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* Properly handle unicode in ContentTo* methods
* Refactor ContentTo* methods to use UTF-8 as the base encoding git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1043 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
blikblum
@ -3289,6 +3289,31 @@ type
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TVTDrawTextEvent = procedure(Sender: TBaseVirtualTree; TargetCanvas: TCanvas; Node: PVirtualNode;
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Column: TColumnIndex; const Text: String; const CellRect: TRect; var DefaultDraw: Boolean) of object;
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// Helper class to speed up rendering text formats for clipboard and drag'n drop transfers.
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{ TBufferedUTF8String }
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TBufferedUTF8String = class
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private
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FStart,
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FPosition,
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FEnd: PChar;
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function GetAsAnsiString: AnsiString;
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function GetAsUTF16String: UnicodeString;
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function GetAsUTF8String: String;
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public
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destructor Destroy; override;
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procedure Add(const S: String);
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procedure AddNewLine;
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property AsAnsiString: AnsiString read GetAsAnsiString;
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property AsUTF8String: String read GetAsUTF8String;
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property AsUTF16String: UnicodeString read GetAsUTF16String;
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end;
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{ TCustomVirtualStringTree }
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TCustomVirtualStringTree = class(TBaseVirtualTree)
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private
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FDefaultText: String; // text to show if there's no OnGetText event handler (e.g. at design time)
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@ -3305,6 +3330,7 @@ type
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FOnMeasureTextWidth: TVTMeasureTextWidthEvent; // used to adjust the width of the cells
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FOnDrawText: TVTDrawTextEvent; // used to custom draw the node text
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procedure AddContentToBuffer(Buffer: TBufferedUTF8String; Source: TVSTTextSourceType; const Separator: String);
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function GetImageText(Node: PVirtualNode; Kind: TVTImageKind;
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Column: TColumnIndex): String;
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procedure GetRenderStartValues(Source: TVSTTextSourceType; var Node: PVirtualNode;
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@ -3363,10 +3389,11 @@ type
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function ComputeNodeHeight(Canvas: TCanvas; Node: PVirtualNode; Column: TColumnIndex; S: String = ''): Integer; virtual;
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function ContentToClipboard(Format: Word; Source: TVSTTextSourceType): HGLOBAL;
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procedure ContentToCustom(Source: TVSTTextSourceType);
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function ContentToHTML(Source: TVSTTextSourceType; const Caption: String = ''): AnsiString;
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function ContentToHTML(Source: TVSTTextSourceType; const Caption: String = ''): String;
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function ContentToRTF(Source: TVSTTextSourceType): AnsiString;
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function ContentToText(Source: TVSTTextSourceType; const Separator: AnsiString): AnsiString;
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function ContentToUnicode(Source: TVSTTextSourceType; const Separator: String): String;
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function ContentToAnsi(Source: TVSTTextSourceType; const Separator: String): AnsiString;
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function ContentToUTF16(Source: TVSTTextSourceType; const Separator: String): WideString;
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function ContentToUTF8(Source: TVSTTextSourceType; const Separator: String): String;
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procedure GetTextInfo(Node: PVirtualNode; Column: TColumnIndex; const AFont: TFont; var R: TRect;
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var Text: String); override;
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function InvalidateNode(Node: PVirtualNode): TRect; override;
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@ -3881,7 +3908,8 @@ uses
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TypInfo, // for migration stuff
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ActnList,
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StdActns, // for standard action support
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GraphType
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GraphType,
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LCLProc
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{$ifdef EnableAccessible}
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,VTAccessibilityFactory
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{$endif}; // accessibility helper class
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@ -4040,37 +4068,6 @@ type
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property CurrentTree: TBaseVirtualTree read FCurrentTree;
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end;
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// Helper classes to speed up rendering text formats for clipboard and drag'n drop transfers.
