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(*
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* Firebird Interface (fbintf). The fbintf components provide a set of
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* Pascal language bindings for the Firebird API. Although predominantly
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* a new development they include source code taken from IBX and may be
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* considered a derived product. This software thus also includes the copyright
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* notice and license conditions from IBX.
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*
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* Except for those parts dervied from IBX, contents of this file are subject
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* to the Initial Developer's Public License Version 1.0 (the "License"); you
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* may not use this file except in compliance with the License. You may obtain a
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* copy of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2016 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{ IBX For Lazarus (Firebird Express) }
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
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{ Portions created by MWA Software are copyright McCallum Whyman }
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{ Associates Ltd 2011 - 2015 }
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{ }
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{************************************************************************}
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unit FBClientAPI;
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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{$IFDEF FPC}
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{$mode delphi}
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{$codepage UTF8}
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{$interfaces COM}
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{$ENDIF}
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interface
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uses
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Classes,
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{$IFDEF WINDOWS}Windows, {$ENDIF}
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{$IFDEF FPC} Dynlibs, {$ENDIF}
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IB, IBHeader, FBActivityMonitor, FBMessages, IBExternals, FmtBCD;
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{For Linux see result of GetFirebirdLibListruntime/nongui/winipc.inc method}
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{$IFDEF DARWIN}
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const
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FIREBIRD_SO2 = 'libfbclient.dylib';
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{$ENDIF}
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{$IFDEF WINDOWS}
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const
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IBASE_DLL = 'gds32.dll';
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FIREBIRD_CLIENT = 'fbclient.dll'; {do not localize}
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FIREBIRD_EMBEDDED = 'fbembed.dll';
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{$ENDIF}
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const
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{fb_shutdown reasons}
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fb_shutrsn_svc_stopped = -1;
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fb_shutrsn_no_connection = -2;
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fb_shutrsn_app_stopped = -3;
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fb_shutrsn_signal = -5;
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fb_shutrsn_services = -6;
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fb_shutrsn_exit_called = -7;
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const
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DefaultTimeZoneFile = '/etc/timezone';
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const
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IBLocalBufferLength = 512;
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IBBigLocalBufferLength = IBLocalBufferLength * 2;
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IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
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type
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TStatusVector = array[0..19] of NativeInt;
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PStatusVector = ^TStatusVector;
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TFBClientAPI = class;
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{ TFBStatus }
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TFBStatus = class(TFBInterfacedObject)
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private
