int __fill_buffer( FILE *fp )
{
if( _FP_BASE( fp ) == NULL ) {
__ioalloc( fp );
}
if( fp->_flag & _ISTTY ) { /* 20-aug-90 */
if( fp->_flag & (_IONBF | _IOLBF) ) {
__flushall( _ISTTY ); /* flush all TTY output */
}
}
fp->_flag &= ~_UNGET; /* 10-mar-90 */
fp->_ptr = _FP_BASE( fp );
#ifdef __UNIX__
fp->_cnt = __qread( fileno( fp ), fp->_ptr,
(fp->_flag & _IONBF) ? 1 : fp->_bufsize );
#else
if(( fp->_flag & (_IONBF | _ISTTY)) == (_IONBF | _ISTTY) &&
( fileno( fp ) == STDIN_FILENO ))
{
int c; /* JBS 31-may-91 */
fp->_cnt = 0;
c = getche();
if( c != EOF ) {
*fp->_ptr = c;
fp->_cnt = 1;
}
} else {
fp->_cnt = __qread( fileno( fp ), fp->_ptr,
(fp->_flag & _IONBF) ? 1 : fp->_bufsize );
}
#endif
if( fp->_cnt <= 0 ) {
if( fp->_cnt == 0 ) {
fp->_flag |= _EOF;
} else {
fp->_flag |= _SFERR;
fp->_cnt = 0;
}
}
return( fp->_cnt );
}
_WCRTLINK int flushall( void )
{
return( __flushall( ~0 ) );
}
