75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 1997, Microsoft Corporation. All Rights Reserved.
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//
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// Global fuction for writing to file
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//#include "stdafx.h"
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#include "pch.cxx"
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#include "ReadSilsaDict.h"
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static CDoubleFileBSDict *LenDicts[MAX_LENGTH_DICT];
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// points to block in the dictionary file.
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static _DictHeader dictHeader;
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static HANDLE hDict;
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static DWORD fpLengthDicBlock[MAX_LENGTH_DICT];
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/////////////////////////////////////////////////////////////////////////////
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// Open and Read Silsa dictionary index
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// offset : offset from start of MainDict to Sialsa Dict.
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// for one lex dict.
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BOOL OpenSilsaDict(HANDLE _hDict, DWORD offset)
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{
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DWORD readBytes;
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hDict = _hDict;
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// hDict = CreateFile(lpFileName, GENERIC_READ, FILE_SHARE_READ, 0,
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// OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, 0);
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//ReadFile(hDict, &stamp, strlen(dictHeader.COPYRIGHT_HEADER), &readBytes, 0);
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//stamp[strlen(COPYRIGHT_HEADER)] = 0;
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//if (strcmp(COPYRIGHT_HEADER, stamp)!=0) return FALSE;
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SetFilePointer(hDict, offset, 0, FILE_BEGIN);
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ReadFile(hDict, &dictHeader, sizeof(_DictHeader), &readBytes, 0);
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//if (strcmp(COPYRIGHT_STR, dictHeader.COPYRIGHT_HEADER)!=0) return FALSE;
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SetFilePointer(hDict, offset+SILSA_DICT_HEADER_SIZE, 0, FILE_BEGIN);
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LenDicts[0] = new CDoubleFileBSDict();
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LenDicts[0]->LoadIndex(hDict);
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fpLengthDicBlock[0] = offset + dictHeader.iBlock;
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for (int i=1; i<dictHeader.numOfLenDict; i++) {
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LenDicts[i] = new CDoubleFileBSDict();
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LenDicts[i]->LoadIndex(hDict);
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fpLengthDicBlock[i] = fpLengthDicBlock[i-1] + LenDicts[i-1]->GetBlockSize() *
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LenDicts[i-1]->GetNumOfBlocks();
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}
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return TRUE;
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}
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void CloseSilsaDict()
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{
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if (hDict) {
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//CloseHandle(hDict);
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for (int i=0; i<dictHeader.numOfLenDict; i++) {
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delete LenDicts[i];
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LenDicts[i] = 0;
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}
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}
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hDict = 0;
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}
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/////////////////////////////////////////////////////////////////////////////
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// Find word from silsa dict.
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int FindSilsaWord(LPCTSTR lpWord)
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{
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#ifdef _MBCS
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int wordLen = strlen(lpWord)>>1;
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#elif _UNICODE
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int wordLen = lstrlen(lpWord);
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#endif
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if (wordLen>MAX_LENGTH_DICT || wordLen <= 0) return 0;
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return LenDicts[wordLen-1]->FindWord(hDict, fpLengthDicBlock[wordLen-1], lpWord);
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}
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