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#include "LibFetchRewindInputStream.hpp"
#include "SpoolRewindInputStream.hpp"
using namespace std;
class libfetch_buffer : public spool_streambuf
{
public:
explicit libfetch_buffer( fetchIO *io, size_t bufSize = 256, size_t putBack = 1, size_t spoolBufSize = 8192 );
protected:
virtual streambuf::int_type readFromSource( );
private:
fetchIO *m_io;
};
libfetch_buffer::libfetch_buffer( fetchIO *io, size_t bufSize, size_t putBack, size_t spoolBufSize )
: spool_streambuf( bufSize, putBack, spoolBufSize ), m_io( io )
{
}
streambuf::int_type libfetch_buffer::readFromSource( )
{
ssize_t n;
n = fetchIO_read( m_io, m_start, m_buf.size( ) - ( m_start - m_base ) );
if( n == 0 ) {
return traits_type::eof( );
} else if( n < 0 ) {
// TODO handle error
}
return n;
}
LibFetchRewindInputStream::LibFetchRewindInputStream( const URL &url )
: SpoolRewindInputStream( url ), m_io( 0 )
{
m_io = fetchGetURL( url.str( ).c_str( ), "" );
if( m_io == NULL ) {
setstate( badbit );
return;
}
m_buf = new libfetch_buffer( m_io );
rdbuf( m_buf );
}
LibFetchRewindInputStream::~LibFetchRewindInputStream( )
{
if( m_buf ) delete m_buf;
if( m_io ) fetchIO_close( m_io );
}
string LibFetchRewindInputStream::lastErrMsg( ) const
{
return fetchLastErrString;
}
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