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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.
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*
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* The contents of this file are subject to the Initial Developer's
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* Public License Version 1.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy
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* 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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unit FBOutputBlock;
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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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{ $DEFINE DEBUGOUTPUTBLOCK}
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interface
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{Provides common handling for the DB Info results, SQL Info and Service Response Block}
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uses
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Classes, SysUtils, FBClientAPI, IB, FBActivityMonitor;
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const
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DefaultBufferSize = 32000;
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DBInfoDefaultBufferSize = 512;
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type
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TItemDataType = (dtString, dtString2, dtByte, dtBytes, dtInteger, dtIntegerFixed, dtnone,
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dtList,dtSpecial);
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POutputBlockItemData = ^TOutputBlockItemData;
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TOutputBlockItemData = record
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{Describes a Clumplet in the buffer. FBufPtr always points to the clumplet id
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the rest of the clumplet up to the FSize is data. The data format is
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given by FDataType, and the data length is given by FDataLength}
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FBufPtr: PByte;
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FDataLength: integer;
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FSize: integer;
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FDataType: TItemDataType;
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FTruncated: boolean;
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FError: boolean;
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FSubItems: array of POutputBlockItemData;
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end;
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{ TOutputBlock }
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TOutputBlock = class(TFBInterfacedObject)
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private
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FBuffer: PByte;
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FBufSize: integer;
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FBufferParsed: boolean;
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procedure ParseBuffer;
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{$IFDEF DEBUGOUTPUTBLOCK}
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procedure FormattedPrint(const aItems: array of POutputBlockItemData;
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Indent: AnsiString);
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{$ENDIF}
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procedure PrintBuf;
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protected
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FIntegerType: TItemDataType;
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FError: boolean;
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FTruncated: boolean;
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FItems: array of POutputBlockItemData;
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procedure DoParseBuffer; virtual; abstract;
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function AddItem(BufPtr: PByte): POutputBlockItemData;
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function AddIntegerItem(BufPtr: PByte): POutputBlockItemData;
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function AddStringItem(BufPtr: PByte): POutputBlockItemData;
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function AddShortStringItem(BufPtr: PByte): POutputBlockItemData;
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function AddByteItem(BufPtr: PByte): POutputBlockItemData;
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function AddBytesItem(BufPtr: PByte): POutputBlockItemData;
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function AddListItem(BufPtr: PByte): POutputBlockItemData; virtual;
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function AddSpecialItem(BufPtr: PByte): POutputBlockItemData; virtual;
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public
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constructor Create(aSize: integer = DefaultBufferSize);
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destructor Destroy; override;
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function Buffer: PByte;
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function getBufSize: integer;
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public
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function GetCount: integer;
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function GetItem(index: integer): POutputBlockItemData;
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function Find(ItemType: byte): POutputBlockItemData;
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property Count: integer read GetCount;
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property Items[index: integer]: POutputBlockItemData read getItem; default;
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end;
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{ TOutputBlockItem }
