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root/public/ibx/branches/journaling/fbintf/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/journaling/fbintf/client/FBClientAPI.pas (file contents), Revision 362 by tony, Tue Dec 7 13:27:39 2021 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		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;
131	<	function GetMessage: string;
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;
177	<	procedure LoadIBLibrary;
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	>	function FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
182	>	procedure GetTZDataSettings;
183		protected
184	<	FFBLibraryName: string; static;
185	<	FFBLibraryPath: string; static;
186	<	IBLibrary: TLibHandle; static;
187	<	function GetProcAddr(ProcName: PChar): Pointer;
188	<	function GetOverrideLibName: string;
189	<	{$IFDEF UNIX}
190	<	function GetFirebirdLibList: string; virtual; abstract;
191	<	{$ENDIF}
192	<	procedure LoadInterface; virtual;
184	>	FFBLibrary: TFBLibrary;
185	>	function GetProcAddr(ProcName: PAnsiChar): Pointer;
186	>
187	>	protected type
188	>	Tfb_shutdown = function (timeout: uint;
189	>	const reason: int): int;
190	>	{$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;
134	–	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;
140	<	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: PChar);
226	<	function DecodeInteger(bufptr: PChar; len: short): integer; virtual; abstract;
227	<	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PChar); virtual; abstract;
228	<	function SQLDecodeDate(byfptr: PChar): TDateTime; virtual; abstract;
229	<	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PChar); virtual; abstract;
230	<	function SQLDecodeTime(bufptr: PChar): TDateTime;  virtual; abstract;
231	<	procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PChar); virtual; abstract;
232	<	function SQLDecodeDateTime(bufptr: PChar): TDateTime; virtual; abstract;
233	<
225	>	procedure EncodeInteger(aValue: integer; len: integer; buffer: PByte);
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	>	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	<	function GetCharsetName(CharSetID: integer): string;
246	<	function CharSetID2CodePage(CharSetID: integer; var CodePage: TSystemCodePage): boolean;
247	<	function CodePage2CharSetID(CodePage: TSystemCodePage; var CharSetID: integer): boolean;
248	<	function CharSetName2CharSetID(CharSetName: string; var CharSetID: integer): boolean;
165	<	function CharSetWidth(CharSetID: integer; var Width: integer): boolean;
166	<	end;
167	<
168	<	const FirebirdClientAPI: TFBClientAPI = nil;
244	>	function GetFBLibrary: IFirebirdLibrary;
245	>	function GetImplementationVersion: AnsiString;
246	>	function GetClientMajor: integer;  virtual; abstract;
247	>	function GetClientMinor: integer;  virtual; abstract;
248	>	end;
249
250		implementation
251
252	<	uses IBUtils, {$IFDEF Unix} initc, {$ENDIF}
252	>	uses IBUtils, Registry,
253	>	{$IFDEF Unix} unix, initc, dl, {$ENDIF}
254	>	{$IFDEF FPC}
255		{$IFDEF WINDOWS }
256	<	Windows,Registry, WinDirs,
256	>	WinDirs,
257	>	{$ENDIF}
258	>	{$ELSE}
259	>	ShlObj,
260		{$ENDIF}
261		SysUtils;
262
263		{$IFDEF UNIX}
264	<	{$I uloadlibrary.inc}
264	>	{$I 'include/uloadlibrary.inc'}
265		{$ELSE}
266	<	{$I wloadlibrary.inc}
266	>	{$I 'include/wloadlibrary.inc'}
267		{$ENDIF}
268
269	<	type
270	<	TCharsetMap = record
271	<	CharsetID: integer;
272	<	CharSetName: string;
