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620 lines
17 KiB
620 lines
17 KiB
/***
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*setlocal.c - Contains the setlocale function
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*
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* Copyright (c) 1988-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Contains the setlocale() function.
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*
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*Revision History:
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* 03-21-89 JCR Module created.
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* 09-25-89 GJF Fixed copyright. Checked for compatibility with Win 3.0
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* 09-25-90 KRS Major rewrite--support more than "C" locale if _INTL.
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* 11-05-91 ETC Get 09-25-90 working for C and "" locales; separate
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* setlocal.h; add Init functions.
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* 12-05-91 ETC Separate nlsdata.c; add mt support; remove calls to
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* itself.
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* 12-20-91 ETC Added _getlocaleinfo api interface function.
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* 09-25-92 KRS Fix for latest NLSAPI changes, etc.
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* 01-25-93 KRS Fix for latest changes, clean up code, etc.
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* 02-02-93 CFW Many modifications and bug fixes (all under _INTL).
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* 02-08-93 CFW Bug fixes and casts to avoid warnings (all under _INTL).
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* 02-17-93 CFW Removed re-call of init() functions in case of failure.
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* 03-01-93 CFW Check GetQualifiedLocale return value.
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* 03-02-93 CFW Added POSIX conformance, check environment variables.
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* 03-09-93 CFW Set CP to CP_ACP when changing to C locale.
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* 03-17-93 CFW Change expand to expandlocale, prepend _ to internal functions,
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* lots of POSIX fixup.
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* 03-23-93 CFW Add _ to GetQualifiedLocale call.
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* 03-24-93 CFW Change to _get_qualified_locale, support ".codepage".
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* 05-10-93 CFW Disallow setlocale(LC_*, ".").
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <locale.h>
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#ifdef _INTL
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#include <os2dll.h>
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#include <malloc.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h> /* for strtol */
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#include <setlocal.h>
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#ifdef MTHREAD
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/*
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* Check order of locale category multithread locks.
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* (needed by _setlocale_set_cat)
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*/
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#if _LC_COLLATE_LOCK != _SETLOCALE_LOCK + LC_COLLATE || \
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_LC_CTYPE_LOCK != _SETLOCALE_LOCK + LC_CTYPE || \
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_LC_MONETARY_LOCK != _SETLOCALE_LOCK + LC_MONETARY || \
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_LC_NUMERIC_LOCK != _SETLOCALE_LOCK + LC_NUMERIC || \
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_LC_TIME_LOCK != _SETLOCALE_LOCK + LC_TIME
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#error Locale category multithread locks are disordered
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#endif
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#endif /* MTHREAD */
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#endif /* _INTL */
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/* C locale */
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static char _clocalestr[] = "C";
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#ifdef _POSIX_
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static char _posixlocalestr[] = "POSIX";
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#endif
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#ifdef _INTL
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/* CONSIDER: for granularity, reference from approp component (lconv.c, etc.) */
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int _CRTAPI3 _init_collate(void);
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int _CRTAPI3 _init_ctype(void);
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int _CRTAPI3 _init_monetary(void);
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int _CRTAPI3 _init_numeric(void);
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int _CRTAPI3 _init_time(void);
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int _CRTAPI3 _init_dummy(void);
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static struct {
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const char * catname;
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char * locale;
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int (* init)(void);
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} _lc_category[LC_MAX-LC_MIN+1] = {
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/* code assumes locale initialization is "_clocalestr" */
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{ "LC_ALL", NULL, _init_dummy /* never called */ },
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{ "LC_COLLATE", _clocalestr, _init_collate },
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{ "LC_CTYPE", _clocalestr, _init_ctype },
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{ "LC_MONETARY", _clocalestr, _init_monetary },
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{ "LC_NUMERIC", _clocalestr, _init_numeric },
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{ "LC_TIME", _clocalestr, _init_time }
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};
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/* CONSIDER: _init_* functions should map to _init_dummy when not linked in */
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/* helper function prototypes */
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char * _expandlocale(char *, char *, LC_ID *, UINT *, int);
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void _strcats(char *, int, ...);
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void _lc_lctostr(char *, const LC_STRINGS *);
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int _lc_strtolc(LC_STRINGS *, const char *);
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static char * _CRTAPI3 _setlocale_set_cat(int, const char *);
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static char * _CRTAPI3 _setlocale_get_all(void);
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#endif /* _INTL */
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/***
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*char * setlocale(int category, char *locale) - Set one or all locale categories
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*
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*Purpose:
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* The setlocale() routine allows the user to set one or more of
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* the locale categories to the specific locale selected by the
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* user. [ANSI]
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*
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* NOTE: Under !_INTL, the C libraries only support the "C" locale.
