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 "namespace.h" 31 #include <rune.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <errno.h> 36 #include <unistd.h> 37 #include <sysexits.h> 38 #include "un-namespace.h" 39 40 #include "collate.h" 41 #include "setlocale.h" 42 43 int __collate_load_error = 1; 44 int __collate_substitute_nontrivial; 45 char __collate_version[STR_LEN]; 46 u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; 47 struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; 48 struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE]; 49 50 #define FREAD(a, b, c, d) \ 51 do { \ 52 if (fread(a, b, c, d) != c) { \ 53 fclose(d); \ 54 return -1; \ 55 } \ 56 } while(0) 57 58 void __collate_err(int ex, const char *f) __dead2; 59 60 int 61 __collate_load_tables(encoding) 62 char *encoding; 63 { 64 char buf[PATH_MAX]; 65 FILE *fp; 66 int i, save_load_error; 67 68 save_load_error = __collate_load_error; 69 __collate_load_error = 1; 70 if (!encoding) { 71 __collate_load_error = save_load_error; 72 return -1; 73 } 74 if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) 75 return 0; 76 if (!_PathLocale) { 77 __collate_load_error = save_load_error; 78 return -1; 79 } 80 /* Range checking not needed, encoding has fixed size */ 81 (void) strcpy(buf, _PathLocale); 82 (void) strcat(buf, "/"); 83 (void) strcat(buf, encoding); 84 (void) strcat(buf, "/LC_COLLATE"); 85 if ((fp = fopen(buf, "r")) == NULL) { 86 __collate_load_error = save_load_error; 87 return -1; 88 } 89 FREAD(__collate_version, sizeof(__collate_version), 1, fp); 90 if (strcmp(__collate_version, COLLATE_VERSION) != 0) { 91 fclose(fp); 92 return -1; 93 } 94 FREAD(__collate_substitute_table, sizeof(__collate_substitute_table), 95 1, fp); 96 FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1, 97 fp); 98 FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1, 99 fp); 100 fclose(fp); 101 __collate_load_error = 0; 102 103 __collate_substitute_nontrivial = 0; 104 for (i = 0; i < UCHAR_MAX + 1; i++) { 105 if (__collate_substitute_table[i][0] != i || 106 __collate_substitute_table[i][1] != 0) { 107 __collate_substitute_nontrivial = 1; 108 break; 109 } 110 } 111 112 return 0; 113 } 114 115 u_char * 116 __collate_substitute(s) 117 const u_char *s; 118 { 119 int dest_len, len, nlen; 120 int delta = strlen(s); 121 u_char *dest_str = NULL; 122 123 if(s == NULL || *s == '\0') 124 return __collate_strdup(""); 125 delta += delta / 8; 126 dest_str = malloc(dest_len = delta); 127 if(dest_str == NULL) 128 __collate_err(EX_OSERR, __FUNCTION__); 129 len = 0; 130 while(*s) { 131 nlen = len + strlen(__collate_substitute_table[*s]); 132 if (dest_len <= nlen) { 133 dest_str = reallocf(dest_str, dest_len = nlen + delta); 134 if(dest_str == NULL) 135 __collate_err(EX_OSERR, __FUNCTION__); 136 } 137 strcpy(dest_str + len, __collate_substitute_table[*s++]); 138 len = nlen; 139 } 140 return dest_str; 141 } 142 143 void 144 __collate_lookup(t, len, prim, sec) 145 const u_char *t; 146 int *len, *prim, *sec; 147 { 148 struct __collate_st_chain_pri *p2; 149 150 *len = 1; 151 *prim = *sec = 0; 152 for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) { 153 if(strncmp(t, p2->str, strlen(p2->str)) == 0) { 154 *len = strlen(p2->str); 155 *prim = p2->prim; 156 *sec = p2->sec; 157 return; 158 } 159 } 160 *prim = __collate_char_pri_table[*t].prim; 161 *sec = __collate_char_pri_table[*t].sec; 162 } 163 164 u_char * 165 __collate_strdup(s) 166 u_char *s; 167 { 168 u_char *t = strdup(s); 169 170 if (t == NULL) 171 __collate_err(EX_OSERR, __FUNCTION__); 172 return t; 173 } 174 175 void 176 __collate_err(int ex, const char *f) 177 { 178 extern char *__progname; /* Program name, from crt0. */ 179 const char *s; 180 int serrno = errno; 181 182 s = __progname; 183 _write(STDERR_FILENO, s, strlen(s)); 184 _write(STDERR_FILENO, ": ", 2); 185 s = f; 186 _write(STDERR_FILENO, s, strlen(s)); 187 _write(STDERR_FILENO, ": ", 2); 188 s = strerror(serrno); 189 _write(STDERR_FILENO, s, strlen(s)); 190 _write(STDERR_FILENO, "\n", 1); 191 exit(ex); 192 } 193 194 #ifdef COLLATE_DEBUG 195 void 196 __collate_print_tables() 197 { 198 int i; 199 struct __collate_st_chain_pri *p2; 200 201 printf("Substitute table:\n"); 202 for (i = 0; i < UCHAR_MAX + 1; i++) 203 if (i != *__collate_substitute_table[i]) 204 printf("\t'%c' --> \"%s\"\n", i, 205 __collate_substitute_table[i]); 206 printf("Chain priority table:\n"); 207 for (p2 = __collate_chain_pri_table; p2->str[0]; p2++) 208 printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec); 209 printf("Char priority table:\n"); 210 for (i = 0; i < UCHAR_MAX + 1; i++) 211 printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, 212 __collate_char_pri_table[i].sec); 213 } 214 #endif 215