62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
/*
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* $Source$
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* $Revision$
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* $Date$
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*
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* Copyright (C) 1996 by CyberSolutions GmbH.
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* All rights reserved.
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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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