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* Attempts to change the locale will fail.
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*
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*Entry:
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* int category = One of the locale categories defined in locale.h
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* char *locale = String identifying a specific locale or NULL to
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* query the current locale.
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*
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*Exit:
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* If supplied locale pointer == NULL:
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*
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* Return pointer to current locale string and do NOT change
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* the current locale.
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*
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* If supplied locale pointer != NULL:
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*
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* If locale string is '\0', set locale to default.
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*
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* If desired setting can be honored, return a pointer to the
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* locale string for the appropriate category.
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*
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* If desired setting can NOT be honored, return NULL.
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*
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*Exceptions:
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* Compound locale strings of the form "LC_COLLATE=xxx;LC_CTYPE=xxx;..."
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* are allowed for the LC_ALL category. This is to support the ability
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* to restore locales with the returned string, as specified by ANSI.
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* Setting the locale with a compound locale string will succeed unless
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* *all* categories failed. The returned string will reflect the current
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* locale. For example, if LC_CTYPE fails in the above string, setlocale
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* will return "LC_COLLATE=xxx;LC_CTYPE=yyy;..." where yyy is the
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* previous locale (or the C locale if restoring the previous locale
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* also failed). Unrecognized LC_* categories are ignored.
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*
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*******************************************************************************/
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char * _CRTAPI1 setlocale (
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int _category,
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const char *_locale
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)
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{
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#ifdef _INTL
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char * retval;
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#endif
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/* Validate category */
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if ((_category < LC_MIN) || (_category > LC_MAX))
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return NULL;
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/* Interpret locale */
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#ifndef _INTL /* trivial ANSI support */
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if ( (_locale == NULL) ||
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(_locale[0] == '\0') ||
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( (_locale[0]=='C') && (_locale[1]=='\0'))
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#ifdef _POSIX_
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|| (!strcmp(_locale,"POSIX"))
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#endif
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)
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#ifdef _POSIX_
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return _posixlocalestr;
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#else
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return _clocalestr;
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#endif
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else
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return NULL;
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#else /* _INTL */
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_mlock (_SETLOCALE_LOCK);
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if (_category != LC_ALL)
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{
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retval = (_locale) ? _setlocale_set_cat(_category,_locale) :
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_lc_category[_category].locale;
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} else { /* LC_ALL */
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char lctemp[MAX_LC_LEN];
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int i;
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int same = 1;
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int fLocaleSet = 0; /* flag to indicate if anything successfully set */
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if (_locale != NULL)
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{
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if ( (_locale[0]=='L') && (_locale[1]=='C') && (_locale[2]=='_') )
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{
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/* parse compound locale string */
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size_t len;
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const char * p = _locale; /* start of string to parse */
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const char * s;
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do {
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s = strpbrk(p,"=;");
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if ((s==(char *)NULL) || (!(len=s-p)) || (*s==';'))
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{
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_munlock (_SETLOCALE_LOCK);
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return NULL; /* syntax error */
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}
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/* match with known LC_ strings, if possible, else ignore */
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for (i=LC_ALL+1; i<=LC_MAX; i++)
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{
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if ((!strncmp(_lc_category[i].catname,p,len))
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&& (len==strlen(_lc_category[i].catname)))
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{
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break; /* matched i */
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}
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} /* no match if (i>LC_MAX) -- just ignore */
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if ((!(len = strcspn(++s,";"))) && (*s!=';'))
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{
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_munlock (_SETLOCALE_LOCK);
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return NULL; /* syntax error */
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}
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if (i<=LC_MAX)
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{
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/* CONSIDER: check for repeated categories? */
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strncpy(lctemp, s, len);
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lctemp[len]='\0'; /* null terminate string */
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/* don't fail unless all categories fail */
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if (_setlocale_set_cat(i,lctemp))
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fLocaleSet++; /* record a success */
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}
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if (*(p = s+len)!='\0')
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p++; /* skip ';', if present */
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} while (*p);
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retval = (fLocaleSet) ? _setlocale_get_all() : NULL;
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/* CONSIDER: LC_CTYPE should be done first. _init_monetary for example
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will convert wide strings to multibyte (dependent on ctype).
