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windows-nt/Source/XPSP1/NT/base/crts/crtw32/misc/setlocal.c

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/***
*setlocal.c - Contains the setlocale function
*
* Copyright (c) 1988-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Contains the setlocale() function.
*
*Revision History:
* 03-21-89 JCR Module created.
* 09-25-89 GJF Fixed copyright. Checked for compatibility with Win 3.0
* 09-25-90 KRS Major rewrite--support more than "C" locale if _INTL.
* 11-05-91 ETC Get 09-25-90 working for C and "" locales; separate
* setlocal.h; add Init functions.
* 12-05-91 ETC Separate nlsdata.c; add mt support; remove calls to
* itself.
* 12-20-91 ETC Added _getlocaleinfo api interface function.
* 09-25-92 KRS Fix for latest NLSAPI changes, etc.
* 01-25-93 KRS Fix for latest changes, clean up code, etc.
* 02-02-93 CFW Many modifications and bug fixes (all under _INTL).
* 02-08-93 CFW Bug fixes and casts to avoid warnings (all under _INTL).
* 02-17-93 CFW Removed re-call of init() functions in case of failure.
* 03-01-93 CFW Check GetQualifiedLocale return value.
* 03-02-93 CFW Added POSIX conformance, check environment variables.
* 03-09-93 CFW Set CP to CP_ACP when changing to C locale.
* 03-17-93 CFW Change expand to expandlocale, prepend _ to internal
* functions, lots of POSIX fixup.
* 03-23-93 CFW Add _ to GetQualifiedLocale call.
* 03-24-93 CFW Change to _get_qualified_locale, support ".codepage".
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
* 05-10-93 CFW Disallow setlocale(LC_*, ".").
* 05-24-93 CFW Clean up file (brief is evil).
* 09-15-93 CFW Use ANSI conformant "__" names.
* 02-04-94 CFW Remove unused param.
* 04-15-94 GJF Moved prototypes for locale category initialization
* functions to setlocal.h. Made definitions for
* __lc_category, cacheid, cachecp, cachein and cacheout
* conditional on DLL_FOR_WIN32S. Made _clocalestr into
* a global for DLL_FOR_WIN32S so that crtlib.c may use
* it.
* 09-06-94 CFW Remove _INTL switch.
* 09-06-94 CFW Merge non-Win32.
* 01-10-95 CFW Debug CRT allocs.
* 09-25-95 GJF New locking scheme for functions which set or
* reference locale information.
* 05-02-96 SKS Variables _setlc_active and __unguarded_readlc_active
* are used by MSVCP42*.DLL and so must be _CRTIMP.
* 07-09-97 GJF Made __lc_category selectany. Also, removed obsolete
* DLL_FOR_WIN32S support.
* 01-12-98 GJF Use _lc_collate_cp codepage.
* 02-27-98 RKP Add 64 bit support.
* 09-10-98 GJF Revised multithread support based on threadlocinfo
* struct.
* 09-21-98 GJF No need to lock or update threadlocinfo for setlocale
* calls which only read info.
* 11-06-98 GJF In __lc_strtolc, make sure you don't overflow
* names->szCodePage.
* 12-08-98 GJF Fixed __updatetlocinfo (several errors).
* 01-04-99 GJF Changes for 64-bit size_t.
* 01-18-99 GJF In MT models, setlocale needs to check if the old
* __ptlocinfo needs to be freed up. Also, unrelated,
* have _setlocale_get_all return NULL if malloc fails.
* 03-02-99 KRS Partially back out previous fix for now. (per BryanT)
* 03-20-99 GJF Added more reference counters (restoring fix)
* 04-24-99 PML Added __lconv_intl_refcount
* 01-26-00 GB Modified _setlocale_cat. Added _first_127char,
* _ctype_loc_style and __lc_clike
* 08-18-00 GB Fixed problems with __lc_clike stuff.
* 09-06-00 GB Made pwctype independent of locale.
