module IO::generic_readable - Documentation for Ruby 2.3.0

getch(min: nil, time: nil) → char click to toggle source

See IO#getch.

static VALUE
io_getch(int argc, VALUE *argv, VALUE io)
{
    return rb_funcall2(io, id_getc, argc, argv);
}

getpass(prompt=nil) → string click to toggle source

See IO#getpass.

static VALUE
io_getpass(int argc, VALUE *argv, VALUE io)
{
    VALUE str;

    rb_check_arity(argc, 0, 1);
    prompt(argc, argv, io);
    str = str_chomp(rb_funcallv(io, id_gets, 0, 0));
    puts_call(io);
    return str;
}

read_nonblock(integer[, outbuf [, opts]]) → string click to toggle source

Similar to read, but raises EOFError at end of string unless the +exception: false+ option is passed in.

static VALUE
strio_read_nonblock(int argc, VALUE *argv, VALUE self)
{
    VALUE opts = Qnil, val;

    rb_scan_args(argc, argv, "11:", NULL, NULL, &opts);

    if (!NIL_P(opts)) {
        argc--;
    }

    val = strio_read(argc, argv, self);
    if (NIL_P(val)) {
        if (!NIL_P(opts) &&
              rb_hash_lookup2(opts, sym_exception, Qundef) == Qfalse)
            return Qnil;
        else
            rb_eof_error();
    }

    return val;
}

readbyte → fixnum click to toggle source

See IO#readbyte.

static VALUE
strio_readbyte(VALUE self)
{
    VALUE c = rb_funcall2(self, rb_intern("getbyte"), 0, 0);
    if (NIL_P(c)) rb_eof_error();
    return c;
}

readchar → string click to toggle source

See IO#readchar.

static VALUE
strio_readchar(VALUE self)
{
    VALUE c = rb_funcall2(self, rb_intern("getc"), 0, 0);
    if (NIL_P(c)) rb_eof_error();
    return c;
}

readline(sep=$/) → string click to toggle source

readline(limit) → string or nil

readline(sep, limit) → string or nil

See IO#readline.

static VALUE
strio_readline(int argc, VALUE *argv, VALUE self)
{
    VALUE line = rb_funcall2(self, rb_intern("gets"), argc, argv);
    if (NIL_P(line)) rb_eof_error();
    return line;
}

readpartial(integer[, outbuf]) → string click to toggle source

Similar to read, but raises EOFError at end of string instead of returning nil, as well as IO#sysread does.

static VALUE
strio_sysread(int argc, VALUE *argv, VALUE self)
{
    VALUE val = rb_funcall2(self, rb_intern("read"), argc, argv);
    if (NIL_P(val)) {
        rb_eof_error();
    }
    return val;
}

sysread(integer[, outbuf]) → string click to toggle source

Similar to read, but raises EOFError at end of string instead of returning nil, as well as IO#sysread does.

static VALUE
strio_sysread(int argc, VALUE *argv, VALUE self)
{
    VALUE val = rb_funcall2(self, rb_intern("read"), argc, argv);
    if (NIL_P(val)) {
        rb_eof_error();
    }
    return val;
}