38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/*
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* Copyright (c) 2011, 2012, 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* string/strcasecmp.c
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* Compares two strings ignoring case.
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*/
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#include <ctype.h>
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#include <stdbool.h>
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#include <string.h>
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int strcasecmp(const char* a, const char* b)
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{
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for ( size_t i = 0; true; i++ )
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{
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unsigned char ac = (unsigned char) tolower((unsigned char) a[i]);
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unsigned char bc = (unsigned char) tolower((unsigned char) b[i]);
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if ( ac == '\0' && bc == '\0' )
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return 0;
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if ( ac < bc )
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return -1;
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if ( ac > bc )
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return 1;
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}
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}
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