/* utility functions for handling locale-specific stuff like what
* character represents the decimal point.
+ *
+ * All C programs have an underlying locale. Perl generally doesn't pay any
+ * attention to it except within the scope of a 'use locale'. For most
+ * categories, it accomplishes this by just using different operations if it is
+ * in such scope than if not. However, various libc functions called by Perl
+ * are affected by the LC_NUMERIC category, so there are macros in perl.h that
+ * are used to toggle between the current locale and the C locale depending on
+ * the desired behavior of those functions at the moment.
*/
#include "EXTERN.h"
#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'.
+ * Standardize the locale name from a string returned by 'setlocale', possibly
+ * modifying that string.
*
* The typical return value of setlocale() is either
* (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
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
PL_numeric_radix_sv = NULL;
+
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "Locale radix is %s\n",
+ (PL_numeric_radix_sv)
+ ? lc->decimal_point
+ : "NULL"));
+
# endif /* HAS_LOCALECONV */
#endif /* USE_LOCALE_NUMERIC */
}
-/*
- * Set up for a new numeric locale.
- */
void
Perl_new_numeric(pTHX_ const char *newnum)
{
#ifdef USE_LOCALE_NUMERIC
+
+ /* Called after all libc setlocale() calls affecting LC_NUMERIC, to tell
+ * core Perl this and that 'newnum' is the name of the new locale.
+ * It installs this locale as the current underlying default.
+ *
+ * The default locale and the C locale can be toggled between by use of the
+ * set_numeric_local() and set_numeric_standard() functions, which should
+ * probably not be called directly, but only via macros like
+ * SET_NUMERIC_STANDARD() in perl.h.
+ *
+ * The toggling is necessary mainly so that a non-dot radix decimal point
+ * character can be output, while allowing internal calculations to use a
+ * dot.
+ *
+ * This sets several interpreter-level variables:
+ * PL_numeric_name The default locale's name: a copy of 'newnum'
+ * PL_numeric_local A boolean indicating if the toggled state is such
+ * that the current locale is the default locale
+ * PL_numeric_standard A boolean indicating if the toggled state is such
+ * that the current locale is the C locale
+ * Note that both of the last two variables can be true at the same time,
+ * if the underlying locale is C. (Toggling is a no-op under these
+ * circumstances.)
+ *
+ * Any code changing the locale (outside this file) should use
+ * POSIX::setlocale, which calls this function. Therefore this function
+ * should be called directly only from this file and from
+ * POSIX::setlocale() */
+
+ 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_local = TRUE;
- set_numeric_radix();
+ 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();
+
#endif /* USE_LOCALE_NUMERIC */
}
#ifdef USE_LOCALE_NUMERIC
dVAR;
+ /* Toggle the LC_NUMERIC locale to C, if not already there. Probably
+ * should use the macros like SET_NUMERIC_STANDARD() in perl.h instead of
+ * calling this directly. */
+
if (! PL_numeric_standard) {
setlocale(LC_NUMERIC, "C");
PL_numeric_standard = TRUE;
PL_numeric_local = FALSE;
set_numeric_radix();
}
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Underlying LC_NUMERIC locale now is C\n"));
#endif /* USE_LOCALE_NUMERIC */
}
#ifdef USE_LOCALE_NUMERIC
dVAR;
+ /* Toggle the LC_NUMERIC locale to the current underlying default, if not
+ * already there. Probably should use the macros like SET_NUMERIC_LOCAL()
+ * in perl.h instead of calling this directly. */
+
if (! PL_numeric_local) {
setlocale(LC_NUMERIC, PL_numeric_name);
PL_numeric_standard = FALSE;
PL_numeric_local = TRUE;
set_numeric_radix();
}
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Underlying LC_NUMERIC locale now is %s\n",
+ PL_numeric_name));
#endif /* USE_LOCALE_NUMERIC */
}
Perl_new_ctype(pTHX_ const char *newctype)
{
#ifdef USE_LOCALE_CTYPE
+
+ /* Called after all libc setlocale() calls affecting LC_CTYPE, to tell
+ * core Perl this and that 'newctype' is the name of the new locale.
