1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "port_before.h" 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/cdefs.h> 39 40 #include <string.h> 41 42 #include "port_after.h" 43 44 #ifndef NEED_STRCASECMP 45 int __strcasecmp_unneeded__; 46 #else 47 48 /*% 49 * This array is designed for mapping upper and lower case letter 50 * together for a case independent comparison. The mappings are 51 * based upon ascii character sequences. 52 */ 53 static const u_char charmap[] = { 54 0000, 0001, 0002, 0003, 0004, 0005, 0006, 0007, 55 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, 56 0020, 0021, 0022, 0023, 0024, 0025, 0026, 0027, 57 0030, 0031, 0032, 0033, 0034, 0035, 0036, 0037, 58 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, 59 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, 60 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, 61 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, 62 0100, 0141, 0142, 0143, 0144, 0145, 0146, 0147, 63 0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157, 64 0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167, 65 0170, 0171, 0172, 0133, 0134, 0135, 0136, 0137, 66 0140, 0141, 0142, 0143, 0144, 0145, 0146, 0147, 67 0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157, 68 0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167, 69 0170, 0171, 0172, 0173, 0174, 0175, 0176, 0177, 70 0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207, 71 0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217, 72 0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227, 73 0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237, 74 0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247, 75 0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257, 76 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267, 77 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277, 78 0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307, 79 0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317, 80 0320, 0321, 0322, 0323, 0324, 0325, 0326, 0327, 81 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, 82 0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347, 83 0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357, 84 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, 85 0370, 0371, 0372, 0373, 0374, 0375, 0376, 0377 86 }; 87 88 int 89 strcasecmp(const char *s1, const char *s2) { 90 const u_char *cm = charmap, 91 *us1 = (const u_char *)s1, 92 *us2 = (const u_char *)s2; 93 94 while (cm[*us1] == cm[*us2++]) 95 if (*us1++ == '\0') 96 return (0); 97 return (cm[*us1] - cm[*--us2]); 98 } 99 100 int 101 strncasecmp(const char *s1, const char *s2, size_t n) { 102 if (n != 0) { 103 const u_char *cm = charmap, 104 *us1 = (const u_char *)s1, 105 *us2 = (const u_char *)s2; 106 107 do { 108 if (cm[*us1] != cm[*us2++]) 109 return (cm[*us1] - cm[*--us2]); 110 if (*us1++ == '\0') 111 break; 112 } while (--n != 0); 113 } 114 return (0); 115 } 116 117 #endif /*NEED_STRCASECMP*/ 118 119 /*! \file */ 120