131 lines
3.9 KiB
C
131 lines
3.9 KiB
C
|
//============== DAE: OS/2 Database Access Engine ===================
|
||
|
|
//============== recint.h: Record Manager Internals ===================
|
||
|
|
|
||
|
|
#define cbLVIntrinsicMost 1024
|
||
|
|
#define cbRECRecordMost cbNodeMost - cbNullKeyData - JET_cbKeyMost
|
||
|
|
// 4044 - 8 - 255 = 3781
|
||
|
|
|
||
|
|
#define fidFixedLeast 1
|
||
|
|
#define fidVarLeast 128
|
||
|
|
#define fidTaggedLeast 256
|
||
|
|
#define fidTaggedMost (0x7fff)
|
||
|
|
#define fidFixedMost (fidVarLeast-1)
|
||
|
|
#define fidVarMost (fidTaggedLeast-1)
|
||
|
|
|
||
|
|
#define FFixedFid(fid) ((fid)<=fidFixedMost && (fid)>=fidFixedLeast)
|
||
|
|
#define FVarFid(fid) ((fid)<=fidVarMost && (fid)>=fidVarLeast)
|
||
|
|
#define FTaggedFid(fid) ((fid)<=fidTaggedMost && (fid)>=fidTaggedLeast)
|
||
|
|
|
||
|
|
// Used to get offset from 2-byte VarOffset which includes null-bit
|
||
|
|
#define ibVarOffset(ibVarOffs) ( (ibVarOffs) & 0x0fff)
|
||
|
|
#define FVarNullBit(ibVarOffs) ( (ibVarOffs) & 0x8000)
|
||
|
|
#define SetNullBit(ibVarOffs) ( (ibVarOffs) |= 0x8000)
|
||
|
|
#define ResetNullBit(ibVarOffs) ( (ibVarOffs) &= 0x7fff)
|
||
|
|
|
||
|
|
// Used to flip highest bit of signed fields when transforming.
|
||
|
|
#define maskByteHighBit (1 << (sizeof(BYTE)*8-1))
|
||
|
|
#define maskWordHighBit (1 << (sizeof(WORD)*8-1))
|
||
|
|
#define maskDWordHighBit (1L << (sizeof(ULONG)*8-1))
|
||
|
|
#define bFlipHighBit(b) ((BYTE)((b) ^ maskByteHighBit))
|
||
|
|
#define wFlipHighBit(w) ((WORD)((w) ^ maskWordHighBit))
|
||
|
|
#define ulFlipHighBit(ul) ((ULONG)((ul) ^ maskDWordHighBit))
|
||
|
|
|
||
|
|
|
||
|
|
/* The following are disk structures -- so pack 'em
|
||
|
|
/**/
|
||
|
|
#pragma pack(1)
|
||
|
|
|
||
|
|
/* long column id is big-endian long
|
||
|
|
/**/
|
||
|
|
typedef LONG LID;
|
||
|
|
|
||
|
|
/* long value column in record format
|
||
|
|
/**/
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
BYTE fSeparated;
|
||
|
|
union
|
||
|
|
{
|
||
|
|
LID lid;
|
||
|
|
BYTE rgb[];
|
||
|
|
};
|
||
|
|
} LV;
|
||
|
|
|
||
|
|
/* long value root data format
|
||
|
|
/**/
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
ULONG ulReference;
|
||
|
|
ULONG ulSize;
|
||
|
|
} LVROOT;
|
||
|
|
|
||
|
|
#pragma pack()
|
||
|
|
|
||
|
|
#define fIntrinsic (BYTE)0
|
||
|
|
#define fSeparate (BYTE)1
|
||
|
|
#define FFieldIsSLong( pb ) ( ((LV *)(pb))->fSeparated )
|
||
|
|
#define LidOfLV( pb ) ( ((LV *)(pb))->lid )
