62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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/*
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* Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ctype.h>
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#include <string.h>
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#include "collate.h"
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int __collcmp (c1, c2)
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u_char c1, c2;
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{
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static char s1[2], s2[2];
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if (c1 == c2)
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return (0);
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if ( (isascii(c1) && isascii(c2))
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|| (!isalpha(c1) && !isalpha(c2))
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)
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return (((int)c1) - ((int)c2));
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if (isalpha(c1) && !isalpha(c2)) {
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if (isupper(c1))
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return ('A' - ((int)c2));
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else
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return ('a' - ((int)c2));
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} else if (isalpha(c2) && !isalpha(c1)) {
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if (isupper(c2))
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return (((int)c1) - 'A');
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else
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return (((int)c1) - 'a');
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}
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if (isupper(c1) && islower(c2))
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return (-1);
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else if (islower(c1) && isupper(c2))
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return (1);
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s1[0] = (char) c1;
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s2[0] = (char) c2;
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return strcoll(s1, s2);
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}
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