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TOutputBlockItem = class(TFBInterfacedObject,IUnknown)
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private
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FOwner: TOutputBlock;
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FOwnerIntf: IUnknown;
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FItemData: POutputBlockItemData;
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protected
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function GetItem(index: integer): POutputBlockItemData;
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function Find(ItemType: byte): POutputBlockItemData;
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procedure SetString(out S: AnsiString; Buf: PByte; Len: integer;
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CodePage: TSystemCodePage);
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property ItemData: POutputBlockItemData read FItemData;
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property Owner: TOutputBlock read FOwner;
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public
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constructor Create(AOwner: TOutputBlock; Data: POutputBlockItemData);
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public
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function GetCount: integer;
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function getItemType: byte;
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function getSize: integer;
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procedure getRawBytes(var Buffer);
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function getAsInteger: integer;
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function getParamType: byte;
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function getAsString: AnsiString;
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function getAsByte: byte;
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function getAsBytes: TByteArray;
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function CopyTo(stream: TStream; count: integer): integer;
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end;
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TServiceQueryResultSubItem = class(TOutputBlockItem,IServiceQueryResultSubItem);
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{ TCustomOutputBlock }
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{$IFDEF FPC}
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TCustomOutputBlock<_TItem,_IItem> = class(TOutputBlock)
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{$ELSE}
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TOutputBlockItemClass = class of TOutputBlockItem;
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TCustomOutputBlock<_TItem: TOutputBlockItem;_IItem: IUnknown> = class(TOutputBlock)
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{$ENDIF}
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public
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function getItem(index: integer): _IItem;
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function find(ItemType: byte): _IItem;
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property Items[index: integer]: _IItem read getItem; default;
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end;
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{ TOutputBlockItemGroup }
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{$IFDEF FPC}
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TOutputBlockItemGroup<_TItem,_IItem> = class(TOutputBlockItem)
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{$ELSE}
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TOutputBlockItemGroup<_TItem: TOutputBlockItem; _IItem: IUnknown> = class(TOutputBlockItem)
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{$ENDIF}
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public
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function GetItem(index: integer): _IItem;
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function Find(ItemType: byte): _IItem;
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property Items[index: integer]: _IItem read getItem; default;
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end;
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{ TDBInfoItem }
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{$IFDEF FPC}
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TDBInfoItem = class;
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TDBInfoItem = class(TOutputBlockItemGroup<TDBInfoItem,IDBInfoItem>,IDBInfoItem)
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{$ELSE}
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TDBInfoItem = class(TOutputBlockItemGroup<TOutputBlockItem,IDBInfoItem>,IDBInfoItem)
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{$ENDIF}
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public
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procedure DecodeIDCluster(var ConnectionType: integer; var DBFileName, DBSiteName: AnsiString);
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procedure DecodeVersionString(var Version: byte; var VersionString: AnsiString);
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procedure DecodeUserNames(UserNames: TStrings);
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function getOperationCounts: TDBOperationCounts;
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end;
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{ TDBInformation }
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TDBInformation = class(TCustomOutputBlock<TDBInfoItem,IDBInfoItem>, IDBInformation)
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protected
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function AddSpecialItem(BufPtr: PByte): POutputBlockItemData; override;
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procedure DoParseBuffer; override;
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public
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constructor Create(aSize: integer=DBInfoDefaultBufferSize);
