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293 lines
7.6 KiB
C
293 lines
7.6 KiB
C
/*-
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* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
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* at Electronni Visti IA, Kiev, Ukraine.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <arpa/inet.h>
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#include <rune.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sysexits.h>
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#include "un-namespace.h"
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#include "collate.h"
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#include "setlocale.h"
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#include "ldpart.h"
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#include "libc_private.h"
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int __collate_load_error = 1;
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int __collate_substitute_nontrivial;
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u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN];
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struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1];
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struct __collate_st_chain_pri *__collate_chain_pri_table;
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void __collate_err(int ex, const char *f) __dead2;
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int
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__collate_load_tables(const char *encoding)
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{
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FILE *fp;
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int i, saverr, chains;
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uint32_t u32;
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char strbuf[STR_LEN], buf[PATH_MAX];
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void *TMP_substitute_table, *TMP_char_pri_table, *TMP_chain_pri_table;
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static char collate_encoding[ENCODING_LEN + 1];
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/* 'encoding' must be already checked. */
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if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) {
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__collate_load_error = 1;
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return (_LDP_CACHE);
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}
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/*
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* If the locale name is the same as our cache, use the cache.
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*/
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if (strcmp(encoding, collate_encoding) == 0) {
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__collate_load_error = 0;
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return (_LDP_CACHE);
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}
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/*
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* Slurp the locale file into the cache.
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*/
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/* 'PathLocale' must be already set & checked. */
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/* Range checking not needed, encoding has fixed size */
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(void)strcpy(buf, _PathLocale);
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(void)strcat(buf, "/");
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(void)strcat(buf, encoding);
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(void)strcat(buf, "/LC_COLLATE");
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if ((fp = fopen(buf, "r")) == NULL)
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return (_LDP_ERROR);
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if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) {
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saverr = errno;
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(void)fclose(fp);
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errno = saverr;
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return (_LDP_ERROR);
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}
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chains = -1;
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if (strcmp(strbuf, COLLATE_VERSION) == 0)
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chains = 0;
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else if (strcmp(strbuf, COLLATE_VERSION1_1) == 0)
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chains = 1;
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if (chains < 0) {
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(void)fclose(fp);
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errno = EFTYPE;
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return (_LDP_ERROR);
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}
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if (chains) {
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if (fread(&u32, sizeof(u32), 1, fp) != 1) {
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saverr = errno;
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(void)fclose(fp);
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errno = saverr;
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return (_LDP_ERROR);
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}
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if ((chains = (int)ntohl(u32)) < 1) {
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(void)fclose(fp);
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errno = EFTYPE;
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return (_LDP_ERROR);
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}
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} else
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chains = TABLE_SIZE;
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if ((TMP_substitute_table =
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malloc(sizeof(__collate_substitute_table))) == NULL) {
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saverr = errno;
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(void)fclose(fp);
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errno = saverr;
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return (_LDP_ERROR);
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}
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if ((TMP_char_pri_table =
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malloc(sizeof(__collate_char_pri_table))) == NULL) {
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saverr = errno;
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free(TMP_substitute_table);
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(void)fclose(fp);
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errno = saverr;
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return (_LDP_ERROR);
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}
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if ((TMP_chain_pri_table =
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malloc(sizeof(*__collate_chain_pri_table) * chains)) == NULL) {
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saverr = errno;
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free(TMP_substitute_table);
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free(TMP_char_pri_table);
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(void)fclose(fp);
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errno = saverr;
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return (_LDP_ERROR);
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}
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#define FREAD(a, b, c, d) \
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{ \
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if (fread(a, b, c, d) != c) { \
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saverr = errno; \
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free(TMP_substitute_table); \
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free(TMP_char_pri_table); \
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free(TMP_chain_pri_table); \
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(void)fclose(d); \
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errno = saverr; \
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return (_LDP_ERROR); \
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} \
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}
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FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp);
