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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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{$IFDEF FPC}
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{$mode objfpc}{$H+}
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{$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: PChar;
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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: PChar;
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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: string);
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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: PChar): POutputBlockItemData;
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function AddIntegerItem(BufPtr: PChar): POutputBlockItemData;
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function AddStringItem(BufPtr: PChar): POutputBlockItemData;
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function AddShortStringItem(BufPtr: PChar): POutputBlockItemData;
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function AddByteItem(BufPtr: PChar): POutputBlockItemData;
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function AddBytesItem(BufPtr: PChar): POutputBlockItemData;
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function AddListItem(BufPtr: PChar): POutputBlockItemData; virtual;
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function AddSpecialItem(BufPtr: PChar): 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: PChar;
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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: PAnsiChar; Len: SizeInt;
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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: string;
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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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{ TCustomOutputBlock }
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generic TCustomOutputBlock<_TItem,_IItem> = class(TOutputBlock)
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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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generic TOutputBlockItemGroup<_TItem;_IItem> = class(TOutputBlockItem)
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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 = class;
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{ TDBInfoItem }
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TDBInfoItem = class(specialize TOutputBlockItemGroup<TDBInfoItem,IDBInfoItem>,IDBInfoItem)
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public
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procedure DecodeIDCluster(var ConnectionType: integer; var DBFileName, DBSiteName: string);
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procedure DecodeVersionString(var Version: byte; var VersionString: string);
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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(specialize TCustomOutputBlock<TDBInfoItem,IDBInfoItem>, IDBInformation)
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protected
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function AddSpecialItem(BufPtr: PChar): 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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TServiceQueryResultSubItem = class(TOutputBlockItem,IServiceQueryResultSubItem);
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{ TServiceQueryResultItem }
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TServiceQueryResultItem = class(specialize TOutputBlockItemGroup<TServiceQueryResultSubItem,IServiceQueryResultSubItem>,
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IServiceQueryResultItem);
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{ TServiceQueryResults }
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TServiceQueryResults = class(specialize TCustomOutputBlock<TServiceQueryResultItem,IServiceQueryResultItem>, IServiceQueryResults)
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protected
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function AddListItem(BufPtr: PChar): POutputBlockItemData; override;
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function AddSpecialItem(BufPtr: PChar): POutputBlockItemData; override;
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procedure DoParseBuffer; override;
