * information is desired. This means that nl_langinfo() should give
+ * the correct results */
+ codeset = savepv(nl_langinfo(CODESET));
+ if (codeset) {
+ bool is_utf8;
+
+ /* If we switched LC_CTYPE, switch back */
+ if (save_ctype_locale) {
+ setlocale(LC_CTYPE, save_ctype_locale);
+ Safefree(save_ctype_locale);
+ }
+
+ is_utf8 = foldEQ(codeset, STR_WITH_LEN("UTF-8"))
+ || foldEQ(codeset, STR_WITH_LEN("UTF8"));
+
+ Safefree(codeset);
+ Safefree(save_input_locale);
+ return is_utf8;
+ }
+
+ }
+ cant_use_nllanginfo:
+
+#endif /* HAS_NL_LANGINFO etc */
+
+ /* nl_langinfo not available or failed somehow. Look at the locale name to
+ * see if it matches qr/UTF -? 8 /ix */
+
+ final_pos = strlen(save_input_locale) - 1;
+ if (final_pos >= 3) {
+ char *name = save_input_locale;
+
+ /* Find next 'U' or 'u' and look from there */
+ while ((name += strcspn(name, "Uu") + 1)
+ <= save_input_locale + final_pos - 2)
+ {
+ if (toFOLD(*(name)) != 't'
+ || toFOLD(*(name + 1)) != 'f')
+ {
+ continue;
+ }
+ name += 2;
+ if (*(name) == '-') {
+ if ((name > save_input_locale + final_pos - 1)) {
+ break;
+ }
+ name++;
+ }
+ if (*(name) == '8') {
+ Safefree(save_input_locale);
+ return TRUE;
+ }
+ }
+ }
+
+#ifdef WIN32
+ /* http://msdn.microsoft.com/en-us/library/windows/desktop/dd317756.aspx */
+ if (final_pos >= 4
+ && *(save_input_locale + final_pos - 0) == '1'
+ && *(save_input_locale + final_pos - 1) == '0'
+ && *(save_input_locale + final_pos - 2) == '0'
+ && *(save_input_locale + final_pos - 3) == '5'
+ && *(save_input_locale + final_pos - 4) == '6')
+ {
+ Safefree(save_input_locale);
+ return TRUE;
+ }
+#endif
+
+ /* Other common encodings are the ISO 8859 series, which aren't UTF-8 */
+ if (instr(save_input_locale, "8859")) {
+ Safefree(save_input_locale);
+ return FALSE;
+ }
+
+#ifdef HAS_LOCALECONV
+
+# ifdef USE_LOCALE_MONETARY
+
+ /* Here, there is nothing in the locale name to indicate whether the locale
+ * is UTF-8 or not. This "name", the return of setlocale(), is actually
+ * defined to be opaque, so we can't really rely on the absence of various
+ * substrings in the name to indicate its UTF-8ness. Look at the locale's
+ * currency symbol. Often that will be in the native script, and if the
+ * symbol isn't in UTF-8, we know that the locale isn't. If it is
+ * non-ASCII UTF-8, we infer that the locale is too.
