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[dragonfly.git] / lib / libc / citrus / citrus_bcs.c
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1/* $NetBSD: citrus_bcs.c,v 1.5 2005/05/14 17:55:42 tshiozak Exp $ */
2/* $DragonFly: src/lib/libc/citrus/citrus_bcs.c,v 1.3 2008/04/10 10:21:01 hasso Exp $ */
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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/types.h>
31#include <assert.h>
32#include <stdlib.h>
33
34#include "citrus_namespace.h"
35#include "citrus_bcs.h"
36
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37/*
38 * case insensitive comparison between two C strings.
39 */
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40int
41_citrus_bcs_strcasecmp(const char * __restrict str1,
42 const char * __restrict str2)
43{
44 int c1 = 1, c2 = 1;
45
46 while (c1 && c2 && c1 == c2) {
47 c1 = _bcs_toupper(*str1++);
48 c2 = _bcs_toupper(*str2++);
49 }
50
51 return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
52}
53
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54/*
55 * case insensitive comparison between two C strings with limitation of length.
56 */
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57int
58_citrus_bcs_strncasecmp(const char * __restrict str1,
59 const char * __restrict str2, size_t sz)
60{
61 int c1 = 1, c2 = 1;
62
63 while (c1 && c2 && c1 == c2 && sz != 0) {
64 c1 = _bcs_toupper(*str1++);
65 c2 = _bcs_toupper(*str2++);
66 sz--;
67 }
68
69 return ((c1 == c2) ? 0 : ((c1 > c2) ? 1 : -1));
70}
71
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72/*
73 * skip white space characters.
74 */
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75const char *
76_citrus_bcs_skip_ws(const char *p)
77{
78
79 while (*p && _bcs_isspace(*p))
80 p++;
81
82 return (p);
83}
84
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85/*
86 * skip non white space characters.
87 */
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88const char *
89_citrus_bcs_skip_nonws(const char *p)
90{
91
92 while (*p && !_bcs_isspace(*p))
93 p++;
94
95 return (p);
96}
97
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98/*
99 * skip white space characters with limitation of length.
100 */
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101const char *
102_citrus_bcs_skip_ws_len(const char * __restrict p, size_t * __restrict len)
103{
104
105 while (*p && *len > 0 && _bcs_isspace(*p)) {
106 p++;
107 (*len)--;
108 }
109
110 return (p);
111}
112
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113/*
114 * skip non white space characters with limitation of length.
115 */
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116const char *
117_citrus_bcs_skip_nonws_len(const char * __restrict p, size_t * __restrict len)
118{
119
120 while (*p && *len > 0 && !_bcs_isspace(*p)) {
121 p++;
122 (*len)--;
123 }
124
125 return (p);
126}
127
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128/*
129 * truncate trailing white space characters.
130 */
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131void
132_citrus_bcs_trunc_rws_len(const char * __restrict p, size_t * __restrict len)
133{
134
135 while (*len > 0 && _bcs_isspace(p[*len - 1]))
136 (*len)--;
137}
138
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139/*
140 * destructive transliterate to lowercase.
141 */
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142void
143_citrus_bcs_convert_to_lower(char *s)
144{
145 while (*s) {
146 *s = _bcs_tolower(*s);
147 s++;
148 }
149}
150
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151/*
152 * destructive transliterate to uppercase.
153 */
154void
155_citrus_bcs_convert_to_upper(char *s)
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156{
157 while (*s) {
158 *s = _bcs_toupper(*s);
159 s++;
160 }
161}