diff options
Diffstat (limited to 'newlib/libc/posix/collate.c')
| -rw-r--r-- | newlib/libc/posix/collate.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/newlib/libc/posix/collate.c b/newlib/libc/posix/collate.c new file mode 100644 index 0000000..4e717bc --- /dev/null +++ b/newlib/libc/posix/collate.c @@ -0,0 +1,213 @@ +/*- + * 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 = strdup("collate_error"); + int serrno = errno; + + write(STDERR_FILENO, s, strlen(s)); + write(STDERR_FILENO, ": ", 2); + free(s); + s = f; + write(STDERR_FILENO, s, strlen(s)); + 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 |