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root/public/ibx/branches/udr/client/FBClientAPI.pas

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ibx/trunk/fbintf/client/FBClientAPI.pas (file contents), Revision 60 by tony, Mon Mar 27 15:21:02 2017 UTC vs.
ibx/branches/journaling/fbintf/client/FBClientAPI.pas (file contents), Revision 363 by tony, Tue Dec 7 13:30:05 2021 UTC

#	Line 76 | Line 76 | uses
76		Classes,
77		{$IFDEF WINDOWS}Windows, {$ENDIF}
78		{$IFDEF FPC} Dynlibs, {$ENDIF}
79	<	IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals;
79	>	IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals, FmtBCD;
80
81	<	{For Linux see result of GetFirebirdLibList method}
81	>	{For Linux see result of GetFirebirdLibListruntime/nongui/winipc.inc method}
82		{$IFDEF DARWIN}
83		const
84		FIREBIRD_SO2 = 'libfbclient.dylib';
#	Line 90 | Line 90 | FIREBIRD_CLIENT = 'fbclient.dll'; {do no
90		FIREBIRD_EMBEDDED = 'fbembed.dll';
91		{$ENDIF}
92
93	<	{$IFNDEF FPC}
94	<	type
95	<	TLibHandle = THandle;
93	>	const
94	>	{fb_shutdown reasons}
95	>	fb_shutrsn_svc_stopped          = -1;
96	>	fb_shutrsn_no_connection        = -2;
97	>	fb_shutrsn_app_stopped          = -3;
98	>	fb_shutrsn_signal               = -5;
99	>	fb_shutrsn_services             = -6;
100	>	fb_shutrsn_exit_called          = -7;
101
102		const
103	<	NilHandle = 0;
104	<	DirectorySeparator = '\';
105	<	{$ENDIF}
103	>	DefaultTimeZoneFile = '/etc/timezone';
104	>
105	>	const
106	>	IBLocalBufferLength = 512;
107	>	IBBigLocalBufferLength = IBLocalBufferLength * 2;
108	>	IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
109
110		type
111		TStatusVector              = array[0..19] of NativeInt;
#	Line 110 | Line 118 | type
118		TFBStatus = class(TFBInterfacedObject)
119		private
120		FIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
121	+	FPrefix: AnsiString;
122		protected
123		FOwner: TFBClientAPI;
124		public
125	<	constructor Create(aOwner: TFBClientAPI);
125	>	constructor Create(aOwner: TFBClientAPI; prefix: AnsiString='');
126		function StatusVector: PStatusVector; virtual; abstract;
127
128		{IStatus}
129	<	function GetIBErrorCode: Long;
130	<	function Getsqlcode: Long;
129	>	function GetIBErrorCode: TStatusCode;
130	>	function Getsqlcode: TStatusCode;
131		function GetMessage: AnsiString;
132		function CheckStatusVector(ErrorCodes: array of TFBStatusCode): Boolean;
133		function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
134		procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
135		end;
136
137	+	{ TFBLibrary }
138	+
139	+	TFBLibrary = class(TFBInterfacedObject,IFirebirdLibrary)
140	+	private
141	+	class var FEnvSetupDone: boolean;
142	+	class var FLibraryList: array of IFirebirdLibrary;
143	+	private
144	+	FFirebirdAPI: IFirebirdAPI;
145	+	FRequestedLibName: string;
146	+	function LoadIBLibrary: boolean;
147	+	protected
148	+	FFBLibraryName: string;
149	+	FIBLibrary: TLibHandle;
150	+	procedure FreeFBLibrary;
151	+	function GetOverrideLibName: string;
152	+	class procedure SetupEnvironment;
153	+	protected
154	+	function GetFirebird3API: IFirebirdAPI; virtual; abstract;
155	+	function GetLegacyFirebirdAPI: IFirebirdAPI; virtual; abstract;
156	+	public
157	+	constructor Create(aLibPathName: string='');