* 10-12-00 GB Compared requested locale to current locale for
* requested category in setlocale-set_cat. Performance
* enhancement.
* 11-05-00 PML Fixed double-free of __lconv_mon_refcount and
* lconv_num_refcount (vs7#181380)
* 01-29-01 GB Added _func function version of data variable used in msvcprt.lib
* to work with STATIC_CPPLIB
*
*******************************************************************************/
#include <locale.h>
#if !defined(_WIN32) && !defined(_POSIX_)
static char _clocalestr[] = "C";
#else /* _WIN32/_POSIX_ */
#include <cruntime.h>
#include <mtdll.h>
#include <malloc.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h> /* for strtol */
#include <setlocal.h>
#include <dbgint.h>
#include <ctype.h>
#include <awint.h>
/* C locale */
static char _clocalestr[] = "C";
#ifdef _POSIX_
static char _posixlocalestr[] = "POSIX";
#endif
#define _LOC_CCACHE 5 // Cache of last 5 locale changed and if they are clike.
__declspec(selectany) struct {
const char * catname;
char * locale;
int (* init)(void);
} __lc_category[LC_MAX-LC_MIN+1] = {
/* code assumes locale initialization is "_clocalestr" */
{ "LC_ALL", NULL, __init_dummy /* never called */ },
{ "LC_COLLATE", _clocalestr, __init_collate },
{ "LC_CTYPE", _clocalestr, __init_ctype },
{ "LC_MONETARY",_clocalestr, __init_monetary },
{ "LC_NUMERIC", _clocalestr, __init_numeric },
{ "LC_TIME", _clocalestr, __init_time }
};
struct _is_ctype_compatible {
unsigned long id;
int is_clike;
};
/* First 127 character type for CLOCALE */
static const short _ctype_loc_style[] = {
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_SPACE | _CONTROL | _BLANK,
_SPACE | _CONTROL,
_SPACE | _CONTROL,
_SPACE | _CONTROL,
_SPACE | _CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_CONTROL,
_SPACE | _BLANK,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_DIGIT | _HEX,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_UPPER | _HEX | C1_ALPHA,
_UPPER | _HEX | C1_ALPHA,
_UPPER | _HEX | C1_ALPHA,
_UPPER | _HEX | C1_ALPHA,
_UPPER | _HEX | C1_ALPHA,
_UPPER | _HEX | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_UPPER | C1_ALPHA,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_LOWER | _HEX | C1_ALPHA,
_LOWER | _HEX | C1_ALPHA,
_LOWER | _HEX | C1_ALPHA,
_LOWER | _HEX | C1_ALPHA,
_LOWER | _HEX | C1_ALPHA,
_LOWER | _HEX | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_LOWER | C1_ALPHA,
_PUNCT,
_PUNCT,
_PUNCT,
_PUNCT,
_CONTROL
};
static const char _first_127char[] = {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68,
69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85,
86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100,101,102,
103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,
120,121,122,123,124,125,126,127
};
#ifdef _MT
extern unsigned short *__ctype1; /* defined in initctyp.c */
extern struct __lc_time_data __lc_time_c; /* defined in strftime.c */
extern struct __lc_time_data *__lc_time_curr; /* defined in strftime.c */
extern struct __lc_time_data *__lc_time_intl; /* defined in inittime.c */
/*
* initial locale information struct, set to the C locale. Used only until the
* first call to setlocale()
*/
threadlocinfo __initiallocinfo = {
1, /* refcount */
_CLOCALECP, /* lc_codepage */
_CLOCALECP, /* lc_collate_cp */
{ _CLOCALEHANDLE, /* lc_handle[6] */
_CLOCALEHANDLE,
_CLOCALEHANDLE,
_CLOCALEHANDLE,
_CLOCALEHANDLE,
_CLOCALEHANDLE },
1, /* lc_clike */
1, /* mb_cur_max */
NULL, /* lconv_intl_refcount */
NULL, /* lconv_num_refcount */
NULL, /* lconv_mon_refcount */
&__lconv_c, /* lconv */
NULL, /* lconv_intl */
NULL, /* ctype1_refcount */
NULL, /* ctype1 */
_ctype + 1, /* pctype */
&__lc_time_c, /* lc_time_curr */
NULL /* lc_time_intl */
};
/*
* global pointer to the current per-thread locale information structure.
