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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 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
ibx/branches/udr/client/FBClientAPI.pas (file contents), Revision 371 by tony, Wed Jan 5 15:21:22 2022 UTC

#	Line 60 | Line 60
60		{                                                                        }
61		{************************************************************************}
62		unit FBClientAPI;
63	+	{$IFDEF MSWINDOWS}
64	+	{$DEFINE WINDOWS}
65	+	{$ENDIF}
66
67		{$IFDEF FPC}
68		{$mode delphi}
#	Line 70 | Line 73 | unit FBClientAPI;
73		interface
74
75		uses
76	<	Classes,  Dynlibs, IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals;
76	>	Classes,
77	>	{$IFDEF WINDOWS}Windows, {$ENDIF}
78	>	{$IFDEF FPC} Dynlibs, {$ENDIF}
79	>	IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals, FmtBCD;
80
81	<	{For Linux see result of GetFirebirdLibList method}
81	>	{For Linux see result of GetFirebirdLibListruntime/nongui/winipc.inc method}
82		{$IFDEF DARWIN}
83		const
84		FIREBIRD_SO2 = 'libfbclient.dylib';
#	Line 84 | Line 90 | FIREBIRD_CLIENT = 'fbclient.dll'; {do no
90		FIREBIRD_EMBEDDED = 'fbembed.dll';
91		{$ENDIF}
92
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	+	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;
112		PStatusVector              = ^TStatusVector;
#	Line 94 | Line 117 | type
117
118		TFBStatus = class(TFBInterfacedObject)
119		private
97	–	FIBCS: TRTLCriticalSection; static;
120		FIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
121	+	FPrefix: AnsiString;
122		protected
123		FOwner: TFBClientAPI;
124	+	function GetIBMessage: Ansistring; virtual; abstract;
125	+	function GetSQLMessage: Ansistring;
126		public
127	<	constructor Create(aOwner: TFBClientAPI);
127	>	constructor Create(aOwner: TFBClientAPI; prefix: AnsiString='');
128		function StatusVector: PStatusVector; virtual; abstract;
129
130		{IStatus}
131	<	function GetIBErrorCode: Long;
132	<	function Getsqlcode: Long;
133	<	function GetMessage: string;
131	>	function GetIBErrorCode: TStatusCode;
132	>	function Getsqlcode: TStatusCode;
133	>	function GetMessage: AnsiString;
134		function CheckStatusVector(ErrorCodes: array of TFBStatusCode): Boolean;
135		function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
136		procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
137		end;
138
139	+	{ TFBLibrary }
140	+
141	+	TFBLibrary = class(TFBInterfacedObject,IFirebirdLibrary)
142	+	private
143	+	class var FEnvSetupDone: boolean;
144	+	class var FLibraryList: array of IFirebirdLibrary;
145	+	private
146	+	FFirebirdAPI: IFirebirdAPI;
147	+	FRequestedLibName: string;
148	+	function LoadIBLibrary: boolean;
149	+	protected
150	+	FFBLibraryName: string;
151	+	FIBLibrary: TLibHandle;
152	+	procedure FreeFBLibrary;
153	+	function GetOverrideLibName: string;
154	+	class procedure SetupEnvironment;
155	+	protected
156	+	function GetFirebird3API: IFirebirdAPI; virtual; abstract;
157	+	function GetLegacyFirebirdAPI: IFirebirdAPI; virtual; abstract;
158	+	public
159	+	constructor Create(aLibPathName: string='');
160	+	destructor Destroy; override;
161	+	class function GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
162	+	class procedure FreeLibraries;
163	+	function SameLibrary(aLibName: string): boolean;
164	+
165	+	public
166	+	{IFirebirdLibrary}
167	+	function GetHandle: TLibHandle;
168	+	function GetLibraryName: string;
169	+	function GetLibraryFilePath: string;
170	+	function GetFirebirdAPI: IFirebirdAPI;
171	+	property IBLibrary: TLibHandle read FIBLibrary;
172	+	end;
173	+
174		{ TFBClientAPI }
175
176		TFBClientAPI = class(TFBInterfacedObject)
177		private
178	<	FOwnsIBLibrary: boolean;
179	<	procedure LoadIBLibrary;
178	>	FLocalTimeZoneName: AnsiString; {Informal Time Zone Name from tzname e.g. GMT or BST}
179	>	FTZDataTimeZoneID: AnsiString; {TZData DB ID e.g. Europe/London}
180	>	FLocalTimeOffset: integer;
181	>	FIsDaylightSavingsTime: boolean;
182	>	class var FIBCS: TRTLCriticalSection;
183	>	function FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
184	>	procedure GetTZDataSettings;
185		protected
186	<	FFBLibraryName: string; static;
187	<	FFBLibraryPath: string; static;
188	<	IBLibrary: TLibHandle; static;