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end;
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{ TServiceQueryResultItem }
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TServiceQueryResultItem = class(TOutputBlockItemGroup<TServiceQueryResultSubItem,IServiceQueryResultSubItem>,
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IServiceQueryResultItem);
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{ TServiceQueryResults }
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TServiceQueryResults = class(TCustomOutputBlock<TServiceQueryResultItem,IServiceQueryResultItem>, IServiceQueryResults)
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protected
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function AddListItem(BufPtr: PByte): POutputBlockItemData; override;
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function AddSpecialItem(BufPtr: PByte): POutputBlockItemData; override;
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procedure DoParseBuffer; override;
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end;
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{ ISQLInfoItem }
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ISQLInfoSubItem = interface
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['{39852ee4-4851-44df-8dc0-26b991250098}']
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function getItemType: byte;
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function getSize: integer;
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function getAsString: AnsiString;
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function getAsInteger: integer;
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end;
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ISQLInfoItem = interface(ISQLInfoSubItem)
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['{34e3c39d-fe4f-4211-a7e3-0266495a359d}']
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function GetCount: integer;
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function GetItem(index: integer): ISQLInfoSubItem;
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function Find(ItemType: byte): ISQLInfoSubItem;
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property Count: integer read GetCount;
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property Items[index: integer]: ISQLInfoSubItem read getItem; default;
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end;
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{ISQLInfoResults}
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ISQLInfoResults = interface
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['{0b3fbe20-6f80-44e7-85ef-e708bc1f2043}']
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function GetCount: integer;
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function GetItem(index: integer): ISQLInfoItem;
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function Find(ItemType: byte): ISQLInfoItem;
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property Count: integer read GetCount;
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property Items[index: integer]: ISQLInfoItem read getItem; default;
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end;
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TSQLInfoResultsSubItem = class(TOutputBlockItem,ISQLInfoSubItem);
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{ TSQLInfoResultsItem }
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TSQLInfoResultsItem = class(TOutputBlockItemGroup<TSQLInfoResultsSubItem,ISQLInfoSubItem>,ISQLInfoItem);
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{ TSQLInfoResultsBuffer }
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TSQLInfoResultsBuffer = class(TCustomOutputBlock<TSQLInfoResultsItem,ISQLInfoItem>, ISQLInfoResults)
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protected
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function AddListItem(BufPtr: PByte): POutputBlockItemData; override;
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procedure DoParseBuffer; override;
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public
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constructor Create(aSize: integer = 1024);
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end;
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IBlobInfoItem = interface
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['{3a55e558-b97f-4cf3-af95-53b84f4d9a65}']
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function getItemType: byte;
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function getSize: integer;
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function getAsString: AnsiString;
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function getAsInteger: integer;
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end;
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IBlobInfo = interface
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['{8a340109-f600-4d26-ab1d-e0be2c759f1c}']
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function GetCount: integer;
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function GetItem(index: integer): IBlobInfoItem;
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function Find(ItemType: byte): IBlobInfoItem;
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property Count: integer read GetCount;
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property Items[index: integer]: IBlobInfoItem read getItem; default;
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end;
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{$IFDEF FPC}
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TBlobInfoItem = class;
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TBlobInfoItem = class(TOutputBlockItemGroup<TBlobInfoItem,IBlobInfoItem>,IBlobInfoItem)
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{$ELSE}
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TBlobInfoItem = class(TOutputBlockItemGroup<TOutputBlockItem,IBlobInfoItem>,IBlobInfoItem)
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{$ENDIF}
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end;
