TstringBuilder Delphi2007版

2010中的StringBuilder对象用的比较爽快！于是稍作了一些修改（增加了几个函数和属性）然后移植到D2007中来使用了！效果不错，共享一下！

unit DxStringBuilder;
interface
uses RTLConsts,Classes,SysUtils;
type
EExternal = class(Exception)
public
{$IFDEF MSWINDOWS}
ExceptionRecord: PExceptionRecord platform;
{$ENDIF}
{$IF defined(LINUX) or defined(MACOSX)}
ExceptionAddress: LongWord platform;
AccessAddress: LongWord platform;
SignalNumber: Integer platform;
{$IFEND LINUX or MACOSX}
end;
EIntError = class(EExternal);
ERangeError = class(EIntError);
TCharArray = array of Char;
TStringBuilder = class
private
const DefaultCapacity = $10;
function GetCapacity: Integer;
procedure SetCapacity(const Value: Integer);
function GetLength: Integer;
procedure Set_Length(const Value: Integer);
function GetMaxCapacity: Integer;
procedure ReduceCapacity;
procedure ExpandCapacity;
procedure CheckBounds(Index: Integer);
function _Replace(Index: Integer; const Old, New: string): Boolean;
function GetChars(index: Integer): Char;
procedure SetChars(index: Integer; const Value: Char);
protected
FData: TCharArray;
FLength: Integer;
FMaxCapacity: Integer;
public
constructor Create; overload;
constructor Create(aCapacity: Integer); overload;
constructor Create(const Value: string); overload;
function Append(const Value: Boolean): TStringBuilder; overload;
function Append(const Value: Byte): TStringBuilder; overload;
function Append(const Value: Char): TStringBuilder; overload;
function Append(const Value: Currency): TStringBuilder; overload;
function Append(const Value: Double): TStringBuilder; overload;
function Append(const Value: Smallint): TStringBuilder; overload;
function Append(const Value: Integer): TStringBuilder; overload;
function Append(const Value: Int64): TStringBuilder; overload;
function Append(const Value: TObject): TStringBuilder; overload;
function Append(const Value: Shortint): TStringBuilder; overload;
function Append(const Value: Single): TStringBuilder; overload;
function Append(const Value: string): TStringBuilder; overload;
function Append(const Value: UInt64): TStringBuilder; overload;
function Append(const Value: TCharArray): TStringBuilder; overload;
function Append(const Value: Word): TStringBuilder; overload;
function Append(const Value: Cardinal): TStringBuilder; overload;
function Append(const Value: Char; RepeatCount: Integer): TStringBuilder; overload;
function Append(const Value: TCharArray; StartIndex: Integer; CharCount: Integer): TStringBuilder; overload;
function Append(const Value: string; StartIndex: Integer; Count: Integer): TStringBuilder; overload;
function AppendFormat(const Format: string; const Args: array of const): TStringBuilder; overload;
function AppendLine: TStringBuilder; overload;
function AppendLine(const Value: string): TStringBuilder; overload;
procedure Clear;
procedure CopyTo(SourceIndex: Integer; const Destination: TCharArray; DestinationIndex: Integer; Count: Integer);
function EnsureCapacity(aCapacity: Integer): Integer;
function Equals(StringBuilder: TStringBuilder): Boolean; reintroduce;
function Insert(Index: Integer; const Value: Boolean): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Byte): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Char): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Currency): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Double): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Smallint): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Integer): TStringBuilder; overload;
function Insert(Index: Integer; const Value: TCharArray): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Int64): TStringBuilder; overload;
function Insert(Index: Integer; const Value: TObject): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Shortint): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Single): TStringBuilder; overload;
