[apple/libc.git] / locale / FreeBSD / collate.c

/*-
 * 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>
__FBSDID("$FreeBSD: src/lib/libc/locale/collate.c,v 1.33 2004/09/22 16:56:48 stefanf Exp $");

#include "namespace.h"
#include <arpa/inet.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"
#include "setlocale.h"
#include "ldpart.h"

#include "libc_private.h"

int __collate_load_error = 1;
int __collate_substitute_nontrivial;

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;

void __collate_err(int ex, const char *f) __dead2;

int
__collate_load_tables(const char *encoding)
{
	FILE *fp;
	int i, saverr, chains;
	uint32_t u32;
	char strbuf[STR_LEN], buf[PATH_MAX];
	void *TMP_substitute_table, *TMP_char_pri_table, *TMP_chain_pri_table;
	static char collate_encoding[ENCODING_LEN + 1];

	/* 'encoding' must be already checked. */
	if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) {
		__collate_load_error = 1;
		return (_LDP_CACHE);
	}

	/*
	 * If the locale name is the same as our cache, use the cache.
	 */
	if (strcmp(encoding, collate_encoding) == 0) {
		__collate_load_error = 0;
		return (_LDP_CACHE);
	}

	/*
	 * Slurp the locale file into the cache.
	 */

	/* 'PathLocale' must be already set & checked. */
	/* 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)
		return (_LDP_ERROR);

	if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) {
		saverr = errno;
		(void)fclose(fp);
		errno = saverr;
		return (_LDP_ERROR);
	}
	chains = -1;
	if (strcmp(strbuf, COLLATE_VERSION) == 0)
		chains = 0;
	else if (strcmp(strbuf, COLLATE_VERSION1_1) == 0)
		chains = 1;
	if (chains < 0) {
		(void)fclose(fp);
		errno = EFTYPE;
		return (_LDP_ERROR);
	}
	if (chains) {
		if (fread(&u32, sizeof(u32), 1, fp) != 1) {
			saverr = errno;
			(void)fclose(fp);
			errno = saverr;
			return (_LDP_ERROR);
		}
		if ((chains = (int)ntohl(u32)) < 1) {
			(void)fclose(fp);
			errno = EFTYPE;
			return (_LDP_ERROR);
		}
	} else
		chains = TABLE_SIZE;

	if ((TMP_substitute_table =
	     malloc(sizeof(__collate_substitute_table))) == NULL) {
		saverr = errno;
		(void)fclose(fp);
		errno = saverr;
		return (_LDP_ERROR);
	}
	if ((TMP_char_pri_table =
	     malloc(sizeof(__collate_char_pri_table))) == NULL) {
		saverr = errno;
		free(TMP_substitute_table);
		(void)fclose(fp);
		errno = saverr;
		return (_LDP_ERROR);
	}
	if ((TMP_chain_pri_table =
	     malloc(sizeof(*__collate_chain_pri_table) * chains)) == NULL) {
		saverr = errno;
		free(TMP_substitute_table);
		free(TMP_char_pri_table);
		(void)fclose(fp);
		errno = saverr;
		return (_LDP_ERROR);
	}

#define FREAD(a, b, c, d) \
{ \
	if (fread(a, b, c, d) != c) { \
		saverr = errno; \
		free(TMP_substitute_table); \
		free(TMP_char_pri_table); \
		free(TMP_chain_pri_table); \
		(void)fclose(d); \
		errno = saverr; \
		return (_LDP_ERROR); \
	} \
}

	FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp);
	FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp);
	FREAD(TMP_chain_pri_table,
	      sizeof(*__collate_chain_pri_table), chains, fp);
	(void)fclose(fp);

	(void)strcpy(collate_encoding, encoding);
	if (__collate_substitute_table_ptr != NULL)
		free(__collate_substitute_table_ptr);
	__collate_substitute_table_ptr = TMP_substitute_table;
	if (__collate_char_pri_table_ptr != NULL)
		free(__collate_char_pri_table_ptr);
	__collate_char_pri_table_ptr = TMP_char_pri_table;
	if (__collate_chain_pri_table != NULL)
		free(__collate_chain_pri_table);
	__collate_chain_pri_table = TMP_chain_pri_table;
	
