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// Upgraded to Delphi 2009: Sebastian Zierer
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// TODO-UNICODE - Upgrade to Unicode (BM asm code is a blocking issue)
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(* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TurboPower SysTools
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*
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* The Initial Developer of the Original Code is
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* TurboPower Software
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*
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* Portions created by the Initial Developer are Copyright (C) 1996-2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* ***** END LICENSE BLOCK ***** *)
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{*********************************************************}
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{* SysTools: StOStr.pas 4.04 *}
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{*********************************************************}
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{* SysTools: String class *}
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{*********************************************************}
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{$I StDefine.inc}
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unit StOStr;
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interface
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uses
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Windows, SysUtils, Classes,
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StConst, StBase, StStrZ;
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const
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{.Z+}
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DefAllocSize = 8;
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DefDelimiters = ' ';
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DefQuote = '''';
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DefRepeatValue = 1;
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DefResetRepeat = True;
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DefTabSize = 8;
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DefWrap = 80;
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{.Z-}
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type
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TStString = class(TPersistent)
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private
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{.Z+}
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protected {private}
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FAlloc : Cardinal;
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FBM : BTable;
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FBMString : PAnsiChar;
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FCursor : PAnsiChar;
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FDelimiters : PAnsiChar;
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FEnableCursor : Boolean;
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FItems : TStringList;
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FOneBased : Boolean;
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FRepeatValue : Cardinal;
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FResetRepeat : Boolean;
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FQuote : AnsiChar;
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FString : PAnsiChar;
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FTabSize : Byte;
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FTemp : PAnsiChar;
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FTempAlloc : Cardinal;
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FWrap : Cardinal;
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FLineTermChar: AnsiChar;
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FLineTerminator: TStLineTerminator;
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protected
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procedure SetLineTerm(const Value: TStLineTerminator);
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procedure SetLineTermChar(const Value: AnsiChar);
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procedure AddIntToList(Num : LongInt);
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procedure AllocTemp(Size : Cardinal);
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procedure BMMakeTable(S : PAnsiChar);
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procedure CheckAlloc(Size : Cardinal);
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function DesiredCursor : PAnsiChar;
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procedure FixCursor(Pos, Size : Cardinal; Delete : Boolean);
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function Get(Index : Cardinal) : AnsiChar;
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function GetAsciiCount : Cardinal;
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function GetAsShortStr : ShortString;
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function GetCursorPos : Cardinal;
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function GetDelimiters : AnsiString;
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function GetLength : Cardinal;
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function GetRelativePos(Pos : Cardinal) : Cardinal;
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function GetSoundex : AnsiString;
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function GetWordCount : Cardinal;
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procedure Put(Index : Cardinal; Item : AnsiChar);
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procedure SetAllocLength(Value : Cardinal);
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procedure SetAsShortStr(Value : ShortString);
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procedure SetCursorPos(Value : Cardinal);
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procedure SetDelimiters(Value : AnsiString);
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procedure SetItems(Value : TStringList);
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function SuggestSize(Size : Cardinal) : Cardinal;
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procedure TempToString;
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procedure UpdateCursor(Pos : Cardinal);
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function GetAsLongStr : AnsiString;
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procedure SetAsLongStr(Value : AnsiString);
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function GetAsVariant : Variant;
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procedure SetAsVariant(Value : Variant);
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function MakeTerminator(var Terminator : PAnsiChar) : Integer; {!!.01}
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{.Z-}
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public
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constructor Create;
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constructor CreateAlloc(Size : Cardinal); virtual;
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constructor CreateS(const S : AnsiString); virtual;
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constructor CreateZ(const S : PAnsiChar); virtual;
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constructor CreateV(const S : Variant); virtual;
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destructor Destroy; override;
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procedure AppendPChar(S : PAnsiChar);
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procedure AppendString(S : AnsiString);
