--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/charconvfw/charconv_fw/tools/convtool/utf.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,225 @@
+/*
+* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#include <STDLIB.H>
+
+const int KErrorIllFormedInput=-1;
+
+int Utf8ToUnicode(wchar_t* aUnicode, const char* aUtf8)
+// must '\0'-terminate the output
+	{
+	wchar_t* startOfUnicode=aUnicode;
+	for (;;)
+		{
+		unsigned int currentUtf8Byte=*aUtf8;
+		if (currentUtf8Byte=='\0')
+			{
+			break;
+			}
+		if ((currentUtf8Byte&0x80)==0x00)
+			{
+			if (startOfUnicode!=NULL)
+				{
+				*aUnicode=(wchar_t)currentUtf8Byte;
+				}
+			}
+		else if ((currentUtf8Byte&0xe0)==0xc0)
+			{
+			unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x1f)<<6);
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
+			if (startOfUnicode!=NULL)
+				{
+				*aUnicode=(wchar_t)currentUnicodeCharacter;
+				}
+			}
+		else if ((currentUtf8Byte&0xf0)==0xe0)
+			{
+			unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x0f)<<12);
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=((currentUtf8Byte&0x3f)<<6);
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
+			if (startOfUnicode!=NULL)
+				{
+				*aUnicode=(wchar_t)currentUnicodeCharacter;
+				}
+			}
+		else if ((currentUtf8Byte&0xf8)==0xf0)
+			{
+			unsigned int currentUnicodeCharacter=((currentUtf8Byte&0x07)<<8);
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=((currentUtf8Byte&0x3f)<<2);
+			if (currentUnicodeCharacter<0x0040)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter-=0x0040;
+			if (currentUnicodeCharacter>=0x0400)
+				{
+				return KErrorIllFormedInput;
+				}
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=((currentUtf8Byte&0x30)>>4);
+			if (startOfUnicode!=NULL)
+				{
+				*aUnicode=(wchar_t)(0xd800|currentUnicodeCharacter);
+				}
+			currentUnicodeCharacter=((currentUtf8Byte&0x0f)<<6);
+			++aUtf8;
+			currentUtf8Byte=*aUtf8;
+			if ((currentUtf8Byte&0xc0)!=0x80)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUnicodeCharacter|=(currentUtf8Byte&0x3f);
+			++aUnicode;
+			if (startOfUnicode!=NULL)
+				{
+				*aUnicode=(wchar_t)(0xdc00|currentUnicodeCharacter);
+				}
+			}
+		else
+			{
+			return KErrorIllFormedInput;
+			}
+		++aUnicode;
+		++aUtf8;
+		}
+	if (startOfUnicode!=NULL)
+		{
+		*aUnicode='\0';
+		}
+	return aUnicode-startOfUnicode;
+	}
+#include <STDIO.H>
+int UnicodeToUtf8(char* aUtf8, const wchar_t* aUnicode)
+// must '\0'-terminate the output
+	{
+	char* startOfUtf8=aUtf8;
+	for (;;)
+		{
+		unsigned int currentUnicodeCharacter=*aUnicode;
+		if (currentUnicodeCharacter=='\0')
+			{
+			break;
+			}
+		if ((currentUnicodeCharacter&0xff80)==0x0000)
+			{
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)currentUnicodeCharacter;
+				}
+			}
+		else if ((currentUnicodeCharacter&0xf800)==0x0000)
+			{
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0xc0|(currentUnicodeCharacter>>6));
+				}
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
+				}
+			}
+		else if ((currentUnicodeCharacter&0xfc00)==0xd800)
+			{
+			currentUnicodeCharacter+=0x0040;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0xf0|((currentUnicodeCharacter>>8)&0x07));
+				}
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0x80|((currentUnicodeCharacter>>2)&0x3f));
+				}
+			{
+			unsigned int currentUtf8Byte=(0x80|((currentUnicodeCharacter&0x03)<<4));
+			++aUnicode;
+			currentUnicodeCharacter=*aUnicode;
+			if ((currentUnicodeCharacter&0xfc00)!=0xdc00)
+				{
+				return KErrorIllFormedInput;
+				}
+			currentUtf8Byte|=((currentUnicodeCharacter>>6)&0x0f);
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)currentUtf8Byte;
+				}
+			}
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
+				}
+			}
+		else
+			{
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0xe0|(currentUnicodeCharacter>>12));
+				}
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0x80|((currentUnicodeCharacter>>6)&0x3f));
+				}
+			++aUtf8;
+			if (startOfUtf8!=NULL)
+				{
+				*aUtf8=(char)(0x80|(currentUnicodeCharacter&0x3f));
+				}
+			}
+		++aUtf8;
+		++aUnicode;
+		}
+	if (startOfUtf8!=NULL)
+		{
+		*aUtf8='\0';
+		}
+	return aUtf8-startOfUtf8;
+	}
+