100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 1997, Microsoft Corporation. All Rights Reserved.
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//
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/////////////////////////////////////////////////////////////////////////////
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//#include "stdafx.h"
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#include "pch.cxx"
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#include "FSADict.h"
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//#include "TransTable.h"
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#include "ReadHeosaDict.h"
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CFSADict::CFSADict(HANDLE fHandle, UINT sparseMatSize, UINT actSize)
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{
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DWORD NumOfBytesRead;
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lpBuffer = (LPSTR)GlobalAlloc(GPTR, sparseMatSize);
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Assert(lpBuffer != NULL );
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ReadFile(fHandle, lpBuffer, sparseMatSize, &NumOfBytesRead, 0);
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// _ASSERT(sparseMatSize == NumOfBytesRead);
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if (actSize) {
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lpActBuffer = (LPSTR)GlobalAlloc(GPTR, actSize);
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Assert(lpActBuffer != NULL);
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ReadFile(fHandle, lpActBuffer, actSize, &NumOfBytesRead, 0);
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// _ASSERT(actSize == NumOfBytesRead);
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} else lpActBuffer = 0;
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}
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CFSADict::~CFSADict()
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{
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GlobalFree(lpBuffer);
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if (lpActBuffer)
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GlobalFree(lpActBuffer);
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}
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WORD CFSADict::Find(LPCSTR lpWord, BYTE *actCode)
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{
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WORD base, delta;
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WORD hashVal=0;
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WORD ret;
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//BYTE c;
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base = delta = 0;
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//delta = ((WORD)(*lpWord) -'A') * 3;
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//base = *(WORD *)(lpBuffer + base + delta+1);
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//lpWord++;
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while(*lpWord) {
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if ((BYTE)*(lpBuffer + base + MAX_CHARS*5) == FINAL) return NOT_FOUND;
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// if not start state.(input token 0 not used)
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//if (base)
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delta = ((WORD)(*lpWord)) * 5;
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if ( (*(lpBuffer + base + delta)) != (int) (*lpWord) )
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return NOT_FOUND;
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hashVal += *(WORD*)(lpBuffer + base + delta + 3);
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base = *(WORD *)(lpBuffer + base + delta + 1);
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if (base==0) return NOT_FOUND;
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lpWord++;
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}
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//c = (BYTE)*(lpBuffer + base + MAX_CHARS*3);
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ret = *(WORD*)(lpBuffer + base + MAX_CHARS*5);
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if (ret & FINAL)
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*actCode = *(lpActBuffer + hashVal);
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return ret;
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}
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WORD CFSAIrrDict::Find(LPCSTR lpWord)
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{
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WORD base, delta;
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//WORD ret;
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//BYTE c;
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base = delta = 0;
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//delta = ((WORD)(*lpWord) -'A') * 3;
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//base = *(WORD *)(lpBuffer + base + delta+1);
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//lpWord++;
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while(*lpWord) {
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if ((BYTE)*(lpBuffer + base + MAX_CHARS*3)==FINAL) return NOT_FOUND;
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// if not start state.(input token 0 not used)
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delta = ((WORD)(*lpWord)) * 3;
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if ( (*(lpBuffer + base + delta)) != (int) (*lpWord) )
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return NOT_FOUND;
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base = *(WORD *)(lpBuffer + base + delta + 1);
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if (base==0) return NOT_FOUND;
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lpWord++;
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}
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//c = (BYTE)*(lpBuffer + base + MAX_CHARS*3);
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return *(WORD *)(lpBuffer + base + MAX_CHARS*3);
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}
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