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This is currently not a problem; ctype is done second; collate is done
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first, but it does not require ctype. */
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/* Not necessarily true when a compound locale string is used, but WE always
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put it in the right order. */
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} else { /* simple LC_ALL locale string */
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/* confirm locale is supported, get expanded locale */
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if (retval = _expandlocale((char *)_locale, lctemp, NULL, NULL, _category))
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{
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for (i=LC_MIN; i<=LC_MAX; i++)
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{
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if (i!=LC_ALL)
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{
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if (strcmp(lctemp, _lc_category[i].locale))
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{
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if (_setlocale_set_cat(i, lctemp))
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{
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fLocaleSet++; /* record a success */
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}
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else
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{
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same = 0; /* record a failure */
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}
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}
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else
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fLocaleSet++; /* trivial succcess */
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}
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}
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#ifdef _POSIX_
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/* special case for POSIX - since LC_ALL expands,
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one LC_ALL call may set many different categories,
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must assume not same, get full string */
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same = 0;
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#endif
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if (same) /* needn't call setlocale_get_all() if all the same */
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{
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retval = _setlocale_get_all();
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/* retval set above */
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free(_lc_category[LC_ALL].locale);
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_lc_category[LC_ALL].locale = NULL;
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}
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else
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retval = (fLocaleSet) ? _setlocale_get_all() : NULL;
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}
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}
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} else { /* LC_ALL & NULL */
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retval = _setlocale_get_all ();
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}
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}
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/* common exit point */
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_munlock (_SETLOCALE_LOCK);
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return retval;
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#endif /* _INTL */
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} /* setlocale */
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#ifdef _INTL /* rest are international helpers */
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static char * _CRTAPI3 _setlocale_set_cat (
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int category,
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const char * locale
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)
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{
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char * oldlocale;
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LCID oldhandle;
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UINT oldcodepage;
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LC_ID oldid;
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LC_ID idtemp;
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UINT cptemp;
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char lctemp[MAX_LC_LEN];
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char * pch;
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/* lock this category to keep other library functions */
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/* from using locale handles, information, etc. */
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_mlock (_SETLOCALE_LOCK + category);
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if (!_expandlocale((char *)locale, lctemp, &idtemp, &cptemp, category))
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{
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_munlock (_SETLOCALE_LOCK + category);
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return NULL; /* unrecognized locale */
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}
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if (!(pch = (char *)malloc(strlen(lctemp)+1)))
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{
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_munlock (_SETLOCALE_LOCK + category);
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return NULL; /* error if malloc fails */
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}
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oldlocale = _lc_category[category].locale; /* save for possible restore*/
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oldhandle = _lc_handle[category];
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memcpy((void *)&oldid, (void *)&_lc_id[category], sizeof(oldid));
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oldcodepage = _lc_codepage;
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/* update locale string */
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_lc_category[category].locale = strcpy(pch,lctemp);
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_lc_handle[category] = MAKELCID(idtemp.wLanguage, SORT_DEFAULT);
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memcpy((void *)&_lc_id[category], (void *)&idtemp, sizeof(idtemp));
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if (category==LC_CTYPE)
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_lc_codepage = cptemp;
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if (_lc_category[category].init())
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{
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/* restore previous state! */
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_lc_category[category].locale = oldlocale;
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free(pch);
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_lc_handle[category] = oldhandle;
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_lc_codepage = oldcodepage;
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_munlock (_SETLOCALE_LOCK + category);
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return NULL; /* error if non-zero return */
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}
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/* locale set up successfully */
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/* Cleanup */
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if ((oldlocale != _clocalestr)
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#ifdef _POSIX_
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&& (oldlocale!=_posixlocalestr)
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#endif
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)
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free(oldlocale);
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_munlock (_SETLOCALE_LOCK + category);
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return _lc_category[category].locale;
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} /* _setlocale_set_cat */
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static char * _CRTAPI3 _setlocale_get_all (
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void
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)
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{
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int i;
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int same = 1;
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/* allocate memory if necessary */
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if (!_lc_category[LC_ALL].locale)
