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/* vxi11_cmd.c
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 * Copyright (C) 2006 Steve D. Sharples
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 *
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 * A simple interactive utility that allows you to send commands and queries to
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 * a device enabled with the VXI11 RPC ethernet protocol. Uses the files
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 * generated by rpcgen vxi11.x, and the vxi11_user.h user libraries.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
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 *
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 * The author's email address is steve.sharples@nottingham.ac.uk
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 */
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#include "vxi11_user.h"
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#define BUF_LEN 100000
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int     main(int argc, char *argv[]) {
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static char     *device_ip;
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static char     *device_name;
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char            cmd[256];
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char            buf[BUF_LEN];
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int             ret;
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long            bytes_returned;
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CLINK           *clink;
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        clink = new CLINK;
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        if (argc < 2) {
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                printf("usage: %s your.inst.ip.addr [device_name]\n",argv[0]);
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                exit(1);
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                }
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        device_ip = argv[1];
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        if (argc > 2) {
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                device_name = argv[2];
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                ret=vxi11_open_device(device_ip,clink,device_name);
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                }
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        else {
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                ret=vxi11_open_device(device_ip,clink);
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                }
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        if (ret != 0) {
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                printf("Error: could not open device %s, quitting\n",device_ip);
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                exit(2);
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                }
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        while(1){
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                memset(cmd, 0, 256);            // initialize command string
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                memset(buf, 0, BUF_LEN);        // initialize buffer
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                printf("Input command or query ('q' to exit): ");
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                fgets(cmd,256,stdin);
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                cmd[strlen(cmd)-1] = 0;         // just gets rid of the \n
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                if (strncasecmp(cmd, "q",1) == 0) break;
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                if (vxi11_send(clink, cmd) < 0) break;
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                if (strstr(cmd, "?") != 0) {
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                        bytes_returned = vxi11_receive(clink, buf, BUF_LEN);
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                        if (bytes_returned > 0) {
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                                printf("%s\n",buf);
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                                }
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                        else if (bytes_returned == -15) {
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                                printf("*** [ NOTHING RECEIVED ] ***\n");
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                                }
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                        else    break;
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                        }
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                }
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        ret=vxi11_close_device(device_ip,clink);
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        return 0;
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        }
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