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FIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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FPrefix: AnsiString;
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protected
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FOwner: TFBClientAPI;
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public
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constructor Create(aOwner: TFBClientAPI; prefix: AnsiString='');
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function StatusVector: PStatusVector; virtual; abstract;
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{IStatus}
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function GetIBErrorCode: TStatusCode;
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function Getsqlcode: TStatusCode;
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function GetMessage: AnsiString;
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function CheckStatusVector(ErrorCodes: array of TFBStatusCode): Boolean;
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function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
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end;
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{ TFBLibrary }
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TFBLibrary = class(TFBInterfacedObject,IFirebirdLibrary)
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private
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class var FEnvSetupDone: boolean;
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class var FLibraryList: array of IFirebirdLibrary;
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private
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FFirebirdAPI: IFirebirdAPI;
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FRequestedLibName: string;
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function LoadIBLibrary: boolean;
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protected
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FFBLibraryName: string;
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FIBLibrary: TLibHandle;
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procedure FreeFBLibrary;
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function GetOverrideLibName: string;
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class procedure SetupEnvironment;
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protected
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function GetFirebird3API: IFirebirdAPI; virtual; abstract;
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function GetLegacyFirebirdAPI: IFirebirdAPI; virtual; abstract;
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public
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constructor Create(aLibPathName: string='');
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destructor Destroy; override;
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class function GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
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class procedure FreeLibraries;
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function SameLibrary(aLibName: string): boolean;
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public
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{IFirebirdLibrary}
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function GetHandle: TLibHandle;
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function GetLibraryName: string;
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function GetLibraryFilePath: string;
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function GetFirebirdAPI: IFirebirdAPI;
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property IBLibrary: TLibHandle read FIBLibrary;
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end;
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{ TFBClientAPI }
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TFBClientAPI = class(TFBInterfacedObject)
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private
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FLocalTimeZoneName: AnsiString; {Informal Time Zone Name from tzname e.g. GMT or BST}
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FTZDataTimeZoneID: AnsiString; {TZData DB ID e.g. Europe/London}
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FLocalTimeOffset: integer;
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FIsDaylightSavingsTime: boolean;
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class var FIBCS: TRTLCriticalSection;
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function FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
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procedure GetTZDataSettings;
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protected
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FFBLibrary: TFBLibrary;
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function GetProcAddr(ProcName: PAnsiChar): Pointer;
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protected type