189	<	function GetProcAddr(ProcName: PChar): Pointer;
190	<	function GetOverrideLibName: string;
191	<	{$IFDEF UNIX}
192	<	function GetFirebirdLibList: string; virtual; abstract;
193	<	{$ENDIF}
194	<	procedure LoadInterface; virtual;
186	>	FFBLibrary: TFBLibrary;
187	>	function GetProcAddr(ProcName: PAnsiChar): Pointer;
188	>
189	>	protected type
190	>	Tfb_shutdown = function (timeout: uint;
191	>	const reason: int): int;
192	>	{$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
193	>	protected
194	>	{FB Shutdown API}
195	>	fb_shutdown: Tfb_shutdown;
196	>
197		public
198		{Taken from legacy API}
132	–	isc_sqlcode: Tisc_sqlcode;
199		isc_sql_interprete: Tisc_sql_interprete;
200	<	isc_interprete: Tisc_interprete;
135	<	isc_event_counts: Tisc_event_counts;
136	<	isc_event_block: Tisc_event_block;
137	<	isc_free: Tisc_free;
200	>	isc_sqlcode: Tisc_sqlcode;
201
202	<	constructor Create;
140	<	destructor Destroy; override;
202	>	constructor Create(aFBLibrary: TFBLibrary);
203		procedure IBAlloc(var P; OldSize, NewSize: Integer);
204		procedure IBDataBaseError;
205	<	procedure SetupEnvironment;
205	>	function LoadInterface: boolean; virtual;
206	>	procedure FBShutdown; virtual;
207	>	function GetAPI: IFirebirdAPI; virtual; abstract;
208	>	{$IFDEF UNIX}
209	>	function GetFirebirdLibList: string; virtual; abstract;
210	>	{$ENDIF}
211	>	function HasDecFloatSupport: boolean;
212	>	function HasInt128Support: boolean; virtual;
213	>	function HasLocalTZDB: boolean; virtual;
214	>	function HasExtendedTZSupport: boolean; virtual;
215	>	function HasTimeZoneSupport: boolean; virtual;
216
217	+	public
218	+	property LocalTimeZoneName: AnsiString read FLocalTimeZoneName;
219	+	property TZDataTimeZoneID: AnsiString read FTZDataTimeZoneID;
220	+	property LocalTimeOffset: integer read FLocalTimeOffset;
221	+	public
222		{Encode/Decode}
223	<	procedure EncodeInteger(aValue: integer; len: integer; buffer: PChar);
224	<	function DecodeInteger(bufptr: PChar; len: short): integer; virtual; abstract;
225	<	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PChar); virtual; abstract;
226	<	function SQLDecodeDate(byfptr: PChar): TDateTime; virtual; abstract;
227	<	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PChar); virtual; abstract;
228	<	function SQLDecodeTime(bufptr: PChar): TDateTime;  virtual; abstract;
229	<	procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PChar); virtual; abstract;
230	<	function SQLDecodeDateTime(bufptr: PChar): TDateTime; virtual; abstract;
231	<
223	>	procedure EncodeInteger(aValue: int64; len: integer; buffer: PByte);
224	>	function DecodeInteger(bufptr: PByte; len: short): int64;
225	>	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte);  virtual; abstract;
226	>	function SQLDecodeDate(byfptr: PByte): TDateTime;  virtual; abstract;
227	>	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte);  virtual; abstract;
228	>	function SQLDecodeTime(bufptr: PByte): TDateTime;  virtual; abstract;
229	>	procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); virtual; abstract;
230	>	function  SQLDecodeDateTime(bufptr: PByte): TDateTime; virtual; abstract;
231	>	function Int128ToStr(bufptr: PByte; scale: integer): AnsiString; virtual;
232	>	procedure StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
233	>	virtual;
234	>	procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte); virtual;
235	>	function SQLDecFloatDecode(SQLType: cardinal;  bufptr: PByte): tBCD; virtual;
236
237		{IFirebirdAPI}
238		function GetStatus: IStatus; virtual; abstract;
239		function IsLibraryLoaded: boolean;
240		function IsEmbeddedServer: boolean; virtual; abstract;
241	<	function GetLibraryName: string;
242	<	function GetCharsetName(CharSetID: integer): string;
243	<	function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
244	<	function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
164	<	function CharSetName2CharSetID(CharSetName: string; var CharSetID: integer): boolean;
165	<	function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
241	>	function GetFBLibrary: IFirebirdLibrary;
242	>	function GetImplementationVersion: AnsiString;
243	>	function GetClientMajor: integer;  virtual; abstract;
244	>	function GetClientMinor: integer;  virtual; abstract;
245		end;
246
247	<	const FirebirdClientAPI: TFBClientAPI = nil;