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function AsciiPosition(N : Cardinal; var Pos : Cardinal) : Boolean;
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function BMSearch(const S : AnsiString; var Pos : Cardinal) : Boolean;
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function BMSearchUC(const S : AnsiString; var Pos : Cardinal) : Boolean;
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procedure Center(Size : Cardinal);
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procedure CenterCh(const C : AnsiChar; Size : Cardinal);
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function CharCount(const C : AnsiChar) : Cardinal;
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function CharExists(const C : AnsiChar) : boolean;
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procedure CharStr(const C : AnsiChar; Size : Cardinal);
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procedure ClearItems;
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procedure CursorNextWord;
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procedure CursorNextWordPrim;
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procedure CursorPrevWord;
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procedure CursorPrevWordPrim;
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procedure CursorToEnd;
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procedure DeleteAsciiAtCursor;
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procedure DeleteAtCursor(Length : Cardinal);
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procedure DeleteWordAtCursor;
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procedure Detab;
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procedure Entab;
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function ExtractAscii(N : Cardinal) : AnsiString;
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function ExtractWord(N : Cardinal) : AnsiString;
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procedure Filter(const Filters : PAnsiChar);
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function GetAsciiAtCursor : AnsiString;
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function GetAsciiAtCursorZ(Dest : PAnsiChar) : PAnsiChar;
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function GetAsPChar(Dest : PAnsiChar) : PAnsiChar;
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function GetWordAtCursor : AnsiString;
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function GetWordAtCursorZ(Dest : PAnsiChar) : PAnsiChar;
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procedure InsertLineTerminatorAtCursor;
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procedure InsertLineTerminator(Pos : Cardinal);
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procedure InsertPCharAtCursor(S : PAnsiChar);
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procedure InsertStringAtCursor(S : AnsiString);
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procedure ItemsToString;
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procedure LeftPad(Size : Cardinal);
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procedure LeftPadCh(const C : AnsiChar; Size : Cardinal);
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function MakeLetterSet : LongInt;
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procedure MoveCursor(Delta : Integer);
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procedure Pack;
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procedure Pad(Size : Cardinal);
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procedure PadCh(const C : AnsiChar; Size : Cardinal);
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procedure ResetCursor;
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procedure Scramble(const Key : AnsiString);
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procedure SetAsPChar(S : PAnsiChar);
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function SizeAsciiAtCursor(InclTrailers : Boolean) : Cardinal;
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function SizeWordAtCursor(InclTrailers : Boolean) : Cardinal;
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procedure StrChDelete(Pos : Cardinal);
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procedure StrChInsert(const C : AnsiChar; Pos : Cardinal);
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function StrChPos(const C : AnsiChar; var Pos : Cardinal) : Boolean;
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procedure StringToItems;
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procedure StripLineTerminators;
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procedure StrStDelete(const Pos, Length : Cardinal);
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procedure StrStInsert(const S : AnsiString; Pos : Cardinal);
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function StrStPos(const S : AnsiString; var Pos : Cardinal) : Boolean;
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procedure Substitute(FromStr, ToStr : PAnsiChar);
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procedure Trim;
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procedure TrimLead;
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procedure TrimSpaces;
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procedure TrimTrail;
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function WordPosition(N : Cardinal; var Pos : Cardinal) : Boolean;
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procedure WrapToItems;
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property AllocLength : Cardinal
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read FAlloc write SetAllocLength;
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property AsciiCount : Cardinal
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read GetAsciiCount;
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property AsLongStr : AnsiString
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read GetAsLongStr write SetAsLongStr;
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property AsVariant : Variant
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read GetAsVariant write SetAsVariant;
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property AsShortStr : ShortString
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read GetAsShortStr write SetAsShortStr;
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property AtIndex[Index: Cardinal]: AnsiChar
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read Get write Put; default;
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property CursorPos : Cardinal
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read GetCursorPos write SetCursorPos;
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property Delimiters : AnsiString
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read GetDelimiters write SetDelimiters;
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property EnableCursor : Boolean
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read FEnableCursor write FEnableCursor;
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property Length : Cardinal
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read GetLength;
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property LineTermChar : AnsiChar
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read FLineTermChar write SetLineTermChar default #10;
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property LineTerminator : TStLineTerminator
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read FLineTerminator write SetLineTerm default ltCRLF;
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property Items : TStringList
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read FItems write SetItems;
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property OneBased : Boolean
