utils.c


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/*
 * Created by yuuta on 3/19/23.
 */

#include "utils.h"

#include <inttypes.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>

uint32_t tg_url_get_index(const char *url) {
    char *tok = strrchr(url, '/');

    if (!tok) {
        return 0;
    }

    char *endptr;
    uintmax_t unum = strtoumax(tok + 1, &endptr, 10);
    if (strcmp(endptr, "") != 0 || (unum == UINTMAX_MAX && errno == ERANGE)) {
        return 0;
    }
    if (unum > UINT32_MAX) {
        return 0;
    }
    return (uint32_t) unum;
}