247	>	IJournallingHook = interface
248	>	['{7d3e45e0-3628-416a-9e22-c20474825031}']
249	>	procedure TransactionStart(Tr: ITransaction);
250	>	function TransactionEnd(TransactionID: integer; Action: TTransactionAction): boolean;
251	>	procedure TransactionRetained(Tr: ITransaction; OldTransactionID: integer; Action: TTransactionAction);
252	>	procedure ExecQuery(Stmt: IStatement);
253	>	end;
254
255		implementation
256
257	<	uses IBUtils, {$IFDEF Unix} initc, {$ENDIF}
257	>	uses IBUtils, Registry,
258	>	{$IFDEF Unix} unix, initc, dl, {$ENDIF}
259	>	{$IFDEF FPC}
260		{$IFDEF WINDOWS }
261	<	Windows,Registry, WinDirs,
261	>	WinDirs,
262	>	{$ENDIF}
263	>	{$ELSE}
264	>	ShlObj,
265		{$ENDIF}
266		SysUtils;
267
268		{$IFDEF UNIX}
269	<	{$I uloadlibrary.inc}
269	>	{$I 'include/uloadlibrary.inc'}
270		{$ELSE}
271	<	{$I wloadlibrary.inc}
271	>	{$I 'include/wloadlibrary.inc'}
272		{$ENDIF}
273
274	<	type
275	<	TCharsetMap = record
276	<	CharsetID: integer;
277	<	CharSetName: string;
278	<	CharSetWidth: integer;
279	<	CodePage: TSystemCodePage;
274	>
275	>	{ TFBLibrary }
276	>
277	>	function TFBLibrary.GetOverrideLibName: string;
278	>	begin
279	>	Result := FFBLibraryName;
280	>	if (Result = '') and AllowUseOfFBLIB then
281	>	Result := GetEnvironmentVariable('FBLIB');
282	>	if Result = '' then
283	>	begin
284	>	if assigned(OnGetLibraryName) then
285	>	OnGetLibraryName(Result)
286		end;
287	+	end;
288
289	<	const
290	<	CharSetMap: array [0..69] of TCharsetMap = (
291	<	(CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_NONE),
292	<	(CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE),
293	<	(CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII),
294	<	(CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8),
295	<	(CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8),
296	<	(CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932),
297	<	(CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932),
298	<	(CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
299	<	(CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
300	<	(CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737),
301	<	(CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437),
302	<	(CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850),
303	<	(CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865),
304	<	(CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860),
305	<	(CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863),
306	<	(CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775),
307	<	(CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858),
308	<	(CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862),
309	<	(CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864),
310	<	(CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE),
311	<	(CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
312	<	(CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591),
313	<	(CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592),
314	<	(CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593),
315	<	(CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
316	<	(CharsetID: 25; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
220	<	(CharsetID: 26; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
221	<	(CharsetID: 27; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
222	<	(CharsetID: 28; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
223	<	(CharsetID: 29; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
224	<	(CharsetID: 30; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
225	<	(CharsetID: 31; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
226	<	(CharsetID: 32; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
227	<	(CharsetID: 33; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
228	<	(CharsetID: 34; CharSetName: 'ISO8859_4'; CharSetWidth: 1; CodePage: 28594),
229	<	(CharsetID: 35; CharSetName: 'ISO8859_5'; CharSetWidth: 1; CodePage: 28595),
230	<	(CharsetID: 36; CharSetName: 'ISO8859_6'; CharSetWidth: 1; CodePage: 28596),
231	<	(CharsetID: 37; CharSetName: 'ISO8859_7'; CharSetWidth: 1; CodePage: 28597),
232	<	(CharsetID: 38; CharSetName: 'ISO8859_8'; CharSetWidth: 1; CodePage: 28598),
233	<	(CharsetID: 39; CharSetName: 'ISO8859_9'; CharSetWidth: 1; CodePage: 28599),