	__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;
		}
	}
	__collate_load_error = 0;

	return (_LDP_LOADED);
}

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, __func__);
	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, __func__);
		}
		(void)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] != '\0'; p2++) {
		if (*t == p2->str[0] &&
		    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, __func__);
	return (t);
}

void
__collate_err(int ex, const char *f)
{
	const char *s;
	int serrno = errno;

	s = _getprogname();
	_write(STDERR_FILENO, s, strlen(s));
	_write(STDERR_FILENO, ": ", 2);
	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] != '\0'; p2++)
		printf("\t\"%s\" : %d %d\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
Commit	Line	Data
9385eb3d A	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
	28	#include <sys/cdefs.h>
3d9156a7	29	__FBSDID("$FreeBSD: src/lib/libc/locale/collate.c,v 1.33 2004/09/22 16:56:48 stefanf Exp $");
9385eb3d A	30
	31	#include "namespace.h"
	32	#include <arpa/inet.h>
	33	#include <stdio.h>
	34	#include <stdlib.h>
	35	#include <string.h>
	36	#include <errno.h>
	37	#include <unistd.h>
	38	#include <sysexits.h>
	39	#include "un-namespace.h"
	40
	41	#include "collate.h"
	42	#include "setlocale.h"
	43	#include "ldpart.h"
	44
	45	#include "libc_private.h"
	46
	47	int __collate_load_error = 1;
	48	int __collate_substitute_nontrivial;
	49
	50	u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN];
	51	struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1];
	52	struct __collate_st_chain_pri *__collate_chain_pri_table;
	53
	54	void __collate_err(int ex, const char *f) __dead2;
	55
	56	int
	57	__collate_load_tables(const char *encoding)
	58	{
	59	FILE *fp;
	60	int i, saverr, chains;
	61	uint32_t u32;
	62	char strbuf[STR_LEN], buf[PATH_MAX];
	63	void TMP_substitute_table, TMP_char_pri_table, *TMP_chain_pri_table;
	64	static char collate_encoding[ENCODING_LEN + 1];
	65
	66	/* 'encoding' must be already checked. */
	67	if (strcmp(encoding, "C") == 0 \|\| strcmp(encoding, "POSIX") == 0) {
	68	__collate_load_error = 1;
	69	return (_LDP_CACHE);
	70	}
	71
	72	/*
	73	* If the locale name is the same as our cache, use the cache.
	74	*/
	75	if (strcmp(encoding, collate_encoding) == 0) {
	76	__collate_load_error = 0;
	77	return (_LDP_CACHE);
	78	}
	79
	80	/*
	81	* Slurp the locale file into the cache.
	82	*/
	83
	84	/* 'PathLocale' must be already set & checked. */
	85	/* Range checking not needed, encoding has fixed size */
	86	(void)strcpy(buf, _PathLocale);
	87	(void)strcat(buf, "/");
	88	(void)strcat(buf, encoding);
	89	(void)strcat(buf, "/LC_COLLATE");
	90	if ((fp = fopen(buf, "r")) == NULL)
	91	return (_LDP_ERROR);
	92
	93	if (fread(strbuf, sizeof(strbuf), 1, fp) != 1) {
94	saverr = errno;
95	(void)fclose(fp);
96	errno = saverr;
97	return (_LDP_ERROR);
98	}
99	chains = -1;
100	if (strcmp(strbuf, COLLATE_VERSION) == 0)
101	chains = 0;
102	else if (strcmp(strbuf, COLLATE_VERSION1_1) == 0)
103	chains = 1;
104	if (chains < 0) {
105	(void)fclose(fp);
106	errno = EFTYPE;
107	return (_LDP_ERROR);
108	}
109	if (chains) {
110	if (fread(&u32, sizeof(u32), 1, fp) != 1) {
111	saverr = errno;
112	(void)fclose(fp);
113	errno = saverr;
114	return (_LDP_ERROR);
115	}
116	if ((chains = (int)ntohl(u32)) < 1) {
117	(void)fclose(fp);
118	errno = EFTYPE;
119	return (_LDP_ERROR);
120	}
121	} else
122	chains = TABLE_SIZE;
123
124	if ((TMP_substitute_table =
125	malloc(sizeof(__collate_substitute_table))) == NULL) {
126	saverr = errno;
127	(void)fclose(fp);
128	errno = saverr;
129	return (_LDP_ERROR);
130	}
131	if ((TMP_char_pri_table =
132	malloc(sizeof(__collate_char_pri_table))) == NULL) {
133	saverr = errno;
134	free(TMP_substitute_table);
135	(void)fclose(fp);
136	errno = saverr;
137	return (_LDP_ERROR);
138	}
139	if ((TMP_chain_pri_table =
140	malloc(sizeof(__collate_chain_pri_table) chains)) == NULL) {
141	saverr = errno;
142	free(TMP_substitute_table);
143	free(TMP_char_pri_table);
144	(void)fclose(fp);
