ex_base64.c

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/*
 * Nilorea Library
 * Copyright (C) 2005-2026 Castagnier Mickael
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "nilorea/n_log.h"
#include "nilorea/n_list.h"
#include "nilorea/n_str.h"
#include "nilorea/n_base64.h"
 
int main(int argc, char* argv[]) {
    set_log_level(LOG_DEBUG);
 
    N_STR* example_text = char_to_nstr("This is an example of base64 encode/decode, with a newline:\nThis is the end of the testing test.");
    example_text->written = 0;
    while (example_text->data[example_text->written] != '\0') {
        example_text->written++;
    }
 
    n_log(LOG_NOTICE, "Testing base64, encoding text of size (%ld/%ld):\n%s", example_text->written, example_text->length, _nstr(example_text));
 
    N_STR* encoded_answer = n_base64_encode(example_text);
    n_log(LOG_DEBUG, "encoded=\n%s", _nstr(encoded_answer));
 
    N_STR* decoded_answer = n_base64_decode(encoded_answer);
    n_log(LOG_DEBUG, "decoded=\n%s", _nstr(decoded_answer));
 
    free_nstr(&encoded_answer);
    free_nstr(&decoded_answer);
 
    if (argc > 1 && argv[1]) {
        N_STR* input_data = NULL;
        N_STR* output_name = NULL;
        N_STR* output_data = NULL;
        N_STR* decoded_data = NULL;
 
        nstrprintf(output_name, "%s.encoded", argv[1]);
        input_data = file_to_nstr(argv[1]);
 
        if (input_data) {
            n_log(LOG_DEBUG, "Encoding file %s size %ld", argv[1], input_data->written);
            output_data = n_base64_encode(input_data);
            nstr_to_file(output_data, _nstr(output_name));
            n_log(LOG_DEBUG, "Generated encoded %s version of size %ld", _nstr(output_name), output_data->written);
 
            nstrprintf(output_name, "%s.decoded", argv[1]);
            decoded_data = n_base64_decode(output_data);
            nstr_to_file(decoded_data, _nstr(output_name));
 
            n_log(LOG_DEBUG, "Generated decoded %s version of size %ld", _nstr(output_name), decoded_data->written);
            free_nstr(&decoded_data);
        }
        free_nstr(&input_data);
        free_nstr(&output_name);
        free_nstr(&output_data);
    }
    free_nstr(&example_text);
 
    /* test character classification and conversion helpers */
    n_log(LOG_INFO, "n_isupper('A'): %d", n_isupper('A'));
    n_log(LOG_INFO, "n_isupper('a'): %d", n_isupper('a'));
    n_log(LOG_INFO, "n_islower('z'): %d", n_islower('z'));
    n_log(LOG_INFO, "n_islower('Z'): %d", n_islower('Z'));
    n_log(LOG_INFO, "n_isalpha('B'): %d", n_isalpha('B'));
    n_log(LOG_INFO, "n_isalpha('5'): %d", n_isalpha('5'));
    n_log(LOG_INFO, "n_toupper('c'): %c", n_toupper('c'));
    n_log(LOG_INFO, "n_tolower('D'): %c", n_tolower('D'));
 
    exit(0);
} /* END_OF_MAIN */