273	<	CharSetWidth: integer;
274	<	CodePage: TSystemCodePage;
269	>
270	>	{ TFBLibrary }
271	>
272	>	function TFBLibrary.GetOverrideLibName: string;
273	>	begin
274	>	Result := FFBLibraryName;
275	>	if (Result = '') and AllowUseOfFBLIB then
276	>	Result := GetEnvironmentVariable('FBLIB');
277	>	if Result = '' then
278	>	begin
279	>	if assigned(OnGetLibraryName) then
280	>	OnGetLibraryName(Result)
281		end;
282	+	end;
283
284	<	const
285	<	CharSetMap: array [0..69] of TCharsetMap = (
286	<	(CharsetID: 0; CharSetName: 'NONE'; CharSetWidth: 1; CodePage: CP_NONE),
287	<	(CharsetID: 1; CharSetName: 'OCTETS'; CharSetWidth: 1; CodePage: CP_NONE),
288	<	(CharsetID: 2; CharSetName: 'ASCII'; CharSetWidth: 1; CodePage: CP_ASCII),
289	<	(CharsetID: 3; CharSetName: 'UNICODE_FSS'; CharSetWidth: 3; CodePage: CP_UTF8),
290	<	(CharsetID: 4; CharSetName: 'UTF8'; CharSetWidth: 4; CodePage: CP_UTF8),
291	<	(CharsetID: 5; CharSetName: 'SJIS_0208'; CharSetWidth: 2; CodePage: 20932),
292	<	(CharsetID: 6; CharSetName: 'EUCJ_0208'; CharSetWidth: 2; CodePage: 20932),
293	<	(CharsetID: 7; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
294	<	(CharsetID: 8; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
295	<	(CharsetID: 9; CharSetName: 'DOS737'; CharSetWidth: 1; CodePage: 737),
296	<	(CharsetID: 10; CharSetName: 'DOS437'; CharSetWidth: 1; CodePage: 437),
297	<	(CharsetID: 11; CharSetName: 'DOS850'; CharSetWidth: 1; CodePage: 850),
298	<	(CharsetID: 12; CharSetName: 'DOS865'; CharSetWidth: 1; CodePage: 865),
299	<	(CharsetID: 13; CharSetName: 'DOS860'; CharSetWidth: 1; CodePage: 860),
300	<	(CharsetID: 14; CharSetName: 'DOS863'; CharSetWidth: 1; CodePage: 863),
301	<	(CharsetID: 15; CharSetName: 'DOS775'; CharSetWidth: 1; CodePage: 775),
302	<	(CharsetID: 16; CharSetName: 'DOS858'; CharSetWidth: 1; CodePage: 858),
303	<	(CharsetID: 17; CharSetName: 'DOS862'; CharSetWidth: 1; CodePage: 862),
304	<	(CharsetID: 18; CharSetName: 'DOS864'; CharSetWidth: 1; CodePage: 864),
305	<	(CharsetID: 19; CharSetName: 'NEXT'; CharSetWidth: 1; CodePage: CP_NONE),
306	<	(CharsetID: 20; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
307	<	(CharsetID: 21; CharSetName: 'ISO8859_1'; CharSetWidth: 1; CodePage: 28591),
308	<	(CharsetID: 22; CharSetName: 'ISO8859_2'; CharSetWidth: 1; CodePage: 28592),
309	<	(CharsetID: 23; CharSetName: 'ISO8859_3'; CharSetWidth: 1; CodePage: 28593),
310	<	(CharsetID: 24; CharSetName: 'Unknown'; CharSetWidth: 0; CodePage: CP_NONE),
311	<	(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.
284	>	procedure TFBLibrary.FreeFBLibrary;
285	>	begin
286	>	(FFirebirdAPI as TFBClientAPI).FBShutdown;
287	>	if FIBLibrary <> NilHandle then
288	>	FreeLibrary(FIBLibrary);
289	>	FIBLibrary := NilHandle;
290	>	FFBLibraryName := '';
291	>	end;
292	>
293	>	function TFBLibrary.GetLibraryName: string;
294	>	begin
295	>	Result := ExtractFileName(FFBLibraryName);
296	>	end;
297	>
298	>	function TFBLibrary.GetFirebirdAPI: IFirebirdAPI;
299	>	begin
300	>	Result := FFirebirdAPI;
301	>	end;
302	>
303	>	constructor TFBLibrary.Create(aLibPathName: string);
304	>	begin
305	>	inherited Create;
306	>	SetupEnvironment;
307	>	FFBLibraryName := aLibPathName;
308	>	FIBLibrary := NilHandle;
309	>	FFirebirdAPI := GetFirebird3API;
310	>	FRequestedLibName := aLibPathName;
311	>	if aLibPathName <> '' then
312		begin
313	<	result:=false; //assume failure
314	<	if value = '' then
315	<	begin
316	<	// Assume user wants to remove variable.