234	<	(CharsetID: 40; CharSetName: 'ISO8859_13'; CharSetWidth: 1; CodePage: 28603),
235	<	(CharsetID: 41; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
236	<	(CharsetID: 42; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
237	<	(CharsetID: 43; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
238	<	(CharsetID: 44; CharSetName: 'KSC_5601'; CharSetWidth: 2; CodePage: 949),
239	<	(CharsetID: 45; CharSetName: 'DOS852'; CharSetWidth: 1; CodePage: 852),
240	<	(CharsetID: 46; CharSetName: 'DOS857'; CharSetWidth: 1; CodePage: 857),
241	<	(CharsetID: 47; CharSetName: 'DOS861'; CharSetWidth: 1; CodePage: 861),
242	<	(CharsetID: 48; CharSetName: 'DOS866'; CharSetWidth: 1; CodePage: 866),
243	<	(CharsetID: 49; CharSetName: 'DOS869'; CharSetWidth: 1; CodePage: 869),
244	<	(CharsetID: 50; CharSetName: 'CYRL'; CharSetWidth: 1; CodePage: 1251),
245	<	(CharsetID: 51; CharSetName: 'WIN1250'; CharSetWidth: 1; CodePage: 1250),
246	<	(CharsetID: 52; CharSetName: 'WIN1251'; CharSetWidth: 1; CodePage: 1251),
247	<	(CharsetID: 53; CharSetName: 'WIN1252'; CharSetWidth: 1; CodePage: 1252),
248	<	(CharsetID: 54; CharSetName: 'WIN1253'; CharSetWidth: 1; CodePage: 1253),
249	<	(CharsetID: 55; CharSetName: 'WIN1254'; CharSetWidth: 1; CodePage: 1254),
250	<	(CharsetID: 56; CharSetName: 'BIG_5'; CharSetWidth: 2; CodePage: 950),
251	<	(CharsetID: 57; CharSetName: 'GB_2312'; CharSetWidth: 2; CodePage: 936),
252	<	(CharsetID: 58; CharSetName: 'WIN1255'; CharSetWidth: 1; CodePage: 1255),
253	<	(CharsetID: 59; CharSetName: 'WIN1256'; CharSetWidth: 1; CodePage: 1256),
254	<	(CharsetID: 60; CharSetName: 'WIN1257'; CharSetWidth: 1; CodePage: 1257),
255	<	(CharsetID: 61; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
256	<	(CharsetID: 62; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
257	<	(CharsetID: 63; CharSetName: 'KOI8R'; CharSetWidth: 1; CodePage: 20866),
258	<	(CharsetID: 64; CharSetName: 'KOI8U'; CharSetWidth: 1; CodePage: 21866),
259	<	(CharsetID: 65; CharSetName: 'WIN1258'; CharSetWidth: 1; CodePage: 1258),
260	<	(CharsetID: 66; CharSetName: 'TIS620'; CharSetWidth: 1; CodePage: 874),
261	<	(CharsetID: 67; CharSetName: 'GBK'; CharSetWidth: 2; CodePage: 936),
262	<	(CharsetID: 68; CharSetName: 'CP943C'; CharSetWidth: 2; CodePage: 943),
263	<	(CharsetID: 69; CharSetName: 'GB18030'; CharSetWidth: 4; CodePage: 54936)
264	<	);
265	<
266	<	{$IFDEF Unix}
267	<	{SetEnvironmentVariable doesn't exist so we have to use C Library}
268	<	function setenv(name:Pchar; value:Pchar; replace:integer):integer;cdecl;external clib name 'setenv';
269	<	function unsetenv(name:Pchar):integer;cdecl;external clib name 'unsetenv';
270	<	function SetEnvironmentVariable(name:PChar; value:PChar):boolean;
271	<	// Set environment variable; if empty string given, remove it.
289	>	procedure TFBLibrary.FreeFBLibrary;
290	>	begin
291	>	(FFirebirdAPI as TFBClientAPI).FBShutdown;
292	>	if FIBLibrary <> NilHandle then
293	>	FreeLibrary(FIBLibrary);
294	>	FIBLibrary := NilHandle;
295	>	FFBLibraryName := '';
296	>	end;
297	>
298	>	function TFBLibrary.GetLibraryName: string;
299	>	begin
300	>	Result := ExtractFileName(FFBLibraryName);
301	>	end;
302	>
303	>	function TFBLibrary.GetFirebirdAPI: IFirebirdAPI;
304	>	begin
305	>	Result := FFirebirdAPI;
306	>	end;
307	>
308	>	constructor TFBLibrary.Create(aLibPathName: string);
309	>	begin
310	>	inherited Create;
311	>	SetupEnvironment;
312	>	FFBLibraryName := aLibPathName;
313	>	FIBLibrary := NilHandle;
314	>	FFirebirdAPI := GetFirebird3API;
315	>	FRequestedLibName := aLibPathName;
316	>	if aLibPathName <> '' then
317		begin
318	<	result:=false; //assume failure
319	<	if value = '' then
320	<	begin
321	<	// Assume user wants to remove variable.
322	<	if unsetenv(name)=0 then result:=true;
323	<	end
324	<	else
318	>	SetLength(FLibraryList,Length(FLibraryList)+1);
319	>	FLibraryList[Length(FLibraryList)-1] := self;
320	>	end;
321	>	if FFirebirdAPI <> nil then
322	>	begin
323	>	{First try Firebird 3}
324	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
325	>	FFirebirdAPI := nil;
326	>	end;
327	>
328	>	if FFirebirdAPI = nil then
329	>	begin
330	>	{now try Firebird 2.5. Under Unix we need to reload the library in case we
331	>	are to use the embedded library}
332	>	FFirebirdAPI := GetLegacyFirebirdAPI;