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TBufferedAnsiString = class
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private
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FStart,
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FPosition,
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FEnd: PAnsiChar;
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function GetAsString: AnsiString;
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public
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destructor Destroy; override;
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procedure Add(const S: AnsiString);
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procedure AddNewLine;
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property AsString: AnsiString read GetAsString;
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end;
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TUTF8BufferedString = class
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private
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FStart,
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FPosition,
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FEnd: PChar;
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function GetAsString: String;
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public
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destructor Destroy; override;
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procedure Add(const S: String);
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procedure AddNewLine;
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property AsString: String read GetAsString;
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end;
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var
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WorkerThread: TWorkerThread;
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WorkEvent: TEvent;
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@ -4681,7 +4678,7 @@ begin
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end;
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end;
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Result := Result + Line + WideLF;
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Result := Result + Line + LineEnding;
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end;
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end
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else
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@ -4737,12 +4734,13 @@ begin
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end;
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end;
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Result := Result + Line + WideLF;
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Result := Result + Line + LineEnding;
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end;
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end;
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Len := Length(Result);
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if Result[Len] = WideLF then
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//todo: test
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if Result[Len - Length(LineEnding) + 1] = LineEnding[1] then
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SetLength(Result, Len - 1);
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end;
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@ -5762,12 +5760,11 @@ begin
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end;
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end;
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//----------------- TBufferedAnsiString ------------------------------------------------------------------------------------
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//----------------- TBufferedUTF8String --------------------------------------------------------------------------------
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const
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AllocIncrement = 2 shl 11; // Must be a power of 2.
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destructor TBufferedAnsiString.Destroy;
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destructor TBufferedUTF8String.Destroy;
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begin
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FreeMem(FStart);
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@ -5776,84 +5773,30 @@ end;
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//----------------------------------------------------------------------------------------------------------------------
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function TBufferedAnsiString.GetAsString: AnsiString;
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function TBufferedUTF8String.GetAsAnsiString: AnsiString;
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begin
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//an implicit conversion is done
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Result := AsUTF16String;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TBufferedUTF8String.GetAsUTF16String: UnicodeString;
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begin
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//todo: optimize
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Result := UTF8Decode(AsUTF8String);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TBufferedUTF8String.GetAsUTF8String: String;
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begin
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SetString(Result, FStart, FPosition - FStart);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TBufferedAnsiString.Add(const S: AnsiString);
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var
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NewLen,
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LastOffset,
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Len: Integer;
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begin
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Len := Length(S);
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// Make room for the new string.
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if FEnd - FPosition <= Len then
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begin
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// Round up NewLen so it is always a multiple of AllocIncrement.
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NewLen := FEnd - FStart + (Len + AllocIncrement - 1) and not (AllocIncrement - 1);
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// Keep last offset to restore it correctly in the case that FStart gets a new memory block assigned.
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LastOffset := FPosition - FStart;
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ReallocMem(FStart, NewLen);
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FPosition := FStart + LastOffset;
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FEnd := FStart + NewLen;
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end;
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Move(PAnsiChar(S)^, FPosition^, Len);
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Inc(FPosition, Len);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TBufferedAnsiString.AddNewLine;
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var
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NewLen,
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LastOffset: Integer;
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begin
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// Make room for the CR/LF characters.
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if FEnd - FPosition <= 2 then
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begin
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// Round up NewLen so it is always a multiple of AllocIncrement.
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NewLen := FEnd - FStart + (2 + AllocIncrement - 1) and not (AllocIncrement - 1);
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// Keep last offset to restore it correctly in the case that FStart gets a new memory block assigned.
