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procedure TFBClientAPI.LoadIBLibrary; |
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function TFBLibrary.LoadIBLibrary: boolean; |
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function IsValidHandle(aHandle: TLibHandle): boolean; |
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begin |
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begin |
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Result := LoadLibrary(PChar(LibName)); |
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if IsValidHandle(Result) then |
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begin |
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FFBLibraryName := ExtractFileName(LibName); |
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FFBLibraryPath := ExtractFileDir(LibName); |
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end; |
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end; |
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function GetSpecialFolder(const CSIDL: integer) : string; |
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dllPathName: string; |
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oldFirebirdEV: string; |
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begin |
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if IsValidHandle(IBLibrary) then Exit; |
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Result := IsValidHandle(FIBLibrary); |
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if Result then Exit; |
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curPath := GetEnvironmentVariable('PATH'); |
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dllPathName := GetOverrideLibName; |
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if dllPathName <> '' then |
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begin |
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IBLibrary := DoLoadLibrary(dllPathName); |
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FOwnsIBLibrary := IsValidHandle(IBLibrary); |
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FIBLibrary := DoLoadLibrary(dllPathName); |
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Result := IsValidHandle(FIBLibrary); |
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Exit; |
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end; |
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if FileExists(InstallDir + FIREBIRD_EMBEDDED) then |
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begin |
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dllPathName := InstallDir + FIREBIRD_EMBEDDED; |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end |
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else |
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//Otherwise look for Firebird Client in installation dir |
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SetEnvironmentVariable('FIREBIRD',PChar(InstallDir)); |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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try |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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finally |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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SetEnvironmentVariable('FIREBIRD',PChar(oldFirebirdEV)); {restore} |
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end; |
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end; |
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// writeln('Dir = ',InstallDir); |
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{If FIREBIRD environment variable available then try this} |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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begin |
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InstallDir := GetEnvironmentVariable('FIREBIRD'); |
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if (length(InstallDir) > 0) and (InstallDir[length(InstallDir)] <> DirectorySeparator) then |
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//assume firebird.conf and firebird.msg in same dir |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end |
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else |
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if (InstallDir <> '') then |
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begin |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end |
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end |
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end; |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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{Use Registry key if it exists to locate library Firebird 2 only} |
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begin |
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with TRegistry.Create do |
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InstallDir := ReadString('DefaultInstance') + 'bin' + DirectorySeparator ; |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end |
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end |
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finally |
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end; |
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{Now try default install dir} |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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begin |
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InstallDir := GetSpecialFolder(CSIDL_PROGRAM_FILES) + |
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'Firebird' + |
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DirectorySeparator + 'Firebird_3_0' + DirectorySeparator; |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end; |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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begin |
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InstallDir := GetSpecialFolder(CSIDL_PROGRAM_FILES) + |
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'Firebird' + |
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DirectorySeparator + 'bin' + DirectorySeparator; |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end; |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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begin |
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InstallDir := GetSpecialFolder(CSIDL_PROGRAM_FILES) + |
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'Firebird' + |
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DirectorySeparator + 'bin' + DirectorySeparator; |
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dllPathName := InstallDir + FIREBIRD_CLIENT; |
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Add2Path(InstallDir); |
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IBLibrary := DoLoadLibrary(dllPathName) |
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FIBLibrary := DoLoadLibrary(dllPathName) |
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end; |
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//Otherwise see if Firebird client is in path |
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//and rely on registry for location of firebird.conf and firebird.msg |
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if not IsValidHandle(IBLibrary) then |
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if not IsValidHandle(FIBLibrary) then |
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begin |
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SetEnvironmentVariable('PATH',PChar(curPath)); |
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IBLibrary := DoLoadLibrary(FIREBIRD_CLIENT); |
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if IBLibrary <= HINSTANCE_ERROR then |
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FIBLibrary := DoLoadLibrary(FIREBIRD_CLIENT); |
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if FIBLibrary <= HINSTANCE_ERROR then |
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//well maybe InterBase is present... |
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IBLibrary := DoLoadLibrary(IBASE_DLL); |
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FIBLibrary := DoLoadLibrary(IBASE_DLL); |
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end; |
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end; |
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FOwnsIBLibrary := IsValidHandle(IBLibrary); |
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Result := IsValidHandle(FIBLibrary); |
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end; |
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class procedure TFBLibrary.SetupEnvironment; |
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begin |
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end; |
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function TFBLibrary.GetLibraryFilePath: string; |
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var buffer: array [0..IBBigLocalBufferLength] of char; |
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nSize: DWORD; |
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begin |
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nSize := GetModuleFileNameA(FIBLibrary,@buffer,IBBigLocalBufferLength+1); |
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if nSize > IBBigLocalBufferLength then |
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buffer[IBBigLocalBufferLength] :=#0; |
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Result := strpas(PAnsiChar(@buffer)); |
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end; |