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1 line
12 KiB
C
1 line
12 KiB
C
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/* Copyright (c) 2017, Computer History Museum
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted (subject to
the limitations in the disclaimer below) provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Computer History Museum nor the names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE. */
#include "search.h"
/* Copyright (c) 1995 by QUALCOMM Incorporated */
#define FILE_NUM 77
#pragma segment Search
long SearchPtrPtrSensitive(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen, Boolean words, AccuPtr cache);
long SearchPtrPtrInsensitive(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen, Boolean words, AccuPtr cache);
long ExactSearchPtrPtr(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen);
long SearchFromCache(AccuPtr cache, long offset, long inLen);
long BruteSearchPtrPtr(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen);
long RKSearchPtrPtr(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen);
/**********************************************************************
* SearchPtrHandle - look for a pointer in a handle
**********************************************************************/
long SearchPtrHandle(UPtr lookPtr, short lookLen, UHandle textHandle, long offset, Boolean sensitive, Boolean words, AccuPtr cache)
{
long result = SearchPtrPtr(lookPtr,lookLen,LDRef(textHandle),offset,GetHandleSize(textHandle),sensitive,words,cache);
UL(textHandle);
return(result);
}
/**********************************************************************
* SearchPtrPtr - look for a pointer in another pointer
**********************************************************************/
long SearchPtrPtr(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen, Boolean sensitive, Boolean words, AccuPtr cache)
{
/*
* are we looking in the cache?
*/
if (cache && cache->data)
return(SearchFromCache(cache,offset,inLen));
/*
* no pre-loaded cache
*/
if (sensitive) return(SearchPtrPtrSensitive(lookPtr,lookLen,textPtr,offset,inLen,words,cache));
else return(SearchPtrPtrInsensitive(lookPtr,lookLen,textPtr,offset,inLen,words,cache));
}
/**********************************************************************
* SearchPtrPtrSensitive - case-sensitive search
**********************************************************************/
long SearchPtrPtrSensitive(UPtr lookPtr, short lookLen, UPtr textPtr, long offset, long inLen, Boolean words, AccuPtr cache)
{
long found;
while (0 <= (found=ExactSearchPtrPtr(lookPtr,lookLen,textPtr,offset,inLen)))
{
if (!words) break;
if (!found || !IsWordChar[textPtr[found-1]])
if (found+lookLen==inLen || !IsWordChar[textPtr[found+lookLen]])
break
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