158	+	destructor Destroy; override;
159	+	class function GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
160	+	class procedure FreeLibraries;
161	+	function SameLibrary(aLibName: string): boolean;
162	+
163	+	public
164	+	{IFirebirdLibrary}
165	+	function GetHandle: TLibHandle;
166	+	function GetLibraryName: string;
167	+	function GetLibraryFilePath: string;
168	+	function GetFirebirdAPI: IFirebirdAPI;
169	+	property IBLibrary: TLibHandle read FIBLibrary;
170	+	end;
171	+
172		{ TFBClientAPI }
173
174		TFBClientAPI = class(TFBInterfacedObject)
175		private
176	<	FOwnsIBLibrary: boolean;
176	>	FLocalTimeZoneName: AnsiString; {Informal Time Zone Name from tzname e.g. GMT or BST}
177	>	FTZDataTimeZoneID: AnsiString; {TZData DB ID e.g. Europe/London}
178	>	FLocalTimeOffset: integer;
179	>	FIsDaylightSavingsTime: boolean;
180		class var FIBCS: TRTLCriticalSection;
181	<	procedure LoadIBLibrary;
181	>	function FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
182	>	procedure GetTZDataSettings;
183		protected
184	<	class var FFBLibraryName: string;
137	<	class var IBLibrary: TLibHandle;
138	<	{$IFDEF WINDOWS}
139	<	class var FFBLibraryPath: string;
140	<	{$ENDIF}
184	>	FFBLibrary: TFBLibrary;
185		function GetProcAddr(ProcName: PAnsiChar): Pointer;
186	<	function GetOverrideLibName: string;
187	<	{$IFDEF UNIX}
188	<	function GetFirebirdLibList: string; virtual; abstract;
189	<	{$ENDIF}
190	<	procedure LoadInterface; virtual;
186	>
187	>	protected type
188	>	Tfb_shutdown = function (timeout: uint;
189	>	const reason: int): int;
190	>	{$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
191	>	protected
192	>	{FB Shutdown API}
193	>	fb_shutdown: Tfb_shutdown;
194	>
195		public
196		{Taken from legacy API}
197		isc_sqlcode: Tisc_sqlcode;
198		isc_sql_interprete: Tisc_sql_interprete;
151	–	isc_interprete: Tisc_interprete;
199		isc_event_counts: Tisc_event_counts;
200		isc_event_block: Tisc_event_block;
201		isc_free: Tisc_free;
202	+	isc_portable_integer: Tisc_portable_integer;
203
204	<	constructor Create;
157	<	destructor Destroy; override;
204	>	constructor Create(aFBLibrary: TFBLibrary);
205		procedure IBAlloc(var P; OldSize, NewSize: Integer);
206		procedure IBDataBaseError;
207	<	procedure SetupEnvironment;
207	>	function LoadInterface: boolean; virtual;
208	>	procedure FBShutdown; virtual;
209	>	function GetAPI: IFirebirdAPI; virtual; abstract;
210	>	{$IFDEF UNIX}
211	>	function GetFirebirdLibList: string; virtual; abstract;
212	>	{$ENDIF}
213	>	function HasDecFloatSupport: boolean;
214	>	function HasInt128Support: boolean; virtual;
215	>	function HasLocalTZDB: boolean; virtual;
216	>	function HasExtendedTZSupport: boolean; virtual;
217	>	function HasTimeZoneSupport: boolean; virtual;
218
219	+	public
220	+	property LocalTimeZoneName: AnsiString read FLocalTimeZoneName;
221	+	property TZDataTimeZoneID: AnsiString read FTZDataTimeZoneID;
222	+	property LocalTimeOffset: integer read FLocalTimeOffset;
223	+	public
224		{Encode/Decode}
225		procedure EncodeInteger(aValue: integer; len: integer; buffer: PByte);
226	<	function DecodeInteger(bufptr: PByte; len: short): integer; virtual; abstract;
227	<	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte); virtual; abstract;
