Function cat

components/dfs/dfs_v2/src/dfs_file.c:2711–2749

* @brief Display file contents to standard output * * This function reads and prints the contents of the specified file to the console. * It handles both text and binary files by reading in chunks and printing the output. * * @param[in] filename Path to the file to be displayed */

 * @param[in] filename Path to the file to be displayed
 */
void cat(const char *filename)
{
    int length = 0;
    char buffer[81];
    struct dfs_file file;

    if (filename && dfs_file_isdir(filename) == 0)
    {
        rt_kprintf("cat: %s Is a directory\n", filename);
        return;
    }

    dfs_file_init(&file);

    DLOG(msg, "dfs", "dfs_file", DLOG_MSG, "dfs_file_open(%s, O_RDONLY, 0)", filename);
    if (dfs_file_open(&file, filename, O_RDONLY, 0) < 0)
    {
        rt_kprintf("Open %s failed\n", filename);
        dfs_file_deinit(&file);
        return;
    }

    do
    {
        rt_memset(buffer, 0x0, sizeof(buffer));
        DLOG(msg, "dfs", "dfs_file", DLOG_MSG, "dfs_file_read(fd, buffer, %d)", sizeof(buffer) - 1);
        length = dfs_file_read(&file, (void *)buffer, sizeof(buffer) - 1);
        if (length > 0)
        {
            buffer[length] = '\0';
            rt_kprintf("%s", buffer);
        }
    } while (length > 0);
    rt_kprintf("\n");

    DLOG(msg, "dfs", "dfs_file", DLOG_MSG, "dfs_file_close()");
    dfs_file_close(&file);
    dfs_file_deinit(&file);
}

#define BUF_SZ  4096
/**