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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: StStrW.pas 4.04 *}
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{*********************************************************}
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{* SysTools: Wide (Unicode) string routines *}
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{*********************************************************}
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{$I StDefine.inc}
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unit StStrW;
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interface
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uses
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Windows,
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Classes,
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SysUtils,
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StConst,
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StBase;
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{.Z+}
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type
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WStrRec = packed record
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Length : Longint;
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end;
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const
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StrOffset = SizeOf(WStrRec);
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{.Z-}
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{-------- Numeric conversion -----------}
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function HexBW(B : Byte) : WideString;
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{-Return the hex string for a byte.}
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function HexWW(W : Word) : WideString;
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{-Return the hex string for a word.}
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function HexLW(L : LongInt) : WideString;
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{-Return the hex string for a long integer.}
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function HexPtrW(P : Pointer) : WideString;
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{-Return the hex string for a pointer.}
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function BinaryBW(B : Byte) : WideString;
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{-Return a binary string for a byte.}
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function BinaryWW(W : Word) : WideString;
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{-Return the binary string for a word.}
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function BinaryLW(L : LongInt) : WideString;
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{-Return the binary string for a long integer.}
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function OctalBW(B : Byte) : WideString;
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{-Return an octal string for a byte.}
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function OctalWW(W : Word) : WideString;
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{-Return an octal string for a word.}
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function OctalLW(L : LongInt) : WideString;
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{-Return an octal string for a long integer.}
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function Str2Int16W(const S : WideString; var I : SmallInt) : Boolean;
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{-Convert a string to an SmallInt.}
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function Str2WordW(const S : WideString; var I : Word) : Boolean;
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{-Convert a string to a word.}
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function Str2LongW(const S : WideString; var I : LongInt) : Boolean;
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{-Convert a string to a long integer.}
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function Str2RealW(const S : WideString; var R : Double) : Boolean;
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{-Convert a string to a real.}
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function Str2ExtW(const S : WideString; var R : Extended) : Boolean;
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{-Convert a string to an extended.}
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function Long2StrW(L : LongInt) : WideString;
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{-Convert an integer type to a string.}
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function Real2StrW(R : Double; Width : Byte; Places : ShortInt) : WideString;
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{-Convert a real to a string.}
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function Ext2StrW(R : Extended; Width : Byte; Places : ShortInt) : WideString;
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{-Convert an extended to a string.}
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function ValPrepW(const S : WideString) : WideString;
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{-Prepares a string for calling Val.}
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{-------- General purpose string manipulation --------}
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function CharStrW(C : WideChar; Len : Cardinal) : WideString;
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{-Return a string filled with the specified character.}
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function PadChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
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{-Pad a string on the right with a specified character.}
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function PadW(const S : WideString; Len : Cardinal) : WideString;
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{-Pad a string on the right with spaces.}
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function LeftPadChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
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{-Pad a string on the left with a specified character.}
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function LeftPadW(const S : WideString; Len : Cardinal) : WideString;
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{-Pad a string on the left with spaces.}
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function TrimLeadW(const S : WideString) : WideString;
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{-Return a string with leading white space removed.}
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function TrimTrailW(const S : WideString) : WideString;
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{-Return a string with trailing white space removed.}
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function TrimW(const S : WideString) : WideString;
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{-Return a string with leading and trailing white space removed.}
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function TrimSpacesW(const S : WideString) : WideString;
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{-Return a string with leading and trailing spaces removed.}
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function CenterChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
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{-Pad a string on the left and right with a specified character.}
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function CenterW(const S : WideString; Len : Cardinal) : WideString;
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{-Pad a string on the left and right with spaces.}
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function EntabW(const S : WideString; TabSize : Byte) : WideString;
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{-Convert blanks in a string to tabs.}
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function DetabW(const S : WideString; TabSize : Byte) : WideString;
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{-Expand tabs in a string to blanks.}
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function ScrambleW(const S, Key : WideString) : WideString;
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{-Encrypt / Decrypt string with enhanced XOR encryption.}
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function SubstituteW(const S, FromStr, ToStr : WideString) : WideString;
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{-Map the characters found in FromStr to the corresponding ones in ToStr.}
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function FilterW(const S, Filters : WideString) : WideString;
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{-Remove characters from a string. The characters to remove are specified in
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ChSet.}
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{--------------- Word / Char manipulation -------------------------}
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function CharExistsW(const S : WideString; C : WideChar) : Boolean;
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{-Determine whether a given character exists in a string. }
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function CharCountW(const S : WideString; C : WideChar) : Cardinal;
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{-Count the number of a given character in a string. }
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function WordCountW(const S, WordDelims : WideString) : Cardinal;
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{-Given an array of word delimiters, return the number of words in a string.}
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function WordPositionW(N : Cardinal; const S, WordDelims : WideString;
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var Pos : Cardinal) : Boolean;
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{-Given an array of word delimiters, set Pos to the start position of the
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N'th word in a string. Result indicates success/failure.}
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function ExtractWordW(N : Cardinal; const S, WordDelims : WideString) : WideString;
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{-Given an array of word delimiters, return the N'th word in a string.}
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function AsciiCountW(const S, WordDelims : WideString; Quote : WideChar) : Cardinal;
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{-Return the number of words in a string.}
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function AsciiPositionW(N : Cardinal; const S, WordDelims : WideString;
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Quote : WideChar; var Pos : Cardinal) : Boolean;
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{-Return the position of the N'th word in a string.}
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function ExtractAsciiW(N : Cardinal; const S, WordDelims : WideString;
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Quote : WideChar) : WideString;
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{-Given an array of word delimiters, return the N'th word in a string. Any
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text within Quote characters is counted as one word.}
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procedure WordWrapW(const InSt : WideString; var OutSt, Overlap : WideString;
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Margin : Cardinal; PadToMargin : Boolean);
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{-Wrap a text string at a specified margin.}
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{--------------- String comparison and searching -----------------}
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function CompStringW(const S1, S2 : WideString) : Integer;
