1 /* $FreeBSD: head/lib/libc/iconv/citrus_bcs.c 219019 2011-02-25 00:04:39Z gabor $ */
2 /* $NetBSD: citrus_bcs.c,v 1.5 2005/05/14 17:55:42 tshiozak Exp $ */
3
4 /*-
5 * Copyright (c)2003 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31
32 #include <assert.h>
33 #include <stdlib.h>
34
35 #include "citrus_namespace.h"
36 #include "citrus_bcs.h"
37
38 /*
39 * case insensitive comparison between two C strings.
40 */
41 int
_citrus_bcs_strcasecmp(const char * __restrict str1,const char * __restrict str2)42 _citrus_bcs_strcasecmp(const char * __restrict str1,
43 const char * __restrict str2)
44 {
45 int c1, c2;
46
47 c1 = c2 = 1;
48
49 while (c1 && c2 && c1 == c2) {
50 c1 = _bcs_toupper(*str1++);
51 c2 = _bcs_toupper(*str2++);
52 }
53
54 return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
55 }
56
57 /*
58 * case insensitive comparison between two C strings with limitation of length.
59 */
60 int
_citrus_bcs_strncasecmp(const char * __restrict str1,const char * __restrict str2,size_t sz)61 _citrus_bcs_strncasecmp(const char * __restrict str1,
62 const char * __restrict str2, size_t sz)
63 {
64 int c1, c2;
65
66 c1 = c2 = 1;
67
68 while (c1 && c2 && c1 == c2 && sz != 0) {
69 c1 = _bcs_toupper(*str1++);
70 c2 = _bcs_toupper(*str2++);
71 sz--;
72 }
73
74 return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
75 }
76
77 /*
78 * skip white space characters.
79 */
80 const char *
_citrus_bcs_skip_ws(const char * p)81 _citrus_bcs_skip_ws(const char *p)
82 {
83
84 while (*p && _bcs_isspace(*p))
85 p++;
86
87 return (p);
88 }
89
90 /*
91 * skip non white space characters.
92 */
93 const char *
_citrus_bcs_skip_nonws(const char * p)94 _citrus_bcs_skip_nonws(const char *p)
95 {
96
97 while (*p && !_bcs_isspace(*p))
98 p++;
99
100 return (p);
101 }
102
103 /*
104 * skip white space characters with limitation of length.
105 */
106 const char *
_citrus_bcs_skip_ws_len(const char * __restrict p,size_t * __restrict len)107 _citrus_bcs_skip_ws_len(const char * __restrict p, size_t * __restrict len)
108 {
109
110 while (*p && *len > 0 && _bcs_isspace(*p)) {
111 p++;
112 (*len)--;
113 }
114
115 return (p);
116 }
117
118 /*
119 * skip non white space characters with limitation of length.
120 */
121 const char *
_citrus_bcs_skip_nonws_len(const char * __restrict p,size_t * __restrict len)122 _citrus_bcs_skip_nonws_len(const char * __restrict p, size_t * __restrict len)
123 {
124
125 while (*p && *len > 0 && !_bcs_isspace(*p)) {
126 p++;
127 (*len)--;
128 }
129
130 return (p);
131 }
132
133 /*
134 * truncate trailing white space characters.
135 */
136 void
_citrus_bcs_trunc_rws_len(const char * __restrict p,size_t * __restrict len)137 _citrus_bcs_trunc_rws_len(const char * __restrict p, size_t * __restrict len)
138 {
139
140 while (*len > 0 && _bcs_isspace(p[*len - 1]))
141 (*len)--;
142 }
143
144 /*
145 * destructive transliterate to lowercase.
146 */
147 void
_citrus_bcs_convert_to_lower(char * s)148 _citrus_bcs_convert_to_lower(char *s)
149 {
150
151 while (*s) {
152 *s = _bcs_tolower(*s);
153 s++;
154 }
155 }
156
157 /*
158 * destructive transliterate to uppercase.
159 */
160 void
_citrus_bcs_convert_to_upper(char * s)161 _citrus_bcs_convert_to_upper(char *s)
162 {
163
164 while (*s) {
165 *s = _bcs_toupper(*s);
166 s++;
167 }
168 }
169