145	errno = saverr;
146	return (_LDP_ERROR);
147	}
148
149	#define FREAD(a, b, c, d) \
150	{ \
151	if (fread(a, b, c, d) != c) { \
152	saverr = errno; \
153	free(TMP_substitute_table); \
154	free(TMP_char_pri_table); \
155	free(TMP_chain_pri_table); \
156	(void)fclose(d); \
157	errno = saverr; \
158	return (_LDP_ERROR); \
159	} \
160	}
161
162	FREAD(TMP_substitute_table, sizeof(__collate_substitute_table), 1, fp);
163	FREAD(TMP_char_pri_table, sizeof(__collate_char_pri_table), 1, fp);
164	FREAD(TMP_chain_pri_table,
165	sizeof(*__collate_chain_pri_table), chains, fp);
166	(void)fclose(fp);
167
168	(void)strcpy(collate_encoding, encoding);
169	if (__collate_substitute_table_ptr != NULL)
170	free(__collate_substitute_table_ptr);
171	__collate_substitute_table_ptr = TMP_substitute_table;
172	if (__collate_char_pri_table_ptr != NULL)
173	free(__collate_char_pri_table_ptr);
174	__collate_char_pri_table_ptr = TMP_char_pri_table;
175	if (__collate_chain_pri_table != NULL)
176	free(__collate_chain_pri_table);
177	__collate_chain_pri_table = TMP_chain_pri_table;
178
179	__collate_substitute_nontrivial = 0;
180	for (i = 0; i < UCHAR_MAX + 1; i++) {
181	if (__collate_substitute_table[i][0] != i \|\|
182	__collate_substitute_table[i][1] != 0) {
183	__collate_substitute_nontrivial = 1;
184	break;
185	}
186	}
187	__collate_load_error = 0;
188
189	return (_LDP_LOADED);
190	}
191
192	u_char *
193	__collate_substitute(s)
194	const u_char *s;
195	{
196	int dest_len, len, nlen;
197	int delta = strlen(s);
198	u_char *dest_str = NULL;
199
200	if (s == NULL \|\| *s == '\0')
201	return (__collate_strdup(""));
202	delta += delta / 8;
203	dest_str = malloc(dest_len = delta);
204	if (dest_str == NULL)
3d9156a7	205	__collate_err(EX_OSERR, __func__);
9385eb3d A	206	len = 0;
	207	while (*s) {
	208	nlen = len + strlen(__collate_substitute_table[*s]);
	209	if (dest_len <= nlen) {
	210	dest_str = reallocf(dest_str, dest_len = nlen + delta);
	211	if (dest_str == NULL)
3d9156a7	212	__collate_err(EX_OSERR, __func__);
9385eb3d A	213	}
	214	(void)strcpy(dest_str + len, __collate_substitute_table[*s++]);
	215	len = nlen;
	216	}
	217	return (dest_str);
	218	}
	219
	220	void
	221	__collate_lookup(t, len, prim, sec)
	222	const u_char *t;
	223	int len, prim, *sec;
	224	{
	225	struct __collate_st_chain_pri *p2;
	226
	227	*len = 1;
	228	prim = sec = 0;
	229	for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++) {
	230	if (*t == p2->str[0] &&
	231	strncmp(t, p2->str, strlen(p2->str)) == 0) {
	232	*len = strlen(p2->str);
	233	*prim = p2->prim;
	234	*sec = p2->sec;
	235	return;
	236	}
	237	}
	238	prim = __collate_char_pri_table[t].prim;
	239	sec = __collate_char_pri_table[t].sec;
	240	}
	241
	242	u_char *
	243	__collate_strdup(s)
	244	u_char *s;
	245	{
	246	u_char *t = strdup(s);
	247
	248	if (t == NULL)
3d9156a7	249	__collate_err(EX_OSERR, __func__);
9385eb3d A	250	return (t);
	251	}
	252
	253	void
	254	__collate_err(int ex, const char *f)
	255	{
	256	const char *s;
	257	int serrno = errno;
	258
	259	s = _getprogname();
	260	_write(STDERR_FILENO, s, strlen(s));
	261	_write(STDERR_FILENO, ": ", 2);
	262	s = f;
	263	_write(STDERR_FILENO, s, strlen(s));
	264	_write(STDERR_FILENO, ": ", 2);
	265	s = strerror(serrno);
	266	_write(STDERR_FILENO, s, strlen(s));
	267	_write(STDERR_FILENO, "\n", 1);
	268	exit(ex);
	269	}
	270
	271	#ifdef COLLATE_DEBUG
	272	void
	273	__collate_print_tables()
	274	{
	275	int i;
	276	struct __collate_st_chain_pri *p2;
	277
	278	printf("Substitute table:\n");
	279	for (i = 0; i < UCHAR_MAX + 1; i++)
	280	if (i != *__collate_substitute_table[i])
	281	printf("\t'%c' --> \"%s\"\n", i,
	282	__collate_substitute_table[i]);
	283	printf("Chain priority table:\n");
	284	for (p2 = __collate_chain_pri_table; p2->str[0] != '\0'; p2++)
	285	printf("\t\"%s\" : %d %d\n", p2->str, p2->prim, p2->sec);
	286	printf("Char priority table:\n");
	287	for (i = 0; i < UCHAR_MAX + 1; i++)
	288	printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim,
	289	__collate_char_pri_table[i].sec);
	290	}
	291	#endif