|
||
|
|
#define FlagIntrinsic( pb ) ( ((LV *)(pb))->fSeparated = fIntrinsic )
|
||
|
|
#define FlagSeparate( pb ) ( ((LV *)(pb))->fSeparated = fSeparate )
|
||
|
|
|
||
|
|
#define fLVReference 0
|
||
|
|
#define fLVDereference 1
|
||
|
|
#define ErrRECResetSLongValue( pfucb, plid ) \
|
||
|
|
ErrRECAffectSeparateLV( pfucb, plid, fLVDereference )
|
||
|
|
#define ErrRECReferenceLongValue( pfucb, plid ) \
|
||
|
|
ErrRECAffectSeparateLV( pfucb, plid, fLVReference )
|
||
|
|
#define ErrRECDereferenceLongValue( pfucb, plid ) \
|
||
|
|
ErrRECAffectSeparateLV( pfucb, plid, fLVDereference )
|
||
|
|
|
||
|
|
/* The following are disk structures -- so pack 'em
|
||
|
|
/**/
|
||
|
|
#pragma pack(1)
|
||
|
|
|
||
|
|
// Record header (beginning of every data record)
|
||
|
|
typedef struct _rechdr
|
||
|
|
{
|
||
|
|
BYTE fidFixedLastInRec; // highest fixed fid represented in record
|
||
|
|
BYTE fidVarLastInRec; // highest var fid represented in record
|
||
|
|
} RECHDR;
|
||
|
|
|
||
|
|
// Structure imposed upon a tagged field occurance in a record
|
||
|
|
typedef struct _tagfld
|
||
|
|
{
|
||
|
|
FID fid; // field id of occurance
|
||
|
|
WORD cb; // length of following data
|
||
|
|
BYTE rgb[]; // data (extends off the end of the structure)
|
||
|
|
} TAGFLD;
|
||
|
|
|
||
|
|
#pragma pack()
|
||
|
|
|
||
|
|
ULONG UlChecksum( BYTE *pb, ULONG cb );
|
||
|
|
ERR ErrRECChangeIndex( FUCB *pfucb, CHAR *szIndex );
|
||
|
|
BOOL FRECIIllegalNulls( FDB *pfdb, LINE *plineRec );
|
||
|
|
ERR ErrRECIRetrieve( FUCB *pfucb, FID *pfid, ULONG itagSequence, LINE *plineField, ULONG grbit );
|
||
|
|
BOOL FOnCopyBuffer( FUCB *pfucb );
|
||
|
|
ERR ErrRECIModifyField( FUCB *pfucb, FID fid, ULONG itagSequence, LINE *plineField );
|
||
|
|
|
||
|
|
ERR ErrRECSetLongField(
|
||
|
|
FUCB *pfucb,
|
||
|
|
FID fid,
|
||
|
|
ULONG itagSequence,
|
||
|
|
LINE *plineField,
|
||
|
|
JET_GRBIT grbit,
|
||
|
|
LONG ibOffset,
|
||
|
|
ULONG ulMax );
|
||
|
|
ERR ErrRECRetrieveSLongField(
|
||
|
|
FUCB *pfucb,
|
||
|
|
LID lid,
|
||
|
|
ULONG ibGraphic,
|
||
|
|
BYTE *pb,
|
||
|
|
ULONG cbMax,
|
||
|
|
ULONG *pcbActual );
|
||
|
|
ERR ErrRECDeleteLongFields( FUCB *pfucb, LINE *plineRecord );
|
||
|
|
ERR ErrRECAffectLongFields( FUCB *pfucb, LINE *plineRecord, INT fAll );
|
||
|
|
|
||
|
|
#define fSeparateAll (INT)0
|
||
|
|
#define fReference (INT)1
|
||
|
|
#define fDereference (INT)2
|
||
|
|
#define fDereferenceRemoved (INT)3
|
||
|
|
#define fDereferenceAdded (INT)4
|