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// **********************************************************************
//
// Copyright (c) 2003-2009 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.
//
// **********************************************************************
#ifndef ICE_STRING_CONVERTER_H
#define ICE_STRING_CONVERTER_H
#include <Ice/Config.h>
#include <Ice/CommunicatorF.h>
#include <Ice/Plugin.h>
#include <IceUtil/Exception.h>
#include <IceUtil/Shared.h>
#include <IceUtil/Handle.h>
#include <IceUtil/Unicode.h>
#include <string>
namespace Ice
{
//
// Provides bytes to toUTF8. Raises MemoryLimitException when too many
// bytes are requested.
//
class ICE_API UTF8Buffer
{
public:
virtual Byte* getMoreBytes(size_t howMany, Byte* firstUnused) = 0;
virtual ~UTF8Buffer() {}
};
//
// A StringConverter converts narrow or wide-strings to and from UTF-8 byte sequences.
// It's used by the communicator during marshaling (toUTF8) and unmarshaling (fromUTF8).
// It report errors by raising StringConversionFailed or MemoryLimitException.
//
template<typename charT>
class BasicStringConverter : public IceUtil::Shared
{
public:
//
// Returns a pointer to byte after the last written byte (which may be
// past the last byte returned by getMoreBytes).
//
virtual Byte* toUTF8(const charT* sourceStart, const charT* sourceEnd,
UTF8Buffer&) const = 0;
//
// Unmarshals a UTF-8 sequence into a basic_string
//
virtual void fromUTF8(const Byte* sourceStart, const Byte* sourceEnd,
std::basic_string<charT>& target) const = 0;
};
typedef BasicStringConverter<char> StringConverter;
typedef IceUtil::Handle<StringConverter> StringConverterPtr;
typedef BasicStringConverter<wchar_t> WstringConverter;
typedef IceUtil::Handle<WstringConverter> WstringConverterPtr;
//
// Converts to and from UTF-16 or UTF-32 depending on sizeof(wchar_t)
//
class ICE_API UnicodeWstringConverter : public WstringConverter
{
public:
UnicodeWstringConverter(IceUtil::ConversionFlags = IceUtil::lenientConversion);
virtual Byte* toUTF8(const wchar_t*, const wchar_t*, UTF8Buffer&) const;
virtual void fromUTF8(const Byte*, const Byte*, std::wstring&) const;
private:
const IceUtil::ConversionFlags _conversionFlags;
};
#ifdef _WIN32
//
// Converts to/from UTF-8 using MultiByteToWideChar and WideCharToMultiByte
//
class ICE_API WindowsStringConverter : public StringConverter
{
public:
explicit WindowsStringConverter(unsigned int);
virtual Byte* toUTF8(const char*, const char*, UTF8Buffer&) const;
virtual void fromUTF8(const Byte*, const Byte*, std::string& target) const;
private:
unsigned int _cp;
UnicodeWstringConverter _unicodeWstringConverter;
};
#endif
//
// A special plugin that sets stringConverter and wstringConverter during
// construction (when the provided stringConverter resp. wstringConverter
// are not null). Both initialize and destroy are no-op. See Ice::InitializationData.
//
class ICE_API StringConverterPlugin : public Ice::Plugin
{
public:
StringConverterPlugin(const CommunicatorPtr& communicator,
const StringConverterPtr&, const WstringConverterPtr& = 0);
virtual void initialize();
virtual void destroy();
};
}
#endif
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