228	<	function SQLDecodeDate(byfptr: PByte): TDateTime; virtual; abstract;
229	<	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte); virtual; abstract;
226	>	function DecodeInteger(bufptr: PByte; len: short): int64;
227	>	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte);  virtual; abstract;
228	>	function SQLDecodeDate(byfptr: PByte): TDateTime;  virtual; abstract;
229	>	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte);  virtual; abstract;
230		function SQLDecodeTime(bufptr: PByte): TDateTime;  virtual; abstract;
231		procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); virtual; abstract;
232	<	function SQLDecodeDateTime(bufptr: PByte): TDateTime; virtual; abstract;
233	<
232	>	function  SQLDecodeDateTime(bufptr: PByte): TDateTime; virtual; abstract;
233	>	function FormatStatus(Status: TFBStatus): AnsiString; virtual; abstract;
234	>	function Int128ToStr(bufptr: PByte; scale: integer): AnsiString; virtual;
235	>	procedure StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
236	>	virtual;
237	>	procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte); virtual;
238	>	function SQLDecFloatDecode(SQLType: cardinal;  bufptr: PByte): tBCD; virtual;
239
240		{IFirebirdAPI}
241		function GetStatus: IStatus; virtual; abstract;
242		function IsLibraryLoaded: boolean;
243		function IsEmbeddedServer: boolean; virtual; abstract;
244	<	function GetLibraryName: string;
245	<	end;
244	>	function GetFBLibrary: IFirebirdLibrary;
245	>	function GetImplementationVersion: AnsiString;
246	>	function GetClientMajor: integer;  virtual; abstract;
247	>	function GetClientMinor: integer;  virtual; abstract;
248	>	end;
249
250	<	var FirebirdClientAPI: TFBClientAPI = nil;
250	>	IJournallingHook = interface
251	>	['{7d3e45e0-3628-416a-9e22-c20474825031}']
252	>	procedure TransactionStart(Tr: ITransaction);
253	>	function TransactionEnd(TransactionID: integer; Action: TTransactionAction): boolean;
254	>	procedure TransactionRetained(Tr: ITransaction; OldTransactionID: integer; Action: TTransactionAction);
255	>	procedure ExecQuery(Stmt: IStatement);
256	>	end;
257
258		implementation
259
260	<	uses IBUtils, Registry, {$IFDEF Unix} initc, {$ENDIF}
260	>	uses IBUtils, Registry,
261	>	{$IFDEF Unix} unix, initc, dl, {$ENDIF}
262		{$IFDEF FPC}
263		{$IFDEF WINDOWS }
264		WinDirs,
#	Line 197 | Line 274 | SysUtils;
274		{$I 'include/wloadlibrary.inc'}
275		{$ENDIF}
276
277	<	{$IFDEF Unix}
278	<	{SetEnvironmentVariable doesn't exist so we have to use C Library}
279	<	function setenv(name:Pchar; value:Pchar; replace:integer):integer;cdecl;external clib name 'setenv';
280	<	function unsetenv(name:Pchar):integer;cdecl;external clib name 'unsetenv';
281	<	function SetEnvironmentVariable(name:PAnsiChar; value:PAnsiChar):boolean;
282	<	// Set environment variable; if empty string given, remove it.
277	>
278	>	{ TFBLibrary }
279	>
280	>	function TFBLibrary.GetOverrideLibName: string;
281	>	begin
282	>	Result := FFBLibraryName;
283	>	if (Result = '') and AllowUseOfFBLIB then
284	>	Result := GetEnvironmentVariable('FBLIB');
285	>	if Result = '' then
286		begin
287	<	result:=false; //assume failure
288	<	if value = '' then
209	<	begin
210	<	// Assume user wants to remove variable.