+ *
+ * This function sets up the folding arrays for all 256 bytes, assuming
+ * that tofold() is tolc() since fold case is not a concept in POSIX,
+ *
+ * Any code changing the locale (outside this file) should use
+ * POSIX::setlocale, which calls this function. Therefore this function
+ * should be called directly only from this file and from
+ * POSIX::setlocale() */
+
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);
- else
- PL_fold_locale[i] = i;
+ PL_in_utf8_CTYPE_locale = is_cur_LC_category_utf8(LC_CTYPE);
+
+ /* A UTF-8 locale gets standard rules. But note that code still has to
+ * handle this specially because of the three problematic code points */
+ if (PL_in_utf8_CTYPE_locale) {
+ Copy(PL_fold_latin1, PL_fold_locale, 256, U8);
+ }
+ else {
+ for (i = 0; i < 256; i++) {
+ if (isUPPER_LC((U8) i))
+ PL_fold_locale[i] = (U8) toLOWER_LC((U8) i);
+ else if (isLOWER_LC((U8) i))
+ PL_fold_locale[i] = (U8) toUPPER_LC((U8) i);
+ else
+ PL_fold_locale[i] = (U8) i;
+ }
}
#endif /* USE_LOCALE_CTYPE */
PERL_UNUSED_CONTEXT;
}
-/*
- * Set up for a new collation locale.
- */
void
Perl_new_collate(pTHX_ const char *newcoll)
{
#ifdef USE_LOCALE_COLLATE
+
+ /* Called after all libc setlocale() calls affecting LC_COLLATE, to tell
+ * core Perl this and that 'newcoll' is the name of the new locale.
+ *
+ * Any code changing the locale (outside this file) should use
+ * POSIX::setlocale, which calls this function. Therefore this function
+ * should be called directly only from this file and from
+ * POSIX::setlocale() */
+
dVAR;
if (! newcoll) {
#endif /* USE_LOCALE_COLLATE */
}
+#ifdef WIN32
+
+char *
+Perl_my_setlocale(pTHX_ int category, const char* locale)
+{
+ /* This, for Windows, emulates POSIX setlocale() behavior. There is no
+ * difference unless the input locale is "", which means on Windows to get
+ * the machine default, which is set via the computer's "Regional and
+ * Language Options" (or its current equivalent). In POSIX, it instead
+ * means to find the locale from the user's environment. This routine
+ * looks in the environment, and, if anything is found, uses that instead
+ * of going to the machine default. If there is no environment override,
+ * the machine default is used, as normal, by calling the real setlocale()
+ * with "". The POSIX behavior is to use the LC_ALL variable if set;
+ * otherwise to use the particular category's variable if set; otherwise to
+ * use the LANG variable. */
+
+ bool override_LC_ALL = 0;
+ char * result;
+
+ if (locale && strEQ(locale, "")) {