function Insert(Index: Integer; const Value: string): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Word): TStringBuilder; overload;
function Insert(Index: Integer; const Value: Cardinal): TStringBuilder; overload;
function Insert(Index: Integer; const Value: UInt64): TStringBuilder; overload;
function Insert(Index: Integer; const Value: string; count: Integer): TStringBuilder; overload;
function Insert(Index: Integer; const Value: TCharArray; startIndex: Integer; charCount: Integer): TStringBuilder; overload;
function Remove(StartIndex: Integer; RemLength: Integer): TStringBuilder;
function Replace(const OldChar: Char; const NewChar: Char): TStringBuilder; overload;
function Replace(const OldValue: string; const NewValue: string): TStringBuilder; overload;
function Replace(const OldChar: Char; const NewChar: Char; StartIndex: Integer; Count: Integer): TStringBuilder; overload;
function Replace(const OldValue: string; const NewValue: string; StartIndex: Integer; Count: Integer): TStringBuilder; overload;
function ToString: string; overload;
function ToString(StartIndex: Integer; StrLength: Integer): string; reintroduce; overload;
procedure SaveToStream(Stream: TStream);
procedure SaveToFile(FileName: string);
procedure LoadFromStream(Stream: TStream);
procedure LoadFromFile(FileName: string);
property Capacity: Integer read GetCapacity write SetCapacity;
property Chars[index: Integer]: Char read GetChars write SetChars; default;
property Length: Integer read GetLength write Set_Length;
property MaxCapacity: Integer read GetMaxCapacity;
end;
function UIntToStr(Value: Cardinal): string; overload;
function UIntToStr(Value: UInt64): string; overload;
resourcestring
SParamIsNegative = 'Parameter %s cannot be a negative value';
SInputBufferExceed = 'Input buffer exceeded for %s = %d, %s = %d';
implementation
function UIntToStr(Value: Cardinal): string;
begin
FmtStr(Result, '%u', [Value]);
end;
function UIntToStr(Value: UInt64): string;
begin
FmtStr(Result, '%u', [Value]);
end;
{ TStringBuilder }
constructor TStringBuilder.Create;
begin
inherited Create;
FMaxCapacity := MaxInt;
Capacity := DefaultCapacity;
FLength := 0;
end;
constructor TStringBuilder.Create(aCapacity: Integer);
begin
inherited Create;
FMaxCapacity := MaxInt;
Capacity := aCapacity;
FLength := 0;
end;
function TStringBuilder.Append(const Value: string): TStringBuilder;
begin
Length := Length + System.Length(Value);
Move(PChar(Value)^, FData[Length - System.Length(Value)], System.Length(Value) * SizeOf(Char));
Result := self;
end;
function TStringBuilder.Append(const Value: Currency): TStringBuilder;
begin
Append(CurrToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Double): TStringBuilder;
begin
Append(FloatToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Char): TStringBuilder;
begin
Length := Length + 1;
FData[Length - 1] := Value;
Result := Self;
end;
function TStringBuilder.Append(const Value: Boolean): TStringBuilder;
begin
Append(BoolToStr(Value, True));
Result := Self;
end;
function TStringBuilder.Append(const Value: Byte): TStringBuilder;
begin
Append(IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Smallint): TStringBuilder;
begin
Append(IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Shortint): TStringBuilder;
begin
Append(IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Single): TStringBuilder;
begin
Append(FloatToStr(Value));
Result := self;
end;
function TStringBuilder.Append(const Value: TObject): TStringBuilder;
begin
{$if CompilerVersion >= 19}
Append(Value.ToString());
{$else}
if Value.InheritsFrom(TComponent) then
Append(TComponent(Value).Name+': '+Value.ClassName)
