173 lines
5.6 KiB
C
173 lines
5.6 KiB
C
/************************************************************************
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*
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* WWHEEL.H
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*
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* Copyright (c) Microsoft Corporation 1993
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* All rights reserved.
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*
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*************************************************************************
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*
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* The WordWheel API
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*
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*
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************************************************************************/
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#ifndef __WWHEEL_H_
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#define __WWHEEL_H_
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#include <mvopsys.h>
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//#include <itww.h>
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#include <itgroup.h>
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#include "common.h"
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#include <wrapstor.h>
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#include <orkin.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*****************************************************************************
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*
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* error handling defines
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*
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* many routines are structured to have a single exit point labelled
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* "cleanup". The following defines are a procedure-level "break"
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* that force execution to drop down to cleanup.
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*
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*****************************************************************************/
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#ifdef _DEBUG
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#define warning_abort { DPF("\nwarning, %s, line %u\n", \
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(LPSTR)s_aszModule, __LINE__); goto cleanup; }
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#else
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#define warning_abort { goto cleanup; }
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#endif
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#define assert_abort { assert(FALSE); goto cleanup; }
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// Typedefs
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//
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typedef HANDLE HWHEEL;
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// Critical structures that gets messed up in /Zp8
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#pragma pack(1)
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typedef struct tagWHEELINFO
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{
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DWORD magic; // magic value for verification
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HBT hbt; // handle to btree subfile
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HMAPBT hmapbt; // handle to map subfile
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long lNumKws; // number of keywords in the word wheel.
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LPIDX lpIndex; // index for searching.
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HF hf; // handle to keyword index subfile
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LPBYTE pOccHdr; // Header for occurrence properties
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LPBYTE pKeyHdr; // Header for key properties
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} WHEELINFO, FAR * PWHEELINFO;
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typedef struct
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{
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DWORD magic; // magic value for verification
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HANDLE hMergeData; // Handle to merge data info if using multiple titles
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DWORD dwMergeLength; // Length in bytes of merge data for this wheel combo
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LONG lNumEntries; // Total number of 'virtual' (could be filtered) entries (same as lNumKws if one title)
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LPSTR lpszCacheData; // Key for cached data following
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HANDLE hCacheData; // Results of last KeyIndexGet call
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DWORD dwCacheNumItems; // Cached number of items from last KeyIndexGet call
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DWORD wNumWheels; // Number of titles for merging
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WHEELINFO pInfo[1]; // Info for each particular title
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IITGroup* pIITGroup; // Group for filtering
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LONG lNumRealEntries; // Real number of entries (without filtering).
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LPSIPB lpsipb; // Stop word structure for full-text search
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} WHEEL, FAR *PWHEEL;
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typedef struct
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{
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WORD nTopics;
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DWORD dwOffset;
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} QREC;
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// Critical structures that gets messed up in /Zp8
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#pragma pack()
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// Defines
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//
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// This must be at least as big as CBMAX_WWTITLE defined in ciextern.h
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#define MAXWHEELNAME 80
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// magic is "WW!\0"
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#define WHEEL_MAGIC 0x00215757
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#define WHEEL_INFO_MAGIC 0x00215758
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#define PWHEEL_OK(p) ((p)!=NULL&&(p)->magic==WHEEL_MAGIC)
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#define MERGEFILE_HEADERSIZE 1024
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#define MERGEFILE_HEADERALIGN 32
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#define MERGEFILE_FILEALIGN 8
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#define MERGEFILE_ENTRYSIZE 32
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typedef struct mergefile_tag
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{
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HFPB hfpb;
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WORD wNumRecords;
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LONG lctFile;
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LONG lHeaderBlockStart;
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char szHeader[MERGEFILE_HEADERSIZE];
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} MERGEFILE, FAR * LPMERGEFILE;
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#if 0
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#define MERGEFILE_WW_TRE_EXT ".WWT"
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#define MERGEFILE_WW_DAT_EXT ".WWD"
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#define MERGEFILE_WW_IDX_EXT ".WWI"
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#define MERGEFILE_WW_MAP_EXT ".WWM"
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#define MERGEFILE_WW_STP_EXT ".WWS"
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#define MERGEFILE_KW_TRE_EXT ".KWT"
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#define MERGEFILE_KW_DAT_EXT ".KWD"
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#define MERGEFILE_KW_IDX_EXT ".KWI"
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#define MERGEFILE_KW_MAP_EXT ".KWM"
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#define MERGEFILE_KW_STP_EXT ".STP"
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#define WW_BTREE_FILENAME L"BTREE.WW3"
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#define WW_DATA_FILENAME L"DATA.WW3"
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#define WW_MAP_FILENAME L"MAP.WW3"
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#define WW_PROP_FILENAME L"PROPERTY.WW3"
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#define WW_INDEX_FILENAME L"FTI.WW3"
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#define WW_STOP_FILENAME L"FTISTOP.WW3"
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#endif
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// Prototypes
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//ERR FAR PASCAL EXPORT_API WordWheelQuery(HANDLE hWheel, DWORD dwFlags,LPCSTR lpstrQuery,LPVOID lpGroupLimit,LPVOID lpGroupHits);
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HWHEEL FAR PASCAL EXPORT_API WordWheelOpen(IITDatabase* lpITDB,
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IStorage* pWWStorage, HRESULT* phr);
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void FAR PASCAL EXPORT_API WordWheelClose(HWHEEL hWheel);
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long FAR PASCAL EXPORT_API WordWheelLength(HWHEEL hWheel, HRESULT* phr);
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long FAR PASCAL EXPORT_API WordWheelPrefix(HWHEEL hWheel,LPCVOID lpcvPrefix, BOOL fExactMatch, HRESULT* phr);
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HRESULT FAR PASCAL EXPORT_API WordWheelLookup(HWHEEL hWheel, long lIndex, LPVOID lpvKeyBuf, DWORD cbKeyBuf);
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//ERR FAR PASCAL EXPORT_API KeyIndexGetAddrs (HWHEEL hWheel, LPBYTE lpKey, int nStart, int nCount, LPBYTE lpAddrs);
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//DWORD FAR PASCAL EXPORT_API KeyIndexGetData (HWHEEL hWheel, LPBYTE lpKey, int nWhich, LPBYTE lpMem, DWORD dwMaxLen, LPERRB lperrb);
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//WORD FAR PASCAL EXPORT_API KeyIndexGetCount (HWHEEL,LPBYTE, LPERRB);
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//ERR FAR PASCAL EXPORT_API WordWheelSetKeyFilter(HWHEEL, LPVOID);
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//LPVOID FAR PASCAL EXPORT_API WordWheelGetKeyFilter(HWHEEL, LPERRB);
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//ERR FAR PASCAL EXPORT_API WordWheelGetInfo (HWHEEL, PWWINFO);
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HRESULT FAR PASCAL CheckWordWheelKeyType(HBT hbt, IITSortKey **ppITSortKey);
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DWORD FAR PASCAL CbKeyWordWheel(LPVOID lpvKey, IITSortKey *pITSortKey);
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#ifdef __cplusplus
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}
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#endif
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#endif // __WWHEEL_H_
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