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end;
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{ ISQLInfoItem }
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ISQLInfoItem = interface
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function getItemType: byte;
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function getSize: integer;
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function getAsString: string;
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function getAsInteger: integer;
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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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{ISQLInfoResults}
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ISQLInfoResults = interface
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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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TSQLInfoResultsItem = class;
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{ TSQLInfoResultsItem }
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TSQLInfoResultsItem = class(specialize TOutputBlockItemGroup<TSQLInfoResultsItem,ISQLInfoItem>,ISQLInfoItem);
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{ TSQLInfoResultsBuffer }
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TSQLInfoResultsBuffer = class(specialize TCustomOutputBlock<TSQLInfoResultsItem,ISQLInfoItem>, ISQLInfoResults)
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protected
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function AddListItem(BufPtr: PChar): 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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implementation
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uses FBMessages;
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{ TOutputBlockItemGroup }
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function TOutputBlockItemGroup.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.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.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.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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{ TOutputBlockItemGroup }
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function TOutputBlockItem.GetCount: integer;
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begin
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Result := Length(FItemData^.FSubItems);
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end;
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function TOutputBlockItem.GetItem(index: integer): POutputBlockItemData;
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begin
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if (index >= 0) and (index < Length(FItemData^.FSubItems)) then
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Result := FItemData^.FSubItems[index]
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else
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with FirebirdClientAPI do
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IBError(ibxeOutputBlockIndexError,[index]);
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end;
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function TOutputBlockItem.Find(ItemType: byte): POutputBlockItemData;
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var i: integer;
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begin
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Result := nil;
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for i := 0 to GetCount - 1 do
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if FItemData^.FSubItems[i]^.FBufPtr^ = char(ItemType) then
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begin
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Result := FItemData^.FSubItems[i];
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Exit;
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end;
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end;
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{ TOutputBlockItem }
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procedure TOutputBlockItem.SetString(out S: AnsiString; Buf: PAnsiChar;
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Len: SizeInt; CodePage: TSystemCodePage);
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var rs: RawByteString;
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begin