+# ifdef LC_ALL
+ locale = PerlEnv_getenv("LC_ALL");
+ if (! locale) {
+#endif
+ switch (category) {
+# ifdef LC_ALL
+ case LC_ALL:
+ override_LC_ALL = TRUE;
+ break; /* We already know its variable isn't set */
+# endif
+# ifdef USE_LOCALE_TIME
+ case LC_TIME:
+ locale = PerlEnv_getenv("LC_TIME");
+ break;
+# endif
+# ifdef USE_LOCALE_CTYPE
+ case LC_CTYPE:
+ locale = PerlEnv_getenv("LC_CTYPE");
+ break;
+# endif
+# ifdef USE_LOCALE_COLLATE
+ case LC_COLLATE:
+ locale = PerlEnv_getenv("LC_COLLATE");
+ break;
+# endif
+# ifdef USE_LOCALE_MONETARY
+ case LC_MONETARY:
+ locale = PerlEnv_getenv("LC_MONETARY");
+ break;
+# endif
+# ifdef USE_LOCALE_NUMERIC
+ case LC_NUMERIC:
+ locale = PerlEnv_getenv("LC_NUMERIC");
+ break;
+# endif
+# ifdef USE_LOCALE_MESSAGES
+ case LC_MESSAGES:
+ locale = PerlEnv_getenv("LC_MESSAGES");
+ break;
+# endif
+ default:
+ /* This is a category, like PAPER_SIZE that we don't
+ * know about; and so can't provide a wrapper. */
+ break;
+ }
+ if (! locale) {
+ locale = PerlEnv_getenv("LANG");
+ if (! locale) {
+ locale = "";
+ }
+ }
+# ifdef LC_ALL
+ }
+# endif
+ }
+
+ result = setlocale(category, locale);
+
+ if (! override_LC_ALL) {
+ return result;
+ }
+
+ /* Here the input locale was LC_ALL, and we have set it to what is in the
+ * LANG variable or the system default if there is no LANG. But these have
+ * lower priority than the other LC_foo variables, so override it for each
+ * one that is set. (If they are set to "", it means to use the same thing
+ * we just set LC_ALL to, so can skip) */
+# ifdef USE_LOCALE_TIME
+ result = PerlEnv_getenv("LC_TIME");
+ if (result && strNE(result, "")) {
+ setlocale(LC_TIME, result);
+ }
+# endif
+# ifdef USE_LOCALE_CTYPE
+ result = PerlEnv_getenv("LC_CTYPE");
+ if (result && strNE(result, "")) {
+ setlocale(LC_CTYPE, result);
+ }
+# endif
+# ifdef USE_LOCALE_COLLATE
+ result = PerlEnv_getenv("LC_COLLATE");
+ if (result && strNE(result, "")) {
+ setlocale(LC_COLLATE, result);
+ }
+# endif
+# ifdef USE_LOCALE_MONETARY
+ result = PerlEnv_getenv("LC_MONETARY");
+ if (result && strNE(result, "")) {
+ setlocale(LC_MONETARY, result);
+ }
+# endif
+# ifdef USE_LOCALE_NUMERIC
+ result = PerlEnv_getenv("LC_NUMERIC");
+ if (result && strNE(result, "")) {
+ setlocale(LC_NUMERIC, result);
+ }
+# endif
+# ifdef USE_LOCALE_MESSAGES
+ result = PerlEnv_getenv("LC_MESSAGES");
+ if (result && strNE(result, "")) {
+ setlocale(LC_MESSAGES, result);
+ }
+# endif
+
+ return setlocale(LC_ALL, NULL);
+
+}
+
+#endif
+
+
/*
* Initialize locale awareness.