211	<	if unsetenv(name)=0 then result:=true;
212	<	end
213	<	else
214	<	begin
215	<	// Non empty so set the variable
216	<	if setenv(name, value, 1)=0 then result:=true;
217	<	end;
287	>	if assigned(OnGetLibraryName) then
288	>	OnGetLibraryName(Result)
289		end;
290	<	{$ENDIF}
290	>	end;
291
292	<	{ TFBClientAPI }
292	>	procedure TFBLibrary.FreeFBLibrary;
293	>	begin
294	>	(FFirebirdAPI as TFBClientAPI).FBShutdown;
295	>	if FIBLibrary <> NilHandle then
296	>	FreeLibrary(FIBLibrary);
297	>	FIBLibrary := NilHandle;
298	>	FFBLibraryName := '';
299	>	end;
300
301	<	constructor TFBClientAPI.Create;
301	>	function TFBLibrary.GetLibraryName: string;
302	>	begin
303	>	Result := ExtractFileName(FFBLibraryName);
304	>	end;
305	>
306	>	function TFBLibrary.GetFirebirdAPI: IFirebirdAPI;
307	>	begin
308	>	Result := FFirebirdAPI;
309	>	end;
310	>
311	>	constructor TFBLibrary.Create(aLibPathName: string);
312		begin
313		inherited Create;
314	<	LoadIBLibrary;
315	<	if (IBLibrary <> NilHandle) then
314	>	SetupEnvironment;
315	>	FFBLibraryName := aLibPathName;
316	>	FIBLibrary := NilHandle;
317	>	FFirebirdAPI := GetFirebird3API;
318	>	FRequestedLibName := aLibPathName;
319	>	if aLibPathName <> '' then
320	>	begin
321	>	SetLength(FLibraryList,Length(FLibraryList)+1);
322	>	FLibraryList[Length(FLibraryList)-1] := self;
323	>	end;
324	>	if FFirebirdAPI <> nil then
325	>	begin
326	>	{First try Firebird 3}
327	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
328	>	FFirebirdAPI := nil;
329	>	end;
330	>
331	>	if FFirebirdAPI = nil then
332		begin
333	<	SetupEnvironment;
334	<	LoadInterface;
333	>	{now try Firebird 2.5. Under Unix we need to reload the library in case we
334	>	are to use the embedded library}
335	>	FFirebirdAPI := GetLegacyFirebirdAPI;
336	>	if FFirebirdAPI <> nil then
337	>	begin
338	>	{$IFDEF UNIX}
339	>	FreeFBLibrary;
340	>	{$ENDIF}
341	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
342	>	FFirebirdAPI := nil;
343	>	end;
344		end;
345	<	FirebirdClientAPI := self;
345	>	{Note: FFirebirdAPI will be set to nil if the Firebird API fails to load}
346		end;
347
348	<	destructor TFBClientAPI.Destroy;
348	>	destructor TFBLibrary.Destroy;
349		begin
350	<	FirebirdClientAPI := nil;
351	<	if FOwnsIBLibrary and (IBLibrary <> NilHandle) then
239	<	FreeLibrary(IBLibrary);
240	<	IBLibrary := NilHandle;
350	>	FreeFBLibrary;
351	>	FFirebirdAPI := nil;
352		inherited Destroy;
353		end;
354
355	+	class function TFBLibrary.GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
356	+	var i: integer;
357	+	begin
358	+	Result := nil;
359	+	if aLibPathName <> '' then
360	+	begin
361	+	for i := 0 to Length(FLibraryList) - 1 do
362	+	begin
363	+	if (FLibraryList[i] as TFBLibrary).SameLibrary(aLibPathName) then
364	+	begin
365	+	Result := FLibraryList[i];
366	+	Exit;
367	+	end;
368	+	end;
369	+	Result := Create(aLibPathName);
370	+	end;
371	+
372	+	end;
373	+
374	+	class procedure TFBLibrary.FreeLibraries;
375	+	var i: integer;
376	+	begin
377	+	for i := 0 to Length(FLibraryList) - 1 do
378	+	FLibraryList[i] := nil;
379	+	SetLength(FLibraryList,0);
380	+	end;
381	+
382	+	function TFBLibrary.SameLibrary(aLibName: string): boolean;
383	+	begin
384	+	Result := FRequestedLibName = aLibName;
385	+	end;
386	+
387	+	function TFBLibrary.GetHandle: TLibHandle;
388	+	begin
389	+	Result := FIBLibrary;
390	+	end;
391	+
392	+	{ TFBClientAPI }
393	+
