1 /*- 2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 3 * at Electronni Visti IA, Kiev, Ukraine. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <rune.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <errno.h> 35 #include <unistd.h> 36 #include <sysexits.h> 37 #include "collate.h" 38 #include "setlocale.h" 39 40 int __collate_load_error = 1; 41 int __collate_substitute_nontrivial; 42 char __collate_version[STR_LEN]; 43 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 44 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 45 struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE]; 46 47 #define FREAD(a, b, c, d) \ 48 do { \ 49 if(fread(a, b, c, d) != c) { \ 50 fclose(d); \ 51 return -1; \ 52 } \ 53 } while(0) 54 55 void __collate_err(int ex, const char *f) __dead2; 56 57 int 58 __collate_load_tables(encoding) 59 char *encoding; 60 { 61 char buf[PATH_MAX]; 62 FILE *fp; 63 int i, save_load_error; 64 65 save_load_error = __collate_load_error; 66 __collate_load_error = 1; 67 if (!encoding) { 68 __collate_load_error = save_load_error; 69 return -1; 70 } 71 if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) 72 return 0; 73 if (!_PathLocale) { 74 __collate_load_error = save_load_error; 75 return -1; 76 } 77 /* Range checking not needed, encoding has fixed size */ 78 (void) strcpy(buf, _PathLocale); 79 (void) strcat(buf, "/"); 80 (void) strcat(buf, encoding); 81 (void) strcat(buf, "/LC_COLLATE"); 82 if ((fp = fopen(buf, "r")) == NULL) { 83 __collate_load_error = save_load_error; 84 return -1; 85 } 86 FREAD(__collate_version, sizeof(__collate_version), 1, fp); 87 if (strcmp(__collate_version, COLLATE_VERSION) != 0) { 88 fclose(fp); 89 return -1; 90 } 91 FREAD(__collate_substitute_table, sizeof(__collate_substitute_table), 92 1, fp); 93 FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1, 94 fp); 95 FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1, 96 fp); 97 fclose(fp); 98 __collate_load_error = 0; 99 100 __collate_substitute_nontrivial = 0; 101 for (i = 0; i < UCHAR_MAX + 1; i++) { 102 if (__collate_substitute_table[i][0] != i || 103 __collate_substitute_table[i][1] != 0) { 104 __collate_substitute_nontrivial = 1; 105 break; 106 } 107 } 108 109 return 0; 110 } 111 112 u_char * 113 __collate_substitute(s) 114 const u_char *s; 115 { 116 int dest_len, len, nlen; 117 int delta = strlen(s); 118 u_char *dest_str = NULL; 119 120 if(s == NULL || *s == '\0') 121 return __collate_strdup(""); 122 delta += delta / 8; 123 dest_str = malloc(dest_len = delta); 124 if(dest_str == NULL) 125 __collate_err(EX_OSERR, __FUNCTION__); 126 len = 0; 127 while(*s) { 128 nlen = len + strlen(__collate_substitute_table[*s]); 129 if (dest_len <= nlen) { 130 dest_str = reallocf(dest_str, dest_len = nlen + delta); 131 if(dest_str == NULL) 132 __collate_err(EX_OSERR, __FUNCTION__); 133 } 134 strcpy(dest_str + len, __collate_substitute_table[*s++]); 135 len = nlen; 136 } 137 return dest_str; 138 } 139 140 void 141 __collate_lookup(t, len, prim, sec) 142 const u_char *t; 143 int *len, *prim, *sec; 144 { 145 struct __collate_st_chain_pri *p2; 146 147 *len = 1; 148 *prim = *sec = 0; 149 for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) { 150 if(strncmp(t, p2->str, strlen(p2->str)) == 0) { 151 *len = strlen(p2->str); 152 *prim = p2->prim; 153 *sec = p2->sec; 154 return; 155 } 156 } 157 *prim = __collate_char_pri_table[*t].prim; 158 *sec = __collate_char_pri_table[*t].sec; 159 } 160 161 u_char * 162 __collate_strdup(s) 163 u_char *s; 164 { 165 u_char *t = strdup(s); 166 167 if (t == NULL) 168 __collate_err(EX_OSERR, __FUNCTION__); 169 return t; 170 } 171 172 void 173 __collate_err(int ex, const char *f) 174 { 175 extern char *__progname; /* Program name, from crt0. */ 176 const char *s; 177 int serrno = errno; 178 179 s = __progname; 180 _write(STDERR_FILENO, s, strlen(s)); 181 _write(STDERR_FILENO, ": ", 2); 182 s = f; 183 _write(STDERR_FILENO, s, strlen(s)); 184 _write(STDERR_FILENO, ": ", 2); 185 s = strerror(serrno); 186 _write(STDERR_FILENO, s, strlen(s)); 187 _write(STDERR_FILENO, "\n", 1); 188 exit(ex); 189 } 190 191 #ifdef COLLATE_DEBUG 192 void 193 __collate_print_tables() 194 { 195 int i; 196 struct __collate_st_chain_pri *p2; 197 198 printf("Substitute table:\n"); 199 for (i = 0; i < UCHAR_MAX + 1; i++) 200 if (i != *__collate_substitute_table[i]) 201 printf("\t'%c' --> \"%s\"\n", i, 202 __collate_substitute_table[i]); 203 printf("Chain priority table:\n"); 204 for (p2 = __collate_chain_pri_table; p2->str[0]; p2++) 205 printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec); 206 printf("Char priority table:\n"); 207 for (i = 0; i < UCHAR_MAX + 1; i++) 208 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 209 __collate_char_pri_table[i].sec); 210 } 211 #endif 212