1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
3*0Sstevel@tonic-gate  * All rights reserved.
4*0Sstevel@tonic-gate  */
5*0Sstevel@tonic-gate 
6*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
7*0Sstevel@tonic-gate static const char sccsid[] = "@(#)strcasecmp.c	8.1 (Berkeley) 6/4/93";
8*0Sstevel@tonic-gate static const char rcsid[] = "$Id: strcasecmp.c,v 8.5 1999/10/13 16:39:21 vixie Exp $";
9*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
10*0Sstevel@tonic-gate 
11*0Sstevel@tonic-gate /*
12*0Sstevel@tonic-gate  * Copyright (c) 1987, 1993
13*0Sstevel@tonic-gate  *    The Regents of the University of California.  All rights reserved.
14*0Sstevel@tonic-gate  *
15*0Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
16*0Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
17*0Sstevel@tonic-gate  * are met:
18*0Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
19*0Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
20*0Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
21*0Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
22*0Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
23*0Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
24*0Sstevel@tonic-gate  *    must display the following acknowledgement:
25*0Sstevel@tonic-gate  * 	This product includes software developed by the University of
26*0Sstevel@tonic-gate  * 	California, Berkeley and its contributors.
27*0Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
28*0Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
29*0Sstevel@tonic-gate  *    without specific prior written permission.
30*0Sstevel@tonic-gate  *
31*0Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
32*0Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33*0Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34*0Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
35*0Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36*0Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37*0Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38*0Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39*0Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40*0Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41*0Sstevel@tonic-gate  * SUCH DAMAGE.
42*0Sstevel@tonic-gate  */
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate 
45*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate #include "port_before.h"
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate #include <sys/param.h>
50*0Sstevel@tonic-gate #include <sys/types.h>
51*0Sstevel@tonic-gate #include <sys/cdefs.h>
52*0Sstevel@tonic-gate 
53*0Sstevel@tonic-gate #include <string.h>
54*0Sstevel@tonic-gate 
55*0Sstevel@tonic-gate #include "port_after.h"
56*0Sstevel@tonic-gate 
57*0Sstevel@tonic-gate #ifndef NEED_STRCASECMP
58*0Sstevel@tonic-gate int __strcasecmp_unneeded__;
59*0Sstevel@tonic-gate #else
60*0Sstevel@tonic-gate 
61*0Sstevel@tonic-gate /*
62*0Sstevel@tonic-gate  * This array is designed for mapping upper and lower case letter
63*0Sstevel@tonic-gate  * together for a case independent comparison.  The mappings are
64*0Sstevel@tonic-gate  * based upon ascii character sequences.
65*0Sstevel@tonic-gate  */
66*0Sstevel@tonic-gate static const u_char charmap[] = {
67*0Sstevel@tonic-gate 	0000, 0001, 0002, 0003, 0004, 0005, 0006, 0007,
68*0Sstevel@tonic-gate 	0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017,
69*0Sstevel@tonic-gate 	0020, 0021, 0022, 0023, 0024, 0025, 0026, 0027,
70*0Sstevel@tonic-gate 	0030, 0031, 0032, 0033, 0034, 0035, 0036, 0037,
71*0Sstevel@tonic-gate 	0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047,
72*0Sstevel@tonic-gate 	0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057,
73*0Sstevel@tonic-gate 	0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,
74*0Sstevel@tonic-gate 	0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077,
75*0Sstevel@tonic-gate 	0100, 0141, 0142, 0143, 0144, 0145, 0146, 0147,
76*0Sstevel@tonic-gate 	0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157,
77*0Sstevel@tonic-gate 	0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167,
78*0Sstevel@tonic-gate 	0170, 0171, 0172, 0133, 0134, 0135, 0136, 0137,
79*0Sstevel@tonic-gate 	0140, 0141, 0142, 0143, 0144, 0145, 0146, 0147,
80*0Sstevel@tonic-gate 	0150, 0151, 0152, 0153, 0154, 0155, 0156, 0157,
81*0Sstevel@tonic-gate 	0160, 0161, 0162, 0163, 0164, 0165, 0166, 0167,
82*0Sstevel@tonic-gate 	0170, 0171, 0172, 0173, 0174, 0175, 0176, 0177,
83*0Sstevel@tonic-gate 	0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207,
84*0Sstevel@tonic-gate 	0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217,
85*0Sstevel@tonic-gate 	0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227,
86*0Sstevel@tonic-gate 	0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237,
87*0Sstevel@tonic-gate 	0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247,
88*0Sstevel@tonic-gate 	0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257,
89*0Sstevel@tonic-gate 	0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,
90*0Sstevel@tonic-gate 	0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,
91*0Sstevel@tonic-gate 	0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307,
92*0Sstevel@tonic-gate 	0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317,
93*0Sstevel@tonic-gate 	0320, 0321, 0322, 0323, 0324, 0325, 0326, 0327,
94*0Sstevel@tonic-gate 	0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,
95*0Sstevel@tonic-gate 	0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,
96*0Sstevel@tonic-gate 	0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357,
97*0Sstevel@tonic-gate 	0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,
98*0Sstevel@tonic-gate 	0370, 0371, 0372, 0373, 0374, 0375, 0376, 0377
99*0Sstevel@tonic-gate };
100*0Sstevel@tonic-gate 
101*0Sstevel@tonic-gate int
102*0Sstevel@tonic-gate strcasecmp(const char *s1, const char *s2) {
103*0Sstevel@tonic-gate 	const u_char *cm = charmap,
104*0Sstevel@tonic-gate 		     *us1 = (const u_char *)s1,
105*0Sstevel@tonic-gate 		     *us2 = (const u_char *)s2;
106*0Sstevel@tonic-gate 
107*0Sstevel@tonic-gate 	while (cm[*us1] == cm[*us2++])
108*0Sstevel@tonic-gate 		if (*us1++ == '\0')
109*0Sstevel@tonic-gate 			return (0);
110*0Sstevel@tonic-gate 	return (cm[*us1] - cm[*--us2]);
111*0Sstevel@tonic-gate }
112*0Sstevel@tonic-gate 
113*0Sstevel@tonic-gate int
114*0Sstevel@tonic-gate strncasecmp(const char *s1, const char *s2, size_t n) {
115*0Sstevel@tonic-gate 	if (n != 0) {
116*0Sstevel@tonic-gate 		const u_char *cm = charmap,
117*0Sstevel@tonic-gate 			     *us1 = (const u_char *)s1,
118*0Sstevel@tonic-gate 			     *us2 = (const u_char *)s2;
119*0Sstevel@tonic-gate 
120*0Sstevel@tonic-gate 		do {
121*0Sstevel@tonic-gate 			if (cm[*us1] != cm[*us2++])
122*0Sstevel@tonic-gate 				return (cm[*us1] - cm[*--us2]);
123*0Sstevel@tonic-gate 			if (*us1++ == '\0')
124*0Sstevel@tonic-gate 				break;
125*0Sstevel@tonic-gate 		} while (--n != 0);
126*0Sstevel@tonic-gate 	}
127*0Sstevel@tonic-gate 	return (0);
128*0Sstevel@tonic-gate }
129*0Sstevel@tonic-gate 
130*0Sstevel@tonic-gate #endif /*NEED_STRCASECMP*/
131