/* locale.c
*
* Copyright (c) 2001-2002, Larry Wall
*
* 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 m�el
* o menel aglar elenath!
* Na-chaered palan-d�el
* o galadhremmin ennorath,
* Fanuilos, le linnathon
* nef aear, si nef aearon!
*/
#include "EXTERN.h"
#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"
/*
* 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)
{
char *s;
bool okay = TRUE;
if ((s = strchr(locs, '='))) {
char *t;
okay = FALSE;
if ((t = strchr(s, '.'))) {
char *u;
if ((u = strchr(t, '\n'))) {
if (u[1] == 0) {
STRLEN len = u - s;
Move(s + 1, locs, len, char);
locs[len] = 0;
okay = TRUE;
}
}
}
}
if (!okay)
Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
return locs;
}
void
Perl_set_numeric_radix(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
# ifdef HAS_LOCALECONV
struct lconv* lc;
lc = localeconv();
if (lc && lc->decimal_point) {
if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) {
SvREFCNT_dec(PL_numeric_radix_sv);
PL_numeric_radix_sv = Nullsv;
}
else {
if (PL_numeric_radix_sv)
sv_setpv(PL_numeric_radix_sv, lc->decimal_point);
else
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_ char *newnum)
{
#ifdef USE_LOCALE_NUMERIC
if (! newnum) {
if (PL_numeric_name) {
Safefree(PL_numeric_name);
PL_numeric_name = NULL;
}
PL_numeric_standard = TRUE;
PL_numeric_local = TRUE;
return;
}
if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
Safefree(PL_numeric_name);
PL_numeric_name = stdize_locale(savepv(newnum));
PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
PL_numeric_local = TRUE;
set_numeric_radix();
}
#endif /* USE_LOCALE_NUMERIC */
}
void
Perl_set_numeric_standard(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
if (! PL_numeric_standard) {
setlocale(LC_NUMERIC, "C");
PL_numeric_standard = TRUE;
PL_numeric_local = FALSE;
set_numeric_radix();
}
#endif /* USE_LOCALE_NUMERIC */
}
void
Perl_set_numeric_local(pTHX)
{
#ifdef USE_LOCALE_NUMERIC
if (! PL_numeric_local) {
setlocale(LC_NUMERIC, PL_numeric_name);
PL_numeric_standard = FALSE;
PL_numeric_local = TRUE;
set_numeric_radix();
}
#endif /* USE_LOCALE_NUMERIC */
}
/*
* Set up for a new ctype locale.
*/
void
Perl_new_ctype(pTHX_ char *newctype)
{
#ifdef USE_LOCALE_CTYPE
int i;
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;
}
#endif /* USE_LOCALE_CTYPE */
}
/*
* Set up for a new collation locale.
*/
void
Perl_new_collate(pTHX_ char *newcoll)
{
#ifdef USE_LOCALE_COLLATE
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;
}
if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
++PL_collation_ix;
Safefree(PL_collation_name);
PL_collation_name = stdize_locale(savepv(newcoll));
PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
{
/* 2: at most so many chars ('a', 'b'). */
/* 50: surely no system expands a char more. */
#define XFRMBUFSIZE (2 * 50)
char xbuf[XFRMBUFSIZE];
Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
SSize_t mult = fb - fa;
if (mult < 1)
Perl_croak(aTHX_ "strxfrm() gets absurd");
PL_collxfrm_base = (fa > (Size_t)mult) ? (fa - mult) : 0;
PL_collxfrm_mult = mult;
}
}
#endif /* USE_LOCALE_COLLATE */
}
/*
* Initialize locale awareness.