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{ TBlobInfo }
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TBlobInfo = class(TCustomOutputBlock<TBlobInfoItem,IBlobInfoItem>, IBlobInfo)
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protected
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procedure DoParseBuffer; override;
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public
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constructor Create(aSize: integer=DBInfoDefaultBufferSize);
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end;
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implementation
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uses FBMessages {$IFNDEF FPC}, TypInfo {$ENDIF};
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{$IFDEF FPC}
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{ TOutputBlockItemGroup }
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function TOutputBlockItemGroup<_TItem,_IItem>.GetItem(index: integer): _IItem;
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var P: POutputBlockItemData;
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begin
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P := inherited getItem(index);
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Result := _TItem.Create(self.Owner,P);
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end;
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function TOutputBlockItemGroup<_TItem,_IItem>.Find(ItemType: byte): _IItem;
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var P: POutputBlockItemData;
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begin
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P := inherited Find(ItemType);
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Result := _TItem.Create(self.Owner,P);
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end;
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{ TCustomOutputBlock }
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function TCustomOutputBlock<_TItem,_IItem>.getItem(index: integer): _IItem;
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var P: POutputBlockItemData;
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begin
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P := inherited getItem(index);
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Result := _TItem.Create(self,P)
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end;
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function TCustomOutputBlock<_TItem,_IItem>.find(ItemType: byte): _IItem;
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var P: POutputBlockItemData;
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begin
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P := inherited Find(ItemType);
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Result := _TItem.Create(self,P)
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end;
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327 |
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{$ELSE}
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329 |
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{ TOutputBlockItemGroup }
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331 |
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function TOutputBlockItemGroup<_TItem,_IItem>.GetItem(index: integer): _IItem;
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var P: POutputBlockItemData;
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Obj: TOutputBlockItem;
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begin
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P := inherited getItem(index);
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Obj := TOutputBlockItemClass(_TItem).Create(self.Owner,P);
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if Obj.QueryInterface(GetTypeData(TypeInfo(_IItem))^.Guid,Result) <> 0 then
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IBError(ibxeInterfaceNotSupported,[GuidToString(GetTypeData(TypeInfo(_IItem))^.Guid)]);
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end;
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341 |
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function TOutputBlockItemGroup<_TItem,_IItem>.Find(ItemType: byte): _IItem;
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var P: POutputBlockItemData;
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Obj: TOutputBlockItem;
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begin
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346 |
P := inherited Find(ItemType);
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Obj := TOutputBlockItemClass(_TItem).Create(self.Owner,P);
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if Obj.QueryInterface(GetTypeData(TypeInfo(_IItem))^.Guid,Result) <> 0 then
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IBError(ibxeInterfaceNotSupported,[GuidToString(GetTypeData(TypeInfo(_IItem))^.Guid)]);
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end;
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351 |
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{ TCustomOutputBlock }
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353 |
|
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function TCustomOutputBlock<_TItem,_IItem>.getItem(index: integer): _IItem;
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var P: POutputBlockItemData;
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Obj: TOutputBlockItem;
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begin
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358 |
P := inherited getItem(index);
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Obj := TOutputBlockItemClass(_TItem).Create(self,P);
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360 |
if Obj.QueryInterface(GetTypeData(TypeInfo(_IItem))^.Guid,Result) <> 0 then
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IBError(ibxeInterfaceNotSupported,[GuidToString(GetTypeData(TypeInfo(_IItem))^.Guid)]);
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362 |
end;
|
363 |
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364 |