*/
pthreadlocinfo __ptlocinfo = &__initiallocinfo;
/*
* Flag indicating whether or not setlocale() is active. Its value is the
* number of setlocale() calls currently active.
*/
_CRTIMP int __setlc_active;
/* These functions are for enabling STATIC_CPPLIB functionality */
_CRTIMP int __cdecl ___setlc_active_func(void)
{
return __setlc_active;
}
/*
* Flag indicating whether or not a function which references the locale
* without having locked it is active. Its value is the number of such
* functions.
*/
_CRTIMP int __unguarded_readlc_active;
/* These functions are for enabling STATIC_CPPLIB functionality */
_CRTIMP int * __cdecl ___unguarded_readlc_active_add_func(void)
{
return &__unguarded_readlc_active;
}
#endif /* _MT */
/* helper function prototypes */
char * _expandlocale(char *, char *, LC_ID *, UINT *, int);
void _strcats(char *, int, ...);
void __lc_lctostr(char *, const LC_STRINGS *);
int __lc_strtolc(LC_STRINGS *, const char *);
static char * __cdecl _setlocale_set_cat(int, const char *);
static char * __cdecl _setlocale_get_all(void);
#ifdef _MT
extern int * __lconv_intl_refcount;
extern int * __lconv_num_refcount;
extern int * __lconv_mon_refcount;
extern int * __ctype1_refcount;
static pthreadlocinfo __cdecl __updatetlocinfo_lk(void);
static char * __cdecl _setlocale_lk(int, const char *);
void __cdecl __free_lconv_mon(struct lconv *);
void __cdecl __free_lconv_num(struct lconv *);
void __cdecl __free_lc_time(struct __lc_time_data *);
#endif
#endif /* _WIN32/_POSIX_ */
#ifdef _MT
/***
*__freetlocinfo() - free threadlocinfo
*
*Purpose:
* Free up the per-thread locale info structure specified by the passed
* pointer.
*
*Entry:
* pthreadlocinfo ptloci
*
*Exit:
*
*Exceptions:
*
*******************************************************************************/
void __cdecl __freetlocinfo (
pthreadlocinfo ptloci
)
{
/*
* Free up lconv struct
*/
if ( (ptloci->lconv_intl != __lconv_intl) &&
(ptloci->lconv_intl != NULL) &&
(*(ptloci->lconv_intl_refcount) == 0))
{
if ( (ptloci->lconv_mon_refcount != NULL) &&
(*(ptloci->lconv_mon_refcount) == 0) &&
(ptloci->lconv_mon_refcount != __lconv_mon_refcount) )
{
_free_crt(ptloci->lconv_mon_refcount);
__free_lconv_mon(ptloci->lconv_intl);
}
if ( (ptloci->lconv_num_refcount != NULL) &&
(*(ptloci->lconv_num_refcount) == 0) &&
(ptloci->lconv_num_refcount != __lconv_num_refcount) )
{
_free_crt(ptloci->lconv_num_refcount);
__free_lconv_num(ptloci->lconv_intl);
}
_free_crt(ptloci->lconv_intl_refcount);
_free_crt(ptloci->lconv_intl);
}
/*
* Free up ctype tables
*/
if ( (ptloci->ctype1_refcount != __ctype1_refcount) &&
(ptloci->ctype1_refcount != NULL) &&
(*(ptloci->ctype1_refcount) == 0) )
{
_free_crt(ptloci->ctype1_refcount);
_free_crt(ptloci->ctype1);
}
/*
* Free up the __lc_time_data struct
*/
if ( (ptloci->lc_time_intl != __lc_time_intl) &&
(ptloci->lc_time_intl != NULL) &&
((ptloci->lc_time_intl->refcount) == 0) )
{
__free_lc_time(ptloci->lc_time_intl);
_free_crt(ptloci->lc_time_intl);
}
/*
* Free up the threadlocinfo struct
*/
_free_crt(ptloci);
}
/***
*__updatetlocinfo() - refresh the thread's locale info
*
*Purpose:
* Update the current thread's reference to the locale information to
* match the current global locale info. Decrement the reference on the
* old locale information struct and if this count is now zero (so that no
* threads are using it), free it.