317	<	if unsetenv(name)=0 then result:=true;
318	<	end
319	<	else
313	>	SetLength(FLibraryList,Length(FLibraryList)+1);
314	>	FLibraryList[Length(FLibraryList)-1] := self;
315	>	end;
316	>	if FFirebirdAPI <> nil then
317	>	begin
318	>	{First try Firebird 3}
319	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
320	>	FFirebirdAPI := nil;
321	>	end;
322	>
323	>	if FFirebirdAPI = nil then
324	>	begin
325	>	{now try Firebird 2.5. Under Unix we need to reload the library in case we
326	>	are to use the embedded library}
327	>	FFirebirdAPI := GetLegacyFirebirdAPI;
328	>	if FFirebirdAPI <> nil then
329		begin
330	<	// Non empty so set the variable
331	<	if setenv(name, value, 1)=0 then result:=true;
330	>	{$IFDEF UNIX}
331	>	FreeFBLibrary;
332	>	{$ENDIF}
333	>	if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
334	>	FFirebirdAPI := nil;
335		end;
336		end;
337	<	{$ENDIF}
337	>	{Note: FFirebirdAPI will be set to nil if the Firebird API fails to load}
338	>	end;
339
340	<	{ TFBClientAPI }
340	>	destructor TFBLibrary.Destroy;
341	>	begin
342	>	FreeFBLibrary;
343	>	FFirebirdAPI := nil;
344	>	inherited Destroy;
345	>	end;
346
347	<	constructor TFBClientAPI.Create;
347	>	class function TFBLibrary.GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
348	>	var i: integer;
349		begin
350	<	inherited Create;
351	<	LoadIBLibrary;
293	<	if (IBLibrary <> NilHandle) then
350	>	Result := nil;
351	>	if aLibPathName <> '' then
352		begin
353	<	SetupEnvironment;
354	<	LoadInterface;
353	>	for i := 0 to Length(FLibraryList) - 1 do
354	>	begin
355	>	if (FLibraryList[i] as TFBLibrary).SameLibrary(aLibPathName) then
356	>	begin
357	>	Result := FLibraryList[i];
358	>	Exit;
359	>	end;
360	>	end;
361	>	Result := Create(aLibPathName);
362		end;
363	<	FirebirdClientAPI := self;
363	>
364		end;
365
366	<	destructor TFBClientAPI.Destroy;
366	>	class procedure TFBLibrary.FreeLibraries;
367	>	var i: integer;
368		begin
369	<	FirebirdClientAPI := nil;
370	<	if FOwnsIBLibrary and (IBLibrary <> NilHandle) then
371	<	UnloadLibrary(IBLibrary);
372	<	IBLibrary := NilHandle;
373	<	inherited Destroy;
369	>	for i := 0 to Length(FLibraryList) - 1 do
370	>	FLibraryList[i] := nil;
371	>	SetLength(FLibraryList,0);
372	>	end;
373	>
374	>	function TFBLibrary.SameLibrary(aLibName: string): boolean;
375	>	begin
376	>	Result := FRequestedLibName = aLibName;
377	>	end;
378	>
379	>	function TFBLibrary.GetHandle: TLibHandle;
380	>	begin
381	>	Result := FIBLibrary;
382	>	end;
383	>
384	>	{ TFBClientAPI }
385	>
386	>	constructor TFBClientAPI.Create(aFBLibrary: TFBLibrary);
387	>	begin
388	>	inherited Create;
389	>	FFBLibrary := aFBLibrary;
390	>	GetTZDataSettings;
391		end;
392
393		procedure TFBClientAPI.IBAlloc(var P; OldSize, NewSize: Integer);
#	Line 312 | Line 395 | var
395		i: Integer;
396		begin
397		ReallocMem(Pointer(P), NewSize);
398	<	for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
398	>	for i := OldSize to NewSize - 1 do PAnsiChar(P)[i] := #0;
399		end;
400
401		procedure TFBClientAPI.IBDataBaseError;
#	Line 320 | Line 403 | begin
403		raise EIBInterBaseError.Create(GetStatus);
404		end;
405
406	<	{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);
406	>	procedure TFBClientAPI.EncodeInteger(aValue: integer; len: integer; buffer: PByte);
407		begin
408		while len > 0 do
409		begin
410	<	buffer^ := char(aValue and $FF);
410	>	buffer^ := aValue and $FF;
411		Inc(buffer);
412		Dec(len);
413		aValue := aValue shr 8;
414		end;
415		end;
416
417	+	function TFBClientAPI.DecodeInteger(bufptr: PByte; len: short): int64;
418	+	begin
419	+	Result := isc_portable_integer(bufptr,len);
