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 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 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 * 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 * 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 * 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 * 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 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 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 161 _citrus_bcs_convert_to_upper(char *s) 162 { 163 164 while (*s) { 165 *s = _bcs_toupper(*s); 166 s++; 167 } 168 } 169