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system.SetString(rs,Buf,len);
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SetCodePage(rs,CodePage,false);
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S := rs;
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end;
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constructor TOutputBlockItem.Create(AOwner: TOutputBlock;
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Data: POutputBlockItemData);
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begin
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inherited Create;
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FOwner := AOwner;
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FOwnerIntf := AOwner;
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FItemData := Data;
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end;
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function TOutputBlockItem.getItemType: byte;
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begin
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Result := byte(FItemData^.FBufPtr^);
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end;
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function TOutputBlockItem.getSize: integer;
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begin
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Result := FItemData^.FDataLength;
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end;
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procedure TOutputBlockItem.getRawBytes(var Buffer);
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begin
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with FItemData^ do
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Move(FBufPtr^,Buffer,FDatalength);
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end;
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function TOutputBlockItem.getAsInteger: integer;
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var len: integer;
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begin
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with FItemData^ do
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case FDataType of
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dtIntegerFixed:
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with FirebirdClientAPI do
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Result := DecodeInteger(FBufPtr+1,4);
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dtByte,
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dtInteger:
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with FirebirdClientAPI do
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begin
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len := DecodeInteger(FBufPtr+1,2);
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Result := DecodeInteger(FBufPtr+3,len);
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end;
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else
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IBError(ibxeOutputBlockTypeError,[nil]);
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end;
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end;
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function TOutputBlockItem.getParamType: byte;
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begin
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Result := byte(FItemData^.FBufPtr^)
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end;
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357 |
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function TOutputBlockItem.getAsString: string;
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var len: integer;
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begin
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Result := '';
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with FItemData^ do
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case FDataType of
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dtInteger:
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Result := IntToStr(getAsInteger);
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dtByte:
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Result := IntToStr(getAsByte);
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dtString:
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begin