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{-Compare two strings.}
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function CompUCStringW(const S1, S2 : WideString) : Integer;
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{-Compare two strings. This compare is not case sensitive.}
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{--------------- DOS pathname parsing -----------------}
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function DefaultExtensionW(const Name, Ext : WideString) : WideString;
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{-Return a file name with a default extension attached.}
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function ForceExtensionW(const Name, Ext : WideString) : WideString;
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{-Force the specified extension onto the file name.}
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function JustFilenameW(const PathName : WideString) : WideString;
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{-Return just the filename and extension of a pathname.}
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function JustNameW(const PathName : WideString) : WideString;
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{-Return just the filename (no extension, path, or drive) of a pathname.}
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function JustExtensionW(const Name : WideString) : WideString;
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{-Return just the extension of a pathname.}
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function JustPathnameW(const PathName : WideString) : WideString;
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{-Return just the drive and directory portion of a pathname.}
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function AddBackSlashW(const DirName : WideString) : WideString;
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{-Add a default backslash to a directory name.}
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function CleanPathNameW(const PathName : WideString) : WideString;
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{-Return a pathname cleaned up as DOS does it.}
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function HasExtensionW(const Name : WideString; var DotPos : Cardinal) : Boolean;
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{-Determine if a pathname contains an extension and, if so, return the
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position of the dot in front of the extension.}
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{------------------ Formatting routines --------------------}
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function CommaizeW(L : LongInt) : WideString;
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{-Convert a long integer to a string with commas.}
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function CommaizeChW(L : Longint; Ch : WideChar) : WideString;
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{-Convert a long integer to a string with Ch in comma positions.}
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function FloatFormW(const Mask : WideString ; R : TstFloat ; const LtCurr,
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RtCurr : WideString ; Sep, DecPt : WideChar) : WideString;
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{-Return a formatted string with digits from R merged into mask.}
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function LongIntFormW(const Mask : WideString ; L : LongInt ; const LtCurr,
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RtCurr : WideString ; Sep : WideChar) : WideString;
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{-Return a formatted string with digits from L merged into mask.}
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function StrChPosW(const P : WideString; C : WideChar; var Pos : Cardinal) : Boolean;
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{-Return the position of a specified character within a string.}
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function StrStPosW(const P, S : WideString; var Pos : Cardinal) : Boolean;
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{-Return the position of a specified substring within a string.}
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function StrStCopyW(const S : WideString; Pos, Count : Cardinal) : WideString;
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{-Copy characters at a specified position in a string.}
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function StrChInsertW(const S : WideString; C : WideChar; Pos : Cardinal) : WideString;
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{-Insert a character into a string at a specified position.}
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function StrStInsertW(const S1, S2 : WideString; Pos : Cardinal) : WideString;
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{-Insert a string into another string at a specified position.}
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function StrChDeleteW(const S : WideString; Pos : Cardinal) : WideString;
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{-Delete the character at a specified position in a string.}
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function StrStDeleteW(const S : WideString; Pos, Count : Cardinal) : WideString;
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{-Delete characters at a specified position in a string.}
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{-------------------------- New Functions -----------------------------------}
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function ContainsOnlyW(const S, Chars : WideString;
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var BadPos : Cardinal) : Boolean;
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function ContainsOtherThanW(const S, Chars : WideString;
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var BadPos : Cardinal) : Boolean;
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function CopyFromNthWordW(const S, WordDelims : WideString;
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AWord : WideString; N : Cardinal;
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var SubString : WideString) : Boolean;
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function CopyFromToWordW(const S, WordDelims, Word1, Word2 : WideString;
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N1, N2 : Cardinal;
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var SubString : WideString) : Boolean;
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function CopyLeftW(const S : WideString; Len : Cardinal) : WideString;
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{-Return the left Len characters of a string}
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function CopyMidW(const S : WideString; First, Len : Cardinal) : WideString;
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{-Return the mid part of a string}
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function CopyRightW(const S : WideString; First : Cardinal) : WideString;
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{-Return the right Len characters of a string}
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function CopyRightAbsW(const S : WideString; NumChars : Cardinal) : WideString;
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{-Return NumChar characters starting from end}
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function CopyWithinW(const S, Delimiter : WideString;
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Strip : Boolean) : WideString;
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function DeleteFromNthWordW(const S, WordDelims : WideString;
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AWord : WideString; N : Cardinal;
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var SubString : WideString) : Boolean;
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function DeleteFromToWordW(const S, WordDelims, Word1, Word2 : WideString;
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N1, N2 : Cardinal;
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var SubString : WideString) : Boolean;
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function DeleteWithinW(const S, Delimiter : WideString) : WideString;
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function ExtractTokensW(const S, Delims : WideString;
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QuoteChar : WideChar;
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AllowNulls : Boolean;
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Tokens : TStrings) : Cardinal;
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function IsChAlphaW(C : WideChar) : Boolean;
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{-Returns true if Ch is an alpha}
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function IsChNumericW(C : WideChar; Numbers : WideString) : Boolean;
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{-Returns true if Ch in numeric set}
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function IsChAlphaNumericW(C : WideChar; Numbers : WideString) : Boolean;
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{-Returns true if Ch is an alpha or numeric}
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function IsStrAlphaW(const S : WideString) : Boolean;
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{-Returns true if all characters in string are an alpha}
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function IsStrNumericW(const S, Numbers : WideString) : Boolean;
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{-Returns true if all characters in string are in numeric set}
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function IsStrAlphaNumericW(const S, Numbers : WideString) : Boolean;
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{-Returns true if all characters in string are alpha or numeric}
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function KeepCharsW(const S, Chars : WideString) : WideString;
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function LastStringW(const S, AString : WideString;
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var Position : Cardinal) : Boolean;
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function LastWordW(const S, WordDelims, AWord : WideString;
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var Position : Cardinal) : Boolean;
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function LastWordAbsW(const S, WordDelims : WideString;
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var Position : Cardinal) : Boolean;
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function LeftTrimCharsW(const S, Chars : WideString) : WideString;
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function ReplaceWordW(const S, WordDelims, OldWord, NewWord : WideString;
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N : Cardinal;
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var Replacements : Cardinal) : WideString;
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function ReplaceWordAllW(const S, WordDelims, OldWord, NewWord : WideString;
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var Replacements : Cardinal) : WideString;
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function ReplaceStringW(const S, OldString, NewString : WideString;
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N : Cardinal;
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var Replacements : Cardinal) : WideString;
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function ReplaceStringAllW(const S, OldString, NewString : WideString;
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var Replacements : Cardinal) : WideString;
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function RepeatStringW(const RepeatString : WideString;
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var Repetitions : Cardinal;
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MaxLen : Cardinal) : WideString;
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function RightTrimCharsW(const S, Chars : WideString) : WideString;
