/*------------------------------------------------------------------------- * Filename:      command.c * Version:       $Id: command.c,v 1.4 1999/10/03 22:03:52 erikm Exp $ * Copyright:     Copyright (C) 1999, Erik Mouw * Author:        Erik Mouw <J.A.K.Mouw@its.tudelft.nl> * Description:   Command line functions for blob * Created at:    Sun Aug 29 17:23:40 1999 * Modified by:   Erik Mouw <J.A.K.Mouw@its.tudelft.nl> * Modified at:   Sun Oct  3 21:08:27 1999 *-----------------------------------------------------------------------*//* * command.c: Command line functions for blob * * Copyright (C) 1999  Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * */#ident "$Id: command.c,v 1.4 1999/10/03 22:03:52 erikm Exp $"#ifdef HAVE_CONFIG_H# include "config.h"#endif#include "command.h"#include "serial.h"#include "time.h"#include "types.h"/* display a prompt, or the standard prompt if prompt == NULL */void DisplayPrompt(char *prompt){	if(prompt == NULL) {		SerialOutputString(PACKAGE "> ");	} else {		SerialOutputString(prompt);	}}/* more or less like SerialInputString(), but with echo and backspace  */int GetCommand(char *command, int len, int timeout){	u32 startTime, currentTime;	char c;	int i;	int numRead;	int maxRead = len - 1;		startTime = TimerGetTime();	for(numRead = 0, i = 0; numRead < maxRead;) {		/* try to get a byte from the serial port */		while(!SerialInputByte(&c)) {			currentTime = TimerGetTime();			/* check timeout value */			if((currentTime - startTime) > 			   (timeout * TICKS_PER_SECOND)) {				/* timeout */				command[i++] = '\0';				return(numRead);			}		}		if((c == '\r') || (c == '\n')) {			command[i++] = '\0';			/* print newline */			SerialOutputByte('\r');			return(numRead);		} else if(c == '\b') { /* FIXME: is this backspace? */			if(i > 0) {				i--;				numRead--;				/* cursor one position back. */				SerialOutputString("\b \b");			}		} else {			command[i++] = c;			numRead++;			/* print character */			SerialOutputByte(c);		}	}	return(numRead);}