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len := byte((FBufPtr+1)^);
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SetString(Result,FBufPtr+2,len,CP_ACP);
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end;
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dtString2:
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begin
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with FirebirdClientAPI do
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len := DecodeInteger(FBufPtr+1,2);
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SetString(Result,FBufPtr+3,len,CP_ACP);
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end;
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else
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IBError(ibxeOutputBlockTypeError,[nil]);
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end;
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end;
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function TOutputBlockItem.getAsByte: byte;
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begin
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with FItemData^ do
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if FDataType = dtByte then
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Result := byte((FBufPtr+2)^)
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else
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IBError(ibxeOutputBlockTypeError,[nil]);
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end;
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392 |
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393 |
function TOutputBlockItem.getAsBytes: TByteArray;
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var i: integer;
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P: PChar;
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396 |
begin
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397 |
with FItemData^ do
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398 |
if FDataType = dtBytes then
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399 |
begin
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SetLength(Result,FDataLength);
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401 |
P := FBufPtr;
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402 |
for i := 0 to FDataLength - 1 do
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403 |
begin
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404 |
Result[i] := byte(P^);
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405 |
Inc(P);
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406 |
end
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407 |
end
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408 |
else
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IBError(ibxeOutputBlockTypeError,[nil]);
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410 |
end;
|
411 |
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412 |
function TOutputBlockItem.CopyTo(stream: TStream; count: integer): integer;
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413 |
var len: integer;
|
414 |
begin
|
415 |
if count < 0 then count := 0;
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416 |
with FItemData^ do
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417 |
begin
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418 |
case FDataType of
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419 |
dtString:
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420 |
begin
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421 |
len := byte((FBufPtr+1)^);
|
422 |
if (count > 0) and (count < len) then len := count;
|
423 |
Result := stream.Write((FBufPtr+2)^,len);
|
424 |
end;
|
425 |
dtString2:
|
426 |
begin
|
427 |
with FirebirdClientAPI do
|
428 |
len := DecodeInteger(FBufPtr+1,2);
|
429 |
if (count > 0) and (count < len) then len := count;
|
430 |
Result := stream.Write((FBufPtr+3)^,len);
|
431 |
end;
|
432 |
else
|
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IBError(ibxeOutputBlockTypeError,[nil]);
|
434 |
end;
|
435 |
end;
|
436 |
end;
|
437 |
|
438 |
{ TOutputBlock }
|
439 |
|
440 |
procedure TOutputBlock.ParseBuffer;
|
441 |
begin
|
442 |
if not FBufferParsed then
|
443 |
begin
|
444 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
445 |
PrintBuf;
|
446 |
{$ENDIF}
|
447 |
DoParseBuffer;
|
448 |
if FError or FTruncated then
|
449 |
SetLength(FItems,Length(FItems)-1);
|