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function StrWithinW(const S, SearchStr : WideString;
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Start : Cardinal;
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var Position : Cardinal) : boolean;
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{-finds the position of a substring within a string starting at a given point}
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function TrimCharsW(const S, Chars : WideString) : WideString;
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function WordPosW(const S, WordDelims, AWord : WideString;
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N : Cardinal; var Position : Cardinal) : Boolean;
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{-returns the Occurrence instance of a word within a string}
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implementation
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uses
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StUtils;
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{-------- Numeric conversion -----------}
|
394 |
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function HexBW(B : Byte) : WideString;
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{-Return the hex string for a byte.}
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begin
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SetLength(Result, 2);
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Result[1] := WideChar(StHexDigits[B shr 4]);
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Result[2] := WideChar(StHexDigits[B and $F]);
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end;
|
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function HexWW(W : Word) : WideString;
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{-Return the hex string for a word.}
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begin
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SetLength(Result, 4);
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Result[1] := WideChar(StHexDigits[hi(W) shr 4]);
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Result[2] := WideChar(StHexDigits[hi(W) and $F]);
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Result[3] := WideChar(StHexDigits[lo(W) shr 4]);
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Result[4] := WideChar(StHexDigits[lo(W) and $F]);
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end;
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function HexLW(L : LongInt) : WideString;
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{-Return the hex string for a long integer.}
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begin
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SetLength(Result, 8);
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Result := HexWW(HiWord(DWORD(L))) + HexWW(LoWord(DWORD(L))); {!!.02}
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end;
|
419 |
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function HexPtrW(P : Pointer) : WideString;
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{-Return the hex string for a pointer.}
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begin
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SetLength(Result, 9);
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Result := ':' + HexLW(LongInt(P));
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end;
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function BinaryBW(B : Byte) : WideString;
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{-Return a binary string for a byte.}
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var
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I, N : Word;
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begin
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N := 1;
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SetLength(Result, 8);
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for I := 7 downto 0 do begin
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Result[N] := WideChar(StHexDigits[Ord(B and (1 shl I) <> 0)]); {0 or 1}
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Inc(N);
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end;
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end;
|
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function BinaryWW(W : Word) : WideString;
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{-Return the binary string for a word.}
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var
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I, N : Word;
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begin
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N := 1;
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SetLength(Result, 16);
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for I := 15 downto 0 do begin
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Result[N] := WideChar(StHexDigits[Ord(W and (1 shl I) <> 0)]); {0 or 1}
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Inc(N);
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end;
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end;
|
452 |
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function BinaryLW(L : LongInt) : WideString;
|
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{-Return the binary string for a long integer.}
|
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var
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I : Longint;
|
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N : Byte;
|
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begin
|
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N := 1;
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SetLength(Result, 32);
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for I := 31 downto 0 do begin
|
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Result[N] := WideChar(StHexDigits[Ord(L and LongInt(1 shl I) <> 0)]); {0 or 1}
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Inc(N);
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end;
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end;
|
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function OctalBW(B : Byte) : WideString;
|
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{-Return an octal string for a byte.}
|
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var
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I : Word;
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begin
|
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SetLength(Result, 3);
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for I := 0 to 2 do begin
|
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Result[3-I] := WideChar(StHexDigits[B and 7]);
|
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B := B shr 3;
|
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end;
|
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end;
|
478 |
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function OctalWW(W : Word) : WideString;
|
480 |
{-Return an octal string for a word.}
|
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var
|
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I : Word;
|
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begin
|
484 |
SetLength(Result, 6);
|
485 |
for I := 0 to 5 do begin
|
486 |
Result[6-I] := WideChar(StHexDigits[W and 7]);
|
487 |
W := W shr 3;
|
488 |
end;
|
489 |
end;
|
490 |
|
491 |
function OctalLW(L : LongInt) : WideString;
|
492 |
{-Return an octal string for a long integer.}
|
493 |
var
|
494 |
I : Word;
|
495 |
begin
|
496 |
SetLength(Result, 12);
|
497 |
for I := 0 to 11 do begin
|
498 |
Result[12-I] := WideChar(StHexDigits[L and 7]);
|
499 |
L := L shr 3;
|
500 |
end;
|
501 |
end;
|
502 |
|
503 |
function Str2Int16W(const S : WideString; var I : SmallInt) : Boolean;
|
504 |
{-Convert a string to an SmallInt.}
|
505 |
|
506 |
var
|
507 |
ec : Integer;
|
508 |
begin
|
509 |
if (length(S) > 255) then begin
|
510 |
Result := false;
|
511 |
I := 256;
|
512 |
end
|
513 |
else begin
|
514 |
{note the automatic string conversion}
|
515 |
ValSmallint(S, I, ec);
|
516 |
if (ec = 0) then
|
517 |
Result := true
|
518 |
else begin
|
519 |
Result := false;
|
520 |
if (ec < 0) then
|
521 |
I := succ(length(S))
|
522 |
else
|
523 |
I := ec;
|
524 |
end;
|
525 |
end;
|
526 |
end;
|
527 |
|
528 |
function Str2WordW(const S : WideString; var I : Word) : Boolean;
|
529 |
{-Convert a string to a word.}
|
530 |
|
531 |
var
|
532 |
ec : Integer;
|
533 |
begin
|
534 |
if (length(S) > 255) then begin
|
535 |
Result := false;
|
536 |
I := 256;
|
537 |
end
|
538 |
else begin
|
539 |
{note the automatic string conversion}
|
540 |
ValWord(S, I, ec);
|
541 |
if (ec = 0) then
|
542 |
Result := true
|
543 |
else begin
|
544 |
Result := false;
|
545 |
if (ec < 0) then
|
546 |
I := succ(length(S))
|
547 |
else
|
548 |
I := ec;
|
549 |
end;
|
550 |
end;
|
551 |
end;
|
552 |
|
553 |
function Str2LongW(const S : WideString; var I : LongInt) : Boolean;
|
554 |
{-Convert a string to a long integer.}
|
555 |
|
556 |
var
|
557 |
ec : Integer;
|
558 |
begin
|
559 |
if (length(S) > 255) then begin
|
560 |
Result := false;
|
561 |
I := 256;
|
562 |
end
|
563 |
else begin
|
564 |
{note the automatic string conversion}
|
565 |
ValLongint(S, I, ec);
|
566 |
if (ec = 0) then
|
567 |
Result := true
|
568 |
else begin
|
569 |
Result := false;
|
570 |
if (ec < 0) then
|
571 |
I := succ(length(S))
|
572 |
else
|
573 |
I := ec;
|
574 |
end;
|
575 |
end;
|
576 |
end;
|
577 |
|
578 |
function Str2RealW(const S : WideString; var R : Double) : Boolean;
|
579 |
{-Convert a string to a real.}
|
580 |
var
|
581 |
Code : Integer;
|
582 |
St : AnsiString;
|
583 |
begin
|
584 |
Result := False;
|
585 |
if S = '' then Exit;
|
586 |
St := TrimTrailW(S);
|
587 |
if St = '' then Exit;
|
588 |
Val(ValPrepW(St), R, Code);
|
589 |
if Code <> 0 then begin
|
590 |
R := Code;
|
591 |
end else
|
592 |
Result := True;
|
593 |
end;
|
594 |
|
595 |
function Str2ExtW(const S : WideString; var R : Extended) : Boolean;
|
596 |
{-Convert a string to an extended.}
|
597 |
var
|
598 |
Code : Integer;
|
599 |
P : WideString;
|
600 |
begin
|
601 |
Result := False;
|
602 |
if S = '' then Exit;
|
603 |
P := TrimTrailW(S);
|
604 |
if P = '' then Exit;
|
605 |
Val(ValPrepW(P), R, Code);
|
606 |
if Code <> 0 then begin
|
607 |
R := Code - 1;
|
608 |
end else
|
609 |
Result := True;
|
610 |
end;
|
611 |
|
612 |
function Long2StrW(L : LongInt) : WideString;
|
613 |
{-Convert an integer type to a string.}
|
614 |
begin
|
615 |
Str(L, Result);
|
616 |
end;
|
617 |
|
618 |
function Real2StrW(R : Double; Width : Byte; Places : ShortInt) : WideString;
|
619 |
{-Convert a real to a string.}
|
620 |
begin
|
621 |
Str(R:Width:Places, Result);
|
622 |
end;
|
623 |
|
624 |
function Ext2StrW(R : Extended; Width : Byte; Places : ShortInt) : WideString;
|
625 |
{-Convert an extended to a string.}
|
626 |
begin
|
627 |
Str(R:Width:Places, Result);
|
628 |
end;
|
629 |
|
630 |
function ValPrepW(const S : WideString) : WideString;
|
631 |
{-Prepares a string for calling Val.}
|
632 |
var
|
633 |
P : Cardinal;
|
634 |
C : Longint;
|
635 |
begin
|
636 |
Result := TrimSpacesW(S);
|
637 |
if Result <> '' then begin
|
638 |
if StrChPosW(Result, WideChar({$IFDEF DELPHIXE2}FormatSettings.{$ENDIF}DecimalSeparator), P) then begin
|
639 |
C := P;
|
640 |
Result[C] := '.';
|
641 |
if C = Length(Result) then
|
642 |
SetLength(Result, Pred(C));
|
643 |
end;
|
644 |
end else
|
645 |
Result := '0';
|
646 |
end;
|
647 |
|
648 |
{-------- General purpose string manipulation --------}
|
649 |
|
650 |
function CharStrW(C : WideChar; Len : Cardinal) : WideString;
|
651 |
{-Return a string filled with the specified character.}
|
652 |
var
|
653 |
I : Longint;
|
654 |
begin
|
655 |
SetLength(Result, Len);
|
656 |
if Len <> 0 then begin
|
657 |
{FillChar does not work for widestring}
|
658 |
for I := 1 to Len do
|
659 |
Result[I] := C;
|
660 |
end;
|
661 |
end;
|
662 |
|
663 |
function PadChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
|
664 |
{-Pad a string on the right with a specified character.}
|
665 |
