diff options
Diffstat (limited to '')
-rw-r--r-- | src/lib/TntUnicodeControls/TntClasses.pas | 1799 |
1 files changed, 0 insertions, 1799 deletions
diff --git a/src/lib/TntUnicodeControls/TntClasses.pas b/src/lib/TntUnicodeControls/TntClasses.pas deleted file mode 100644 index be043421..00000000 --- a/src/lib/TntUnicodeControls/TntClasses.pas +++ /dev/null @@ -1,1799 +0,0 @@ - -{*****************************************************************************} -{ } -{ Tnt Delphi Unicode Controls } -{ http://www.tntware.com/delphicontrols/unicode/ } -{ Version: 2.3.0 } -{ } -{ Copyright (c) 2002-2007, Troy Wolbrink (troy.wolbrink@tntware.com) } -{ } -{*****************************************************************************} - -unit TntClasses; - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$INCLUDE TntCompilers.inc} - -interface - -{ TODO: Consider: TTntRegIniFile, TTntMemIniFile (consider if UTF8 fits into this solution). } - -{***********************************************} -{ WideChar-streaming implemented by Maël Hörz } -{***********************************************} - -uses - Classes, SysUtils, Windows, - {$IFNDEF COMPILER_10_UP} - TntWideStrings, - {$ELSE} - WideStrings, - {$ENDIF} - ActiveX, Contnrs; - -// ......... introduced ......... -type - TTntStreamCharSet = (csAnsi, csUnicode, csUnicodeSwapped, csUtf8); - -function AutoDetectCharacterSet(Stream: TStream): TTntStreamCharSet; - -//--------------------------------------------------------------------------------------------- -// Tnt - Classes -//--------------------------------------------------------------------------------------------- - -{TNT-WARN ExtractStrings} -{TNT-WARN LineStart} -{TNT-WARN TStringStream} // TODO: Implement a TWideStringStream - -// A potential implementation of TWideStringStream can be found at: -// http://kdsxml.cvs.sourceforge.net/kdsxml/Global/KDSClasses.pas?revision=1.10&view=markup - -procedure TntPersistent_AfterInherited_DefineProperties(Filer: TFiler; Instance: TPersistent); - -type -{TNT-WARN TFileStream} - TTntFileStream = class(THandleStream) - public - constructor Create(const FileName: WideString; Mode: Word); - destructor Destroy; override; - end; - -{TNT-WARN TMemoryStream} - TTntMemoryStream = class(TMemoryStream{TNT-ALLOW TMemoryStream}) - public - procedure LoadFromFile(const FileName: WideString); - procedure SaveToFile(const FileName: WideString); - end; - -{TNT-WARN TResourceStream} - TTntResourceStream = class(TCustomMemoryStream) - private - HResInfo: HRSRC; - HGlobal: THandle; - procedure Initialize(Instance: THandle; Name, ResType: PWideChar); - public - constructor Create(Instance: THandle; const ResName: WideString; ResType: PWideChar); - constructor CreateFromID(Instance: THandle; ResID: Word; ResType: PWideChar); - destructor Destroy; override; - function Write(const Buffer; Count: Longint): Longint; override; - procedure SaveToFile(const FileName: WideString); - end; - - TTntStrings = class; - -{TNT-WARN TAnsiStrings} - TAnsiStrings{TNT-ALLOW TAnsiStrings} = class(TStrings{TNT-ALLOW TStrings}) - public - procedure LoadFromFile(const FileName: WideString); reintroduce; - procedure SaveToFile(const FileName: WideString); reintroduce; - procedure LoadFromFileEx(const FileName: WideString; CodePage: Cardinal); - procedure SaveToFileEx(const FileName: WideString; CodePage: Cardinal); - procedure LoadFromStreamEx(Stream: TStream; CodePage: Cardinal); virtual; abstract; - procedure SaveToStreamEx(Stream: TStream; CodePage: Cardinal); virtual; abstract; - end; - - TAnsiStringsForWideStringsAdapter = class(TAnsiStrings{TNT-ALLOW TAnsiStrings}) - private - FWideStrings: TTntStrings; - FAdapterCodePage: Cardinal; - protected - function Get(Index: Integer): AnsiString; override; - procedure Put(Index: Integer; const S: AnsiString); override; - function GetCount: Integer; override; - function GetObject(Index: Integer): TObject; override; - procedure PutObject(Index: Integer; AObject: TObject); override; - procedure SetUpdateState(Updating: Boolean); override; - function AdapterCodePage: Cardinal; dynamic; - public - constructor Create(AWideStrings: TTntStrings; _AdapterCodePage: Cardinal = 0); - procedure Clear; override; - procedure Delete(Index: Integer); override; - procedure Insert(Index: Integer; const S: AnsiString); override; - procedure LoadFromStreamEx(Stream: TStream; CodePage: Cardinal); override; - procedure SaveToStreamEx(Stream: TStream; CodePage: Cardinal); override; - end; - -{TNT-WARN TStrings} - TTntStrings = class(TWideStrings) - private - FLastFileCharSet: TTntStreamCharSet; - FAnsiStrings: TAnsiStrings{TNT-ALLOW TAnsiStrings}; - procedure SetAnsiStrings(const Value: TAnsiStrings{TNT-ALLOW TAnsiStrings}); - procedure ReadData(Reader: TReader); - procedure ReadDataUTF7(Reader: TReader); - procedure ReadDataUTF8(Reader: TReader); - procedure WriteDataUTF7(Writer: TWriter); - protected - procedure DefineProperties(Filer: TFiler); override; - public - constructor Create; - destructor Destroy; override; - - procedure LoadFromFile(const FileName: WideString); override; - procedure LoadFromStream(Stream: TStream); override; - procedure LoadFromStream_BOM(Stream: TStream; WithBOM: Boolean); virtual; - - procedure SaveToFile(const FileName: WideString); override; - procedure SaveToStream(Stream: TStream); override; - procedure SaveToStream_BOM(Stream: TStream; WithBOM: Boolean); virtual; - - property LastFileCharSet: TTntStreamCharSet read FLastFileCharSet; - published - property AnsiStrings: TAnsiStrings{TNT-ALLOW TAnsiStrings} read FAnsiStrings write SetAnsiStrings stored False; - end; - -{ TTntStringList class } - - TTntStringList = class; - TWideStringListSortCompare = function(List: TTntStringList; Index1, Index2: Integer): Integer; - -{TNT-WARN TStringList} - TTntStringList = class(TTntStrings) - private - FUpdating: Boolean; - FList: PWideStringItemList; - FCount: Integer; - FCapacity: Integer; - FSorted: Boolean; - FDuplicates: TDuplicates; - FCaseSensitive: Boolean; - FOnChange: TNotifyEvent; - FOnChanging: TNotifyEvent; - procedure ExchangeItems(Index1, Index2: Integer); - procedure Grow; - procedure QuickSort(L, R: Integer; SCompare: TWideStringListSortCompare); - procedure SetSorted(Value: Boolean); - procedure SetCaseSensitive(const