[444] | 1 | /*- |
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| 2 | * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> |
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| 3 | * at Electronni Visti IA, Kiev, Ukraine. |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions |
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| 8 | * are met: |
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| 9 | * 1. Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * |
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| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND |
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| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE |
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| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 25 | * SUCH DAMAGE. |
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| 26 | */ |
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| 27 | |
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| 28 | #include <sys/cdefs.h> |
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| 29 | |
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| 30 | #include "namespace.h" |
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| 31 | #include <rune.h> |
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| 32 | #include <stdio.h> |
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| 33 | #include <stdlib.h> |
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| 34 | #include <string.h> |
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| 35 | #include <errno.h> |
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| 36 | #include <unistd.h> |
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| 37 | #include <sysexits.h> |
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| 38 | #include "un-namespace.h" |
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| 39 | |
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| 40 | #include "collate.h" |
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| 41 | |
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| 42 | extern char *_PathLocale; |
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| 43 | int __collate_load_error = 1; |
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| 44 | int __collate_substitute_nontrivial; |
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| 45 | char __collate_version[STR_LEN]; |
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| 46 | u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; |
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| 47 | struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; |
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| 48 | struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE]; |
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| 49 | |
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| 50 | #define FREAD(a, b, c, d) \ |
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| 51 | do { \ |
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| 52 | if (fread(a, b, c, d) != c) { \ |
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| 53 | fclose(d); \ |
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| 54 | return -1; \ |
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| 55 | } \ |
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| 56 | } while(0) |
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| 57 | |
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| 58 | void __collate_err(int ex, const char *f); |
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| 59 | |
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| 60 | int |
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| 61 | __collate_load_tables(encoding) |
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| 62 | char *encoding; |
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| 63 | { |
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| 64 | char buf[PATH_MAX]; |
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| 65 | FILE *fp; |
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| 66 | int i, save_load_error; |
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| 67 | |
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| 68 | save_load_error = __collate_load_error; |
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| 69 | __collate_load_error = 1; |
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| 70 | if (!encoding) { |
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| 71 | __collate_load_error = save_load_error; |
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| 72 | return -1; |
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| 73 | } |
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| 74 | if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) |
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| 75 | return 0; |
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| 76 | if (!_PathLocale) { |
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| 77 | __collate_load_error = save_load_error; |
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| 78 | return -1; |
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| 79 | } |
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| 80 | /* Range checking not needed, encoding has fixed size */ |
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| 81 | (void) strcpy(buf, _PathLocale); |
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| 82 | (void) strcat(buf, "/"); |
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| 83 | (void) strcat(buf, encoding); |
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| 84 | (void) strcat(buf, "/LC_COLLATE"); |
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| 85 | if ((fp = fopen(buf, "r")) == NULL) { |
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| 86 | __collate_load_error = save_load_error; |
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| 87 | return -1; |
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| 88 | } |
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| 89 | FREAD(__collate_version, sizeof(__collate_version), 1, fp); |
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| 90 | if (strcmp(__collate_version, COLLATE_VERSION) != 0) { |
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| 91 | fclose(fp); |
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| 92 | return -1; |
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| 93 | } |
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| 94 | FREAD(__collate_substitute_table, sizeof(__collate_substitute_table), |
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| 95 | 1, fp); |
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| 96 | FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1, |
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| 97 | fp); |
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| 98 | FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1, |
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| 99 | fp); |
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| 100 | fclose(fp); |
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| 101 | __collate_load_error = 0; |
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| 102 | |
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| 103 | __collate_substitute_nontrivial = 0; |
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| 104 | for (i = 0; i < UCHAR_MAX + 1; i++) { |
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| 105 | if (__collate_substitute_table[i][0] != i || |
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| 106 | __collate_substitute_table[i][1] != 0) { |
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| 107 | __collate_substitute_nontrivial = 1; |
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| 108 | break; |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | return 0; |
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| 113 | } |
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| 114 | |
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| 115 | u_char * |
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| 116 | __collate_substitute(s) |
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| 117 | const u_char *s; |
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| 118 | { |