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FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp);
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FREAD(TMP_chain_pri_table,
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sizeof(*__collate_chain_pri_table), chains, fp);
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(void)fclose(fp);
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(void)strcpy(collate_encoding, encoding);
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if (__collate_substitute_table_ptr != NULL)
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free(__collate_substitute_table_ptr);
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__collate_substitute_table_ptr = TMP_substitute_table;
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if (__collate_char_pri_table_ptr != NULL)
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free(__collate_char_pri_table_ptr);
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__collate_char_pri_table_ptr = TMP_char_pri_table;
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if (__collate_chain_pri_table != NULL)
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free(__collate_chain_pri_table);
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__collate_chain_pri_table = TMP_chain_pri_table;
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__collate_substitute_nontrivial = 0;
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for (i = 0; i < UCHAR_MAX + 1; i++) {
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if (__collate_substitute_table[i][0] != i ||
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__collate_substitute_table[i][1] != 0) {
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__collate_substitute_nontrivial = 1;
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break;
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}
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}
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__collate_load_error = 0;
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return (_LDP_LOADED);
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}
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u_char *
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__collate_substitute(s)
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const u_char *s;
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{
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int dest_len, len, nlen;
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int delta = strlen(s);
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u_char *dest_str = NULL;
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if (s == NULL || *s == '\0')
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return (__collate_strdup(""));
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delta += delta / 8;
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dest_str = malloc(dest_len = delta);
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if (dest_str == NULL)
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__collate_err(EX_OSERR, __FUNCTION__);
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len = 0;
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while (*s) {
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nlen = len + strlen(__collate_substitute_table[*s]);
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if (dest_len <= nlen) {
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dest_str = reallocf(dest_str, dest_len = nlen + delta);
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if (dest_str == NULL)
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__collate_err(EX_OSERR, __FUNCTION__);
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}
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(void)strcpy(dest_str + len, __collate_substitute_table[*s++]);
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len = nlen;
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}
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return (dest_str);
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}
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void
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__collate_lookup(t, len, prim, sec)
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const u_char *t;
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int *len, *prim, *sec;
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{
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struct __collate_st_chain_pri *p2;
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*len = 1;
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*prim = *sec = 0;
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for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) {
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if (*t == p2->str[0] &&
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strncmp(t, p2->str, strlen(p2->str)) == 0) {
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*len = strlen(p2->str);
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*prim = p2->prim;
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*sec = p2->sec;
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return;
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}
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}
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*prim = __collate_char_pri_table[*t].prim;
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*sec = __collate_char_pri_table[*t].sec;
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}
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u_char *
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__collate_strdup(s)
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u_char *s;
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{
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u_char *t = strdup(s);
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if (t == NULL)
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__collate_err(EX_OSERR, __FUNCTION__);
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return (t);
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}
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void
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__collate_err(int ex, const char *f)
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{
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const char *s;
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int serrno = errno;
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s = _getprogname();
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_write(STDERR_FILENO, s, strlen(s));
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_write(STDERR_FILENO, ": ", 2);
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s = f;
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_write(STDERR_FILENO, s, strlen(s));
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_write(STDERR_FILENO, ": ", 2);
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s = strerror(serrno);
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_write(STDERR_FILENO, s, strlen(s));
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_write(STDERR_FILENO, "\n", 1);
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exit(ex);
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}
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#ifdef COLLATE_DEBUG
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void
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__collate_print_tables()
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{
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int i;
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struct __collate_st_chain_pri *p2;
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printf("Substitute table:\n");
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for (i = 0; i < UCHAR_MAX + 1; i++)
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if (i != *__collate_substitute_table[i])
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printf("\t'%c' --> \"%s\"\n", i,
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__collate_substitute_table[i]);
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printf("Chain priority table:\n");
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for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++)
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printf("\t\"%s\" : %d %d\n", p2->str, p2->prim, p2->sec);
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printf("Char priority table:\n");
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for (i = 0; i < UCHAR_MAX + 1; i++)
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printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim,
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__collate_char_pri_table[i].sec);
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}
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#endif
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