394	+	constructor TFBClientAPI.Create(aFBLibrary: TFBLibrary);
395	+	begin
396	+	inherited Create;
397	+	FFBLibrary := aFBLibrary;
398	+	GetTZDataSettings;
399	+	end;
400	+
401		procedure TFBClientAPI.IBAlloc(var P; OldSize, NewSize: Integer);
402		var
403		i: Integer;
#	Line 254 | Line 411 | begin
411		raise EIBInterBaseError.Create(GetStatus);
412		end;
413
257	–	{Under Unixes, if using an embedded server then set up local TMP and LOCK Directories}
258	–
259	–	procedure TFBClientAPI.SetupEnvironment;
260	–	var TmpDir: AnsiString;
261	–	begin
262	–	{$IFDEF UNIX}
263	–	TmpDir := GetTempDir +
264	–	DirectorySeparator + 'firebird_' + sysutils.GetEnvironmentVariable('USER');
265	–	if sysutils.GetEnvironmentVariable('FIREBIRD_TMP') = '' then
266	–	begin
267	–	if not DirectoryExists(tmpDir) then
268	–	mkdir(tmpDir);
269	–	SetEnvironmentVariable('FIREBIRD_TMP',PAnsiChar(TmpDir));
270	–	end;
271	–	if sysutils.GetEnvironmentVariable('FIREBIRD_LOCK') = '' then
272	–	begin
273	–	if not DirectoryExists(tmpDir) then
274	–	mkdir(tmpDir);
275	–	SetEnvironmentVariable('FIREBIRD_LOCK',PAnsiChar(TmpDir));
276	–	end;
277	–	{$ENDIF}
278	–	end;
279	–
414		procedure TFBClientAPI.EncodeInteger(aValue: integer; len: integer; buffer: PByte);
415		begin
416		while len > 0 do
#	Line 288 | Line 422 | begin
422		end;
423		end;
424
425	+	function TFBClientAPI.DecodeInteger(bufptr: PByte; len: short): int64;
426	+	begin
427	+	Result := isc_portable_integer(bufptr,len);
428	+	end;
429	+
430	+	function TFBClientAPI.Int128ToStr(bufptr: PByte; scale: integer): AnsiString;
431	+	begin
432	+	if not HasInt128Support then
433	+	IBError(ibxeNotSupported,[]);
434	+	end;
435	+
436	+	procedure TFBClientAPI.StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
437	+	begin
438	+	if not HasInt128Support then
439	+	IBError(ibxeNotSupported,[]);
440	+	end;
441	+
442	+	procedure TFBClientAPI.SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal;
443	+	bufptr: PByte);
444	+	begin
445	+	if not HasDecFloatSupport then
446	+	IBError(ibxeNotSupported,[]);
447	+	end;
448	+
449	+	function TFBClientAPI.SQLDecFloatDecode(SQLType: cardinal; bufptr: PByte): tBCD;
450	+	begin
451	+	if not HasDecFloatSupport then
452	+	IBError(ibxeNotSupported,[]);
453	+	end;
454	+
455		function TFBClientAPI.IsLibraryLoaded: boolean;
456		begin
457	<	Result := IBLibrary <> NilHandle;
457	>	Result := FFBLibrary.IBLibrary <> NilHandle;
458	>	end;
459	>
460	>	function TFBClientAPI.GetFBLibrary: IFirebirdLibrary;
461	>	begin
462	>	Result := FFBLibrary;
463	>	end;
464	>
465	>	function TFBClientAPI.FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
466	>	begin
467	>	{aDate/aTime are in TTimestamp format but aTime is decimilliseconds}
468	>	aDate := aDate - DateDelta;
469	>	if aDate < 0 then
470	>	Result := trunc(aDate) - abs(frac(aTime / (MSecsPerDay*10)))
471	>	else
472	>	Result := trunc(aDate) + abs(frac(aTime / (MSecsPerDay*10)));
473		end;
474
475	+	{$IFDEF UNIX}
476	+
477	+	procedure TFBClientAPI.GetTZDataSettings;
478	+	var S: TStringList;
479	+	begin
480	+	FLocalTimeOffset := GetLocalTimeOffset;
481	+	{$if declared(Gettzname)}
482	+	FLocalTimeZoneName := Gettzname(tzdaylight);
483	+	{$else}
484	+	FLocalTimeZoneName := tzname[tzdaylight];
485	+	{$ifend}
486	+	FIsDaylightSavingsTime := tzdaylight;
487	+	if FileExists(DefaultTimeZoneFile) then
488	+	begin
489	+	S := TStringList.Create;
