gif_downloader.c

/**
 * Build with:
gcc -o image_downloader image_downloader.c -lcurl
 *
*/

#include <stdio.h>
#include <curl/curl.h>
#include <string.h>

size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {
    size_t written = fwrite(ptr, size, nmemb, stream);
    return written;
}

int main(void) {
    CURL *curl;
    FILE *fp;
    CURLcode res;
    int i = 1;
    while (i <= 151) {
        char num[10];
        if (i < 10) {
            sprintf(num, "00%d", i);
        } else if (i < 100) {
            sprintf(num, "0%d", i);
        } else {
            sprintf(num, "%d", i);
        }
        char url[256];
        sprintf(url, "https://www.pokencyclopedia.info/sprites/menu-icons/ico-a_old/ico-a_old_%s.gif", num);
        char outfilename[50];
        sprintf(outfilename, "resources/gif/%s.gif", num);
        curl = curl_easy_init();
        if (curl) {
            fp = fopen(outfilename,"wb");
            if (fp != NULL) {
                curl_easy_setopt(curl, CURLOPT_URL, url);
                curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
                curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
                res = curl_easy_perform(curl);
                fclose(fp);
            }
            /* always cleanup */
            curl_easy_cleanup(curl);
        }
        i++;
    }
    fclose(fp);
    return 0;
}