*/
int
Perl_init_i18nl10n(pTHX_ int printwarn)
{
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
char *curctype = NULL;
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
char *curcoll = NULL;
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
char *curnum = NULL;
#endif /* USE_LOCALE_NUMERIC */
#ifdef __GLIBC__
char *language = PerlEnv_getenv("LANGUAGE");
#endif
char *lc_all = PerlEnv_getenv("LC_ALL");
char *lang = PerlEnv_getenv("LANG");
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
if (! setlocale(LC_ALL, ""))
setlocale_failure = TRUE;
#endif /* LC_ALL */
if (!setlocale_failure) {
#ifdef USE_LOCALE_CTYPE
if (! (curctype = setlocale(LC_CTYPE, "")))
setlocale_failure = TRUE;
else
curctype = savepv(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (! (curcoll = setlocale(LC_COLLATE, "")))
setlocale_failure = TRUE;
else
curcoll = savepv(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (! (curnum = setlocale(LC_NUMERIC, "")))
setlocale_failure = TRUE;
else
curnum = savepv(curnum);
#endif /* USE_LOCALE_NUMERIC */
}
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
new_ctype(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
new_collate(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
new_numeric(curnum);
#endif /* USE_LOCALE_NUMERIC */
}
#endif /* USE_LOCALE */
#ifdef USE_PERLIO
{
/* Set PL_wantutf8 to TRUE if using PerlIO _and_
any of the following are true:
- nl_langinfo(CODESET) contains /^utf-?8/i
- $ENV{LANGUAGE} contains /^utf-?8/i (only if using glibc)
- $ENV{LC_CALL} contains /^utf-?8/i
- $ENV{LC_CTYPE} contains /^utf-?8/i
- $ENV{LANG} contains /^utf-?8/i
If PL_wantutf8 is true, perl.c:S_parse_body()
will turn on the PerlIO :utf8 discipline on STDIN, STDOUT,
STDERR, _and_ the default open discipline.
*/
bool wantutf8 = FALSE;
char *codeset = NULL;
#if defined(HAS_NL_LANGINFO) && defined(CODESET)
codeset = nl_langinfo(CODESET);
#endif
if (codeset &&
(ibcmp(codeset, "UTF-8", 5) == 0 ||
ibcmp(codeset, "UTF8", 4) == 0))
wantutf8 = TRUE;
#if defined(USE_LOCALE)
#ifdef __GLIBC__
if (!wantutf8 && language &&
(ibcmp(language, "UTF-8", 5) == 0 ||
ibcmp(language, "UTF8", 4) == 0))
wantutf8 = TRUE;
#endif
if (!wantutf8 && lc_all &&
(ibcmp(lc_all, "UTF-8", 5) == 0 ||
ibcmp(lc_all, "UTF8", 4) == 0))
wantutf8 = TRUE;
#ifdef USE_LOCALE_CTYPE
if (!wantutf8 && curctype &&
(ibcmp(curctype, "UTF-8", 5) == 0 ||
ibcmp(curctype, "UTF8", 4) == 0))
wantutf8 = TRUE;
#endif
if (!wantutf8 && lang &&
(ibcmp(lang, "UTF-8", 5) == 0 ||
ibcmp(lang, "UTF8", 4) == 0))
wantutf8 = TRUE;
#endif /* USE_LOCALE */
if (wantutf8)
PL_wantutf8 = TRUE;
}
#endif
#ifdef USE_LOCALE_CTYPE
if (curctype != NULL)
Safefree(curctype);
#endif /* USE_LOCALE_CTYPE */
#ifdef USE_LOCALE_COLLATE
if (curcoll != NULL)
Safefree(curcoll);
#endif /* USE_LOCALE_COLLATE */
#ifdef USE_LOCALE_NUMERIC
if (curnum != NULL)
Safefree(curnum);
#endif /* USE_LOCALE_NUMERIC */
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)
{
char *xbuf;
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. */
xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
New(171, xbuf, xAlloc, char);
if (! xbuf)
goto bad;
*(U32*)xbuf = PL_collation_ix;
xout = sizeof(PL_collation_ix);
for (xin = 0; xin < len; ) {
SSize_t xused;
for (;;) {
xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
if (xused == -1)
goto bad;
if ((STRLEN)xused < xAlloc - xout)
break;
xAlloc = (2 * xAlloc) + 1;
Renew(xbuf, xAlloc, char);
if (! xbuf)
goto bad;
}
xin += strlen(s + xin) + 1;
xout += xused;
/* Embedded NULs are understood but silently skipped
* because they make no sense in locale collation. */
}
xbuf[xout] = '\0';
*xlen = xout - sizeof(PL_collation_ix);
return xbuf;
bad:
Safefree(xbuf);
*xlen = 0;
return NULL;
}
#endif /* USE_LOCALE_COLLATE */
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