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edhill |
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/* |
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* String manipulation routines |
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*/ |
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/* (C) Copyright 1993,1994 by Carnegie Mellon University |
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* All Rights Reserved. |
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* |
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* Permission to use, copy, modify, distribute, and sell this software |
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* and its documentation for any purpose is hereby granted without |
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* fee, provided that the above copyright notice appear in all copies |
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* and that both that copyright notice and this permission notice |
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* appear in supporting documentation, and that the name of Carnegie |
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* Mellon University not be used in advertising or publicity |
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* pertaining to distribution of the software without specific, |
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* written prior permission. Carnegie Mellon University makes no |
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* representations about the suitability of this software for any |
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* purpose. It is provided "as is" without express or implied |
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* warranty. |
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* |
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* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO |
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
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* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE |
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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* SOFTWARE. |
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*/ |
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#include <ctype.h> |
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static unsigned char upcase[256] = { |
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
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' ','!','"','#','$','%','&', 39,'(',')','*','+',',','-','.','/', |
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'0','1','2','3','4','5','6','7','8','9',':',';','<','=','>','?', |
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'@','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O', |
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'P','Q','R','S','T','U','V','W','X','Y','Z','[', 92,']','^','_', |
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'`','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O', |
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'P','Q','R','S','T','U','V','W','X','Y','Z','{','|','}','~',127, |
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, |
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, |
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175, |
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191, |
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192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207, |
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208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223, |
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224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239, |
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240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255}; |
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#define UPC(x) (upcase[(unsigned char)(x)]) |
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/* |
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* Same as strcmp, but case-insensitive. |
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*/ |
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int |
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strcasecmp(register char *s1, register char *s2) |
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{ |
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register char c1; |
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while ((c1 = *s1) && UPC(c1) == UPC(*s2)) { |
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s1++; |
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s2++; |
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} |
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return UPC(c1) - UPC(*s2); |
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} |
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/* |
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* Same as strncmp, but case-insensitive. |
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*/ |
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int |
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strncasecmp(register char *s1, register char *s2, int n) |
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{ |
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register char c1; |
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while (n-- && (c1 = *s1) && UPC(c1) == UPC(*s2)) { |
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s1++; |
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s2++; |
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} |
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if (n == -1) return 0; |
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return UPC(c1) - UPC(*s2); |
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} |
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