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#include <stdio.h>
#include <stdlib.h>
#include "foodopts.h"
static struct option *
to_getopt_longopts(const struct foodoption * src)
{
int l = 0;
while( src[l].name != 0
|| src[l].has_arg != 0
|| src[l].flag != 0
|| src[l].val != 0) {
l++;
}
struct option * dst = (struct option *)malloc(sizeof(struct option) * (l + 1));
int i = 0;
while( src[i].name != 0
|| src[i].has_arg != 0
|| src[i].flag != 0
|| src[i].val != 0) {
dst[i].name = src[i].name;
dst[i].has_arg = src[i].has_arg;
dst[i].flag = src[i].flag;
dst[i].val = src[i].val;
i++;
}
dst[i].name = 0;
dst[i].has_arg = 0;
dst[i].flag = 0;
dst[i].val = 0;
return dst;
}
int
get_foodopt(int argc, char *const argv[],
const char *optstring,
const struct foodoption *longopts,
int *longindex)
{
struct option * o = to_getopt_longopts(longopts);
int rc = getopt_long(argc, argv, optstring, o, longindex);
free(o);
return rc;
}
const char *
get_argument(const char opt,
const struct foodoption *longopts)
{
int i = 0;
while ((longopts[i].name)
&& (longopts[i].val)) {
if (longopts[i].val == opt)
return longopts[i].arg;
i++;
}
return NULL;
}
void
foodopt_help(char * argv0,
const struct foodoption *longopts)
{
fprintf(stderr, "%s [OPTION ...] FILE ...\n", argv0);
fprintf(stderr, "\nOPTIONS:\n");
int i = 0;
while ((longopts[i].name)
&& (longopts[i].val)) {
if (longopts[i].category) {
fprintf(stderr, "\n%s:\n", longopts[i].category);
}
fprintf(stderr, "-%c, --%s%s%s: %s\n",
longopts[i].val,
longopts[i].name,
(longopts[i].has_arg == required_argument || longopts[i].has_arg == optional_argument) ? " " : "",
(longopts[i].has_arg == required_argument || longopts[i].has_arg == optional_argument) ? longopts[i].arg : "",
longopts[i].help);
i++;
}
}
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