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LastOffset := FPosition - FStart;
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ReallocMem(FStart, NewLen);
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FPosition := FStart + LastOffset;
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FEnd := FStart + NewLen;
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end;
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FPosition^ := #13;
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Inc(FPosition);
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FPosition^ := #10;
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Inc(FPosition);
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end;
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//----------------- TUTF8BufferedString --------------------------------------------------------------------------------
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destructor TUTF8BufferedString.Destroy;
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begin
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FreeMem(FStart);
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inherited;
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end;
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//----------------------------------------------------------------------------------------------------------------------
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function TUTF8BufferedString.GetAsString: String;
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begin
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SetString(Result, FStart, FPosition - FStart);
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end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TUTF8BufferedString.Add(const S: String);
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procedure TBufferedUTF8String.Add(const S: String);
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var
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NewLen,
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@ -5879,7 +5822,7 @@ end;
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//----------------------------------------------------------------------------------------------------------------------
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procedure TUTF8BufferedString.AddNewLine;
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procedure TBufferedUTF8String.AddNewLine;
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var
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NewLen,
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@ -32467,7 +32410,7 @@ end;
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//----------------------------------------------------------------------------------------------------------------------
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function TCustomVirtualStringTree.ContentToHTML(Source: TVSTTextSourceType; const Caption: String = ''): AnsiString;
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function TCustomVirtualStringTree.ContentToHTML(Source: TVSTTextSourceType; const Caption: String = ''): String;
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// Renders the current tree content (depending on Source) as HTML text encoded in UTF-8.
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// If Caption is not empty then it is used to create and fill the header for the table built here.
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@ -32482,96 +32425,7 @@ const
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ReplacementCharacter: UCS4 = $0000FFFD;
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var
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Buffer: TBufferedAnsiString;
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//--------------- local functions -------------------------------------------
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function ConvertSurrogate(S1, S2: UCS2): UCS4;
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// Converts a pair of high and low surrogate into the corresponding UCS4 character.
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const
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SurrogateOffset = ($D800 shl 10) + $DC00 - $10000;
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begin
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Result := Word(S1) shl 10 + Word(S2) - SurrogateOffset;
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end;
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//---------------------------------------------------------------------------
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function UTF16ToUTF8(const S: String): AnsiString;
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// Converts the given Unicode text (which may contain surrogates) into
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// the UTF-8 encoding used for the HTML clipboard format.
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const
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FirstByteMark: array[0..6] of Byte = ($00, $00, $C0, $E0, $F0, $F8, $FC);
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var
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Ch: UCS4;
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I, J, T: Integer;
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BytesToWrite: Cardinal;
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begin
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if Length(S) = 0 then
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Result := ''
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else
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begin
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// Make room for the result. Assume worst case, there are only short texts to convert.
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SetLength(Result, 6 * Length(S));
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T := 1;
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I := 1;
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while I <= Length(S) do
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begin
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Ch := UCS4(S[I]);
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// Is the character a surrogate?
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if (Ch and $FFFFF800) = $D800 then
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begin
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Inc(I);
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// Check the following char whether it forms a valid surrogate pair with the first character.
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if (I <= Length(S)) and ((UCS4(S[I]) and $FFFFFC00) = $DC00) then
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Ch := ConvertSurrogate(UCS2(Ch), UCS2(S[I]))
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else // Skip invalid surrogate value.
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Continue;
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end;
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if Ch < $80 then
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BytesToWrite := 1
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else
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if Ch < $800 then
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BytesToWrite := 2
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else
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if Ch < $10000 then
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BytesToWrite := 3
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else
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if Ch < $200000 then
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BytesToWrite := 4
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else
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if Ch < $4000000 then
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BytesToWrite := 5
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else
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if Ch <= MaximumUCS4 then
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BytesToWrite := 6
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else
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begin
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BytesToWrite := 2;
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Ch := ReplacementCharacter;
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end;
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for J := BytesToWrite downto 2 do
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begin
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Result[T + J - 1] := AnsiChar((Ch or $80) and $BF);
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Ch := Ch shr 6;
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end;
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Result[T] := AnsiChar(Ch or FirstByteMark[BytesToWrite]);
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Inc(T, BytesToWrite);
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Inc(I);
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end;
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SetLength(Result, T - 1); // set to actual length
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end;
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end;
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Buffer: TBufferedUTF8String;
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//---------------------------------------------------------------------------
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@ -32645,24 +32499,24 @@ var
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var
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I, J : Integer;
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Level, MaxLevel: Cardinal;
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AddHeader: AnsiString;
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AddHeader: String;
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Save, Run: PVirtualNode;
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GetNextNode: TGetNextNodeProc;
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Text: String;
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RenderColumns: Boolean;
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Columns: TColumnsArray;
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ColumnColors: array of AnsiString;
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ColumnColors: array of String;
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Index: Integer;
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IndentWidth,
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LineStyleText: AnsiString;
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LineStyleText: String;
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Alignment: TAlignment;
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BidiMode: TBidiMode;
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CellPadding: AnsiString;
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CellPadding: String;
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begin
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Buffer := TBufferedAnsiString.Create;
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Buffer := TBufferedUTF8String.Create;
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try
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// For customization by the application or descendants we use again the redirected font change event.