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read FOneBased write FOneBased;
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property RepeatValue : Cardinal
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read FRepeatValue write FRepeatValue;
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property ResetRepeat : Boolean
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read FResetRepeat write FResetRepeat;
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property Soundex : AnsiString
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read GetSoundex;
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property Quote : AnsiChar
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read FQuote write FQuote;
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property TabSize : Byte
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read FTabSize write FTabSize;
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property WordCount : Cardinal
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read GetWordCount;
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property WrapColumn : Cardinal
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read FWrap write FWrap;
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end;
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implementation
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{$IFNDEF UNICODE}
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function AnsiStrAlloc(Size: Cardinal): PAnsiChar;
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begin
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Result := StrAlloc(Size);
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end;
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{$ENDIF}
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constructor TStString.Create;
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{- Create nil string object. }
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begin
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inherited Create;
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SetDelimiters(DefDelimiters);
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FItems := TStringList.Create;
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FTabSize := DefTabSize;
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FQuote := DefQuote;
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FRepeatValue := DefRepeatValue;
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FResetRepeat := DefResetRepeat;
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FWrap := DefWrap;
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FLineTerminator := ltCRLF;
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FLineTermChar := #10;
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end;
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constructor TStString.CreateAlloc(Size : Cardinal);
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{- Create string object allocated to given size. }
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var
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AllocSize : Cardinal;
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begin
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Create;
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AllocSize := SuggestSize(Size);
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FString := AnsiStrAlloc(AllocSize);
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FString[0] := #0;
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FAlloc := AllocSize;
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ResetCursor;
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end;
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constructor TStString.CreateV(const S : Variant);
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{- Create string object and copy variant into it. }
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var
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Len : Cardinal;
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Temp : AnsiString;
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begin
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Create;
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Temp := S;
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Len := System.Length(Temp);
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FString := AnsiStrAlloc(SuggestSize(Len));
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if Assigned(FString) then begin
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FAlloc := SuggestSize(Len);
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StrCopy(FString, PAnsiChar(Temp));
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end;
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ResetCursor;
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end;
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constructor TStString.CreateS(const S : AnsiString);
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{- Create string object and copy string into it. }
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begin
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Create;
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FString := AnsiStrAlloc(SuggestSize(System.Length(S)));
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if Assigned(FString) then begin
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FAlloc := SuggestSize(System.Length(S));
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StrPCopy(FString, S);
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end;
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ResetCursor;
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end;
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constructor TStString.CreateZ(const S : PAnsiChar);
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{- Create string object and copy PChar into it. }
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begin
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Create;
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FString := AnsiStrAlloc(SuggestSize(StrLen(S)));
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if Assigned(FString) then begin
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StrCopy(FString, S);
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FAlloc := SuggestSize(StrLen(S));
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end;
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ResetCursor;
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end;
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destructor TStString.Destroy;
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{- Dispose string object. }
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begin
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FItems.Free;
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StrDispose(FBMString);
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StrDispose(FDelimiters);
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StrDispose(FString);
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inherited Destroy;
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end;
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procedure TStString.AppendPChar(S : PAnsiChar);
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{- Appends PChar to end of string. }
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var
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Temp : PAnsiChar;
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begin
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CheckAlloc(StrLen(S) + GetLength);
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Temp := StrEnd(FString);
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StrCopy(Temp, S);