*
*Entry:
*
*Exit:
* _getptd()->ptlocinfo == __ptlocinfo
*
*Exceptions:
*
*******************************************************************************/
pthreadlocinfo __cdecl __updatetlocinfo(void)
{
pthreadlocinfo ptloci;
_mlock(_SETLOCALE_LOCK);
__try
{
ptloci = __updatetlocinfo_lk();
}
__finally
{
_munlock(_SETLOCALE_LOCK);
}
return ptloci;
}
static pthreadlocinfo __cdecl __updatetlocinfo_lk(void)
{
pthreadlocinfo ptloci;
_ptiddata ptd = _getptd();
if ( (ptloci = ptd->ptlocinfo) != __ptlocinfo )
{
/*
* Decrement the reference counts in the old locale info
* structure.
*/
if ( ptloci != NULL )
{
(ptloci->refcount)--;
if ( ptloci->lconv_intl_refcount != NULL )
(*(ptloci->lconv_intl_refcount))--;
if ( ptloci->lconv_mon_refcount != NULL )
(*(ptloci->lconv_mon_refcount))--;
if ( ptloci->lconv_num_refcount != NULL )
(*(ptloci->lconv_num_refcount))--;
if ( ptloci->ctype1_refcount != NULL )
(*(ptloci->ctype1_refcount))--;
(ptloci->lc_time_curr->refcount)--;
}
/*
* Update to the current locale info structure and increment the
* reference counts.
*/
ptd->ptlocinfo = __ptlocinfo;
(__ptlocinfo->refcount)++;
if ( __ptlocinfo->lconv_intl_refcount != NULL )
(*(__ptlocinfo->lconv_intl_refcount))++;
if ( __ptlocinfo->lconv_mon_refcount != NULL )
(*(__ptlocinfo->lconv_mon_refcount))++;
if ( __ptlocinfo->lconv_num_refcount != NULL )
(*(__ptlocinfo->lconv_num_refcount))++;
if ( __ptlocinfo->ctype1_refcount != NULL )
(*(__ptlocinfo->ctype1_refcount))++;
(__ptlocinfo->lc_time_curr->refcount)++;
/*
* Free the old locale info structure, if necessary. Must be done
* after incrementing reference counts in current locale in case
* any refcounts are shared with the old locale.
*/
if ( (ptloci != NULL) &&
(ptloci->refcount == 0) &&
(ptloci != &__initiallocinfo) )
__freetlocinfo(ptloci);
}
return ptd->ptlocinfo;
}
#endif
/***
*char * setlocale(int category, char *locale) - Set one or all locale categories
*
*Purpose:
* The setlocale() routine allows the user to set one or more of
* the locale categories to the specific locale selected by the
* user. [ANSI]
*
* NOTE: Under !_INTL, the C libraries only support the "C" locale.
* Attempts to change the locale will fail.
*
*Entry:
* int category = One of the locale categories defined in locale.h
* char *locale = String identifying a specific locale or NULL to
* query the current locale.
*
*Exit:
* If supplied locale pointer == NULL:
*
* Return pointer to current locale string and do NOT change
* the current locale.
*
* If supplied locale pointer != NULL:
*
* If locale string is '\0', set locale to default.
*
* If desired setting can be honored, return a pointer to the
* locale string for the appropriate category.
*
* If desired setting can NOT be honored, return NULL.