*/
int
Perl_init_i18nl10n(pTHX_ int printwarn)
{
- int ok = 1;
- /* returns
+ /* printwarn is
+ *
+ * 0 if not to output warning when setup locale is bad
+ * 1 if to output warning based on value of PERL_BADLANG
+ * >1 if to output regardless of PERL_BADLANG
+ *
+ * returns
* 1 = set ok or not applicable,
- * 0 = fallback to C locale,
- * -1 = fallback to C locale failed
+ * 0 = fallback to a locale of lower priority
+ * -1 = fallback to all locales failed, not even to the C locale
*/
+ int ok = 1;
+
#if defined(USE_LOCALE)
dVAR;
#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
+ : "";
+ const char* trial_locales[5]; /* 5 = 1 each for "", LC_ALL, LANG, "", C */
+ unsigned int trial_locales_count;
char * const lc_all = PerlEnv_getenv("LC_ALL");
char * const lang = PerlEnv_getenv("LANG");
bool setlocale_failure = FALSE;
+ unsigned int i;
+ char *p;
+ const bool locwarn = (printwarn > 1 ||
+ (printwarn &&
+ (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
+ bool done = FALSE;
+ const char *system_default_locale = NULL;
-#ifdef LOCALE_ENVIRON_REQUIRED
+
+#ifndef LOCALE_ENVIRON_REQUIRED
+ PERL_UNUSED_VAR(done);
+#else
/*
* 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, ""))
+ if (my_setlocale(LC_ALL, setlocale_init))
done = TRUE;
else
setlocale_failure = TRUE;
# ifdef USE_LOCALE_CTYPE
Safefree(curctype);
if (! (curctype =
- setlocale(LC_CTYPE,
+ my_setlocale(LC_CTYPE,
(!done && (lang || PerlEnv_getenv("LC_CTYPE")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curctype = savepv(curctype);
# ifdef USE_LOCALE_COLLATE
Safefree(curcoll);
if (! (curcoll =
- setlocale(LC_COLLATE,
+ my_setlocale(LC_COLLATE,
(!done && (lang || PerlEnv_getenv("LC_COLLATE")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curcoll = savepv(curcoll);
# ifdef USE_LOCALE_NUMERIC
Safefree(curnum);
if (! (curnum =
- setlocale(LC_NUMERIC,
+ my_setlocale(LC_NUMERIC,
(!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
- ? "" : NULL)))
+ ? setlocale_init : NULL)))
setlocale_failure = TRUE;
else
curnum = savepv(curnum);
# endif /* USE_LOCALE_NUMERIC */
+# ifdef USE_LOCALE_MESSAGES
+ if (! my_setlocale(LC_MESSAGES,
+ (!done && (lang || PerlEnv_getenv("LC_MESSAGES")))
+ ? setlocale_init : NULL))
+ {
+ setlocale_failure = TRUE;
+ }
+# endif /* USE_LOCALE_MESSAGES */
+# ifdef USE_LOCALE_MONETARY
+ if (! my_setlocale(LC_MONETARY,
+ (!done && (lang || PerlEnv_getenv("LC_MONETARY")))
+ ? setlocale_init : NULL))
+ {
+ setlocale_failure = TRUE;
+ }
+# endif /* USE_LOCALE_MONETARY */
}
# endif /* LC_ALL */
#endif /* !LOCALE_ENVIRON_REQUIRED */
+ /* We try each locale in the list until we get one that works, or exhaust
+ * the list */
+ trial_locales[0] = setlocale_init;
+ trial_locales_count = 1;
+ for (i= 0; i < trial_locales_count; i++) {
+ const char * trial_locale = trial_locales[i];
+
+ if (i > 0) {
+
+ /* XXX This is to preserve old behavior for LOCALE_ENVIRON_REQUIRED
+ * when i==0, but I (khw) don't think that behavior makes much
+ * sense */
+ setlocale_failure = FALSE;
+
+#ifdef WIN32
+
+ /* On Windows machines, an entry of "" after the 0th means to use
+ * the system default locale, which we now proceed to get. */
+ if (strEQ(trial_locale, "")) {
+ unsigned int j;
+
+ /* Note that this may change the locale, but we are going to do
+ * that anyway just below */
+ system_default_locale = setlocale(LC_ALL, "");
+
+ /* Skip if invalid or it's already on the list of locales to
+ * try */
+ if (! system_default_locale) {
+ goto next_iteration;
+ }
+ for (j = 0; j < trial_locales_count; j++) {
+ if (strEQ(system_default_locale, trial_locales[j])) {
+ goto next_iteration;
+ }
+ }
+
+ trial_locale = system_default_locale;
+ }
+#endif
+ }
+
#ifdef LC_ALL
- if (! setlocale(LC_ALL, ""))
- setlocale_failure = TRUE;
+ if (! my_setlocale(LC_ALL, trial_locale)) {
+ setlocale_failure = TRUE;
+ }
+ else {
+ /* Since LC_ALL succeeded, it should have changed all the other
+ * categories it can to its value; so we massage things so that the
+ * setlocales below just return their category's current values.
