core-lightning/devtools/features.c

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/* Turns a hex string into feature. */
#include "config.h"
#include <ccan/err/err.h>
#include <common/features.h>
#include <common/utils.h>
#include <stdio.h>
int main(int argc, char *argv[])
{
const u8 *features;
setup_locale();
if (argc != 2)
errx(1, "Usage: %s <hexstring>", argv[0]);
features = tal_hexdata(NULL, argv[1], strlen(argv[1]));
if (!features)
errx(1, "bad hexstring");
for (size_t i = 0; i < tal_bytelen(features) * 8; i++) {
if (feature_is_set(features, i))
printf("%s (%s)\n",
feature_name(features, i),
i % 2 ? "optional" : "compulsory");
}
tal_free(features);
}