Value: Boolean); - protected - procedure Changed; virtual; - procedure Changing; virtual; - function Get(Index: Integer): WideString; override; - function GetCapacity: Integer; override; - function GetCount: Integer; override; - function GetObject(Index: Integer): TObject; override; - procedure Put(Index: Integer; const S: WideString); override; - procedure PutObject(Index: Integer; AObject: TObject); override; - procedure SetCapacity(NewCapacity: Integer); override; - procedure SetUpdateState(Updating: Boolean); override; - function CompareStrings(const S1, S2: WideString): Integer; override; - procedure InsertItem(Index: Integer; const S: WideString; AObject: TObject); virtual; - public - destructor Destroy; override; - function Add(const S: WideString): Integer; override; - function AddObject(const S: WideString; AObject: TObject): Integer; override; - procedure Clear; override; - procedure Delete(Index: Integer); override; - procedure Exchange(Index1, Index2: Integer); override; - function Find(const S: WideString; var Index: Integer): Boolean; virtual; - function IndexOf(const S: WideString): Integer; override; - function IndexOfName(const Name: WideString): Integer; override; - procedure Insert(Index: Integer; const S: WideString); override; - procedure InsertObject(Index: Integer; const S: WideString; - AObject: TObject); override; - procedure Sort; virtual; - procedure CustomSort(Compare: TWideStringListSortCompare); virtual; - property Duplicates: TDuplicates read FDuplicates write FDuplicates; - property Sorted: Boolean read FSorted write SetSorted; - property CaseSensitive: Boolean read FCaseSensitive write SetCaseSensitive; - property OnChange: TNotifyEvent read FOnChange write FOnChange; - property OnChanging: TNotifyEvent read FOnChanging write FOnChanging; - end; - -// ......... introduced ......... -type - TListTargetCompare = function (Item, Target: Pointer): Integer; - -function FindSortedListByTarget(List: TList; TargetCompare: TListTargetCompare; - Target: Pointer; var Index: Integer): Boolean; - -function ClassIsRegistered(const clsid: TCLSID): Boolean; - -var - RuntimeUTFStreaming: Boolean; - -type - TBufferedAnsiString = class(TObject) - private - FStringBuffer: AnsiString; - LastWriteIndex: Integer; - public - procedure Clear; - procedure AddChar(const wc: AnsiChar); - procedure AddString(const s: AnsiString); - procedure AddBuffer(Buff: PAnsiChar; Chars: Integer); - function Value: AnsiString; - function BuffPtr: PAnsiChar; - end; - - TBufferedWideString = class(TObject) - private - FStringBuffer: WideString; - LastWriteIndex: Integer; - public - procedure Clear; - procedure AddChar(const wc: WideChar); - procedure AddString(const s: WideString); - procedure AddBuffer(Buff: PWideChar; Chars: Integer); - function Value: WideString; - function BuffPtr: PWideChar; - end; - - TBufferedStreamReader = class(TStream) - private - FStream: TStream; - FStreamSize: Integer; - FBuffer: array of Byte; - FBufferSize: Integer; - FBufferStartPosition: Integer; - FVirtualPosition: Integer; - procedure UpdateBufferFromPosition(StartPos: Integer); - public - constructor Create(Stream: TStream; BufferSize: Integer = 1024); - function Read(var Buffer; Count: Longint): Longint; override; - function Write(const Buffer; Count: Longint): Longint; override; - function Seek(Offset: Longint; Origin: Word): Longint; override; - end; - -// "synced" wide string -type TSetAnsiStrEvent = procedure(const Value: AnsiString) of object; -function GetSyncedWideString(var WideStr: WideString; const AnsiStr: AnsiString): WideString; -procedure SetSyncedWideString(const Value: WideString; var WideStr: WideString; - const AnsiStr: AnsiString; SetAnsiStr: TSetAnsiStrEvent); - -type - TWideComponentHelper = class(TComponent) - private - FComponent: TComponent; - protected - procedure Notification(AComponent: TComponent; Operation: TOperation); override; - public - constructor Create(AOwner: TComponent); override; - constructor CreateHelper(AOwner: TComponent; ComponentHelperList: TComponentList); - end; - -function FindWideComponentHelper(ComponentHelperList: TComponentList; Component: TComponent): TWideComponentHelper; - -implementation - -uses - RTLConsts, ComObj, Math, - Registry, TypInfo, TntSystem, TntSysUtils; - -{ TntPersistent } - -//=========================================================================== -// The Delphi 5 Classes.pas never supported the streaming of WideStrings. -// The Delphi 6 Classes.pas supports WideString streaming. But it's too bad that -// the Delphi 6 IDE doesn't use the updated Classes.pas. Switching between Form/Text -// mode corrupts extended characters in WideStrings even under Delphi 6. -// Delphi 7 seems to finally get right. But let's keep the UTF7 support at design time -// to enable sharing source code with previous versions of Delphi. -// -// The purpose of this solution is to store WideString properties which contain -// non-ASCII chars in the form of UTF7 under the old property name + '_UTF7'. -// -// Special thanks go to Francisco Leong for helping to develop this solution. -// - -{ TTntWideStringPropertyFiler } -type - TTntWideStringPropertyFiler = class - private - FInstance: TPersistent; - FPropInfo: PPropInfo; - procedure ReadDataUTF8(Reader: TReader); - procedure ReadDataUTF7(Reader: TReader); - procedure WriteDataUTF7(Writer: TWriter); - public - procedure DefineProperties(Filer: TFiler; Instance: TPersistent; PropName: AnsiString); - end; - -function ReaderNeedsUtfHelp(Reader: TReader): Boolean; -begin - if Reader.Owner = nil then - Result := False { designtime - visual form inheritance ancestor } - else if csDesigning in Reader.Owner.ComponentState then - {$IFDEF COMPILER_7_UP} - Result := False { Delphi 7+: designtime - doesn't need UTF help. } - {$ELSE} - Result := True { Delphi 6: designtime - always needs UTF help. } - {$ENDIF} - else - Result := RuntimeUTFStreaming; { runtime } -end; - -procedure TTntWideStringPropertyFiler.ReadDataUTF8(Reader: TReader); -begin - if ReaderNeedsUtfHelp(Reader) then - SetWideStrProp(FInstance, FPropInfo, UTF8ToWideString(Reader.ReadString)) - else - Reader.ReadString; { do nothing with Result } -end; - -procedure TTntWideStringPropertyFiler.ReadDataUTF7(Reader: TReader); -begin - if