C++ std::streambuf类代码示例

void StarsNode::unpackState(std::streambuf & in) {
    uint32_t size;
    in.sgetn((char *)&size, 4);
    msgpack::unpacker upk;
    upk.reserve_buffer(size);
    in.sgetn(upk.buffer(), size);
    upk.buffer_consumed(size);
    MsgpackInArchive ar(upk);
    ar & power & mem & disk & static_cast<SimOverlayBranch &>(getBranch()) & static_cast<SimOverlayLeaf &>(getLeaf());
    switch (Configuration::getInstance().getPolicy()) {
        case Configuration::IBPolicy:
            static_cast<IBPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::MMPolicy:
            static_cast<MMPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::DPolicy:
            static_cast<DPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::FSPolicy:
            static_cast<FSPDispatcher &>(getDisp()).serializeState(ar);
            break;
        default:
            break;
    }
}

	std::streambuf::int_type SolidusEscaper::operator()(std::streambuf &destination,
	                                                    std::streambuf::int_type character) {
		bool notEscaped = true;
		std::streambuf::char_type tmpChar = std::streambuf::traits_type::to_char_type(character);

		// If we encounter a quotation mark.
		if (tmpChar == Strings::Json::Escape::QUOTATION_MARK) {
			// If we're not in a string, we change that. If we're in a string,
			// we change that only if we're not after an escape back slash.
			inString = !inString || (afterBackSlash);

		} else if (inString && !afterBackSlash) {
			// If we are in a string definition and we're not after a backslash
			// escape.
			if (tmpChar == Strings::Std::SOLIDUS) {
				destination.sputn(Strings::Json::SOLIDUS.c_str(), Strings::Json::SOLIDUS.size());
				notEscaped = false;

			}

		}

		// We determine if we start a backslash escape or not.
		afterBackSlash = inString && !afterBackSlash && (tmpChar == Strings::Json::Escape::BEGIN_ESCAPE);
		return (notEscaped) ? (destination.sputc(tmpChar)) : (0);
	}

void StarsNode::packState(std::streambuf & out) {
    msgpack::sbuffer buffer;
    msgpack::packer<msgpack::sbuffer> pk(&buffer);
    MsgpackOutArchive ar(pk);
    ar & power & mem & disk & static_cast<SimOverlayBranch &>(getBranch()) & static_cast<SimOverlayLeaf &>(getLeaf());
    switch (Configuration::getInstance().getPolicy()) {
        case Configuration::IBPolicy:
            static_cast<IBPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::MMPolicy:
            static_cast<MMPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::DPolicy:
            static_cast<DPDispatcher &>(getDisp()).serializeState(ar);
            break;
        case Configuration::FSPolicy:
            static_cast<FSPDispatcher &>(getDisp()).serializeState(ar);
            break;
        default:
            break;
    }
    uint32_t size = buffer.size();
    out.sputn((const char *)&size, 4);
    out.sputn(buffer.data(), size);
}

    static std::string parseXMLIdentifier(std::streambuf& buffer)
    {
        std::stringstream identifier;
        {
            char c=buffer.sgetc();
            if((c<'A' || c>'Z') && (c<'a' || c>'z'))
            {
                throw XMLParseException();
            }
            buffer.snextc();
            identifier<<c;
        }
        for(;;)
        {
            char c=buffer.sgetc();
            if((c<'0' || c>'9') && (c<'A' || c>'Z') && (c<'a' || c>'z'))
            {
                break;
            }
            buffer.snextc();
            identifier<<c;
        }
        return identifier.str();

    }

 static void parseXMLSkipSpace(std::streambuf& buffer)
 {
     while(buffer.sgetc()==' ' || buffer.sgetc()=='\n' || buffer.sgetc()=='\r')
     {
         buffer.snextc();
     }
 }

/**
   read whole contents of streambuf 'buf'

   \return size of data malloced and copied into \param[out] buffer unless size
   is 0 (in which case buffer is set to NULL for convenience, so you can blindly free)

   requires put pointer is at end for determining size (e.g. just-written iostream)
*/
inline std::size_t read_streambuf_malloc(std::streambuf& buf, void*& buffer) {
  typedef std::streambuf::pos_type Pos;
  typedef std::streambuf::off_type Off;
  Pos sz = buf.pubseekoff(0, std::ios::end, std::ios_base::out);
  if (sz > 0 && seek_ok(sz) && seek_ok(buf.pubseekpos(0, std::ios_base::in)))
    return buf.sgetn((char*)(buffer = std::malloc(sz)), sz);
  else {
    buffer = 0;
    return 0;
  }
}

	std::streambuf::int_type Indenter::operator()(std::streambuf &destination,
	                                              std::streambuf::int_type character) {
		std::streambuf::char_type tmpChar = std::streambuf::traits_type::to_char_type(character);

		if (atStartOfLine && tmpChar != Whitespace::NEW_LINE) {
			destination.sputc(Whitespace::HORIZONTAL_TAB);
		}

		atStartOfLine = (tmpChar == Whitespace::NEW_LINE);
		return destination.sputc(tmpChar);
	}

    std::size_t HeaderParser::advance(std::streambuf& sb)
    {
        std::size_t ret = 0;

        while (sb.in_avail() > 0)
        {
            ++ret;
            if (parse(sb.sbumpc()))
                return ret;
        }

        return ret;
    }

    virtual std::streampos seekoff (std::streamoff off, std::ios_base::seekdir way,
                   std::ios_base::openmode which = std::ios_base::in)
    {
        std::streamoff newpos;
        if ( way == std::ios_base::beg )
        {
            newpos = off;
        }
        else if ( way == std::ios_base::cur )
        {
            newpos = _curPos + off;
        }
        else if ( way == std::ios_base::end )
        {
            newpos = _numChars + off;
        }
        else
        {
            return -1;
        }

        if ( newpos<0 || newpos>_numChars ) return -1;
        if ( ARCHIVE_POS(_streambuf->pubseekpos( STREAM_POS(_startPos+newpos), which)) < 0 ) return -1;
        _curPos = newpos;
        return _curPos;
    }

