readline

/*
 * See Zlib::GzipReader documentation for a description.
 */
static VALUE
rb_gzreader_readline(argc, argv, obj)
    int argc;
    VALUE *argv;
    VALUE obj;
{
    VALUE dst;
    dst = rb_gzreader_gets(argc, argv, obj);
    if (NIL_P(dst)) {
        rb_raise(rb_eEOFError, "end of file reached");
    }
    return dst;
}