| /*- |
| * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> |
| * at Electronni Visti IA, Kiev, Ukraine. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <sys/cdefs.h> |
| |
| #include "namespace.h" |
| #include <rune.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <sysexits.h> |
| #include "un-namespace.h" |
| |
| #include "collate.h" |
| |
| extern char *_PathLocale; |
| int __collate_load_error = 1; |
| int __collate_substitute_nontrivial; |
| char __collate_version[STR_LEN]; |
| u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN]; |
| struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1]; |
| struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE]; |
| |
| #define FREAD(a, b, c, d) \ |
| do { \ |
| if (fread(a, b, c, d) != c) { \ |
| fclose(d); \ |
| return -1; \ |
| } \ |
| } while(0) |
| |
| void __collate_err(int ex, const char *f); |
| |
| int |
| __collate_load_tables(encoding) |
| char *encoding; |
| { |
| char buf[PATH_MAX]; |
| FILE *fp; |
| int i, save_load_error; |
| |
| save_load_error = __collate_load_error; |
| __collate_load_error = 1; |
| if (!encoding) { |
| __collate_load_error = save_load_error; |
| return -1; |
| } |
| if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) |
| return 0; |
| if (!_PathLocale) { |
| __collate_load_error = save_load_error; |
| return -1; |
| } |
| /* Range checking not needed, encoding has fixed size */ |
| (void) strcpy(buf, _PathLocale); |
| (void) strcat(buf, "/"); |
| (void) strcat(buf, encoding); |
| (void) strcat(buf, "/LC_COLLATE"); |
| if ((fp = fopen(buf, "r")) == NULL) { |
| __collate_load_error = save_load_error; |
| return -1; |
| } |
| FREAD(__collate_version, sizeof(__collate_version), 1, fp); |
| if (strcmp(__collate_version, COLLATE_VERSION) != 0) { |
| fclose(fp); |
| return -1; |
| } |
| FREAD(__collate_substitute_table, sizeof(__collate_substitute_table), |
| 1, fp); |
| FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1, |
| fp); |
| FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1, |
| fp); |
| fclose(fp); |
| __collate_load_error = 0; |
| |
| __collate_substitute_nontrivial = 0; |
| for (i = 0; i < UCHAR_MAX + 1; i++) { |
| if (__collate_substitute_table[i][0] != i || |
| __collate_substitute_table[i][1] != 0) { |
| __collate_substitute_nontrivial = 1; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| u_char * |
| __collate_substitute(s) |
| const u_char *s; |
| { |
| int dest_len, len, nlen; |
| int delta = strlen(s); |
| u_char *dest_str = NULL; |
| |
| if(s == NULL || *s == '\0') |
| return __collate_strdup(""); |
| delta += delta / 8; |
| dest_str = malloc(dest_len = delta); |
| if(dest_str == NULL) |
| __collate_err(EX_OSERR, __FUNCTION__); |
| len = 0; |
| while(*s) { |
| nlen = len + strlen(__collate_substitute_table[*s]); |
| if (dest_len <= nlen) { |
| dest_str = reallocf(dest_str, dest_len = nlen + delta); |
| if(dest_str == NULL) |
| __collate_err(EX_OSERR, __FUNCTION__); |
| } |
| strcpy(dest_str + len, __collate_substitute_table[*s++]); |
| len = nlen; |
| } |
| return dest_str; |
| } |
| |
| void |
| __collate_lookup(t, len, prim, sec) |
| const u_char *t; |
| int *len, *prim, *sec; |
| { |
| struct __collate_st_chain_pri *p2; |
| |
| *len = 1; |
| *prim = *sec = 0; |
| for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) { |
| if(strncmp(t, p2->str, strlen(p2->str)) == 0) { |
| *len = strlen(p2->str); |
| *prim = p2->prim; |
| *sec = p2->sec; |
| return; |
| } |
| } |
| *prim = __collate_char_pri_table[*t].prim; |
| *sec = __collate_char_pri_table[*t].sec; |
| } |
| |
| u_char * |
| __collate_strdup(s) |
| u_char *s; |
| { |
| u_char *t = strdup(s); |
| |
| if (t == NULL) |
| __collate_err(EX_OSERR, __FUNCTION__); |
| return t; |
| } |
| |
| void |
| __collate_err(int ex, const char *f) |
| { |
| const char *s; |
| int serrno = errno; |
| |
| /* Be careful to change write counts if you change the strings */ |
| write(STDERR_FILENO, "collate_error: ", 15); |
| write(STDERR_FILENO, f, strlen(f)); |
| write(STDERR_FILENO, ": ", 2); |
| s = strerror(serrno); |
| write(STDERR_FILENO, s, strlen(s)); |
| write(STDERR_FILENO, "\n", 1); |
| exit(ex); |
| } |
| |
| #ifdef COLLATE_DEBUG |
| void |
| __collate_print_tables() |
| { |
| int i; |
| struct __collate_st_chain_pri *p2; |
| |
| printf("Substitute table:\n"); |
| for (i = 0; i < UCHAR_MAX + 1; i++) |
| if (i != *__collate_substitute_table[i]) |
| printf("\t'%c' --> \"%s\"\n", i, |
| __collate_substitute_table[i]); |
| printf("Chain priority table:\n"); |
| for (p2 = __collate_chain_pri_table; p2->str[0]; p2++) |
| printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec); |
| printf("Char priority table:\n"); |
| for (i = 0; i < UCHAR_MAX + 1; i++) |
| printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim, |
| __collate_char_pri_table[i].sec); |
| } |
| #endif |