?? jclstrings.pas
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{**************************************************************************************************}{ }{ Project JEDI Code Library (JCL) }{ }{ The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); }{ you may not use this file except in compliance with the License. You may obtain a copy of the }{ License at http://www.mozilla.org/MPL/ }{ }{ Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF }{ ANY KIND, either express or implied. See the License for the specific language governing rights }{ and limitations under the License. }{ }{ The Original Code is JclStrings.pas. }{ }{ The Initial Developer of the Original Code is documented in the accompanying }{ help file JCL.chm. Portions created by these individuals are Copyright (C) of these individuals. }{ }{**************************************************************************************************}{ }{ Various character and string routines (searching, testing and transforming) }{ }{ Unit owner: Azret Botash }{ Last modified: March 19, 2002 }{ }{**************************************************************************************************}// mvb 20 jan 2002 added StrIToStrings to interface section// mvb 20 jan 2002 added AllowEmptyString parameter to StringsToStr function// mvb 20 jan 2002 added AddStringToStrings() by Jeff// - StrIToStrings default parameter now true// - StrToStrings default parameter now true// - Rewrote StrSmartCase to fix a bug.// - Fixed a bug in StrIsAlphaNumUnderscore// - Fixed a bug in StrIsSubset// - Simplified StrLower// - Fixed a bug in StrRepeatLength// - Fixed a bug in StrLastPos// - Added function StrTrimCharsRight (Leonard Wennekers)// - Added function StrTrimCharsLeft (Leonard Wennekers)// - Added StrNormIndex function (Alexander Radchenko)// - Changed Assert in StrTokens/ to If List <> nil// - Deleted an commented out version of StrReplace. If anyone ever want to finish the old// version please go the archive version 0.39// - Modified StrFillChar a little bit (added an if for count > 0)// - StrCharPosLower (Jean-Fabien Connault)// - StrCharPosUpper (Jean-Fabien Connault)// - Changed to 100 chars per line style// - Note to Marcel: Have a look at StrToStrings and StrItoStrings. They are untested but// should work more or less equal to the BreakApart functions by JFC.// - Changed StrNPos for special case// - Changed StrIPos for special case// - Fixed a bug in CharPos : didn'T work if index = length(s)// - Fixed a bug in CharIPos : didn'T work if index = length(s)unit JclStrings;//{$I jcl.inc}interfaceuses Classes, SysUtils; //JclBase;// Character constants and setsconst// Misc. often used character definitions AnsiNull = AnsiChar(#0); AnsiSoh = AnsiChar(#1); AnsiStx = AnsiChar(#2); AnsiEtx = AnsiChar(#3); AnsiEot = AnsiChar(#4); AnsiEnq = AnsiChar(#5); AnsiAck = AnsiChar(#6); AnsiBell = AnsiChar(#7); AnsiBackspace = AnsiChar(#8); AnsiTab = AnsiChar(#9); AnsiLineFeed = AnsiChar(#10); AnsiVerticalTab = AnsiChar(#11); AnsiFormFeed = AnsiChar(#12); AnsiCarriageReturn = AnsiChar(#13); AnsiCrLf = AnsiString(#13#10); AnsiSo = AnsiChar(#14); AnsiSi = AnsiChar(#15); AnsiDle = AnsiChar(#16); AnsiDc1 = AnsiChar(#17); AnsiDc2 = AnsiChar(#18); AnsiDc3 = AnsiChar(#19); AnsiDc4 = AnsiChar(#20); AnsiNak = AnsiChar(#21); AnsiSyn = AnsiChar(#22); AnsiEtb = AnsiChar(#23); AnsiCan = AnsiChar(#24); AnsiEm = AnsiChar(#25); AnsiEndOfFile = AnsiChar(#26); AnsiEscape = AnsiChar(#27); AnsiFs = AnsiChar(#28); AnsiGs = AnsiChar(#29); AnsiRs = AnsiChar(#30); AnsiUs = AnsiChar(#31); AnsiSpace = AnsiChar(' '); AnsiComma = AnsiChar(','); AnsiBackslash = AnsiChar('\'); AnsiForwardSlash = AnsiChar('/'); AnsiDoubleQuote = AnsiChar('"'); AnsiSingleQuote = AnsiChar(''''); {$IFDEF