450 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
451 |
FormattedPrint(FItems,'');
|
452 |
{$ENDIF}
|
453 |
end;
|
454 |
FBufferParsed := true;
|
455 |
end;
|
456 |
|
457 |
function TOutputBlock.AddItem(BufPtr: PChar): POutputBlockItemData;
|
458 |
begin
|
459 |
new(Result);
|
460 |
with Result^ do
|
461 |
begin
|
462 |
FDataType := dtNone;
|
463 |
FBufPtr := BufPtr;
|
464 |
FDataLength := 0;
|
465 |
FSize := 1;
|
466 |
SetLength(FSubItems,0);
|
467 |
end;
|
468 |
end;
|
469 |
|
470 |
function TOutputBlock.AddIntegerItem(BufPtr: PChar): POutputBlockItemData;
|
471 |
begin
|
472 |
new(Result);
|
473 |
with Result^ do
|
474 |
begin
|
475 |
FDataType := FIntegerType;
|
476 |
FBufPtr := BufPtr;
|
477 |
if FDataType = dtIntegerFixed then
|
478 |
begin
|
479 |
FDataLength := 4;
|
480 |
FSize := 5;
|
481 |
end
|
482 |
else
|
483 |
begin
|
484 |
with FirebirdClientAPI do
|
485 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
486 |
FSize := FDataLength + 3;
|
487 |
end;
|
488 |
SetLength(FSubItems,0);
|
489 |
end;
|
490 |
end;
|
491 |
|
492 |
function TOutputBlock.AddStringItem(BufPtr: PChar): POutputBlockItemData;
|
493 |
begin
|
494 |
new(Result);
|
495 |
with Result^ do
|
496 |
begin
|
497 |
FDataType := dtString2;
|
498 |
FBufPtr := BufPtr;
|
499 |
with FirebirdClientAPI do
|
500 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
501 |
FSize := FDataLength + 3;
|
502 |
SetLength(FSubItems,0);
|
503 |
end;
|
504 |
end;
|
505 |
|
506 |
function TOutputBlock.AddShortStringItem(BufPtr: PChar): POutputBlockItemData;
|
507 |
begin
|
508 |
new(Result);
|
509 |
with Result^ do
|
510 |
begin
|
511 |
FDataType := dtString;
|
512 |
FBufPtr := BufPtr;
|
513 |
FDataLength := byte((FBufPtr+1)^);
|
514 |
FSize := FDataLength + 2;
|
515 |
SetLength(FSubItems,0);
|
516 |
end;
|
517 |
end;
|
518 |
|
519 |
function TOutputBlock.AddByteItem(BufPtr: PChar): POutputBlockItemData;
|
520 |
begin
|
521 |
new(Result);
|
522 |
with Result^ do
|
523 |
begin
|
524 |
FDataType := dtByte;
|
525 |
FBufPtr := BufPtr;
|
526 |
FDataLength := 1;
|
527 |
FSize := 2;
|
528 |
SetLength(FSubItems,0);
|
529 |
end;
|
530 |
end;
|
531 |
|
532 |
function TOutputBlock.AddBytesItem(BufPtr: PChar): POutputBlockItemData;
|
533 |
begin
|
534 |
new(Result);
|
535 |
with Result^ do
|
536 |
begin
|
537 |
FDataType := dtBytes;
|
538 |
FBufPtr := BufPtr;
|
539 |
with FirebirdClientAPI do
|
540 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
541 |
FSize := FDataLength + 3;
|
542 |
SetLength(FSubItems,0);
|
543 |
end;
|
544 |
end;
|
545 |
|
546 |
function TOutputBlock.AddListItem(BufPtr: PChar): POutputBlockItemData;
|
547 |
begin
|
548 |
new(Result);
|
549 |
with Result^ do
|
550 |
begin
|
551 |
FDataType := dtList;
|
552 |
FBufPtr := BufPtr;
|
553 |
FSize := FBuffer + FBufSize - FBufPtr;
|
554 |
FDataLength := FSize - 1;
|
555 |
SetLength(FSubItems,0);
|
556 |
end;
|
557 |
end;
|
558 |
|
559 |
function TOutputBlock.AddSpecialItem(BufPtr: PChar): POutputBlockItemData;
|
560 |
begin
|
561 |
new(Result);
|
562 |
with Result^ do
|
563 |
begin
|
564 |
FDataType := dtSpecial;
|
565 |
FBufPtr := BufPtr;
|
566 |
FSize := FBuffer + FBufSize - FBufPtr;
|
567 |
FDataLength := FSize - 1;
|
568 |
SetLength(FSubItems,0);
|
569 |
end;
|
570 |
end;
|
571 |
|
572 |
constructor TOutputBlock.Create(aSize: integer);
|
573 |
begin
|
574 |
inherited Create;
|
575 |
FBufSize := aSize;
|
576 |
GetMem(FBuffer,aSize);
|
577 |
if FBuffer = nil then
|
578 |
OutOfMemoryError;
|
579 |
FillChar(FBuffer^,aSize,255);
|
580 |
FBufferParsed := false;
|
581 |
FIntegerType := dtIntegerFixed;
|
582 |
end;
|
583 |
|
584 |
destructor TOutputBlock.Destroy;
|
585 |
var i, j: integer;
|
586 |
begin
|
587 |
for i := 0 to length(FItems) - 1 do
|
588 |
begin
|
589 |
for j := 0 to Length(FItems[i]^.FSubItems) -1 do
|
590 |
dispose(FItems[i]^.FSubItems[j]);
|
591 |
dispose(FItems[i]);
|
592 |
end;
|
593 |
FreeMem(FBuffer);
|
594 |
inherited Destroy;
|
595 |
end;
|
596 |
|
597 |
function TOutputBlock.Buffer: PChar;
|
598 |
begin
|
599 |
Result := FBuffer;
|
600 |
end;
|
601 |
|
602 |
function TOutputBlock.getBufSize: integer;
|
603 |
begin
|
604 |
Result := FBufSize;
|
605 |
end;
|
606 |
|
607 |
function TOutputBlock.GetCount: integer;
|
608 |
begin
|
609 |
ParseBuffer;
|
610 |
Result := length(FItems);
|
611 |
end;
|
612 |
|
613 |
function TOutputBlock.GetItem(index: integer): POutputBlockItemData;
|
614 |
begin
|
615 |
ParseBuffer;
|
616 |
if (index >= 0) and (index < Length(FItems)) then
|
617 |
Result := FItems[index]
|
618 |
else
