static gboolean parser_read_icb( SimExec *sim ) {
  SimExec *sim;
  char buf[64] = “”, *str;
  gsize bytes_read = 0, curpos, endpos;
  ScenarioStream *ss = NULL;

  g_return_val_if_fail( IS_SIM_EXEC(sim), FALSE );

  ss = sim->priv->parser;

  g_return_val_if_fail( sim->priv->output_fp, FALSE );

  clearerr( sim->priv->output_fp );
  if( sim->priv->status == SIM_EXEC_RUNNING ) {
    curpos = ftell( sim->priv->output_fp );
    fseek( sim->priv->output_fp, 0, SEEK_END );
    endpos = ftell( sim->priv->output_fp );
    fseek( sim->priv->output_fp, curpos, SEEK_SET );
    if( endpos - curpos priv->output_fp );
  bytes_read = fread( buf, 1, sizeof(buf), sim->priv->output_fp );
  if( bytes_read priv->output_fp ) ||
			  ferror( sim->priv->output_fp )) ) {
    if( sim->priv->status != SIM_EXEC_RUNNING ) {
      fclose( sim->priv->output_fp );
      sim->priv->output_fp = NULL;
      return( FALSE );
    }
  } else if( bytes_read > 0 ) {
    for( str = buf; *str; str++ )
      if( *str == ‘\\n’ )
	ss->lineno++;
    ss->pspool =
      sxml_parse( ss->pspool, &ss->pslen, buf, bytes_read,
                  (SXMLStartTagFunc)stream_start,
                  (SXMLEndTagFunc)stream_end,
                  (SXMLCharsFunc)scenario_chars, ss );
  }
  return( TRUE );
}