var
|
666 |
J,
|
667 |
R : Longint;
|
668 |
begin
|
669 |
if Length(S) >= LongInt(Len) then
|
670 |
Result := S
|
671 |
else begin
|
672 |
SetLength(Result, Len);
|
673 |
|
674 |
{ copy current contents (if any) of S to Result }
|
675 |
if (Length(S) > 0) and (Length(Result) > 0) then {!!.01}
|
676 |
Move(S[1], Result[1], Length(S)*SizeOf(WideChar)); {!!.01}
|
677 |
|
678 |
R := longint(Len) - Length(S);
|
679 |
J := Succ(Length(S));
|
680 |
while (R > 0) do begin
|
681 |
Result[J] := C;
|
682 |
Inc(J);
|
683 |
Dec(R);
|
684 |
end;
|
685 |
end;
|
686 |
end;
|
687 |
|
688 |
function PadW(const S : WideString; Len : Cardinal) : WideString;
|
689 |
{-Pad a string on the right with spaces.}
|
690 |
begin
|
691 |
Result := PadChW(S, ' ', Len);
|
692 |
end;
|
693 |
|
694 |
function LeftPadChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
|
695 |
{-Pad a string on the left with a specified character.}
|
696 |
var
|
697 |
J,
|
698 |
R : Longint;
|
699 |
begin
|
700 |
if Length(S) >= LongInt(Len) then
|
701 |
Result := S
|
702 |
else if Length(S) < MaxLongInt then begin
|
703 |
SetLength(Result, Len);
|
704 |
if (Length(S) > 0) and (Length(Result) > 0) then {!!.01}
|
705 |
Move(S[1], Result[Succ(Word(Len))-Length(S)], {!!.01}
|
706 |
Length(S)*SizeOf(WideChar)); {!!.01}
|
707 |
R := longint(Len) - Length(S);
|
708 |
J := 1;
|
709 |
while (R > 0) do begin
|
710 |
Result[J] := C;
|
711 |
Inc(J);
|
712 |
Dec(R);
|
713 |
end;
|
714 |
end;
|
715 |
end;
|
716 |
|
717 |
function LeftPadW(const S : WideString; Len : Cardinal) : WideString;
|
718 |
{-Pad a string on the left with spaces.}
|
719 |
begin
|
720 |
Result := LeftPadChW(S, ' ', Len);
|
721 |
end;
|
722 |
|
723 |
function TrimLeadW(const S : WideString) : WideString;
|
724 |
{-Return a string with leading white space removed}
|
725 |
var
|
726 |
I : Longint;
|
727 |
begin
|
728 |
I := 1;
|
729 |
while (I <= Length(S)) and (S[I] <= ' ') do
|
730 |
Inc(I);
|
731 |
SetLength(Result, Length(S)-Pred(I));
|
732 |
if Length(Result) > 0 then {!!.01}
|
733 |
Move(S[I], Result[1], Length(S)-Pred(I)*SizeOf(WideChar)); {!!.01}
|
734 |
end;
|
735 |
|
736 |
function TrimTrailW(const S : WideString) : WideString;
|
737 |
{-Return a string with trailing white space removed.}
|
738 |
var
|
739 |
L : Longint;
|
740 |
begin
|
741 |
Result := S;
|
742 |
L := Length(Result);
|
743 |
while (L > 0) and (Result[L] <= ' ') do
|
744 |
Dec(L);
|
745 |
SetLength(Result, L);
|
746 |
end;
|
747 |
|
748 |
function TrimW(const S : WideString) : WideString;
|
749 |
{-Return a string with leading and trailing white space removed.}
|
750 |
var
|
751 |
I : Longint;
|
752 |
begin
|
753 |
Result := S;
|
754 |
I := Length(Result);
|
755 |
while (I > 0) and (Result[I] <= ' ') do
|
756 |
Dec(I);
|
757 |
SetLength(Result, I);
|
758 |
|
759 |
I := 1;
|
760 |
while (I <= Length(Result)) and (Result[I] <= ' ') do
|
761 |
Inc(I);
|
762 |
Dec(I);
|
763 |
if (I > 0) then
|
764 |
System.Delete(Result, 1, I);
|
765 |
end;
|
766 |
|
767 |
function TrimSpacesW(const S : WideString) : WideString;
|
768 |
{-Return a string with leading and trailing spaces removed.}
|
769 |
var
|
770 |
I : Longint;
|
771 |
begin
|
772 |
Result := S;
|
773 |
I := Length(Result);
|
774 |
while (I > 0) and (Result[I] = ' ') do
|
775 |
Dec(I);
|
776 |
SetLength(Result, I);
|
777 |
|
778 |
I := 1;
|
779 |
while (I <= Length(Result)) and (S[I] = ' ') do
|
780 |
Inc(I);
|
781 |
Dec(I);
|
782 |
if (I > 0) then
|
783 |
System.Delete(Result, 1, I);
|
784 |
end;
|
785 |
|
786 |
function CenterChW(const S : WideString; C : WideChar; Len : Cardinal) : WideString;
|
787 |
{-Pad a string on the left and right with a specified character.}
|
788 |
begin
|
789 |
if Length(S) >= LongInt(Len) then
|
790 |
Result := S
|
791 |
else if Length(S) < MaxLongInt then begin
|
792 |
SetLength(Result, Len);
|
793 |
Result := CharStrW(C, Len);
|
794 |
if Length(S) > 0 then {!!.01}
|
795 |
Move(S[1], Result[Succ((LongInt(Len)-Length(S)) shr 1)], Length(S));
|
796 |
end;
|
797 |
end;
|
798 |
|
799 |
function CenterW(const S : WideString; Len : Cardinal) : WideString;
|
800 |
{-Pad a string on the left and right with spaces.}
|
801 |
begin
|
802 |
Result := CenterChW(S, ' ', Len);
|
803 |
end;
|
804 |
|
805 |
|
806 |
function EntabW(const S : WideString; TabSize : Byte) : WideString;
|
807 |
{-Convert blanks in a string to tabs.}
|
808 |
const
|
809 |
WSpace = WideChar(#32);
|
810 |
{$IFNDEF VERSION4}
|
811 |
WTab = string(WideChar(#9));
|
812 |
{$ELSE}
|
813 |
WTab = WideChar(#9);
|
814 |
{$ENDIF}
|
815 |
var
|
816 |
Col,
|
817 |
CP,
|
818 |
OP,
|
819 |
Spaces : Longint;
|
820 |
begin
|
821 |
if (pos(' ', S) = 0) then begin
|
822 |
Result := S;
|
823 |
Exit;
|
824 |
end;
|
825 |
Result := '';
|
826 |
Col := 1;
|
827 |
repeat
|
828 |
CP := Col;
|
829 |
while ((S[CP] <> WSpace) and (CP <= Length(S))) do
|
830 |
Inc(CP);
|
831 |
if (CP <> Col) then begin
|
832 |
OP := Length(Result) + 1;
|
833 |
SetLength(Result, Length(Result) + (CP-Col));
|
834 |
Move(S[Col], Result[OP], ((CP-Col) * SizeOf(WideChar)));
|
835 |
Col := CP;
|
836 |
end;
|
837 |
|
838 |
while (S[CP] = WSpace) do begin
|
839 |
Inc(CP);
|
840 |
if ((CP mod TabSize) = 1) then begin
|
841 |
Result := Result + WTab;
|
842 |
Col := CP;
|
843 |
end;
|
844 |
end;
|
845 |
Spaces := 0;
|
846 |
while (Col < CP) do begin
|
847 |
Inc(Spaces);
|
848 |
Inc(Col);
|
849 |
end;
|
850 |
if (Spaces > 0) then
|
851 |
Result := Result + PadW(WSpace, Spaces);
|
852 |
until (Col > Length(S));
|
853 |
end;
|
854 |
|
855 |
|
856 |
function DetabW(const S : WideString; TabSize : Byte) : WideString;
|
857 |
{-Expand tabs in a string to blanks.}
|
858 |
var
|
859 |
Col,
|
860 |
CP,
|
861 |
OP,
|
862 |
Spaces : Longint;
|
863 |
begin
|
864 |
if S = '' then begin
|
865 |
Result := '';
|
866 |
Exit;
|
867 |
end else if (TabSize = 0) then begin
|
868 |
Result := S;
|
869 |
Exit;
|
870 |
end;
|
871 |
if (CharCountW(S, WideChar(#9)) = 0) then begin
|
872 |
Result := S;
|
873 |
Exit;
|
874 |
end;
|
875 |
Result := '';
|
876 |
|
877 |
Col := 1;
|
878 |
while (Col <= Length(S)) do begin
|
879 |
if (S[Col] = WideChar(#9)) then begin
|
880 |
Spaces := 0;
|
881 |
repeat
|
882 |
Inc(Spaces);
|
883 |
until (((Col + Spaces) mod TabSize) = 1);
|
884 |
Inc(Col);
|
885 |
Result := PadW(Result, Length(Result) + Spaces);
|
886 |
end else begin
|
887 |
CP := Col;
|
888 |
repeat
|
889 |
Inc(Col);
|
890 |
until (Col > Length(S)) or (S[Col] = WideChar(#9));
|
891 |
OP := Length(Result) + 1;
|
892 |
SetLength(Result, Length(Result) + (Col - CP));
|
893 |
Move(S[CP], Result[OP], (Col-CP)*SizeOf(WideChar));
|
894 |
end;
|
895 |
end;
|
896 |
end;
|
897 |
|
898 |
|
899 |
function ScrambleW(const S, Key : WideString) : WideString;
|
900 |
{-Encrypt / Decrypt string with enhanced XOR encryption.}
|
901 |
var
|
902 |
I, J, LKey, LStr : Cardinal;
|
903 |
begin
|
904 |
Result := S;
|
905 |
if Key = '' then Exit;
|
906 |
if S = '' then Exit;
|
907 |
LKey := Length(Key);
|
908 |
LStr := Length(S);
|
909 |
I := 1;
|
910 |
J := LKey;
|
911 |
while I <= LStr do begin
|
912 |
if J = 0 then
|
913 |
J := LKey;
|
914 |
if (S[I] <> Key[J]) then
|
915 |
Result[I] := WideChar(Word(S[I]) xor Word(Key[J]));
|
916 |
Inc(I);
|
917 |
Dec(J);
|
918 |
end;
|
919 |
end;
|
920 |
|
921 |
function SubstituteW(const S, FromStr, ToStr : WideString) : WideString;
|
922 |
{-Map the characters found in FromStr to the corresponding ones in ToStr.}
|
923 |
var
|
924 |
I : Cardinal;
|
925 |
P : Cardinal;
|
926 |
begin
|
927 |
Result := S;
|
928 |
if Length(FromStr) = Length(ToStr) then
|
929 |
for I := 1 to Length(Result) do begin
|
930 |
if StrChPosW(FromStr, S[I], P) then
|
931 |
Result[I] := ToStr[P];
|
932 |
end;
|
933 |
end;
|
934 |
|
935 |
function FilterW(const S, Filters : WideString) : WideString;
|
936 |
{-Remove characters from a string. The characters to remove are specified in
|
937 |
ChSet.}
|
938 |
var
|
939 |
I : Cardinal;
|
940 |
Len : Cardinal;
|
941 |
begin
|
942 |
Len := 0;
|
943 |
SetLength(Result, Length(S));
|
944 |
for I := 1 to Length(S) do
|
945 |
if not CharExistsW(Filters, S[I]) then begin
|
946 |
Inc(Len);
|
947 |
Result[Len] := S[I];
|
948 |
end;
|
949 |
SetLength(Result, Len);
|
950 |
end;
|
951 |
|
952 |
{--------------- Word / Char manipulation -------------------------}
|
953 |
|
954 |
function CharExistsW(const S : WideString; C : WideChar) : Boolean;
|
955 |
{-see if character exists at least once in a string}
|
956 |
var
|
957 |
i : integer;
|
958 |
begin
|
959 |
Result := true;
|
960 |
for i := 1 to length(S) do
|
961 |
if (S[i] = C) then
|
962 |
Exit;
|
963 |
Result := false;
|
964 |
end;
|
965 |
|
966 |
function CharCountW(const S : WideString; C : WideChar) : Cardinal;
|
967 |
{-Count the number of a given character in a string. }
|
968 |
var
|
969 |
i : integer;
|
970 |
begin
|
971 |
Result := 0;
|
972 |
for i := 1 to length(S) do
|
973 |
if (S[i] = C) then
|
974 |
inc(Result);
|
975 |
end;
|
976 |
|
977 |
function WordCountW(const S, WordDelims : WideString) : Cardinal;
|
978 |
{-Given an array of word delimiters, return the number of words in a string.}
|
979 |
var
|
980 |
I : Cardinal;
|
981 |
SLen : Cardinal;
|
982 |
begin
|
983 |
Result := 0;
|
984 |
I := 1;
|
985 |
SLen := Length(S);
|
986 |
|
987 |
while I <= SLen do begin
|
988 |
{skip over delimiters}
|
989 |
while (I <= SLen) and CharExistsW(WordDelims, S[I]) do
|
990 |
Inc(I);
|
991 |
|
992 |
{if we're not beyond end of S, we're at the start of a word}
|
993 |
if I <= SLen then
|
994 |
Inc(Result);
|
995 |
|
996 |
{find the end of the current word}
|
997 |
while (I <= SLen) and not CharExistsW(WordDelims, S[I]) do
|
998 |
Inc(I);
|
999 |
end;
|
1000 |
end;
|
1001 |
|
1002 |
function WordPositionW(N : Cardinal; const S, WordDelims : WideString;
|
1003 |
var Pos : Cardinal) : Boolean;
|
1004 |
{-Given an array of word delimiters, set Pos to the start position of the
|
1005 |
N'th word in a string. Result indicates success/failure.}
|
1006 |
var
|
1007 |
Count : Longint;
|
1008 |
I : Longint;
|
1009 |
begin
|
1010 |
Count := 0;
|
1011 |
I := 1;
|
1012 |
Result := False;
|
1013 |
|
1014 |
while (I <= Length(S)) and (Count <> LongInt(N)) do begin
|
1015 |
{skip over delimiters}
|
1016 |
while (I <= Length(S)) and CharExistsW(WordDelims, S[I]) do
|
1017 |
Inc(I);
|
1018 |
|
1019 |
{if we're not beyond end of S, we're at the start of a word}
|
1020 |
if I <= Length(S) then
|
1021 |
Inc(Count);
|
1022 |
|
1023 |
{if not finished, find the end of the current word}
|
1024 |
if Count <> LongInt(N) then
|
1025 |
while (I <= Length(S)) and not CharExistsW(WordDelims, S[I]) do
|
1026 |
Inc(I)
|
1027 |
else begin
|
1028 |
Pos := I;
|
1029 |
Result := True;
|
1030 |
end;
|
1031 |
end;
|
1032 |
end;
|
1033 |
|
1034 |
function ExtractWordW(N : Cardinal; const S, WordDelims : WideString) : WideString;
|
1035 |
{-Given an array of word delimiters, return the N'th word in a string.}
|
1036 |
var
|
1037 |
C : Cardinal;
|
1038 |
I,
|
1039 |
J : Longint;
|
1040 |
begin
|
1041 |
Result := '';
|
1042 |
if WordPositionW(N, S, WordDelims, C) then begin
|
1043 |
I := C;
|
1044 |
{find the end of the current word}
|
1045 |
J := I;
|
1046 |
while (I <= Length(S)) and not
|
1047 |
CharExistsW(WordDelims, S[I]) do
|
1048 |
Inc(I);
|
1049 |
SetLength(Result, I-J);
|
1050 |
Move(S[J], Result[1], (I-J) * SizeOf(WideChar));
|
1051 |
end;
|
1052 |
end;
|
1053 |
|
1054 |
function AsciiCountW(const S, WordDelims : WideString; Quote : WideChar) : Cardinal;
|
1055 |
{-Return the number of words in a string.}
|
1056 |
var
|
1057 |
I : Longint;
|
1058 |
InQuote : Boolean;
|
1059 |
begin
|
1060 |
Result := 0;
|
1061 |
I := 1;
|
1062 |
InQuote := False;
|
1063 |
while I <= Length(S) do begin
|
1064 |
{skip over delimiters}
|
1065 |
while (I <= Length(S)) and (S[I] <> Quote)
|
1066 |
and CharExistsW(WordDelims, S[I]) do
|
1067 |
Inc(I);
|
1068 |
{if we're not beyond end of S, we're at the start of a word}
|
1069 |
if I <= Length(S) then
|
1070 |
Inc(Result);
|
1071 |
{find the end of the current word}
|
1072 |
while (I <= Length(S)) and
|
1073 |
(InQuote or not CharExistsW(WordDelims, S[I])) do begin
|
1074 |
if S[I] = Quote then
|
1075 |
InQuote := not InQuote;
|
1076 |
Inc(I);
|
1077 |
end;
|
1078 |
end;
|
1079 |
end;
|
1080 |
|
1081 |
function AsciiPositionW(N : Cardinal; const S, WordDelims : WideString;
|
1082 |