333	>	if FFirebirdAPI <> nil then
334		begin
335	<	// Non empty so set the variable
336	<	if setenv(name, value, 1)=0 then result:=true;
335	>	{$IFDEF UNIX}
336	>	FreeFBLibrary;
337	>	{$ENDIF}
338	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
339	>	FFirebirdAPI := nil;
340		end;
341		end;
342	<	{$ENDIF}
342	>	{Note: FFirebirdAPI will be set to nil if the Firebird API fails to load}
343	>	end;
344
345	<	{ TFBClientAPI }
345	>	destructor TFBLibrary.Destroy;
346	>	begin
347	>	FreeFBLibrary;
348	>	FFirebirdAPI := nil;
349	>	inherited Destroy;
350	>	end;
351
352	<	constructor TFBClientAPI.Create;
352	>	class function TFBLibrary.GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
353	>	var i: integer;
354		begin
355	<	inherited Create;
356	<	LoadIBLibrary;
293	<	if (IBLibrary <> NilHandle) then
355	>	Result := nil;
356	>	if aLibPathName <> '' then
357		begin
358	<	SetupEnvironment;
359	<	LoadInterface;
358	>	for i := 0 to Length(FLibraryList) - 1 do
359	>	begin
360	>	if (FLibraryList[i] as TFBLibrary).SameLibrary(aLibPathName) then
361	>	begin
362	>	Result := FLibraryList[i];
363	>	Exit;
364	>	end;
365	>	end;
366	>	Result := Create(aLibPathName);
367		end;
368	<	FirebirdClientAPI := self;
368	>
369		end;
370
371	<	destructor TFBClientAPI.Destroy;
371	>	class procedure TFBLibrary.FreeLibraries;
372	>	var i: integer;
373		begin
374	<	FirebirdClientAPI := nil;
375	<	if FOwnsIBLibrary and (IBLibrary <> NilHandle) then
376	<	UnloadLibrary(IBLibrary);
377	<	IBLibrary := NilHandle;
378	<	inherited Destroy;
374	>	for i := 0 to Length(FLibraryList) - 1 do
375	>	FLibraryList[i] := nil;
376	>	SetLength(FLibraryList,0);
377	>	end;
378	>
379	>	function TFBLibrary.SameLibrary(aLibName: string): boolean;
380	>	begin
381	>	Result := FRequestedLibName = aLibName;
382	>	end;
383	>
384	>	function TFBLibrary.GetHandle: TLibHandle;
385	>	begin
386	>	Result := FIBLibrary;
387	>	end;
388	>
389	>	{ TFBClientAPI }
390	>
391	>	constructor TFBClientAPI.Create(aFBLibrary: TFBLibrary);
392	>	begin
393	>	inherited Create;
394	>	FFBLibrary := aFBLibrary;
395	>	GetTZDataSettings;
396		end;
397
398		procedure TFBClientAPI.IBAlloc(var P; OldSize, NewSize: Integer);
#	Line 312 | Line 400 | var
400		i: Integer;
401		begin
402		ReallocMem(Pointer(P), NewSize);
403	<	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
403	>	for i := OldSize to NewSize - 1 do PAnsiChar(P)[i] := #0;
404		end;
405
406		procedure TFBClientAPI.IBDataBaseError;
#	Line 320 | Line 408 | begin
408		raise EIBInterBaseError.Create(GetStatus);
409		end;
410
411	<	{Under Unixes, if using an embedded server then set up local TMP and LOCK Directories}
324	<
325	<	procedure TFBClientAPI.SetupEnvironment;
326	<	var TmpDir: string;
327	<	begin
328	<	{$IFDEF UNIX}
329	<	TmpDir := GetTempDir +
330	<	DirectorySeparator + 'firebird_' + sysutils.GetEnvironmentVariable('USER');
331	<	if sysutils.GetEnvironmentVariable('FIREBIRD_TMP') = '' then
332	<	begin
333	<	if not DirectoryExists(tmpDir) then
334	<	mkdir(tmpDir);
335	<	SetEnvironmentVariable('FIREBIRD_TMP',PChar(TmpDir));
336	<	end;
337	<	if sysutils.GetEnvironmentVariable('FIREBIRD_LOCK') = '' then
338	<	begin
339	<	if not DirectoryExists(tmpDir) then
340	<	mkdir(tmpDir);
341	<	SetEnvironmentVariable('FIREBIRD_LOCK',PChar(TmpDir));
342	<	end;
343	<	{$ENDIF}
344	<	end;
345	<
346	<	procedure TFBClientAPI.EncodeInteger(aValue: integer; len: integer; buffer: PChar);
411	>	procedure TFBClientAPI.EncodeInteger(aValue: int64; len: integer; buffer: PByte);
412		begin
413		while len > 0 do
414		begin
415	<	buffer^ := char(aValue and $FF);
415	>	buffer^ := aValue and $FF;
416		Inc(buffer);
417		Dec(len);
418		aValue := aValue shr 8;
419		end;
420		end;
421
422	+	(*
423	+	DecodeInteger is Translated from
424	+
425	+	SINT64 API_ROUTINE isc_portable_integer(const UCHAR* ptr, SSHORT length)
426	+	if (!ptr || length <= 0 || length > 8)
427	+	return 0;
428	+
429	+	SINT64 value = 0;
430	+	int shift = 0;
431	+
432	+	while (--length > 0)
433	+	{
434	+	value += ((SINT64) *ptr++) << shift;
435	+	shift += 8;
436	+	}
437	+
438	+	value += ((SINT64)(SCHAR) *ptr) << shift;
439	+
440	+	return value;
441	+	*)
442	+
443	+	function TFBClientAPI.DecodeInteger(bufptr: PByte; len: short): int64;
444	+	var shift: integer;
445	+	begin