420	+	end;
421	+
422	+	function TFBClientAPI.Int128ToStr(bufptr: PByte; scale: integer): AnsiString;
423	+	begin
424	+	if not HasInt128Support then
425	+	IBError(ibxeNotSupported,[]);
426	+	end;
427	+
428	+	procedure TFBClientAPI.StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
429	+	begin
430	+	if not HasInt128Support then
431	+	IBError(ibxeNotSupported,[]);
432	+	end;
433	+
434	+	procedure TFBClientAPI.SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal;
435	+	bufptr: PByte);
436	+	begin
437	+	if not HasDecFloatSupport then
438	+	IBError(ibxeNotSupported,[]);
439	+	end;
440	+
441	+	function TFBClientAPI.SQLDecFloatDecode(SQLType: cardinal; bufptr: PByte): tBCD;
442	+	begin
443	+	if not HasDecFloatSupport then
444	+	IBError(ibxeNotSupported,[]);
445	+	end;
446	+
447		function TFBClientAPI.IsLibraryLoaded: boolean;
448		begin
449	<	Result := IBLibrary <> NilHandle;
449	>	Result := FFBLibrary.IBLibrary <> NilHandle;
450		end;
451
452	<	function TFBClientAPI.GetProcAddr(ProcName: PChar): Pointer;
452	>	function TFBClientAPI.GetFBLibrary: IFirebirdLibrary;
453		begin
454	<	Result := GetProcAddress(IBLibrary, ProcName);
365	<	if not Assigned(Result) then
366	<	raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
454	>	Result := FFBLibrary;
455		end;
456
457	<	function TFBClientAPI.GetOverrideLibName: string;
457	>	function TFBClientAPI.FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
458		begin
459	<	Result := '';
460	<	if AllowUseOfFBLIB then
461	<	Result := GetEnvironmentVariable('FBLIB');
462	<	if Result = '' then
459	>	{aDate/aTime are in TTimestamp format but aTime is decimilliseconds}
460	>	aDate := aDate - DateDelta;
461	>	if aDate < 0 then
462	>	Result := trunc(aDate) - abs(frac(aTime / (MSecsPerDay*10)))
463	>	else
464	>	Result := trunc(aDate) + abs(frac(aTime / (MSecsPerDay*10)));
465	>	end;
466	>
467	>	{$IFDEF UNIX}
468	>
469	>	procedure TFBClientAPI.GetTZDataSettings;
470	>	var S: TStringList;
471	>	begin
472	>	FLocalTimeOffset := GetLocalTimeOffset;
473	>	{$if declared(Gettzname)}
474	>	FLocalTimeZoneName := Gettzname(tzdaylight);
475	>	{$else}
476	>	FLocalTimeZoneName := tzname[tzdaylight];
477	>	{$ifend}
478	>	FIsDaylightSavingsTime := tzdaylight;
479	>	if FileExists(DefaultTimeZoneFile) then
480		begin
481	<	if assigned(OnGetLibraryName) then
482	<	OnGetLibraryName(Result)
481	>	S := TStringList.Create;
482	>	try
483	>	S.LoadFromFile(DefaultTimeZoneFile);
484	>	if S.Count > 0 then
485	>	FTZDataTimeZoneID := S[0];
486	>	finally
487	>	S.Free;
488	>	end;
489		end;
490		end;
491	+	{$ENDIF}
492
493	<	procedure TFBClientAPI.LoadInterface;
493	>	{$IFDEF WINDOWS}
494	>	procedure TFBClientAPI.GetTZDataSettings;
495	>	var TZInfo: TTimeZoneInformation;
496		begin
497	<	isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
498	<	isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
499	<	isc_interprete := GetProcAddr('isc_interprete'); {do not localize}
500	<	isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
501	<	isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
502	<	isc_free := GetProcAddr('isc_free'); {do not localize}
497	>	FIsDaylightSavingsTime := false;
498	>	{is there any way of working out the default TZData DB time zone ID under Windows?}
499	>	case GetTimeZoneInformation(TZInfo) of
500	>	TIME_ZONE_ID_UNKNOWN:
501	>	begin
502	>	FLocalTimeZoneName := '';
503	>	FLocalTimeOffset := 0;
504	>	end;
505	>	TIME_ZONE_ID_STANDARD:
506	>	begin
507	>	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.StandardName));
508	>	FLocalTimeOffset := TZInfo.Bias;
509	>	end;
510	>	TIME_ZONE_ID_DAYLIGHT:
511	>	begin