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end;
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procedure TStString.AppendString(S : AnsiString);
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{- Appends string to end of string. }
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var
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Temp : PAnsiChar;
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begin
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CheckAlloc(System.Length(S) + LongInt(GetLength));
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Temp := StrEnd(FString);
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StrPCopy(Temp, S);
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end;
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function TStString.AsciiPosition(N : Cardinal; var Pos : Cardinal) : Boolean;
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{- Returns the Pos of the Nth word using ASCII rules. }
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var
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I, Num : Cardinal;
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begin
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Result := False;
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Num := N;
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ClearItems;
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for I := 1 to FRepeatValue do begin
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if AsciiPositionZ(Num, DesiredCursor, FDelimiters, FQuote, Pos) then begin
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if Result = False then Inc(Num);
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Pos := GetRelativePos(Pos);
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Result := True;
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UpdateCursor(Pos);
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if FOneBased then Inc(Pos);
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AddIntToList(Pos);
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end
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else Break;
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end;
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if FResetRepeat then FRepeatValue := DefRepeatValue;
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end;
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function TStString.BMSearch(const S : AnsiString; var Pos : Cardinal) : Boolean;
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{- Performs case sensitive BM search on string. }
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var
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I : Cardinal;
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Temp : PAnsiChar;
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begin
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Result := False;
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|
|
ClearItems;
|
368 |
|
|
Temp := AnsiStrAlloc(Succ(System.Length(S)));
|
369 |
|
|
try
|
370 |
|
|
StrPCopy(Temp, S);
|
371 |
|
|
BMMakeTable(Temp);
|
372 |
|
|
for I := 1 to FRepeatValue do begin
|
373 |
|
|
if BMSearchZ(DesiredCursor^, StrLen(DesiredCursor), FBM, Temp, Pos) then begin
|
374 |
|
|
Result := True;
|
375 |
|
|
Pos := GetRelativePos(Pos);
|
376 |
|
|
UpdateCursor(Pos);
|
377 |
|
|
if FOneBased then Inc(Pos);
|
378 |
|
|
AddIntToList(Pos);
|
379 |
|
|
Inc(FCursor);
|
380 |
|
|
end else Break;
|
381 |
|
|
end;
|
382 |
|
|
if Result then Dec(FCursor);
|
383 |
|
|
finally
|
384 |
|
|
StrDispose(Temp);
|
385 |
|
|
end;
|
386 |
|
|
end;
|
387 |
|
|
|
388 |
|
|
function TStString.BMSearchUC(const S : AnsiString; var Pos : Cardinal) : Boolean;
|
389 |
|
|
{- Performs case insensitive BM search on string. }
|
390 |
|
|
var
|
391 |
|
|
I : Cardinal;
|
392 |
|
|
Temp : PAnsiChar;
|
393 |
|
|
begin
|
394 |
|
|
Result := False;
|
395 |
|
|
ClearItems;
|
396 |
|
|
Temp := AnsiStrAlloc(Succ(System.Length(S)));
|
397 |
|
|
try
|
398 |
|
|
StrPCopy(Temp, S);
|
399 |
|
|
StrUpper(Temp);
|
400 |
|
|
BMMakeTable(Temp);
|
401 |
|
|
for I := 1 to FRepeatValue do begin
|
402 |
|
|
if BMSearchUCZ(DesiredCursor^, StrLen(DesiredCursor), FBM, Temp, Pos) then begin
|
403 |
|
|
Result := True;
|
404 |
|
|
Pos := GetRelativePos(Pos);
|
405 |
|
|
UpdateCursor(Pos);
|
406 |
|
|
if FOneBased then Inc(Pos);
|
407 |
|
|
AddIntToList(Pos);
|
408 |
|
|
Inc(FCursor);
|
409 |
|
|
end else Break;
|
410 |
|
|
end;
|
411 |
|
|
if Result then Dec(FCursor);
|
412 |
|
|
finally
|
413 |
|
|
StrDispose(Temp);
|
414 |
|
|
end;
|
415 |
|
|
end;
|
416 |
|
|
|
417 |
|
|
procedure TStString.Center(Size : Cardinal);
|
418 |
|
|
{- Centers string to Size. }
|
419 |
|
|
begin
|
420 |
|
|
CheckAlloc(Size);
|
421 |
|
|
CenterPrimZ(FString, Size);
|
422 |
|
|
ResetCursor;
|
423 |
|
|
end;
|
424 |
|
|
|
425 |
|
|
procedure TStString.CenterCh(const C : AnsiChar; Size : Cardinal);
|
426 |
|
|
{- Centers string with 'Ch' to Size. }
|
427 |
|
|
begin
|
428 |
|
|
CheckAlloc(Size);
|
429 |
|
|
CenterChPrimZ(FString, C, Size);
|
430 |
|
|
ResetCursor;
|
431 |
|
|
end;
|
432 |
|
|
|
433 |
|
|
function TStString.CharExists(const C : AnsiChar) : boolean;
|
434 |
|
|
{- Determines whether C exists in string. }
|
435 |
|
|
begin
|
436 |
|
|
Result := CharExistsZ(DesiredCursor, C);
|
437 |
|
|
end;
|
438 |
|
|
|
439 |
|
|
function TStString.CharCount(const C : AnsiChar) : Cardinal;
|
440 |
|
|
{- Counts C in string. }
|
441 |
|
|
begin
|
442 |
|
|
Result := CharCountZ(DesiredCursor, C);
|
443 |
|
|
end;
|
444 |
|
|
|
445 |
|
|
procedure TStString.CharStr(const C : AnsiChar; Size : Cardinal);
|
446 |
|
|
{- Fills string to Size with C. }
|
447 |
|
|
begin
|
448 |
|
|
CheckAlloc(Size);
|
449 |
|
|
FString := CharStrZ(FString, C, Size);
|
450 |
|
|
ResetCursor;
|
451 |
|
|
end;
|
452 |
|
|
|
453 |
|
|
procedure TStString.AddIntToList(Num : LongInt);
|
454 |
|
|
{- Adds integer value to Items -- as both numeric value and numeric string. }
|
455 |
|
|
begin
|
456 |
|
|
FItems.AddObject(IntToStr(Num), TObject(Num));
|
457 |
|
|
end;
|
458 |
|
|
|
459 |
|
|
procedure TStString.AllocTemp(Size : Cardinal);
|
460 |
|
|
{- Allocates FTemp to Size. }
|
461 |
|
|
begin
|
462 |
|
|
FTemp := AnsiStrAlloc(Size);
|
463 |
|
|
FTempAlloc := Size;
|
464 |
|
|
end;
|
465 |
|
|
|
466 |
|
|
procedure TStString.BMMakeTable(S : PAnsiChar);
|
467 |
|
|
{- Checks whether table needs to be made -- and makes it. }
|
468 |
|
|
begin
|
469 |
|
|
if Assigned(FBMString) then
|
470 |
|
|
if StrComp(S, FBMString) = 0 then Exit;
|
471 |
|
|
StrDispose(FBMString);
|
472 |
|
|
FBMString := StrNew(S);
|
473 |
|
|
BMMakeTableZ(FBMString, FBM);
|
474 |
|
|
end;
|
475 |
|
|
|
476 |
|
|
procedure TStString.CheckAlloc(Size : Cardinal);
|
477 |
|
|
{- Sets allocated length for string if needed size is > current size. }
|
478 |
|
|
begin
|
479 |
|
|
if FAlloc = 0 then begin
|
480 |
|
|
FString := AnsiStrAlloc(SuggestSize(Size));
|
481 |
|
|
FAlloc := SuggestSize(Size);
|
482 |
|
|
FString[0] := #0;
|
483 |
|
|
ResetCursor;
|
484 |
|
|
end else if Succ(Size) > FAlloc then
|
485 |
|
|
SetAllocLength(Succ(Size));
|
486 |
|
|
end;
|
487 |
|
|
|
488 |
|
|
procedure TStString.ClearItems;
|
489 |
|
|
{- Clears Items list. }
|
490 |
|
|
begin
|
491 |
|
|
FItems.Clear;
|
492 |
|
|
end;
|
493 |
|
|
|
494 |
|
|
procedure TStString.CursorNextWord;
|
495 |
|
|
{- Moves cursor to the beginning of the next word, or terminating null. }
|
496 |
|
|
var
|
497 |
|
|
I : Cardinal;
|
498 |
|
|
begin
|
499 |
|
|
for I := 1 to FRepeatValue do begin
|
500 |
|
|
CursorNextWordPrim;
|
501 |
|
|
end;
|
502 |
|
|
if FResetRepeat then FRepeatValue := DefRepeatValue;
|
503 |
|
|
end;
|
504 |
|
|
|
505 |
|
|
procedure TStString.CursorNextWordPrim;
|
506 |
|
|
{- Moves cursor to the beginning of the next word, or terminating null. }
|
507 |
|
|
var
|
508 |
|
|
Ch : AnsiChar;