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RedirectFontChangeEvent(Canvas);
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@ -32673,7 +32527,7 @@ begin
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AddHeader := ' ';
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// Add title if adviced so by giving a caption.
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if Length(Caption) > 0 then
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AddHeader := AddHeader + 'caption="' + UTF16ToUTF8(Caption) + '"';
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AddHeader := AddHeader + 'caption="' + Caption + '"';
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if Borderstyle <> bsNone then
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AddHeader := AddHeader + Format(' border="%d" frame=box', [BorderWidth + 1]);
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@ -32810,7 +32664,7 @@ begin
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Buffer.Add('px">');
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if Length(Columns[I].Text) > 0 then
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Buffer.Add(UTF16ToUTF8(Columns[I].Text));
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Buffer.Add(Columns[I].Text);
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Buffer.Add('</th>');
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if Assigned(FOnAfterColumnExport) then
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FOnAfterColumnExport(Self, etHTML, Columns[I]);
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@ -32939,10 +32793,7 @@ begin
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Buffer.Add('>');
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Text := Self.Text[Run, Index];
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if Length(Text) > 0 then
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begin
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Text := UTF16ToUTF8(Text);
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Buffer.Add(Text);
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end;
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Buffer.Add('</td>');
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end;
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@ -32960,7 +32811,7 @@ begin
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RestoreFontChangeEvent(Canvas);
|
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|
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Result := Buffer.AsString;
|
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Result := Buffer.AsUTF8String;
|
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finally
|
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Buffer.Free;
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end;
|
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@ -32993,7 +32844,7 @@ var
|
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CurrentFontIndex,
|
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CurrentFontColor,
|
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CurrentFontSize: Integer;
|
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Buffer: TBufferedAnsiString;
|
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Buffer: TBufferedUTF8String;
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//--------------- local functions -------------------------------------------
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@ -33053,17 +32904,18 @@ var
|
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|
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//---------------------------------------------------------------------------
|
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|
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procedure TextPlusFont(Text: String; Font: TFont);
|
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procedure TextPlusFont(const Text: String; Font: TFont);
|
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|
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var
|
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UseUnderline,
|
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UseItalic,
|
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UseBold: Boolean;
|
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I: Integer;
|
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|
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WText: UnicodeString;
|
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begin
|
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if Length(Text) > 0 then
|
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begin
|
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WText := UTF8Decode(Text);
|
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UseUnderline := fsUnderline in Font.Style;
|
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if UseUnderline then
|
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Buffer.Add('\ul');
|
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@ -33086,13 +32938,13 @@ var
|
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Buffer.Add(' ');
|
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// Note: Unicode values > 32767 must be expressed as negative numbers. This is implicitly done
|
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// by interpreting the wide chars (word values) as small integers.
|
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for I := 1 to Length(Text) do
|
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for I := 1 to Length(WText) do
|
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begin
|
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if (Text[I] = WideLF) then
|
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Buffer.Add( '{\par}' )
|
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else if (Text[i] <> WideCR) then
|
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begin
|
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Buffer.Add(Format('\u%d\''3f', [SmallInt(Text[I])]));
|
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Buffer.Add(Format('\u%d\''3f', [SmallInt(WText[I])]));
|
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Continue;
|
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end;
|
||||
end;
|
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@ -33112,7 +32964,7 @@ var
|
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I, J: Integer;
|
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Save, Run: PVirtualNode;
|
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GetNextNode: TGetNextNodeProc;
|
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S, Tabs : AnsiString;
|
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S, Tabs : String;
|
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Text: String;
|
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Twips: Integer;
|
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|
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@ -33123,7 +32975,7 @@ var
|
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BidiMode: TBidiMode;
|
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|
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begin
|
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Buffer := TBufferedAnsiString.Create;
|
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Buffer := TBufferedUTF8String.Create;
|
||||
try
|
||||
// For customization by the application or descendants we use again the redirected font change event.
