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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/StringConverter.h>
#include <IceUtil/IceUtil.h>
#include <IceUtil/StringUtil.h>
#include <IceUtil/ScopedArray.h>
#include <Ice/LocalException.h>
using namespace IceUtil;
using namespace IceUtilInternal;
using namespace std;
namespace Ice
{
Byte*
UnicodeWstringConverter::toUTF8(const wchar_t* sourceStart,
const wchar_t* sourceEnd,
UTF8Buffer& buffer) const
{
//
// The "chunk size" is the maximum of the number of characters in the
// source and 6 (== max bytes necessary to encode one Unicode character).
//
size_t chunkSize = std::max<size_t>(static_cast<size_t>(sourceEnd - sourceStart), 6);
Byte* targetStart = buffer.getMoreBytes(chunkSize, 0);
Byte* targetEnd = targetStart + chunkSize;
ConversionResult result;
while((result =
convertUTFWstringToUTF8(sourceStart, sourceEnd,
targetStart, targetEnd, lenientConversion))
== targetExhausted)
{
targetStart = buffer.getMoreBytes(chunkSize, targetStart);
targetEnd = targetStart + chunkSize;
}
switch(result)
{
case conversionOK:
break;
case sourceExhausted:
throw StringConversionException(__FILE__, __LINE__, "wide string source exhausted");
case sourceIllegal:
throw StringConversionException(__FILE__, __LINE__, "wide string source illegal");
default:
{
assert(0);
throw StringConversionException(__FILE__, __LINE__);
}
}
return targetStart;
}
void
UnicodeWstringConverter::fromUTF8(const Byte* sourceStart, const Byte* sourceEnd,
wstring& target) const
{
if(sourceStart == sourceEnd)
{
target = L"";
return;
}
ConversionResult result =
convertUTF8ToUTFWstring(sourceStart, sourceEnd, target, lenientConversion);
switch(result)
{
case conversionOK:
break;
case sourceExhausted:
throw StringConversionException(__FILE__, __LINE__, "UTF-8 string source exhausted");
case sourceIllegal:
throw StringConversionException(__FILE__, __LINE__, "UTF-8 string source illegal");
default:
{
assert(0);
throw StringConversionException(__FILE__, __LINE__);
}
}
}
#ifdef _WIN32
WindowsStringConverter::WindowsStringConverter(unsigned int cp) :
_cp(cp)
{
}
Byte*
WindowsStringConverter::toUTF8(const char* sourceStart,
const char* sourceEnd,
UTF8Buffer& buffer) const
{
//
// First convert to UTF-16
//
int sourceSize = sourceEnd - sourceStart;
if(sourceSize == 0)
{
return buffer.getMoreBytes(1, 0);
}
size_t size = 0;
int writtenWchar = 0;
ScopedArray<wchar_t> wbuffer;
do
{
size = size == 0 ? static_cast<size_t>(sourceSize) + 2 : 2 * size;
wbuffer.reset(new wchar_t[size]);
writtenWchar = MultiByteToWideChar(_cp, MB_ERR_INVALID_CHARS, sourceStart,
sourceSize, wbuffer.get(), size);
} while(writtenWchar == 0 && GetLastError() == ERROR_INSUFFICIENT_BUFFER);
if(writtenWchar == 0)
{
throw StringConversionException(__FILE__, __LINE__, IceUtilInternal::lastErrorToString());
}
//
// Then convert this UTF-16 wbuffer into UTF-8
//
return _unicodeWstringConverter.toUTF8(wbuffer.get(), wbuffer.get() + writtenWchar, buffer);
}
void
WindowsStringConverter::fromUTF8(const Byte* sourceStart, const Byte* sourceEnd,
string& target) const
{
if(sourceStart == sourceEnd)
{
target = "";
return;
}
//
// First convert to wstring (UTF-16)
//
wstring wtarget;
_unicodeWstringConverter.fromUTF8(sourceStart, sourceEnd, wtarget);
//
// And then to a multi-byte narrow string
//
size_t size = 0;
int writtenChar = 0;
ScopedArray<char> buffer;
do
{
size = size == 0 ? static_cast<size_t>(sourceEnd - sourceStart) + 2 : 2 * size;
buffer.reset(new char[size]);
writtenChar = WideCharToMultiByte(_cp, 0, wtarget.data(), wtarget.size(),
buffer.get(), size, 0, 0);
} while(writtenChar == 0 && GetLastError() == ERROR_INSUFFICIENT_BUFFER);
if(writtenChar == 0)
{
throw StringConversionException(__FILE__, __LINE__, IceUtilInternal::lastErrorToString());
}
target.assign(buffer.get(), writtenChar);
}
#endif
}
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