446	+	Result := 0;
447	+	if (BufPtr = nil) or (len <= 0) or (len > 8) then
448	+	Exit;
449	+
450	+	shift := 0;
451	+	dec(len);
452	+	while len > 0 do
453	+	begin
454	+	Result := Result + (int64(bufptr^) shl shift);
455	+	Inc(bufptr);
456	+	shift := shift + 8;
457	+	dec(len);
458	+	end;
459	+	Result := Result + (int64(bufptr^) shl shift);
460	+	end;
461	+
462	+	function TFBClientAPI.Int128ToStr(bufptr: PByte; scale: integer): AnsiString;
463	+	begin
464	+	if not HasInt128Support then
465	+	IBError(ibxeNotSupported,[]);
466	+	end;
467	+
468	+	procedure TFBClientAPI.StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
469	+	begin
470	+	if not HasInt128Support then
471	+	IBError(ibxeNotSupported,[]);
472	+	end;
473	+
474	+	procedure TFBClientAPI.SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal;
475	+	bufptr: PByte);
476	+	begin
477	+	if not HasDecFloatSupport then
478	+	IBError(ibxeNotSupported,[]);
479	+	end;
480	+
481	+	function TFBClientAPI.SQLDecFloatDecode(SQLType: cardinal; bufptr: PByte): tBCD;
482	+	begin
483	+	if not HasDecFloatSupport then
484	+	IBError(ibxeNotSupported,[]);
485	+	end;
486	+
487		function TFBClientAPI.IsLibraryLoaded: boolean;
488		begin
489	<	Result := IBLibrary <> NilHandle;
489	>	Result := FFBLibrary.IBLibrary <> NilHandle;
490		end;
491
492	<	function TFBClientAPI.GetProcAddr(ProcName: PChar): Pointer;
492	>	function TFBClientAPI.GetFBLibrary: IFirebirdLibrary;
493		begin
494	<	Result := GetProcAddress(IBLibrary, ProcName);
365	<	if not Assigned(Result) then
366	<	raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
494	>	Result := FFBLibrary;
495		end;
496
497	<	function TFBClientAPI.GetOverrideLibName: string;
497	>	function TFBClientAPI.FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
498		begin
499	<	Result := '';
500	<	if AllowUseOfFBLIB then
501	<	Result := GetEnvironmentVariable('FBLIB');
502	<	if Result = '' then
499	>	{aDate/aTime are in TTimestamp format but aTime is decimilliseconds}
500	>	aDate := aDate - DateDelta;
501	>	if aDate < 0 then
502	>	Result := trunc(aDate) - abs(frac(aTime / (MSecsPerDay*10)))
503	>	else
504	>	Result := trunc(aDate) + abs(frac(aTime / (MSecsPerDay*10)));
505	>	end;
506	>
507	>	{$IFDEF UNIX}
508	>
509	>	procedure TFBClientAPI.GetTZDataSettings;
510	>	var S: TStringList;
511	>	begin
512	>	FLocalTimeOffset := GetLocalTimeOffset;
513	>	{$if declared(Gettzname)}
514	>	FLocalTimeZoneName := Gettzname(tzdaylight);
515	>	{$else}
516	>	FLocalTimeZoneName := tzname[tzdaylight];
517	>	{$ifend}
518	>	FIsDaylightSavingsTime := tzdaylight;
519	>	if FileExists(DefaultTimeZoneFile) then
520		begin
521	<	if assigned(OnGetLibraryName) then
522	<	OnGetLibraryName(Result)
521	>	S := TStringList.Create;
522	>	try
523	>	S.LoadFromFile(DefaultTimeZoneFile);
524	>	if S.Count > 0 then
525	>	FTZDataTimeZoneID := S[0];
526	>	finally
527	>	S.Free;
528	>	end;
529		end;
530		end;
531	+	{$ENDIF}
532
533	<	procedure TFBClientAPI.LoadInterface;
533	>	{$IFDEF WINDOWS}
534	>	procedure TFBClientAPI.GetTZDataSettings;
535	>	var TZInfo: TTimeZoneInformation;
536		begin
537	<	isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
538	<	isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
539	<	isc_interprete := GetProcAddr('isc_interprete'); {do not localize}
540	<	isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
541	<	isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
542	<	isc_free := GetProcAddr('isc_free'); {do not localize}
537	>	FIsDaylightSavingsTime := false;
538	>	{is there any way of working out the default TZData DB time zone ID under Windows?}
539	>	case GetTimeZoneInformation(TZInfo) of
540	>	TIME_ZONE_ID_UNKNOWN:
541	>	begin
542	>	FLocalTimeZoneName := '';
543	>	FLocalTimeOffset := 0;
544	>	end;
545	>	TIME_ZONE_ID_STANDARD:
546	>	begin
547	>	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.StandardName));
548	>	FLocalTimeOffset := TZInfo.Bias;
549	>	end;
550	>	TIME_ZONE_ID_DAYLIGHT:
551	>	begin
552	>	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.DaylightName));
553	>	FLocalTimeOffset := TZInfo.DayLightBias;
554	>	FIsDaylightSavingsTime := true;
555	>	end;
556	>	end;
557		end;
558	+	{$ENDIF}
559
560	<	function TFBClientAPI.GetLibraryName: string;
560	>	function TFBClientAPI.GetProcAddr(ProcName: PAnsiChar): Pointer;