|
509 |
|
|
begin
|
510 |
|
|
Ch := FCursor^;
|
511 |
|
|
while (Ch <> #0) and (not CharExistsZ(FDelimiters, Ch)) do begin
|
512 |
|
|
Inc(FCursor);
|
513 |
|
|
Ch := FCursor^;
|
514 |
|
|
end;
|
515 |
|
|
while (Ch <> #0) and (CharExistsZ(FDelimiters, Ch)) do begin
|
516 |
|
|
Inc(FCursor);
|
517 |
|
|
Ch := FCursor^;
|
518 |
|
|
end;
|
519 |
|
|
end;
|
520 |
|
|
|
521 |
|
|
procedure TStString.CursorPrevWord;
|
522 |
|
|
{- Move Cursor to beginning of prev word, or first word in string. }
|
523 |
|
|
var
|
524 |
|
|
I : Cardinal;
|
525 |
|
|
begin
|
526 |
|
|
for I := 1 to FRepeatValue do begin
|
527 |
|
|
CursorPrevWordPrim;
|
528 |
|
|
end;
|
529 |
|
|
if FResetRepeat then FRepeatValue := DefRepeatValue;
|
530 |
|
|
end;
|
531 |
|
|
|
532 |
|
|
|
533 |
|
|
procedure TStString.CursorPrevWordPrim;
|
534 |
|
|
{- Move Cursor to beginning of prev word, or first word in string. }
|
535 |
|
|
var
|
536 |
|
|
Ch : AnsiChar;
|
537 |
|
|
i : integer;
|
538 |
|
|
begin
|
539 |
|
|
Ch := FCursor^;
|
540 |
|
|
{go around twice to get to the previous word, not the current word}
|
541 |
|
|
for i := 1 to 2 do begin
|
542 |
|
|
while (FCursor <> FString) and (CharExistsZ(FDelimiters, Ch)) do begin
|
543 |
|
|
Dec(FCursor);
|
544 |
|
|
Ch := FCursor^;
|
545 |
|
|
end;
|
546 |
|
|
while (FCursor <> FString) and (not CharExistsZ(FDelimiters, Ch)) do begin
|
547 |
|
|
Dec(FCursor);
|
548 |
|
|
Ch := FCursor^;
|
549 |
|
|
end;
|
550 |
|
|
end;
|
551 |
|
|
{now get off the delimiter }
|
552 |
|
|
if (FCursor <> FString) then
|
553 |
|
|
Inc(FCursor);
|
554 |
|
|
end;
|
555 |
|
|
|
556 |
|
|
procedure TStString.CursorToEnd;
|
557 |
|
|
{- Set cursor to null terminator at the end of string. }
|
558 |
|
|
begin
|
559 |
|
|
FCursor := StrEnd(FString);
|
560 |
|
|
end;
|
561 |
|
|
|
562 |
|
|
procedure TStString.DeleteAsciiAtCursor;
|
563 |
|
|
{- Deletes word (and any trailing delimiters) at cursor following ASCII rules. }
|
564 |
|
|
var
|
565 |
|
|
I : Cardinal;
|
566 |
|
|
begin
|
567 |
|
|
for I := 1 to FRepeatValue do begin
|
568 |
|
|
StrStDeletePrimZ(FCursor, 0, SizeAsciiAtCursor(True));
|
569 |
|
|
end;
|
570 |
|
|
if FResetRepeat then FRepeatValue := DefRepeatValue;
|
571 |
|
|
end;
|
572 |
|
|
|
573 |
|
|
procedure TStString.DeleteAtCursor(Length : Cardinal);
|
574 |
|
|
{- Deletes Length number of characters at cursor. }
|
575 |
|
|
begin
|
576 |
|
|
StrStDeletePrimZ(FCursor, 0, Length);
|
577 |
|
|
end;
|
578 |
|
|
|
579 |
|
|
procedure TStString.DeleteWordAtCursor;
|
580 |
|
|
{- Deletes word (and any trailing delimiters) at cursor. }
|
581 |
|
|
var
|
582 |
|
|
I : Cardinal;
|
583 |
|
|
begin
|
584 |
|
|
for I := 1 to FRepeatValue do begin
|
585 |
|
|
StrStDeletePrimZ(FCursor, 0, SizeWordAtCursor(True));
|
586 |
|
|
end;
|
587 |
|
|
if FResetRepeat then FRepeatValue := DefRepeatValue;
|
588 |
|
|
end;
|
589 |
|
|
|
590 |
|
|
procedure TStString.Detab;
|
591 |
|
|
{- Detabs string. }
|
592 |
|
|
begin
|
593 |
|
|
AllocTemp(SuggestSize(FAlloc + (CharCountZ(FString, #9)*FTabSize)));
|
594 |
|
|
if Assigned(FTemp) then begin
|
595 |
|
|
DetabZ(FTemp, FString, FTabSize);
|
596 |
|
|
TempToString;
|
597 |
|
|
end;
|
598 |
|
|
ResetCursor;
|
599 |
|
|
end;
|
600 |
|
|
|
601 |
|
|
procedure TStString.Entab;
|
602 |
|
|
{- Entabs string. }
|
603 |
|
|
begin
|
604 |
|
|
AllocTemp(FAlloc);
|
605 |
|
|
if Assigned(FTemp) then begin
|
606 |
|
|
EntabZ(FTemp, FString, FTabsize);
|
607 |
|
|
TempToString;
|
608 |
|
|
end;
|
609 |
|
|
ResetCursor;
|
610 |
|
|
end;
|
611 |
|
|
|
612 |
|
|
function TStString.ExtractAscii(N : Cardinal) : AnsiString;
|
613 |
|
|
{- Extracts the N'th word in string. }
|
614 |
|
|
var
|
615 |
|
|
OldCursor : PAnsiChar;
|
616 |
|
|
Position : Cardinal;
|
617 |
|
|
begin
|
618 |
|
|
Result := '';
|
619 |
|
|
OldCursor := FCursor;
|
620 |
|
|
if AsciiPositionZ(N, FString, FDelimiters, FQuote, Position) then
|
621 |
|
|
FCursor := FString + Position
|
622 |
|
|
else Exit;
|
623 |
|
|
Result := GetAsciiAtCursor;
|
624 |
|
|
FCursor := OldCursor;
|
625 |
|
|
end;
|
626 |
|
|
|
627 |
|
|
function TStString.ExtractWord(N : Cardinal) : AnsiString;
|
628 |
|
|
{- Extracts the N'th word in string. }
|
629 |
|
|
var
|
630 |
|
|
OldCursor : PAnsiChar;
|
631 |
|
|
Position : Cardinal;
|
632 |
|
|
begin
|
633 |
|
|
Result := '';
|
634 |
|
|
OldCursor := FCursor;
|
635 |
|
|
if WordPositionZ(N, FString, FDelimiters, Position) then
|
636 |
|
|
FCursor := FString + Position
|
637 |
|
|
else Exit;
|
638 |
|
|
Result := GetWordAtCursor;
|
639 |
|
|
FCursor := OldCursor;
|
640 |
|
|
end;
|
641 |
|
|
|
642 |
|
|
procedure TStString.Filter(const Filters : PAnsiChar);
|
643 |
|
|
{- Filters characters from string. }
|
644 |
|
|
begin
|
645 |
|
|
AllocTemp(FAlloc);
|
646 |
|
|
FilterZ(FTemp, DesiredCursor, Filters);
|
647 |
|
|
TempToString;
|
648 |
|
|
ResetCursor;
|
649 |
|
|
end;
|
650 |
|
|
|
651 |
|
|
procedure TStString.FixCursor(Pos, Size : Cardinal; Delete : Boolean);
|
652 |
|
|
{- Fixes cursor position following an insertion or deletion. }
|
653 |
|
|
begin
|
654 |
|
|
if (FCursor - FString) < LongInt(Pos) then
|
655 |
|
|
Exit;
|
656 |
|
|
if Delete then begin
|
657 |
|
|
FCursor := FCursor - Size;
|
658 |
|
|
if (FCursor - FString) < LongInt(Pos) then
|
659 |
|
|
FCursor := FString + Pos;
|
660 |
|
|
end else begin
|
661 |
|
|
if (FCursor - FString) = LongInt(Pos) then
|
662 |
|
|
Exit;
|
663 |
|
|
FCursor := FCursor + Size;
|
664 |
|
|
end;
|
665 |
|
|
end;
|
666 |
|
|
|
667 |
|
|
function TStString.MakeLetterSet : LongInt;
|
668 |
|
|
{- Performs MakeLetterSetZ on the word at the Cursor. }
|
669 |
|
|
var
|
670 |
|
|
Temp : PAnsiChar;
|
671 |
|
|
begin
|
672 |
|
|
Temp := AnsiStrAlloc(Succ(SizeWordAtCursor(False)));
|
673 |
|
|
try
|
674 |
|
|
GetWordAtCursorZ(Temp);
|
675 |
|
|
Result := MakeLetterSetZ(Temp);
|
676 |
|
|
finally
|
677 |
|
|
StrDispose(Temp);
|
678 |
|
|
end;
|
679 |
|
|
end;
|
680 |
|
|
|
681 |
|
|
procedure TStString.MoveCursor(Delta : Integer);
|
682 |
|
|
{- Moves Cursor by Delta characters. }
|
683 |
|
|
begin
|
684 |
|
|
Inc(FCursor, Delta);
|
685 |
|
|
if FCursor < FString then
|
686 |
|
|
FCursor := FString;
|
687 |
|
|
if FCursor > (FString + Succ(GetLength)) then
|
688 |
|
|
CursorToEnd;
|
689 |
|
|
end;
|
690 |
|
|
|
691 |
|
|
function TStString.GetAsciiAtCursor : AnsiString;
|
692 |
|
|
{- Gets the word that the Cursor is pointing to -- returns string. }
|
693 |
|
|
var
|
694 |
|
|
I, Size : Longint;
|
695 |
|
|
begin
|
696 |
|
|
Size := SizeAsciiAtCursor(False);
|
697 |
|
|
SetLength(Result, Size);
|
698 |
|
|
for I := 0 to Pred(Size) do
|
699 |
|
|
Result[Succ(I)] := FCursor[I];
|
700 |
|
|
end;
|
701 |
|
|
|
702 |
|
|
function TStString.GetAsciiAtCursorZ(Dest : PAnsiChar) : PAnsiChar;
|
703 |
|
|
{- Gets the word that the Cursor is pointing to -- returns PChar. }
|
704 |
|
|
var
|
705 |
|
|
I, Size : Longint;
|
706 |
|
|
begin
|
707 |
|
|
Size := SizeAsciiAtCursor(False);
|
708 |
|
|
Result := Dest;
|
709 |
|
|
for I := 0 to Pred(Size) do
|
710 |
|
|
Dest[I] := FCursor[I];
|
711 |
|
|
Dest[Size] := #0;
|
712 |
|
|
end;
|
713 |
|
|
|
714 |
|
|
function TStString.GetAsPChar(Dest : PAnsiChar) : PAnsiChar;
|
715 |
|
|
{- Exports string as a null-terminated string. }
|
716 |
|
|
begin
|
717 |
|
|
Result := Dest;
|
718 |
|
|
StrCopy(Result, FString);
|
719 |
|
|
end;
|
720 |
|
|
|
721 |
|
|
function TStString.GetWordAtCursor : AnsiString;
|
722 |
|
|
{- Gets the word that the Cursor is pointing to -- returns string. }
|
723 |
|
|
var
|
724 |
|
|
I, Size : Longint;
|
725 |
|
|
begin
|
726 |
|
|
Size := SizeWordAtCursor(False);
|
727 |
|
|
SetLength(Result, Size);
|
728 |
|
|
for I := 0 to Pred(Size) do
|
729 |
|
|
Result[Succ(I)] := FCursor[I];
|
730 |
|
|
end;
|
731 |
|
|
|
732 |
|
|
function TStString.GetWordAtCursorZ(Dest : PAnsiChar) : PAnsiChar;
|
733 |
|
|
{- Gets the word that the Cursor is pointing to -- returns PChar. }
|
734 |
|
|
var
|
735 |
|
|
I, Size : Longint;
|
736 |
|
|
begin
|
737 |