else Append(Value.ClassName);
{$ifend}
Result := Self;
end;
function TStringBuilder.Append(const Value: Integer): TStringBuilder;
begin
Append(IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Append(const Value: Int64): TStringBuilder;
begin
Append(IntToStr(Value));
Result := Self;
end;
procedure TStringBuilder.CheckBounds(Index: Integer);
begin
if Cardinal(Index) >= Cardinal(Length) then
raise ERangeError.CreateResFmt(@SListIndexError, [Index]);
end;
procedure TStringBuilder.Clear;
begin
Length := 0;
Capacity := DefaultCapacity;
end;
procedure TStringBuilder.CopyTo(SourceIndex: Integer;
const Destination: TCharArray; DestinationIndex, Count: Integer);
begin
if Count < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Count']); // DO NOT LOCALIZE
if DestinationIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['DestinationIndex']); // DO NOT LOCALIZE
if DestinationIndex + Count > System.Length(Destination) then
raise ERangeError.CreateResFmt(@SInputBufferExceed,
['DestinationIndex', DestinationIndex, 'Count', Count]);
if Count > 0 then
begin
CheckBounds(SourceIndex);
CheckBounds(SourceIndex + Count - 1);
Move(FData[SourceIndex], Destination[DestinationIndex], Count * SizeOf(Char));
end;
end;
constructor TStringBuilder.Create(const Value: string);
begin
Create;
Append(Value);
end;
function TStringBuilder.EnsureCapacity(aCapacity: Integer): Integer;
begin
if Cardinal(aCapacity) > Cardinal(MaxCapacity) then
raise ERangeError.CreateResFmt(@SListIndexError, [aCapacity]);
if Capacity < aCapacity then
Capacity := aCapacity;
Result := Capacity;
end;
function TStringBuilder.Equals(StringBuilder: TStringBuilder): Boolean;
begin
Result := (StringBuilder <> nil) and (Length = StringBuilder.Length) and
(MaxCapacity = StringBuilder.MaxCapacity) and
CompareMem(@FData[0], @StringBuilder.FData[0], Length * SizeOf(Char));
end;
procedure TStringBuilder.ExpandCapacity;
var
NewCapacity: Integer;
begin
NewCapacity := Capacity * 2;
if Length > NewCapacity then
NewCapacity := Length * 2; // this line may overflow NewCapacity to a negative value
if NewCapacity > MaxCapacity then
NewCapacity := MaxCapacity;
if NewCapacity < 0 then // if NewCapacity has been overflowed
NewCapacity := Length;
Capacity := NewCapacity;
end;
function TStringBuilder.GetCapacity: Integer;
begin
Result := System.Length(FData);
end;
function TStringBuilder.GetChars(index: Integer): Char;
begin
if Index < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Index']); // DO NOT LOCALIZE
CheckBounds(Index);
Result := FData[Index];
end;
function TStringBuilder.GetLength: Integer;
begin
Result := FLength;
end;
function TStringBuilder.GetMaxCapacity: Integer;
begin
Result := FMaxCapacity;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Integer): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Smallint): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Int64): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: TCharArray): TStringBuilder;
begin
if Index < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Index']); // DO NOT LOCALIZE
if Index > Length then
raise ERangeError.CreateResFmt(@SListIndexError, [Index]);
Length := Length + System.Length(Value);
Move(FData[Index], FData[Index + System.Length(Value)], System.Length(Value) * SizeOf(Char));
Move(Value[0], FData[Index], System.Length(Value) * SizeOf(Char));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Double): TStringBuilder;
begin
Insert(Index, FloatToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Byte): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Boolean): TStringBuilder;
begin
Insert(Index, BoolToStr(Value, True));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Currency): TStringBuilder;
begin