561		begin
562	<	Result := FFBLibraryName;
562	>	Result := nil;
563	>	if assigned(FFBLibrary) and (FFBLibrary.IBLibrary <> NilHandle) then
564	>	Result := GetProcAddress(FFBLibrary.IBLibrary, ProcName);
565	>	if not Assigned(Result) then
566	>	raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
567		end;
568
569	<	function TFBClientAPI.GetCharsetName(CharSetID: integer): string;
569	>	function TFBClientAPI.HasDecFloatSupport: boolean;
570		begin
571	<	Result := '';
399	<	if (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap)) and
400	<	(CharSetMap[CharSetID].CharSetID = CharSetID) then
401	<	begin
402	<	Result := CharSetMap[CharSetID].CharSetName;
403	<	Exit;
404	<	end;
571	>	Result := GetClientMajor >= 4;
572		end;
573
574	<	function TFBClientAPI.CharSetID2CodePage(CharSetID: integer;
408	<	var CodePage: TSystemCodePage): boolean;
574	>	function TFBClientAPI.HasInt128Support: boolean;
575		begin
576	<	Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
411	<	and (CharSetMap[CharSetID].CharSetID = CharSetID);
412	<	if Result then
413	<	begin
414	<	CodePage := CharSetMap[CharSetID].CodePage;
415	<	Result := true;
416	<	Exit;
417	<	end;
576	>	Result := false;
577		end;
578
579	<	function TFBClientAPI.CodePage2CharSetID(CodePage: TSystemCodePage;
421	<	var CharSetID: integer): boolean;
422	<	var i: integer;
579	>	function TFBClientAPI.HasLocalTZDB: boolean;
580		begin
581		Result := false;
425	–	for i := Low(CharSetMap) to High(CharSetMap) do
426	–	if CharSetMap[i].CodePage = CodePage then
427	–	begin
428	–	CharSetID := CharSetMap[i].CharSetID;
429	–	Result := true;
430	–	Exit;
431	–	end;
582		end;
583
584	<	function TFBClientAPI.CharSetName2CharSetID(CharSetName: string;
435	<	var CharSetID: integer): boolean;
436	<	var i: integer;
584	>	function TFBClientAPI.HasExtendedTZSupport: boolean;
585		begin
586		Result := false;
439	–	for i := Low(CharSetMap) to High(CharSetMap) do
440	–	if CompareStr(CharSetMap[i].CharSetName, CharSetName) = 0 then
441	–	begin
442	–	CharSetID := CharSetMap[i].CharSetID;
443	–	Result := true;
444	–	Exit;
445	–	end;
587		end;
588
589	<	function TFBClientAPI.CharSetWidth(CharSetID: integer; var Width: integer
449	<	): boolean;
589	>	function TFBClientAPI.HasTimeZoneSupport: boolean;
590		begin
591	<	Result := (CharSetID >= Low(CharSetMap)) and (CharSetID <= High(CharSetMap))
452	<	and (CharSetMap[CharSetID].CharSetID = CharSetID);
453	<	if Result then
454	<	begin
455	<	Width := CharSetMap[CharSetID].CharSetWidth;
456	<	Result := true;
457	<	Exit;
458	<	end;
591	>	Result := false;
592		end;
593
594	<	const
595	<	IBLocalBufferLength = 512;
596	<	IBBigLocalBufferLength = IBLocalBufferLength * 2;
597	<	IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
594	>	function TFBClientAPI.GetImplementationVersion: AnsiString;
595	>	begin
596	>	Result := Format('%d.%d',[GetClientMajor,GetClientMinor]);
597	>	end;
598	>
599	>	function TFBClientAPI.LoadInterface: boolean;
600	>	begin
601	>	isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
602	>	isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
603	>	fb_shutdown := GetProcAddr('fb_shutdown'); {do not localize}
604	>	Result := true; {don't case if these fail to load}
605	>	end;
606	>
607	>	procedure TFBClientAPI.FBShutdown;
608	>	begin
609	>	if assigned(fb_shutdown) then
610	>	fb_shutdown(0,fb_shutrsn_exit_called);
611	>	end;
612
613		{ TFBStatus }
614
615	<	constructor TFBStatus.Create(aOwner: TFBClientAPI);
615	>	function TFBStatus.GetSQLMessage: Ansistring;
616	>	var local_buffer: array[0..IBHugeLocalBufferLength - 1] of AnsiChar;
617	>	begin
618	>	Result := '';
619	>	if (FOwner <> nil) and assigned(FOwner.isc_sql_interprete) then
620	>	begin
621	>	FOwner.isc_sql_interprete(Getsqlcode, local_buffer, sizeof(local_buffer));
622	>	Result := strpas(local_buffer);
623	>	end;
624	>	end;
625	>
626	>	constructor TFBStatus.Create(aOwner: TFBClientAPI; prefix: AnsiString);
627		begin
628		inherited Create;
629		FOwner := aOwner;
630	<	FIBDataBaseErrorMessages := [ShowSQLMessage, ShowIBMessage];
630	>	FPrefix := prefix;
631	>	FIBDataBaseErrorMessages := [ShowSQLCode, ShowSQLMessage, ShowIBMessage];
632		end;
633
634	<	function TFBStatus.GetIBErrorCode: Long;
634	>	function TFBStatus.GetIBErrorCode: TStatusCode;
635		begin