|
||||
RedirectFontChangeEvent(Canvas);
|
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@ -33302,7 +33154,7 @@ begin
|
||||
end;
|
||||
S := S + '}';
|
||||
|
||||
Result := S + Buffer.AsString + '}';
|
||||
Result := S + Buffer.AsAnsiString + '}';
|
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Fonts.Free;
|
||||
Colors.Free;
|
||||
|
||||
@ -33383,283 +33235,181 @@ end;
|
||||
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
|
||||
function TCustomVirtualStringTree.ContentToText(Source: TVSTTextSourceType; const Separator: AnsiString): AnsiString;
|
||||
|
||||
// Renders the current tree content (depending on Source) as plain ANSI text.
|
||||
// If an entry contains the separator char or double quotes then it is wrapped with double quotes
|
||||
// and existing double quotes are duplicated.
|
||||
// Note: Unicode strings are implicitely converted to ANSI strings based on the currently active user locale.
|
||||
|
||||
function TCustomVirtualStringTree.ContentToAnsi(Source: TVSTTextSourceType; const Separator: String): AnsiString;
|
||||
var
|
||||
RenderColumns: Boolean;
|
||||
Tabs: AnsiString;
|
||||
GetNextNode: TGetNextNodeProc;
|
||||
Run, Save: PVirtualNode;
|
||||
Level, MaxLevel: Cardinal;
|
||||
Columns: TColumnsArray;
|
||||
LastColumn: TVirtualTreeColumn;
|
||||
Index,
|
||||
I: Integer;
|
||||
Text: AnsiString;
|
||||
Buffer: TBufferedAnsiString;
|
||||
|
||||
Buffer: TBufferedUTF8String;
|
||||
begin
|
||||
Columns := nil;
|
||||
Buffer := TBufferedAnsiString.Create;
|
||||
Buffer := TBufferedUTF8String.Create;
|
||||
try
|
||||
RenderColumns := FHeader.UseColumns;
|
||||
if RenderColumns then
|
||||
Columns := FHeader.FColumns.GetVisibleColumns;
|
||||
|
||||
GetRenderStartValues(Source, Run, GetNextNode);
|
||||
Save := Run;
|
||||
|
||||
// The text consists of visible groups representing the columns, which are separated by one or more separator
|
||||
// characters. There are always MaxLevel separator chars in a line (main column only). Either before the caption
|
||||
// to ident it or after the caption to make the following column aligned.
|
||||
MaxLevel := 0;
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
Level := GetNodeLevel(Run);
|
||||
If Level > MaxLevel then
|
||||
MaxLevel := Level;
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
|
||||
Tabs := DupeString(Separator, MaxLevel);
|
||||
|
||||
// First line is always the header if used.
|
||||
if RenderColumns then
|
||||
begin
|
||||
LastColumn := Columns[High(Columns)];
|
||||
for I := 0 to High(Columns) do
|
||||
begin
|
||||
Buffer.Add(Columns[I].Text);
|
||||
if Columns[I] <> LastColumn then
|
||||
begin
|
||||
if Columns[I].Index = Header.MainColumn then
|
||||
begin
|
||||
Buffer.Add(Tabs);
|
||||
Buffer.Add(Separator);
|
||||
end
|
||||
else
|
||||
Buffer.Add(Separator);
|
||||
end;
|
||||
end;
|
||||
Buffer.AddNewLine;
|
||||
end
|
||||
else
|
||||
LastColumn := nil;
|
||||
|
||||
Run := Save;
|
||||
if RenderColumns then
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
if (not CanExportNode(Run) or
|
||||
(Assigned(FOnBeforeNodeExport) and (not FOnBeforeNodeExport(Self, etText, Run)))) then
|
||||
begin
|
||||
Run := GetNextNode(Run);
|
||||
Continue;
|
||||
end;
|
||||
for I := 0 to High(Columns) do
|
||||
begin
|
||||
if coVisible in Columns[I].Options then
|
||||
begin
|
||||
Index := Columns[I].Index;
|
||||
// This line implicitly converts the Unicode text to ANSI.
