Some useful function around files C

files_stuffs

/*
 * List all directories and files recursively inside the given path
 * as tree view
 */
static void list_files_as_tree(char *basePath, const int root)
{
	/*
	 * Warning: This code requires hell lot of memory (stack)
	 */

    int i;
    char path[1000];
    struct dirent *dp;

    DIR *dir = opendir(basePath);
    if (!dir)
        return;

    while ((dp = readdir(dir)) != NULL)
    {
        if (strcmp(dp->d_name, ".") != 0 && strcmp(dp->d_name, "..") != 0)
        {
            for (i=0; i<root; i++)
            {
                if (i%2 == 0 || i == 0)
                    printf(" ");
                else
                    printf(" ");

            }

            printf("--%s\n", dp->d_name);

            strcpy(path, basePath);
            strcat(path, "/");
            strcat(path, dp->d_name);
            list_files_as_tree(path, root + 2);
        }
    }

    closedir(dir);
}



/*
 * print contents of a file to stdout (printf)
 */
static void print_file(char *file_name)
{
    FILE *fptr = fopen(file_name, "r");

	if (fptr == NULL) {
		ESP_LOGE(TAG, "print_file: Failed to open file for reading");
		fclose(fptr);
		return;
	}

	ESP_LOGI(TAG, "print_file: printing file: %s\n", file_name);

    char c = fgetc(fptr);
    while (!feof(fptr))
    {
        printf ("%c", c);
        c = fgetc(fptr);
    }

    printf("\n");

	fclose(fptr);
}

Sample O/P of list_files_as_tree():

--1.txt
--directory2
  --3.txt
--directory
  --2.txt
--index.html