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| 119 | int dest_len, len, nlen; |
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| 120 | int delta = strlen((const char *) s); |
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| 121 | u_char *dest_str = NULL; |
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| 122 | |
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| 123 | if(s == NULL || *s == '\0') |
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| 124 | return __collate_strdup((u_char *) ""); |
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| 125 | delta += delta / 8; |
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| 126 | dest_str = (u_char *) malloc(dest_len = delta); |
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| 127 | if(dest_str == NULL) |
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| 128 | __collate_err(EX_OSERR, __FUNCTION__); |
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| 129 | len = 0; |
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| 130 | while(*s) { |
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| 131 | nlen = len + strlen((const char *) |
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| 132 | __collate_substitute_table[*s]); |
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| 133 | if (dest_len <= nlen) { |
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| 134 | dest_str = reallocf(dest_str, dest_len = nlen + delta); |
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| 135 | if(dest_str == NULL) |
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| 136 | __collate_err(EX_OSERR, __FUNCTION__); |
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| 137 | } |
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| 138 | strcpy((char *) dest_str + len, |
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| 139 | (const char *) __collate_substitute_table[*s++]); |
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| 140 | len = nlen; |
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| 141 | } |
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| 142 | return dest_str; |
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| 143 | } |
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| 144 | |
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| 145 | void |
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| 146 | __collate_lookup(t, len, prim, sec) |
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| 147 | const u_char *t; |
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| 148 | int *len, *prim, *sec; |
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| 149 | { |
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| 150 | struct __collate_st_chain_pri *p2; |
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| 151 | |
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| 152 | *len = 1; |
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| 153 | *prim = *sec = 0; |
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| 154 | for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) { |
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| 155 | if(strncmp((const char *) t, (const char *) p2->str, |
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| 156 | strlen((const char *) p2->str)) == 0) { |
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| 157 | *len = strlen((const char *) p2->str); |
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| 158 | *prim = p2->prim; |
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| 159 | *sec = p2->sec; |
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| 160 | return; |
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| 161 | } |
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| 162 | } |
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| 163 | *prim = __collate_char_pri_table[*t].prim; |
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| 164 | *sec = __collate_char_pri_table[*t].sec; |
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| 165 | } |
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| 166 | |
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| 167 | u_char * |
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| 168 | __collate_strdup(s) |
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| 169 | u_char *s; |
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| 170 | { |
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| 171 | u_char *t = (u_char *) strdup((const char *) s); |
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| 172 | |
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| 173 | if (t == NULL) |
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| 174 | __collate_err(EX_OSERR, __FUNCTION__); |
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| 175 | return t; |
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| 176 | } |
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| 177 | |
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| 178 | void |
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| 179 | __collate_err(int ex, const char *f) |
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| 180 | { |
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| 181 | const char *s; |
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| 182 | int serrno = errno; |
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| 183 | int dummy; |
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| 184 | |
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| 185 | /* Be careful to change write counts if you change the strings */ |
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| 186 | write(STDERR_FILENO, "collate_error: ", 15); |
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| 187 | write(STDERR_FILENO, f, strlen(f)); |
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| 188 | write(STDERR_FILENO, ": ", 2); |
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| 189 | s = _strerror_r(_REENT, serrno, 1, &dummy); |
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| 190 | write(STDERR_FILENO, s, strlen(s)); |
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| 191 | write(STDERR_FILENO, "\n", 1); |
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| 192 | exit(ex); |
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| 193 | } |
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| 194 | |
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| 195 | #ifdef COLLATE_DEBUG |
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| 196 | void |
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| 197 | __collate_print_tables() |
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| 198 | { |
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| 199 | int i; |
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| 200 | struct __collate_st_chain_pri *p2; |
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| 201 | |
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| 202 | printf("Substitute table:\n"); |
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| 203 | for (i = 0; i < UCHAR_MAX + 1; i++) |
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| 204 | if (i != *__collate_substitute_table[i]) |
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| 205 | printf("\t'%c' --> \"%s\"\n", i, |
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| 206 | __collate_substitute_table[i]); |
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| 207 | printf("Chain priority table:\n"); |
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| 208 | for (p2 = __collate_chain_pri_table; p2->str[0]; p2++) |
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| 209 | printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec); |
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| 210 | printf("Char priority table:\n"); |
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| 211 | for (i = 0; i < UCHAR_MAX + 1; i++) |
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| 212 | printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, |
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| 213 | __collate_char_pri_table[i].sec); |
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| 214 | } |
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| 215 | #endif |
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