Quote : WideChar; var Pos : Cardinal) : Boolean;
|
1083 |
{-Return the position of the N'th word in a string.}
|
1084 |
var
|
1085 |
I,
|
1086 |
Count : Longint;
|
1087 |
InQuote : Boolean;
|
1088 |
begin
|
1089 |
Count := 0;
|
1090 |
InQuote := False;
|
1091 |
Result := False;
|
1092 |
I := 1;
|
1093 |
while (I <= Length(S)) and (Count <> LongInt(N)) do begin
|
1094 |
{skip over delimiters}
|
1095 |
while (I <= Length(S)) and (S[I] <> Quote) and
|
1096 |
CharExistsW(WordDelims, S[I]) do
|
1097 |
Inc(I);
|
1098 |
{if we're not beyond end of S, we're at the start of a word}
|
1099 |
if I <= Length(S) then
|
1100 |
Inc(Count);
|
1101 |
{if not finished, find the end of the current word}
|
1102 |
if Count <> LongInt(N) then
|
1103 |
while (I <= Length(S)) and
|
1104 |
(InQuote or not CharExistsW(WordDelims, S[I])) do begin
|
1105 |
if S[I] = Quote then
|
1106 |
InQuote := not InQuote;
|
1107 |
Inc(I);
|
1108 |
end
|
1109 |
else begin
|
1110 |
Pos := I;
|
1111 |
Result := True;
|
1112 |
end;
|
1113 |
end;
|
1114 |
end;
|
1115 |
|
1116 |
function ExtractAsciiW(N : Cardinal; const S, WordDelims : WideString;
|
1117 |
Quote : WideChar) : WideString;
|
1118 |
{-Given an array of word delimiters, return the N'th word in a string. Any
|
1119 |
text within Quote characters is counted as one word.}
|
1120 |
var
|
1121 |
C : Cardinal;
|
1122 |
I, J : Longint;
|
1123 |
InQuote : Boolean;
|
1124 |
begin
|
1125 |
InQuote := False;
|
1126 |
if AsciiPositionW(N, S, WordDelims, Quote, C) then begin
|
1127 |
I := C;
|
1128 |
J := I;
|
1129 |
{find the end of the current word}
|
1130 |
while (I <= Length(S)) and ((InQuote)
|
1131 |
or not CharExistsW(WordDelims, S[I])) do begin
|
1132 |
if S[I] = Quote then
|
1133 |
InQuote := not(InQuote);
|
1134 |
Inc(I);
|
1135 |
end;
|
1136 |
SetLength(Result, I-J);
|
1137 |
Move(S[J], Result[1], (I-J) * SizeOf(WideChar));
|
1138 |
end;
|
1139 |
end;
|
1140 |
|
1141 |
procedure WordWrapW(const InSt : WideString; var OutSt, Overlap : WideString;
|
1142 |
Margin : Cardinal; PadToMargin : Boolean);
|
1143 |
{-Wrap a text string at a specified margin.}
|
1144 |
var
|
1145 |
InStLen : Cardinal;
|
1146 |
EOS,
|
1147 |
BOS : Cardinal;
|
1148 |
ASpace : WideChar;
|
1149 |
begin
|
1150 |
InStLen := Length(InSt);
|
1151 |
|
1152 |
{!!.02 - Added }
|
1153 |
{ handle empty string on input }
|
1154 |
if InStLen = 0 then begin
|
1155 |
OutSt := '';
|
1156 |
Overlap := '';
|
1157 |
Exit;
|
1158 |
end;
|
1159 |
{!!.02 - Added }
|
1160 |
|
1161 |
{find the end of the output string}
|
1162 |
if InStLen > Margin then begin
|
1163 |
{find the end of the word at the margin, if any}
|
1164 |
EOS := Margin;
|
1165 |
while (EOS <= InStLen) and (InSt[EOS] <> ' ') do
|
1166 |
Inc(EOS);
|
1167 |
if EOS > InStLen then
|
1168 |
EOS := InStLen;
|
1169 |
|
1170 |
{trim trailing blanks}
|
1171 |
while (InSt[EOS] = ' ') and (EOS > 0) do
|
1172 |
Dec(EOS);
|
1173 |
|
1174 |
if EOS > Margin then begin
|
1175 |
{look for the space before the current word}
|
1176 |
while (EOS > 0) and (InSt[EOS] <> ' ') do
|
1177 |
Dec(EOS);
|
1178 |
|
1179 |
{if EOS = 0 then we can't wrap it}
|
1180 |
if EOS = 0 then
|
1181 |
EOS := Margin
|
1182 |
else
|
1183 |
{trim trailing blanks}
|
1184 |
while (InSt[EOS] = ' ') and (EOS > 0) do
|
1185 |
Dec(EOS);
|
1186 |
end;
|
1187 |
end else
|
1188 |
EOS := InStLen;
|
1189 |
|
1190 |
{copy the unwrapped portion of the line}
|
1191 |
SetLength(OutSt, EOS);
|
1192 |
Move(InSt[1], OutSt[1], Length(OutSt) * SizeOf(WideChar));
|
1193 |
|
1194 |
{find the start of the next word in the line}
|
1195 |
BOS := Succ(EOS);
|
1196 |
while (BOS <= InStLen) and (InSt[BOS] = ' ') do
|
1197 |
Inc(BOS);
|
1198 |
|
1199 |
if BOS > InStLen then
|
1200 |
SetLength(OverLap, 0)
|
1201 |
else begin
|
1202 |
{copy from the start of the next word to the end of the line}
|
1203 |
|
1204 |
SetLength(OverLap, InStLen);
|
1205 |
Move(InSt[BOS], Overlap[1], Succ(InStLen-BOS) * SizeOf(WideChar));
|
1206 |
SetLength(OverLap, Succ(InStLen-BOS));
|
1207 |
end;
|
1208 |
|
1209 |
{pad the end of the output string if requested}
|
1210 |
if PadToMargin and (Length(OutSt) < LongInt(Margin)) then begin
|
1211 |
SetLength(OutSt, Margin);
|
1212 |
ASpace := ' ';
|
1213 |
StUtils.FillWord(OutSt[Succ(Length(OutSt))],
|
1214 |
LongInt(Margin)-Length(OutSt), Word(ASpace));
|
1215 |
end;
|
1216 |
end;
|
1217 |
|
1218 |
{--------------- String comparison and searching -----------------}
|
1219 |
|
1220 |
function CompStringW(const S1, S2 : WideString) : Integer;
|
1221 |
{-Compare two strings.}
|
1222 |
begin
|
1223 |
Result := CompareStr(S1, S2);
|
1224 |
end;
|
1225 |
|
1226 |
function CompUCStringW(const S1, S2 : WideString) : Integer;
|
1227 |
{-Compare two strings. This compare is not case sensitive.}
|
1228 |
begin
|
1229 |
Result := CompareText(S1, S2);
|
1230 |
end;
|
1231 |
|
1232 |
{--------------- DOS pathname parsing -----------------}
|
1233 |
|
1234 |
function DefaultExtensionW(const Name, Ext : WideString) : WideString;
|
1235 |
{-Return a file name with a default extension attached.}
|
1236 |
var
|
1237 |
DotPos : Cardinal;
|
1238 |
begin
|
1239 |
if HasExtensionW(Name, DotPos) then
|
1240 |
Result := Name
|
1241 |
else if Name = '' then
|
1242 |
Result := ''
|
1243 |
else
|
1244 |
Result := Name + '.' + Ext;
|
1245 |
end;
|
1246 |
|
1247 |
function ForceExtensionW(const Name, Ext : WideString) : WideString;
|
1248 |
{-Force the specified extension onto the file name.}
|
1249 |
var
|
1250 |
DotPos : Cardinal;
|
1251 |
begin
|
1252 |
if HasExtensionW(Name, DotPos) then
|
1253 |
Result := System.Copy(Name, 1, DotPos) + Ext
|
1254 |
else if Name = '' then
|
1255 |
Result := ''
|
1256 |
else
|
1257 |
Result := Name + '.' + Ext;
|
1258 |
end;
|
1259 |
|
1260 |
function JustFilenameW(const PathName : WideString) : WideString;
|
1261 |
{-Return just the filename and extension of a pathname.}
|
1262 |
var
|
1263 |
I : Cardinal;
|
1264 |
begin
|
1265 |
Result := '';
|
1266 |
if PathName = '' then Exit;
|
1267 |
I := Succ(Word(Length(PathName)));
|
1268 |
repeat
|
1269 |
Dec(I);
|
1270 |
until (I = 0) or (pos(PathName[I], DosDelimSetW) > 0) {!!.01}
|
1271 |
or (PathName[I] = #0); {!!.01}
|
1272 |
Result := System.Copy(PathName, Succ(I), StMaxFileLen);
|
1273 |
end;
|
1274 |
|
1275 |
function JustNameW(const PathName : WideString) : WideString;
|
1276 |
{-Return just the filename (no extension, path, or drive) of a pathname.}
|
1277 |
var
|
1278 |
DotPos : Cardinal;
|
1279 |
S : WideString;
|
1280 |
begin
|
1281 |
S := JustFileNameW(PathName);
|
1282 |
if HasExtensionW(S, DotPos) then
|
1283 |
S := System.Copy(S, 1, DotPos-1);
|
1284 |
Result := S;
|
1285 |
end;
|
1286 |
|
1287 |
function JustExtensionW(const Name : WideString) : WideString;
|
1288 |
{-Return just the extension of a pathname.}
|
1289 |
var
|
1290 |
DotPos : Cardinal;
|
1291 |
begin
|
1292 |
if HasExtensionW(Name, DotPos) then
|
1293 |
Result := System.Copy(Name, Succ(DotPos), StMaxFileLen)
|
1294 |
else
|
1295 |
Result := '';
|
1296 |
end;
|
1297 |
|
1298 |
function JustPathnameW(const PathName : WideString) : WideString;
|
1299 |
{-Return just the drive and directory portion of a pathname.}
|
1300 |
var
|
1301 |
I : Cardinal;
|
1302 |
begin
|
1303 |
if PathName = '' then Exit;
|
1304 |
|
1305 |
I := Succ(Word(Length(PathName)));
|
1306 |
repeat
|
1307 |
Dec(I);
|
1308 |
until (I = 0) or (pos(PathName[I], DosDelimSetW) > 0) {!!.01}
|
1309 |
or (PathName[I] = #0); {!!.01}
|
1310 |
|
1311 |
if I = 0 then
|
1312 |
{Had no drive or directory name}
|
1313 |
SetLength(Result, 0)
|
1314 |
else if I = 1 then
|
1315 |
{Either the root directory of default drive or invalid pathname}
|
1316 |
Result := PathName[1]
|
1317 |
else if (PathName[I] = '\') then begin
|
1318 |
if PathName[Pred(I)] = ':' then
|
1319 |
{Root directory of a drive, leave trailing backslash}
|
1320 |
Result := System.Copy(PathName, 1, I)
|
1321 |
else
|
1322 |
{Subdirectory, remove the trailing backslash}
|
1323 |
Result := System.Copy(PathName, 1, Pred(I));
|
1324 |
end else
|
1325 |
{Either the default directory of a drive or invalid pathname}
|
1326 |
Result := System.Copy(PathName, 1, I);
|
1327 |
end;
|
1328 |
|
1329 |
|
1330 |
function AddBackSlashW(const DirName : WideString) : WideString;
|
1331 |
{-Add a default backslash to a directory name}
|
1332 |
begin
|
1333 |
Result := DirName;
|
1334 |
if (Length(Result) = 0) then
|
1335 |
Exit;
|
1336 |
if ((Length(Result) = 2) and (Result[2] = ':')) or
|
1337 |
((Length(Result) > 2) and (Result[Length(Result)] <> '\')) then
|
1338 |
Result := Result + '\';
|
1339 |
end;
|
1340 |
|
1341 |
function CleanFileNameW(const FileName : WideString) : WideString;
|
1342 |
{-Return filename with at most 8 chars of name and 3 of extension}
|
1343 |
var
|
1344 |
DotPos : Cardinal;
|
1345 |
NameLen : Word;
|
1346 |
begin
|
1347 |
if HasExtensionW(FileName, DotPos) then begin
|
1348 |
{Take the first 8 chars of name and first 3 chars of extension}
|
1349 |
NameLen := Pred(DotPos);
|
1350 |
if NameLen > 8 then
|
1351 |
NameLen := 8;
|
1352 |
Result := System.Copy(FileName, 1, NameLen)+System.Copy(FileName, DotPos, 4);
|
1353 |
end else
|
1354 |
{Take the first 8 chars of name}
|
1355 |
Result := System.Copy(FileName, 1, 8);
|
1356 |
end;
|
1357 |
|
1358 |
function CleanPathNameW(const PathName : WideString) : WideString;
|
1359 |
{-Return a pathname cleaned up as DOS does it.}
|
1360 |
var
|
1361 |
I : Cardinal;
|
1362 |
S : WideString;
|
1363 |
begin
|
1364 |
SetLength(Result, 0);
|
1365 |
S := PathName;
|
1366 |
|
1367 |
I := Succ(Word(Length(S)));
|
1368 |
repeat
|
1369 |
dec(I);
|
1370 |
if I > 2 then
|
1371 |
if (S[I] = '\') and (S[I-1] = '\') then
|
1372 |
if (S[I-2] <> ':') then
|
1373 |
System.Delete(S, I, 1);
|
1374 |
until I <= 0;
|
1375 |
|
1376 |
I := Succ(Word(Length(S)));
|
1377 |
repeat
|
1378 |
{Get the next directory or drive portion of pathname}
|
1379 |
repeat
|
1380 |
Dec(I);
|
1381 |
until (I = 0) or (S[I] in DosDelimSet); {!!.02}
|
1382 |
|
1383 |
{Clean it up and prepend it to output string}
|
1384 |
Result := CleanFileNameW(System.Copy(S, Succ(I), StMaxFileLen)) + Result;
|
1385 |
if I > 0 then begin
|
1386 |
Result := S[I] + Result;
|
1387 |
System.Delete(S, I, 255);
|
1388 |
end;
|
1389 |
until I <= 0;
|
1390 |
|
1391 |
end;
|
1392 |
|
1393 |
function HasExtensionW(const Name : WideString; var DotPos : Cardinal) : Boolean;
|
1394 |
{-Determine if a pathname contains an extension and, if so, return the
|
1395 |
position of the dot in front of the extension.}
|
1396 |
var
|
1397 |
I : Cardinal;
|
1398 |
begin
|
1399 |
DotPos := 0;
|
1400 |
for I := Length(Name) downto 1 do
|
1401 |
if (Name[I] = '.') and (DotPos = 0) then
|
1402 |
DotPos := I;
|
1403 |
Result := (DotPos > 0)
|
1404 |
and not CharExistsW(System.Copy(Name, Succ(DotPos), StMaxFileLen), '\');
|
1405 |
end;
|
1406 |
|
1407 |
{------------------ Formatting routines --------------------}
|
1408 |
|
1409 |
|
1410 |
function CommaizeChW(L : Longint; Ch : WideChar) : WideString;
|
1411 |
{-Convert a long integer to a string with Ch in comma positions}
|
1412 |
var
|
1413 |
Temp : WideString;
|
1414 |
I,
|
1415 |
Len,
|
1416 |
NumCommas : Cardinal;
|
1417 |
Neg : Boolean;
|
1418 |
begin
|
1419 |
SetLength(Temp, 1);
|
1420 |
Temp[1] := Ch;
|
1421 |
if (L < 0) then begin
|
1422 |
Neg := True;
|
1423 |
L := Abs(L);
|
1424 |
end else
|
1425 |
Neg := False;
|
1426 |
Result := Long2StrW(L);
|
1427 |
Len := Length(Result);
|
1428 |
NumCommas := (Pred(Len)) div 3;
|
1429 |
for I := 1 to NumCommas do
|
1430 |
System.Insert(Temp, Result, Succ(Len-(I * 3)));
|
1431 |
if Neg then
|
1432 |
System.Insert('-', Result, 1);
|
1433 |
end;
|
1434 |
|
1435 |
function CommaizeW(L : LongInt) : WideString;
|
1436 |
{-Convert a long integer to a string with commas}
|
1437 |
begin
|
1438 |
Result := CommaizeChW(L, ',');
|
1439 |
end;
|
1440 |
|
1441 |
function FormPrimW(const Mask : WideString;
|
1442 |
R : TstFloat;
|
1443 |
const LtCurr,
|
1444 |
RtCurr : WideString;
|
1445 |
Sep,
|
1446 |
DecPt : WideChar;
|
1447 |
AssumeDP : Boolean) : WideString;
|
1448 |
{-Returns a formatted string with digits from R merged into the Mask}
|
1449 |
const
|
1450 |
Blank = 0;
|
1451 |
Asterisk = 1;
|
1452 |
Zero = 2;
|
1453 |
const
|
1454 |
{$IFOPT N+}
|
1455 |
MaxPlaces = 18;
|
1456 |
{$ELSE}
|
1457 |
MaxPlaces = 11;
|
