[C++知识库]getopt_long 的使用参数的传递

#include <stdint.h>
#include <getopt.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <linux/string.h>
#include <ctype.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <basetypes.h>
#include <inttypes.h>

enum numeric_short_options {
	HELP = 0,
	VERSION_INFO,
	AUTO_DOWNLOAD,
	AUTO_BOOT,
	PRI_ADDR,
}；
static const char *short_options = "b:fjopqs:ytd:KMRBGA:HQIUWXYZC:c:F:L:S:D:V:E:N:B:P:";
static struct option long_options[] = {
	{"jffs2", no_argument, 0, 'j'},
	{"yaffs", no_argument, 0, 'y'},
	{"forcelegacy", no_argument, 0, 'f'},
	{"oob", no_argument, 0, 'o'},
	{"start", required_argument, 0, 's'},
	{"pad", no_argument, 0, 'p'},
	{"blockalign", required_argument, 0, 'b'},
	{"quiet", no_argument, 0, 'q'},
	{"skiphead", no_argument, 0, 't'},
	{"help", no_argument, 0, HELP},
	{"version", no_argument, 0, VERSION_INFO},
	{"fdt", required_argument, 0, 'd'},
	{"auto_boot", required_argument, 0, AUTO_BOOT},
	{"auto_dl", required_argument, 0, AUTO_DOWNLOAD},
    {0, 0, 0, 0},
};

static int      ambarella_auto_dl = 0;
static u8  ambarella_auto_dl_data=1;

static int      ambarella_auto_boot = 0;
static u8  ambarella_auto_boot_data=1;

int  main(int argc, char *argv[])
{
	int error = 0;
	int ch;
	int option_index = 0;
	while ((ch = getopt_long(argc, argv, short_options, long_options, &option_index)) != -1) {
		switch (ch) {
			case HELP:
				usage();
				break;
			case VERSION_INFO:
				display_version();
				break;
			case AUTO_DOWNLOAD:
				ambarella_auto_dl = 1;
				ambarella_auto_dl_data=strtoul (optarg, NULL, 0);
	
				break;
			case AUTO_BOOT:
				ambarella_auto_boot_data=strtoul (optarg, NULL, 0);
				ambarella_skip_img = 1;
				break;
			case PRI_ADDR:
				ambarella_pri_addr = 1;
				ambarella_pri_addr_data = strtoul (optarg, NULL, 0);
				ambarella_skip_img = 1;
				break;
			case PRI_FILE:
				ambarella_pri_file = 1;
				strncpy(ambarella_pri_file_data, optarg, SN_SIZE - 1);
				ambarella_pri_file_data[SN_SIZE - 1] = '\0';
				ambarella_skip_img = 1;
				break;
			case 'M':
				ambarella_rmd = 1;
				break;
			case 'R':
				ambarella_rom = 1;
				break;
            }
    }
    return 0;
}

required_argument? 为需要带参数后面跟着：号 如 debug -a test;

no_argument? 不需要带参数 不跟：号 如 debug -a;