Method readLine

FluidNC/src/InputFile.cpp:15–36

Read a line from the file Returns Error::Ok if a line was read, even if the line was empty. Returns Error::EOF on end of file. Returns other Error code on error, after displaying a message. */

  Returns other Error code on error, after displaying a message.
*/
Error InputFile::readLine(char* line, size_t maxlen) {
    size_t len = 0;
    int    c;
    while ((c = read()) >= 0) {
        if (len >= maxlen) {
            return Error::LineLengthExceeded;
        }
        if (c == '\r') {
            continue;
        }
        if (c == '\n') {
            ++_line_number;
            if (len == 0) {
                ++_blank_lines;
            }
            break;
        }
        line[len++] = c;
    }
    line[len] = '\0';
    return len || c >= 0 ? Error::Ok : Error::Eof;
}

void InputFile::ack(Error status) {
    if (status != Error::Ok) {