ReaderNeedsUtfHelp(Reader) then - SetWideStrProp(FInstance, FPropInfo, UTF7ToWideString(Reader.ReadString)) - else - Reader.ReadString; { do nothing with Result } -end; - -procedure TTntWideStringPropertyFiler.WriteDataUTF7(Writer: TWriter); -begin - Writer.WriteString(WideStringToUTF7(GetWideStrProp(FInstance, FPropInfo))); -end; - -procedure TTntWideStringPropertyFiler.DefineProperties(Filer: TFiler; Instance: TPersistent; - PropName: AnsiString); - - {$IFNDEF COMPILER_7_UP} - function HasData: Boolean; - var - CurrPropValue: WideString; - begin - // must be stored - Result := IsStoredProp(Instance, FPropInfo); - if Result - and (Filer.Ancestor <> nil) - and (GetPropInfo(Filer.Ancestor, PropName, [tkWString]) <> nil) then - begin - // must be different than ancestor - CurrPropValue := GetWideStrProp(Instance, FPropInfo); - Result := CurrPropValue <> GetWideStrProp(Filer.Ancestor, GetPropInfo(Filer.Ancestor, PropName)); - end; - if Result then begin - // must be non-blank and different than UTF8 (implies all ASCII <= 127) - CurrPropValue := GetWideStrProp(Instance, FPropInfo); - Result := (CurrPropValue <> '') and (WideStringToUTF8(CurrPropValue) <> CurrPropValue); - end; - end; - {$ENDIF} - -begin - FInstance := Instance; - FPropInfo := GetPropInfo(Instance, PropName, [tkWString]); - if FPropInfo <> nil then begin - // must be published (and of type WideString) - Filer.DefineProperty(PropName + 'W', ReadDataUTF8, nil, False); - {$IFDEF COMPILER_7_UP} - Filer.DefineProperty(PropName + '_UTF7', ReadDataUTF7, WriteDataUTF7, False); - {$ELSE} - Filer.DefineProperty(PropName + '_UTF7', ReadDataUTF7, WriteDataUTF7, HasData); - {$ENDIF} - end; - FInstance := nil; - FPropInfo := nil; -end; - -{ TTntWideCharPropertyFiler } -type - TTntWideCharPropertyFiler = class - private - FInstance: TPersistent; - FPropInfo: PPropInfo; - {$IFNDEF COMPILER_9_UP} - FWriter: TWriter; - procedure GetLookupInfo(var Ancestor: TPersistent; - var Root, LookupRoot, RootAncestor: TComponent); - {$ENDIF} - procedure ReadData_W(Reader: TReader); - procedure ReadDataUTF7(Reader: TReader); - procedure WriteData_W(Writer: TWriter); - function ReadChar(Reader: TReader): WideChar; - public - procedure DefineProperties(Filer: TFiler; Instance: TPersistent; PropName: AnsiString); - end; - -{$IFNDEF COMPILER_9_UP} -type - TGetLookupInfoEvent = procedure(var Ancestor: TPersistent; - var Root, LookupRoot, RootAncestor: TComponent) of object; - -function AncestorIsValid(Ancestor: TPersistent; Root, RootAncestor: TComponent): Boolean; -begin - Result := (Ancestor <> nil) and (RootAncestor <> nil) and - Root.InheritsFrom(RootAncestor.ClassType); -end; - -function IsDefaultOrdPropertyValue(Instance: TObject; PropInfo: PPropInfo; - OnGetLookupInfo: TGetLookupInfoEvent): Boolean; -var - Ancestor: TPersistent; - LookupRoot: TComponent; - RootAncestor: TComponent; - Root: TComponent; - AncestorValid: Boolean; - Value: Longint; - Default: LongInt; -begin - Ancestor := nil; - Root := nil; - LookupRoot := nil; - RootAncestor := nil; - - if Assigned(OnGetLookupInfo) then - OnGetLookupInfo(Ancestor, Root, LookupRoot, RootAncestor); - - AncestorValid := AncestorIsValid(Ancestor, Root, RootAncestor); - - Result := True; - if (PropInfo^.GetProc <> nil) and (PropInfo^.SetProc <> nil) then - begin - Value := GetOrdProp(Instance, PropInfo); - if AncestorValid then - Result := Value = GetOrdProp(Ancestor, PropInfo) - else - begin - Default := PPropInfo(PropInfo)^.Default; - Result := (Default <> LongInt($80000000)) and (Value = Default); - end; - end; -end; - -procedure TTntWideCharPropertyFiler.GetLookupInfo(var Ancestor: TPersistent; - var Root, LookupRoot, RootAncestor: TComponent); -begin - Ancestor := FWriter.Ancestor; - Root := FWriter.Root; - LookupRoot := FWriter.LookupRoot; - RootAncestor := FWriter.RootAncestor; -end; -{$ENDIF} - -function TTntWideCharPropertyFiler.ReadChar(Reader: TReader): WideChar; -var - Temp: WideString; -begin - case Reader.NextValue of - vaWString: - Temp := Reader.ReadWideString; - vaString: - Temp := Reader.ReadString; - else - raise EReadError.Create(SInvalidPropertyValue); - end; - - if Length(Temp) > 1 then - raise EReadError.Create(SInvalidPropertyValue); - Result := Temp[1]; -end; - -procedure TTntWideCharPropertyFiler.ReadData_W(Reader: TReader); -begin - SetOrdProp(FInstance, FPropInfo, Ord(ReadChar(Reader))); -end; - -procedure TTntWideCharPropertyFiler.ReadDataUTF7(Reader: TReader); -var - S: WideString; -begin - S := UTF7ToWideString(Reader.ReadString); - if S = '' then - SetOrdProp(FInstance, FPropInfo, 0) - else - SetOrdProp(FInstance, FPropInfo, Ord(S[1])) -end; - -type TAccessWriter = class(TWriter); - -procedure TTntWideCharPropertyFiler.WriteData_W(Writer: TWriter); -var - L: Integer; - Temp: WideString; -begin - Temp := WideChar(GetOrdProp(FInstance, FPropInfo)); - - {$IFNDEF FPC} - TAccessWriter(Writer).WriteValue(vaWString); - {$ELSE} - TAccessWriter(Writer).Write(vaWString, SizeOf(vaWString)); - {$ENDIF} - L := Length(Temp); - Writer.Write(L, SizeOf(Integer)); - Writer.Write(Pointer(@Temp[1])^, L * 2); -end; - -procedure TTntWideCharPropertyFiler.DefineProperties(Filer: TFiler; - Instance: TPersistent; PropName: AnsiString); - - {$IFNDEF COMPILER_9_UP} - function HasData: Boolean; - var - CurrPropValue: Integer; - begin - // must be stored - Result := IsStoredProp(Instance, FPropInfo); - if Result and (Filer.Ancestor <> nil) and - (GetPropInfo(Filer.Ancestor, PropName, [tkWChar]) <> nil) then - begin - // must be different than ancestor - CurrPropValue := GetOrdProp(Instance, FPropInfo); - Result := CurrPropValue <> GetOrdProp(Filer.Ancestor, GetPropInfo(Filer.Ancestor, PropName)); - end; - if Result and (Filer is TWriter) then - begin - FWriter := TWriter(Filer); - Result := not IsDefaultOrdPropertyValue(Instance, FPropInfo, GetLookupInfo); - end; - end; - {$ENDIF} - -begin - FInstance := Instance; - FPropInfo := GetPropInfo(Instance, PropName, [tkWChar]); - if FPropInfo <> nil then - begin - // must be published (and of type WideChar) - {$IFDEF COMPILER_9_UP} - Filer.DefineProperty(PropName + 'W', ReadData_W, WriteData_W, False); - {$ELSE} - Filer.DefineProperty(PropName + 'W', ReadData_W, WriteData_W, HasData); - {$ENDIF} - Filer.DefineProperty(PropName + '_UTF7', ReadDataUTF7, nil, False); - end; - FInstance := nil; - FPropInfo := nil; -end; - -procedure TntPersistent_AfterInherited_DefineProperties(Filer: TFiler; Instance: TPersistent); -var - I, Count: Integer; - PropInfo: PPropInfo; - PropList: PPropList; - WideStringFiler: TTntWideStringPropertyFiler; - WideCharFiler: TTntWideCharPropertyFiler; -begin - Count := GetTypeData(Instance.ClassInfo)^.PropCount; - if Count > 0 then - begin - WideStringFiler := TTntWideStringPropertyFiler.Create; - try - WideCharFiler := TTntWideCharPropertyFiler.Create; - try - GetMem(PropList, Count * SizeOf(Pointer)); - try - GetPropInfos(Instance.ClassInfo, PropList); - for I := 0 to Count - 1 do - begin - PropInfo := PropList^[I]; - if (PropInfo = nil) then - break; - if (PropInfo.PropType^.Kind = tkWString) then - WideStringFiler.DefineProperties(Filer, Instance, PropInfo.Name) - else if (PropInfo.PropType^.Kind = tkWChar) then - WideCharFiler.DefineProperties(Filer, Instance, PropInfo.Name) - end; - finally - FreeMem(PropList, Count * SizeOf(Pointer)); - end; - finally - WideCharFiler.Free; - end; - finally - WideStringFiler.Free; - end; - end; -end; - -{ TTntFileStream } - -{$IFDEF FPC} - {$DEFINE HAS_SFCREATEERROREX} -{$ENDIF} -{$IFDEF DELPHI_7_UP} - {$DEFINE HAS_SFCREATEERROREX} -{$ENDIF} - -constructor TTntFileStream.Create(const FileName: WideString; Mode: Word); -var - CreateHandle: Integer; - {$IFDEF HAS_SFCREATEERROREX} - ErrorMessage: WideString; - {$ENDIF} -begin - if Mode = fmCreate then - begin - CreateHandle := WideFileCreate(FileName); - if CreateHandle < 0 then begin - {$IFDEF HAS_SFCREATEERROREX} - ErrorMessage := WideSysErrorMessage(GetLastError); - raise EFCreateError.CreateFmt(SFCreateErrorEx, [WideExpandFileName(FileName), ErrorMessage]); - {$ELSE} - raise EFCreateError.CreateFmt(SFCreateError, [WideExpandFileName(FileName)]); - {$ENDIF} - end; - end else - begin - CreateHandle := WideFileOpen(FileName, Mode); - if CreateHandle < 0 then begin - {$IFDEF HAS_SFCREATEERROREX} - ErrorMessage := WideSysErrorMessage(GetLastError); - raise EFOpenError.CreateFmt(SFOpenErrorEx, [WideExpandFileName(FileName), ErrorMessage]); - {$ELSE} - raise EFOpenError.CreateFmt(SFOpenError, [WideExpandFileName(FileName)]); - {$ENDIF} - end; - end; - inherited Create(CreateHandle); -end; - -destructor TTntFileStream.Destroy; -begin - if Handle >= 0 then FileClose(Handle); -end; - -{ TTntMemoryStream } - -procedure TTntMemoryStream.LoadFromFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite); - try - LoadFromStream(Stream); - finally - Stream.Free; - end; -end; - -procedure TTntMemoryStream.SaveToFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmCreate); - try - SaveToStream(Stream); - finally - Stream.Free; - end; -end; - -{ TTntResourceStream } - -constructor TTntResourceStream.Create(Instance: THandle; const ResName: WideString; - ResType: PWideChar); -begin - inherited Create; - Initialize(Instance, PWideChar(ResName), ResType); -end; - -constructor TTntResourceStream.CreateFromID(Instance: THandle; ResID: Word; - ResType: PWideChar); -begin - inherited Create; - Initialize(Instance, PWideChar(ResID), ResType); -end; - -procedure TTntResourceStream.Initialize(Instance: THandle; Name, ResType: PWideChar); - - procedure Error; - begin - raise EResNotFound.CreateFmt(SResNotFound, [Name]); - end; - -begin - HResInfo := FindResourceW(Instance, Name, ResType); - if HResInfo = 0 then Error; - HGlobal := LoadResource(Instance, HResInfo); - if HGlobal = 0 then Error; - SetPointer(LockResource(HGlobal), SizeOfResource(Instance, HResInfo)); -end; - -destructor TTntResourceStream.Destroy; -begin - UnlockResource(HGlobal); - FreeResource(HGlobal); { Technically this is not necessary (MS KB #193678) } - inherited Destroy; -end; - -function TTntResourceStream.Write(const Buffer; Count: Longint): Longint; -begin - raise EStreamError.CreateRes(PResStringRec(@SCantWriteResourceStreamError)); -end; - -procedure TTntResourceStream.SaveToFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmCreate); - try - SaveToStream(Stream); - finally - Stream.Free; - end; -end; - -{ TAnsiStrings } - -procedure TAnsiStrings{TNT-ALLOW TAnsiStrings}.LoadFromFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite); - try - LoadFromStream(Stream); - finally - Stream.Free; - end; -end; - -procedure TAnsiStrings{TNT-ALLOW TAnsiStrings}.SaveToFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmCreate); - try - SaveToStream(Stream); - finally - Stream.Free; - end; -end; - -procedure TAnsiStrings{TNT-ALLOW TAnsiStrings}.LoadFromFileEx(const FileName: WideString; CodePage: Cardinal); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite); - try - LoadFromStreamEx(Stream, CodePage); - finally - Stream.Free; - end; -end; - -procedure TAnsiStrings{TNT-ALLOW TAnsiStrings}.SaveToFileEx(const FileName: WideString; CodePage: Cardinal); -var - Stream: TStream; - Utf8BomPtr: PAnsiChar; -begin - Stream := TTntFileStream.Create(FileName, fmCreate); - try - if (CodePage = CP_UTF8) then - begin - Utf8BomPtr := PAnsiChar(UTF8_BOM); - Stream.WriteBuffer(Utf8BomPtr^, Length(UTF8_BOM)); - end; - SaveToStreamEx(Stream, CodePage); - finally - Stream.Free; - end; -end; - -{ TAnsiStringsForWideStringsAdapter } - -constructor TAnsiStringsForWideStringsAdapter.Create(AWideStrings: TTntStrings; _AdapterCodePage: Cardinal); -begin - inherited Create; - FWideStrings := AWideStrings; - FAdapterCodePage := _AdapterCodePage; -end; - -function TAnsiStringsForWideStringsAdapter.AdapterCodePage: Cardinal; -begin - if FAdapterCodePage = 0 then - Result := TntSystem.DefaultSystemCodePage - else - Result := FAdapterCodePage; -end; - -procedure TAnsiStringsForWideStringsAdapter.Clear; -begin - FWideStrings.Clear; -end; - -procedure TAnsiStringsForWideStringsAdapter.Delete(Index: Integer); -begin - FWideStrings.Delete(Index); -end; - -function TAnsiStringsForWideStringsAdapter.Get(Index: Integer): AnsiString; -begin - Result := WideStringToStringEx(FWideStrings.Get(Index), AdapterCodePage); -end; - -procedure TAnsiStringsForWideStringsAdapter.Put(Index: Integer; const S: AnsiString); -begin - FWideStrings.Put(Index, StringToWideStringEx(S, AdapterCodePage)); -end; - -function TAnsiStringsForWideStringsAdapter.GetCount: Integer; -begin - Result := FWideStrings.GetCount; -end; - -procedure TAnsiStringsForWideStringsAdapter.Insert(Index: Integer; const S: AnsiString); -begin - FWideStrings.Insert(Index, StringToWideStringEx(S, AdapterCodePage)); -end; - -function TAnsiStringsForWideStringsAdapter.GetObject(Index: Integer): TObject; -begin - Result := FWideStrings.GetObject(Index); -end; - -procedure TAnsiStringsForWideStringsAdapter.PutObject(Index: Integer; AObject: TObject); -begin - FWideStrings.PutObject(Index, AObject); -end; - -procedure TAnsiStringsForWideStringsAdapter.SetUpdateState(Updating: Boolean); -begin - FWideStrings.SetUpdateState(Updating); -end; - -procedure TAnsiStringsForWideStringsAdapter.LoadFromStreamEx(Stream: TStream; CodePage: Cardinal); -var - Size: Integer; - S: AnsiString; -begin - BeginUpdate; - try - Size := Stream.Size - Stream.Position; - SetString(S, nil, Size); - Stream.Read(Pointer(S)^, Size); - FWideStrings.SetTextStr(StringToWideStringEx(S, CodePage)); - finally - EndUpdate; - end; -end; - -procedure TAnsiStringsForWideStringsAdapter.SaveToStreamEx(Stream: TStream; CodePage: Cardinal); -var - S: AnsiString; -begin - S := WideStringToStringEx(FWideStrings.GetTextStr, CodePage); - Stream.WriteBuffer(Pointer(S)^, Length(S)); -end; - -{ TTntStrings } - -constructor TTntStrings.Create; -begin - inherited; - FAnsiStrings := TAnsiStringsForWideStringsAdapter.Create(Self); - FLastFileCharSet := csUnicode; -end; - -destructor TTntStrings.Destroy; -begin - FreeAndNil(FAnsiStrings); - inherited; -end; - -procedure TTntStrings.SetAnsiStrings(const Value: TAnsiStrings{TNT-ALLOW TAnsiStrings}); -begin - FAnsiStrings.Assign(Value); -end; - -procedure TTntStrings.DefineProperties(Filer: TFiler); - - {$IFNDEF COMPILER_7_UP} - function DoWrite: Boolean; - begin - if Filer.Ancestor <> nil then - begin - Result := True; - if Filer.Ancestor is TWideStrings then - Result := not Equals(TWideStrings(Filer.Ancestor)) - end - else Result := Count > 0; - end; - - function DoWriteAsUTF7: Boolean; - var - i: integer; - begin - Result := False; - for i := 0 to Count - 1 do begin - if (Strings[i] <> '') and (WideStringToUTF8(Strings[i]) <> Strings[i]) then begin - Result := True; - break; { found a string with non-ASCII chars (> 127) } - end; - end; - end; - {$ENDIF} - -begin - inherited DefineProperties(Filer); { Handles main 'Strings' property.' } - Filer.DefineProperty('WideStrings', ReadData, nil, False); - Filer.DefineProperty('WideStringsW', ReadDataUTF8, nil, False); - {$IFDEF COMPILER_7_UP} - Filer.DefineProperty('WideStrings_UTF7', ReadDataUTF7, WriteDataUTF7, False); - {$ELSE} - Filer.DefineProperty('WideStrings_UTF7', ReadDataUTF7, WriteDataUTF7, DoWrite and DoWriteAsUTF7); - {$ENDIF} -end; - -procedure TTntStrings.LoadFromFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite); - try - FLastFileCharSet := AutoDetectCharacterSet(Stream); - Stream.Position := 0; - LoadFromStream(Stream); - finally - Stream.Free; - end; -end; - -procedure TTntStrings.LoadFromStream(Stream: TStream); -begin - LoadFromStream_BOM(Stream, True); -end; - -procedure TTntStrings.LoadFromStream_BOM(Stream: TStream; WithBOM: Boolean); -var - DataLeft: Integer; - StreamCharSet: TTntStreamCharSet; - SW: WideString; - SA: AnsiString; -begin - BeginUpdate; - try - if WithBOM then - StreamCharSet := AutoDetectCharacterSet(Stream) - else - StreamCharSet := csUnicode; - DataLeft := Stream.Size - Stream.Position; - if (StreamCharSet in [csUnicode, csUnicodeSwapped]) then - begin - // BOM indicates Unicode text stream - if DataLeft < SizeOf(WideChar) then - SW := '' - else begin - SetLength(SW, DataLeft div SizeOf(WideChar)); - Stream.Read(PWideChar(SW)^, DataLeft); - if StreamCharSet = csUnicodeSwapped then - StrSwapByteOrder(PWideChar(SW)); - end; - SetTextStr(SW); - end - else if StreamCharSet = csUtf8 then - begin - // BOM indicates UTF-8 text stream - SetLength(SA, DataLeft div SizeOf(AnsiChar)); - Stream.Read(PAnsiChar(SA)^, DataLeft); - SetTextStr(UTF8ToWideString(SA)); - end - else - begin - // without byte order mark it is assumed that we are loading ANSI text - SetLength(SA, DataLeft div SizeOf(AnsiChar)); - Stream.Read(PAnsiChar(SA)^, DataLeft); - SetTextStr(SA); - end; - finally - EndUpdate; - end; -end; - -procedure TTntStrings.ReadData(Reader: TReader); -begin - if Reader.NextValue in [vaString, vaLString] then - SetTextStr(Reader.ReadString) {JCL compatiblity} - else if Reader.NextValue = vaWString then - SetTextStr(Reader.ReadWideString) {JCL compatiblity} - else begin - BeginUpdate; - try - Clear; - Reader.ReadListBegin; - while not Reader.EndOfList do - if Reader.NextValue in [vaString, vaLString] then - Add(Reader.ReadString) {TStrings compatiblity} - else - Add(Reader.ReadWideString); - Reader.ReadListEnd; - finally - EndUpdate; - end; - end; -end; - -procedure TTntStrings.ReadDataUTF7(Reader: TReader); -begin - Reader.ReadListBegin; - if ReaderNeedsUtfHelp(Reader) then - begin - BeginUpdate; - try - Clear; - while not Reader.EndOfList do - Add(UTF7ToWideString(Reader.ReadString)) - finally - EndUpdate; - end; - end else begin - while not Reader.EndOfList do - Reader.ReadString; { do nothing with Result } - end; - Reader.ReadListEnd; -end; - -procedure TTntStrings.ReadDataUTF8(Reader: TReader); -begin - Reader.ReadListBegin; - if ReaderNeedsUtfHelp(Reader) - or (Count = 0){ Legacy support where 'WideStrings' was never written in lieu of WideStringsW } - then begin - BeginUpdate; - try - Clear; - while not Reader.EndOfList do - Add(UTF8ToWideString(Reader.ReadString)) - finally - EndUpdate; - end; - end else begin - while not Reader.EndOfList do - Reader.ReadString; { do nothing with Result } - end; - Reader.ReadListEnd; -end; - -procedure TTntStrings.SaveToFile(const FileName: WideString); -var - Stream: TStream; -begin - Stream := TTntFileStream.Create(FileName, fmCreate); - try - SaveToStream(Stream); - finally - Stream.Free; - end; -end; - -procedure TTntStrings.SaveToStream(Stream: TStream); -begin - SaveToStream_BOM(Stream, True); -end; - -procedure TTntStrings.SaveToStream_BOM(Stream: TStream; WithBOM: Boolean); -// Saves the currently loaded text into the given stream. -// WithBOM determines whether to write a byte order mark or not. -var - SW: WideString; - BOM: WideChar; -begin - if WithBOM then