|
|
Size := SizeWordAtCursor(False);
|
738 |
|
|
Result := Dest;
|
739 |
|
|
for I := 0 to Pred(Size) do
|
740 |
|
|
Dest[I] := FCursor[I];
|
741 |
|
|
Dest[Size] := #0;
|
742 |
|
|
end;
|
743 |
|
|
|
744 |
|
|
procedure TStString.Pack;
|
745 |
|
|
{- Sets string allocation to minimum size. }
|
746 |
|
|
var
|
747 |
|
|
StrLen : Cardinal;
|
748 |
|
|
begin
|
749 |
|
|
StrLen := GetLength;
|
750 |
|
|
if SuggestSize(StrLen) < FAlloc then
|
751 |
|
|
SetAllocLength(StrLen);
|
752 |
|
|
end;
|
753 |
|
|
|
754 |
|
|
procedure TStString.Pad(Size : Cardinal);
|
755 |
|
|
{- Pads string. }
|
756 |
|
|
begin
|
757 |
|
|
CheckAlloc(Size);
|
758 |
|
|
PadPrimZ(FString, Size);
|
759 |
|
|
ResetCursor;
|
760 |
|
|
end;
|
761 |
|
|
|
762 |
|
|
|
763 |
|
|
function TStString.MakeTerminator(var Terminator : PAnsiChar) : Integer; {!!.01}
|
764 |
|
|
begin
|
765 |
|
|
Result := 0;
|
766 |
|
|
case self.LineTerminator of
|
767 |
|
|
ltNone :;
|
768 |
|
|
ltCR, ltLF, ltOther :begin
|
769 |
|
|
Result := 2;
|
770 |
|
|
GetMem(Terminator, Result);
|
771 |
|
|
case LineTerminator of
|
772 |
|
|
ltCR : StrCopy(Terminator, #13);
|
773 |
|
|
ltLF : StrCopy(Terminator, #10);
|
774 |
|
|
ltOther : begin
|
775 |
|
|
Terminator[0] := FLineTermChar;
|
776 |
|
|
Terminator[1] := #0;
|
777 |
|
|
end;
|
778 |
|
|
end;
|
779 |
|
|
end;
|
780 |
|
|
ltCRLF : begin
|
781 |
|
|
Result := 3;
|
782 |
|
|
GetMem(Terminator, Result);
|
783 |
|
|
StrCopy(Terminator, #13#10);
|
784 |
|
|
end;
|
785 |
|
|
end;
|
786 |
|
|
end;
|
787 |
|
|
|
788 |
|
|
procedure TStString.InsertLineTerminatorAtCursor;
|
789 |
|
|
{- Inserts line termintor at cursor position. }
|
790 |
|
|
var
|
791 |
|
|
Pos : Cardinal;
|
792 |
|
|
Terminator : PAnsiChar;
|
793 |
|
|
TermSiz : Integer;
|
794 |
|
|
begin
|
795 |
|
|
Terminator := nil;
|
796 |
|
|
TermSiz := MakeTerminator(Terminator);
|
797 |
|
|
CheckAlloc(GetLength + 2);
|
798 |
|
|
Pos := FCursor - FString;
|
799 |
|
|
StrStInsertPrimZ(FString, Terminator, Pos);
|
800 |
|
|
FreeMem(Terminator, TermSiz);
|
801 |
|
|
end;
|
802 |
|
|
|
803 |
|
|
procedure TStString.InsertLineTerminator(Pos : Cardinal);
|
804 |
|
|
{- Inserts line terminator at given position. }
|
805 |
|
|
var
|
806 |
|
|
AdjPos : Cardinal;
|
807 |
|
|
Terminator : PAnsiChar;
|
808 |
|
|
TermSiz : Integer;
|
809 |
|
|
begin
|
810 |
|
|
Terminator := nil;
|
811 |
|
|
TermSiz := MakeTerminator(Terminator);
|
812 |
|
|
CheckAlloc(GetLength + 2);
|
813 |
|
|
AdjPos := Pos;
|
814 |
|
|
if FOneBased then Dec(AdjPos);
|
815 |
|
|
StrStInsertPrimZ(FString, Terminator, AdjPos);
|
816 |
|
|
FreeMem(Terminator, TermSiz);
|
817 |
|
|
end;
|
818 |
|
|
|
819 |
|
|
|
820 |
|
|
procedure TStString.InsertPCharAtCursor(S : PAnsiChar);
|
821 |
|
|
{- Inserts null-terminated string at cursor position. }
|
822 |
|
|
var
|
823 |
|
|
Len, Pos : Cardinal;
|
824 |
|
|
begin
|
825 |
|
|
Len := StrLen(S);
|
826 |
|
|
Pos := FCursor - FString;
|
827 |
|
|
CheckAlloc(GetLength + Len);
|
828 |
|
|
StrStInsertPrimZ(FString, S, Pos);
|
829 |
|
|
end;
|
830 |
|
|
|
831 |
|
|
procedure TStString.InsertStringAtCursor(S : AnsiString);
|
832 |
|
|
{- Inserts string at cursor position. }
|
833 |
|
|
var
|
834 |
|
|
Pos, Len : Cardinal;
|
835 |
|
|
Temp : PAnsiChar;
|
836 |
|
|
begin
|
837 |
|
|
Pos := FCursor - FString;
|
838 |
|
|
Len := System.Length(S);
|
839 |
|
|
Temp := AnsiStrAlloc(Succ(Len));
|
840 |
|
|
try
|
841 |
|
|
StrPCopy(Temp, S);
|
842 |
|
|
CheckAlloc(GetLength + Len);
|
843 |
|
|
StrStInsertPrimZ(FString, Temp, Pos);
|
844 |
|
|
finally
|
845 |
|
|
StrDispose(Temp);
|
846 |
|
|
end;
|
847 |
|
|
end;
|
848 |
|
|
|
849 |
|
|
procedure TStString.ItemsToString;
|
850 |
|
|
{- Copies items strings to string. }
|
851 |
|
|
var
|
852 |
|
|
Temp : AnsiString;
|
853 |
|
|
begin
|
854 |
|
|
Temp := FItems.Text;
|
855 |
|
|
SetAsPChar(PAnsiChar(AnsiString(Temp)));
|
856 |
|
|
end;
|
857 |
|
|
|
858 |
|
|
procedure TStString.LeftPad(Size : Cardinal);
|
859 |
|
|
{- Left pad string. }
|
860 |
|
|
begin
|
861 |
|
|
CheckAlloc(Size);
|
862 |
|
|
LeftPadPrimZ(FString, Size);
|
863 |
|
|
ResetCursor;
|
864 |
|
|
end;
|
865 |
|
|
|
866 |
|
|
procedure TStString.LeftPadCh(const C : AnsiChar; Size : Cardinal);
|
867 |
|
|
{- Left pad string with C. }
|
868 |
|
|
begin
|
869 |
|
|
CheckAlloc(Size);
|
870 |
|
|
LeftPadChPrimZ(FString, C, Size);
|
871 |
|
|
ResetCursor;
|
872 |
|
|
end;
|
873 |
|
|
|
874 |
|
|
procedure TStString.PadCh(const C : AnsiChar; Size : Cardinal);
|
875 |
|
|
{- Pad string with C. }
|
876 |
|
|
begin
|
877 |
|
|
CheckAlloc(Size);
|
878 |
|
|
PadChPrimZ(FString, C, Size);
|
879 |
|
|
ResetCursor;
|
880 |
|
|
end;
|
881 |
|
|
|
882 |
|
|
procedure TStString.ResetCursor;
|
883 |
|
|
{- Resets Cursor to beginning of string. }
|
884 |
|
|
begin
|
885 |
|
|
FCursor := FString;
|
886 |
|
|
end;
|
887 |
|
|
|
888 |
|
|
procedure TStString.Scramble(const Key : AnsiString);
|
889 |
|
|
{- Encrypts / Decrypts string. }
|
890 |
|
|
var
|
891 |
|
|
Temp : PAnsiChar;
|
892 |
|
|
begin
|
893 |
|
|
Temp := AnsiStrAlloc(Succ(System.Length(Key)));
|
894 |
|
|
try
|
895 |
|
|
StrPCopy(Temp, Key);
|
896 |
|
|
ScramblePrimZ(FString, Temp);
|
897 |
|
|
finally
|
898 |
|
|
StrDispose(Temp);
|
899 |
|
|
end;
|
900 |
|
|
end;
|
901 |
|
|
|
902 |
|
|
procedure TStString.SetAsPChar(S : PAnsiChar);
|
903 |
|
|
{- Sets string to PChar. }
|
904 |
|
|
begin
|
905 |
|
|
CheckAlloc(StrLen(S));
|
906 |
|
|
StrCopy(FString, S);
|
907 |
|
|
ResetCursor;
|
908 |
|
|
end;
|
909 |
|
|
|
910 |
|
|
function TStString.SizeAsciiAtCursor(InclTrailers : Boolean) : Cardinal;
|
911 |
|
|
{- Get the size of the word that the Cursor on (follows ASCII rules). }
|
912 |
|
|
var
|
913 |
|
|
TempPtr : PAnsiChar;
|
914 |
|
|
Ch : AnsiChar;
|
915 |
|
|
InQuote : Boolean;
|
916 |
|
|
begin
|
917 |
|
|
InQuote := False;
|
918 |
|
|
TempPtr := FCursor;
|
919 |
|
|
Ch := TempPtr^;
|
920 |
|
|
while (Ch <> #0) and ((InQuote) or (not CharExistsZ(FDelimiters, Ch))) do begin
|
921 |
|
|
if Ch = FQuote then
|
922 |
|
|
InQuote := not InQuote;
|
923 |
|
|
Inc(TempPtr);
|
924 |
|
|
Ch := TempPtr^;
|
925 |
|
|
end;
|
926 |
|
|
if InclTrailers then begin
|
927 |
|
|
while (Ch <> #0) and CharExistsZ(FDelimiters, Ch) do begin
|
928 |
|
|
Inc(TempPtr);
|
929 |
|
|
Ch := TempPtr^;
|
930 |
|
|
end;
|
931 |
|
|
end;
|
932 |
|
|
Result := TempPtr - FCursor;
|
933 |
|
|
end;
|
934 |
|
|
|
935 |
|
|
function TStString.SizeWordAtCursor(InclTrailers : Boolean) : Cardinal;
|
936 |
|
|
{- Get the size of the word that the Cursor is pointing to. }
|
937 |
|
|
var
|
938 |
|
|
TempPtr : PAnsiChar;
|
939 |
|
|
Ch : AnsiChar;
|
940 |
|
|
begin
|
941 |
|
|
TempPtr := FCursor;
|
942 |
|
|
Ch := TempPtr^;
|
943 |
|
|
while (Ch <> #0) and (not CharExistsZ(FDelimiters, Ch)) do begin
|
944 |
|
|
Inc(TempPtr);
|
945 |
|
|
Ch := TempPtr^;
|
946 |
|
|
end;
|
947 |
|
|
if InclTrailers then begin
|
948 |
|
|
while (Ch <> #0) and CharExistsZ(FDelimiters, Ch) do begin
|
949 |
|
|
Inc(TempPtr);
|
950 |
|
|
Ch := TempPtr^;
|
951 |
|
|
end;
|
952 |
|
|
end;
|
953 |
|
|
Result := TempPtr - FCursor;
|
954 |
|
|
end;
|
955 |
|
|
|
956 |
|
|
procedure TStString.StrChDelete(Pos : Cardinal);
|
957 |
|
|
{- Delete character at Pos. }
|
958 |
|
|
var
|
959 |
|
|
AdjPos : Cardinal;
|
960 |
|
|
begin
|
961 |
|
|
AdjPos := Pos;
|
962 |
|
|
if FOneBased then Dec(AdjPos);
|
963 |
|
|
StrChDeletePrimZ(FString, AdjPos);
|
964 |
|
|
FixCursor(AdjPos, 1, True);
|
965 |
|
|
end;
|
966 |
|
|
|
967 |
|
|
procedure TStString.StrChInsert(const C : AnsiChar; Pos : Cardinal);
|
968 |
|
|
{- Insert character at Pos. }
|
969 |
|
|
var
|
970 |
|
|
AdjPos : Cardinal;
|
971 |
|
|
begin
|
972 |
|
|
AdjPos := Pos;
|
973 |
|
|
CheckAlloc(Succ(GetLength));
|
974 |
|
|
if FOneBased then Dec(AdjPos);
|
975 |
|
|
StrChInsertPrimZ(FString, C, AdjPos);
|
976 |
|
|
FixCursor(AdjPos, 1, False);
|
977 |
|
|
end;
|
978 |
|
|
|
979 |
|
|
function TStString.StrChPos(const C : AnsiChar; var Pos : Cardinal) : Boolean;
|