MSWINDOWS} AnsiLineBreak = AnsiCrLf; {$ENDIF}// Misc. character sets AnsiSigns = ['-', '+']; AnsiWhiteSpace = [AnsiTab, AnsiLineFeed, AnsiVerticalTab, AnsiFormFeed, AnsiCarriageReturn, AnsiSpace]; AnsiDecDigits = ['0'..'9']; AnsiOctDigits = ['0'..'7']; AnsiHexDigits = ['0'..'9', 'A'..'F', 'a'..'f'];{$IFDEF MSWINDOWS}const // CharType return values C1_UPPER = $0001; // Uppercase C1_LOWER = $0002; // Lowercase C1_DIGIT = $0004; // Decimal digits C1_SPACE = $0008; // Space characters C1_PUNCT = $0010; // Punctuation C1_CNTRL = $0020; // Control characters C1_BLANK = $0040; // Blank characters C1_XDIGIT = $0080; // Hexadecimal digits C1_ALPHA = $0100; // Any linguistic character: alphabetic, syllabary, or ideographic{$IFDEF SUPPORTS_EXTSYM} {$EXTERNALSYM C1_UPPER} {$EXTERNALSYM C1_LOWER} {$EXTERNALSYM C1_DIGIT} {$EXTERNALSYM C1_SPACE} {$EXTERNALSYM C1_PUNCT} {$EXTERNALSYM C1_CNTRL} {$EXTERNALSYM C1_BLANK} {$EXTERNALSYM C1_XDIGIT} {$EXTERNALSYM C1_ALPHA}{$ENDIF}{$ENDIF}//--------------------------------------------------------------------------------------------------// String Test Routines//--------------------------------------------------------------------------------------------------function StrIsAlpha(const S: AnsiString): Boolean;function StrIsAlphaNum(const S: AnsiString): Boolean;function StrIsAlphaNumUnderscore(const S: AnsiString): Boolean;function StrContainsChars(const S: AnsiString; Chars: TSysCharSet; CheckAll: Boolean): Boolean;function StrIsDigit(const S: AnsiString): Boolean;function StrIsNumber(const S: AnsiString): Boolean;function StrIsSubset(const S: AnsiString; const ValidChars: TSysCharSet): Boolean;function StrSame(const S1, S2: AnsiString): Boolean;//--------------------------------------------------------------------------------------------------// String Transformation Routines//--------------------------------------------------------------------------------------------------function StrCenter(const S: AnsiString; L: Integer; C: AnsiChar = ' '): AnsiString;function StrCharPosLower(const S: AnsiString; CharPos: Integer): AnsiString;function StrCharPosUpper(const S: AnsiString; CharPos: Integer): AnsiString;function StrDoubleQuote(const S: AnsiString): AnsiString;function StrEnsurePrefix(const Prefix, Text: AnsiString): AnsiString;function StrEnsureSuffix(const Suffix, Text: AnsiString): AnsiString;function StrEscapedToString(const S: AnsiString): AnsiString;function StrLower(const S: AnsiString): AnsiString;procedure StrLowerInPlace(var S: AnsiString);procedure StrLowerBuff(S: PAnsiChar);procedure StrMove(var Dest: AnsiString; const Source: AnsiString; const ToIndex, FromIndex, Count: Integer);function StrPadLeft(const S: AnsiString; Len: Integer; C: AnsiChar = AnsiSpace ): AnsiString;function StrPadRight(const S: AnsiString; Len: Integer; C: AnsiChar = AnsiSpace ): AnsiString;function StrProper(const S: AnsiString): AnsiString;procedure StrProperBuff(S: PAnsiChar);function StrQuote(const S: AnsiString; C: AnsiChar): AnsiString;function StrRemoveChars(const S: AnsiString; const Chars: TSysCharSet): AnsiString;function StrKeepChars(const S: AnsiString; const Chars: TSysCharSet): AnsiString;procedure StrReplace(var S: AnsiString; const Search, Replace: AnsiString; Flags: TReplaceFlags = []);function StrReplaceChar(const S: AnsiString; const Source, Replace: Char): AnsiString;function StrReplaceChars(const S: AnsiString; const Chars: TSysCharSet; Replace: Char): AnsiString;function StrReplaceButChars(const S: AnsiString; const Chars: TSysCharSet; Replace: Char): AnsiString;function StrRepeat(const S: AnsiString; Count: Integer): AnsiString;function StrRepeatLength(const S: AnsiString; Const L: Integer): AnsiString;function StrReverse(const S: AnsiString): AnsiString;procedure StrReverseInPlace(var S: AnsiString);function StrSingleQuote(const S: AnsiString): AnsiString;function StrSmartCase(const S: AnsiString; Delimiters: TSysCharSet): AnsiString;function StrStringToEscaped(const S: AnsiString): AnsiString;function StrStripNonNumberChars(const S: AnsiString): AnsiString;function StrToHex(const Source: AnsiString): AnsiString;function StrTrimCharLeft(const S: AnsiString; C: AnsiChar): AnsiString;function StrTrimCharsLeft(const S: AnsiString; const Chars: TSysCharSet): AnsiString;function StrTrimCharRight(const S: AnsiString; C: AnsiChar): AnsiString;function StrTrimCharsRight(const S: AnsiString; const Chars: TSysCharSet): AnsiString;function StrTrimQuotes(const S: AnsiString): AnsiString;function StrUpper(const S: AnsiString): AnsiString;procedure StrUpperInPlace(var S: AnsiString);procedure StrUpperBuff(S: PAnsiChar);{$IFDEF WIN32}function StrOemToAnsi(const S: AnsiString): AnsiString;function StrAnsiToOem(const S: AnsiString): AnsiString;{$ENDIF WIN32}//--------------------------------------------------------------------------------------------------// String Management//--------------------------------------------------------------------------------------------------procedure StrAddRef(var S: AnsiString);function StrAllocSize(const S: AnsiString): Longint;procedure StrDecRef(var S: AnsiString);function StrLen(S: PChar): Integer;function StrLength(const S: AnsiString): Longint;function StrRefCount(const S: AnsiString): Longint;procedure StrResetLength(var S: AnsiString);//--------------------------------------------------------------------------------------------------// String Search and Replace Routines//--------------------------------------------------------------------------------------------------function StrCharCount(const S: AnsiString; C: AnsiChar): Integer;function StrCharsCount(const S: AnsiString; Chars: TSysCharSet): Integer;function StrStrCount(const S, SubS: AnsiString): Integer;function StrCompare(const S1, S2: AnsiString): Integer;function StrCompareRange(const S1, S2: AnsiString; const Index, Count: Integer): Integer;function StrFillChar(const C: AnsiChar; const Count: Integer): AnsiString;function StrFind(const Substr, S: AnsiString; const Index: Integer = 1): Integer;function StrHasPrefix(const S: AnsiString; const Prefixes: array of string): Boolean;function StrIndex(const S: AnsiString; const List: array of string): Integer;function StrILastPos(const SubStr, S: AnsiString): Integer;function StrIPos(const SubStr, S: AnsiString): Integer;function StrIsOneOf(const S: AnsiString; const List: array of AnsiString): Boolean;function StrLastPos(const SubStr, S: AnsiString): Integer;function StrMatch(const Substr, S: AnsiString; const Index: Integer = 1): Integer;function StrMatches(const Substr, S: AnsiString; const Index: Integer = 1): Boolean;function StrNIPos(const S, SubStr: AnsiString; N: Integer): Integer;function StrNPos(const S, SubStr: AnsiString; N: Integer): Integer;function StrPrefixIndex(const S: AnsiString; const Prefixes: array of string): Integer;function StrSearch(const Substr, S: AnsiString; const Index: Integer = 1): Integer;//--------------------------------------------------------------------------------------------------// String Extraction//--------------------------------------------------------------------------------------------------function StrAfter(const SubStr, S: AnsiString): AnsiString;function StrBefore(const SubStr, S: AnsiString): AnsiString;function StrBetween(const S: AnsiString; const Start, Stop: AnsiChar): AnsiString;function StrChopRight(const S: AnsiString; N: Integer): AnsiString;function StrLeft(const S: AnsiString; Count: Integer): AnsiString;function StrMid(const S: AnsiString; Start, Count: Integer): AnsiString;function StrRestOf(const S: AnsiString; N: Integer): AnsiString;function StrRight(const S: AnsiString; Count: Integer): AnsiString;//--------------------------------------------------------------------------------------------------// Character Test Routines//--------------------------------------------------------------------------------------------------function CharEqualNoCase(const C1, C2: AnsiChar): Boolean;function CharIsAlpha(const C: AnsiChar): Boolean;function CharIsAlphaNum(const C: AnsiChar): Boolean;function CharIsBlank(const C: AnsiChar): Boolean;function CharIsControl(const C: AnsiChar): Boolean;function CharIsDelete(const C: AnsiChar): Boolean;function CharIsDigit(const C: AnsiChar): Boolean;function CharIsLower(const C: AnsiChar): Boolean;function CharIsNumber(const C: AnsiChar): Boolean;function CharIsPrintable(const C: AnsiChar): Boolean;function CharIsPunctuation(const C: AnsiChar): Boolean;function CharIsReturn(const C: AnsiChar): Boolean;function CharIsSpace(const C: AnsiChar): Boolean;function CharIsUpper(const C: AnsiChar): Boolean;function CharIsWhiteSpace(const C: AnsiChar): Boolean;function CharType(const C: AnsiChar): Word;//--------------------------------------------------------------------------------------------------// Character Transformation Routines//--------------------------------------------------------------------------------------------------function CharHex(const C: AnsiChar): Byte;function CharLower(const C: AnsiChar): AnsiChar;function CharUpper(const C: AnsiChar): AnsiChar;function CharToggleCase(const C: AnsiChar): AnsiChar;//--------------------------------------------------------------------------------------------------// Character Search and Replace//--------------------------------------------------------------------------------------------------function CharPos(const S: AnsiString; const C: AnsiChar; const Index: Integer = 1): Integer;function CharIPos(const S: AnsiString; const C: AnsiChar; const Index: Integer = 1 ): Integer;function CharReplace(var S: AnsiString; const Search, Replace: AnsiChar): Integer;//--------------------------------------------------------------------------------------------------// PCharVector//--------------------------------------------------------------------------------------------------type PCharVector = ^PChar;function StringsToPCharVector(var Dest: PCharVector; const Source: TStrings): PCharVector;function PCharVectorCount(const Source: PCharVector): Integer;procedure PCharVectorToStrings(const Dest: TStrings; const Source: PCharVector);procedure FreePCharVector(var Dest: PCharVector);//--------------------------------------------------------------------------------------------------// MultiSz Routines//--------------------------------------------------------------------------------------------------function StringsToMultiSz(var Dest: PChar; const Source: TStrings): PChar;procedure MultiSzToStrings(const Dest: TStrings; const Source: PChar);procedure FreeMultiSz(var Dest: PChar);//--------------------------------------------------------------------------------------------------// TStrings Manipulation//--------------------------------------------------------------------------------------------------procedure StrIToStrings(S, Sep: AnsiString; const List: TStrings; const AllowEmptyString: Boolean = True);procedure StrToStrings(S, Sep: AnsiString; const List: TStrings; const AllowEmptyString: Boolean = True);function StringsToStr(const List: TStrings; const Sep: AnsiString;const AllowEmptyString: Boolean = True): AnsiString;procedure TrimStrings(const List: TStrings; DeleteIfEmpty: Boolean = True );procedure TrimStringsRight(const List: TStrings; DeleteIfEmpty: Boolean = True);procedure TrimStringsLeft(const List: TStrings; DeleteIfEmpty: Boolean = True );function AddStringToStrings(const