begin - BOM := UNICODE_BOM; - Stream.WriteBuffer(BOM, SizeOf(WideChar)); - end; - SW := GetTextStr; - Stream.WriteBuffer(PWideChar(SW)^, Length(SW) * SizeOf(WideChar)); -end; - -procedure TTntStrings.WriteDataUTF7(Writer: TWriter); -var - I: Integer; -begin - Writer.WriteListBegin; - for I := 0 to Count-1 do - Writer.WriteString(WideStringToUTF7(Get(I))); - Writer.WriteListEnd; -end; - -{ TTntStringList } - -destructor TTntStringList.Destroy; -begin - FOnChange := nil; - FOnChanging := nil; - inherited Destroy; - if FCount <> 0 then Finalize(FList^[0], FCount); - FCount := 0; - SetCapacity(0); -end; - -function TTntStringList.Add(const S: WideString): Integer; -begin - Result := AddObject(S, nil); -end; - -function TTntStringList.AddObject(const S: WideString; AObject: TObject): Integer; -begin - if not Sorted then - Result := FCount - else - if Find(S, Result) then - case Duplicates of - dupIgnore: Exit; - dupError: Error(PResStringRec(@SDuplicateString), 0); - end; - InsertItem(Result, S, AObject); -end; - -procedure TTntStringList.Changed; -begin - if (not FUpdating) and Assigned(FOnChange) then - FOnChange(Self); -end; - -procedure TTntStringList.Changing; -begin - if (not FUpdating) and Assigned(FOnChanging) then - FOnChanging(Self); -end; - -procedure TTntStringList.Clear; -begin - if FCount <> 0 then - begin - Changing; - Finalize(FList^[0], FCount); - FCount := 0; - SetCapacity(0); - Changed; - end; -end; - -procedure TTntStringList.Delete(Index: Integer); -begin - if (Index < 0) or (Index >= FCount) then Error(PResStringRec(@SListIndexError), Index); - Changing; - Finalize(FList^[Index]); - Dec(FCount); - if Index < FCount then - System.Move(FList^[Index + 1], FList^[Index], - (FCount - Index) * SizeOf(TWideStringItem)); - Changed; -end; - -procedure TTntStringList.Exchange(Index1, Index2: Integer); -begin - if (Index1 < 0) or (Index1 >= FCount) then Error(PResStringRec(@SListIndexError), Index1); - if (Index2 < 0) or (Index2 >= FCount) then Error(PResStringRec(@SListIndexError), Index2); - Changing; - ExchangeItems(Index1, Index2); - Changed; -end; - -procedure TTntStringList.ExchangeItems(Index1, Index2: Integer); -var - Temp: Integer; - Item1, Item2: PWideStringItem; -begin - Item1 := @FList^[Index1]; - Item2 := @FList^[Index2]; - Temp := Integer(Item1^.FString); - Integer(Item1^.FString) := Integer(Item2^.FString); - Integer(Item2^.FString) := Temp; - Temp := Integer(Item1^.FObject); - Integer(Item1^.FObject) := Integer(Item2^.FObject); - Integer(Item2^.FObject) := Temp; -end; - -function TTntStringList.Find(const S: WideString; var Index: Integer): Boolean; -var - L, H, I, C: Integer; -begin - Result := False; - L := 0; - H := FCount - 1; - while L <= H do - begin - I := (L + H) shr 1; - C := CompareStrings(FList^[I].FString, S); - if C < 0 then L := I + 1 else - begin - H := I - 1; - if C = 0 then - begin - Result := True; - if Duplicates <> dupAccept then L := I; - end; - end; - end; - Index := L; -end; - -function TTntStringList.Get(Index: Integer): WideString; -begin - if (Index < 0) or (Index >= FCount) then Error(PResStringRec(@SListIndexError), Index); - Result := FList^[Index].FString; -end; - -function TTntStringList.GetCapacity: Integer; -begin - Result := FCapacity; -end; - -function TTntStringList.GetCount: Integer; -begin - Result := FCount; -end; - -function TTntStringList.GetObject(Index: Integer): TObject; -begin - if (Index < 0) or (Index >= FCount) then Error(PResStringRec(@SListIndexError), Index); - Result := FList^[Index].FObject; -end; - -procedure TTntStringList.Grow; -var - Delta: Integer; -begin - if FCapacity > 64 then Delta := FCapacity div 4 else - if FCapacity > 8 then Delta := 16 else - Delta := 4; - SetCapacity(FCapacity + Delta); -end; - -function TTntStringList.IndexOf(const S: WideString): Integer; -begin - if not Sorted then Result := inherited IndexOf(S) else - if not Find(S, Result) then Result := -1; -end; - -function TTntStringList.IndexOfName(const Name: WideString): Integer; -var - NameKey: WideString; -begin - if not Sorted then - Result := inherited IndexOfName(Name) - else begin - // use sort to find index more quickly - NameKey := Name + NameValueSeparator; - Find(NameKey, Result); - if (Result < 0) or (Result > Count - 1) then - Result := -1 - else if CompareStrings(NameKey, Copy(Strings[Result], 1, Length(NameKey))) <> 0 then - Result := -1 - end; -end; - -procedure TTntStringList.Insert(Index: Integer; const S: WideString); -begin - InsertObject(Index, S, nil); -end; - -procedure TTntStringList.InsertObject(Index: Integer; const S: WideString; - AObject: TObject); -begin - if Sorted then Error(PResStringRec(@SSortedListError), 0); - if (Index < 0) or (Index > FCount) then Error(PResStringRec(@SListIndexError), Index); - InsertItem(Index, S, AObject); -end; - -procedure TTntStringList.InsertItem(Index: Integer; const S: WideString; AObject: TObject); -begin - Changing; - if FCount = FCapacity then Grow; - if Index < FCount then - System.Move(FList^[Index], FList^[Index + 1], - (FCount - Index) * SizeOf(TWideStringItem)); - with FList^[Index] do - begin - Pointer(FString) := nil; - FObject := AObject; - FString := S; - end; - Inc(FCount); - Changed; -end; - -procedure TTntStringList.Put(Index: Integer; const S: WideString); -begin - if Sorted then Error(PResStringRec(@SSortedListError), 0); - if (Index < 0) or (Index >= FCount) then Error(PResStringRec(@SListIndexError), Index); - Changing; - FList^[Index].FString := S; - Changed; -end; - -procedure TTntStringList.PutObject(Index: Integer; AObject: TObject); -begin - if (Index < 0) or (Index >= FCount) then Error(PResStringRec(@SListIndexError), Index); - Changing; - FList^[Index].FObject := AObject; - Changed; -end; - -procedure TTntStringList.QuickSort(L, R: Integer; SCompare: TWideStringListSortCompare); -var - I, J, P: Integer; -begin - repeat - I := L; - J := R; - P := (L + R) shr 1; - repeat - while SCompare(Self, I, P) < 0 do Inc(I); - while SCompare(Self, J, P) > 0 do Dec(J); - if I <= J then - begin - ExchangeItems(I, J); - if P = I then - P := J - else if P = J then - P := I; - Inc(I); - Dec(J); - end; - until I > J; - if L < J then QuickSort(L, J, SCompare); - L := I; - until I >= R; -end; - -procedure TTntStringList.SetCapacity(NewCapacity: Integer); -begin - ReallocMem(FList, NewCapacity * SizeOf(TWideStringItem)); - FCapacity := NewCapacity; -end; - -procedure TTntStringList.SetSorted(Value: Boolean); -begin - if FSorted <> Value then - begin - if Value then Sort; - FSorted := Value; - end; -end; - -procedure TTntStringList.SetUpdateState(Updating: Boolean); -begin - FUpdating := Updating; - if Updating then Changing else Changed; -end; - -function WideStringListCompareStrings(List: TTntStringList; Index1, Index2: Integer): Integer; -begin - Result := List.CompareStrings(List.FList^[Index1].FString, - List.FList^[Index2].FString); -end; - -procedure TTntStringList.Sort; -begin - CustomSort(WideStringListCompareStrings); -end; - -procedure TTntStringList.CustomSort(Compare: TWideStringListSortCompare); -begin - if not Sorted and (FCount > 1) then - begin - Changing; - QuickSort(0, FCount - 1, Compare); - Changed; - end; -end; - -function TTntStringList.CompareStrings(const S1, S2: WideString): Integer; -begin - if CaseSensitive then - Result := WideCompareStr(S1, S2) - else - Result := WideCompareText(S1, S2); -end; - -procedure TTntStringList.SetCaseSensitive(const Value: Boolean); -begin - if Value <> FCaseSensitive then - begin - FCaseSensitive := Value; - if Sorted then Sort; - end; -end; - -//------------------------- TntClasses introduced procs ---------------------------------- - -function AutoDetectCharacterSet(Stream: TStream): TTntStreamCharSet; -var - ByteOrderMark: WideChar; - BytesRead: Integer; - Utf8Test: array[0..2] of AnsiChar; -begin - // Byte Order Mark - ByteOrderMark := #0; - if (Stream.Size - Stream.Position) >= SizeOf(ByteOrderMark) then begin - BytesRead := Stream.Read(ByteOrderMark, SizeOf(ByteOrderMark)); - if (ByteOrderMark <> UNICODE_BOM) and (ByteOrderMark <> UNICODE_BOM_SWAPPED) then begin - ByteOrderMark := #0; - Stream.Seek(-BytesRead, soFromCurrent); - if (Stream.Size - Stream.Position) >= Length(Utf8Test) * SizeOf(AnsiChar) then begin - BytesRead := Stream.Read(Utf8Test[0], Length(Utf8Test) * SizeOf(AnsiChar)); - if Utf8Test <> UTF8_BOM then - Stream.Seek(-BytesRead, soFromCurrent); - end; - end; - end; - // Test Byte Order Mark - if ByteOrderMark = UNICODE_BOM then - Result := csUnicode - else if ByteOrderMark = UNICODE_BOM_SWAPPED then - Result := csUnicodeSwapped - else if Utf8Test = UTF8_BOM then - Result := csUtf8 - else - Result := csAnsi; -end; - -function FindSortedListByTarget(List: TList; TargetCompare: TListTargetCompare; - Target: Pointer; var Index: Integer): Boolean; -var - L, H, I, C: Integer; -begin - Result := False; - L := 0; - H := List.Count - 1; - while L <= H do - begin - I := (L + H) shr 1; - C := TargetCompare(List[i], Target); - if C < 0 then L := I + 1 else - begin - H := I - 1; - if C = 0 then - begin - Result := True; - L := I; - end; - end; - end; - Index := L; -end; - -function ClassIsRegistered(const clsid: TCLSID): Boolean; -var - OleStr: POleStr; - Reg: TRegIniFile; - Key, Filename: WideString; -begin - // First, check to see if there is a ProgID. This will tell if the - // control is registered on the machine. No ProgID, control won't run - Result := ProgIDFromCLSID(clsid, OleStr) = S_OK; - if not Result then Exit; //Bail as soon as anything goes wrong. - - // Next, make sure that the file is actually there by rooting it out - // of the registry - Key := WideFormat('\SOFTWARE\Classes\CLSID\%s', [GUIDToString(clsid)]); - Reg := TRegIniFile.Create; - try - Reg.RootKey := HKEY_LOCAL_MACHINE; - Result := Reg.OpenKeyReadOnly(Key); - if not Result then Exit; // Bail as soon as anything goes wrong. - - FileName := Reg.ReadString('InProcServer32', '', EmptyStr); - if (Filename = EmptyStr) then // try another key for the file name - begin - FileName := Reg.ReadString('InProcServer', '', EmptyStr); - end; - Result := Filename <> EmptyStr; - if not Result then Exit; - Result := WideFileExists(Filename); - finally - Reg.Free; - end; -end; - -{ TBufferedAnsiString } - -procedure TBufferedAnsiString.Clear; -begin - LastWriteIndex := 0; - if Length(FStringBuffer) > 0 then - FillChar(FStringBuffer[1], Length(FStringBuffer) * SizeOf(AnsiChar), 0); -end; - -procedure TBufferedAnsiString.AddChar(const wc: AnsiChar); -const - MIN_GROW_SIZE = 32; - MAX_GROW_SIZE = 256; -var - GrowSize: Integer; -begin - Inc(LastWriteIndex); - if LastWriteIndex > Length(FStringBuffer) then begin - GrowSize := Max(MIN_GROW_SIZE, Length(FStringBuffer)); - GrowSize := Min(GrowSize, MAX_GROW_SIZE); - SetLength(FStringBuffer, Length(FStringBuffer) + GrowSize); - FillChar(FStringBuffer[LastWriteIndex], GrowSize * SizeOf(AnsiChar), 0); - end; - FStringBuffer[LastWriteIndex] := wc; -end; - -procedure TBufferedAnsiString.AddString(const s: AnsiString); -var - LenS: Integer; - BlockSize: Integer; - AllocSize: Integer; -begin - LenS := Length(s); - if LenS > 0 then begin - Inc(LastWriteIndex); - if LastWriteIndex + LenS - 1 > Length(FStringBuffer) then begin - // determine optimum new allocation size - BlockSize := Length(FStringBuffer) div 2; - if BlockSize < 8 then - BlockSize := 8; - AllocSize := ((LenS div BlockSize) + 1) * BlockSize; - // realloc buffer - SetLength(FStringBuffer, Length(FStringBuffer) + AllocSize); - FillChar(FStringBuffer[Length(FStringBuffer) - AllocSize + 1], AllocSize * SizeOf(AnsiChar), 0); - end; - CopyMemory(@FStringBuffer[LastWriteIndex], @s[1], LenS * SizeOf(AnsiChar)); - Inc(LastWriteIndex, LenS - 1); - end; -end; - -procedure TBufferedAnsiString.AddBuffer(Buff: PAnsiChar; Chars: Integer); -var - i: integer; -begin - for i := 1 to Chars do begin - if Buff^ = #0 then - break; - AddChar(Buff^); - Inc(Buff); - end; -end; - -function TBufferedAnsiString.Value: AnsiString; -begin - Result := PAnsiChar(FStringBuffer); -end; - -function TBufferedAnsiString.BuffPtr: PAnsiChar; -begin - Result := PAnsiChar(FStringBuffer); -end; - -{ TBufferedWideString } - -procedure TBufferedWideString.Clear; -begin - LastWriteIndex := 0; - if Length(FStringBuffer) > 0 then - FillChar(FStringBuffer[1], Length(FStringBuffer) * SizeOf(WideChar), 0); -end; - -procedure TBufferedWideString.AddChar(const wc: WideChar); -const - MIN_GROW_SIZE = 32; - MAX_GROW_SIZE = 256; -var - GrowSize: Integer; -begin - Inc(LastWriteIndex); - if LastWriteIndex > Length(FStringBuffer) then begin - GrowSize := Max(MIN_GROW_SIZE, Length(FStringBuffer)); - GrowSize := Min(GrowSize, MAX_GROW_SIZE); - SetLength(FStringBuffer, Length(FStringBuffer) + GrowSize); - FillChar(FStringBuffer[LastWriteIndex], GrowSize * SizeOf(WideChar), 0); - end; - FStringBuffer[LastWriteIndex] := wc; -end; - -procedure TBufferedWideString.AddString(const s: WideString); -var - i: integer; -begin - for i := 1 to Length(s) do - AddChar(s[i]); -end; - -procedure TBufferedWideString.AddBuffer(Buff: PWideChar; Chars: Integer); -var - i: integer; -begin - for i := 1 to Chars do begin - if Buff^ = #0 then - break; - AddChar(Buff^); - Inc(Buff); - end; -end; - -function TBufferedWideString.Value: WideString; -begin - Result := PWideChar(FStringBuffer); -end; - -function TBufferedWideString.BuffPtr: PWideChar; -begin - Result := PWideChar(FStringBuffer); -end; - -{ TBufferedStreamReader } - -constructor TBufferedStreamReader.Create(Stream: TStream; BufferSize: Integer = 1024); -begin - // init stream - FStream := Stream; - FStreamSize := Stream.Size; - // init buffer - FBufferSize := BufferSize; - SetLength(FBuffer, BufferSize); - FBufferStartPosition := -FBufferSize; { out of any useful range } - // init virtual position - FVirtualPosition := 0; -end; - -function TBufferedStreamReader.Seek(Offset: Integer; Origin: Word): Longint; -begin - case Origin of - soFromBeginning: FVirtualPosition := Offset; - soFromCurrent: Inc(FVirtualPosition, Offset); - soFromEnd: FVirtualPosition := FStreamSize + Offset; - end; - Result := FVirtualPosition; -end; - -procedure TBufferedStreamReader.UpdateBufferFromPosition(StartPos: Integer); -begin - try - FStream.Position := StartPos; - FStream.Read(FBuffer[0], FBufferSize); - FBufferStartPosition := StartPos; - except - FBufferStartPosition := -FBufferSize; { out of any useful range } - raise; - end; -end; - -function TBufferedStreamReader.Read(var Buffer; Count: Integer): Longint; -var - BytesLeft: Integer; - FirstBufferRead: Integer; - StreamDirectRead: Integer; - Buf: PAnsiChar; -begin - if (FVirtualPosition >= 0) and (Count >= 0) then - begin - Result := FStreamSize - FVirtualPosition; - if Result > 0 then - begin - if Result > Count then - Result := Count; - - Buf := @Buffer; - BytesLeft := Result; - - // try to read what is left in buffer - FirstBufferRead := FBufferStartPosition + FBufferSize - FVirtualPosition; - if (FirstBufferRead < 0) or (FirstBufferRead > FBufferSize) then - FirstBufferRead := 0; - FirstBufferRead := Min(FirstBufferRead, Result); - if FirstBufferRead > 0 then begin - Move(FBuffer[FVirtualPosition - FBufferStartPosition], Buf[0], FirstBufferRead); - Dec(BytesLeft, FirstBufferRead); - end; - - if BytesLeft > 0 then begin - // The first read in buffer was not enough - StreamDirectRead := (BytesLeft div FBufferSize) * FBufferSize; - FStream.Position := FVirtualPosition + FirstBufferRead; - FStream.Read(Buf[FirstBufferRead], StreamDirectRead); - Dec(BytesLeft, StreamDirectRead); - - if BytesLeft > 0 then begin - // update buffer, and read what is left - UpdateBufferFromPosition(FStream.Position); - Move(FBuffer[0], Buf[FirstBufferRead + StreamDirectRead], BytesLeft); - end; - end; - - Inc(FVirtualPosition, Result); - Exit; - end; - end; - Result := 0; -end; - -function TBufferedStreamReader.Write(const Buffer; Count: Integer): Longint; -begin - raise ETntInternalError.Create('Internal Error: class can not write.'); - Result := 0; -end; - -//-------- synced wide string ----------------- - -function GetSyncedWideString(var WideStr: WideString; const AnsiStr: AnsiString): WideString; -begin - if AnsiString(WideStr) <> (AnsiStr) then begin - WideStr := AnsiStr; {AnsiStr changed. Keep WideStr in sync.} - end; - Result := WideStr; -end; - -procedure SetSyncedWideString(const Value: WideString; var WideStr: WideString; - const AnsiStr: AnsiString; SetAnsiStr: TSetAnsiStrEvent); -begin - if Value <> GetSyncedWideString(WideStr, AnsiStr) then - begin - if (not WideSameStr(Value, AnsiString(Value))) {unicode chars lost in conversion} - and (AnsiStr = AnsiString(Value)) {AnsiStr is not going to change} - then begin - SetAnsiStr(''); {force the change} - end; - WideStr := Value; - SetAnsiStr(Value); - end; -end; - -{ TWideComponentHelper } - -function CompareComponentHelperToTarget(Item, Target: Pointer): Integer; -begin - if PtrUInt(TWideComponentHelper(Item).FComponent) < PtrUInt(Target) then - Result := -1 - else if PtrUInt(TWideComponentHelper(Item).FComponent) > PtrUInt(Target) then - Result := 1 - else - Result := 0; -end; - -function FindWideComponentHelperIndex(ComponentHelperList: TComponentList; Component: TComponent; var Index: Integer): Boolean; -begin - // find Component in sorted wide caption list (list is sorted by TWideComponentHelper.FComponent) - Result := FindSortedListByTarget(ComponentHelperList, CompareComponentHelperToTarget, Component, Index); -end; - -constructor TWideComponentHelper.Create(AOwner: TComponent); -begin - raise ETntInternalError.Create('TNT Internal Error: TWideComponentHelper.Create should never be encountered.'); -end; - -constructor TWideComponentHelper.CreateHelper(AOwner: TComponent; ComponentHelperList: TComponentList); -var - Index: Integer; -begin - // don't use direct ownership for memory management - inherited Create(nil); - FComponent := AOwner; - FComponent.FreeNotification(Self); - - // insert into list according to sort - FindWideComponentHelperIndex(ComponentHelperList, FComponent, Index); - ComponentHelperList.Insert(Index, Self); -end; - -procedure TWideComponentHelper.Notification(AComponent: TComponent; Operation: TOperation); -begin - inherited; - if (AComponent = FComponent) and (Operation = opRemove) then begin - FComponent := nil; - Free; - end; -end; - -function FindWideComponentHelper(ComponentHelperList: TComponentList; Component: TComponent): TWideComponentHelper; -var - Index: integer; -begin - if FindWideComponentHelperIndex(ComponentHelperList, Component, Index) then begin - Result := TWideComponentHelper(ComponentHelperList[Index]); - Assert(Result.FComponent = Component, 'TNT Internal Error: FindWideComponentHelperIndex failed.'); - end else - Result := nil; -end; - -initialization - RuntimeUTFStreaming := False; { Delphi 6 and higher don't need UTF help at runtime. } - -end. |