*
*Exceptions:
* Compound locale strings of the form "LC_COLLATE=xxx;LC_CTYPE=xxx;..."
* are allowed for the LC_ALL category. This is to support the ability
* to restore locales with the returned string, as specified by ANSI.
* Setting the locale with a compound locale string will succeed unless
* *all* categories failed. The returned string will reflect the current
* locale. For example, if LC_CTYPE fails in the above string, setlocale
* will return "LC_COLLATE=xxx;LC_CTYPE=yyy;..." where yyy is the
* previous locale (or the C locale if restoring the previous locale
* also failed). Unrecognized LC_* categories are ignored.
*
*******************************************************************************/
#if !defined(_WIN32) && !defined(_POSIX_) /* trivial ANSI support */
char * __cdecl setlocale (
int _category,
const char *_locale
)
{
if ( (_locale == NULL) ||
(_locale[0] == '\0') ||
( (_locale[0]=='C') && (_locale[1]=='\0')) )
return(_clocalestr);
else
return(NULL);
}
#else /* _WIN32/_POSIX_ */
char * __cdecl setlocale (
int _category,
const char *_locale
)
{
char * retval;
#ifdef _MT
pthreadlocinfo ptloci;
int i;
/* Validate category */
if ( (_category < LC_MIN) || (_category > LC_MAX) )
return NULL;
if ( _locale == NULL )
return _setlocale_lk(_category, NULL);
_mlock(_SETLOCALE_LOCK);
__try {
if ( (ptloci = _malloc_crt( sizeof(threadlocinfo) )) == NULL )
retval = NULL;
if ( (ptloci != NULL) && (retval = _setlocale_lk(_category, _locale)) )
{
ptloci->refcount = 0;
ptloci->lc_codepage = __lc_codepage;
ptloci->lc_collate_cp = __lc_collate_cp;
for ( i = 0 ; i <= LC_MAX - LC_MIN ; i++ )
ptloci->lc_handle[i] = __lc_handle[i];
ptloci->lc_clike = __lc_clike;
ptloci->mb_cur_max = __mb_cur_max;
ptloci->lconv_intl_refcount = __lconv_intl_refcount;
ptloci->lconv_num_refcount = __lconv_num_refcount;
ptloci->lconv_mon_refcount = __lconv_mon_refcount;
ptloci->lconv = __lconv;
ptloci->lconv_intl = __lconv_intl;
ptloci->ctype1_refcount = __ctype1_refcount;
ptloci->ctype1 = __ctype1;
ptloci->pctype = _pctype;
ptloci->lc_time_curr = __lc_time_curr;
ptloci->lc_time_intl = __lc_time_intl;
if ( (__ptlocinfo->refcount == 0) &&
(__ptlocinfo != &__initiallocinfo) )
__freetlocinfo(__ptlocinfo);
__ptlocinfo = ptloci;
(void)__updatetlocinfo_lk();
}
if ( (retval == NULL) && (ptloci != NULL) )
_free_crt(ptloci);
}
__finally {
_munlock(_SETLOCALE_LOCK);
}
return retval;
}
static char * __cdecl _setlocale_lk(
int _category,
const char *_locale
)
{
char * retval;
#else
/* Validate category */
if ((_category < LC_MIN) || (_category > LC_MAX))
return NULL;
#endif
/* Interpret locale */
if (_category != LC_ALL)
{
retval = (_locale) ? _setlocale_set_cat(_category,_locale) :
__lc_category[_category].locale;
} else { /* LC_ALL */
char lctemp[MAX_LC_LEN];
int i;
int same = 1;
int fLocaleSet = 0; /* flag to indicate if anything successfully set */
if (_locale != NULL)
{
if ( (_locale[0]=='L') && (_locale[1]=='C') && (_locale[2]=='_') )
{
/* parse compound locale string */
size_t len;
const char * p = _locale; /* start of string to parse */
const char * s;
do {
s = strpbrk(p,"=;");
