feat(apk): scanner le QR du poste depuis l'app (ZXing.Delphi, Apache 2.0)
Le scanner du systeme demandait avec quoi ouvrir le lien. L'app ouvre la camera arriere, decode une image sur quatre et remplit URL + jeton des qu'un lien pmserver://sync est lu. Rien n'est enregistre avant Save. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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unit ZXing.StringUtils;
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{
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* Copyright 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* Implemented by E. Spelt for Delphi
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}
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interface
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uses SysUtils, Generics.Collections, ZXing.DecodeHintType;
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type
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TStringUtils = class abstract
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const
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UTF8 = 'UTF-8';
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EUC_JP = 'EUC-JP';
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ISO88591 = 'ISO-8859-1';
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class procedure ClassInit;
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class var ASSUME_SHIFT_JIS: boolean;
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class var PLATFORM_DEFAULT_ENCODING: string;
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public
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class var GB2312: string;
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class var SHIFT_JIS: string;
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class function guessEncoding(bytes: TArray<Byte>;
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hints: TDictionary<TDecodeHintType, TObject>): string; static;
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end;
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implementation
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class procedure TStringUtils.ClassInit;
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begin
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PLATFORM_DEFAULT_ENCODING := 'ISO-8859-1'; // 'ISO 8859-15';
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SHIFT_JIS := 'SJIS';
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GB2312 := 'GB2312';
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ASSUME_SHIFT_JIS := (string.Compare(TStringUtils.SHIFT_JIS,
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TStringUtils.PLATFORM_DEFAULT_ENCODING, true) = 0) or
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(string.Compare('EUC-JP', TStringUtils.PLATFORM_DEFAULT_ENCODING,
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true) = 0);
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end;
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class function TStringUtils.guessEncoding(bytes: TArray<Byte>;
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hints: TDictionary<TDecodeHintType, TObject>): string;
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var
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characterSet: string;
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utf8BytesLeft, utf2BytesChars, utf3BytesChars, utf4BytesChars, sjisBytesLeft,
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sjisKatakanaChars, sjisCurKatakanaWordLength, sjisCurDoubleBytesWordLength,
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sjisMaxKatakanaWordLength, sjisMaxDoubleBytesWordLength, isoHighOther, len,
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i, value: Integer;
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utf8bom, canBeISO88591, canBeShiftJIS, canBeUTF8: boolean;
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begin
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if ((hints <> nil) and hints.ContainsKey(ZXing.DecodeHintType.CHARACTER_SET)) then
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begin
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characterSet := string(hints[ZXing.DecodeHintType.CHARACTER_SET]);
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if (characterSet <> '') then
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begin
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Result := characterSet;
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exit
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end
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end;
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len := length(bytes);
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canBeISO88591 := true;
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canBeShiftJIS := true;
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canBeUTF8 := true;
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utf8BytesLeft := 0;
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utf2BytesChars := 0;
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utf3BytesChars := 0;
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utf4BytesChars := 0;
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sjisBytesLeft := 0;
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sjisKatakanaChars := 0;
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sjisCurKatakanaWordLength := 0;
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sjisCurDoubleBytesWordLength := 0;
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sjisMaxKatakanaWordLength := 0;
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sjisMaxDoubleBytesWordLength := 0;
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isoHighOther := 0;
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utf8bom := ((((length(bytes) > 3) and (bytes[0] = $EF)) and (bytes[1] = $BB))
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and (bytes[2] = $BF));
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i := 0;
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while (((i < len) and ((canBeISO88591 or canBeShiftJIS) or canBeUTF8))) do
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begin
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value := (bytes[i] and $FF);
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if (canBeUTF8) then
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if (utf8BytesLeft > 0) then
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if ((value and $80) = 0) then
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canBeUTF8 := false
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else
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dec(utf8BytesLeft)
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else if ((value and $80) <> 0) then
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if ((value and $40) = 0) then
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canBeUTF8 := false
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else
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begin
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inc(utf8BytesLeft);
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if ((value and $20) = 0) then
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inc(utf2BytesChars)
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else
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begin
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inc(utf8BytesLeft);
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if ((value and $10) = 0) then
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inc(utf3BytesChars)
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else
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begin
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inc(utf8BytesLeft);
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if ((value and 8) = 0) then
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inc(utf4BytesChars)
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else
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canBeUTF8 := false
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end
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end
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end;
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if (canBeISO88591) then
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if ((value > $7F) and (value < 160)) then
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canBeISO88591 := false
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else if ((value > $9F) and (((value < $C0) or (value = $D7)) or
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(value = $F7))) then
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inc(isoHighOther);
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if (canBeShiftJIS) then
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if (sjisBytesLeft > 0) then
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if (((value < $40) or (value = $7F)) or (value > $FC)) then
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canBeShiftJIS := false
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else
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dec(sjisBytesLeft)
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else if (((value = $80) or (value = 160)) or (value > $EF)) then
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canBeShiftJIS := false
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else if ((value > 160) and (value < $E0)) then
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begin
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inc(sjisKatakanaChars);
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sjisCurDoubleBytesWordLength := 0;
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inc(sjisCurKatakanaWordLength);
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if (sjisCurKatakanaWordLength > sjisMaxKatakanaWordLength) then
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sjisMaxKatakanaWordLength := sjisCurKatakanaWordLength
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end
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else if (value > $7F) then
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begin
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inc(sjisBytesLeft);
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sjisCurKatakanaWordLength := 0;
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inc(sjisCurDoubleBytesWordLength);
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if (sjisCurDoubleBytesWordLength > sjisMaxDoubleBytesWordLength) then
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sjisMaxDoubleBytesWordLength := sjisCurDoubleBytesWordLength
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end
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else
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begin
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sjisCurKatakanaWordLength := 0;
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sjisCurDoubleBytesWordLength := 0
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end;
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inc(i)
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end;
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if (canBeUTF8 and (utf8BytesLeft > 0)) then
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canBeUTF8 := false;
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if (canBeShiftJIS and (sjisBytesLeft > 0)) then
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canBeShiftJIS := false;
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if (canBeUTF8 and (utf8bom or (((utf2BytesChars + utf3BytesChars) +
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utf4BytesChars) > 0))) then
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begin
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Result := 'UTF-8';
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exit
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end;
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if (canBeShiftJIS and ((TStringUtils.ASSUME_SHIFT_JIS or
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(sjisMaxKatakanaWordLength >= 3)) or (sjisMaxDoubleBytesWordLength >= 3)))
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then
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begin
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Result := TStringUtils.SHIFT_JIS;
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exit
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end;
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if (canBeISO88591 and canBeShiftJIS) then
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begin
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if (((sjisMaxKatakanaWordLength = 2) and (sjisKatakanaChars = 2)) or
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((isoHighOther * 10) >= len)) then
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Result := TStringUtils.SHIFT_JIS
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else
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Result := 'ISO-8859-1';
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exit
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end;
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if (canBeISO88591) then
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begin
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Result := 'ISO-8859-1';
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exit
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end;
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if (canBeShiftJIS) then
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begin
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Result := TStringUtils.SHIFT_JIS;
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exit
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end;
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if (canBeUTF8) then
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begin
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Result := 'UTF-8';
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exit
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end;
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Result := TStringUtils.PLATFORM_DEFAULT_ENCODING;
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end;
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Initialization
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TStringUtils.ClassInit;
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end.
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