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Tfb_shutdown = function (timeout: uint;
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const reason: int): int;
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{$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
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protected
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{FB Shutdown API}
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fb_shutdown: Tfb_shutdown;
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public
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{Taken from legacy API}
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isc_sqlcode: Tisc_sqlcode;
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isc_sql_interprete: Tisc_sql_interprete;
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isc_event_counts: Tisc_event_counts;
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isc_event_block: Tisc_event_block;
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isc_free: Tisc_free;
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isc_portable_integer: Tisc_portable_integer;
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constructor Create(aFBLibrary: TFBLibrary);
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procedure IBAlloc(var P; OldSize, NewSize: Integer);
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procedure IBDataBaseError;
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function LoadInterface: boolean; virtual;
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procedure FBShutdown; virtual;
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function GetAPI: IFirebirdAPI; virtual; abstract;
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{$IFDEF UNIX}
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function GetFirebirdLibList: string; virtual; abstract;
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{$ENDIF}
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function HasDecFloatSupport: boolean;
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function HasInt128Support: boolean; virtual;
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function HasLocalTZDB: boolean; virtual;
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function HasExtendedTZSupport: boolean; virtual;
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function HasTimeZoneSupport: boolean; virtual;
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public
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property LocalTimeZoneName: AnsiString read FLocalTimeZoneName;
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property TZDataTimeZoneID: AnsiString read FTZDataTimeZoneID;
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property LocalTimeOffset: integer read FLocalTimeOffset;
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public
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{Encode/Decode}
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procedure EncodeInteger(aValue: integer; len: integer; buffer: PByte);
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function DecodeInteger(bufptr: PByte; len: short): int64;
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procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte); virtual; abstract;
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function SQLDecodeDate(byfptr: PByte): TDateTime; virtual; abstract;
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procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte); virtual; abstract;
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function SQLDecodeTime(bufptr: PByte): TDateTime; virtual; abstract;
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procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); virtual; abstract;
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function SQLDecodeDateTime(bufptr: PByte): TDateTime; virtual; abstract;
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function FormatStatus(Status: TFBStatus): AnsiString; virtual; abstract;
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function Int128ToStr(bufptr: PByte; scale: integer): AnsiString; virtual;
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procedure StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
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virtual;
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procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte); virtual;
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function SQLDecFloatDecode(SQLType: cardinal; bufptr: PByte): tBCD; virtual;
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{IFirebirdAPI}
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function GetStatus: IStatus; virtual; abstract;
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function IsLibraryLoaded: boolean;
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function IsEmbeddedServer: boolean; virtual; abstract;
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function GetFBLibrary: IFirebirdLibrary;
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function GetImplementationVersion: AnsiString;
