args.c

LINUX 下串口通信编程

#include <stdio.h>              /* printf */
#include <limits.h>             /* CHAR_MAX */
#include <getopt.h>             /* getopt_long */
#include <stdlib.h>             /* atoi */
#include <string.h>             /* strrchr */
#include <ctype.h>              /* toupper */

#include "vardef.h"
#include "args.h"

#define VERSION "0.03"

Arguments       args = {
    "serfile",                  /* program */
    "serutils",                 /* package */
    VERSION,                    /*version */
    "Paul Dean",                /* author */
    115200,                     /* baudrate */
    NULL,                       /* device */
    0,                          /* debug */
    0,                          /* echo */
    0,                          /* port */
    8,                          /* databit */
    "1",                        /* stopbit */
    'N'
};

void parse_arguments (int argc, char **argv)
{
    enum LONG_OPTIONS {
        ARG_HELP = CHAR_MAX + 1,
        ARG_VERSION
    };

    INT32           c;
    INT32           option_index = 0;
    static struct option long_options[] = {
        {"baudrate", required_argument, 0, 'b'},
        {"CS", required_argument, 0, 'c'},
        {"databit", required_argument, 0, 'c'},
        {"stopbit", required_argument, 0, 's'},
        {"device", required_argument, 0, 'd'},
        {"port", required_argument, 0, 'p'},
        {"parity", required_argument, 0, 'P'},
        {"DEBUG", no_argument, 0, 'D'},
        {"echo", no_argument, 0, 'e'},
        {"help", no_argument, 0, ARG_HELP},
        {"version", no_argument, 0, ARG_VERSION},
        {0, 0, 0, 0}
    };
    static const char *short_options = "b:c:d:p:s:P:De";
    while (-1 != (c = getopt_long (argc, argv, short_options, long_options,
                                   &option_index))) {
        switch (c) {
        case 0:
            break;
        case 'b':
            args.baudrate = atoi (optarg);
            break;
        case 'c':
            args.databit = atoi (optarg);
            break;
        case 'd':
            args.device = strrchr (optarg, 'S');
            if (NULL == args.device) {
                break;
            }
            args.device++;
            sscanf (args.device, "%d", &args.port);
            break;
        case 'p':
            args.port = atoi (optarg);
            break;
        case 's':
            args.stopbit = optarg;
            break;
        case 'P':
            args.parity = toupper (optarg[0]);
            break;
        case 'D':
            args.debug = 1;
            break;
        case 'e':
            args.echo = 1;
            break;
        case ARG_HELP:
            usage (0, args.program_name);
            break;
        case ARG_VERSION:
            version (stdout, args.program_name, args.package, args.version,
                     args.authors);
            break;
        default:
            break;
        }
    }
    if (argc <= optind) {
        usage (1, args.program_name);
    }
}

/* The name this program was run with. */
void usage (INT32 status, const char *program_name)
{
    if (status != 0)
        fprintf (stderr, "Try `%s --help' for more information.\n",
                 program_name);
    else {
        printf ("Usage: %s [OPTION]\n", program_name);
        printf ("Send files via serial port.\n\
\n\
  -b, --baudrate=BAUDRATE   set baudrate to BAUDRATE, default:115200\n\
  -c, --CS=DATABIT\n\
      --databit=DATABIT     set databit, 5, 6, 7, 8; default:8\n\
  -d, --device=DEVICE       set device to DEVICE, default: /dev/ttyS0 [COM1]\n\
                            if [--port] has been set, [--device] is ignored.\n\
  -p, --port=PORT           set port to PORT, default: 0 [COM1]\n\
  -P, --parity=PARITY       set parity to PARITY, 'N': no parity, 'E': even\n\
                            'O': odd, default: 'N'(no parity)\n\
  -s, --stopbit=STOPBIT     set stopbit, 1, 1.5, 2; default: 1\n\
  -D, --DEBUG               set debug mode\n\
  -e, --echo                set echo mode\n\
      -- help display this help and exit \n\
      -- version output version information and exit \n\
Examples:\n\
  %s -b 38400 --port 1 *.c --DEBUG\n\
  %s * --debug --device=/dev/ttyS0\n", program_name, program_name);
        puts ("\nReport bugs to <[e-mail]>.");
    }
    exit (status);
}

void version (FILE * stream, const char *program_name,
              const char *package, const char *version,
              const char *authors)
{
    char           *version_etc_copyright =
        _("Copyright (C) 2002 Paul Studio.");
    if (program_name)
        fprintf (stream, "%s (%s) %s\n", program_name, package, version);
    else
        fprintf (stream, "%s %s\n", package, version);
    fprintf (stream, _("Written by %s.\n"), authors);
    putc ('\n', stream);
    fputs (_(version_etc_copyright), stream);
    putc ('\n', stream);
    fputs (_("\
This is free software; see the source for copying conditions.  There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"), stream);
    exit (0);
}