77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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$Source$
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$Revision$
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Copyright (C) 2000 by CyberSolutions GmbH, Germany.
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This file is part of OpenPetidomo.
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OpenPetidomo 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, or (at your option)
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any later version.
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OpenPetidomo is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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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 OpenPetidomo; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "text.h"
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/* A simple text search.
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This function performs a simple, case-independent text search in
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the indicated buffer.
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RETURNS: FindString() returns a pointer to the first occurance of
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"string" in "buffer", or NULL, if the string was not found.
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NOTE: This routine will perform poorly on larger text buffers.
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AUTHOR: Peter Simons <simons@rhein.de>
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*/
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char *
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text_find_string(char * buffer, /* text buffer */
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char * string /* string to find */
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)
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{
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int buffer_len;
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int string_len;
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char * result;
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/* Sanity checks. */
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assert(buffer != NULL);
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assert(string != NULL);
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if (!buffer || !string)
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return NULL;
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buffer_len = strlen(buffer);
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string_len = strlen(string);
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if (buffer_len == 0 || buffer_len < string_len)
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return NULL;
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if (string_len == 0)
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return buffer;
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/* Now look for the string. */
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for(result = NULL; buffer_len >= string_len; buffer++, buffer_len--) {
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if (!strncasecmp(buffer, string, string_len)) {
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result = buffer;
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break;
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}
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}
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return result;
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}
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