|
619 |
IBError(ibxeOutputBlockIndexError,[index]);
|
620 |
end;
|
621 |
|
622 |
function TOutputBlock.Find(ItemType: byte): POutputBlockItemData;
|
623 |
var i: integer;
|
624 |
begin
|
625 |
Result := nil;
|
626 |
for i := 0 to getCount - 1 do
|
627 |
if FItems[i]^.FBufPtr^ = char(ItemType) then
|
628 |
begin
|
629 |
Result := FItems[i];
|
630 |
Exit;
|
631 |
end;
|
632 |
end;
|
633 |
|
634 |
{$IFDEF DEBUGOUTPUTBLOCK}
|
635 |
procedure TOutputBlock.FormattedPrint(
|
636 |
const aItems: array of POutputBlockItemData; Indent: string);
|
637 |
|
638 |
var i: integer;
|
639 |
item: TOutputBlockItem;
|
640 |
begin
|
641 |
if FError then
|
642 |
writeln('Error')
|
643 |
else
|
644 |
if FTruncated then
|
645 |
writeln('Truncated')
|
646 |
else
|
647 |
for i := 0 to Length(aItems) - 1 do
|
648 |
with aItems[i]^ do
|
649 |
begin
|
650 |
if FError then
|
651 |
writeln('Error')
|
652 |
else
|
653 |
if FTruncated then
|
654 |
writeln('Truncated')
|
655 |
else
|
656 |
case FDataType of
|
657 |
dtList:
|
658 |
begin
|
659 |
writeln(Indent,'ItemType = ',byte(FBufPtr^));
|
660 |
FormattedPrint(FSubItems,Indent + ' ');
|
661 |
end;
|
662 |
dtSpecial:
|
663 |
writeln(Indent,'ItemType = ',byte(FBufPtr^),' Length = ',FSize);
|
664 |
else
|
665 |
begin
|
666 |
item := TOutputBlockItem.Create(self,(aItems[i]));
|
667 |
writeln(Indent,'ItemType = ',byte(FBufPtr^),' Value = ',(item as TOutputBlockItem).GetAsString);
|
668 |
end;
|
669 |
end;
|
670 |
end;
|
671 |
end;
|
672 |
{$ENDIF}
|
673 |
|
674 |
procedure TOutputBlock.PrintBuf;
|
675 |
var i: integer;
|
676 |
begin
|
677 |
write(classname,': ');
|
678 |
for i := 0 to getBufSize - 1 do
|
679 |
begin
|
680 |
write(Format('%x ',[byte(Buffer[i])]));
|
681 |
if byte(FBuffer[i]) = isc_info_end then break;
|
682 |
end;
|
683 |
writeln;
|
684 |
end;
|
685 |
|
686 |
{ TDBInfoItem }
|
687 |
|
688 |
procedure TDBInfoItem.DecodeIDCluster(var ConnectionType: integer;
|
689 |
var DBFileName, DBSiteName: string);
|
690 |
var P: PChar;
|
691 |
begin
|
692 |
with ItemData^ do
|
693 |
if FBufPtr^ = char(isc_info_db_id) then
|
694 |
begin
|
695 |
P := FBufPtr + 3;
|
696 |
if FDataLength > 0 then
|
697 |
ConnectionType := integer(P^);
|
698 |
Inc(P);
|
699 |
SetString(DBFileName,P+1,byte(P^),CP_ACP);
|
700 |
P += Length(DBFileName) + 1;
|
701 |
SetString(DBSiteName,P+1,byte(P^),CP_ACP);
|
702 |
end
|
703 |
else
|
704 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
705 |
end;
|
706 |
|
707 |
procedure TDBInfoItem.DecodeVersionString(var Version: byte;
|
708 |
var VersionString: string);
|
709 |
var P: PChar;
|
710 |
begin
|
711 |
with ItemData^ do
|
712 |
if FBufPtr^ = char(isc_info_version) then
|
713 |
begin
|
714 |
P := FBufPtr+3;
|
715 |
VersionString := '';
|
716 |
Version := byte(P^);
|
717 |
Inc(P);
|
718 |
SetString(VersionString,P+1,byte(P^),CP_ACP);
|
719 |
end
|
720 |
else
|
721 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
722 |
end;
|
723 |
|
724 |
procedure TDBInfoItem.DecodeUserNames(UserNames: TStrings);
|
725 |
var P: PChar;
|
726 |
s: string;
|
727 |
begin
|
728 |
with ItemData^ do
|
729 |
if FBufPtr^ = char(isc_info_user_names) then
|
730 |
begin
|
731 |
P := FBufPtr+3;
|
732 |
while (P < FBufPtr + FSize) do
|
733 |
begin
|
734 |
SetString(s,P+1,byte(P^),CP_ACP);
|
735 |
UserNames.Add(s);
|
736 |
P += Length(s) + 1;
|
737 |
end;
|
738 |
end
|
739 |
else
|
740 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
741 |
end;
|
742 |
|
743 |
function TDBInfoItem.getOperationCounts: TDBOperationCounts;
|
744 |
var tableCounts: integer;
|
745 |
P: PChar;
|
746 |
i: integer;
|
747 |
begin
|
748 |
with ItemData^ do
|
749 |
if byte(FBufPtr^) in [isc_info_backout_count, isc_info_delete_count,
|
750 |
isc_info_expunge_count,isc_info_insert_count, isc_info_purge_count,
|
751 |
isc_info_read_idx_count, isc_info_read_seq_count, isc_info_update_count] then
|
752 |
begin
|
753 |
tableCounts := FDataLength div 6;
|
754 |
SetLength(Result,TableCounts);
|
755 |
P := FBufPtr + 3;
|
756 |
for i := 0 to TableCounts -1 do
|
757 |
with FirebirdClientAPI do
|
758 |
begin
|
759 |
Result[i].TableID := DecodeInteger(P,2);
|
760 |
Inc(P,2);
|
761 |
Result[i].Count := DecodeInteger(P,4);
|
762 |
Inc(P,4);
|
763 |
end;
|
764 |
end
|
765 |
else
|
766 |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]);
|
767 |
end;
|
768 |
|
769 |
{ TDBInformation }
|
770 |
|
771 |
function TDBInformation.AddSpecialItem(BufPtr: PChar): POutputBlockItemData;
|
772 |
begin
|
773 |
Result := inherited AddSpecialItem(BufPtr);
|
774 |
