138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Paul Borman at Krystal Technologies.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <rune.h>
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#include <errno.h>
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#include <limits.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "setlocale.h"
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extern int _none_init __P((_RuneLocale *));
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#ifdef XPG4
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extern int _UTF2_init __P((_RuneLocale *));
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extern int _EUC_init __P((_RuneLocale *));
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extern int _MSKanji_init __P((_RuneLocale *));
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extern int _xpg4_setrunelocale __P((char *));
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#endif
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extern _RuneLocale *_Read_RuneMagi __P((FILE *));
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#ifdef XPG4
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int
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setrunelocale(encoding)
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char *encoding;
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{
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return _xpg4_setrunelocale(encoding);
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}
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#endif
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int
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#ifndef XPG4
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setrunelocale(encoding)
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#else
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_xpg4_setrunelocale(encoding)
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#endif
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char *encoding;
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{
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FILE *fp;
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char name[PATH_MAX];
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_RuneLocale *rl;
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if (!encoding || strlen(encoding) > ENCODING_LEN)
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return(EFAULT);
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/*
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* The "C" and "POSIX" locale are always here.
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*/
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if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) {
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_CurrentRuneLocale = &_DefaultRuneLocale;
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return(0);
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}
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if (_PathLocale == NULL) {
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char *p = getenv("PATH_LOCALE");
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if (p != NULL
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#ifndef __NETBSD_SYSCALLS
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&& !issetugid()
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#endif
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) {
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if (strlen(p) + 1/*"/"*/ + ENCODING_LEN +
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1/*"/"*/ + CATEGORY_LEN >= PATH_MAX)
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return(EFAULT);
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_PathLocale = strdup(p);
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if (_PathLocale == NULL)
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return (errno);
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} else
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_PathLocale = _PATH_LOCALE;
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}
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/* Range checking not needed, encoding length already checked above */
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(void) strcpy(name, _PathLocale);
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(void) strcat(name, "/");
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(void) strcat(name, encoding);
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(void) strcat(name, "/LC_CTYPE");
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if ((fp = fopen(name, "r")) == NULL)
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return(ENOENT);
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if ((rl = _Read_RuneMagi(fp)) == 0) {
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fclose(fp);
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return(EFTYPE);
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}
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fclose(fp);
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#ifdef XPG4
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if (!rl->encoding[0] || !strcmp(rl->encoding, "UTF2"))
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return(_UTF2_init(rl));
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#else
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if (!rl->encoding[0])
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return(EINVAL);
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#endif
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else if (!strcmp(rl->encoding, "NONE"))
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return(_none_init(rl));
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#ifdef XPG4
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else if (!strcmp(rl->encoding, "EUC"))
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return(_EUC_init(rl));
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else if (!strcmp(rl->encoding, "MSKanji"))
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return(_MSKanji_init(rl));
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#endif
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else
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return(EINVAL);
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}
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