if ((s==(char *)NULL) || (!(len=(size_t)(s-p))) || (*s==';'))
return NULL; /* syntax error */
/* match with known LC_ strings, if possible, else ignore */
for (i=LC_ALL+1; i<=LC_MAX; i++)
{
if ((!strncmp(__lc_category[i].catname,p,len))
&& (len==strlen(__lc_category[i].catname)))
{
break; /* matched i */
}
} /* no match if (i>LC_MAX) -- just ignore */
if ((!(len = strcspn(++s,";"))) && (*s!=';'))
return NULL; /* syntax error */
if (i<=LC_MAX)
{
strncpy(lctemp, s, len);
lctemp[len]='\0'; /* null terminate string */
/* don't fail unless all categories fail */
if (_setlocale_set_cat(i,lctemp))
fLocaleSet++; /* record a success */
}
if (*(p = s+len)!='\0')
p++; /* skip ';', if present */
} while (*p);
retval = (fLocaleSet) ? _setlocale_get_all() : NULL;
} else { /* simple LC_ALL locale string */
/* confirm locale is supported, get expanded locale */
if (retval = _expandlocale((char *)_locale, lctemp, NULL, NULL, _category))
{
for (i=LC_MIN; i<=LC_MAX; i++)
{
if (i!=LC_ALL)
{
if (strcmp(lctemp, __lc_category[i].locale))
{
if (_setlocale_set_cat(i, lctemp))
{
fLocaleSet++; /* record a success */
}
else
{
same = 0; /* record a failure */
}
}
else
fLocaleSet++; /* trivial succcess */
}
}
#ifdef _POSIX_
/* special case for POSIX - since LC_ALL expands,
one LC_ALL call may set many different categories,
must assume not same, get full string */
same = 0;
#endif
if (same) /* needn't call setlocale_get_all() if all the same */
{
retval = _setlocale_get_all();
/* retval set above */
_free_crt(__lc_category[LC_ALL].locale);
__lc_category[LC_ALL].locale = NULL;
}
else
retval = (fLocaleSet) ? _setlocale_get_all() : NULL;
}
}
} else { /* LC_ALL & NULL */
retval = _setlocale_get_all ();
}
}
/* common exit point */
return retval;
} /* setlocale */
static char * __cdecl _setlocale_set_cat (
int category,
const char * locale
)
{
char * oldlocale;
LCID oldhandle;
UINT oldcodepage;
LC_ID oldid;
LC_ID idtemp;
UINT cptemp;
char lctemp[MAX_LC_LEN];
char * pch;
static struct _is_ctype_compatible _Lcid_c[_LOC_CCACHE] = {{0,1}};
struct _is_ctype_compatible buf1, buf2;
int i;
short out[sizeof(_first_127char)];
if (!_expandlocale((char *)locale, lctemp, &idtemp, &cptemp, category))
{
return NULL; /* unrecognized locale */
}
if (!strcmp(lctemp, __lc_category[category].locale))
{
return __lc_category[category].locale;
}
if (!(pch = (char *)_malloc_crt(strlen(lctemp)+1)))
{
return NULL; /* error if malloc fails */
}
oldlocale = __lc_category[category].locale; /* save for possible restore*/
oldhandle = __lc_handle[category];
memcpy((void *)&oldid, (void *)&__lc_id[category], sizeof(oldid));
oldcodepage = __lc_codepage;
/* update locale string */
__lc_category[category].locale = strcpy(pch,lctemp);
__lc_handle[category] = MAKELCID(idtemp.wLanguage, SORT_DEFAULT);
memcpy((void *)&__lc_id[category], (void *)&idtemp, sizeof(idtemp));
/* To speedup locale based comparisions, we identify if the current
* local has first 127 character set same as CLOCALE. If yes then
* __lc_clike = TRUE. Also we keep this info. in a cache of cache
* size = _LOC_CCACHE, so that every time the locale is switched, we
* don't have to call time consuming GetStringTypeA.
