109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
#pragma once
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#include <fc/iostream.hpp>
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#include <fc/shared_ptr.hpp>
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namespace fc {
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/**
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* Used to wrap references to other streams
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*/
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class ostream_wrapper : public ostream {
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public:
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template<typename Stream>
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ostream_wrapper( Stream& s )
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:my( new impl<Stream>(s) ){}
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virtual ~ostream_wrapper(){};
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virtual ostream& write( const char* buf, size_t len ) {
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my->write(buf,len);
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return *this;
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}
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virtual void close() {
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my->close();
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}
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virtual void flush() {
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my->flush();
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}
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protected:
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virtual ostream& write( const fc::string& s ) {
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return write( s.c_str(), s.size() );
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}
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struct impl_base : public fc::retainable {
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virtual void write( const char* buf, size_t len ) = 0;
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virtual void close() = 0;
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virtual void flush() = 0;
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};
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template<typename T>
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struct impl : public impl_base {
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impl(T& i):st(i){}
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virtual void write( const char* buf, size_t len ) {
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st.write(buf,len);
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}
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virtual void close() { st.close(); }
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virtual void flush() { st.flush(); }
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T& st;
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};
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fc::shared_ptr<impl_base> my;
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};
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/**
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* Used to wrap references to other streams
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*/
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class istream_wrapper : public istream {
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public:
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template<typename Stream>
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istream_wrapper( Stream& s )
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:my( new impl<Stream>(s) ){}
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virtual ~istream_wrapper(){};
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virtual size_t readsome( char* buf, size_t len ) { return my->readsome(buf,len); }
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virtual istream& read( char* buf, size_t len ) {
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my->read(buf,len);
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return *this;
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}
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virtual void close() { }
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virtual bool eof()const{ return my->eof(); }
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virtual istream& read( int64_t& ) { return *this; }
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virtual istream& read( uint64_t& ) { return *this; }
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virtual istream& read( int32_t& ) { return *this; }
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virtual istream& read( uint32_t& ) { return *this; }
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virtual istream& read( int16_t& ) { return *this; }
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virtual istream& read( uint16_t& ) { return *this; }
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virtual istream& read( int8_t& ) { return *this; }
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virtual istream& read( uint8_t& ) { return *this; }
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virtual istream& read( float& ) { return *this; }
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virtual istream& read( double& ) { return *this; }
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virtual istream& read( bool& ) { return *this; }
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virtual istream& read( char& ) { return *this; }
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virtual istream& read( fc::string& ) { return *this; }
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protected:
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struct impl_base : public fc::retainable {
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virtual void read( char* buf, size_t len ) = 0;
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virtual size_t readsome( char* buf, size_t len ) = 0;
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virtual bool eof()const;
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};
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template<typename T>
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struct impl : public impl_base {
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impl(T& i):st(i){}
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virtual size_t readsome( char* buf, size_t len ) { return st.readsome(buf,len); }
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virtual void read( char* buf, size_t len ) {
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st.read(buf,len);
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}
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virtual bool eof()const { return st.eof(); }
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T& st;
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};
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fc::shared_ptr<impl_base> my;
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};
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} // namespace fc
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