490	+	try
491	+	S.LoadFromFile(DefaultTimeZoneFile);
492	+	if S.Count > 0 then
493	+	FTZDataTimeZoneID := S[0];
494	+	finally
495	+	S.Free;
496	+	end;
497	+	end;
498	+	end;
499	+	{$ENDIF}
500	+
501	+	{$IFDEF WINDOWS}
502	+	procedure TFBClientAPI.GetTZDataSettings;
503	+	var TZInfo: TTimeZoneInformation;
504	+	begin
505	+	FIsDaylightSavingsTime := false;
506	+	{is there any way of working out the default TZData DB time zone ID under Windows?}
507	+	case GetTimeZoneInformation(TZInfo) of
508	+	TIME_ZONE_ID_UNKNOWN:
509	+	begin
510	+	FLocalTimeZoneName := '';
511	+	FLocalTimeOffset := 0;
512	+	end;
513	+	TIME_ZONE_ID_STANDARD:
514	+	begin
515	+	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.StandardName));
516	+	FLocalTimeOffset := TZInfo.Bias;
517	+	end;
518	+	TIME_ZONE_ID_DAYLIGHT:
519	+	begin
520	+	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.DaylightName));
521	+	FLocalTimeOffset := TZInfo.DayLightBias;
522	+	FIsDaylightSavingsTime := true;
523	+	end;
524	+	end;
525	+	end;
526	+	{$ENDIF}
527	+
528		function TFBClientAPI.GetProcAddr(ProcName: PAnsiChar): Pointer;
529		begin
530	<	Result := GetProcAddress(IBLibrary, ProcName);
530	>	Result := nil;
531	>	if assigned(FFBLibrary) and (FFBLibrary.IBLibrary <> NilHandle) then
532	>	Result := GetProcAddress(FFBLibrary.IBLibrary, ProcName);
533		if not Assigned(Result) then
534		raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
535		end;
536
537	<	function TFBClientAPI.GetOverrideLibName: string;
537	>	function TFBClientAPI.HasDecFloatSupport: boolean;
538		begin
539	<	Result := '';
540	<	if AllowUseOfFBLIB then
541	<	Result := GetEnvironmentVariable('FBLIB');
542	<	if Result = '' then
543	<	begin
544	<	if assigned(OnGetLibraryName) then
545	<	OnGetLibraryName(Result)
546	<	end;
539	>	Result := GetClientMajor >= 4;
540	>	end;
541	>
542	>	function TFBClientAPI.HasInt128Support: boolean;
543	>	begin
544	>	Result := false;
545	>	end;
546	>
547	>	function TFBClientAPI.HasLocalTZDB: boolean;
548	>	begin
549	>	Result := false;
550	>	end;
551	>
552	>	function TFBClientAPI.HasExtendedTZSupport: boolean;
553	>	begin
554	>	Result := false;
555		end;
556
557	<	procedure TFBClientAPI.LoadInterface;
557	>	function TFBClientAPI.HasTimeZoneSupport: boolean;
558	>	begin
559	>	Result := false;
560	>	end;
561	>
562	>	function TFBClientAPI.GetImplementationVersion: AnsiString;
563	>	begin
564	>	Result := Format('%d.%d',[GetClientMajor,GetClientMinor]);
565	>	end;
566	>
567	>	function TFBClientAPI.LoadInterface: boolean;
568		begin
569		isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
570		isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
319	–	isc_interprete := GetProcAddr('isc_interprete'); {do not localize}
571		isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
572		isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
573		isc_free := GetProcAddr('isc_free'); {do not localize}
574	+	isc_portable_integer := GetProcAddr('isc_portable_integer'); {do not localize}
575	+	fb_shutdown := GetProcAddr('fb_shutdown'); {do not localize}
576	+	Result := assigned(isc_free);
577		end;
578
579	<	function TFBClientAPI.GetLibraryName: string;
579	>	procedure TFBClientAPI.FBShutdown;
580		begin
581	<	Result := FFBLibraryName;
581	>	if assigned(fb_shutdown) then
582	>	fb_shutdown(0,fb_shutrsn_exit_called);
583		end;
584
330	–	const
331	–	IBLocalBufferLength = 512;
