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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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/*
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* hfsutils - tools for reading and writing Macintosh HFS volumes
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* Copyright (C) 1996-1998 Robert Leslie
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: strstr.c,v 1.5 1998/04/11 08:27:00 rob Exp $
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*/
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# ifdef HAVE_CONFIG_H
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# include "config.h"
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# endif
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/*
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* NAME: strstr()
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* DESCRIPTION: locate a substring
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*/
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char *strstr(const char *haystack, const char *needle)
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{
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register const char *hptr, *nptr;
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if (*needle == 0)
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return haystack;
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while (*haystack)
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{
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if (*haystack++ != *needle)
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continue;
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hptr = haystack;
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nptr = needle + 1;
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while (1)
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{
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if (*nptr == 0)
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return haystack - 1;
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if (*hptr++ != *nptr++)
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break;
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}
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}
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return 0;
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}
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