Insert(Index, CurrToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Char): TStringBuilder;
begin
if Index < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Index']); // DO NOT LOCALIZE
if Index > Length then
raise ERangeError.CreateResFmt(@SListIndexError, [Index]);
Length := Length + 1;
Move(FData[Index], FData[Index + 1], (Length - Index - 1) * SizeOf(Char));
FData[Index] := Value;
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: UInt64): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Cardinal): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := self;
end;
function TStringBuilder.Insert(Index: Integer; const Value: TCharArray;
startIndex, charCount: Integer): TStringBuilder;
begin
if Index - 1 >= Length then
raise ERangeError.CreateResFmt(@SListIndexError, [Index])
else if Index < 0 then
raise ERangeError.CreateResFmt(@SListIndexError, [Index]);
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StartIndex']); // DO NOT LOCALIZE
if CharCount < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['CharCount']); // DO NOT LOCALIZE
if StartIndex + CharCount > System.Length(Value) then
raise ERangeError.CreateResFmt(@SInputBufferExceed,
['StartIndex', StartIndex, 'CharCount', CharCount]);
Length := Length + CharCount;
if Length - Index > 0 then
Move(FData[Index], FData[Index + CharCount], (Length - Index) * SizeOf(Char));
Move(Value[StartIndex], FData[Index], CharCount * SizeOf(Char));
Result := Self;
end;
procedure TStringBuilder.LoadFromFile(FileName: string);
var
F: TFileStream;
begin
F := TFileStream.Create(FileName,fmOpenRead);
LoadFromStream(F);
F.Free;
end;
procedure TStringBuilder.LoadFromStream(Stream: TStream);
begin
Capacity := Stream.Size;
Stream.Position := 0;
Stream.ReadBuffer(FData[0],Stream.Size);
Length := Stream.Size;
end;
procedure TStringBuilder.ReduceCapacity;
var
NewCapacity: Integer;
begin
if Length > Capacity div 4 then
Exit;
NewCapacity := Capacity div 2;
if NewCapacity < Length then
NewCapacity := Length;
Capacity := NewCapacity;
end;
function TStringBuilder.Remove(StartIndex, RemLength: Integer): TStringBuilder;
begin
if RemLength <> 0 then
begin
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StartIndex']); // DO NOT LOCALIZE
if RemLength < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['RemLength']); // DO NOT LOCALIZE
CheckBounds(StartIndex);
CheckBounds(StartIndex + RemLength - 1);
if (Length - (StartIndex + RemLength)) > 0 then
Move(FData[StartIndex + RemLength], FData[StartIndex], (Length - (StartIndex + RemLength)) * SizeOf(Char));
Length := Length - RemLength;
ReduceCapacity;
end;
Result := Self;
end;
function TStringBuilder.Replace(const OldValue,
NewValue: string): TStringBuilder;
begin
Result := self;
Replace(OldValue, NewValue, 0, Length);
end;
function TStringBuilder.Replace(const OldChar, NewChar: Char): TStringBuilder;
var
Ptr: PChar;
EndPtr: PChar;
begin
EndPtr := @FData[Length - 1];
Ptr := @FData[0];
while Ptr <= EndPtr do
begin
if Ptr^ = OldChar then
Ptr^ := NewChar;
Inc(Ptr);
end;
Result := Self;
end;
function TStringBuilder.Replace(const OldValue, NewValue: string; StartIndex,
Count: Integer): TStringBuilder;
var
CurPtr: PChar;
EndPtr: PChar;
Index: Integer;
EndIndex: Integer;
oldLen, newLen: Integer;
begin
Result := Self;
if Count <> 0 then
begin
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StartIndex']); // DO NOT LOCALIZE
if Count < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Count']); // DO NOT LOCALIZE
if StartIndex + Count > Length then
raise ERangeError.CreateResFmt(@SInputBufferExceed,
['StartIndex', StartIndex, 'Count', Count]);
oldLen := System.Length(OldValue);
newLen := System.Length(NewValue);
Index := StartIndex;
CurPtr := @FData[StartIndex];
EndIndex := StartIndex + Count - oldLen;
EndPtr := @FData[EndIndex];