1458 |
{$ENDIF}
|
1459 |
FormChars : string[8] = '#@*$-+,.';
|
1460 |
PlusArray : array[Boolean] of WideChar = ('+', '-');
|
1461 |
MinusArray : array[Boolean] of WideChar = (' ', '-');
|
1462 |
FillArray : array[Blank..Zero] of WideChar = (' ', '*', '0');
|
1463 |
var
|
1464 |
S : WideString; {temporary string}
|
1465 |
Filler : Integer; {char for unused digit slots: ' ', '*', '0'}
|
1466 |
WontFit, {true if number won't fit in the mask}
|
1467 |
AddMinus, {true if minus sign needs to be added}
|
1468 |
Dollar, {true if floating dollar sign is desired}
|
1469 |
Negative : Boolean; {true if B is negative}
|
1470 |
StartF, {starting point of the numeric field}
|
1471 |
EndF : Longint; {end of numeric field}
|
1472 |
RtChars, {# of chars to add to right}
|
1473 |
LtChars, {# of chars to add to left}
|
1474 |
DotPos, {position of '.' in Mask}
|
1475 |
Digits, {total # of digits}
|
1476 |
Blanks, {# of blanks returned by Str}
|
1477 |
Places, {# of digits after the '.'}
|
1478 |
FirstDigit, {pos. of first digit returned by Str}
|
1479 |
Extras, {# of extra digits needed for special cases}
|
1480 |
DigitPtr : Byte; {pointer into temporary string of digits}
|
1481 |
I : Cardinal;
|
1482 |
label
|
1483 |
EndFound,
|
1484 |
RedoCase,
|
1485 |
Done;
|
1486 |
begin
|
1487 |
{assume decimal point at end?}
|
1488 |
Result := Mask;
|
1489 |
if (not AssumeDP) and (not CharExistsW(Result, '.')) then
|
1490 |
AssumeDP := true;
|
1491 |
if AssumeDP and (Result <> '') then begin
|
1492 |
SetLength(Result, Succ(Length(Result)));
|
1493 |
Result[Length(Result)] := '.';
|
1494 |
end;
|
1495 |
|
1496 |
RtChars := 0;
|
1497 |
LtChars := 0;
|
1498 |
|
1499 |
{check for empty string}
|
1500 |
if Length(Result) = 0 then
|
1501 |
goto Done;
|
1502 |
|
1503 |
{initialize variables}
|
1504 |
Filler := Blank;
|
1505 |
DotPos := 0;
|
1506 |
Places := 0;
|
1507 |
Digits := 0;
|
1508 |
Dollar := False;
|
1509 |
AddMinus := True;
|
1510 |
StartF := 1;
|
1511 |
|
1512 |
{store the sign of the real and make it positive}
|
1513 |
Negative := (R < 0);
|
1514 |
R := Abs(R);
|
1515 |
|
1516 |
{strip and count c's}
|
1517 |
for I := Length(Result) downto 1 do begin
|
1518 |
if Result[I] = 'C' then begin
|
1519 |
Inc(RtChars);
|
1520 |
System.Delete(Result, I, 1);
|
1521 |
end else if Result[I] = 'c' then begin
|
1522 |
Inc(LtChars);
|
1523 |
System.Delete(Result, I, 1);
|
1524 |
end;
|
1525 |
end;
|
1526 |
|
1527 |
{find the starting point for the field}
|
1528 |
while (StartF <= Length(Result))
|
1529 |
{and (System.Pos(Result[StartF], FormChars) = 0) do}
|
1530 |
and not CharExistsW(FormChars, Result[StartF]) do
|
1531 |
Inc(StartF);
|
1532 |
if StartF > Length(Result) then
|
1533 |
goto Done;
|
1534 |
|
1535 |
{find the end point for the field}
|
1536 |
EndF := StartF;
|
1537 |
for I := StartF to Length(Result) do begin
|
1538 |
EndF := I;
|
1539 |
case Result[EndF] of
|
1540 |
'*' : Filler := Asterisk;
|
1541 |
'@' : Filler := Zero;
|
1542 |
'$' : Dollar := True;
|
1543 |
'-',
|
1544 |
'+' : AddMinus := False;
|
1545 |
'#' : {ignore} ;
|
1546 |
',',
|
1547 |
'.' : DotPos := EndF;
|
1548 |
else
|
1549 |
goto EndFound;
|
1550 |
end;
|
1551 |
{Inc(EndF);}
|
1552 |
end;
|
1553 |
|
1554 |
{if we get here at all, the last char was part of the field}
|
1555 |
Inc(EndF);
|
1556 |
|
1557 |
EndFound:
|
1558 |
{if we jumped to here instead, it wasn't}
|
1559 |
Dec(EndF);
|
1560 |
|
1561 |
{disallow Dollar if Filler is Zero}
|
1562 |
if Filler = Zero then
|
1563 |
Dollar := False;
|
1564 |
|
1565 |
{we need an extra slot if Dollar is True}
|
1566 |
Extras := Ord(Dollar);
|
1567 |
|
1568 |
{get total # of digits and # after the decimal point}
|
1569 |
for I := StartF to EndF do
|
1570 |
case Result[I] of
|
1571 |
'#', '@',
|
1572 |
'*', '$' :
|
1573 |
begin
|
1574 |
Inc(Digits);
|
1575 |
if (I > DotPos) and (DotPos <> 0) then
|
1576 |
Inc(Places);
|
1577 |
end;
|
1578 |
end;
|
1579 |
|
1580 |
{need one more 'digit' if Places > 0}
|
1581 |
Inc(Digits, Ord(Places > 0));
|
1582 |
|
1583 |
{also need an extra blank if (1) Negative is true, and (2) Filler is Blank,
|
1584 |
and (3) AddMinus is true}
|
1585 |
if Negative and AddMinus and (Filler = Blank) then
|
1586 |
Inc(Extras)
|
1587 |
else
|
1588 |
AddMinus := False;
|
1589 |
|
1590 |
{translate the real to a string}
|
1591 |
Str(R:Digits:Places, S);
|
1592 |
|
1593 |
{add zeros that Str may have left out}
|
1594 |
if Places > MaxPlaces then begin
|
1595 |
I := Length(S);
|
1596 |
SetLength(S, LongInt(I) + (Places-MaxPlaces));
|
1597 |
StUtils.FillWord(S[Succ(I)], Places-MaxPlaces, Word(WideChar('0')));
|
1598 |
while (Length(S) > Digits) and (S[1] = ' ') do
|
1599 |
System.Delete(S, 1, 1);
|
1600 |
end;
|
1601 |
|
1602 |
{count number of initial blanks}
|
1603 |
Blanks := 1;
|
1604 |
while S[Blanks] = ' ' do
|
1605 |
Inc(Blanks);
|
1606 |
FirstDigit := Blanks;
|
1607 |
Dec(Blanks);
|
1608 |
|
1609 |
{the number won't fit if (a) S is longer than Digits or (b) the number of
|
1610 |
initial blanks is less than Extras}
|
1611 |
WontFit := (Length(S) > Digits) or (Blanks < Extras);
|
1612 |
|
1613 |
{if it won't fit, fill decimal slots with '*'}
|
1614 |
if WontFit then begin
|
1615 |
for I := StartF to EndF do
|
1616 |
case Result[I] of
|
1617 |
'#', '@', '*', '$' : Result[I] := '*';
|
1618 |
'+' : Result[I] := PlusArray[Negative];
|
1619 |
'-' : Result[I] := MinusArray[Negative];
|
1620 |
end;
|
1621 |
goto Done;
|
1622 |
end;
|
1623 |
|
1624 |
{fill initial blanks in S with Filler; insert floating dollar sign}
|
1625 |
if Blanks > 0 then begin
|
1626 |
FillWord(S[1], Blanks, Word(FillArray[Filler]));
|
1627 |
|
1628 |
{put floating dollar sign in last blank slot if necessary}
|
1629 |
if Dollar then begin
|
1630 |
S[Blanks] := LtCurr[1];
|
1631 |
Dec(Blanks);
|
1632 |
end;
|
1633 |
|
1634 |
{insert a minus sign if necessary}
|
1635 |
if AddMinus then
|
1636 |
S[Blanks] := '-';
|
1637 |
end;
|
1638 |
|
1639 |
{put in the digits / signs}
|
1640 |
DigitPtr := Length(S);
|
1641 |
for I := EndF downto StartF do begin
|
1642 |
RedoCase:
|
1643 |
case Result[I] of
|
1644 |
'#', '@', '*', '$' :
|
1645 |
if DigitPtr <> 0 then begin
|
1646 |
Result[I] := S[DigitPtr];
|
1647 |
Dec(DigitPtr);
|
1648 |
if (DigitPtr <> 0) and (S[DigitPtr] = '.') then {!!.01}
|
1649 |
Dec(DigitPtr);
|
1650 |
end
|
1651 |
else
|
1652 |
Result[I] := FillArray[Filler];
|
1653 |
',' :
|
1654 |
begin
|
1655 |
Result[I] := Sep;
|
1656 |
if (I < DotPos) and (DigitPtr < FirstDigit) then begin
|
1657 |
Result[I] := '#';
|
1658 |
goto RedoCase;
|
1659 |
end;
|
1660 |
end;
|
1661 |
'.' :
|
1662 |
begin
|
1663 |
Result[I] := DecPt;
|
1664 |
if (I < DotPos) and (DigitPtr < FirstDigit) then begin
|
1665 |
Result[I] := '#';
|
1666 |
goto RedoCase;
|
1667 |
end;
|
1668 |
end;
|
1669 |
'+' : Result[I] := PlusArray[Negative];
|
1670 |
'-' : Result[I] := MinusArray[Negative];
|
1671 |
end;
|
1672 |
end;
|
1673 |
|
1674 |
Done:
|
1675 |
if AssumeDP then
|
1676 |
SetLength(Result, Pred(Length(Result)));
|
1677 |
if RtChars > 0 then begin
|
1678 |
S := RtCurr;
|
1679 |
if Length(S) > RtChars then
|
1680 |
SetLength(S, RtChars)
|
1681 |
else
|
1682 |
S := LeftPadW(S, RtChars);
|
1683 |
Result := Result + S;
|
1684 |
end;
|
1685 |
if LtChars > 0 then begin
|
1686 |
S := LtCurr;
|
1687 |
if Length(S) > LtChars then
|
1688 |
SetLength(S, LtChars)
|
1689 |
else
|
1690 |
S := PadW(S, LtChars);
|
1691 |
Result := S + Result;
|
1692 |
end;
|
1693 |
end;
|
1694 |
|
1695 |
function FloatFormW(const Mask : WideString;
|
1696 |
R : TstFloat ;
|
1697 |
const LtCurr,
|
1698 |
RtCurr : WideString;
|
1699 |
Sep,
|
1700 |
DecPt : WideChar) : WideString;
|
1701 |
{-Return a formatted string with digits from R merged into mask.}
|
1702 |
begin
|
1703 |
Result := FormPrimW(Mask, R, LtCurr, RtCurr, Sep, DecPt, False);
|
1704 |
end;
|
1705 |
|
1706 |
function LongIntFormW(const Mask : WideString;
|
1707 |
L : Longint;
|
1708 |
const LtCurr,
|
1709 |
RtCurr : WideString;
|
1710 |
Sep : WideChar) : WideString;
|
1711 |
{-Return a formatted string with digits from L merged into mask.}
|
1712 |
begin
|
1713 |
Result := FormPrimW(Mask, L, LtCurr, RtCurr, Sep, '.', True);
|
1714 |
end;
|
1715 |
|
1716 |
function StrChPosW(const P : WideString; C : WideChar; var Pos : Cardinal) : Boolean;
|
1717 |
{-Return the position of a specified character within a string.}
|
1718 |
var
|
1719 |
i : integer;
|
1720 |
begin
|
1721 |
Result := true;
|
1722 |
for i := 1 to length(P) do
|
1723 |
if (P[i] = C) then begin
|
1724 |
Pos := i;
|
1725 |
Exit;
|
1726 |
end;
|
1727 |
Result := false;
|
1728 |
Pos := 0;
|
1729 |
end;
|
1730 |
|
1731 |
function StrStPosW(const P, S : WideString; var Pos : Cardinal) : Boolean;
|
1732 |
{-Return the position of a specified substring within a string.}
|
1733 |
begin
|
1734 |
Pos := System.Pos(S, P);
|
1735 |
Result := Pos <> 0;
|
1736 |
end;
|
1737 |
|
1738 |
function StrStCopyW(const S : WideString; Pos, Count : Cardinal) : WideString;
|
1739 |
{-Copy characters at a specified position in a string.}
|
1740 |
begin
|
1741 |
Result := System.Copy(S, Pos, Count);
|
1742 |
end;
|
1743 |
|
1744 |
function StrChInsertW(const S : WideString; C : WideChar; Pos : Cardinal) : WideString;
|
1745 |
{-Insert a character into a string at a specified position.}
|
1746 |
var
|
1747 |
Temp : WideString;
|
1748 |
begin
|
1749 |
SetLength(Temp, 1);
|
1750 |
Temp[1] := C;
|
1751 |
Result := S;
|
1752 |
System.Insert(Temp, Result, Pos);
|
1753 |
end;
|
1754 |
|
1755 |
function StrStInsertW(const S1, S2 : WideString; Pos : Cardinal) : WideString;
|
1756 |
{-Insert a string into another string at a specified position.}
|
1757 |
begin
|
1758 |
Result := S1;
|
1759 |
System.Insert(S2, Result, Pos);
|
1760 |
end;
|
1761 |
|
1762 |
function StrChDeleteW(const S : WideString; Pos : Cardinal) : WideString;
|
1763 |
{-Delete the character at a specified position in a string.}
|
1764 |
begin
|
1765 |
Result := S;
|
1766 |
System.Delete(Result, Pos, 1);
|
1767 |
end;
|
1768 |
|
1769 |
function StrStDeleteW(const S : WideString; Pos, Count : Cardinal) : WideString;
|
1770 |
{-Delete characters at a specified position in a string.}
|
1771 |
begin
|
1772 |
Result := S;
|
1773 |
System.Delete(Result, Pos, Count);
|
1774 |
end;
|
1775 |
|
1776 |
|
1777 |
|
1778 |
|
1779 |
function CopyLeftW(const S : WideString; Len : Cardinal) : WideString;
|
1780 |
{-Return the left Len characters of a string}
|
1781 |
begin
|
1782 |
if (Len < 1) or (S = '') then
|
1783 |
Result := ''
|
1784 |
else
|
1785 |
Result := Copy(S, 1, Len);
|
1786 |
end;
|
1787 |
|
1788 |
|
1789 |
|
1790 |
function CopyMidW(const S : WideString; First, Len : Cardinal) : WideString;
|
1791 |
{-Return the mid part of a string}
|
1792 |
begin
|
1793 |
if (LongInt(First) > Length(S)) or (Len < 1) or (S = '') then
|
1794 |
Result := ''
|
1795 |
else
|
1796 |
Result := Copy(S, First, Len);
|
1797 |
end;
|
1798 |
|
1799 |
|
1800 |
|
1801 |
function CopyRightW(const S : WideString; First : Cardinal) : WideString;
|
1802 |
{-Return the right Len characters of a string}
|
1803 |
begin
|
1804 |
if (LongInt(First) > Length(S)) or (First < 1) or (S = '') then
|
1805 |
Result := ''
|
1806 |
else
|
1807 |
Result := Copy(S, First, Length(S));
|
1808 |
end;
|
1809 |
|
1810 |
|
1811 |
function CopyRightAbsW(const S : WideString; NumChars : Cardinal) : WideString;
|
1812 |
{-Return NumChar characters starting from end}
|
1813 |
begin
|
1814 |
if (Cardinal(Length(S)) > NumChars) then
|
1815 |
Result := Copy(S, (Cardinal(Length(S)) - NumChars)+1, NumChars)
|
1816 |
else
|
1817 |
Result := S;
|
1818 |
end;
|
1819 |
|
1820 |
|
1821 |
function WordPosW(const S, WordDelims, AWord : WideString;
|
1822 |
N : Cardinal; var Position : Cardinal) : Boolean;
|
1823 |
{-returns the Nth instance of a given word within a string}
|
1824 |
var
|
1825 |
TmpStr : WideString;
|
1826 |
Len,
|
1827 |
I,
|
1828 |
P1,
|
1829 |
P2 : Cardinal;
|
1830 |
begin
|
1831 |
if (S = '') or (AWord = '') or (pos(AWord, S) = 0) then begin
|
1832 |
Result := False;
|
1833 |
Position := 0;
|
1834 |
Exit;
|
1835 |
end;
|
1836 |
|
1837 |
Result := False;
|
1838 |
Position := 0;
|
1839 |
|
1840 |
TmpStr := S;
|
1841 |
I := 0;
|
1842 |
Len := Length(AWord);
|
1843 |
P1 := pos(AWord, TmpStr);
|
1844 |
|
1845 |
while (P1 > 0) and (Length(TmpStr) > 0) do begin
|
1846 |
P2 := P1 + pred(Len);