+ * This adequately handles the case in NetBSD where LC_COLLATE may
+ * not be defined for a locale, and setting it individually will
+ * fail, whereas setting LC_ALL suceeds, leaving LC_COLLATE set to
+ * the POSIX locale. */
+ trial_locale = NULL;
+ }
#endif /* LC_ALL */
- if (!setlocale_failure) {
+ if (!setlocale_failure) {
#ifdef USE_LOCALE_CTYPE
- Safefree(curctype);
- if (! (curctype = setlocale(LC_CTYPE, "")))
- setlocale_failure = TRUE;
- else
- curctype = savepv(curctype);
+ Safefree(curctype);
+ if (! (curctype = my_setlocale(LC_CTYPE, trial_locale)))
+ setlocale_failure = TRUE;
+ else
+ curctype = savepv(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
- Safefree(curcoll);
- if (! (curcoll = setlocale(LC_COLLATE, "")))
- setlocale_failure = TRUE;
- else
- curcoll = savepv(curcoll);
+ Safefree(curcoll);
+ if (! (curcoll = my_setlocale(LC_COLLATE, trial_locale)))
+ setlocale_failure = TRUE;
+ else
+ curcoll = savepv(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
- Safefree(curnum);
- if (! (curnum = setlocale(LC_NUMERIC, "")))
- setlocale_failure = TRUE;
- else
- curnum = savepv(curnum);
+ Safefree(curnum);
+ if (! (curnum = my_setlocale(LC_NUMERIC, trial_locale)))
+ setlocale_failure = TRUE;
+ else
+ curnum = savepv(curnum);
#endif /* USE_LOCALE_NUMERIC */
- }
-
- if (setlocale_failure) {
- char *p;
- const bool locwarn = (printwarn > 1 ||
- (printwarn &&
- (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
-
- if (locwarn) {
+#ifdef USE_LOCALE_MESSAGES
+ if (! (my_setlocale(LC_MESSAGES, trial_locale)))
+ setlocale_failure = TRUE;
+#endif /* USE_LOCALE_MESSAGES */
+#ifdef USE_LOCALE_MONETARY
+ if (! (my_setlocale(LC_MONETARY, trial_locale)))
+ setlocale_failure = TRUE;
+#endif /* USE_LOCALE_MONETARY */
+
+ if (! setlocale_failure) { /* Success */
+ break;
+ }
+ }
+
+ /* Here, something failed; will need to try a fallback. */
+ ok = 0;
+
+ if (i == 0) {
+ unsigned int j;
+
+ if (locwarn) { /* Output failure info only on the first one */
#ifdef LC_ALL
- PerlIO_printf(Perl_error_log,
- "perl: warning: Setting locale failed.\n");
+ 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");
+ 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 ");
+ 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 ");
+ 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 ");
+ if (! curnum)
+ PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
#endif /* USE_LOCALE_NUMERIC */
- PerlIO_printf(Perl_error_log, "\n");
+ PerlIO_printf(Perl_error_log, "and possibly others\n");
#endif /* LC_ALL */
- PerlIO_printf(Perl_error_log,
- "perl: warning: Please check that your locale settings:\n");
+ 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 ? '"' : ')');
+ 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 ? '"' : ')');
+ 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);
- }
- }
+ {
+ 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");
+ 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,
+ "\tLANG = %c%s%c\n",
+ lang ? '"' : '(',
+ lang ? lang : "unset",
+ lang ? '"' : ')');
+
+ PerlIO_printf(Perl_error_log,
+ " are supported and installed on your system.\n");
+ }
+
+ /* Calculate what fallback locales to try. We have avoided this
+ * until we have to, becuase failure is quite unlikely. This will
+ * usually change the upper bound of the loop we are in.