while CurPtr <= EndPtr do
begin
if CurPtr^ = OldValue[1] then
begin
if StrLComp(CurPtr, PChar(OldValue), oldLen) = 0 then
begin
if _Replace(Index, OldValue, NewValue) then
begin
CurPtr := @FData[Index];
EndPtr := @FData[EndIndex];
end;
Inc(CurPtr, newLen - 1);
Inc(Index, newLen - 1);
Inc(EndPtr, newLen - oldLen);
Inc(EndIndex, newLen - oldLen);
end;
end;
Inc(CurPtr);
Inc(Index);
end;
end;
end;
function TStringBuilder.Replace(const OldChar, NewChar: Char; StartIndex,
Count: Integer): TStringBuilder;
var
Ptr: PChar;
EndPtr: PChar;
begin
if Count <> 0 then
begin
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StartIndex']); // DO NOT LOCALIZE
if Count < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Count']); // DO NOT LOCALIZE
CheckBounds(StartIndex);
CheckBounds(StartIndex + Count - 1);
EndPtr := @FData[StartIndex + Count - 1];
Ptr := @FData[StartIndex];
while Ptr <= EndPtr do
begin
if Ptr^ = OldChar then
Ptr^ := NewChar;
Inc(Ptr);
end;
end;
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer; const Value: string;
count: Integer): TStringBuilder;
var
I: Integer;
begin
for I := 0 to Count - 1 do
Insert(Index, Value);
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Word): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Shortint): TStringBuilder;
begin
Insert(Index, IntToStr(Value));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: TObject): TStringBuilder;
begin
{$if CompilerVersion >= 19}
Insert(Index, Value.ToString());
{$else}
Insert(Index, IntToStr(Integer(Value)));
{$ifend}
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: string): TStringBuilder;
begin
if Index < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Index']); // DO NOT LOCALIZE
if Index > Length then
raise ERangeError.CreateResFmt(@SListIndexError, [Index]);
Length := Length + System.Length(Value);
Move(FData[Index], FData[Index + System.Length(Value)], (Length - System.Length(Value) - Index) * SizeOf(Char));
Move(Value[1], FData[Index], System.Length(Value) * SizeOf(Char));
Result := Self;
end;
function TStringBuilder.Insert(Index: Integer;
const Value: Single): TStringBuilder;
begin
Insert(Index, FloatToStr(Value));
Result := Self;
end;
procedure TStringBuilder.SaveToFile(FileName: string);
var
FileStream: TFileStream;
begin
FileStream := TFileStream.Create(FileName,fmOpenWrite);
SaveToStream(FileStream);
FileStream.Free;
end;
procedure TStringBuilder.SaveToStream(Stream: TStream);
begin
Stream.WriteBuffer(FData[0],Length * SizeOf(Char));
end;
procedure TStringBuilder.SetCapacity(const Value: Integer);
begin
if Value < Length then
raise ERangeError.CreateResFmt(@SListCapacityError, [Value]);
if Value > FMaxCapacity then
raise ERangeError.CreateResFmt(@SListCapacityError, [Value]);
SetLength(FData, Value);
end;
procedure TStringBuilder.SetChars(index: Integer; const Value: Char);
begin
if Index < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Index']); // DO NOT LOCALIZE
CheckBounds(Index);
FData[Index] := Value;
end;
procedure TStringBuilder.Set_Length(const Value: Integer);
var
LOldLength: Integer;
begin
if Value < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['Value']); // DO NOT LOCALIZE
if Value > MaxCapacity then
raise ERangeError.CreateResFmt(@SListCapacityError, [Value]);
LOldLength := FLength;
try
FLength := Value;
if FLength > Capacity then
ExpandCapacity;
except
on E: EOutOfMemory do
FLength := LOldLength;
end;
end;
function TStringBuilder.ToString: string;
begin
SetLength(Result, Length);
Move(FData[0], Result[1], Length * SizeOf(Char));
end;
function TStringBuilder.ToString(StartIndex, StrLength: Integer): string;
begin
if StrLength <> 0 then
begin
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StartIndex']); // DO NOT LOCALIZE