512	>	FLocalTimeZoneName := strpas(PWideChar(@TZInfo.DaylightName));
513	>	FLocalTimeOffset := TZInfo.DayLightBias;
514	>	FIsDaylightSavingsTime := true;
515	>	end;
516	>	end;
517		end;
518	+	{$ENDIF}
519
520	<	function TFBClientAPI.GetLibraryName: string;
520	>	function TFBClientAPI.GetProcAddr(ProcName: PAnsiChar): Pointer;
521		begin
522	<	Result := FFBLibraryName;
522	>	Result := nil;
523	>	if assigned(FFBLibrary) and (FFBLibrary.IBLibrary <> NilHandle) then
524	>	Result := GetProcAddress(FFBLibrary.IBLibrary, ProcName);
525	>	if not Assigned(Result) then
526	>	raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
527		end;
528
529	<	function TFBClientAPI.GetCharsetName(CharSetID: integer): string;
529	>	function TFBClientAPI.HasDecFloatSupport: boolean;
530		begin
531	<	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;
531	>	Result := GetClientMajor >= 4;
532		end;
533
534	<	function TFBClientAPI.CharSetID2CodePage(CharSetID: integer;
408	<	var CodePage: TSystemCodePage): boolean;
534	>	function TFBClientAPI.HasInt128Support: boolean;
535		begin
536	<	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;
536	>	Result := false;
537		end;
538
539	<	function TFBClientAPI.CodePage2CharSetID(CodePage: TSystemCodePage;
421	<	var CharSetID: integer): boolean;
422	<	var i: integer;
539	>	function TFBClientAPI.HasLocalTZDB: boolean;
540		begin
541		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;
542		end;
543
544	<	function TFBClientAPI.CharSetName2CharSetID(CharSetName: string;
435	<	var CharSetID: integer): boolean;
436	<	var i: integer;
544	>	function TFBClientAPI.HasExtendedTZSupport: boolean;
545		begin
546		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;
547		end;
548
549	<	function TFBClientAPI.CharSetWidth(CharSetID: integer; var Width: integer
449	<	): boolean;
549	>	function TFBClientAPI.HasTimeZoneSupport: boolean;
550		begin
551	<	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;
551	>	Result := false;
552		end;
553
554	<	const
555	<	IBLocalBufferLength = 512;
556	<	IBBigLocalBufferLength = IBLocalBufferLength * 2;
557	<	IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
554	>	function TFBClientAPI.GetImplementationVersion: AnsiString;
555	>	begin
556	>	Result := Format('%d.%d',[GetClientMajor,GetClientMinor]);
557	>	end;
558	>
559	>	function TFBClientAPI.LoadInterface: boolean;
560	>	begin
561	>	isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
562	>	isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
563	>	isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
564	>	isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
565	>	isc_free := GetProcAddr('isc_free'); {do not localize}
566	>	isc_portable_integer := GetProcAddr('isc_portable_integer'); {do not localize}
567	>	fb_shutdown := GetProcAddr('fb_shutdown'); {do not localize}
568	>	Result := assigned(isc_free);
569	>	end;
570	>
571	>	procedure TFBClientAPI.FBShutdown;
572	>	begin
573	>	if assigned(fb_shutdown) then
574	>	fb_shutdown(0,fb_shutrsn_exit_called);
575	>	end;
576
577		{ TFBStatus }
578
579	<	constructor TFBStatus.Create(aOwner: TFBClientAPI);
579	>	constructor TFBStatus.Create(aOwner: TFBClientAPI; prefix: AnsiString);
580		begin
581		inherited Create;
582		FOwner := aOwner;
583	<	FIBDataBaseErrorMessages := [ShowSQLMessage, ShowIBMessage];
583	>	FPrefix := prefix;
584	>	FIBDataBaseErrorMessages := [ShowSQLCode, ShowSQLMessage, ShowIBMessage];
585		end;
586
587	<	function TFBStatus.GetIBErrorCode: Long;
587	>	function TFBStatus.GetIBErrorCode: TStatusCode;
588		begin
589		Result := StatusVector^[1];
590		end;
591
592	<	function TFBStatus.Getsqlcode: Long;