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function GetClientMajor: integer; virtual; abstract;
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function GetClientMinor: integer; virtual; abstract;
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end;
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implementation
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uses IBUtils, Registry,
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{$IFDEF Unix} unix, initc, dl, {$ENDIF}
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{$IFDEF FPC}
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{$IFDEF WINDOWS }
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WinDirs,
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{$ENDIF}
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{$ELSE}
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ShlObj,
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{$ENDIF}
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SysUtils;
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262 |
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{$IFDEF UNIX}
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{$I 'include/uloadlibrary.inc'}
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{$ELSE}
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{$I 'include/wloadlibrary.inc'}
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{$ENDIF}
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269 |
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{ TFBLibrary }
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function TFBLibrary.GetOverrideLibName: string;
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begin
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Result := FFBLibraryName;
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if (Result = '') and AllowUseOfFBLIB then
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Result := GetEnvironmentVariable('FBLIB');
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if Result = '' then
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begin
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if assigned(OnGetLibraryName) then
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OnGetLibraryName(Result)
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end;
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end;
|
283 |
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284 |
procedure TFBLibrary.FreeFBLibrary;
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begin
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(FFirebirdAPI as TFBClientAPI).FBShutdown;
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if FIBLibrary <> NilHandle then
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FreeLibrary(FIBLibrary);
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289 |
FIBLibrary := NilHandle;
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290 |
FFBLibraryName := '';
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291 |
end;
|
292 |
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293 |
function TFBLibrary.GetLibraryName: string;
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begin
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295 |
Result := ExtractFileName(FFBLibraryName);
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296 |
end;
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297 |
|
298 |
function TFBLibrary.GetFirebirdAPI: IFirebirdAPI;
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299 |
begin
|
300 |
Result := FFirebirdAPI;
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end;
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302 |
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constructor TFBLibrary.Create(aLibPathName: string);
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begin
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inherited Create;
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SetupEnvironment;
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FFBLibraryName := aLibPathName;
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FIBLibrary := NilHandle;
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FFirebirdAPI := GetFirebird3API;
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FRequestedLibName := aLibPathName;
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311 |
if aLibPathName <> '' then
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312 |
begin
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313 |
SetLength(FLibraryList,Length(FLibraryList)+1);
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FLibraryList[Length(FLibraryList)-1] := self;
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315 |
end;
|
316 |
if FFirebirdAPI <> nil then
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317 |
begin
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318 |
{First try Firebird 3}
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319 |
if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
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320 |
FFirebirdAPI := nil;
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321 |
end;
|
