log4cxx/helpers/transcoder.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _LOG4CXX_HELPERS_TRANSCODER_H
#define _LOG4CXX_HELPERS_TRANSCODER_H
 
#include <log4cxx/logstring.h>
 
 
namespace LOG4CXX_NS
{
namespace helpers
{
class ByteBuffer;
class LOG4CXX_EXPORT Transcoder
{
    public:
        static void decodeUTF8(const std::string& src, LogString& dst);
        static void encodeUTF8(const LogString& src, std::string& dst);
        static void encodeUTF8(unsigned int sv, ByteBuffer& dst);
        static void encodeUTF16LE(unsigned int sv, ByteBuffer& dst);
        static void encodeUTF16BE(unsigned int sv, ByteBuffer& dst);
 

        static unsigned int decode(const std::string& str,
            std::string::const_iterator& iter);

        static unsigned int getCodePoint(const std::string& str, std::string::const_iterator& pCodePoint);

        static void encode(unsigned int ch, std::string& dst);

        static bool hasReplacementCharacter(const std::string& str);

        static void decode(const std::string& src, LogString& dst);

        static void encode(const LogString& src, std::string& dst);
 
 
 
#if LOG4CXX_WCHAR_T_API || LOG4CXX_LOGCHAR_IS_WCHAR || defined(WIN32) || defined(_WIN32)
        static void decode(const std::wstring& src, LogString& dst);
        static void encode(const LogString& src, std::wstring& dst);
        static unsigned int decode(const std::wstring& str,
            std::wstring::const_iterator& iter);

        static unsigned int getCodePoint(const std::wstring& str, std::wstring::const_iterator& pCodePoint);

        static void encode(unsigned int ch, std::wstring& dst);

        static bool hasReplacementCharacter(const std::wstring& str);
#endif
 
#if LOG4CXX_CFSTRING_API
        static void decode(const CFStringRef& src, LogString& dst);
        static CFStringRef encode(const LogString& src);
#endif
 
        enum { LOSSCHAR = 0xFFFD }; // Unicode replacement character
        static logchar decode(char ch);
        static LogString decode(const char* str);

        static std::string encodeCharsetName(const LogString& charsetName);
 
    private:
        Transcoder();
        Transcoder(const Transcoder&);
        Transcoder& operator=(const Transcoder&);
};
}
}
 
#if LOG4CXX_CHARSET_UTF8 && LOG4CXX_LOGCHAR_IS_UTF8
#define LOG4CXX_ENCODE_CHAR(var, src) \
    const std::string& var = src

#define LOG4CXX_DECODE_CHAR(var, src) \
    const LOG4CXX_NS::LogString& var = src
 
#else
#define LOG4CXX_ENCODE_CHAR(var, src) \
    std::string var;                      \
    LOG4CXX_NS::helpers::Transcoder::encode(src, var)

#define LOG4CXX_DECODE_CHAR(var, src) \
    LOG4CXX_NS::LogString var;                      \
    LOG4CXX_NS::helpers::Transcoder::decode(src, var)
#endif

#define LOG4CXX_DECODE_CFSTRING(var, src) \
    LOG4CXX_NS::LogString var;                      \
    LOG4CXX_NS::helpers::Transcoder::decode(src, var)

#define LOG4CXX_ENCODE_CFSTRING(var, src) \
    CFStringRef var = LOG4CXX_NS::helpers::Transcoder::encode(src)
 
#if LOG4CXX_LOGCHAR_IS_WCHAR
#define LOG4CXX_ENCODE_WCHAR(var, src) \
    const std::wstring& var = src

#define LOG4CXX_DECODE_WCHAR(var, src) \
    const LOG4CXX_NS::LogString& var = src
 
#else
#define LOG4CXX_ENCODE_WCHAR(var, src) \
    std::wstring var;                      \
    LOG4CXX_NS::helpers::Transcoder::encode(src, var)

#define LOG4CXX_DECODE_WCHAR(var, src) \
    LOG4CXX_NS::LogString var;                      \
    LOG4CXX_NS::helpers::Transcoder::decode(src, var)
 
#endif
 
#endif //_LOG4CXX_HELPERS_TRANSCODER_H