|
1847 |
if (P1 = 1) then begin
|
1848 |
if (pos(TmpStr[P2+1], WordDelims) > 0) then begin
|
1849 |
Inc(I);
|
1850 |
end else
|
1851 |
System.Delete(TmpStr, 1, P2);
|
1852 |
end else if (pos(TmpStr[P1-1], WordDelims) > 0) and
|
1853 |
((pos(TmpStr[P2+1], WordDelims) > 0) or
|
1854 |
(LongInt(P2+1) = Length(TmpStr))) then begin
|
1855 |
Inc(I);
|
1856 |
end else if ((LongInt(P1) + LongInt(pred(Len))) = Length(TmpStr)) then begin
|
1857 |
if (P1 > 1) and (pos(TmpStr[P1-1], WordDelims) > 0) then
|
1858 |
Inc(I);
|
1859 |
end;
|
1860 |
|
1861 |
if (I = N) then begin
|
1862 |
Result := True;
|
1863 |
Position := Position + P1;
|
1864 |
Exit;
|
1865 |
end;
|
1866 |
System.Delete(TmpStr, 1, P2);
|
1867 |
Position := Position + P2;
|
1868 |
P1 := pos(AWord, TmpStr);
|
1869 |
end;
|
1870 |
end;
|
1871 |
|
1872 |
|
1873 |
|
1874 |
|
1875 |
function CopyFromNthWordW(const S, WordDelims : WideString;
|
1876 |
AWord : WideString; N : Cardinal;
|
1877 |
var SubString : WideString) : Boolean;
|
1878 |
var
|
1879 |
P : Cardinal;
|
1880 |
begin
|
1881 |
if (WordPosW(S, WordDelims, AWord, N, P)) then begin
|
1882 |
SubString := Copy(S, P, Length(S));
|
1883 |
Result := True;
|
1884 |
end else begin
|
1885 |
SubString := '';
|
1886 |
Result := False;
|
1887 |
end;
|
1888 |
end;
|
1889 |
|
1890 |
|
1891 |
|
1892 |
function DeleteFromNthWordW(const S, WordDelims : WideString;
|
1893 |
AWord : WideString; N : Cardinal;
|
1894 |
var SubString : WideString) : Boolean;
|
1895 |
var
|
1896 |
P : Cardinal;
|
1897 |
begin
|
1898 |
SubString := S;
|
1899 |
if (WordPosW(S, WordDelims, AWord, N, P)) then begin
|
1900 |
Result := True;
|
1901 |
SubString := Copy(S, 1, P-1);
|
1902 |
end else begin
|
1903 |
Result := False;
|
1904 |
SubString := '';
|
1905 |
end;
|
1906 |
end;
|
1907 |
|
1908 |
|
1909 |
|
1910 |
function CopyFromToWordW(const S, WordDelims, Word1, Word2 : WideString;
|
1911 |
N1, N2 : Cardinal;
|
1912 |
var SubString : WideString) : Boolean;
|
1913 |
var
|
1914 |
P1,
|
1915 |
P2 : Cardinal;
|
1916 |
begin
|
1917 |
if (WordPosW(S, WordDelims, Word1, N1, P1)) then begin
|
1918 |
if (WordPosW(S, WordDelims, Word2, N2, P2)) then begin
|
1919 |
Dec(P2);
|
1920 |
if (P2 > P1) then begin
|
1921 |
Result := True;
|
1922 |
SubString := Copy(S, P1, P2-P1);
|
1923 |
end else begin
|
1924 |
Result := False;
|
1925 |
SubString := '';
|
1926 |
end;
|
1927 |
end else begin
|
1928 |
Result := False;
|
1929 |
SubString := '';
|
1930 |
end;
|
1931 |
end else begin
|
1932 |
Result := False;
|
1933 |
SubString := '';
|
1934 |
end;
|
1935 |
end;
|
1936 |
|
1937 |
|
1938 |
|
1939 |
function DeleteFromToWordW(const S, WordDelims, Word1, Word2 : WideString;
|
1940 |
N1, N2 : Cardinal;
|
1941 |
var SubString : WideString) : Boolean;
|
1942 |
var
|
1943 |
P1,
|
1944 |
P2 : Cardinal;
|
1945 |
begin
|
1946 |
SubString := S;
|
1947 |
if (WordPosW(S, WordDelims, Word1, N1, P1)) then begin
|
1948 |
if (WordPosW(S, WordDelims, Word2, N2, P2)) then begin
|
1949 |
Dec(P2);
|
1950 |
if (P2 > P1) then begin
|
1951 |
Result := True;
|
1952 |
System.Delete(SubString, P1, P2-P1+1);
|
1953 |
end else begin
|
1954 |
Result := False;
|
1955 |
SubString := '';
|
1956 |
end;
|
1957 |
end else begin
|
1958 |
Result := False;
|
1959 |
SubString := '';
|
1960 |
end;
|
1961 |
end else begin
|
1962 |
Result := False;
|
1963 |
SubString := '';
|
1964 |
end;
|
1965 |
end;
|
1966 |
|
1967 |
|
1968 |
|
1969 |
function CopyWithinW(const S, Delimiter : WideString;
|
1970 |
Strip : Boolean) : WideString;
|
1971 |
var
|
1972 |
P1,
|
1973 |
P2 : Cardinal;
|
1974 |
TmpStr : WideString;
|
1975 |
begin
|
1976 |
if (S = '') or (Delimiter = '') or (pos(Delimiter, S) = 0) then
|
1977 |
Result := ''
|
1978 |
else begin
|
1979 |
if (StrStPosW(S, Delimiter, P1)) then begin
|
1980 |
TmpStr := Copy(S, LongInt(P1) + Length(Delimiter), Length(S));
|
1981 |
if StrStPosW(TmpStr, Delimiter, P2) then begin
|
1982 |
Result := Copy(TmpStr, 1, P2-1);
|
1983 |
if (not Strip) then
|
1984 |
Result := Delimiter + Result + Delimiter;
|
1985 |
end else begin
|
1986 |
Result := TmpStr;
|
1987 |
if (not Strip) then
|
1988 |
Result := Delimiter + Result;
|
1989 |
end;
|
1990 |
end;
|
1991 |
end;
|
1992 |
end;
|
1993 |
|
1994 |
|
1995 |
|
1996 |
function DeleteWithinW(const S, Delimiter : WideString) : WideString;
|
1997 |
var
|
1998 |
P1,
|
1999 |
P2 : Cardinal;
|
2000 |
TmpStr : WideString;
|
2001 |
begin
|
2002 |
if (S = '') or (Delimiter = '') or (pos(Delimiter, S) = 0) then
|
2003 |
Result := ''
|
2004 |
else begin
|
2005 |
if (StrStPosW(S, Delimiter, P1)) then begin
|
2006 |
TmpStr := Copy(S, LongInt(P1) + Length(Delimiter), Length(S));
|
2007 |
if (pos(Delimiter, TmpStr) = 0) then
|
2008 |
Result := Copy(S, 1, P1-1)
|
2009 |
else begin
|
2010 |
if (StrStPosW(TmpStr, Delimiter, P2)) then begin
|
2011 |
P2 := LongInt(P2) + (2*Length(Delimiter));
|
2012 |
Result := S;
|
2013 |
System.Delete(Result, P1, P2);
|
2014 |
end;
|
2015 |
end;
|
2016 |
end;
|
2017 |
end;
|
2018 |
end;
|
2019 |
|
2020 |
|
2021 |
|
2022 |
function ReplaceWordW(const S, WordDelims, OldWord, NewWord : WideString;
|
2023 |
N : Cardinal;
|
2024 |
var Replacements : Cardinal) : WideString;
|
2025 |
var
|
2026 |
I,
|
2027 |
C,
|
2028 |
P1 : Cardinal;
|
2029 |
begin
|
2030 |
if (S = '') or (WordDelims = '') or (OldWord = '') or
|
2031 |
(pos(OldWord, S) = 0) then begin
|
2032 |
Result := '';
|
2033 |
Replacements := 0;
|
2034 |
Exit;
|
2035 |
end;
|
2036 |
|
2037 |
if (WordPosW(S, WordDelims, OldWord, N, P1)) then begin
|
2038 |
Result := S;
|
2039 |
System.Delete(Result, P1, Length(OldWord));
|
2040 |
|
2041 |
C := 0;
|
2042 |
for I := 1 to Replacements do begin
|
2043 |
if (((Length(NewWord)) + Length(Result)) < MaxLongInt) then begin
|
2044 |
Inc(C);
|
2045 |
System.Insert(NewWord, Result, P1);
|
2046 |
Inc(P1, Length(NewWord) + 1);
|
2047 |
end else begin
|
2048 |
Replacements := C;
|
2049 |
Exit;
|
2050 |
end;
|
2051 |
end;
|
2052 |
end else begin
|
2053 |
Result := S;
|
2054 |
Replacements := 0;
|
2055 |
end;
|
2056 |
end;
|
2057 |
|
2058 |
|
2059 |
function ReplaceWordAllW(const S, WordDelims, OldWord, NewWord : WideString;
|
2060 |
var Replacements : Cardinal) : WideString;
|
2061 |
var
|
2062 |
I,
|
2063 |
C,
|
2064 |
P1 : Cardinal;
|
2065 |
begin
|
2066 |
if (S = '') or (WordDelims = '') or (OldWord = '') or
|
2067 |
(Pos(OldWord, S) = 0) then begin
|
2068 |
Result := S;
|
2069 |
Replacements := 0;
|
2070 |
end else begin
|
2071 |
Result := S;
|
2072 |
C := 0;
|
2073 |
while (WordPosW(Result, WordDelims, OldWord, 1, P1)) do begin
|
2074 |
System.Delete(Result, P1, Length(OldWord));
|
2075 |
for I := 1 to Replacements do begin
|
2076 |
if ((Length(NewWord) + Length(Result)) <= 255) then begin
|
2077 |
Inc(C);
|
2078 |
System.Insert(NewWord, Result, P1);
|
2079 |
end else begin
|
2080 |
Replacements := C;
|
2081 |
Exit;
|
2082 |
end;
|
2083 |
end;
|
2084 |
end;
|
2085 |
Replacements := C;
|
2086 |
end;
|
2087 |
end;
|
2088 |
|
2089 |
|
2090 |
function ReplaceStringW(const S, OldString, NewString : WideString;
|
2091 |
N : Cardinal;
|
2092 |
var Replacements : Cardinal) : WideString;
|
2093 |
var
|
2094 |
I,
|
2095 |
C,
|
2096 |
P1 : Cardinal;
|
2097 |
TmpStr : WideString;
|
2098 |
begin
|
2099 |
if (S = '') or (OldString = '') or (pos(OldString, S) = 0) then begin
|
2100 |
Result := S;
|
2101 |
Replacements := 0;
|
2102 |
Exit;
|
2103 |
end;
|
2104 |
TmpStr := S;
|
2105 |
|
2106 |
I := 1;
|
2107 |
P1 := pos(OldString, TmpStr);
|
2108 |
C := P1;
|
2109 |
while (I < N) and (LongInt(C) < Length(TmpStr)) do begin
|
2110 |
Inc(I);
|
2111 |
System.Delete(TmpStr, 1, LongInt(P1) + Length(OldString));
|
2112 |
Inc(C, LongInt(P1) + Length(OldString));
|
2113 |
end;
|
2114 |
Result := S;
|
2115 |
System.Delete(Result, C, Length(OldString));
|
2116 |
|
2117 |
C := 0;
|
2118 |
for I := 1 to Replacements do begin
|
2119 |
if (((Length(NewString)) + Length(Result)) < MaxLongInt) then begin
|
2120 |
Inc(C);
|
2121 |
System.Insert(NewString, Result, P1);
|
2122 |
Inc(P1, Length(NewString) + 1);
|
2123 |
end else begin
|
2124 |
Replacements := C;
|
2125 |
Exit;
|
2126 |
end;
|
2127 |
end;
|
2128 |
end;
|
2129 |
|
2130 |
|
2131 |
function ReplaceStringAllW(const S, OldString, NewString : WideString;
|
2132 |
var Replacements : Cardinal) : WideString;
|
2133 |
var
|
2134 |
I,
|
2135 |
C : Cardinal;
|
2136 |
P1 : longint;
|
2137 |
Tmp: WideString;
|
2138 |
begin
|
2139 |
Result := S;
|
2140 |
if (S = '') or (OldString = '') or (Pos(OldString, S) = 0) then
|
2141 |
Replacements := 0
|
2142 |
else begin
|
2143 |
Tmp := S;
|
2144 |
P1 := AnsiPos(OldString, S);
|
2145 |
if (P1 > 0) then begin
|
2146 |
Result := Copy(Tmp, 1, P1-1);
|
2147 |
C := 0;
|
2148 |
while (P1 > 0) do begin
|
2149 |
for I := 1 to Replacements do begin
|
2150 |
Inc(C);
|
2151 |
Result := Result + NewString;
|
2152 |
end;
|
2153 |
Tmp := Copy(Tmp, P1+Length(OldString), MaxLongInt);
|
2154 |
P1 := AnsiPos(OldString, Tmp);
|
2155 |
if (P1 > 0) then begin
|
2156 |
Result := Result + Copy(Tmp, 1, P1-1);
|
2157 |
end else
|
2158 |
Result := Result + Tmp;
|
2159 |
end;
|
2160 |
Replacements := C;
|
2161 |
end else begin
|
2162 |
Result := S;
|
2163 |
Replacements := 0;
|
2164 |
end;
|
2165 |
end;
|
2166 |
end;
|
2167 |
|
2168 |
|
2169 |
function LastWordW(const S, WordDelims, AWord : WideString;
|
2170 |
var Position : Cardinal) : Boolean;
|
2171 |
var
|
2172 |
TmpStr : WideString;
|
2173 |
I : Cardinal;
|
2174 |
begin
|
2175 |
if (S = '') or (WordDelims = '') or
|
2176 |
(AWord = '') or (pos(AWord, S) = 0) then begin
|
2177 |
Result := False;
|
2178 |
Position := 0;
|
2179 |
Exit;
|
2180 |
end;
|
2181 |
|
2182 |
TmpStr := S;
|
2183 |
I := Length(TmpStr);
|
2184 |
while (pos(TmpStr[I], WordDelims) > 0) do begin
|
2185 |
System.Delete(TmpStr, I, 1);
|
2186 |
I := Length(TmpStr);
|
2187 |
end;
|
2188 |
|
2189 |
Position := Length(TmpStr);
|
2190 |
repeat
|
2191 |
while (pos(TmpStr[Position], WordDelims) = 0) and (Position > 1) do
|
2192 |
Dec(Position);
|
2193 |
if (Copy(TmpStr, Position + 1, Length(AWord)) = AWord) then begin
|
2194 |
Inc(Position);
|
2195 |
Result := True;
|
2196 |
Exit;
|
2197 |
end;
|
2198 |
System.Delete(TmpStr, Position, Length(TmpStr));
|
2199 |
Position := Length(TmpStr);
|
2200 |
until (Length(TmpStr) = 0);
|
2201 |
Result := False;
|
2202 |
Position := 0;
|
2203 |
end;
|
2204 |
|
2205 |
|
2206 |
|
2207 |
function LastWordAbsW(const S, WordDelims : WideString;
|
2208 |
var Position : Cardinal) : Boolean;
|
2209 |
begin
|
2210 |
if (S = '') or (WordDelims = '') then begin
|
2211 |
Result := False;
|
2212 |
Position := 0;
|
2213 |
Exit;
|
2214 |
end;
|
2215 |
|
2216 |
{find first non-delimiter character, if any. If not a "one-word wonder"}
|
2217 |
Position := Length(S);
|
2218 |
while (Position > 0) and (pos(S[Position], WordDelims) > 0) do
|
2219 |
Dec(Position);
|
2220 |
|
2221 |
if (Position = 0) then begin
|
2222 |
Result := True;
|
2223 |
Position := 1;
|
2224 |
Exit;
|
2225 |
end;
|
2226 |
|
2227 |
{find next delimiter character}
|
2228 |
while (Position > 0) and (pos(S[Position], WordDelims) = 0) do
|
2229 |
Dec(Position);
|
2230 |
Inc(Position);
|
2231 |
Result := True;
|
2232 |
end;
|
2233 |
|
2234 |
|
2235 |
|
2236 |
function LastStringW(const S, AString : WideString;
|
2237 |
var Position : Cardinal) : Boolean;
|
2238 |
var
|
2239 |
TmpStr : WideString;
|
2240 |
I, C : Cardinal;
|
2241 |
begin
|
2242 |
if (S = '') or (AString = '') or (pos(AString, S) = 0) then begin
|
2243 |
Result := False;
|
2244 |
Position := 0;
|
2245 |
Exit;
|
2246 |
end;
|
2247 |
|
2248 |
TmpStr := S;
|
2249 |
C := 0;
|
2250 |
I := pos(AString, TmpStr);
|
2251 |
while (I > 0) do begin
|
2252 |
Inc(C, LongInt(I) + Length(AString));
|
2253 |
System.Delete(TmpStr, 1, LongInt(I) + Length(AString));
|
2254 |
I := pos(AString, TmpStr);
|
2255 |
end;
|
2256 |
{Go back the length of AString since the while loop deletes the last instance}
|
2257 |
Dec(C, Length(AString));
|
2258 |
Position := C;
|
2259 |
Result := True;
|
2260 |
end;
|
2261 |
|
2262 |
|
2263 |
|
2264 |
function KeepCharsW(const S, Chars : WideString) : WideString;
|
2265 |
var
|
2266 |
P1,
|
2267 |
P2 : Cardinal;
|
2268 |
begin
|
2269 |
if (S = '') or (Chars = '') then begin
|
2270 |
Result := '';
|
2271 |
Exit;
|
2272 |
end;
|
2273 |
|
2274 |
Result := '';
|
2275 |
P1 := 1;
|
2276 |
P2 := 1;
|
2277 |
repeat