|
||||
Text := Self.Text[Run, Index];
|
||||
if Index = Header.MainColumn then
|
||||
begin
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
// Wrap the text with quotation marks if it contains the separator character.
|
||||
if (Pos(Separator, Text) > 0) or (Pos('"', Text) > 0) then
|
||||
Buffer.Add(AnsiQuotedStr(Text, '"'))
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(MaxLevel - Level) * Length(Separator)));
|
||||
end
|
||||
else
|
||||
if (Pos(Separator, Text) > 0) or (Pos('"', Text) > 0) then
|
||||
Buffer.Add(AnsiQuotedStr(Text, '"'))
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
|
||||
if Columns[I] <> LastColumn then
|
||||
Buffer.Add(Separator);
|
||||
end;
|
||||
end;
|
||||
if Assigned(FOnAfterNodeExport) then
|
||||
FOnAfterNodeExport(Self, etText, Run);
|
||||
Run := GetNextNode(Run);
|
||||
Buffer.AddNewLine;
|
||||
end;
|
||||
end
|
||||
else
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
if ((not CanExportNode(Run)) or
|
||||
(Assigned(FOnBeforeNodeExport) and (not FOnBeforeNodeExport(Self, etText, Run)))) then
|
||||
begin
|
||||
Run := GetNextNode(Run);
|
||||
Continue;
|
||||
end;
|
||||
// This line implicitly converts the Unicode text to ANSI.
|
||||
Text := Self.Text[Run, NoColumn];
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
Buffer.Add(Text);
|
||||
Buffer.AddNewLine;
|
||||
|
||||
if Assigned(FOnAfterNodeExport) then
|
||||
FonAfterNodeExport(Self, etText, Run);
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
end;
|
||||
|
||||
Result := Buffer.AsString;
|
||||
AddContentToBuffer(Buffer, Source, Separator);
|
||||
finally
|
||||
Buffer.Free;
|
||||
Result := Buffer.AsAnsiString;
|
||||
Buffer.Destroy;
|
||||
end;
|
||||
end;
|
||||
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
|
||||
function TCustomVirtualStringTree.ContentToUnicode(Source: TVSTTextSourceType; const Separator: String): String;
|
||||
procedure TCustomVirtualStringTree.AddContentToBuffer(Buffer: TBufferedUTF8String; Source: TVSTTextSourceType; const Separator: String);
|
||||
|
||||
// Renders the current tree content (depending on Source) as Unicode text.
|
||||
// If an entry contains the separator char then it is wrapped with double quotation marks.
|
||||
// Note: There is no QuotedStr function for Unicode in the VCL (like AnsiQuotedStr) so we have the limitation here
|
||||
// that an entry must not contain double quotation marks, otherwise import into other programs might fail!
|
||||
|
||||
const
|
||||
WideCRLF: String = #13#10;
|
||||
// Renders the current tree content (depending on Source) as UTF8 text.
|
||||
// If an entry contains the separator char or double quotes then it is wrapped with double quotes
|
||||
// and existing double quotes are duplicated.
|
||||
|
||||
var
|
||||
RenderColumns: Boolean;
|
||||
Tabs: String;
|
||||
GetNextNode: TGetNextNodeProc;
|
||||
Run, Save: PVirtualNode;
|
||||
|
||||
Level, MaxLevel: Cardinal;
|
||||
Columns: TColumnsArray;
|
||||
LastColumn: TVirtualTreeColumn;
|
||||
Level, MaxLevel: Cardinal;
|
||||
Index,
|
||||
I: Integer;
|
||||
Text: String;
|
||||
Buffer: TUTF8BufferedString;
|
||||
|
||||
begin
|
||||
Columns := nil;
|
||||
RenderColumns := FHeader.UseColumns;
|
||||
if RenderColumns then
|
||||
Columns := FHeader.FColumns.GetVisibleColumns;
|
||||
|
||||
Buffer := TUTF8BufferedString.Create;
|
||||
try
|
||||
RenderColumns := FHeader.UseColumns;
|
||||
if RenderColumns then
|
||||
Columns := FHeader.FColumns.GetVisibleColumns;
|
||||
GetRenderStartValues(Source, Run, GetNextNode);
|
||||
Save := Run;
|
||||
|
||||
GetRenderStartValues(Source, Run, GetNextNode);
|
||||
Save := Run;
|
||||
// The text consists of visible groups representing the columns, which are separated by one or more separator
|
||||
// characters. There are always MaxLevel separator chars in a line (main column only). Either before the caption
|
||||
// to ident it or after the caption to make the following column aligned.
