args.c

linux下的一个串口调试程序的源代码

#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 "types.h"
#include "args.h"

static void     usage (INT32 status, const char *program_name, int eargc);
static void     version (FILE * stream, const P_PACKAGE_INFO pPkgInfo);

void parse_arguments (int argc, char **argv, int eargc,
                      P_PACKAGE_INFO pPkgInfo, P_PORT_INFO pPortInfo)
{
    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'},
        {"debug", no_argument, 0, 'd'},
        {"echo", no_argument, 0, 'e'},
        {"flowcontrol", required_argument, 0, 'f'},
        {"tty", required_argument, 0, 't'},
        {"stopbit", required_argument, 0, 's'},
        {"parity", required_argument, 0, 'p'},
        {"help", no_argument, 0, ARG_HELP},
        {"version", no_argument, 0, ARG_VERSION},
        {0, 0, 0, 0}
    };

    static const char *short_options = "b:c:def:p:s:t:";
    while (-1 != (c = getopt_long (argc, argv, short_options, long_options,
                                   &option_index))) {
        switch (c) {
        case 0:
            break;
        case 'b':
            pPortInfo->baudrate = atoi (optarg);
            break;
        case 'c':
            pPortInfo->databit = atoi (optarg);
            break;
        case 'd':
            pPortInfo->debug = 1;
            break;
        case 'e':
            pPortInfo->echo = 1;
            break;
        case 'f':
            pPortInfo->fctrl = atoi (optarg);
            break;
        case 'p':
            pPortInfo->parity = toupper (optarg[0]);
            break;
        case 's':
            pPortInfo->stopbit = optarg;
            break;
        case 't':
            pPortInfo->port = atoi (optarg);
            break;
        case ARG_HELP:
            usage (0, pPkgInfo->program_name, eargc);
            break;
        case ARG_VERSION:
            version (stdout, pPkgInfo);
            break;
        default:
            break;
        }
    }
    if (argc < optind + eargc) {
        usage (1, pPkgInfo->program_name, eargc);
    }
}

/* The name this program was run with. */
static void usage (INT32 status, const char *program_name, int eargc)
{
    if (status != 0) {
        fprintf (stderr, "Try `%s --help' for more information.\n",
                 program_name);
        exit (status);
    }
    printf ("Usage: %s [OPTION] %s\n", program_name,
            eargc ? "SOURCE" : "");
    printf ("\n\
  -b, --baudrate=BAUDRATE   set baudrate to BAUDRATE, default:115200\n\
  -c, --CS=DATABIT          set databit, 5, 6, 7, 8; default:8\n\
  -d, --debug               set debug mode\n\
  -e, --echo                set echo mode\n\
  -f, --flowcontrol         set flow control, default: 1\n\
                            0: none, 1: hardware, 2: software\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\
  -t, --tty=TTY             set tty to TTY, default: 0, /dev /ttyS0\n\
                            /dev/ttyS0 equals COM1 in DOS\n\
      --help                display this help and exit\n\
      --version             output version information and exit\n\
  Examples:\n  %s --baudrate 115200 --tty=1 --debug %s \n", program_name, eargc ? "*.c" : "");
    puts ("\nReport bugs to <[e-mail]>.");
    exit (status);
}

static void version (FILE * stream, const P_PACKAGE_INFO pPkgInfo)
{
    char           *version_etc_copyright =
        _("Copyright (C) 2002 Paul Studio.");
    if (pPkgInfo->program_name)
        fprintf (stream, "%s (%s) %s\n", pPkgInfo->program_name,
                 pPkgInfo->package, pPkgInfo->version);
    else
        fprintf (stream, "%s %s\n", pPkgInfo->package, pPkgInfo->version);
    fprintf (stream, _("Written by %s.\n"), pPkgInfo->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);
}