lib/libc/citrus/citrus_bcs.c

   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 $ */
   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
  37 /*
  38  * case insensitive comparison between two C strings.
  39  */
  40 int
  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
  54 /*
  55  * case insensitive comparison between two C strings with limitation of length.
  56  */
  57 int
  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
  72 /*
  73  * skip white space characters.
  74  */
  75 const 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
  85 /*
  86  * skip non white space characters.
  87  */
  88 const 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
  98 /*
  99  * skip white space characters with limitation of length.
 100  */
 101 const 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
 113 /*
 114  * skip non white space characters with limitation of length.
 115  */
 116 const 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
 128 /*
 129  * truncate trailing white space characters.
 130  */
 131 void
 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
 139 /*
 140  * destructive transliterate to lowercase.
 141  */
 142 void
 143 _citrus_bcs_convert_to_lower(char *s)
 144 {
 145         while (*s) {
 146                 *s = _bcs_tolower(*s);
 147                 s++;
 148         }
 149 }
 150
 151 /*
 152  * destructive transliterate to uppercase.
 153  */
 154 void
 155 _citrus_bcs_convert_to_upper(char *s)
 156 {
 157         while (*s) {
 158                 *s = _bcs_toupper(*s);
 159                 s++;
 160         }
 161 }