function TCustomOutputBlock<_TItem,_IItem>.find(ItemType: byte): _IItem;
|
365 |
var P: POutputBlockItemData;
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366 |
Obj: TOutputBlockItem;
|
367 |
begin
|
368 |
P := inherited Find(ItemType);
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369 |
Obj := TOutputBlockItemClass(_TItem).Create(self,P);
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370 |
if Obj.QueryInterface(GetTypeData(TypeInfo(_IItem))^.Guid,Result) <> 0 then
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371 |
IBError(ibxeInterfaceNotSupported,[GuidToString(GetTypeData(TypeInfo(_IItem))^.Guid)]);
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372 |
end;
|
373 |
|
374 |
{$ENDIF}
|
375 |
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376 |
{ TOutputBlockItem }
|
377 |
|
378 |
function TOutputBlockItem.GetCount: integer;
|
379 |
begin
|
380 |
Result := Length(FItemData^.FSubItems);
|
381 |
end;
|
382 |
|
383 |
function TOutputBlockItem.GetItem(index: integer): POutputBlockItemData;
|
384 |
begin
|
385 |
if (index >= 0) and (index < Length(FItemData^.FSubItems)) then
|
386 |
Result := FItemData^.FSubItems[index]
|
387 |
else
|
388 |
with FirebirdClientAPI do
|
389 |
IBError(ibxeOutputBlockIndexError,[index]);
|
390 |
end;
|
391 |
|
392 |
function TOutputBlockItem.Find(ItemType: byte): POutputBlockItemData;
|
393 |
var i: integer;
|
394 |
begin
|
395 |
Result := nil;
|
396 |
for i := 0 to GetCount - 1 do
|
397 |
if byte(FItemData^.FSubItems[i]^.FBufPtr^) = ItemType then
|
398 |
begin
|
399 |
Result := FItemData^.FSubItems[i];
|
400 |
Exit;
|
401 |
end;
|
402 |
end;
|
403 |
|
404 |
{ TOutputBlockItem }
|
405 |
|
406 |
procedure TOutputBlockItem.SetString(out S: AnsiString; Buf: PByte;
|
407 |
Len: integer; CodePage: TSystemCodePage);
|
408 |
var rs: RawByteString;
|
409 |
begin
|
410 |
system.SetString(rs,PAnsiChar(Buf),len);
|
411 |
SetCodePage(rs,CodePage,false);
|
412 |
S := rs;
|
413 |
end;
|
414 |
|
415 |
constructor TOutputBlockItem.Create(AOwner: TOutputBlock;
|
416 |
Data: POutputBlockItemData);
|
417 |
begin
|
418 |
inherited Create;
|
419 |
FOwner := AOwner;
|
420 |
FOwnerIntf := AOwner;
|
421 |
FItemData := Data;
|
422 |
end;
|
423 |
|
424 |
function TOutputBlockItem.getItemType: byte;
|
425 |
begin
|
426 |
Result := byte(FItemData^.FBufPtr^);
|
427 |
end;
|
428 |
|
429 |
function TOutputBlockItem.getSize: integer;
|
430 |
begin
|
431 |
Result := FItemData^.FDataLength;
|
432 |
end;
|
433 |
|
434 |
procedure TOutputBlockItem.getRawBytes(var Buffer);
|
435 |
begin
|
436 |
with FItemData^ do
|
437 |
Move(FBufPtr^,Buffer,FDatalength);
|
438 |
end;
|
439 |
|
440 |
function TOutputBlockItem.getAsInteger: integer;
|
441 |
var len: integer;
|
442 |
begin
|
443 |
with FItemData^ do
|
444 |
case FDataType of
|
445 |
dtIntegerFixed:
|
446 |
with FirebirdClientAPI do
|
447 |
Result := DecodeInteger(FBufPtr+1,4);
|
448 |
|
449 |
dtByte,
|
450 |
dtInteger:
|
451 |
with FirebirdClientAPI do
|
452 |
begin
|
453 |
len := DecodeInteger(FBufPtr+1,2);
|
454 |
Result := DecodeInteger(FBufPtr+3,len);
|
455 |
end;
|
456 |
else
|
457 |
IBError(ibxeOutputBlockTypeError,[nil]);
|
458 |
end;
|
459 |
end;
|
460 |
|
461 |
function TOutputBlockItem.getParamType: byte;
|
462 |
begin
|
463 |
Result := byte(FItemData^.FBufPtr^)
|
464 |
end;
|
465 |
|
466 |
function TOutputBlockItem.getAsString: AnsiString;
|
467 |
var len: integer;
|
468 |
begin
|
469 |
Result := '';
|
470 |
with FItemData^ do
|
471 |
case FDataType of
|
472 |
dtInteger:
|
473 |
Result := IntToStr(getAsInteger);
|
474 |
dtByte:
|
475 |
Result := IntToStr(getAsByte);
|
476 |
dtString:
|
477 |
begin
|
478 |
len := byte((FBufPtr+1)^);
|
479 |
SetString(Result,FBufPtr+2,len,CP_ACP);
|
480 |
end;
|
481 |
dtString2:
|
482 |
begin
|
483 |
with FirebirdClientAPI do
|
484 |
len := DecodeInteger(FBufPtr+1,2);
|
485 |
SetString(Result,FBufPtr+3,len,CP_ACP);
|
486 |
end;
|
487 |
else
|
488 |
IBError(ibxeOutputBlockTypeError,[nil]);
|
489 |
end;
|
490 |
end;
|
491 |
|
492 |
function TOutputBlockItem.getAsByte: byte;
|
493 |
begin
|
494 |
with FItemData^ do
|
495 |
if FDataType = dtByte then
|
496 |
Result := byte((FBufPtr+2)^)
|
497 |
else
|
498 |
IBError(ibxeOutputBlockTypeError,[nil]);
|
499 |
end;
|
500 |
|
501 |
function TOutputBlockItem.getAsBytes: TByteArray;
|
502 |
var i: integer;
|
503 |
P: PByte;
|
504 |
begin
|
505 |
with FItemData^ do
|
506 |
if FDataType = dtBytes then
|
507 |
begin
|
508 |
SetLength(Result,FDataLength);
|
509 |
P := FBufPtr;
|
510 |
for i := 0 to FDataLength - 1 do
|
511 |
begin
|
512 |
Result[i] := byte(P^);
|
513 |
Inc(P);
|
514 |
end
|
515 |
end
|
516 |
else
|
517 |
IBError(ibxeOutputBlockTypeError,[nil]);
|
518 |
end;
|
519 |
|
520 |
function TOutputBlockItem.CopyTo(stream: TStream; count: integer): integer;
|
521 |
var len: integer;
|
522 |
begin
|
523 |
if count < 0 then count := 0;
|
524 |
with FItemData^ do
|
525 |
begin
|
526 |
case FDataType of
|
527 |
dtString:
|
528 |
begin
|
529 |
len := byte((FBufPtr+1)^);
|
530 |
if (count > 0) and (count < len) then len := count;
|
531 |
Result := stream.Write((FBufPtr+2)^,len);
|
532 |
end;
|
533 |
dtString2:
|
534 |
begin
|
535 |
with FirebirdClientAPI do
|
536 |
len := DecodeInteger(FBufPtr+1,2);
|
537 |
if (count > 0) and (count < len) then len := count;
|
538 |
Result := stream.Write((FBufPtr+3)^,len);
|
539 |
end;
|
540 |
else
|
541 |
IBError(ibxeOutputBlockTypeError,[nil]);
|
542 |
end;
|
543 |
end;
|
544 |
end;
|
545 |
|
546 |
{ TOutputBlock }
|
547 |
|
548 |
procedure TOutputBlock.ParseBuffer;
|
549 |
begin
|
550 |
if not FBufferParsed then
|
551 |
begin
|
552 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
553 |
PrintBuf;
|
554 |
{$ENDIF}
|
555 |
DoParseBuffer;
|
556 |
if FError or FTruncated then
|
557 |
SetLength(FItems,Length(FItems)-1);
|
558 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
559 |
FormattedPrint(FItems,'');
|
560 |
{$ENDIF}
|
561 |
end;
|
562 |
FBufferParsed := true;
|
563 |
end;
|
564 |
|
565 |
function TOutputBlock.AddItem(BufPtr: PByte): POutputBlockItemData;
|
566 |
begin
|
567 |
new(Result);
|
568 |
with Result^ do
|
569 |
begin
|
570 |
FDataType := dtNone;
|
571 |
FBufPtr := BufPtr;
|
572 |
FDataLength := 0;