|
2278 |
while (pos(S[P2], Chars) > 0) and (LongInt(P2) <= Length(S)) do
|
2279 |
Inc(P2);
|
2280 |
Result := Result + Copy(S, P1, P2-P1);
|
2281 |
P1 := P2+1;
|
2282 |
P2 := P1;
|
2283 |
while (pos(S[P2], Chars) = 0) and (LongInt(P2) <= Length(S)) do
|
2284 |
Inc(P2);
|
2285 |
P1 := P2;
|
2286 |
until (LongInt(P1) > Length(S));
|
2287 |
end;
|
2288 |
|
2289 |
|
2290 |
|
2291 |
function RepeatStringW(const RepeatString : WideString;
|
2292 |
var Repetitions : Cardinal;
|
2293 |
MaxLen : Cardinal) : WideString;
|
2294 |
var
|
2295 |
J,
|
2296 |
Len : Cardinal;
|
2297 |
begin
|
2298 |
Len := Length(RepeatString);
|
2299 |
Repetitions := MaxLen div Len;
|
2300 |
SetLength(Result, Repetitions * Len);
|
2301 |
for J := 0 to pred(Repetitions) do
|
2302 |
Move(RepeatString[1], Result[J * Len + 1], Len*SizeOf(WideChar));
|
2303 |
end;
|
2304 |
|
2305 |
|
2306 |
|
2307 |
function TrimCharsW(const S, Chars : WideString) : WideString;
|
2308 |
begin
|
2309 |
Result := RightTrimCharsW(S, Chars);
|
2310 |
Result := LeftTrimCharsW(Result, Chars);
|
2311 |
end;
|
2312 |
|
2313 |
|
2314 |
|
2315 |
function RightTrimCharsW(const S, Chars : WideString) : WideString;
|
2316 |
begin
|
2317 |
Result := S;
|
2318 |
while (pos(Result[Length(Result)], Chars) > 0) do
|
2319 |
System.Delete(Result, Length(Result), 1);
|
2320 |
end;
|
2321 |
|
2322 |
|
2323 |
|
2324 |
function LeftTrimCharsW(const S, Chars : WideString) : WideString;
|
2325 |
begin
|
2326 |
Result := S;
|
2327 |
while (pos(Result[1], Chars) > 0) do
|
2328 |
System.Delete(Result, 1, 1);
|
2329 |
end;
|
2330 |
|
2331 |
|
2332 |
|
2333 |
function ExtractTokensW(const S, Delims : WideString;
|
2334 |
QuoteChar : WideChar;
|
2335 |
AllowNulls : Boolean;
|
2336 |
Tokens : TStrings) : Cardinal;
|
2337 |
var
|
2338 |
State : (ScanStart,
|
2339 |
ScanQuotedToken,
|
2340 |
ScanQuotedTokenEnd,
|
2341 |
ScanNormalToken,
|
2342 |
ScanNormalTokenWithQuote);
|
2343 |
CurChar : WideChar;
|
2344 |
TokenStart : integer;
|
2345 |
Inx : integer;
|
2346 |
begin
|
2347 |
{Notes: this routine implements the following state machine
|
2348 |
start ----> ScanStart
|
2349 |
ScanStart-----quote----->ScanQuotedToken
|
2350 |
ScanStart-----delim----->ScanStart (1)
|
2351 |
ScanStart-----other----->ScanNormalToken
|
2352 |
ScanQuotedToken-----quote----->ScanQuotedTokenEnd
|
2353 |
ScanQuotedToken-----other----->ScanQuotedToken
|
2354 |
ScanQuotedTokenEnd-----quote----->ScanNormalTokenWithQuote
|
2355 |
ScanQuotedTokenEnd-----delim----->ScanStart (2)
|
2356 |
ScanQuotedTokenEnd-----other----->ScanNormalToken
|
2357 |
ScanNormalToken-----quote----->ScanNormalTokenWithQuote
|
2358 |
ScanNormalToken-----delim----->ScanStart (3)
|
2359 |
ScanNormalToken-----other----->ScanNormalToken
|
2360 |
ScanNormalTokenWithQuote-----quote----->ScanNormalTokenWithQuote
|
2361 |
ScanNormalTokenWithQuote-----other----->ScanNormalToken
|
2362 |
|
2363 |
(1) output a null token if allowed
|
2364 |
(2) output a token, stripping quotes (if the dequoted token is
|
2365 |
empty, output a null token if allowed)
|
2366 |
(3) output a token; no quote stripping
|
2367 |
|
2368 |
If the quote character is #0, it's taken to mean that the routine
|
2369 |
should not check for quoted substrings.}
|
2370 |
|
2371 |
{clear the tokens string list, set the return value to zero}
|
2372 |
Tokens.Clear;
|
2373 |
Result := 0;
|
2374 |
|
2375 |
{if the input string is empty or the delimiter list is empty or
|
2376 |
the quote character is found in the delimiter list, return zero
|
2377 |
tokens found}
|
2378 |
if (S = '') or
|
2379 |
(Delims = '') or
|
2380 |
CharExistsW(Delims, QuoteChar) then
|
2381 |
Exit;
|
2382 |
|
2383 |
{start off in the normal scanning state}
|
2384 |
State := ScanStart;
|
2385 |
|
2386 |
{the first token starts at position 1}
|
2387 |
TokenStart := 1;
|
2388 |
|
2389 |
{read through the entire string}
|
2390 |
for Inx := 1 to length(S) do begin
|
2391 |
|
2392 |
{get the current character}
|
2393 |
CurChar := S[Inx];
|
2394 |
|
2395 |
{process the character according to the current state}
|
2396 |
case State of
|
2397 |
ScanStart :
|
2398 |
begin
|
2399 |
{if the current char is the quote character, switch states}
|
2400 |
if (QuoteChar <> #0) and (CurChar = QuoteChar) then
|
2401 |
State := ScanQuotedToken
|
2402 |
|
2403 |
{if the current char is a delimiter, output a null token}
|
2404 |
else if CharExistsW(Delims, CurChar) then begin
|
2405 |
|
2406 |
{if allowed to, output a null token}
|
2407 |
if AllowNulls then begin
|
2408 |
Tokens.Add('');
|
2409 |
inc(Result);
|
2410 |
end;
|
2411 |
|
2412 |
{set the start of the next token to be one character after
|
2413 |
this delimiter}
|
2414 |
TokenStart := succ(Inx);
|
2415 |
end
|
2416 |
|
2417 |
{otherwise, the current char is starting a normal token, so
|
2418 |
switch states}
|
2419 |
else
|
2420 |
State := ScanNormalToken
|
2421 |
end;
|
2422 |
|
2423 |
ScanQuotedToken :
|
2424 |
begin
|
2425 |
{if the current char is the quote character, switch states}
|
2426 |
if (CurChar = QuoteChar) then
|
2427 |
State := ScanQuotedTokenEnd
|
2428 |
end;
|
2429 |
|
2430 |
ScanQuotedTokenEnd :
|
2431 |
begin
|
2432 |
{if the current char is the quote character, we have a token
|
2433 |
consisting of two (or more) quoted substrings, so switch
|
2434 |
states}
|
2435 |
if (CurChar = QuoteChar) then
|
2436 |
State := ScanNormalTokenWithQuote
|
2437 |
|
2438 |
{if the current char is a delimiter, output the token
|
2439 |
without the quotes}
|
2440 |
else if CharExistsW(Delims, CurChar) then begin
|
2441 |
|
2442 |
{if the token is empty without the quotes, output a null
|
2443 |
token only if allowed to}
|
2444 |
if ((Inx - TokenStart) = 2) then begin
|
2445 |
if AllowNulls then begin
|
2446 |
Tokens.Add('');
|
2447 |
inc(Result);
|
2448 |
end
|
2449 |
end
|
2450 |
|
2451 |
{else output the token without the quotes}
|
2452 |
else begin
|
2453 |
Tokens.Add(Copy(S, succ(TokenStart), Inx - TokenStart - 2));
|
2454 |
inc(Result);
|
2455 |
end;
|
2456 |
|
2457 |
{set the start of the next token to be one character after
|
2458 |
this delimiter}
|
2459 |
TokenStart := succ(Inx);
|
2460 |
|
2461 |
{switch states back to the start state}
|
2462 |
State := ScanStart;
|
2463 |
end
|
2464 |
|
2465 |
{otherwise it's a (complex) normal token, so switch states}
|
2466 |
else
|
2467 |
State := ScanNormalToken
|
2468 |
end;
|
2469 |
|
2470 |
ScanNormalToken :
|
2471 |
begin
|
2472 |
{if the current char is the quote character, we have a
|
2473 |
complex token with at least one quoted substring, so switch
|
2474 |
states}
|
2475 |
if (QuoteChar <> #0) and (CurChar = QuoteChar) then
|
2476 |
State := ScanNormalTokenWithQuote
|
2477 |
|
2478 |
{if the current char is a delimiter, output the token}
|
2479 |
else if CharExistsW(Delims, CurChar) then begin
|
2480 |
Tokens.Add(Copy(S, TokenStart, Inx - TokenStart));
|
2481 |
inc(Result);
|
2482 |
|
2483 |
{set the start of the next token to be one character after
|
2484 |
this delimiter}
|
2485 |
TokenStart := succ(Inx);
|
2486 |
|
2487 |
{switch states back to the start state}
|
2488 |
State := ScanStart;
|
2489 |
end;
|
2490 |
end;
|
2491 |
|
2492 |
ScanNormalTokenWithQuote :
|
2493 |
begin
|
2494 |
{if the current char is the quote character, switch states
|
2495 |
back to scanning a normal token}
|
2496 |
if (CurChar = QuoteChar) then
|
2497 |
State := ScanNormalToken;
|
2498 |
end;
|
2499 |
|
2500 |
end;
|
2501 |
end;
|
2502 |
|
2503 |
{we need to process the (possible) final token: first assume that
|
2504 |
the current character index is just beyond the end of the string}
|
2505 |
Inx := succ(length(S));
|
2506 |
|
2507 |
{if we are in the scanning quoted token state, we've read an opening
|
2508 |
quote, but no closing one; increment the token start value}
|
2509 |
if (State = ScanQuotedToken) then
|
2510 |
inc(TokenStart)
|
2511 |
|
2512 |
{if we've finished scanning a quoted token, we've read both quotes;
|
2513 |
increment the token start value, and decrement the current index}
|
2514 |
else if (State = ScanQuotedTokenEnd) then begin
|
2515 |
inc(TokenStart);
|
2516 |
dec(Inx);
|
2517 |
end;
|
2518 |
|
2519 |
{if the final token is not empty, output the token}
|
2520 |
if (TokenStart < Inx) then begin
|
2521 |
Tokens.Add(Copy(S, TokenStart, Inx - TokenStart));
|
2522 |
inc(Result);
|
2523 |
end
|
2524 |
{otherwise the final token is empty, so output a null token if
|
2525 |
allowed to}
|
2526 |
else if AllowNulls then begin
|
2527 |
Tokens.Add('');
|
2528 |
inc(Result);
|
2529 |
end;
|
2530 |
end;
|
2531 |
|
2532 |
|
2533 |
|
2534 |
function ContainsOnlyW(const S, Chars : WideString;
|
2535 |
var BadPos : Cardinal) : Boolean;
|
2536 |
var
|
2537 |
I : Cardinal;
|
2538 |
begin
|
2539 |
if (S = '') then begin
|
2540 |
Result := False;
|
2541 |
BadPos := 0;
|
2542 |
end else begin
|
2543 |
for I := 1 to Length(S) do begin
|
2544 |
if (not CharExistsW(Chars, S[I])) then begin
|
2545 |
BadPos := I;
|
2546 |
Result := False;
|
2547 |
Exit;
|
2548 |
end;
|
2549 |
end;
|
2550 |
Result := True;
|
2551 |
BadPos := 0;
|
2552 |
end;
|
2553 |
end;
|
2554 |
|
2555 |
|
2556 |
|
2557 |
function ContainsOtherThanW(const S, Chars : WideString;
|
2558 |
var BadPos : Cardinal) : Boolean;
|
2559 |
var
|
2560 |
I : Cardinal;
|
2561 |
begin
|
2562 |
if (S = '') then begin
|
2563 |
Result := False;
|
2564 |
BadPos := 0;
|
2565 |
end else begin
|
2566 |
for I := 1 to Length(S) do begin
|
2567 |
if (CharExistsW(Chars, S[I])) then begin
|
2568 |
BadPos := I;
|
2569 |
Result := True;
|
2570 |
Exit;
|
2571 |
end;
|
2572 |
end;
|
2573 |
Result := False;
|
2574 |
BadPos := 0;
|
2575 |
end;
|
2576 |
end;
|
2577 |
|
2578 |
|
2579 |
|
2580 |
function IsChAlphaW(C : WideChar) : Boolean;
|
2581 |
{-Returns true if Ch is an alpha}
|
2582 |
begin
|
2583 |
Result := Windows.IsCharAlphaW(C);
|
2584 |
end;
|
2585 |
|
2586 |
|
2587 |
|
2588 |
function IsChNumericW(C : WideChar; Numbers : WideString) : Boolean;
|
2589 |
{-Returns true if Ch in numeric set}
|
2590 |
begin
|
2591 |
Result := pos(C, Numbers) > 0;
|
2592 |
end;
|
2593 |
|
2594 |
|
2595 |
|
2596 |
function IsChAlphaNumericW(C : WideChar; Numbers : WideString) : Boolean;
|
2597 |
{-Returns true if Ch is an alpha or numeric}
|
2598 |
begin
|
2599 |
Result := (Windows.IsCharAlphaW(C)) or (pos(C, Numbers) > 0);
|
2600 |
end;
|
2601 |
|
2602 |
|
2603 |
|
2604 |
function IsStrAlphaW(const S : WideString) : Boolean;
|
2605 |
{-Returns true if all characters in string are an alpha}
|
2606 |
var
|
2607 |
I : Cardinal;
|
2608 |
begin
|
2609 |
if (S = '') then
|
2610 |
Result := False
|
2611 |
else begin
|
2612 |
for I := 1 to Length(S) do begin
|
2613 |
Result := Windows.IsCharAlphaW(S[I]);
|
2614 |
if not Result then
|
2615 |
Exit;
|
2616 |
end;
|
2617 |
Result := True;
|
2618 |
end;
|
2619 |
end;
|
2620 |
|
2621 |
|
2622 |
|
2623 |
function IsStrNumericW(const S, Numbers : WideString) : Boolean;
|
2624 |
{-Returns true if all characters in string are in numeric set}
|
2625 |
var
|
2626 |
I : Cardinal;
|
2627 |
begin
|
2628 |
if (S = '') then
|
2629 |
Result := False
|
2630 |
else begin
|
2631 |
for I := 1 to Length(S) do begin
|
2632 |
Result := pos(S[I], Numbers) > 0;
|
2633 |
if not Result then
|
2634 |
Exit;
|
2635 |
end;
|
2636 |
Result := True;
|
2637 |
end;
|
2638 |
end;
|
2639 |
|
2640 |
|
2641 |
function IsStrAlphaNumericW(const S, Numbers : WideString) : Boolean;
|
2642 |
{-Returns true if all characters in string are alpha or numeric}
|
2643 |
var
|
2644 |
I : Cardinal;
|
2645 |
begin
|
2646 |
if (S = '') then
|
2647 |
Result := False
|
2648 |
else begin
|
2649 |
for I := 1 to Length(S) do begin
|
2650 |
Result := (Windows.IsCharAlphaW(S[I])) or (pos(S[I], Numbers) > 0);
|
2651 |
if not Result then
|
2652 |
Exit;
|
2653 |
end;
|
2654 |
Result := True;
|
2655 |
end;
|
2656 |
end;
|
2657 |
|
2658 |
function StrWithinW(const S, SearchStr : WideString;
|
2659 |
Start : Cardinal;
|
2660 |
var Position : Cardinal) : boolean;
|
2661 |
var
|
2662 |
TmpStr : WideString;
|
2663 |
begin
|
2664 |
TmpStr := S;
|
2665 |
if (Start > 1) then
|
2666 |
System.Delete(TmpStr, 1, Start-1);
|
2667 |
Position := pos(SearchStr, TmpStr);
|
2668 |
if (Position > 0) then begin
|
2669 |
Position := Position + Start - 1;
|
2670 |
Result := True;
|
2671 |
end else
|
2672 |
Result := False;
|
2673 |
end;
|
2674 |
|
2675 |
end.
|