Валентин Озеров - Советы по Delphi. Версия 1.4.3 от 1.1.2001

procedureSetStrictIntegrity(Value : Boolean);

procedureUpdateCFGFile(path, item, value : string);

protected

public

constructorCreate(AOwner: TComponent); override;

destructorDestroy; override;

published

propertyLocalShare : Boolean readFLocalShare writeSetLocalShare;

propertyMinBufSize : Integer readFMinBufSize writeSetMinBufSize;

propertyMaxBufSize : Integer readFMaxBufSize writeSetMaxBufSize;

propertySystemLangDriver : String readFSystemLangDriver writeSetSystemLangDriver;

propertyParadoxLangDriver : String readFParadoxLangDriver writeSetParadoxLangDriver;

propertyMaxFileHandles : Integer readFMaxFileHandles writeSetMaxFileHandles;

propertyNetFileDir : String readFNetFileDir writeSetNetFileDir;

propertyTableLevel : String readFTableLevel writeSetTableLevel;

propertyBlockSize : Integer readFBlockSize writeSetBlockSize;

propertyDefaultDriver : string readFDefaultDriver writeSetDefaultDriver;

propertyAutoODBC : Boolean readFAutoODBC writeSetAutoODBC;

propertyStrictIntegrity : Boolean readFStrictIntegrity writeSetStrictIntegrity;

end;

procedure Register;

implementation

functionStrToBoolean(Value : string) : Boolean;

begin

if(UpperCase(Value) = 'TRUE') or(UpperCase(Value) = 'ON') or(UpperCase(Value) = 'YES') or(UpperCase(Value) = '.T.' ) thenResult := True

elseResult := False;

end;

functionBooleanToStr(Value : Boolean) : String;

begin

ifValue thenResult := 'TRUE'

elseResult := 'FALSE';

end;

procedure Register;

begin

RegisterComponents('Data Access', [TBDEConfig]);

end;

procedureTBDEConfig.Init;

var

h: hDBICur;

pCfgDes: pCFGDesc;

n, v : string;

begin

Check(DbiOpenCfgInfoList( nil, dbiREADWRITE, cfgPersistent,'\SYSTEM\INIT', h));

GetMem(pCfgDes, sizeof(CFGDesc));

try

FillChar(pCfgDes^, sizeof(CFGDesc), #0);

while(DbiGetNextRecord(h, dbiWRITELOCK, pCfgDes, nil) = DBIERR_NONE) do begin

n := StrPas(pCfgDes^.szNodeName);

v := StrPas(pCfgDes^.szValue);

ifn = 'LOCAL SHARE' thenFLocalShare := StrToBoolean(v)

else ifn = 'MINBUFSIZE' thenFMinBufSize := StrToInt(v)

else ifn = 'MAXBUFSIZE' thenFMaxBufSize := StrToInt(v)

else ifn = 'MAXFILEHANDLES' thenFMaxFileHandles := StrToInt(v)

else ifn = 'LANGDRIVER' thenFSystemLangDriver := v

else ifn = 'AUTO ODBC' thenFAutoODBC := StrToBoolean(v)

else ifn = 'DEFAULT DRIVER' thenFDefaultDriver := v;

end;

if(h <> nil) thenDbiCloseCursor(h);

Check(DbiOpenCfgInfoList( nil, dbiREADWRITE, cfgPersistent,'\DRIVERS\PARADOX\INIT', h));

FillChar(pCfgDes^, sizeof(CFGDesc), #0);

while(DbiGetNextRecord(h, dbiWRITELOCK, pCfgDes, nil) = DBIERR_NONE) do begin

n := StrPas(pCfgDes^.szNodeName);

v := StrPas(pCfgDes^.szValue);

ifn = 'NET DIR' thenFNetFileDir := v

else ifn = 'LANGDRIVER' thenFParadoxLangDriver := v;

end;

if(h <> nil) thenDbiCloseCursor(h);

Check(DbiOpenCfgInfoList( nil, dbiREADWRITE, cfgPersistent, '\DRIVERS\PARADOX\TABLE CREATE', h));

