1 /* 2 * Copyright 1990 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1987 Regents of the University of California. 8 * All rights reserved. The Berkeley software License Agreement 9 * specifies the terms and conditions for redistribution. 10 */ 11 12 #pragma ident "%Z%%M% %I% %E% SMI" 13 14 /* 15 * This array is designed for mapping upper and lower case letter 16 * together for a case independent comparison. The mappings are 17 * based upon ascii character sequences. 18 */ 19 static char charmap[] = { 20 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', 21 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', 22 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', 23 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', 24 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', 25 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', 26 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', 27 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', 28 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 29 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 30 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 31 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', 32 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 33 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 34 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 35 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', 36 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', 37 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', 38 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', 39 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', 40 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', 41 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', 42 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', 43 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', 44 '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347', 45 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', 46 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', 47 '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337', 48 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', 49 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', 50 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', 51 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', 52 }; 53 54 int 55 strcasecmp(char *s1, char *s2) 56 { 57 char *cm = charmap; 58 59 while (cm[*s1] == cm[*s2++]) 60 if (*s1++ == '\0') 61 return (0); 62 return(cm[*s1] - cm[*--s2]); 63 } 64 65 int 66 strncasecmp(char *s1, char *s2, int n) 67 { 68 char *cm = charmap; 69 70 while (--n >= 0 && cm[*s1] == cm[*s2++]) 71 if (*s1++ == '\0') 72 return (0); 73 return(n < 0 ? 0 : cm[*s1] - cm[*--s2]); 74 } 75 76 /* 77 * For 4.0 compatibility 78 */ 79 int 80 stricmp(char *s1, char *s2) 81 { 82 return (strcasecmp(s1, s2)); 83 } 84 85 int 86 strnicmp(char *s1, char *s2, int n) 87 { 88 return (strncasecmp(s1, s2, n)); 89 } 90