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_lc_category[LC_ALL].locale = malloc((MAX_LC_LEN+1) * (LC_MAX-LC_MIN+1) + CATNAMES_LEN);
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_lc_category[LC_ALL].locale[0] = '\0';
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for (i=LC_MIN+1; ; i++)
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{
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_strcats(_lc_category[LC_ALL].locale, 3, _lc_category[i].catname,"=",_lc_category[i].locale);
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if (i<LC_MAX)
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{
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strcat(_lc_category[LC_ALL].locale,";");
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if (strcmp(_lc_category[i].locale, _lc_category[i+1].locale))
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same=0;
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}
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else
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{
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if (!same)
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return _lc_category[LC_ALL].locale;
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else
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{
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free(_lc_category[LC_ALL].locale); /* free */
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_lc_category[LC_ALL].locale = (char *)NULL;
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return _lc_category[LC_CTYPE].locale;
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}
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}
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}
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} /* _setlocale_get_all */
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char * _expandlocale (
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char *expr,
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char * output,
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LC_ID * id,
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UINT * cp,
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int category
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)
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{
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static LC_ID cacheid = {0, 0, 0};
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static UINT cachecp = 0;
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static char cachein[MAX_LC_LEN] = "C";
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static char cacheout[MAX_LC_LEN] = "C";
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if (!expr)
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return NULL; /* error if no input */
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#ifdef _POSIX_
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if (!*expr)
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{
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/* POSIX: when locale=="", look first at the environment variables:
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1) use LC_ALL EV if defined and not null (LC_ALL expands to LC_*)
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2) use EV that matches category and is not null
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3) use LANG EV if defined and not null
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otherwise, we fall through to get system default */
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char *envar;
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if (category == LC_ALL && (envar = getenv("LC_ALL")))
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{
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if (!*envar)
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{
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/* LC_ALL expands to LC_*, set output to "", each category will be
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expanded individually */
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*output = '\0';
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return output;
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}
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else {
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expr = envar;
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}
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}
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else {
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if ((envar = getenv(_lc_category[category].catname)) && *envar ||
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(envar = getenv("LANG")) && *envar)
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{
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expr = envar;
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}
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}
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}
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#endif /* _POSIX_ */
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if (((*expr=='C') && (!expr[1]))
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#ifdef _POSIX_
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|| (!strcmp(expr, _posixlocalestr))
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#endif
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) /* for "C" locale, just return */
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{
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#ifdef _POSIX_
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strcpy(output, _posixlocalestr);
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#else
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*output = 'C';
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output[1] = '\0';
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#endif
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if (id)
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{
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id->wLanguage = 0;
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id->wCountry = 0;
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id->wCodePage = 0;
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}
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if (cp)
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{
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*cp = CP_ACP; /* return to ANSI code page */
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}
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return output; /* "C" */
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}
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/* first, make sure we didn't just do this one */
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if (strcmp(cacheout,expr) && strcmp(cachein,expr))
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{
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/* do some real work */
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const LC_STRINGS names;
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if (_lc_strtolc((LC_STRINGS *)&names, (const char *)expr))
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return NULL; /* syntax error */
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if (!_get_qualified_locale((const DWORD)QF_STRINGS, (const LPVOID)&names,
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(LPLC_ID)&cacheid, (LPLC_STRINGS)&names))
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return NULL; /* locale not recognized/supported */
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/* begin: cache atomic section */
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cachecp = cacheid.wCodePage;
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_lc_lctostr((char *)cacheout, &names);
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/* Don't cache "" empty string */
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if (*expr)
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strcpy(cachein, expr);
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else
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strcpy(cachein, cacheout);
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/* end: cache atomic section */
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}
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if (id)
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memcpy((void *)id, (void *)&cacheid, sizeof(cacheid)); /* possibly return LC_ID */
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if (cp)
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memcpy((void *)cp, (void *)&cachecp, sizeof(cachecp)); /* possibly return cp */
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strcpy(output,cacheout);
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return cacheout; /* return fully expanded locale string */
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}
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/* helpers */
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int _CRTAPI3 _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, 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) && (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 /* _INTL */
|