*/
if (category==LC_CTYPE)
{
__lc_codepage = cptemp;
buf1 = _Lcid_c[_LOC_CCACHE -1];
/* brings the recently used codepage to the top. or else shifts
* every thing down by one so that new _Lcid_c can be placed at
* the top.
*/
for ( i = 0; i < _LOC_CCACHE; i++)
{
if (__lc_codepage == _Lcid_c[i].id)
{
_Lcid_c[0] = _Lcid_c[i];
_Lcid_c[i] = buf1;
break;
}
else
{
buf2 = _Lcid_c[i];
_Lcid_c[i] = buf1;
buf1 = buf2;
}
}
if ( i == _LOC_CCACHE)
{
if ( __crtGetStringTypeA(CT_CTYPE1,
_first_127char,
sizeof(_first_127char),
out,
__lc_codepage,
__lc_handle[LC_CTYPE],
TRUE ))
{
if ( !memcmp(out, _ctype_loc_style, sizeof(_ctype_loc_style)))
_Lcid_c[0].is_clike = TRUE;
else
_Lcid_c[0].is_clike = FALSE;
}
else
_Lcid_c[0].is_clike = FALSE;
_Lcid_c[0].id = __lc_codepage;
}
__lc_clike = _Lcid_c[0].is_clike;
}
if ( category == LC_COLLATE )
__lc_collate_cp = cptemp;
if (__lc_category[category].init())
{
/* restore previous state! */
__lc_category[category].locale = oldlocale;
_free_crt(pch);
__lc_handle[category] = oldhandle;
__lc_codepage = oldcodepage;
return NULL; /* error if non-zero return */
}
/* locale set up successfully */
/* Cleanup */
if ((oldlocale != _clocalestr)
#ifdef _POSIX_
&& (oldlocale!=_posixlocalestr)
#endif
)
_free_crt(oldlocale);
return __lc_category[category].locale;
} /* _setlocale_set_cat */
static char * __cdecl _setlocale_get_all (
void
)
{
int i;
int same = 1;
/* allocate memory if necessary */
if ( (__lc_category[LC_ALL].locale == NULL) &&
((__lc_category[LC_ALL].locale =
_malloc_crt((MAX_LC_LEN+1) * (LC_MAX-LC_MIN+1) + CATNAMES_LEN))
== NULL) )
return NULL;
__lc_category[LC_ALL].locale[0] = '\0';
for (i=LC_MIN+1; ; i++)
{
_strcats(__lc_category[LC_ALL].locale, 3, __lc_category[i].catname,"=",__lc_category[i].locale);
if (i<LC_MAX)
{
strcat(__lc_category[LC_ALL].locale,";");
if (strcmp(__lc_category[i].locale, __lc_category[i+1].locale))
same=0;
}
else
{
if (!same)
return __lc_category[LC_ALL].locale;
else
{
_free_crt(__lc_category[LC_ALL].locale);
__lc_category[LC_ALL].locale = (char *)NULL;
return __lc_category[LC_CTYPE].locale;
}
}
}
} /* _setlocale_get_all */
char * _expandlocale (
char *expr,
char * output,
LC_ID * id,
UINT * cp,
int category
)
{
static LC_ID cacheid = {0, 0, 0};
static UINT cachecp = 0;
static char cachein[MAX_LC_LEN] = "C";
static char cacheout[MAX_LC_LEN] = "C";
if (!expr)
return NULL; /* error if no input */
#ifdef _POSIX_
if (!*expr)
{
/* POSIX: when locale=="", look first at the environment variables:
1) use LC_ALL EV if defined and not null (LC_ALL expands to LC_*)
2) use EV that matches category and is not null
3) use LANG EV if defined and not null
otherwise, we fall through to get system default */
char *envar;
if (category == LC_ALL && (envar = getenv("LC_ALL")))
{
if (!*envar)
{
/* LC_ALL expands to LC_*, set output to "", each category will be
expanded individually */
*output = '\0';
return output;
}
else {
expr = envar;
}
}
else {
if ((envar = getenv(__lc_category[category].catname)) && *envar ||
(envar = getenv("LANG")) && *envar)