|
573 |
FSize := 1;
|
574 |
SetLength(FSubItems,0);
|
575 |
end;
|
576 |
end;
|
577 |
|
578 |
function TOutputBlock.AddIntegerItem(BufPtr: PByte): POutputBlockItemData;
|
579 |
begin
|
580 |
new(Result);
|
581 |
with Result^ do
|
582 |
begin
|
583 |
FDataType := FIntegerType;
|
584 |
FBufPtr := BufPtr;
|
585 |
if FDataType = dtIntegerFixed then
|
586 |
begin
|
587 |
FDataLength := 4;
|
588 |
FSize := 5;
|
589 |
end
|
590 |
else
|
591 |
begin
|
592 |
with FirebirdClientAPI do
|
593 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
594 |
FSize := FDataLength + 3;
|
595 |
end;
|
596 |
SetLength(FSubItems,0);
|
597 |
end;
|
598 |
end;
|
599 |
|
600 |
function TOutputBlock.AddStringItem(BufPtr: PByte): POutputBlockItemData;
|
601 |
begin
|
602 |
new(Result);
|
603 |
with Result^ do
|
604 |
begin
|
605 |
FDataType := dtString2;
|
606 |
FBufPtr := BufPtr;
|
607 |
with FirebirdClientAPI do
|
608 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
609 |
FSize := FDataLength + 3;
|
610 |
SetLength(FSubItems,0);
|
611 |
end;
|
612 |
end;
|
613 |
|
614 |
function TOutputBlock.AddShortStringItem(BufPtr: PByte): POutputBlockItemData;
|
615 |
begin
|
616 |
new(Result);
|
617 |
with Result^ do
|
618 |
begin
|
619 |
FDataType := dtString;
|
620 |
FBufPtr := BufPtr;
|
621 |
FDataLength := byte((FBufPtr+1)^);
|
622 |
FSize := FDataLength + 2;
|
623 |
SetLength(FSubItems,0);
|
624 |
end;
|
625 |
end;
|
626 |
|
627 |
function TOutputBlock.AddByteItem(BufPtr: PByte): POutputBlockItemData;
|
628 |
begin
|
629 |
new(Result);
|
630 |
with Result^ do
|
631 |
begin
|
632 |
FDataType := dtByte;
|
633 |
FBufPtr := BufPtr;
|
634 |
FDataLength := 1;
|
635 |
FSize := 2;
|
636 |
SetLength(FSubItems,0);
|
637 |
end;
|
638 |
end;
|
639 |
|
640 |
function TOutputBlock.AddBytesItem(BufPtr: PByte): POutputBlockItemData;
|
641 |
begin
|
642 |
new(Result);
|
643 |
with Result^ do
|
644 |
begin
|
645 |
FDataType := dtBytes;
|
646 |
FBufPtr := BufPtr;
|
647 |
with FirebirdClientAPI do
|
648 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
649 |
FSize := FDataLength + 3;
|
650 |
SetLength(FSubItems,0);
|
651 |
end;
|
652 |
end;
|
653 |
|
654 |
function TOutputBlock.AddListItem(BufPtr: PByte): POutputBlockItemData;
|
655 |
begin
|
656 |
new(Result);
|
657 |
with Result^ do
|
658 |
begin
|
659 |
FDataType := dtList;
|
660 |
FBufPtr := BufPtr;
|
661 |
FSize := FBuffer + FBufSize - FBufPtr;
|
662 |
FDataLength := FSize - 1;
|
663 |
SetLength(FSubItems,0);
|
664 |
end;
|
665 |
end;
|
666 |
|
667 |
function TOutputBlock.AddSpecialItem(BufPtr: PByte): POutputBlockItemData;
|
668 |
begin
|
669 |
new(Result);
|
670 |
with Result^ do
|
671 |
begin
|
672 |
FDataType := dtSpecial;
|
673 |
FBufPtr := BufPtr;
|
674 |
FSize := FBuffer + FBufSize - FBufPtr;
|
675 |
FDataLength := FSize - 1;
|
676 |
SetLength(FSubItems,0);
|
677 |
end;
|
678 |
end;
|
679 |
|
680 |
constructor TOutputBlock.Create(aSize: integer);
|
681 |
begin
|
682 |
inherited Create;
|
683 |
FBufSize := aSize;
|
684 |
GetMem(FBuffer,aSize);
|
685 |
if FBuffer = nil then
|
686 |
OutOfMemoryError;
|
687 |
FillChar(FBuffer^,aSize,255);
|
688 |
FBufferParsed := false;
|
689 |
FIntegerType := dtIntegerFixed;
|
690 |
end;
|
691 |
|
692 |
destructor TOutputBlock.Destroy;
|
693 |
var i, j: integer;
|
694 |
begin
|
695 |
for i := 0 to length(FItems) - 1 do
|
696 |
begin
|
697 |
for j := 0 to Length(FItems[i]^.FSubItems) -1 do
|
698 |
dispose(FItems[i]^.FSubItems[j]);
|
699 |
dispose(FItems[i]);
|
700 |
end;
|
701 |
FreeMem(FBuffer);
|
702 |
inherited Destroy;
|
703 |
end;
|
704 |
|
705 |
function TOutputBlock.Buffer: PByte;
|
706 |
begin
|
707 |
Result := FBuffer;
|
708 |
end;
|
709 |
|
710 |
function TOutputBlock.getBufSize: integer;
|
711 |
begin
|
712 |
Result := FBufSize;
|
713 |
end;
|
714 |
|
715 |
function TOutputBlock.GetCount: integer;
|
716 |
begin
|
717 |
ParseBuffer;
|
718 |
Result := length(FItems);
|
719 |
end;
|
720 |
|
721 |
function TOutputBlock.GetItem(index: integer): POutputBlockItemData;
|
722 |
begin
|
723 |
ParseBuffer;
|
724 |
if (index >= 0) and (index < Length(FItems)) then
|
725 |
Result := FItems[index]
|
726 |
else
|
727 |
IBError(ibxeOutputBlockIndexError,[index]);
|
728 |
end;
|
729 |
|
730 |
function TOutputBlock.Find(ItemType: byte): POutputBlockItemData;
|
731 |
var i: integer;
|
732 |
begin
|
733 |
Result := nil;
|
734 |
for i := 0 to getCount - 1 do
|
735 |
if byte(FItems[i]^.FBufPtr^) = ItemType then
|
736 |
begin
|
737 |
Result := FItems[i];
|
738 |
Exit;
|
739 |
end;
|
740 |
end;
|
741 |
|
742 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
743 |
procedure TOutputBlock.FormattedPrint(
|
744 |
const aItems: array of POutputBlockItemData; Indent: AnsiString);
|
745 |
|
746 |
var i: integer;
|
747 |
item: TOutputBlockItem;
|
748 |
begin
|
749 |
if FError then
|
750 |
writeln('Error')
|
751 |
else
|
752 |
if FTruncated then
|
753 |
writeln('Truncated')
|
754 |
else
|
755 |
for i := 0 to Length(aItems) - 1 do
|
756 |
with aItems[i]^ do
|
757 |
begin
|
758 |
if FError then
|
759 |
writeln('Error')
|
760 |
else
|
761 |
if FTruncated then
|
762 |
writeln('Truncated')
|
763 |
else
|
764 |
case FDataType of
|
765 |
dtList:
|
766 |
begin
|
767 |
writeln(Indent,'ItemType = ',byte(FBufPtr^));
|
768 |
FormattedPrint(FSubItems,Indent + ' ');
|
769 |
end;
|
770 |
dtSpecial:
|
771 |
writeln(Indent,'ItemType = ',byte(FBufPtr^),' Length = ',FSize);
|
772 |
else
|
773 |
begin
|
774 |
item := TOutputBlockItem.Create(self,(aItems[i]));
|
775 |
writeln(Indent,'ItemType = ',byte(FBufPtr^),' Value = ',(item as TOutputBlockItem).GetAsString);
|
776 |
end;
|
777 |
end;
|
778 |
end;
|
779 |
end;
|
780 |
{$ENDIF}
|
781 |
|
782 |
procedure TOutputBlock.PrintBuf;
|
783 |
var i: integer;
|
784 |
begin
|
785 |
write(classname,': ');
|
786 |
for i := 0 to getBufSize - 1 do
|
787 |
begin
|
788 |
write(Format('%x ',[byte(Buffer[i])]));
|
789 |
if byte(FBuffer[i]) = isc_info_end then break;
|
790 |
end;
|
791 |
writeln;
|
792 |
end;
|
793 |
|
794 |
{ TDBInfoItem }
|
795 |
|
796 |
procedure TDBInfoItem.DecodeIDCluster(var ConnectionType: integer;
|
797 |
var DBFileName, DBSiteName: AnsiString);
|
798 |
var P: PByte;
|
799 |
begin
|
800 |
with ItemData^ do
|
801 |
if FBufPtr^ = isc_info_db_id then