+ *
+ * Since the system's default way of setting the locale has not
+ * found one that works, We use Perl's defined ordering: LC_ALL,
+ * LANG, and the C locale. We don't try the same locale twice, so
+ * don't add to the list if already there. (On POSIX systems, the
+ * LC_ALL element will likely be a repeat of the 0th element "",
+ * but there's no harm done by doing it explicitly */
+ if (lc_all) {
+ for (j = 0; j < trial_locales_count; j++) {
+ if (strEQ(lc_all, trial_locales[j])) {
+ goto done_lc_all;
+ }
+ }
+ trial_locales[trial_locales_count++] = lc_all;
+ }
+ done_lc_all:
+
+ if (lang) {
+ for (j = 0; j < trial_locales_count; j++) {
+ if (strEQ(lang, trial_locales[j])) {
+ goto done_lang;
+ }
+ }
+ trial_locales[trial_locales_count++] = lang;
+ }
+ done_lang:
+
+#if defined(WIN32) && defined(LC_ALL)
+ /* For Windows, we also try the system default locale before "C".
+ * (If there exists a Windows without LC_ALL we skip this because
+ * it gets too complicated. For those, the "C" is the next
+ * fallback possibility). The "" is the same as the 0th element of
+ * the array, but the code at the loop above knows to treat it
+ * differently when not the 0th */
+ trial_locales[trial_locales_count++] = "";
+#endif
- PerlIO_printf(Perl_error_log,
- " are supported and installed on your system.\n");
- }
+ for (j = 0; j < trial_locales_count; j++) {
+ if (strEQ("C", trial_locales[j])) {
+ goto done_C;
+ }
+ }
+ trial_locales[trial_locales_count++] = "C";
-#ifdef LC_ALL
+ done_C: ;
+ } /* end of first time through the loop */
- 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;
- }
+#ifdef WIN32
+ next_iteration: ;
+#endif
-#else /* ! LC_ALL */
+ } /* end of looping through the trial locales */
- 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;
- }
+ if (ok < 1) { /* If we tried to fallback */
+ const char* msg;
+ if (! setlocale_failure) { /* fallback succeeded */
+ msg = "Falling back to";
+ }
+ else { /* fallback failed */
+
+ /* We dropped off the end of the loop, so have to decrement i to
+ * get back to the value the last time through */
+ i--;
-#endif /* ! LC_ALL */
+ ok = -1;
+ msg = "Failed to fall back to";
+ /* To continue, we should use whatever values we've got */
#ifdef USE_LOCALE_CTYPE
- Safefree(curctype);
- curctype = savepv(setlocale(LC_CTYPE, NULL));
+ Safefree(curctype);
+ curctype = savepv(setlocale(LC_CTYPE, NULL));
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
- Safefree(curcoll);
- curcoll = savepv(setlocale(LC_COLLATE, NULL));
+ Safefree(curcoll);
+ curcoll = savepv(setlocale(LC_COLLATE, NULL));
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
- Safefree(curnum);
- curnum = savepv(setlocale(LC_NUMERIC, NULL));
+ Safefree(curnum);
+ curnum = savepv(setlocale(LC_NUMERIC, NULL));
#endif /* USE_LOCALE_NUMERIC */
- }
- else {
+ }
+
+ if (locwarn) {
+ const char * description;
+ const char * name = "";
+ if (strEQ(trial_locales[i], "C")) {
+ description = "the standard locale";
+ name = "C";
+ }
+ else if (strEQ(trial_locales[i], "")) {
+ description = "the system default locale";
+ if (system_default_locale) {
+ name = system_default_locale;
+ }
+ }
+ else {
+ description = "a fallback locale";
+ name = trial_locales[i];
+ }
+ if (name && strNE(name, "")) {
+ PerlIO_printf(Perl_error_log,
+ "perl: warning: %s %s (\"%s\").\n", msg, description, name);
+ }
+ else {
+ PerlIO_printf(Perl_error_log,
+ "perl: warning: %s %s.\n", msg, description);
+ }
+ }
+ } /* End of tried to fallback */
#ifdef USE_LOCALE_CTYPE
new_ctype(curctype);
new_numeric(curnum);
#endif /* USE_LOCALE_NUMERIC */
- }
-
-#endif /* USE_LOCALE */
+#if defined(USE_PERLIO) && defined(USE_LOCALE_CTYPE)
+ /* Set PL_utf8locale to TRUE if using PerlIO _and_ 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. */
+ PL_utf8locale = is_cur_LC_category_utf8(LC_CTYPE);
-#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.