{
expr = envar;
}
}
}
#endif /* _POSIX_ */
if (((*expr=='C') && (!expr[1]))
#ifdef _POSIX_
|| (!strcmp(expr, _posixlocalestr))
#endif
) /* for "C" locale, just return */
{
#ifdef _POSIX_
strcpy(output, _posixlocalestr);
#else
*output = 'C';
output[1] = '\0';
#endif
if (id)
{
id->wLanguage = 0;
id->wCountry = 0;
id->wCodePage = 0;
}
if (cp)
{
*cp = CP_ACP; /* return to ANSI code page */
}
return output; /* "C" */
}
/* first, make sure we didn't just do this one */
if (strcmp(cacheout,expr) && strcmp(cachein,expr))
{
/* do some real work */
LC_STRINGS names;
if (__lc_strtolc((LC_STRINGS *)&names, (const char *)expr))
return NULL; /* syntax error */
if (!__get_qualified_locale((LPLC_STRINGS)&names,
(LPLC_ID)&cacheid, (LPLC_STRINGS)&names))
return NULL; /* locale not recognized/supported */
/* begin: cache atomic section */
cachecp = cacheid.wCodePage;
__lc_lctostr((char *)cacheout, &names);
/* Don't cache "" empty string */
if (*expr)
strcpy(cachein, expr);
else
strcpy(cachein, cacheout);
/* end: cache atomic section */
}
if (id)
memcpy((void *)id, (void *)&cacheid, sizeof(cacheid)); /* possibly return LC_ID */
if (cp)
memcpy((void *)cp, (void *)&cachecp, sizeof(cachecp)); /* possibly return cp */
strcpy(output,cacheout);
return cacheout; /* return fully expanded locale string */
}
/* helpers */
int __cdecl __init_dummy(void) /* default routine for locale initializer */
{
return 0;
}
void _strcats
(
char *outstr,
int n,
...
)
{
int i;
va_list substr;
va_start (substr, n);
for (i =0; i<n; i++)
{
strcat(outstr, va_arg(substr, char *));
}
va_end(substr);
}
int __lc_strtolc
(
LC_STRINGS *names,
const char *locale
)
{
int i;
size_t len;
char ch;
memset((void *)names, '\0', sizeof(LC_STRINGS)); /* clear out result */
if (*locale=='\0')
return 0; /* trivial case */
/* only code page is given */
if (locale[0] == '.' && locale[1] != '\0')
{
strcpy((char *)names->szCodePage, &locale[1]);
return 0;
}
for (i=0; ; i++)
{
if (!(len=strcspn(locale,"_.,")))
return -1; /* syntax error */
ch = locale[len];
if ((i==0) && (len<MAX_LANG_LEN) && (ch!='.'))
strncpy((char *)names->szLanguage, locale, len);
else if ((i==1) && (len<MAX_CTRY_LEN) && (ch!='_'))
strncpy((char *)names->szCountry, locale, len);
else if ((i==2) && (len<MAX_CP_LEN) && (ch=='\0' || ch==','))
strncpy((char *)names->szCodePage, locale, len);
else
return -1; /* error parsing locale string */
if (ch==',')
{
/* modifier not used in current implementation, but it
must be parsed to for POSIX/XOpen conformance */
/* strncpy(names->szModifier, locale, MAX_MODIFIER_LEN-1); */
break;
}
if (!ch)
break;
locale+=(len+1);
}
return 0;
}
void __lc_lctostr
(
char *locale,
const LC_STRINGS *names
)
{
strcpy(locale, (char *)names->szLanguage);
if (*(names->szCountry))
_strcats(locale, 2, "_", names->szCountry);
if (*(names->szCodePage))
_strcats(locale, 2, ".", names->szCodePage);
/* if (names->szModifier)
_strcats(locale, 2, ",", names->szModifier); */
}
#endif /* _WIN32/_POSIX_ */
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