xref: /dragonfly/lib/libc/citrus/citrus_bcs.c (revision 0d5acd74)
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