322 |
|
323 |
if FFirebirdAPI = nil then
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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 |
{$IFDEF UNIX}
|
331 |
FreeFBLibrary;
|
332 |
{$ENDIF}
|
333 |
if not LoadIBLibrary or not (FFirebirdAPI as TFBClientAPI).LoadInterface then
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334 |
FFirebirdAPI := nil;
|
335 |
end;
|
336 |
end;
|
337 |
{Note: FFirebirdAPI will be set to nil if the Firebird API fails to load}
|
338 |
end;
|
339 |
|
340 |
destructor TFBLibrary.Destroy;
|
341 |
begin
|
342 |
FreeFBLibrary;
|
343 |
FFirebirdAPI := nil;
|
344 |
inherited Destroy;
|
345 |
end;
|
346 |
|
347 |
class function TFBLibrary.GetFBLibrary(aLibPathName: string): IFirebirdLibrary;
|
348 |
var i: integer;
|
349 |
begin
|
350 |
Result := nil;
|
351 |
if aLibPathName <> '' then
|
352 |
begin
|
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 |
|
364 |
end;
|
365 |
|
366 |
class procedure TFBLibrary.FreeLibraries;
|
367 |
var i: integer;
|
368 |
begin
|
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);
|
394 |
var
|
395 |
i: Integer;
|
396 |
begin
|
397 |
ReallocMem(Pointer(P), NewSize);
|
398 |
for i := OldSize to NewSize - 1 do PAnsiChar(P)[i] := #0;
|
399 |
end;
|
400 |
|
401 |
procedure TFBClientAPI.IBDataBaseError;
|
402 |
begin
|
403 |
raise EIBInterBaseError.Create(GetStatus);
|
404 |
end;
|
405 |
|
406 |
procedure TFBClientAPI.EncodeInteger(aValue: integer; len: integer; buffer: PByte);
|
407 |
begin
|
408 |
while len > 0 do
|
409 |
begin
|
410 |
buffer^ := aValue and $FF;
|
411 |
Inc(buffer);
|
412 |
Dec(len);
|
413 |
aValue := aValue shr 8;
|
414 |
end;
|
415 |
end;
|
416 |
|
417 |
function TFBClientAPI.DecodeInteger(bufptr: PByte; len: short): int64;
|
418 |
begin
|
419 |
Result := isc_portable_integer(bufptr,len);
|
420 |
end;
|
421 |
|
422 |
function TFBClientAPI.Int128ToStr(bufptr: PByte; scale: integer): AnsiString;
|
423 |
begin
|
424 |
if not HasInt128Support then
|
425 |
IBError(ibxeNotSupported,[]);
|
426 |
end;
|
427 |
|
428 |
procedure TFBClientAPI.StrToInt128(scale: integer; aValue: AnsiString; bufptr: PByte);
|
429 |
begin
|
430 |
if not HasInt128Support then
|
431 |
IBError(ibxeNotSupported,[]);
|
432 |
end;
|
433 |
|
434 |
procedure TFBClientAPI.SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal;
|
435 |
bufptr: PByte);
|
436 |
begin
|
437 |
if not HasDecFloatSupport then
|
438 |
IBError(ibxeNotSupported,[]);
|
439 |
end;
|
440 |
|
441 |
function TFBClientAPI.SQLDecFloatDecode(SQLType: cardinal; bufptr: PByte): tBCD;
|
442 |
begin
|
443 |
if not HasDecFloatSupport then
|
444 |
IBError(ibxeNotSupported,[]);
|
445 |
end;
|
446 |
|
447 |
function TFBClientAPI.IsLibraryLoaded: boolean;
|
448 |
begin
|
449 |
Result := FFBLibrary.IBLibrary <> NilHandle;
|
450 |
end;
|
451 |
|
452 |
function TFBClientAPI.GetFBLibrary: IFirebirdLibrary;
|
453 |
begin
|
454 |
Result := FFBLibrary;
|
455 |
end;
|
456 |
|
457 |
function TFBClientAPI.FBTimeStampToDateTime(aDate, aTime: longint): TDateTime;
|
458 |
begin
|
459 |
{aDate/aTime are in TTimestamp format but aTime is decimilliseconds}
|
460 |
aDate := aDate - DateDelta;
|
461 |
if aDate < 0 then
|
462 |
Result := trunc(aDate) - abs(frac(aTime / (MSecsPerDay*10)))
|
463 |
else
|
464 |
Result := trunc(aDate) + abs(frac(aTime / (MSecsPerDay*10)));
|
465 |
end;
|
466 |
|
467 |
{$IFDEF UNIX}
|
468 |
procedure TFBClientAPI.GetTZDataSettings;
|
469 |
var S: TStringList;
|
470 |
begin
|
471 |
FLocalTimeOffset := GetLocalTimeOffset;
|
472 |
FLocalTimeZoneName := strpas(tzname[tzdaylight]);
|
473 |
FIsDaylightSavingsTime := tzdaylight;
|
474 |
if FileExists(DefaultTimeZoneFile) then
|
475 |
begin
|
476 |
S := TStringList.Create;
|
477 |
try
|
478 |
S.LoadFromFile(DefaultTimeZoneFile);
|
479 |
if S.Count > 0 then
|
480 |
FTZDataTimeZoneID := S[0];
|
481 |
finally
|
482 |
S.Free;
|
483 |
end;
|
484 |
end;
|
485 |
end;
|
486 |
{$ENDIF}
|
487 |
|
488 |
{$IFDEF WINDOWS}
|
489 |
procedure TFBClientAPI.GetTZDataSettings;
|
490 |
var TZInfo: TTimeZoneInformation;
|
491 |
begin
|
492 |
FIsDaylightSavingsTime := false;
|
493 |
{is there any way of working out the default TZData DB time zone ID under Windows?}
|
494 |
case GetTimeZoneInformation(TZInfo) of
|
495 |
TIME_ZONE_ID_UNKNOWN:
|
496 |
begin
|
497 |
FLocalTimeZoneName := '';
|
498 |
FLocalTimeOffset := 0;
|
499 |
end;
|
500 |
TIME_ZONE_ID_STANDARD:
|
501 |
begin
|
502 |
FLocalTimeZoneName := strpas(PWideChar(@TZInfo.StandardName));
|
503 |
FLocalTimeOffset := TZInfo.Bias;
|
504 |
end;
|
505 |
TIME_ZONE_ID_DAYLIGHT:
|
506 |
begin
|
507 |
FLocalTimeZoneName := strpas(PWideChar(@TZInfo.DaylightName));
|
508 |
FLocalTimeOffset := TZInfo.DayLightBias;
|
509 |
FIsDaylightSavingsTime := true;
|
510 |
end;
|
511 |
end;
|
512 |
end;
|
513 |
{$ENDIF}
|
514 |
|
515 |
function TFBClientAPI.GetProcAddr(ProcName: PAnsiChar): Pointer;
|
516 |
begin
|
517 |
Result := nil;
|
518 |
if assigned(FFBLibrary) and (FFBLibrary.IBLibrary <> NilHandle) then
|
519 |
Result := GetProcAddress(FFBLibrary.IBLibrary, ProcName);
|
520 |
if not Assigned(Result) then
|
521 |
raise Exception.CreateFmt(SFirebirdAPIFuncNotFound,[ProcName]);
|
522 |
end;
|
523 |
|
524 |
function TFBClientAPI.HasDecFloatSupport: boolean;
