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/*
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* Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <stdlib.h>
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const int KErrorIllFormedInput=-1;
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int Utf8ToUnicode(wchar_t* aUnicode, const char* aUtf8)
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// must '\0'-terminate the output
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{
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wchar_t* startOfUnicode=aUnicode;
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for (;;)
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{
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unsigned int currentUtf8Byte=*aUtf8;
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if (currentUtf8Byte=='\0')
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{
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break;
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}
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if ((currentUtf8Byte&0x80)==0x00)
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{
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if (startOfUnicode!=NULL)
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{
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*aUnicode=(wchar_t)currentUtf8Byte;
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}
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}
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else if ((currentUtf8Byte&0xe0)==0xc0)
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{
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unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x1f)<<6);
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
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if (startOfUnicode!=NULL)
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{
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*aUnicode=(wchar_t)currentUnicodeCharacter;
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}
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}
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else if ((currentUtf8Byte&0xf0)==0xe0)
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{
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unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x0f)<<12);
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=((currentUtf8Byte&0x3f)<<6);
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
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if (startOfUnicode!=NULL)
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{
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*aUnicode=(wchar_t)currentUnicodeCharacter;
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}
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}
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else if ((currentUtf8Byte&0xf8)==0xf0)
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{
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unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x07)<<8);
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=((currentUtf8Byte&0x3f)<<2);
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if (currentUnicodeCharacter<0x0040)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter-=0x0040;
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if (currentUnicodeCharacter>=0x0400)
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{
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return KErrorIllFormedInput;
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}
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=((currentUtf8Byte&0x30)>>4);
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if (startOfUnicode!=NULL)
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{
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*aUnicode=(wchar_t)(0xd800|currentUnicodeCharacter);
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}
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currentUnicodeCharacter=((currentUtf8Byte&0x0f)<<6);
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++aUtf8;
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currentUtf8Byte=*aUtf8;
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if ((currentUtf8Byte&0xc0)!=0x80)
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{
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return KErrorIllFormedInput;
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}
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currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
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++aUnicode;
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if (startOfUnicode!=NULL)
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{
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*aUnicode=(wchar_t)(0xdc00|currentUnicodeCharacter);
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}
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}
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else
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{
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return KErrorIllFormedInput;
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}
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++aUnicode;
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++aUtf8;
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}
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if (startOfUnicode!=NULL)
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{
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*aUnicode='\0';
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}
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return aUnicode-startOfUnicode;
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}
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#include <STDIO.H>
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int UnicodeToUtf8(char* aUtf8, const wchar_t* aUnicode)
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// must '\0'-terminate the output
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{
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char* startOfUtf8=aUtf8;
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for (;;)
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{
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unsigned int currentUnicodeCharacter=*aUnicode;
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if (currentUnicodeCharacter=='\0')
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{
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break;
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}
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if ((currentUnicodeCharacter&0xff80)==0x0000)
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{
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)currentUnicodeCharacter;
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}
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}
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else if ((currentUnicodeCharacter&0xf800)==0x0000)
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{
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0xc0|(currentUnicodeCharacter>>6));
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}
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
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}
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}
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else if ((currentUnicodeCharacter&0xfc00)==0xd800)
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{
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currentUnicodeCharacter+=0x0040;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0xf0|((currentUnicodeCharacter>>8)&0x07));
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}
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0x80|((currentUnicodeCharacter>>2)&0x3f));
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}
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{
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unsigned int currentUtf8Byte=(0x80|((currentUnicodeCharacter&0x03)<<4));
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++aUnicode;
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currentUnicodeCharacter=*aUnicode;
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if ((currentUnicodeCharacter&0xfc00)!=0xdc00)
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{
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return KErrorIllFormedInput;
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}
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currentUtf8Byte|=((currentUnicodeCharacter>>6)&0x0f);
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)currentUtf8Byte;
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}
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}
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
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}
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}
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else
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{
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0xe0|(currentUnicodeCharacter>>12));
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}
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0x80|((currentUnicodeCharacter>>6)&0x3f));
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}
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++aUtf8;
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if (startOfUtf8!=NULL)
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{
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*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
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}
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}
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++aUtf8;
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++aUnicode;
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}
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if (startOfUtf8!=NULL)
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{
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*aUtf8='\0';
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}
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return aUtf8-startOfUtf8;
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}
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