- */
- bool utf8locale = FALSE;
- char *codeset = NULL;
-#if defined(HAS_NL_LANGINFO) && defined(CODESET)
- codeset = nl_langinfo(CODESET);
-#endif
- if (codeset)
- utf8locale = (foldEQ(codeset, STR_WITH_LEN("UTF-8"))
- || foldEQ(codeset, STR_WITH_LEN("UTF8") ));
-#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 = (foldEQ(lang, STR_WITH_LEN("UTF-8"))
- || foldEQ(lang, STR_WITH_LEN("UTF8") ));
-#ifdef USE_LOCALE_CTYPE
- if (curctype)
- utf8locale = (foldEQ(curctype, STR_WITH_LEN("UTF-8"))
- || foldEQ(curctype, STR_WITH_LEN("UTF8") ));
-#endif
- if (lc_all)
- utf8locale = (foldEQ(lc_all, STR_WITH_LEN("UTF-8"))
- || foldEQ(lc_all, STR_WITH_LEN("UTF8") ));
- }
-#endif /* USE_LOCALE */
- 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). */
#ifdef USE_LOCALE_NUMERIC
Safefree(curnum);
#endif /* USE_LOCALE_NUMERIC */
+
+#endif /* USE_LOCALE */
+
return ok;
}
+
#ifdef USE_LOCALE_COLLATE
/*
#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(), nor MB_CUR_MAX, 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 = setlocale(category, NULL);
+ if (! save_input_locale) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Could not find current locale for category %d\n",
+ category));
+ return FALSE; /* XXX maybe should croak */
+ }
+ save_input_locale = stdize_locale(savepv(save_input_locale));
+ if ((*save_input_locale == 'C' && save_input_locale[1] == '\0')
+ || strEQ(save_input_locale, "POSIX"))
+ {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Current locale for category %d is %s\n",
+ category, save_input_locale));
+ Safefree(save_input_locale);
+ return FALSE;
+ }
+
+#if defined(USE_LOCALE_CTYPE) \
+ && (defined(MB_CUR_MAX) || (defined(HAS_NL_LANGINFO) && defined(CODESET)))
+
+ { /* Next try nl_langinfo or MB_CUR_MAX if available */
+
+ char *save_ctype_locale = NULL;
+ bool is_utf8;
+
+ if (category != LC_CTYPE) { /* These work only on LC_CTYPE */
+
+ /* Get the current LC_CTYPE locale */
+ save_ctype_locale = stdize_locale(savepv(setlocale(LC_CTYPE, NULL)));
+ if (! save_ctype_locale) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Could not find current locale for LC_CTYPE\n"));
+ 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)) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Could not change LC_CTYPE locale to %s\n",
+ save_input_locale));
+ Safefree(save_ctype_locale);
+ goto cant_use_nllanginfo;
+ }
+ }
+
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "Current LC_CTYPE locale=%s\n",
+ save_input_locale));
+
+ /* Here the current LC_CTYPE is set to the locale of the category whose
+ * information is desired. This means that nl_langinfo() and MB_CUR_MAX
+ * should give the correct results */
+
+# if defined(HAS_NL_LANGINFO) && defined(CODESET)
+ {
+ char *codeset = savepv(nl_langinfo(CODESET));
+ if (codeset && strNE(codeset, "")) {
+
+ /* 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"));
+
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "\tnllanginfo returned CODESET '%s'; ?UTF8 locale=%d\n",
+ codeset, is_utf8));
+ Safefree(codeset);
+ Safefree(save_input_locale);
+ return is_utf8;
+ }
+ }
+
+# endif
+# ifdef MB_CUR_MAX
+
+ /* Here, either we don't have nl_langinfo, or it didn't return a
+ * codeset. Try MB_CUR_MAX */
+
+ /* Standard UTF-8 needs at least 4 bytes to represent the maximum
+ * Unicode code point. Since UTF-8 is the only non-single byte