FillChar(pCfgDes^, sizeof(CFGDesc), #0);

while(DbiGetNextRecord(h, dbiWRITELOCK, pCfgDes, nil) = DBIERR_NONE) do begin

n := StrPas(pCfgDes^.szNodeName);

v := StrPas(pCfgDes^.szValue);

ifn = 'LEVEL' thenFTableLevel := v

else ifn = 'BLOCK SIZE' thenFBlockSize := StrToInt(v)

else ifn = 'STRICTINTEGRITY' thenFStrictIntegrity := StrToBoolean(v);

end;

finally

FreeMem(pCfgDes, sizeof(CFGDesc));

if(h <> nil) thenDbiCloseCursor(h);

end;

end;

procedureTBDEConfig.SetLocalShare(Value : Boolean);

begin

UpdateCfgFile('\SYSTEM\INIT', 'LOCAL SHARE', BooleanToStr(Value));

FLocalShare := Value;

end;

procedureTBDEConfig.SetMinBufSize(Value : Integer);

begin

UpdateCfgFile('\SYSTEM\INIT', 'MINBUFSIZE', IntToStr(Value));

FMinBufSize := Value;

end;

procedureTBDEConfig.SetMaxBufSize(Value : Integer);

begin

UpdateCfgFile('\SYSTEM\INIT', 'MAXBUFSIZE', IntToStr(Value));

FMaxBufSize := Value;

end;

procedureTBDEConfig.SetSystemLangDriver(Value : String);

begin

UpdateCfgFile('\SYSTEM\INIT', 'LANGDRIVER', Value);

FSystemLangDriver := Value;

end;

procedureTBDEConfig.SetParadoxLangDriver(Value : String);

begin

UpdateCfgFile('\DRIVERS\PARADOX\INIT', 'LANGDRIVER', Value);

FParadoxLangDriver := Value;

end;

procedureTBDEConfig.SetMaxFileHandles(Value : Integer);

begin

UpdateCfgFile('\SYSTEM\INIT', 'MAXFILEHANDLES', IntToStr(Value));

FMaxFileHandles := Value;

end;

procedureTBDEConfig.SetNetFileDir(Value : String);

begin

UpdateCfgFile('\DRIVERS\PARADOX\INIT', 'NET DIR', Value);

FNetFileDir := Value;

end;

procedureTBDEConfig.SetTableLevel(Value : String);

begin

UpdateCfgFile('\DRIVERS\PARADOX\TABLE CREATE', 'LEVEL', Value);

FTableLevel := Value;

end;

procedureTBDEConfig.SetBlockSize(Value : Integer);

begin

UpdateCfgFile('\DRIVERS\PARADOX\TABLE CREATE', 'BLOCK SIZE', IntToStr(Value));

FBlockSize := Value;

end;

procedureTBDEConfig.SetStrictIntegrity(Value : Boolean);

begin

UpdateCfgFile('\DRIVERS\PARADOX\TABLE CREATE', 'STRICTINTEGRITY', BooleanToStr(Value));

FStrictIntegrity := Value;

end;

procedureTBDEConfig.SetDefaultDriver(Value : String);

begin

UpdateCfgFile('\SYSTEM\INIT', 'DEFAULT DRIVER', Value);

FDefaultDriver := Value;

end;

procedureTBDEConfig.SetAutoODBC(Value : Boolean);

begin

UpdateCfgFile('\SYSTEM\INIT', 'AUTO ODBC', BooleanToStr(Value));

FAutoODBC := Value;

end;

procedureTBDEConfig.UpdateCFGFile;

var

h : hDbiCur;

pCfgDes: pCFGDesc;

pPath : array[0..127] ofchar;

begin

StrPCopy(pPath,Path);

Check(DbiOpenCfgInfoList( nil, dbiREADWRITE, cfgPersistent, pPath, h));

GetMem(pCfgDes, sizeof(CFGDesc));

try

FillChar(pCfgDes^, sizeof(CFGDesc), #0);

while(DbiGetNextRecord(h, dbiWRITELOCK, pCfgDes, nil) = DBIERR_NONE) do begin

ifStrPas(pCfgDes^.szNodeName) = item then begin

StrPCopy(pCfgDes^.szValue, value);

Check(DbiModifyRecord(h, pCfgDes, True));

end;

end;

finally

FreeMem(pCfgDes, sizeof(CFGDesc));

if(h <> nil) thenDbiCloseCursor(h);

end;

end;

constructorTBDEConfig.Create(AOwner: TComponent);