1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Paul Borman at Krystal Technologies. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <rune.h> 38 #include <errno.h> 39 #include <limits.h> 40 #include <string.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include "setlocale.h" 44 45 extern int _none_init __P((_RuneLocale *)); 46 #ifdef XPG4 47 extern int _UTF2_init __P((_RuneLocale *)); 48 extern int _EUC_init __P((_RuneLocale *)); 49 extern int _xpg4_setrunelocale __P((char *)); 50 #endif 51 extern _RuneLocale *_Read_RuneMagi __P((FILE *)); 52 53 #ifdef XPG4 54 int 55 setrunelocale(encoding) 56 char *encoding; 57 { 58 return _xpg4_setrunelocale(encoding); 59 } 60 #endif 61 62 int 63 #ifndef XPG4 64 setrunelocale(encoding) 65 #else 66 _xpg4_setrunelocale(encoding) 67 #endif 68 char *encoding; 69 { 70 FILE *fp; 71 char name[PATH_MAX]; 72 _RuneLocale *rl; 73 74 if (!encoding || strlen(encoding) > ENCODING_LEN) 75 return(EFAULT); 76 77 /* 78 * The "C" and "POSIX" locale are always here. 79 */ 80 if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) { 81 _CurrentRuneLocale = &_DefaultRuneLocale; 82 return(0); 83 } 84 85 if (!_PathLocale) 86 _PathLocale = _PATH_LOCALE; 87 /* Range checking not needed, encoding length already checked above */ 88 (void) strcpy(name, _PathLocale); 89 (void) strcat(name, "/"); 90 (void) strcat(name, encoding); 91 (void) strcat(name, "/LC_CTYPE"); 92 93 if ((fp = fopen(name, "r")) == NULL) 94 return(ENOENT); 95 96 if ((rl = _Read_RuneMagi(fp)) == 0) { 97 fclose(fp); 98 return(EFTYPE); 99 } 100 fclose(fp); 101 102 #ifdef XPG4 103 if (!rl->encoding[0] || !strcmp(rl->encoding, "UTF2")) { 104 return(_UTF2_init(rl)); 105 #else 106 if (!rl->encoding[0]) { 107 return(EINVAL); 108 #endif 109 } else if (!strcmp(rl->encoding, "NONE")) { 110 return(_none_init(rl)); 111 #ifdef XPG4 112 } else if (!strcmp(rl->encoding, "EUC")) { 113 return(_EUC_init(rl)); 114 #endif 115 } else 116 return(EINVAL); 117 } 118 119