Build aicasm as host program, not via world's compiler.
[dragonfly.git] / lib / libc / locale / ldpart.c
CommitLineData
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1/*
2 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
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25 *
26 * $FreeBSD: src/lib/libc/locale/ldpart.c,v 1.7.2.3 2002/08/12 11:17:37 ache Exp $
27 * $DragonFly: src/lib/libc/locale/Attic/ldpart.c,v 1.2 2003/06/17 04:26:44 dillon Exp $
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28 */
29
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30#include <sys/types.h>
31#include <sys/stat.h>
32#include <sys/syslimits.h>
33#include <errno.h>
34#include <fcntl.h>
35#include <stdlib.h>
36#include <string.h>
37#include <unistd.h>
38
39#include "setlocale.h"
40#include "ldpart.h"
41
42static int split_lines(char *, const char *);
43
44int
45__part_load_locale(const char *name,
46 int *using_locale,
47 char *locale_buf,
48 const char *category_filename,
49 int locale_buf_size_max,
50 int locale_buf_size_min,
51 const char **dst_localebuf)
52{
53 int saverr, fd, i, num_lines;
54 char *lbuf, *p;
55 const char *plim;
56 char filename[PATH_MAX];
57 struct stat st;
58 size_t namesize, bufsize;
59
60 /* 'name' must be already checked. */
61 if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) {
62 *using_locale = 0;
63 return (_LDP_CACHE);
64 }
65
66 /*
67 * If the locale name is the same as our cache, use the cache.
68 */
69 if (locale_buf != NULL && strcmp(name, locale_buf) == 0) {
70 *using_locale = 1;
71 return (_LDP_CACHE);
72 }
73
74 /*
75 * Slurp the locale file into the cache.
76 */
77 namesize = strlen(name) + 1;
78
79 /* 'PathLocale' must be already set & checked. */
80 /* Range checking not needed, 'name' size is limited */
81 strcpy(filename, _PathLocale);
82 strcat(filename, "/");
83 strcat(filename, name);
84 strcat(filename, "/");
85 strcat(filename, category_filename);
86 if ((fd = _open(filename, O_RDONLY)) < 0)
87 return (_LDP_ERROR);
88 if (_fstat(fd, &st) != 0)
89 goto bad_locale;
90 if (st.st_size <= 0) {
91 errno = EFTYPE;
92 goto bad_locale;
93 }
94 bufsize = namesize + st.st_size;
95 if ((lbuf = malloc(bufsize)) == NULL) {
96 errno = ENOMEM;
97 goto bad_locale;
98 }
99 (void)strcpy(lbuf, name);
100 p = lbuf + namesize;
101 plim = p + st.st_size;
102 if (_read(fd, p, (size_t) st.st_size) != st.st_size)
103 goto bad_lbuf;
104 /*
105 * Parse the locale file into localebuf.
106 */
107 if (plim[-1] != '\n') {
108 errno = EFTYPE;
109 goto bad_lbuf;
110 }
111 num_lines = split_lines(p, plim);
112 if (num_lines >= locale_buf_size_max)
113 num_lines = locale_buf_size_max;
114 else if (num_lines >= locale_buf_size_min)
115 num_lines = locale_buf_size_min;
116 else {
117 errno = EFTYPE;
118 goto bad_lbuf;
119 }
120 (void)_close(fd);
121 /*
122 * Record the successful parse in the cache.
123 */
124 if (locale_buf != NULL)
125 free(locale_buf);
126 locale_buf = lbuf;
127 for (p = locale_buf, i = 0; i < num_lines; i++)
128 dst_localebuf[i] = (p += strlen(p) + 1);
129 for (i = num_lines; i < locale_buf_size_max; i++)
130 dst_localebuf[i] = NULL;
131 *using_locale = 1;
132
133 return (_LDP_LOADED);
134
135bad_lbuf:
136 saverr = errno;
137 free(lbuf);
138 errno = saverr;
139bad_locale:
140 saverr = errno;
141 (void)_close(fd);
142 errno = saverr;
143
144 return (_LDP_ERROR);
145}
146
147static int
148split_lines(char *p, const char *plim)
149{
150 int i;
151
152 for (i = 0; p < plim; i++) {
153 p = strchr(p, '\n');
154 *p++ = '\0';
155 }
156 return (i);
157}
158