if StrLength < 0 then
raise ERangeError.CreateResFmt(@SParamIsNegative, ['StrLength']); // DO NOT LOCALIZE
CheckBounds(StartIndex);
CheckBounds(StartIndex + StrLength - 1);
SetLength(Result, StrLength);
Move(FData[StartIndex], Result[1], StrLength * SizeOf(Char));
end
else Result := '';
end;
function TStringBuilder._Replace(Index: Integer; const Old,
New: string): Boolean;
var
OldCapacity: Integer;
SizeChange: Integer;
begin
Result := False;
SizeChange := System.Length(New) - System.Length(Old);
if SizeChange = 0 then
begin
Move(New[1], FData[Index], System.Length(New) * SizeOf(Char));
end
else
begin
if SizeChange > 0 then
begin
OldCapacity := Capacity;
Length := Length + SizeChange;
if OldCapacity <> Capacity then
Result := True;
end;
Move(FData[Index + System.Length(Old)], FData[Index + System.Length(New)], (Length - (System.Length(Old) + Index)) * SizeOf(Char));
Move(New[1], FData[Index], System.Length(New) * SizeOf(Char));
if SizeChange < 0 then
Length := Length + SizeChange;
end;
end;
function TStringBuilder.Append(const Value: Word): TStringBuilder;
begin
Append(IntToStr(Value));
Result := self;
end;
function TStringBuilder.Append(const Value: TCharArray): TStringBuilder;
var
I: Integer;
begin
Result := self;
for I := 0 to System.Length(Value) - 1 do
if Value[I] = #0 then
Break;
Append(Value, 0, I);
end;
function TStringBuilder.Append(const Value: UInt64): TStringBuilder;
begin
Append(UIntToStr(Value));
Result := self;
end;
function TStringBuilder.Append(const Value: Cardinal): TStringBuilder;
begin
Append(UIntToStr(Value));
Result := self;
end;
function TStringBuilder.Append(const Value: string; StartIndex,
Count: Integer): TStringBuilder;
begin
if StartIndex + Count > System.Length(Value) then
raise ERangeError.CreateResFmt(@SListIndexError, [StartIndex]);
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SListIndexError, [StartIndex]);
Length := Length + Count;
Move(Value[StartIndex + 1], FData[Length - Count], Count * SizeOf(Char));
Result := Self;
end;
function TStringBuilder.AppendFormat(const Format: string;
const Args: array of const): TStringBuilder;
begin
Append(SysUtils.Format(Format, Args));
Result := Self;
end;
function TStringBuilder.AppendLine: TStringBuilder;
begin
Append(sLineBreak);
Result := Self;
end;
function TStringBuilder.AppendLine(const Value: string): TStringBuilder;
begin
Append(Value);
AppendLine;
Result := Self;
end;
function TStringBuilder.Append(const Value: TCharArray; StartIndex,
CharCount: Integer): TStringBuilder;
begin
if StartIndex + CharCount > System.Length(Value) then
raise ERangeError.CreateResFmt(@SListIndexError, [StartIndex]);
if StartIndex < 0 then
raise ERangeError.CreateResFmt(@SListIndexError, [StartIndex]);
Length := Length + CharCount;
Move(Value[StartIndex], FData[Length - CharCount], CharCount * SizeOf(Char));
Result := self;
end;
function TStringBuilder.Append(const Value: Char;
RepeatCount: Integer): TStringBuilder;
begin
Append(System.StringOfChar(Value, RepeatCount));
Result := Self;
end;
end.

转自：http://www.cnblogs.com/DxSoft/archive/2010/01/03/1638242.html

http://blog.csdn.net/rznice/article/details/8016565

TstringBuilder Delphi2007版的更多相关文章

zw版·全程图解Halcon控件安装（delphi2007版）
zw版·全程图解Halcon控件安装(delphi2007版) delphi+halcon,这个组合,可以说是图像分析的神级配置,无论是开发效率,还是运行实在是太高了,分分钟秒杀c+opencv,py ...
《zw版·Halcon入门教程与内置demo》
<zw版·Halcon入门教程与内置demo> halcon系统的中文教程很不好找,而且大部分是v10以前的版本. 例如,QQ群: 247994767(Delphi与halcon), 共享 ...
Delphi2007精简版加载Borland.Studio.Together.dll错误解决办法
安装Delphi2007精简版,启动提示Borland.Studio.Together.dll加载错误,错误信息如下: Failed to load IDE add in 'C:\Program Fi ...
问题-[delphi2007、2010]无法二次启动，报EditorLineEnds.ttr被占用，进程一直有bds.exe？
问题现象:delphi2007.2010无法二次启动,报EditorLineEnds.ttr被占用,而且进程中一直有bds.exe的进程? 问题原因:问题处理:方法一:可能是系统更新的东东造在的.KB ...
