84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/* strcasecmp.c - functions for case-insensitive string comparison. */
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/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#if !defined (HAVE_STRCASECMP)
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#include <stdc.h>
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#include <bashansi.h>
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#include <chartypes.h>
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/* Compare at most COUNT characters from string1 to string2. Case
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doesn't matter. */
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int
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strncasecmp (string1, string2, count)
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const char *string1;
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const char *string2;
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int count;
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{
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register const char *s1;
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register const char *s2;
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register int r;
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if (count <= 0 || (string1 == string2))
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return 0;
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s1 = string1;
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s2 = string2;
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do
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{
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if ((r = TOLOWER ((unsigned char) *s1) - TOLOWER ((unsigned char) *s2)) != 0)
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return r;
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if (*s1++ == '\0')
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break;
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s2++;
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}
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while (--count != 0);
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return (0);
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}
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/* strcmp (), but caseless. */
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int
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strcasecmp (string1, string2)
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const char *string1;
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const char *string2;
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{
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register const char *s1;
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register const char *s2;
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register int r;
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s1 = string1;
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s2 = string2;
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if (s1 == s2)
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return (0);
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while ((r = TOLOWER ((unsigned char)*s1) - TOLOWER ((unsigned char)*s2)) == 0)
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{
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if (*s1++ == '\0')
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return 0;
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s2++;
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}
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return (r);
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}
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#endif /* !HAVE_STRCASECMP */
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