980 |
|
|
{- Search string for character. }
|
981 |
|
|
var
|
982 |
|
|
I : Cardinal;
|
983 |
|
|
begin
|
984 |
|
|
Result := False;
|
985 |
|
|
ClearItems;
|
986 |
|
|
for I := 1 to FRepeatValue do begin
|
987 |
|
|
if StrChPosZ(DesiredCursor, C, Pos) then begin
|
988 |
|
|
Result := True;
|
989 |
|
|
Pos := GetRelativePos(Pos);
|
990 |
|
|
UpdateCursor(Pos);
|
991 |
|
|
if FOneBased then Inc(Pos);
|
992 |
|
|
AddIntToList(Pos);
|
993 |
|
|
Inc(FCursor);
|
994 |
|
|
end else Break;
|
995 |
|
|
end;
|
996 |
|
|
if Result then Dec(FCursor);
|
997 |
|
|
end;
|
998 |
|
|
|
999 |
|
|
|
1000 |
|
|
procedure TStString.StripLineTerminators;
|
1001 |
|
|
{- Strip all line terminators from string, replacing them with a space. }
|
1002 |
|
|
var
|
1003 |
|
|
Terminator : PAnsiChar;
|
1004 |
|
|
TermSiz : Integer;
|
1005 |
|
|
begin
|
1006 |
|
|
Terminator := nil;
|
1007 |
|
|
if self.FLineTerminator = ltCRLF then begin
|
1008 |
|
|
Filter(#13);
|
1009 |
|
|
Substitute(#10, ' ');
|
1010 |
|
|
end
|
1011 |
|
|
else begin
|
1012 |
|
|
TermSiz := MakeTerminator(Terminator);
|
1013 |
|
|
Substitute(Terminator, ' ');
|
1014 |
|
|
FreeMem(Terminator, TermSiz);
|
1015 |
|
|
end;
|
1016 |
|
|
ResetCursor;
|
1017 |
|
|
end;
|
1018 |
|
|
|
1019 |
|
|
|
1020 |
|
|
procedure TStString.StrStDelete(const Pos, Length : Cardinal);
|
1021 |
|
|
{- Delete substring from string at Pos. }
|
1022 |
|
|
var
|
1023 |
|
|
AdjPos : Cardinal;
|
1024 |
|
|
begin
|
1025 |
|
|
AdjPos := Pos;
|
1026 |
|
|
if FOneBased then Dec(AdjPos);
|
1027 |
|
|
StrStDeletePrimZ(FString, AdjPos, Length);
|
1028 |
|
|
FixCursor(AdjPos, Length, True);
|
1029 |
|
|
end;
|
1030 |
|
|
|
1031 |
|
|
procedure TStString.StrStInsert(const S : AnsiString; Pos : Cardinal);
|
1032 |
|
|
{- Insert string at Pos. }
|
1033 |
|
|
var
|
1034 |
|
|
AdjPos, Len : Cardinal;
|
1035 |
|
|
Temp : PAnsiChar;
|
1036 |
|
|
begin
|
1037 |
|
|
AdjPos := Pos;
|
1038 |
|
|
Len := System.Length(S);
|
1039 |
|
|
Temp := AnsiStrAlloc(Succ(Len));
|
1040 |
|
|
try
|
1041 |
|
|
StrPCopy(Temp, S);
|
1042 |
|
|
if FOneBased then Dec(AdjPos);
|
1043 |
|
|
CheckAlloc(GetLength + Len);
|
1044 |
|
|
StrStInsertPrimZ(FString, Temp, AdjPos);
|
1045 |
|
|
finally
|
1046 |
|
|
StrDispose(Temp);
|
1047 |
|
|
end;
|
1048 |
|
|
FixCursor(AdjPos, Len, False);
|
1049 |
|
|
end;
|
1050 |
|
|
|
1051 |
|
|
function TStString.StrStPos(const S : AnsiString; var Pos : Cardinal) : Boolean;
|
1052 |
|
|
{- Search for substring in string. }
|
1053 |
|
|
var
|
1054 |
|
|
I : Cardinal;
|
1055 |
|
|
Temp : PAnsiChar;
|
1056 |
|
|
begin
|
1057 |
|
|
Result := False;
|
1058 |
|
|
ClearItems;
|
1059 |
|
|
Temp := AnsiStrAlloc(Succ(System.Length(S)));
|
1060 |
|
|
try
|
1061 |
|
|
StrPCopy(Temp, S);
|
1062 |
|
|
for I := 1 to FRepeatValue do begin
|
1063 |
|
|
if StrStPosZ(DesiredCursor, Temp, Pos) then begin
|
1064 |
|
|
Result := True;
|
1065 |
|
|
Pos := GetRelativePos(Pos);
|
1066 |
|
|
UpdateCursor(Pos);
|
1067 |
|
|
if FOneBased then inc(Pos);
|
1068 |
|
|
AddIntToList(Pos);
|
1069 |
|
|
Inc(FCursor);
|
1070 |
|
|
end else Break;
|
1071 |
|
|
end;
|
1072 |
|
|
if Result then Dec(FCursor);
|
1073 |
|
|
finally
|
1074 |
|
|
StrDispose(Temp);
|
1075 |
|
|
end;
|
1076 |
|
|
end;
|
1077 |
|
|
|
1078 |
|
|
procedure TStString.Substitute(FromStr, ToStr : PAnsiChar);
|
1079 |
|
|
{- Substitute characters in string. }
|
1080 |
|
|
var
|
1081 |
|
|
CursorDelta : Cardinal;
|
1082 |
|
|
begin
|
1083 |
|
|
AllocTemp(FAlloc);
|
1084 |
|
|
CursorDelta := FCursor - FString;
|
1085 |
|
|
if Assigned(FTemp) then begin
|
1086 |
|
|
SubstituteZ(FTemp, FString, FromStr, ToStr);
|
1087 |
|
|
TempToString;
|
1088 |
|
|
end;
|
1089 |
|
|
FCursor := FString + CursorDelta;
|
1090 |
|
|
end;
|
1091 |
|
|
|
1092 |
|
|
procedure TStString.Trim;
|
1093 |
|
|
{- Trim string. }
|
1094 |
|
|
begin
|
1095 |
|
|
TrimPrimZ(FString);
|
1096 |
|
|
ResetCursor;
|
1097 |
|
|
end;
|
1098 |
|
|
|
1099 |
|
|
procedure TStString.TrimLead;
|
1100 |
|
|
{- Trim leading whitespace from string. }
|
1101 |
|
|
begin
|
1102 |
|
|
TrimLeadPrimZ(FString);
|
1103 |
|
|
ResetCursor;
|
1104 |
|
|
end;
|
1105 |
|
|
|
1106 |
|
|
procedure TStString.TrimSpaces;
|
1107 |
|
|
{- Trim spaces from string. }
|
1108 |
|
|
begin
|
1109 |
|
|
TrimSpacesPrimZ(FString);
|
1110 |
|
|
ResetCursor;
|
1111 |
|
|
end;
|
1112 |
|
|
|
1113 |
|
|
procedure TStString.TrimTrail;
|
1114 |
|
|
{- Trim trailing whitespace from string. }
|
1115 |
|
|
begin
|
1116 |
|
|
TrimTrailPrimZ(FString);
|
1117 |
|
|
ResetCursor;
|
1118 |
|
|
end;
|
1119 |
|
|
|
1120 |
|
|
function TStString.WordPosition(N : Cardinal; var Pos : Cardinal) : Boolean;
|
1121 |
|
|
{- Return the position of the N'th word. }
|
1122 |
|
|
var
|
1123 |
|
|
I, Temp, Num : Cardinal;
|
1124 |
|
|
begin
|
1125 |
|
|
Result := False;
|
1126 |
|
|
Num := N;
|
1127 |
|
|
ClearItems;
|
1128 |
|
|
for I := 1 to FRepeatValue do begin
|
1129 |
|
|
if WordPositionZ(Num, DesiredCursor, FDelimiters, Temp) then begin
|
1130 |
|
|
if Result = False then Inc(Num);
|
1131 |
|
|
Pos := GetRelativePos(Temp);
|
1132 |
|
|
Result := True;
|
1133 |
|
|
UpdateCursor(Pos);
|
1134 |
|
|
if FOneBased then Inc(Pos);
|
1135 |
|
|
AddIntToList(Pos);
|
1136 |
|
|
end else
|
1137 |
|
|
Break;
|
1138 |
|
|
end;
|
1139 |
|
|
if FResetRepeat then FRepeatValue := DefRepeatValue;
|
1140 |
|
|
end;
|
1141 |
|
|
|
1142 |
|
|
|
1143 |
|
|
procedure TStString.WrapToItems;
|
1144 |
|
|
{- Copy string to items with word wrap. }
|
1145 |
|
|
var
|
1146 |
|
|
I, J : Cardinal;
|
1147 |
|
|
Anchor, Cur, EndTemp : PAnsiChar;
|
1148 |
|
|
InWord, EndFound : Boolean;
|
1149 |
|
|
|
1150 |
|
|
Terminator, TermPlusSpace : PAnsiChar;
|
1151 |
|
|
TermSiz : Integer;
|
1152 |
|
|
begin
|
1153 |
|
|
Terminator := nil;
|
1154 |
|
|
TermSiz := MakeTerminator(Terminator);
|
1155 |
|
|
GetMem(TermPlusSpace, TermSiz + 1);
|
1156 |
|
|
StrCopy(TermPlusSpace, Terminator);
|
1157 |
|
|
StrCat(TermPlusSpace, ' ');
|
1158 |
|
|
|
1159 |
|
|
if GetLength > FWrap then begin
|
1160 |
|
|
EndFound := False;
|
1161 |
|
|
AllocTemp(SuggestSize(GetLength + (GetLength div FWrap * 2)));
|
1162 |
|
|
FTemp^ := #0;
|
1163 |
|
|
Anchor := FString;
|
1164 |
|
|
Cur := FString;
|
1165 |
|
|
repeat
|
1166 |
|
|
I := 0;
|
1167 |
|
|
J := 0;
|
1168 |
|
|
InWord := False;
|
1169 |
|
|
while (Cur^ <> #0) and (I < Succ(FWrap)) do begin
|
1170 |
|
|
// if CharExistsZ(' '#13#10, Cur^) then begin
|
1171 |
|
|
if CharExistsZ(TermPlusSpace, Cur^) then begin
|
1172 |
|
|
if InWord then begin
|
1173 |
|
|
InWord := False;
|
1174 |
|
|
J := I;
|
1175 |
|
|
end;
|
1176 |
|
|
if Cur^ <> ' ' then Break;
|
1177 |
|
|
end else begin
|
1178 |
|
|
InWord := True;
|
1179 |
|
|
end;
|
1180 |
|
|
Inc(I);
|
1181 |
|
|
Inc(Cur);
|
1182 |
|
|
end;
|
1183 |
|
|
if Cur^ = #0 then begin
|
1184 |
|
|
EndFound := True;
|
1185 |
|
|
J := I;
|
1186 |
|
|
end;
|
1187 |
|
|
EndTemp := StrEnd(FTemp);
|
1188 |
|
|
if InWord and (J = 0) then
|
1189 |
|
|
J := FWrap;
|
1190 |
|
|
StrLCopy(EndTemp, Anchor, J);
|
1191 |
|
|
if not EndFound then begin
|
1192 |
|
|
// StrCat(FTemp, #13#10);
|
1193 |
|
|
StrCat(FTemp, Terminator);
|
1194 |
|
|
Anchor := Anchor + J;
|
1195 |
|
|
while Anchor^ = ' ' do
|
1196 |
|
|
Inc(Anchor);
|
1197 |
|
|
if FLineTerminator = ltCRLF then begin
|
1198 |
|
|
if Anchor^ = #13 then Inc(Anchor);
|
1199 |
|
|
if Anchor^ = #10 then Inc(Anchor);
|
1200 |
|
|
end else begin
|
1201 |
|
|
if Anchor^ = Terminator[0] then Inc(Anchor);
|
1202 |
|
|
end;
|
1203 |
|
|
Cur := Anchor;
|
1204 |
|
|
end;
|
1205 |
|
|
until EndFound;
|
1206 |
|
|
FItems.Text := FTemp;
|
1207 |
|
|
StrDispose(FTemp);
|
1208 |
|
|
end else begin
|
1209 |
|
|
StringToItems;
|
1210 |
|
|
end;
|
1211 |
|
|
FreeMem(Terminator, TermSiz);
|
1212 |
|
|
FreeMem(TermPlusSpace, TermSiz + 1);
|
1213 |
|
|
end;
|
1214 |
|
|
|
1215 |
|
|
|
1216 |
|
|
function TStString.DesiredCursor : PAnsiChar;
|
1217 |
|
|
{- Returns FString or FCursor. }
|
1218 |
|
|
begin
|
1219 |
|
|
if FEnableCursor then
