1/* $FreeBSD$ */
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 */
41int
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 */
60int
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 */
80const char *
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 */
93const char *
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 */
106const char *
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 */
121const char *
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 */
136void
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 */
147void
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 */
160void
161_citrus_bcs_convert_to_upper(char *s)
162{
163
164	while (*s) {
165		*s = _bcs_toupper(*s);
166		s++;
167	}
168}
169