|
525 |
begin
|
526 |
Result := GetClientMajor >= 4;
|
527 |
end;
|
528 |
|
529 |
function TFBClientAPI.HasInt128Support: boolean;
|
530 |
begin
|
531 |
Result := false;
|
532 |
end;
|
533 |
|
534 |
function TFBClientAPI.HasLocalTZDB: boolean;
|
535 |
begin
|
536 |
Result := false;
|
537 |
end;
|
538 |
|
539 |
function TFBClientAPI.HasExtendedTZSupport: boolean;
|
540 |
begin
|
541 |
Result := false;
|
542 |
end;
|
543 |
|
544 |
function TFBClientAPI.HasTimeZoneSupport: boolean;
|
545 |
begin
|
546 |
Result := false;
|
547 |
end;
|
548 |
|
549 |
function TFBClientAPI.GetImplementationVersion: AnsiString;
|
550 |
begin
|
551 |
Result := Format('%d.%d',[GetClientMajor,GetClientMinor]);
|
552 |
end;
|
553 |
|
554 |
function TFBClientAPI.LoadInterface: boolean;
|
555 |
begin
|
556 |
isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
|
557 |
isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
|
558 |
isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
|
559 |
isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
|
560 |
isc_free := GetProcAddr('isc_free'); {do not localize}
|
561 |
isc_portable_integer := GetProcAddr('isc_portable_integer'); {do not localize}
|
562 |
fb_shutdown := GetProcAddr('fb_shutdown'); {do not localize}
|
563 |
Result := assigned(isc_free);
|
564 |
end;
|
565 |
|
566 |
procedure TFBClientAPI.FBShutdown;
|
567 |
begin
|
568 |
if assigned(fb_shutdown) then
|
569 |
fb_shutdown(0,fb_shutrsn_exit_called);
|
570 |
end;
|
571 |
|
572 |
{ TFBStatus }
|
573 |
|
574 |
constructor TFBStatus.Create(aOwner: TFBClientAPI; prefix: AnsiString);
|
575 |
begin
|
576 |
inherited Create;
|
577 |
FOwner := aOwner;
|
578 |
FPrefix := prefix;
|
579 |
FIBDataBaseErrorMessages := [ShowSQLCode, ShowSQLMessage, ShowIBMessage];
|
580 |
end;
|
581 |
|
582 |
function TFBStatus.GetIBErrorCode: TStatusCode;
|
583 |
begin
|
584 |
Result := StatusVector^[1];
|
585 |
end;
|
586 |
|
587 |
function TFBStatus.Getsqlcode: TStatusCode;
|
588 |
begin
|
589 |
with FOwner do
|
590 |
Result := isc_sqlcode(PISC_STATUS(StatusVector));
|
591 |
end;
|
592 |
|
593 |
function TFBStatus.GetMessage: AnsiString;
|
594 |
var local_buffer: array[0..IBHugeLocalBufferLength - 1] of AnsiChar;
|
595 |
IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
596 |
sqlcode: Long;
|
597 |
begin
|
598 |
Result := FPrefix;
|
599 |
IBDataBaseErrorMessages := FIBDataBaseErrorMessages;
|
600 |
sqlcode := Getsqlcode;
|
601 |
if (ShowSQLCode in IBDataBaseErrorMessages) then
|
602 |
Result := Result + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
|
603 |
|
604 |
if (ShowSQLMessage in IBDataBaseErrorMessages) then
|
605 |
begin
|
606 |
with FOwner do
|
607 |
isc_sql_interprete(sqlcode, local_buffer, sizeof(local_buffer));
|
608 |
if (ShowSQLCode in FIBDataBaseErrorMessages) then
|
609 |
Result := Result + LineEnding;
|
610 |
Result := Result + 'Engine Code: ' + IntToStr(GetIBErrorCode) + ' ' + strpas(local_buffer);
|
611 |
end;
|
612 |
|
613 |
if (ShowIBMessage in IBDataBaseErrorMessages) then
|
614 |
begin
|
615 |
if (ShowSQLCode in IBDataBaseErrorMessages) or
|
616 |
(ShowSQLMessage in IBDataBaseErrorMessages) then
|
617 |
Result := Result + LineEnding;
|
618 |
Result := Result + FOwner.FormatStatus(self);
|
619 |
end;
|
620 |
if (Result <> '') and (Result[Length(Result)] = '.') then
|
621 |
Delete(Result, Length(Result), 1);
|
622 |
end;
|
623 |
|
624 |
function TFBStatus.CheckStatusVector(ErrorCodes: array of TFBStatusCode
|
625 |
): Boolean;
|
626 |
var
|
627 |
p: PISC_STATUS;
|
628 |
i: Integer;
|
629 |
procedure NextP(i: Integer);
|
630 |
begin
|
631 |
p := PISC_STATUS(PAnsiChar(p) + (i * SizeOf(ISC_STATUS)));
|
632 |
end;
|
633 |
begin
|
634 |
p := PISC_STATUS(StatusVector);
|
635 |
result := False;
|
636 |
while (p^ <> 0) and (not result) do
|
637 |
case p^ of
|
638 |
3: NextP(3);
|
639 |
1, 4:
|
640 |
begin
|
641 |
NextP(1);
|
642 |
i := 0;
|
643 |
while (i <= High(ErrorCodes)) and (not result) do
|
644 |
begin
|
645 |
result := p^ = ErrorCodes[i];
|
646 |
Inc(i);
|
647 |
end;
|
648 |
NextP(1);
|
649 |
end;
|
650 |
else
|
651 |
NextP(2);
|
652 |
end;
|
653 |
end;
|
654 |
|
655 |
function TFBStatus.GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
656 |
begin
|
657 |
EnterCriticalSection(TFBClientAPI.FIBCS);
|
658 |
try
|
659 |
result := FIBDataBaseErrorMessages;
|
660 |
finally
|
661 |
LeaveCriticalSection(TFBClientAPI.FIBCS);
|
662 |
end;
|
663 |
end;
|
664 |
|
665 |
procedure TFBStatus.SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
|
666 |
begin
|
667 |
EnterCriticalSection(TFBClientAPI.FIBCS);
|
668 |
try
|
669 |
FIBDataBaseErrorMessages := Value;
|
670 |
finally
|
671 |
LeaveCriticalSection(TFBClientAPI.FIBCS);
|
672 |
end;
|
673 |
end;
|
674 |
|
675 |
initialization
|
676 |
TFBLibrary.FEnvSetupDone := false;
|
677 |
{$IFNDEF FPC}
|
678 |
InitializeCriticalSection(TFBClientAPI.FIBCS);
|
679 |
{$ELSE}
|
680 |
InitCriticalSection(TFBClientAPI.FIBCS);
|
681 |
{$ENDIF}
|
682 |
|
683 |
finalization
|
684 |
TFBLibrary.FreeLibraries;
|
685 |
{$IFNDEF FPC}
|
686 |
DeleteCriticalSection(TFBClientAPI.FIBCS);
|
687 |
{$ELSE}
|
688 |
DoneCriticalSection(TFBClientAPI.FIBCS);
|
689 |
{$ENDIF}
|
690 |
end.
|
691 |
|