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Finally took my own advice on how to write custom streams :)

Browse source 
See http://www.jezuk.co.uk/accu2005/stream-a-poloza/html/ from about slide 30
This commit is contained in:
jez_higgins 2005-11-22 12:57:45 +00:00
parent 9bc4f06dfb
commit 134b343711
1 changed files with 26 additions and 12 deletions
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38
Utils/socket_stream.h
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@ -335,7 +335,24 @@ int basic_socketbuf<charT, traitsT>::closeSocket(int sock) const
///////////////////////////////////////////////////////////
// basic_socketstream declaration
template<class charT, class traitsT>
class basic_socketstream : public std::basic_iostream<charT, traitsT>
class socketstreambuf_init
{
public:
typedef basic_socketbuf<charT, traitsT> sockbuf;
sockbuf* buf() const
{
return &buf_;
} // buf()
private:
mutable sockbuf buf_;
}; // class socketstreambuf_init
template<class charT, class traitsT>
class basic_socketstream :
private virtual socketstreambuf_init<charT, traitsT>,
public std::basic_iostream<charT, traitsT>
{
public:
#ifndef ARABICA_VS6_WORKAROUND
@ -352,25 +369,22 @@ class basic_socketstream : public std::basic_iostream<charT, traitsT>
bool is_open() const;
void open(const char* hostname, unsigned short port);
void close();
private:
basic_socketbuf<charT, traitsT> sockbuf;
}; // class basic_socketstream
////////////////////////////////////////////////////////////////
// basic_socketstream definition
template<class charT, class traitsT>
basic_socketstream<charT, traitsT>::basic_socketstream() :
std::basic_iostream<charT, traitsT>( 0 )
socketstreambuf_init<charT, traitsT>(),
std::basic_iostream<charT, traitsT>(socketstreambuf_init<charT, traitsT>::buf())
{
init( &sockbuf );
} // basic_socketstream
template<class charT, class traitsT>
basic_socketstream<charT, traitsT>::basic_socketstream(const char* hostname, int port) :
std::basic_iostream<charT, traitsT>( 0 )
socketstreambuf_init<charT, traitsT>(),
std::basic_iostream<charT, traitsT>(socketstreambuf_init<charT, traitsT>::buf())
{
init( &sockbuf );
open(hostname, port);
} // basic_socketstream
@ -382,19 +396,19 @@ basic_socketstream<charT, traitsT>::~basic_socketstream()
template<class charT, class traitsT>
basic_socketbuf<charT, traitsT>* basic_socketstream<charT, traitsT>::rdbuf() const
{
return const_cast<basic_socketbuf<charT, traitsT>* >(&sockbuf);
return socketstreambuf_init<charT, traitsT>::buf();
} // rdbuf
template<class charT, class traitsT>
bool basic_socketstream<charT, traitsT>::is_open() const
{
return sockbuf.is_open();
return socketstreambuf_init<charT, traitsT>::buf()->is_open();
} // is_open
template<class charT, class traitsT>
void basic_socketstream<charT, traitsT>::open(const char* hostname, unsigned short port)
{
if(sockbuf.open(hostname, port) == 0)
if(socketstreambuf_init<charT, traitsT>::buf()->open(hostname, port) == 0)
setstate(badbit);
} // open
@ -404,7 +418,7 @@ void basic_socketstream<charT, traitsT>::close()
if(!is_open())
return;
if(sockbuf.close() == 0)
if(socketstreambuf_init<charT, traitsT>::buf()->close() == 0)
setstate(badbit);
} // close