with Result^ do
|
775 |
begin
|
776 |
with FirebirdClientAPI do
|
777 |
FDataLength := DecodeInteger(FBufPtr+1,2);
|
778 |
FSize := FDataLength + 3;
|
779 |
end;
|
780 |
end;
|
781 |
|
782 |
procedure TDBInformation.DoParseBuffer;
|
783 |
var P: PChar;
|
784 |
index: integer;
|
785 |
begin
|
786 |
P := Buffer;
|
787 |
index := 0;
|
788 |
SetLength(FItems,0);
|
789 |
while (P^ <> char(isc_info_end)) and (P < Buffer + getBufSize) do
|
790 |
begin
|
791 |
SetLength(FItems,index+1);
|
792 |
case byte(P^) of
|
793 |
isc_info_no_reserve,
|
794 |
isc_info_allocation,
|
795 |
isc_info_ods_minor_version,
|
796 |
isc_info_ods_version,
|
797 |
isc_info_db_SQL_dialect,
|
798 |
isc_info_page_size,
|
799 |
isc_info_current_memory,
|
800 |
isc_info_forced_writes,
|
801 |
isc_info_max_memory,
|
802 |
isc_info_num_buffers,
|
803 |
isc_info_sweep_interval,
|
804 |
isc_info_fetches,
|
805 |
isc_info_marks,
|
806 |
isc_info_reads,
|
807 |
isc_info_writes:
|
808 |
FItems[index] := AddIntegerItem(P);
|
809 |
|
810 |
isc_info_implementation,
|
811 |
isc_info_base_level:
|
812 |
FItems[index] := AddBytesItem(P);
|
813 |
|
814 |
isc_info_db_id,
|
815 |
isc_info_version,
|
816 |
isc_info_backout_count,
|
817 |
isc_info_delete_count,
|
818 |
isc_info_expunge_count,
|
819 |
isc_info_insert_count,
|
820 |
isc_info_purge_count,
|
821 |
isc_info_read_idx_count,
|
822 |
isc_info_read_seq_count,
|
823 |
isc_info_update_count,
|
824 |
isc_info_user_names:
|
825 |
FItems[index] := AddSpecialItem(P);
|
826 |
|
827 |
else
|
828 |
FItems[index] := AddSpecialItem(P);
|
829 |
end;
|
830 |
P += FItems[index]^.FSize;
|
831 |
Inc(index);
|
832 |
end;
|
833 |
end;
|
834 |
|
835 |
constructor TDBInformation.Create(aSize: integer);
|
836 |
begin
|
837 |
inherited Create(aSize);
|
838 |
FIntegerType := dtInteger;
|
839 |
end;
|
840 |
|
841 |
{ TServiceQueryResults }
|
842 |
|
843 |
function TServiceQueryResults.AddListItem(BufPtr: PChar): POutputBlockItemData;
|
844 |
var P: PChar;
|
845 |
i: integer;
|
846 |
group: byte;
|
847 |
begin
|
848 |
Result := inherited AddListItem(BufPtr);
|
849 |
P := BufPtr + 1;
|
850 |
i := 0;
|
851 |
group := byte(BufPtr^);
|
852 |
if group in [isc_info_svc_get_users,isc_info_svc_limbo_trans] then
|
853 |
begin
|
854 |
with FirebirdClientAPI do
|
855 |
Result^.FSize := DecodeInteger(P,2) + 3;
|
856 |
Inc(P,2);
|
857 |
end;
|
858 |
with Result^ do
|
859 |
begin
|
860 |
while (P < FBufPtr + FSize) and (P^ <> char(isc_info_flag_end)) do
|
861 |
begin
|
862 |
SetLength(FSubItems,i+1);
|
863 |
case group of
|
864 |
isc_info_svc_svr_db_info:
|
865 |
case integer(P^) of
|
866 |
isc_spb_num_att,
|
867 |
isc_spb_num_db:
|
868 |
FSubItems[i] := AddIntegerItem(P);
|
869 |
|
870 |
isc_spb_dbname:
|
871 |
FSubItems[i] := AddStringItem(P);
|
872 |
|
873 |
else
|
874 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
875 |
end;
|
876 |
|
877 |
isc_info_svc_get_license:
|
878 |
case integer(P^) of
|
879 |
isc_spb_lic_id,
|
880 |
isc_spb_lic_key:
|
881 |
FSubItems[i] := AddIntegerItem(P);
|
882 |
else
|
883 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
884 |
end;
|
885 |
|
886 |
isc_info_svc_limbo_trans:
|
887 |
case integer(P^) of
|
888 |
isc_spb_tra_id,
|
889 |
isc_spb_single_tra_id,
|
890 |
isc_spb_multi_tra_id:
|
891 |
FSubItems[i] := AddIntegerItem(P);
|
892 |
|
893 |
isc_spb_tra_host_site,
|
894 |
isc_spb_tra_remote_site,
|
895 |
isc_spb_tra_db_path:
|
896 |
FSubItems[i] := AddStringItem(P);
|
897 |
|
898 |
isc_spb_tra_advise,
|
899 |
isc_spb_tra_state:
|
900 |
FSubItems[i] := AddByteItem(P);
|
901 |
else
|
902 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
903 |
end;
|
904 |
|
905 |
isc_info_svc_get_users:
|
906 |
case integer(P^) of
|
907 |
isc_spb_sec_userid,
|
908 |
isc_spb_sec_groupid:
|
909 |
FSubItems[i] := AddIntegerItem(P);
|
910 |
|
911 |
isc_spb_sec_username,
|
912 |
isc_spb_sec_password,
|
913 |
isc_spb_sec_firstname,
|
914 |
isc_spb_sec_middlename,
|
915 |
isc_spb_sec_lastname:
|
916 |
FSubItems[i] := AddStringItem(P);
|
917 |
|
918 |
else
|
919 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
920 |
end;
|
921 |
|
922 |
end;
|
923 |
P += FSubItems[i]^.FSize;
|
924 |
Inc(i);
|
925 |
end;
|
926 |
FDataLength := 0;
|
927 |
for i := 0 to Length(FSubItems) - 1 do
|
928 |
FDataLength += FSubItems[i]^.FSize;
|
929 |
if group in [isc_info_svc_get_users,isc_info_svc_limbo_trans] then
|
930 |
Exit;
|
931 |
|
932 |
if (P < FBufPtr + FSize) and (P^ = char(isc_info_flag_end)) then
|
933 |
FSize := FDataLength + 2 {include start and end flag}