+ * encoding we handle, we just say any such encoding is UTF-8, and if
+ * turns out to be wrong, other things will fail */
+ is_utf8 = MB_CUR_MAX >= 4;
+
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "\tMB_CUR_MAX=%d; ?UTF8 locale=%d\n",
+ (int) MB_CUR_MAX, is_utf8));
+
+ Safefree(save_input_locale);
+
+# ifdef HAS_MBTOWC
+
+ /* ... But, most system that have MB_CUR_MAX will also have mbtowc(),
+ * since they are both in the C99 standard. We can feed a known byte
+ * string to the latter function, and check that it gives the expected
+ * result */
+ if (is_utf8) {
+ wchar_t wc;
+ GCC_DIAG_IGNORE(-Wunused-result);
+ (void) mbtowc(&wc, NULL, 0); /* Reset any shift state */
+ GCC_DIAG_RESTORE;
+ errno = 0;
+ if (mbtowc(&wc, HYPHEN_UTF8, strlen(HYPHEN_UTF8))
+ != strlen(HYPHEN_UTF8)
+ || wc != (wchar_t) 0x2010)
+ {
+ is_utf8 = FALSE;
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "\thyphen=U+%x\n", wc));
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "\treturn from mbtowc=%d; errno=%d; ?UTF8 locale=0\n",
+ mbtowc(&wc, HYPHEN_UTF8, strlen(HYPHEN_UTF8)), errno));
+ }
+ }
+# endif
+
+ /* If we switched LC_CTYPE, switch back */
+ if (save_ctype_locale) {
+ setlocale(LC_CTYPE, save_ctype_locale);
+ Safefree(save_ctype_locale);
+ }
+
+ return is_utf8;
+# endif
+ }
+
+ 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);
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Locale %s ends with UTF-8 in name\n",
+ save_input_locale));
+ return TRUE;
+ }
+ }
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Locale %s doesn't end with UTF-8 in name\n",
+ save_input_locale));
+ }
+
+#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')
+ {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Locale %s ends with 10056 in name, is UTF-8 locale\n",
+ save_input_locale));
+ 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")) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Locale %s has 8859 in name, not UTF-8 locale\n",
+ save_input_locale));
+ 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) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Could not find current locale for LC_MONETARY\n"));
+ goto cant_use_monetary;
+ }
+
+ if (strNE(save_monetary_locale, save_input_locale)) {
+ if (! setlocale(LC_MONETARY, save_input_locale)) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Could not change LC_MONETARY locale to %s\n",
+ 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)) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Currency symbol for %s is not legal UTF-8\n",
+ save_input_locale));
+ illegal_utf8 = TRUE;
+ }
+ else if (is_ascii_string((U8 *) lc->currency_symbol, 0)) {
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "Currency symbol for %s contains only ASCII; can't use for determining if UTF-8 locale\n", save_input_locale));
+ 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)
+ * */
+ DEBUG_L(PerlIO_printf(Perl_debug_log, "\tis_utf8=%d\n", (illegal_utf8)
+ ? FALSE
+ : ! only_ascii));
+ 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
+
+ DEBUG_L(PerlIO_printf(Perl_debug_log,
+ "Assuming locale %s is not a UTF-8 locale\n",
+ save_input_locale));
+ Safefree(save_input_locale);
+ return FALSE;
+}
+
+#endif
+
/*
* Local variables:
* c-indentation-style: bsd
https://perl5.git.perl.org / perl5.git / blobdiff