332	–	IBBigLocalBufferLength = IBLocalBufferLength * 2;
333	–	IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
334	–
585		{ TFBStatus }
586
587	<	constructor TFBStatus.Create(aOwner: TFBClientAPI);
587	>	constructor TFBStatus.Create(aOwner: TFBClientAPI; prefix: AnsiString);
588		begin
589		inherited Create;
590		FOwner := aOwner;
591	<	FIBDataBaseErrorMessages := [ShowSQLMessage, ShowIBMessage];
591	>	FPrefix := prefix;
592	>	FIBDataBaseErrorMessages := [ShowSQLCode, ShowSQLMessage, ShowIBMessage];
593		end;
594
595	<	function TFBStatus.GetIBErrorCode: Long;
595	>	function TFBStatus.GetIBErrorCode: TStatusCode;
596		begin
597		Result := StatusVector^[1];
598		end;
599
600	<	function TFBStatus.Getsqlcode: Long;
600	>	function TFBStatus.Getsqlcode: TStatusCode;
601		begin
602		with FOwner do
603		Result := isc_sqlcode(PISC_STATUS(StatusVector));
#	Line 356 | Line 607 | function TFBStatus.GetMessage: AnsiStrin
607		var local_buffer: array[0..IBHugeLocalBufferLength - 1] of AnsiChar;
608		IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
609		sqlcode: Long;
359	–	psb: PStatusVector;
610		begin
611	<	Result := '';
611	>	Result := FPrefix;
612		IBDataBaseErrorMessages := FIBDataBaseErrorMessages;
613		sqlcode := Getsqlcode;
614		if (ShowSQLCode in IBDataBaseErrorMessages) then
615		Result := Result + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
616
367	–	Exclude(IBDataBaseErrorMessages, ShowSQLMessage);
617		if (ShowSQLMessage in IBDataBaseErrorMessages) then
618		begin
619		with FOwner do
620	<	isc_sql_interprete(sqlcode, local_buffer, IBLocalBufferLength);
620	>	isc_sql_interprete(sqlcode, local_buffer, sizeof(local_buffer));
621		if (ShowSQLCode in FIBDataBaseErrorMessages) then
622	<	Result := Result + CRLF;
623	<	Result := Result + strpas(local_buffer);
622	>	Result := Result + LineEnding;
623	>	Result := Result + 'Engine Code: ' + IntToStr(GetIBErrorCode) + ' ' + strpas(local_buffer);
624		end;
625
626		if (ShowIBMessage in IBDataBaseErrorMessages) then
627		begin
628		if (ShowSQLCode in IBDataBaseErrorMessages) or
629		(ShowSQLMessage in IBDataBaseErrorMessages) then
630	<	Result := Result + CRLF;
631	<	psb := StatusVector;
383	<	with FOwner do
384	<	while (isc_interprete(@local_buffer, @psb) > 0) do
385	<	begin
386	<	if (Result <> '') and (Result[Length(Result)] <> LF) then
387	<	Result := Result + CRLF;
388	<	Result := Result + strpas(local_buffer);
389	<	end;
630	>	Result := Result + LineEnding;
631	>	Result := Result + FOwner.FormatStatus(self);
632		end;
633		if (Result <> '') and (Result[Length(Result)] = '.') then
634		Delete(Result, Length(Result), 1);
#	Line 444 | Line 686 | begin
686		end;
687
688		initialization
689	<	TFBClientAPI.IBLibrary := NilHandle;
689	>	TFBLibrary.FEnvSetupDone := false;
690		{$IFNDEF FPC}
691		InitializeCriticalSection(TFBClientAPI.FIBCS);
692		{$ELSE}
#	Line 452 | Line 694 | initialization
694		{$ENDIF}
695
696		finalization
697	+	TFBLibrary.FreeLibraries;
698		{$IFNDEF FPC}
699		DeleteCriticalSection(TFBClientAPI.FIBCS);
700		{$ELSE}
701		DoneCriticalSection(TFBClientAPI.FIBCS);
702		{$ENDIF}
460	–	if TFBClientAPI.IBLibrary <> NilHandle then
461	–	begin
462	–	FreeLibrary(TFBClientAPI.IBLibrary);
463	–	TFBClientAPI.IBLibrary := NilHandle;
464	–	TFBClientAPI.FFBLibraryName := '';
465	–	end;
466	–
703		end.
704

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