|
||||
MaxLevel := 0;
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
Level := GetNodeLevel(Run);
|
||||
If Level > MaxLevel then
|
||||
MaxLevel := Level;
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
|
||||
// The text consists of visible groups representing the columns, which are separated by one or more separator
|
||||
// characters. There are always MaxLevel separator chars in a line (main column only). Either before the caption
|
||||
// to ident it or after the caption to make the following column aligned.
|
||||
MaxLevel := 0;
|
||||
Tabs := DupeString(Separator, MaxLevel);
|
||||
|
||||
// First line is always the header if used.
|
||||
if RenderColumns then
|
||||
begin
|
||||
LastColumn := Columns[High(Columns)];
|
||||
for I := 0 to High(Columns) do
|
||||
begin
|
||||
Buffer.Add(Columns[I].Text);
|
||||
if Columns[I] <> LastColumn then
|
||||
begin
|
||||
if Columns[I].Index = Header.MainColumn then
|
||||
begin
|
||||
Buffer.Add(Tabs);
|
||||
Buffer.Add(Separator);
|
||||
end
|
||||
else
|
||||
Buffer.Add(Separator);
|
||||
end;
|
||||
end;
|
||||
Buffer.AddNewLine;
|
||||
end
|
||||
else
|
||||
LastColumn := nil;
|
||||
|
||||
Run := Save;
|
||||
if RenderColumns then
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
Level := GetNodeLevel(Run);
|
||||
If Level > MaxLevel then
|
||||
MaxLevel := Level;
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
|
||||
Tabs := DupeString(Separator, MaxLevel);
|
||||
|
||||
// First line is always the header if used.
|
||||
if RenderColumns then
|
||||
begin
|
||||
LastColumn := Columns[High(Columns)];
|
||||
if (not CanExportNode(Run) or
|
||||
(Assigned(FOnBeforeNodeExport) and (not FOnBeforeNodeExport(Self, etText, Run)))) then
|
||||
begin
|
||||
Run := GetNextNode(Run);
|
||||
Continue;
|
||||
end;
|
||||
for I := 0 to High(Columns) do
|
||||
begin
|
||||
Buffer.Add(Columns[I].Text);
|
||||
if Columns[I] <> LastColumn then
|
||||
if coVisible in Columns[I].Options then
|
||||
begin
|
||||
if Columns[I].Index = Header.MainColumn then
|
||||
Index := Columns[I].Index;
|
||||
// This line implicitly converts the Unicode text to ANSI.
|
||||
Text := Self.Text[Run, Index];
|
||||
if Index = Header.MainColumn then
|
||||
begin
|
||||
Buffer.Add(Tabs);
|
||||
Buffer.Add(Separator);
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
// Wrap the text with quotation marks if it contains the separator character.