592	>	function TFBStatus.Getsqlcode: TStatusCode;
593		begin
594		with FOwner do
595		Result := isc_sqlcode(PISC_STATUS(StatusVector));
596		end;
597
598	<	function TFBStatus.GetMessage: string;
599	<	var local_buffer: array[0..IBHugeLocalBufferLength - 1] of char;
598	>	function TFBStatus.GetMessage: AnsiString;
599	>	var local_buffer: array[0..IBHugeLocalBufferLength - 1] of AnsiChar;
600		IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
601		sqlcode: Long;
490	–	psb: PStatusVector;
602		begin
603	<	Result := '';
603	>	Result := FPrefix;
604		IBDataBaseErrorMessages := FIBDataBaseErrorMessages;
605		sqlcode := Getsqlcode;
606		if (ShowSQLCode in IBDataBaseErrorMessages) then
607		Result := Result + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
608
498	–	Exclude(IBDataBaseErrorMessages, ShowSQLMessage);
609		if (ShowSQLMessage in IBDataBaseErrorMessages) then
610		begin
611		with FOwner do
612	<	isc_sql_interprete(sqlcode, local_buffer, IBLocalBufferLength);
612	>	isc_sql_interprete(sqlcode, local_buffer, sizeof(local_buffer));
613		if (ShowSQLCode in FIBDataBaseErrorMessages) then
614	<	Result := Result + CRLF;
615	<	Result := Result + strpas(local_buffer);
614	>	Result := Result + LineEnding;
615	>	Result := Result + 'Engine Code: ' + IntToStr(GetIBErrorCode) + ' ' + strpas(local_buffer);
616		end;
617
618		if (ShowIBMessage in IBDataBaseErrorMessages) then
619		begin
620		if (ShowSQLCode in IBDataBaseErrorMessages) or
621		(ShowSQLMessage in IBDataBaseErrorMessages) then
622	<	Result := Result + CRLF;
623	<	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;
622	>	Result := Result + LineEnding;
623	>	Result := Result + FOwner.FormatStatus(self);
624		end;
625		if (Result <> '') and (Result[Length(Result)] = '.') then
626		Delete(Result, Length(Result), 1);
#	Line 530 | Line 633 | var
633		i: Integer;
634		procedure NextP(i: Integer);
635		begin
636	<	p := PISC_STATUS(PChar(p) + (i * SizeOf(ISC_STATUS)));
636	>	p := PISC_STATUS(PAnsiChar(p) + (i * SizeOf(ISC_STATUS)));
637		end;
638		begin
639		p := PISC_STATUS(StatusVector);
#	Line 556 | Line 659 | end;
659
660		function TFBStatus.GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
661		begin
662	<	EnterCriticalSection(FIBCS);
662	>	EnterCriticalSection(TFBClientAPI.FIBCS);
663		try
664		result := FIBDataBaseErrorMessages;
665		finally
666	<	LeaveCriticalSection(FIBCS);
666	>	LeaveCriticalSection(TFBClientAPI.FIBCS);
667		end;
668		end;
669
670		procedure TFBStatus.SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
671		begin
672	<	EnterCriticalSection(FIBCS);
672	>	EnterCriticalSection(TFBClientAPI.FIBCS);
673		try
674		FIBDataBaseErrorMessages := Value;
675		finally
676	<	LeaveCriticalSection(FIBCS);
676	>	LeaveCriticalSection(TFBClientAPI.FIBCS);
677		end;
678		end;
679	+
680		initialization
681	<	TFBClientAPI.IBLibrary := NilHandle;
682	<	InitCriticalSection(TFBStatus.FIBCS);
681	>	TFBLibrary.FEnvSetupDone := false;
682	>	{$IFNDEF FPC}
683	>	InitializeCriticalSection(TFBClientAPI.FIBCS);
684	>	{$ELSE}
685	>	InitCriticalSection(TFBClientAPI.FIBCS);
686	>	{$ENDIF}
687
688		finalization
689	<	DoneCriticalSection(TFBStatus.FIBCS);
690	<	if TFBClientAPI.IBLibrary <> NilHandle then
691	<	begin
692	<	FreeLibrary(TFBClientAPI.IBLibrary);
693	<	TFBClientAPI.IBLibrary := NilHandle;
694	<	TFBClientAPI.FFBLibraryName := '';
587	<	end;
588	<
689	>	TFBLibrary.FreeLibraries;
690	>	{$IFNDEF FPC}
691	>	DeleteCriticalSection(TFBClientAPI.FIBCS);
692	>	{$ELSE}
693	>	DoneCriticalSection(TFBClientAPI.FIBCS);
694	>	{$ENDIF}
695		end.
696

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