int strstreambuf::overflow( int c ) {
__lock_it( __b_lock );
if( !__dynamic ) {
return( EOF );
}
if( __unlimited ) {
// adjust end pointer
int offset = out_waiting();
setp( pbase(), epptr() + DEFAULT_MAINBUF_SIZE );
pbump( offset );
return( __NOT_EOF );
}
// Use doallocate() because streambuf::allocate() will not grow an
// existing buffer the way strstreambuf needs to
if( doallocate() == EOF ) {
return( EOF );
}
if( c != EOF ) {
*pptr() = (char)c;
pbump( 1 );
}
return( __NOT_EOF );
}
int allocate() {
if (base() || unbuffered()) return 0;
else return doallocate(); }
void streambuf::doallocbuf()
{
if (base() || (!unbuffered() && doallocate() != EOF)) return;
setb(_shortbuf, _shortbuf+1, 0);
}