|
934 |
else
|
935 |
FSize := FDataLength + 1; {start flag only}
|
936 |
end;
|
937 |
end;
|
938 |
|
939 |
function TServiceQueryResults.AddSpecialItem(BufPtr: PChar
|
940 |
): POutputBlockItemData;
|
941 |
var P: PChar;
|
942 |
i: integer;
|
943 |
begin
|
944 |
Result := inherited AddSpecialItem(BufPtr);
|
945 |
with Result^ do
|
946 |
begin
|
947 |
with FirebirdClientAPI do
|
948 |
FDataLength := DecodeInteger(FBufPtr+1, 2);
|
949 |
|
950 |
P := FBufPtr + 3; {skip length bytes}
|
951 |
i := 0;
|
952 |
while P < FBufPtr + FDataLength do
|
953 |
begin
|
954 |
FSubItems[i] := AddIntegerItem(P);
|
955 |
P += FSubItems[i]^.FSize;
|
956 |
Inc(i);
|
957 |
end;
|
958 |
end;
|
959 |
end;
|
960 |
|
961 |
procedure TServiceQueryResults.DoParseBuffer;
|
962 |
var P: PChar;
|
963 |
i: integer;
|
964 |
begin
|
965 |
P := Buffer;
|
966 |
i := 0;
|
967 |
while (P < Buffer + getBufSize) and (P^ <> char(isc_info_end)) do
|
968 |
begin
|
969 |
SetLength(FItems,i+1);
|
970 |
case integer(P^) of
|
971 |
isc_info_svc_line,
|
972 |
isc_info_svc_get_env,
|
973 |
isc_info_svc_get_env_lock,
|
974 |
isc_info_svc_get_env_msg,
|
975 |
isc_info_svc_user_dbpath,
|
976 |
isc_info_svc_server_version,
|
977 |
isc_info_svc_implementation,
|
978 |
isc_info_svc_to_eof:
|
979 |
FItems[i] := AddStringItem(P);
|
980 |
|
981 |
isc_info_svc_get_license_mask,
|
982 |
isc_info_svc_capabilities,
|
983 |
isc_info_svc_version,
|
984 |
isc_info_svc_running,
|
985 |
isc_info_svc_stdin:
|
986 |
FItems[i] := AddIntegerItem(P);
|
987 |
|
988 |
isc_info_svc_timeout,
|
989 |
isc_info_data_not_ready,
|
990 |
isc_info_truncated:
|
991 |
FItems[i] := AddItem(P);
|
992 |
|
993 |
isc_info_svc_svr_db_info,
|
994 |
isc_info_svc_get_license,
|
995 |
isc_info_svc_limbo_trans,
|
996 |
isc_info_svc_get_users:
|
997 |
FItems[i] := AddListItem(P);
|
998 |
|
999 |
isc_info_svc_get_config:
|
1000 |
FItems[i] := AddSpecialItem(P);
|
1001 |
|
1002 |
|
1003 |
else
|
1004 |
IBError(ibxeOutputParsingError, [integer(P^)]);
|
1005 |
end;
|
1006 |
P += FItems[i]^.FSize;
|
1007 |
Inc(i);
|
1008 |
end;
|
1009 |
end;
|
1010 |
|
1011 |
{ TSQLInfoResultsBuffer }
|
1012 |
|
1013 |
function TSQLInfoResultsBuffer.AddListItem(BufPtr: PChar): POutputBlockItemData;
|
1014 |
var P: PChar;
|
1015 |
i: integer;
|
1016 |
begin
|
1017 |
Result := inherited AddListItem(BufPtr);
|
1018 |
P := BufPtr + 1;
|
1019 |
i := 0;
|
1020 |
|
1021 |
if byte(BufPtr^) = isc_info_sql_records then
|
1022 |
begin
|
1023 |
with FirebirdClientAPI do
|
1024 |
Result^.FSize := DecodeInteger(P,2) + 3;
|
1025 |
Inc(P,2);
|
1026 |
with Result^ do
|
1027 |
begin
|
1028 |
while (P < FBufPtr + FSize) and (byte(P^) <> isc_info_end) do
|
1029 |
begin
|
1030 |
SetLength(FSubItems,i+1);
|
1031 |
case integer(P^) of
|
1032 |
isc_info_req_select_count,
|
1033 |
isc_info_req_insert_count,
|
1034 |
isc_info_req_update_count,
|
1035 |
isc_info_req_delete_count:
|
1036 |
FSubItems[i] := AddIntegerItem(P);
|
1037 |
|
1038 |
isc_info_truncated:
|
1039 |
begin
|
1040 |
FTruncated := true;
|
1041 |
Exit;
|
1042 |
end;
|
1043 |
|
1044 |
isc_info_error:
|
1045 |
begin
|
1046 |
FError := true;
|
1047 |
Exit;
|
1048 |
end;
|
1049 |
else
|
1050 |
FSubItems[i] := AddSpecialItem(P);
|
1051 |
end;
|
1052 |
P += FSubItems[i]^.FSize;
|
1053 |
Inc(i);
|
1054 |
end;
|
1055 |
end;
|
1056 |
end;
|
1057 |
end;
|
1058 |
|
1059 |
procedure TSQLInfoResultsBuffer.DoParseBuffer;
|
1060 |
var P: PChar;
|
1061 |
index: integer;
|
1062 |
begin
|
1063 |
P := Buffer;
|
1064 |
index := 0;
|
1065 |
SetLength(FItems,0);
|
1066 |
while (P^ <> char(isc_info_end)) and (P < Buffer + getBufSize) do
|
1067 |
begin
|
1068 |
SetLength(FItems,index+1);
|
1069 |
case byte(P^) of
|
1070 |
isc_info_sql_stmt_type:
|
1071 |
FItems[index] := AddIntegerItem(P);
|
1072 |
|
1073 |
isc_info_sql_get_plan:
|
1074 |
FItems[index] := AddStringItem(P);
|
1075 |
|
1076 |
isc_info_sql_records:
|
1077 |
FItems[index] := AddListItem(P);
|
1078 |
|
1079 |
isc_info_truncated:
|
1080 |
begin
|
1081 |
FTruncated := true;
|
1082 |
Exit;
|
1083 |
end;
|
1084 |
|
1085 |
isc_info_error:
|
1086 |
begin
|
1087 |
FError := true;
|
1088 |
Exit;
|
1089 |
end;
|
1090 |
|
1091 |
else
|
1092 |
FItems[index] := AddSpecialItem(P);
|
1093 |
end;
|
1094 |
P += FItems[index]^.FSize;
|
1095 |
Inc(index);
|
1096 |
end;
|
1097 |
end;
|
1098 |
|
1099 |
constructor TSQLInfoResultsBuffer.Create(aSize: integer);
|
1100 |
begin
|
1101 |
inherited Create(aSize);
|
1102 |
FIntegerType := dtInteger;
|
1103 |
end;
|
1104 |
|
1105 |
end.
|
1106 |
|