|
802 |
begin
|
803 |
P := FBufPtr + 3;
|
804 |
if FDataLength > 0 then
|
805 |
ConnectionType := integer(P^);
|
806 |
Inc(P);
|
807 |
SetString(DBFileName,P+1,byte(P^),CP_ACP);
|
808 |
P := P + Length(DBFileName) + 1;
|
809 |
SetString(DBSiteName,P+1,byte(P^),CP_ACP);
|
810 |
end
|
811 |
else
|
812 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
813 |
end;
|
814 |
|
815 |
procedure TDBInfoItem.DecodeVersionString(var Version: byte;
|
816 |
var VersionString: AnsiString);
|
817 |
var P: PByte;
|
818 |
begin
|
819 |
with ItemData^ do
|
820 |
if FBufPtr^ = isc_info_version then
|
821 |
begin
|
822 |
P := FBufPtr+3;
|
823 |
VersionString := '';
|
824 |
Version := byte(P^);
|
825 |
Inc(P);
|
826 |
SetString(VersionString,P+1,byte(P^),CP_ACP);
|
827 |
end
|
828 |
else
|
829 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
830 |
end;
|
831 |
|
832 |
procedure TDBInfoItem.DecodeUserNames(UserNames: TStrings);
|
833 |
var P: PByte;
|
834 |
s: AnsiString;
|
835 |
begin
|
836 |
with ItemData^ do
|
837 |
if FBufPtr^ = isc_info_user_names then
|
838 |
begin
|
839 |
P := FBufPtr+3;
|
840 |
while (P < FBufPtr + FSize) do
|
841 |
begin
|
842 |
SetString(s,P+1,byte(P^),CP_ACP);
|
843 |
UserNames.Add(s);
|
844 |
P := P + Length(s) + 1;
|
845 |
end;
|
846 |
end
|
847 |
else
|
848 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
849 |
end;
|
850 |
|
851 |
function TDBInfoItem.getOperationCounts: TDBOperationCounts;
|
852 |
var tableCounts: integer;
|
853 |
P: PByte;
|
854 |
i: integer;
|
855 |
begin
|
856 |
with ItemData^ do
|
857 |
if byte(FBufPtr^) in [isc_info_backout_count, isc_info_delete_count,
|
858 |
isc_info_expunge_count,isc_info_insert_count, isc_info_purge_count,
|
859 |
isc_info_read_idx_count, isc_info_read_seq_count, isc_info_update_count] then
|
860 |
begin
|
861 |
tableCounts := FDataLength div 6;
|
862 |
SetLength(Result,TableCounts);
|
863 |
P := FBufPtr + 3;
|
864 |
for i := 0 to TableCounts -1 do
|
865 |
with FirebirdClientAPI do
|
866 |
begin
|
867 |
Result[i].TableID := DecodeInteger(P,2);
|
868 |
Inc(P,2);
|
869 |
Result[i].Count := DecodeInteger(P,4);
|
870 |
Inc(P,4);
|
871 |
end;
|
872 |
end
|
873 |
else
|
874 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
875 |
end;
|
876 |
|
877 |
{ TDBInformation }
|
878 |
|
879 |
function TDBInformation.AddSpecialItem(BufPtr: PByte): POutputBlockItemData;
|
880 |
begin
|
881 |
Result := inherited AddSpecialItem(BufPtr);
|
882 |
with Result^ do
|
883 |
begin
|
884 |
with FirebirdClientAPI do
|
885 |
FDataLength := DecodeInteger(FBufPtr+1,2);
|
886 |
FSize := FDataLength + 3;
|
887 |
end;
|
888 |
end;
|
889 |
|
890 |
procedure TDBInformation.DoParseBuffer;
|
891 |
var P: PByte;
|
892 |
index: integer;
|
893 |
begin
|
894 |
P := Buffer;
|
895 |
index := 0;
|
896 |
SetLength(FItems,0);
|
897 |
while (P^ <> isc_info_end) and (P < Buffer + getBufSize) do
|
898 |
begin
|
899 |
SetLength(FItems,index+1);
|
900 |
case byte(P^) of
|
901 |
isc_info_no_reserve,
|
902 |
isc_info_allocation,
|
903 |
isc_info_ods_minor_version,
|
904 |
isc_info_ods_version,
|
905 |
isc_info_db_SQL_dialect,
|
906 |
isc_info_page_size,
|
907 |
isc_info_current_memory,
|
908 |
isc_info_forced_writes,
|
909 |
isc_info_max_memory,
|
910 |
isc_info_num_buffers,
|
911 |
isc_info_sweep_interval,
|
912 |
isc_info_fetches,
|
913 |
isc_info_marks,
|
914 |
isc_info_reads,
|
915 |
isc_info_writes:
|
916 |
FItems[index] := AddIntegerItem(P);
|
917 |
|
918 |
isc_info_implementation,
|
919 |
isc_info_base_level:
|
920 |
FItems[index] := AddBytesItem(P);
|
921 |
|
922 |
isc_info_db_id,
|
923 |
isc_info_version,
|
924 |
isc_info_backout_count,
|
925 |
isc_info_delete_count,
|
926 |
isc_info_expunge_count,
|
927 |
isc_info_insert_count,
|
928 |
isc_info_purge_count,
|
929 |
isc_info_read_idx_count,
|
930 |
isc_info_read_seq_count,
|
931 |
isc_info_update_count,
|
932 |
isc_info_user_names:
|
933 |
FItems[index] := AddSpecialItem(P);
|
934 |
|
935 |
else
|
936 |
FItems[index] := AddSpecialItem(P);
|
937 |
end;
|
938 |
P := P + FItems[index]^.FSize;
|
939 |
Inc(index);
|
940 |
end;
|
941 |
end;
|
942 |
|
943 |
constructor TDBInformation.Create(aSize: integer);
|
944 |
begin
|
945 |
inherited Create(aSize);
|
946 |
FIntegerType := dtInteger;
|
947 |
end;
|
948 |
|
949 |
{ TServiceQueryResults }
|
950 |
|
951 |
function TServiceQueryResults.AddListItem(BufPtr: PByte): POutputBlockItemData;
|
952 |
var P: PByte;
|
953 |
i: integer;
|
954 |
group: byte;
|
955 |
begin
|
956 |
Result := inherited AddListItem(BufPtr);
|
957 |
P := BufPtr + 1;
|
958 |
i := 0;
|
959 |
group := byte(BufPtr^);
|
960 |
if group in [isc_info_svc_get_users,isc_info_svc_limbo_trans] then
|
961 |
begin
|
962 |
with FirebirdClientAPI do
|
963 |
Result^.FSize := DecodeInteger(P,2) + 3;
|
964 |
Inc(P,2);
|
965 |
end;
|
966 |
with Result^ do
|
967 |
begin
|
968 |
while (P < FBufPtr + FSize) and (P^ <> isc_info_flag_end) do
|
969 |
begin
|
970 |
SetLength(FSubItems,i+1);
|
971 |
case group of
|
972 |
isc_info_svc_svr_db_info:
|
973 |
case integer(P^) of
|
974 |
isc_spb_num_att,
|
975 |
isc_spb_num_db:
|
976 |
FSubItems[i] := AddIntegerItem(P);
|
977 |
|
978 |
isc_spb_dbname:
|
979 |
FSubItems[i] := AddStringItem(P);
|
980 |
|
981 |
else
|
982 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
983 |
end;
|
984 |
|
985 |
isc_info_svc_get_license:
|
986 |
case integer(P^) of
|
987 |
isc_spb_lic_id,
|
988 |
isc_spb_lic_key:
|
989 |
FSubItems[i] := AddIntegerItem(P);
|
990 |
else
|
991 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
992 |
end;
|
993 |
|
994 |
isc_info_svc_limbo_trans:
|
995 |
case integer(P^) of
|
996 |
isc_spb_tra_id,
|
997 |
isc_spb_single_tra_id,
|
998 |
isc_spb_multi_tra_id:
|
999 |
FSubItems[i] := AddIntegerItem(P);
|
1000 |
|
1001 |
isc_spb_tra_host_site,
|
1002 |
isc_spb_tra_remote_site,
|
1003 |
isc_spb_tra_db_path:
|
1004 |
FSubItems[i] := AddStringItem(P);
|
1005 |
|
1006 |
isc_spb_tra_advise,
|
1007 |
isc_spb_tra_state:
|
1008 |
FSubItems[i] := AddByteItem(P);
|
1009 |
else
|
1010 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
1011 |
end;
|
1012 |
|
1013 |
isc_info_svc_get_users:
|
1014 |
case integer(P^) of
|
1015 |
isc_spb_sec_userid,
|
1016 |
isc_spb_sec_groupid:
|
1017 |
FSubItems[i] := AddIntegerItem(P);