|
1220 |
|
|
Result := FCursor
|
1221 |
|
|
else
|
1222 |
|
|
Result := FString;
|
1223 |
|
|
end;
|
1224 |
|
|
|
1225 |
|
|
function TStString.Get(Index : Cardinal) : AnsiChar;
|
1226 |
|
|
{- Get character from position Index within string. }
|
1227 |
|
|
begin
|
1228 |
|
|
if FOneBased then begin
|
1229 |
|
|
if (Index = 0) or (Index > GetLength) then
|
1230 |
|
|
RaiseStError(EStStringError, stscOutOfBounds);
|
1231 |
|
|
Result := FString[Index - 1]
|
1232 |
|
|
end else begin
|
1233 |
|
|
if Index > (GetLength-1) then
|
1234 |
|
|
RaiseStError(EStStringError, stscOutOfBounds);
|
1235 |
|
|
Result := FString[Index];
|
1236 |
|
|
end;
|
1237 |
|
|
end;
|
1238 |
|
|
|
1239 |
|
|
function TStString.GetAsciiCount : Cardinal;
|
1240 |
|
|
{- Count words following ASCII rules. }
|
1241 |
|
|
begin
|
1242 |
|
|
Result := AsciiCountZ(FString, FDelimiters, FQuote);
|
1243 |
|
|
end;
|
1244 |
|
|
|
1245 |
|
|
function TStString.GetAsShortStr : ShortString;
|
1246 |
|
|
{- Provide short string output. }
|
1247 |
|
|
begin
|
1248 |
|
|
Result := StrPas(FString);
|
1249 |
|
|
end;
|
1250 |
|
|
|
1251 |
|
|
function TStString.GetCursorPos : Cardinal;
|
1252 |
|
|
{- Return the position of the Cursor relative to the beginning of the string. }
|
1253 |
|
|
begin
|
1254 |
|
|
Result := FCursor - FString;
|
1255 |
|
|
if FOneBased then Inc(Result);
|
1256 |
|
|
end;
|
1257 |
|
|
|
1258 |
|
|
function TStString.GetDelimiters : AnsiString;
|
1259 |
|
|
{- Return string with current delimiters. }
|
1260 |
|
|
begin
|
1261 |
|
|
Result := StrPas(FDelimiters);
|
1262 |
|
|
end;
|
1263 |
|
|
|
1264 |
|
|
function TStString.GetLength : Cardinal;
|
1265 |
|
|
{- Return the length of the string. }
|
1266 |
|
|
begin
|
1267 |
|
|
if Assigned(FString) then
|
1268 |
|
|
Result := StrLen(FString)
|
1269 |
|
|
else
|
1270 |
|
|
Result := 0;
|
1271 |
|
|
end;
|
1272 |
|
|
|
1273 |
|
|
function TStString.GetRelativePos(Pos : Cardinal) : Cardinal;
|
1274 |
|
|
{- Return position relative to FString. }
|
1275 |
|
|
begin
|
1276 |
|
|
if FEnableCursor then
|
1277 |
|
|
Result := Pos + FCursor - FString
|
1278 |
|
|
else
|
1279 |
|
|
Result := Pos;
|
1280 |
|
|
end;
|
1281 |
|
|
|
1282 |
|
|
function TStString.GetSoundex : AnsiString;
|
1283 |
|
|
{- Return Soundex for word at Cursor. }
|
1284 |
|
|
var
|
1285 |
|
|
I : Integer;
|
1286 |
|
|
Temp, Dest : PAnsiChar;
|
1287 |
|
|
begin
|
1288 |
|
|
ClearItems;
|
1289 |
|
|
Dest := AnsiStrAlloc(5);
|
1290 |
|
|
try
|
1291 |
|
|
for I := 1 to FRepeatValue do begin
|
1292 |
|
|
if FCursor^ = #0 then Exit;
|
1293 |
|
|
Temp := AnsiStrAlloc(Succ(SizeWordAtCursor(False)));
|
1294 |
|
|
try
|
1295 |
|
|
GetWordAtCursorZ(Temp);
|
1296 |
|
|
Result := StrPas(SoundexZ(Dest, Temp));
|
1297 |
|
|
FItems.Add(Result);
|
1298 |
|
|
finally
|
1299 |
|
|
StrDispose(Temp);
|
1300 |
|
|
end;
|
1301 |
|
|
if FRepeatValue > 1 then CursorNextWordPrim;
|
1302 |
|
|
end;
|
1303 |
|
|
finally
|
1304 |
|
|
StrDispose(Dest);
|
1305 |
|
|
end;
|
1306 |
|
|
end;
|
1307 |
|
|
|
1308 |
|
|
function TStString.GetWordCount : Cardinal;
|
1309 |
|
|
{- Count words in string. }
|
1310 |
|
|
begin
|
1311 |
|
|
Result := WordCountZ(FString, FDelimiters);
|
1312 |
|
|
end;
|
1313 |
|
|
|
1314 |
|
|
procedure TStString.Put(Index : Cardinal; Item : AnsiChar);
|
1315 |
|
|
{- Put character at position Index within string. }
|
1316 |
|
|
begin
|
1317 |
|
|
if FOneBased then begin
|
1318 |
|
|
if (Index = 0) or (Index > GetLength) then
|
1319 |
|
|
RaiseStError(EStStringError, stscOutOfBounds);
|
1320 |
|
|
FString[Index - 1] := Item;
|
1321 |
|
|
end else begin
|
1322 |
|
|
if Index > (GetLength-1) then
|
1323 |
|
|
RaiseStError(EStStringError, stscOutOfBounds);
|
1324 |
|
|
FString[Index] := Item;
|
1325 |
|
|
end;
|
1326 |
|
|
end;
|
1327 |
|
|
|
1328 |
|
|
procedure TStString.SetAllocLength(Value : Cardinal);
|
1329 |
|
|
{- Sets allocated length for string - including the terminating null. }
|
1330 |
|
|
begin
|
1331 |
|
|
if Value <> FAlloc then begin
|
1332 |
|
|
AllocTemp(SuggestSize(Value));
|
1333 |
|
|
if Assigned(FTemp) then begin
|
1334 |
|
|
if Assigned(FString) then begin
|
1335 |
|
|
StrLCopy(FTemp, FString, Value);
|
1336 |
|
|
end;
|
1337 |
|
|
TempToString;
|
1338 |
|
|
end;
|
1339 |
|
|
end;
|
1340 |
|
|
end;
|
1341 |
|
|
|
1342 |
|
|
procedure TStString.SetAsShortStr(Value : ShortString);
|
1343 |
|
|
{- Copy short string into string object. }
|
1344 |
|
|
begin
|
1345 |
|
|
CheckAlloc(Byte(Value[0]));
|
1346 |
|
|
StrPCopy(FString, Value);
|
1347 |
|
|
ResetCursor;
|
1348 |
|
|
end;
|
1349 |
|
|
|
1350 |
|
|
procedure TStString.SetCursorPos(Value : Cardinal);
|
1351 |
|
|
{- Sets the position of the cursor. }
|
1352 |
|
|
begin
|
1353 |
|
|
FCursor := FString + Value;
|
1354 |
|
|
if FOneBased then Dec(FCursor);
|
1355 |
|
|
end;
|
1356 |
|
|
|
1357 |
|
|
procedure TStString.SetDelimiters(Value : AnsiString);
|
1358 |
|
|
{- Set the delimiters. }
|
1359 |
|
|
begin
|
1360 |
|
|
StrDispose(FDelimiters);
|
1361 |
|
|
FDelimiters := AnsiStrAlloc(Succ(System.Length(Value)));
|
1362 |
|
|
if Assigned(FDelimiters) then
|
1363 |
|
|
StrPCopy(FDelimiters, Value);
|
1364 |
|
|
end;
|
1365 |
|
|
|
1366 |
|
|
procedure TStString.SetItems(Value: TStringList);
|
1367 |
|
|
{- Sets Items. }
|
1368 |
|
|
begin
|
1369 |
|
|
FItems.Assign(Value);
|
1370 |
|
|
end;
|
1371 |
|
|
|
1372 |
|
|
procedure TStString.StringToItems;
|
1373 |
|
|
{- Copies string into items -- respects line terminators. }
|
1374 |
|
|
begin
|
1375 |
|
|
FItems.Text := FString;
|
1376 |
|
|
end;
|
1377 |
|
|
|
1378 |
|
|
function TStString.SuggestSize(Size : Cardinal) : Cardinal;
|
1379 |
|
|
{- Internal method -- returns recommended size for allocation. }
|
1380 |
|
|
var
|
1381 |
|
|
AdjSize, Delta : Cardinal;
|
1382 |
|
|
begin
|
1383 |
|
|
AdjSize := Succ(Size);
|
1384 |
|
|
Delta := AdjSize mod DefAllocSize;
|
1385 |
|
|
Result := AdjSize - Delta + DefAllocSize;
|
1386 |
|
|
end;
|
1387 |
|
|
|
1388 |
|
|
procedure TStString.TempToString;
|
1389 |
|
|
{- Internal method -- copys temp to string. }
|
1390 |
|
|
begin
|
1391 |
|
|
FAlloc := FTempAlloc;
|
1392 |
|
|
FCursor := (FCursor - FString) + FTemp;
|
1393 |
|
|
StrDispose(FString);
|
1394 |
|
|
FString := FTemp;
|
1395 |
|
|
FTemp := nil;
|
1396 |
|
|
end;
|
1397 |
|
|
|
1398 |
|
|
procedure TStString.UpdateCursor(Pos : Cardinal);
|
1399 |
|
|
{- Internal method -- updates cursor position if necessary. }
|
1400 |
|
|
begin
|
1401 |
|
|
if EnableCursor then
|
1402 |
|
|
FCursor := FString + Pos;
|
1403 |
|
|
end;
|
1404 |
|
|
|
1405 |
|
|
function TStString.GetAsLongStr : AnsiString;
|
1406 |
|
|
{- Provide output as long string. }
|
1407 |
|
|
begin
|
1408 |
|
|
Result := FString;
|
1409 |
|
|
end;
|
1410 |
|
|
|
1411 |
|
|
procedure TStString.SetAsLongStr(Value : AnsiString);
|
1412 |
|
|
{- Copy long string into string object. }
|
1413 |
|
|
begin
|
1414 |
|
|
CheckAlloc(System.Length(Value));
|
1415 |
|
|
StrCopy(FString, PAnsiChar(Value));
|
1416 |
|
|
ResetCursor;
|
1417 |
|
|
end;
|
1418 |
|
|
|
1419 |
|
|
function TStString.GetAsVariant : Variant;
|
1420 |
|
|
{- Provide output as variant. }
|
1421 |
|
|
begin
|
1422 |
|
|
Result := StrPas(FString);
|
1423 |
|
|
end;
|
1424 |
|
|
|
1425 |
|
|
procedure TStString.SetAsVariant(Value : Variant);
|
1426 |
|
|
{- Copy variant into string object. }
|
1427 |
|
|
var
|
1428 |
|
|
Temp : AnsiString;
|
1429 |
|
|
begin
|
1430 |
|
|
Temp := Value;
|
1431 |
|
|
CheckAlloc(System.Length(Temp));
|
1432 |
|
|
StrCopy(FString, PAnsiChar(Temp));
|
1433 |
|
|
ResetCursor;
|
1434 |
|
|
end;
|
1435 |
|
|
|
1436 |
|
|
|
1437 |
|
|
procedure TStString.SetLineTerm(const Value: TStLineTerminator);
|
1438 |
|
|
begin
|
1439 |
|
|
FLineTerminator := Value;
|
1440 |
|
|
end;
|
1441 |
|
|
|
1442 |
|
|
procedure TStString.SetLineTermChar(const Value: AnsiChar);
|
1443 |
|
|
begin
|
1444 |
|
|
FLineTermChar := Value;
|
1445 |
|
|
end;
|
1446 |
|
|
|
1447 |
|
|
|
1448 |
|
|
end.
|