 XMLNode_SPtr parseXML(std::streambuf& buffer)
 {
     std::cout<<"Parse Start"<<std::endl;
     parseXMLSkipSpace(buffer);
     char c=buffer.sgetc();
     if(c=='<')
     {
         buffer.snextc();
         std::cout<<"Parse Node"<<std::endl;
         XMLNode_SPtr current=parseXMLNode(buffer);
         std::cout<<"Something"<<std::endl;
         return current;
     }
     std::cout<<"Nothing"<<std::endl;
     return XMLNode_SPtr();
 }

Ttamanio Bloque::serializar(std::streambuf&salida)const{
	unsigned char nrocomponetes=componentes.size();
	Ttamanio offset=sizeof(unsigned char);
	salida.sputn((char*)&nrocomponetes,offset);
	for(Ttamanio i=0;i<nrocomponetes;i++){
		offset+=componentes.at(i)->serializar(salida);
	}
	return offset;
}

 int operator()(std::streambuf& sbuf, int c)
 {
     int result = eof();
     if (c != eof() && new_line)
     {
         std::ostream(&sbuf) << ++line_number << ": ";
     }
     new_line = (c == '\n');
     
     return result != eof() ? result : sbuf.sputc(c);
 }

// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
bool t_single_scenario_campaign_file_header::read(
	std::streambuf &		stream,
	t_progress_handler *	progress_handler_ptr )
{
	m_map_data_start = stream.pubseekoff( 0, std::ios::cur );
	m_map_data_end = stream.pubseekoff( 0, std::ios::end );
	stream.pubseekpos( m_map_data_start );

	try
	{
		t_inflate_filter inflater( stream );
		if ( !::read( inflater, *m_map_header_ptr, progress_handler_ptr ) ) 
			return false;
	}
	catch ( t_inflate_filter::t_data_error const & )
	{
		return false;
	}
	return true;
}

//////////////////////////////////////////////////////////////////////////////
// STATIC
void
read(std::streambuf & istrm, void * dataIn, size_t dataInLen)
{
	std::streamsize cnt = dataInLen;
#ifdef BLOCXX_WIN32
// VC10 warns that sgetn is unsafe.
#pragma warning(push)
#pragma warning(disable:4996)
#endif
	if (istrm.sgetn(static_cast<char *>(dataIn), cnt) != cnt)
#ifdef BLOCXX_WIN32
#pragma warning(pop)
#endif
	{
		BLOCXX_THROW(IOException, "Failed reading data");
	}
}

	std::streambuf::int_type Escaper::operator()(std::streambuf &destination,
	                                             std::streambuf::int_type character) {
		bool notEscaped = true;
		std::streambuf::char_type tmpChar = std::streambuf::traits_type::to_char_type(character);

		// If we encounter a quotation mark.
		if (tmpChar == Structural::BEGIN_END_STRING) {
			// If we're not in a string, we change that. If we're in a string,
			// we change that only if we're not after an escape back slash.
			inString = !inString || (afterBackSlash);

		} else if (inString && !afterBackSlash) {
			// If we are in a string definition and we're not after a backslash
			// escape.
			if (tmpChar == Strings::Std::REVERSE_SOLIDUS) {
				destination.sputn(Strings::Json::REVERSE_SOLIDUS.c_str(), Strings::Json::REVERSE_SOLIDUS.size());
				notEscaped = false;

			} else if (tmpChar == Strings::Std::BACKSPACE) {
				destination.sputn(Strings::Json::BACKSPACE.c_str(), Strings::Json::BACKSPACE.size());
				notEscaped = false;

			} else if (tmpChar == Strings::Std::FORM_FEED) {
				destination.sputn(Strings::Json::FORM_FEED.c_str(), Strings::Json::FORM_FEED.size());
				notEscaped = false;

			} else if (tmpChar == Strings::Std::LINE_FEED) {
				destination.sputn(Strings::Json::LINE_FEED.c_str(), Strings::Json::LINE_FEED.size());
				notEscaped = false;

			} else if (tmpChar == Strings::Std::TAB) {
				destination.sputn(Strings::Json::TAB.c_str(), Strings::Json::TAB.size());
				notEscaped = false;

			} else if (tmpChar >= '\0' && tmpChar <= '\x1f') {
				std::string tmp(Value::escapeToUnicode(tmpChar));
				destination.sputn(tmp.c_str(), tmp.size());
				notEscaped = false;
			}

		}

		// We determine if we start a backslash escape or not.
		afterBackSlash = inString && !afterBackSlash && (tmpChar == Strings::Json::Escape::BEGIN_ESCAPE);
		return (notEscaped) ? (destination.sputc(tmpChar)) : (0);
	}