636		Result := StatusVector^[1];
637		end;
638
639	<	function TFBStatus.Getsqlcode: Long;
639	>	function TFBStatus.Getsqlcode: TStatusCode;
640		begin
641	<	with FOwner do
642	<	Result := isc_sqlcode(PISC_STATUS(StatusVector));
641	>	if (FOwner <> nil) and assigned(FOwner.isc_sqlcode) then
642	>	Result := FOwner.isc_sqlcode(PISC_STATUS(StatusVector))
643	>	else
644	>	Result := -999; {generic SQL Code}
645		end;
646
647	<	function TFBStatus.GetMessage: string;
648	<	var local_buffer: array[0..IBHugeLocalBufferLength - 1] of char;
488	<	IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
489	<	sqlcode: Long;
490	<	psb: PStatusVector;
647	>	function TFBStatus.GetMessage: AnsiString;
648	>	var IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
649		begin
650	<	Result := '';
650	>	Result := FPrefix;
651		IBDataBaseErrorMessages := FIBDataBaseErrorMessages;
494	–	sqlcode := Getsqlcode;
652		if (ShowSQLCode in IBDataBaseErrorMessages) then
653	<	Result := Result + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
653	>	Result := Result + 'SQLCODE: ' + IntToStr(Getsqlcode); {do not localize}
654
655	<	Exclude(IBDataBaseErrorMessages, ShowSQLMessage);
499	<	if (ShowSQLMessage in IBDataBaseErrorMessages) then
655	>	if [ShowSQLMessage, ShowIBMessage]*IBDataBaseErrorMessages <> [] then
656		begin
501	–	with FOwner do
502	–	isc_sql_interprete(sqlcode, local_buffer, IBLocalBufferLength);
657		if (ShowSQLCode in FIBDataBaseErrorMessages) then
658	<	Result := Result + CRLF;
659	<	Result := Result + strpas(local_buffer);
658	>	Result := Result + LineEnding;
659	>	Result := Result + 'Engine Code: ' + IntToStr(GetIBErrorCode) + ' ';
660		end;
661
662	+	if (ShowSQLMessage in IBDataBaseErrorMessages) then
663	+	Result := Result + GetSQLMessage;
664	+
665		if (ShowIBMessage in IBDataBaseErrorMessages) then
666		begin
667	<	if (ShowSQLCode in IBDataBaseErrorMessages) or
668	<	(ShowSQLMessage in IBDataBaseErrorMessages) then
669	<	Result := Result + CRLF;
513	<	psb := StatusVector;
514	<	with FOwner do
515	<	while (isc_interprete(@local_buffer, @psb) > 0) do
516	<	begin
517	<	if (Result <> '') and (Result[Length(Result)] <> LF) then
518	<	Result := Result + CRLF;
519	<	Result := Result + strpas(local_buffer);
520	<	end;
667	>	if ShowSQLMessage in IBDataBaseErrorMessages then
668	>	Result := Result + LineEnding;
669	>	Result := Result + GetIBMessage;
670		end;
671		if (Result <> '') and (Result[Length(Result)] = '.') then
672		Delete(Result, Length(Result), 1);
#	Line 530 | Line 679 | var
679		i: Integer;
680		procedure NextP(i: Integer);
681		begin
682	<	p := PISC_STATUS(PChar(p) + (i * SizeOf(ISC_STATUS)));
682	>	p := PISC_STATUS(PAnsiChar(p) + (i * SizeOf(ISC_STATUS)));
683		end;
684		begin
685		p := PISC_STATUS(StatusVector);
#	Line 556 | Line 705 | end;
705
706		function TFBStatus.GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
707		begin
708	<	EnterCriticalSection(FIBCS);
708	>	EnterCriticalSection(TFBClientAPI.FIBCS);
709		try
710		result := FIBDataBaseErrorMessages;
711		finally
712	<	LeaveCriticalSection(FIBCS);
712	>	LeaveCriticalSection(TFBClientAPI.FIBCS);
713		end;
714		end;
715
716		procedure TFBStatus.SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
717		begin
718	<	EnterCriticalSection(FIBCS);
718	>	EnterCriticalSection(TFBClientAPI.FIBCS);
719		try
720		FIBDataBaseErrorMessages := Value;
721		finally
722	<	LeaveCriticalSection(FIBCS);
722	>	LeaveCriticalSection(TFBClientAPI.FIBCS);
723		end;
724		end;
725	+
726		initialization
727	<	TFBClientAPI.IBLibrary := NilHandle;
728	<	InitCriticalSection(TFBStatus.FIBCS);
727	>	TFBLibrary.FEnvSetupDone := false;
728	>	{$IFNDEF FPC}
729	>	InitializeCriticalSection(TFBClientAPI.FIBCS);
730	>	{$ELSE}
731	>	InitCriticalSection(TFBClientAPI.FIBCS);
732	>	{$ENDIF}
733
734		finalization
735	<	DoneCriticalSection(TFBStatus.FIBCS);
736	<	if TFBClientAPI.IBLibrary <> NilHandle then
737	<	begin
738	<	FreeLibrary(TFBClientAPI.IBLibrary);
739	<	TFBClientAPI.IBLibrary := NilHandle;
740	<	TFBClientAPI.FFBLibraryName := '';
587	<	end;
588	<
735	>	TFBLibrary.FreeLibraries;
736	>	{$IFNDEF FPC}
737	>	DeleteCriticalSection(TFBClientAPI.FIBCS);
738	>	{$ELSE}
739	>	DoneCriticalSection(TFBClientAPI.FIBCS);
740	>	{$ENDIF}
741		end.
742

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