S: string; Strings: TStrings; const Unique: Boolean): Boolean;//--------------------------------------------------------------------------------------------------// Miscellaneous//--------------------------------------------------------------------------------------------------function BooleanToStr(B: Boolean): AnsiString;function FileToString(const FileName: AnsiString): AnsiString;procedure StringToFile(const FileName, Contents: AnsiString);function StrToken(var S: AnsiString; Separator: AnsiChar): AnsiString;procedure StrTokens(const S: AnsiString; const List: TStrings);procedure StrTokenToStrings(S: AnsiString; Separator: AnsiChar; const List: TStrings);function StrWord(var S: PAnsiChar; out Word: AnsiString): Boolean;function StrToIntSafe(const S: AnsiString): Integer;procedure StrNormIndex(const StrLen: integer; var Index: integer; var Count: integer); overload;{$IFNDEF DELPHI5_UP}//--------------------------------------------------------------------------------------------------// Backward compatibility//--------------------------------------------------------------------------------------------------function AnsiSameText(const S1, S2: AnsiString): Boolean;{$ENDIF DELPHI5_UP}//--------------------------------------------------------------------------------------------------// Exceptions//--------------------------------------------------------------------------------------------------implementationuses {$IFDEF WIN32} Windows; {$ENDIF WIN32} {JclLogic, JclResources;}//==================================================================================================// Internal//==================================================================================================type TAnsiStrRec = packed record AllocSize: Longint; RefCount: Longint; Length: Longint; end;const AnsiStrRecSize = SizeOf(TAnsiStrRec); // size of the AnsiString header rec AnsiCharCount = Ord(High(AnsiChar)) + 1; // # of chars in one set AnsiLoOffset = AnsiCharCount * 0; // offset to lower case chars AnsiUpOffset = AnsiCharCount * 1; // offset to upper case chars AnsiReOffset = AnsiCharCount * 2; // offset to reverse case chars AnsiAlOffset = 12; // offset to AllocSize in StrRec AnsiRfOffset = 8; // offset to RefCount in StrRec AnsiLnOffset = 4; // offset to Length in StrRec AnsiCaseMapSize = AnsiCharCount * 3; // # of chars is a tablevar AnsiCaseMap: array [0..AnsiCaseMapSize - 1] of AnsiChar; // case mappings AnsiCaseMapReady: Boolean = False; // true if case map exists AnsiCharTypes: array [AnsiChar] of Word;//--------------------------------------------------------------------------------------------------procedure LoadCharTypes;var CurrChar: AnsiChar; CurrType: Word;begin {$IFDEF MSWINDOWS} for CurrChar := Low(AnsiChar) to High(AnsiChar) do begin GetStringTypeExA(LOCALE_USER_DEFAULT, CT_CTYPE1, @CurrChar, SizeOf(AnsiChar), CurrType); AnsiCharTypes[CurrChar] := CurrType; end; {$ENDIF}end;//--------------------------------------------------------------------------------------------------procedure LoadCaseMap;var CurrChar, UpCaseChar, LoCaseChar, ReCaseChar: AnsiChar;begin {$IFDEF MSWINDOWS} if not AnsiCaseMapReady then begin for CurrChar := Low(AnsiChar) to High(AnsiChar) do begin LoCaseChar := CurrChar; UpCaseChar := CurrChar; Windows.CharLowerBuff(@LoCaseChar, 1); Windows.CharUpperBuff(@UpCaseChar, 1); if CharIsUpper(CurrChar) then ReCaseChar := LoCaseChar else if CharIsLower(CurrChar) then ReCaseChar := UpCaseChar else ReCaseChar := CurrChar; AnsiCaseMap[Ord(CurrChar) + AnsiLoOffset] := LoCaseChar; AnsiCaseMap[Ord(CurrChar) + AnsiUpOffset] := UpCaseChar; AnsiCaseMap[Ord(CurrChar) + AnsiReOffset] := ReCaseChar; end; AnsiCaseMapReady := True; end; {$ENDIF MSWINDOWS}?? 快捷鍵說明
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