Delphi2007中正确调用SetWindowLong隐藏程序任务栏图标
http://terony.blog.sohu.com/71347192.html‍ Delphi2007中正确调用SetWindowLong隐藏程序任务栏图标标签: Delphi2007 SetW ...
读书笔记：JavaScript DOM 编程艺术（第二版）
读完还是能学到很多的基础知识,这里记录下,方便回顾与及时查阅. 内容也有自己的一些补充. JavaScript DOM 编程艺术(第二版) 1.JavaScript简史 JavaScript由Nets ...
jQuery实践-网页版2048小游戏
▓▓▓▓▓▓ 大致介绍看了一个实现网页版2048小游戏的视频,觉得能做出自己以前喜欢玩的小游戏很有意思便自己动手试了试,真正的验证了这句话-不要以为你以为的就是你以为的,看视频时觉得看懂了,会写了, ...
一起学微软Power BI系列-使用技巧(4)Power BI中国版企业环境搭建和帐号问题
千呼万唤的Power BI中国版终于落地了,相信12月初的微软技术大会之后已经铺天盖地的新闻出现了,不错,Power BI中国版真的来了,但还有些遗憾,国际版的一些重量级服务如power bi emb ...
将表里的数据批量生成INSERT语句的存储过程增强版
将表里的数据批量生成INSERT语句的存储过程增强版有时候,我们需要将某个表里的数据全部或者根据查询条件导出来,迁移到另一个相同结构的库中目前SQL Server里面是没有相关的工具根据查询条件 ...

随机推荐

JS错误记录 - getStyle代替offset、任意值运动框
本次练习错误总结: 1. 改变border的宽度,属性名称不是直接写border,而是borderWidth. 2. 运动函数 -- 清除定时器 -- 开启新的定时器. 不是在新定时器开启之后再清除 ...
tomcat 服务形式检测
http://blog.chinaunix.net/uid-20449851-id-2369842.html
C#游戏开发高速入门 2.1 构建游戏场景
C#游戏开发高速入门 2.1 构建游戏场景假设已经计划好了要编写什么样的游戏,在打开Unity以后.要做的第一件事情就是构建游戏场景(Scene).游戏场景就是玩家游戏时,在游戏视图中看到的一切. ...
C语言结构体的字节对齐原则
为什么要对齐? 现代计算机中内存空间都是按照byte划分的,从理论上讲似乎对任何类型的变量的访问可以从任何地址开始,但实际情况是在访问特定类型变量的时候经常在特定的内存地址访问,这就需要各种类型数据 ...
面向对象的CSS
原文简书原文:https://www.jianshu.com/p/cb5e9f56ddcc 大纲 1.面向对象的CSS(OOCSS)概念 2.面向对象的CSS的作用 3.面向对象的CSS的注意事项 ...
Ansible 部署
环境: vim /etc/hosts 192.168.199.61 Ansible 192.168.199.60 Nginx1192.168.199.62 Nginx2192.168.199.63 H ...
自己定义View——坑、技巧、调优
<span style="font-size:14px; font-family: Arial, Helvetica, sans-serif; background-color: rg ...
Android之RecyclerView简单使用(三)
使用过ListView滴小伙伴都知道.ListView有这样一个属性android:divider,用来设置每一个item之间切割线滴属性.问题来了,那么RecyclerView这个控件有没有这个属性 ...
Java 开源博客——B3log Solo 0.6.7 正式版发布了！
Java 开源博客 -- B3log Solo 0.6.7 正式版发布了!欢迎大家下载. 另外,欢迎观摩 B3log 团队的新项目:Wide,也非常欢迎大家参与进来 :-) 特性基于标签的文章分类 ...
python的报错
1;; //////////////////////////////////////////////////////////////////////////////////////////////// ...

TstringBuilder Delphi2007版

TstringBuilder Delphi2007版的更多相关文章

随机推荐

热门专题