|
1018 |
|
1019 |
isc_spb_sec_username,
|
1020 |
isc_spb_sec_password,
|
1021 |
isc_spb_sec_firstname,
|
1022 |
isc_spb_sec_middlename,
|
1023 |
isc_spb_sec_lastname:
|
1024 |
FSubItems[i] := AddStringItem(P);
|
1025 |
|
1026 |
else
|
1027 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
1028 |
end;
|
1029 |
|
1030 |
end;
|
1031 |
P := P + FSubItems[i]^.FSize;
|
1032 |
Inc(i);
|
1033 |
end;
|
1034 |
FDataLength := 0;
|
1035 |
for i := 0 to Length(FSubItems) - 1 do
|
1036 |
FDataLength := FDataLength + FSubItems[i]^.FSize;
|
1037 |
if group in [isc_info_svc_get_users,isc_info_svc_limbo_trans] then
|
1038 |
Exit;
|
1039 |
|
1040 |
if (P < FBufPtr + FSize) and (P^ = isc_info_flag_end) then
|
1041 |
FSize := FDataLength + 2 {include start and end flag}
|
1042 |
else
|
1043 |
FSize := FDataLength + 1; {start flag only}
|
1044 |
end;
|
1045 |
end;
|
1046 |
|
1047 |
function TServiceQueryResults.AddSpecialItem(BufPtr: PByte
|
1048 |
): POutputBlockItemData;
|
1049 |
var P: PByte;
|
1050 |
i: integer;
|
1051 |
begin
|
1052 |
Result := inherited AddSpecialItem(BufPtr);
|
1053 |
with Result^ do
|
1054 |
begin
|
1055 |
with FirebirdClientAPI do
|
1056 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
1057 |
|
1058 |
P := FBufPtr + 3; {skip length bytes}
|
1059 |
i := 0;
|
1060 |
while P < FBufPtr + FDataLength do
|
1061 |
begin
|
1062 |
FSubItems[i] := AddIntegerItem(P);
|
1063 |
P := P + FSubItems[i]^.FSize;
|
1064 |
Inc(i);
|
1065 |
end;
|
1066 |
end;
|
1067 |
end;
|
1068 |
|
1069 |
procedure TServiceQueryResults.DoParseBuffer;
|
1070 |
var P: PByte;
|
1071 |
i: integer;
|
1072 |
begin
|
1073 |
P := Buffer;
|
1074 |
i := 0;
|
1075 |
while (P < Buffer + getBufSize) and (P^ <> isc_info_end) do
|
1076 |
begin
|
1077 |
SetLength(FItems,i+1);
|
1078 |
case integer(P^) of
|
1079 |
isc_info_svc_line,
|
1080 |
isc_info_svc_get_env,
|
1081 |
isc_info_svc_get_env_lock,
|
1082 |
isc_info_svc_get_env_msg,
|
1083 |
isc_info_svc_user_dbpath,
|
1084 |
isc_info_svc_server_version,
|
1085 |
isc_info_svc_implementation,
|
1086 |
isc_info_svc_to_eof:
|
1087 |
FItems[i] := AddStringItem(P);
|
1088 |
|
1089 |
isc_info_svc_get_license_mask,
|
1090 |
isc_info_svc_capabilities,
|
1091 |
isc_info_svc_version,
|
1092 |
isc_info_svc_running,
|
1093 |
isc_info_svc_stdin:
|
1094 |
FItems[i] := AddIntegerItem(P);
|
1095 |
|
1096 |
isc_info_svc_timeout,
|
1097 |
isc_info_data_not_ready,
|
1098 |
isc_info_truncated:
|
1099 |
FItems[i] := AddItem(P);
|
1100 |
|
1101 |
isc_info_svc_svr_db_info,
|
1102 |
isc_info_svc_get_license,
|
1103 |
isc_info_svc_limbo_trans,
|
1104 |
isc_info_svc_get_users:
|
1105 |
FItems[i] := AddListItem(P);
|
1106 |
|
1107 |
isc_info_svc_get_config:
|
1108 |
FItems[i] := AddSpecialItem(P);
|
1109 |
|
1110 |
|
1111 |
else
|
1112 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
1113 |
end;
|
1114 |
P := P + FItems[i]^.FSize;
|
1115 |
Inc(i);
|
1116 |
end;
|
1117 |
end;
|
1118 |
|
1119 |
{ TSQLInfoResultsBuffer }
|
1120 |
|
1121 |
function TSQLInfoResultsBuffer.AddListItem(BufPtr: PByte): POutputBlockItemData;
|
1122 |
var P: PByte;
|
1123 |
i: integer;
|
1124 |
begin
|
1125 |
Result := inherited AddListItem(BufPtr);
|
1126 |
P := BufPtr + 1;
|
1127 |
i := 0;
|
1128 |
|
1129 |
if byte(BufPtr^) = isc_info_sql_records then
|
1130 |
begin
|
1131 |
with FirebirdClientAPI do
|
1132 |
Result^.FSize := DecodeInteger(P,2) + 3;
|
1133 |
Inc(P,2);
|
1134 |
with Result^ do
|
1135 |
begin
|
1136 |
while (P < FBufPtr + FSize) and (byte(P^) <> isc_info_end) do
|
1137 |
begin
|
1138 |
SetLength(FSubItems,i+1);
|
1139 |
case integer(P^) of
|
1140 |
isc_info_req_select_count,
|
1141 |
isc_info_req_insert_count,
|
1142 |
isc_info_req_update_count,
|
1143 |
isc_info_req_delete_count:
|
1144 |
FSubItems[i] := AddIntegerItem(P);
|
1145 |
|
1146 |
isc_info_truncated:
|
1147 |
begin
|
1148 |
FTruncated := true;
|
1149 |
Exit;
|
1150 |
end;
|
1151 |
|
1152 |
isc_info_error:
|
1153 |
begin
|
1154 |
FError := true;
|
1155 |
Exit;
|
1156 |
end;
|
1157 |
else
|
1158 |
FSubItems[i] := AddSpecialItem(P);
|
1159 |
end;
|
1160 |
P := P + FSubItems[i]^.FSize;
|
1161 |
Inc(i);
|
1162 |
end;
|
1163 |
end;
|
1164 |
end;
|
1165 |
end;
|
1166 |
|
1167 |
procedure TSQLInfoResultsBuffer.DoParseBuffer;
|
1168 |
var P: PByte;
|
1169 |
index: integer;
|
1170 |
begin
|
1171 |
P := Buffer;
|
1172 |
index := 0;
|
1173 |
SetLength(FItems,0);
|
1174 |
while (P^ <> isc_info_end) and (P < Buffer + getBufSize) do
|
1175 |
begin
|
1176 |
SetLength(FItems,index+1);
|
1177 |
case byte(P^) of
|
1178 |
isc_info_sql_stmt_type:
|
1179 |
FItems[index] := AddIntegerItem(P);
|
1180 |
|
1181 |
isc_info_sql_get_plan:
|
1182 |
FItems[index] := AddStringItem(P);
|
1183 |
|
1184 |
isc_info_sql_records:
|
1185 |
FItems[index] := AddListItem(P);
|
1186 |
|
1187 |
isc_info_truncated:
|
1188 |
begin
|
1189 |
FTruncated := true;
|
1190 |
Exit;
|
1191 |
end;
|
1192 |
|
1193 |
isc_info_error:
|
1194 |
begin
|
1195 |
FError := true;
|
1196 |
Exit;
|
1197 |
end;
|
1198 |
|
1199 |
else
|
1200 |
FItems[index] := AddSpecialItem(P);
|
1201 |
end;
|
1202 |
P := P + FItems[index]^.FSize;
|
1203 |
Inc(index);
|
1204 |
end;
|
1205 |
end;
|
1206 |
|
1207 |
constructor TSQLInfoResultsBuffer.Create(aSize: integer);
|
1208 |
begin
|
1209 |
inherited Create(aSize);
|
1210 |
FIntegerType := dtInteger;
|
1211 |
end;
|
1212 |
|
1213 |
{ TBlobInfo }
|
1214 |
|
1215 |
procedure TBlobInfo.DoParseBuffer;
|
1216 |
var P: PByte;
|
1217 |
index: integer;
|
1218 |
begin
|
1219 |
P := Buffer;
|
1220 |
index := 0;
|
1221 |
SetLength(FItems,0);
|
1222 |
while (P^ <> isc_info_end) and (P < Buffer + getBufSize) do
|
1223 |
begin
|
1224 |
SetLength(FItems,index+1);
|
1225 |
case byte(P^) of
|
1226 |
isc_info_blob_num_segments,
|
1227 |
isc_info_blob_max_segment,
|
1228 |
isc_info_blob_total_length,
|
1229 |
isc_info_blob_type:
|
1230 |
FItems[index] := AddIntegerItem(P);
|
1231 |
else
|
1232 |
FItems[index] := AddSpecialItem(P);
|
1233 |
end;
|
1234 |
P := P + FItems[index]^.FSize;
|
1235 |
Inc(index);
|
1236 |
end;
|
1237 |
end;
|
1238 |
|
1239 |
constructor TBlobInfo.Create(aSize: integer);
|
1240 |
begin
|
1241 |
inherited Create(aSize);
|
1242 |
FIntegerType := dtInteger;
|
1243 |
end;
|
1244 |
|
1245 |
end.
|
1246 |
|