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| #include <stdlib.h>
#include <getopt.h>
#include <stdio.h>
#include <errno.h>
#include <rte_eal.h>
#include <rte_common.h>
typedef struct cfgs {
uint32_t num;
char *string;
bool mode;
} cfgs_t;
enum {
CMD_OPT_NUM = 1,
CMD_OPT_STRING,
CMD_OPT_MODE,
};
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"num", required_argument, NULL, CMD_OPT_NUM},
{"string", required_argument, NULL, CMD_OPT_STRING},
{"mode", no_argument, NULL, CMD_OPT_MODE},
{0,0,0,0}
};
static void print_usage(const char *prgname)
{
printf("%s [OPTIONS]\n", prgname);
printf("--help Help\n");
printf("--num <uint32> Num\n");
printf("--string <string> String\n");
printf("--mode Mode\n");
}
bool str_to_uint32(const char *str, uint32_t *num) {
char *endptr;
errno = 0;
unsigned long val = strtoul(str, &endptr, 10);
if (errno != 0 || *endptr != '\0' || val > UINT32_MAX) {
return false;
}
*num = (uint32_t)val;
return true;
}
static uint32_t parse_num(const char *arg) {
uint32_t value;
if (str_to_uint32(arg, &value))
{
return value;
}
rte_exit(EXIT_FAILURE, "Failed to parse num\n");
}
static cfgs_t parse_args(int argc, char **argv) {
cfgs_t cfgs;
char *prgname = argv[0];
cfgs.num = 0;
cfgs.string = NULL;
cfgs.mode = false;
int option_id;
while ((option_id = getopt_long_only(argc, argv, "h", long_options, NULL)) != -1)
{
switch (option_id)
{
case 'h':
print_usage(prgname);
rte_exit(EXIT_SUCCESS, "Exit APP\n");
case CMD_OPT_NUM:
cfgs.num = parse_num(optarg);
break;
case CMD_OPT_STRING:
cfgs.string = optarg;
break;
case CMD_OPT_MODE:
cfgs.mode = true;
break;
default:
print_usage(prgname);
rte_exit(EXIT_FAILURE, "Invalid command line parameter\n");
}
}
return cfgs;
}
int main(int argc, char **argv){
int ret;
ret = rte_eal_init(argc, argv);
if (ret < 0)
{
rte_exit(EXIT_FAILURE, "Failed to init eal");
}
argc -= ret;
argv += ret;
cfgs_t cfgs = parse_args(argc, argv);
printf("num: %d\n", cfgs.num);
printf("string: %s\n", cfgs.string);
printf("mode: %d\n", cfgs.mode);
printf("Finished initiation\n");
}
|