|
||||
if (Pos(Separator, Text) > 0) or (Pos('"', Text) > 0) then
|
||||
Buffer.Add(AnsiQuotedStr(Text, '"'))
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(MaxLevel - Level) * Length(Separator)));
|
||||
end
|
||||
else
|
||||
if (Pos(Separator, Text) > 0) or (Pos('"', Text) > 0) then
|
||||
Buffer.Add(AnsiQuotedStr(Text, '"'))
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
|
||||
if Columns[I] <> LastColumn then
|
||||
Buffer.Add(Separator);
|
||||
end;
|
||||
end;
|
||||
if Assigned(FOnAfterNodeExport) then
|
||||
FOnAfterNodeExport(Self, etText, Run);
|
||||
Run := GetNextNode(Run);
|
||||
Buffer.AddNewLine;
|
||||
end
|
||||
else
|
||||
LastColumn := nil;
|
||||
|
||||
Run := Save;
|
||||
if RenderColumns then
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
for I := 0 to High(Columns) do
|
||||
begin
|
||||
if coVisible in Columns[I].Options then
|
||||
begin
|
||||
Index := Columns[I].Index;
|
||||
Text := Self.Text[Run, Index];
|
||||
if Index = Header.MainColumn then
|
||||
begin
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
// Wrap the text with quotation marks if it contains the separator character.
|
||||
if Pos(Separator, Text) > 0 then
|
||||
begin
|
||||
Buffer.Add('"');
|
||||
Buffer.Add(Text);
|
||||
Buffer.Add('"');
|
||||
end
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(MaxLevel - Level) * Length(Separator)));
|
||||
end
|
||||
else
|
||||
if Pos(Separator, Text) > 0 then
|
||||
begin
|
||||
Buffer.Add('"');
|
||||
Buffer.Add(Text);
|
||||
Buffer.Add('"');
|
||||
end
|
||||
else
|
||||
Buffer.Add(Text);
|
||||
|
||||
if Columns[I] <> LastColumn then
|
||||
Buffer.Add(Separator);
|
||||
end;
|
||||
end;
|
||||
Run := GetNextNode(Run);
|
||||
Buffer.AddNewLine;
|
||||
end;
|
||||
end
|
||||
else
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
Text := Self.Text[Run, NoColumn];
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
Buffer.Add(Text);
|
||||
Buffer.AddNewLine;
|
||||
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
end;
|
||||
Result := Buffer.AsString;
|
||||
end
|
||||
else
|
||||
begin
|
||||
while Assigned(Run) do
|
||||
begin
|
||||
if ((not CanExportNode(Run)) or
|
||||
(Assigned(FOnBeforeNodeExport) and (not FOnBeforeNodeExport(Self, etText, Run)))) then
|
||||
begin
|
||||
Run := GetNextNode(Run);
|
||||
Continue;
|
||||
end;
|
||||
// This line implicitly converts the Unicode text to ANSI.
|
||||
Text := Self.Text[Run, NoColumn];
|
||||
Level := GetNodeLevel(Run);
|
||||
Buffer.Add(Copy(Tabs, 1, Integer(Level) * Length(Separator)));
|
||||
Buffer.Add(Text);
|
||||
Buffer.AddNewLine;
|
||||
|
||||
if Assigned(FOnAfterNodeExport) then
|
||||
FonAfterNodeExport(Self, etText, Run);
|
||||
Run := GetNextNode(Run);
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
|
||||
function TCustomVirtualStringTree.ContentToUTF16(Source: TVSTTextSourceType; const Separator: String): WideString;
|
||||
var
|
||||
Buffer: TBufferedUTF8String;
|
||||
begin
|
||||
Buffer := TBufferedUTF8String.Create;
|
||||
try
|
||||
AddContentToBuffer(Buffer, Source, Separator);
|
||||
finally
|
||||
Buffer.Free;
|
||||
Result := Buffer.AsUTF16String;
|
||||
Buffer.Destroy;
|
||||
end;
|
||||
end;
|
||||
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
|
||||
function TCustomVirtualStringTree.ContentToUTF8(Source: TVSTTextSourceType;
|
||||
const Separator: String): String;
|
||||
var
|
||||
Buffer: TBufferedUTF8String;
|
||||
begin
|
||||
Buffer := TBufferedUTF8String.Create;
|
||||
try
|
||||
AddContentToBuffer(Buffer, Source, Separator);
|
||||
finally
|
||||
Result := Buffer.AsUTF8String;
|
||||
Buffer.Destroy;
|
||||
end;
|
||||
end;
|
||||
|
||||
|
||||
Reference in New Issue
Block a user