+ * To do this, like above for LC_CTYPE, we first set LC_MONETARY to the
+ * locale of the desired category, if it isn't that locale already */
+
+ {
+ char *save_monetary_locale = NULL;
+ bool illegal_utf8 = FALSE;
+ bool only_ascii = FALSE;
+ const struct lconv* const lc = localeconv();
+
+ if (category != LC_MONETARY) {
+
+ save_monetary_locale = stdize_locale(savepv(setlocale(LC_MONETARY,
+ NULL)));
+ if (! save_monetary_locale) {
+ goto cant_use_monetary;
+ }
+
+ if (strNE(save_monetary_locale, save_input_locale)) {
+ if (! setlocale(LC_MONETARY, save_input_locale)) {
+ Safefree(save_monetary_locale);
+ goto cant_use_monetary;
+ }
+ }
+ }
+
+ /* Here the current LC_MONETARY is set to the locale of the category
+ * whose information is desired. */
+
+ if (lc && lc->currency_symbol) {
+ if (! is_utf8_string((U8 *) lc->currency_symbol, 0)) {
+ illegal_utf8 = TRUE;
+ }
+ else if (is_ascii_string((U8 *) lc->currency_symbol, 0)) {
+ only_ascii = TRUE;
+ }
+ }
+
+ /* If we changed it, restore LC_MONETARY to its original locale */
+ if (save_monetary_locale) {
+ setlocale(LC_MONETARY, save_monetary_locale);
+ Safefree(save_monetary_locale);
+ }
+
+ Safefree(save_input_locale);
+
+ /* It isn't a UTF-8 locale if the symbol is not legal UTF-8; otherwise
+ * assume the locale is UTF-8 if and only if the symbol is non-ascii
+ * UTF-8. (We can't really tell if the locale is UTF-8 or not if the
+ * symbol is just a '$', so we err on the side of it not being UTF-8)
+ * */
+ return (illegal_utf8)
+ ? FALSE
+ : ! only_ascii;
+
+ }
+ cant_use_monetary:
+
+# endif /* USE_LOCALE_MONETARY */
+#endif /* HAS_LOCALECONV */
+
+#if 0 && defined(HAS_STRERROR) && defined(USE_LOCALE_MESSAGES)
+
+/* This code is ifdefd out because it was found to not be necessary in testing
+ * on our dromedary test machine, which has over 700 locales. There, looking
+ * at just the currency symbol gave essentially the same results as doing this
+ * extra work. Executing this also caused segfaults in miniperl. I left it in
+ * so as to avoid rewriting it if real-world experience indicates that
+ * dromedary is an outlier. Essentially, instead of returning abpve if we
+ * haven't found illegal utf8, we continue on and examine all the strerror()
+ * messages on the platform for utf8ness. If all are ASCII, we still don't
+ * know the answer; but otherwise we have a pretty good indication of the
+ * utf8ness. The reason this doesn't necessarily help much is that the
+ * messages may not have been translated into the locale. The currency symbol
+ * is much more likely to have been translated. The code below would need to
+ * be altered somewhat to just be a continuation of testing the currency
+ * symbol. */
+ int e;
+ unsigned int failures = 0, non_ascii = 0;
+ char *save_messages_locale = NULL;
+
+ /* Like above for LC_CTYPE, we set LC_MESSAGES to the locale of the
+ * desired category, if it isn't that locale already */
+
+ if (category != LC_MESSAGES) {
+
+ save_messages_locale = stdize_locale(savepv(setlocale(LC_MESSAGES,
+ NULL)));
+ if (! save_messages_locale) {
+ goto cant_use_messages;
+ }
+
+ if (strEQ(save_messages_locale, save_input_locale)) {
+ Safefree(save_input_locale);
+ }
+ else if (! setlocale(LC_MESSAGES, save_input_locale)) {
+ Safefree(save_messages_locale);
+ goto cant_use_messages;
+ }
+ }
+
+ /* Here the current LC_MESSAGES is set to the locale of the category
+ * whose information is desired. Look through all the messages */
+
+ for (e = 0;
+#ifdef HAS_SYS_ERRLIST
+ e <= sys_nerr
+#endif
+ ; e++)
+ {
+ const U8* const errmsg = (U8 *) Strerror(e) ;
+ if (!errmsg)
+ break;
+ if (! is_utf8_string(errmsg, 0)) {
+ failures++;
+ break;
+ }
+ else if (! is_ascii_string(errmsg, 0)) {
+ non_ascii++;
+ }
+ }
+
+ /* And, if we changed it, restore LC_MESSAGES to its original locale */
+ if (save_messages_locale) {
+ setlocale(LC_MESSAGES, save_messages_locale);
+ Safefree(save_messages_locale);
+ }
+
+ /* Any non-UTF-8 message means not a UTF-8 locale; if all are valid,
+ * any non-ascii means it is one; otherwise we assume it isn't */
+ return (failures) ? FALSE : non_ascii;
+
+ }
+ cant_use_messages:
+
+#endif
+
+ Safefree(save_input_locale);
+ return FALSE;
+}
+
+#endif
+
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
- * indent-tabs-mode: t
+ * indent-tabs-mode: nil
* End:
*
- * ex: set ts=8 sts=4 sw=4 noet:
+ * ex: set ts=8 sts=4 sw=4 et:
*/
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