Class: Iodine::Base::RackIO

Inherits:
Object
  • Object
show all
Defined in:
ext/iodine/iodine_rack_io.c

Instance Method Summary collapse

Instance Method Details

#_hijack(*args) ⇒ Object

for Rack: rack.hijack_io


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# File 'ext/iodine/iodine_rack_io.c', line 185

static VALUE rio_get_io(int argc, VALUE *argv, VALUE self) {
  if (TCPSOCKET_CLASS == Qnil)
    return Qfalse;
  VALUE env = rb_ivar_get(self, env_id);
  http_s *h = get_handle(self);
  if (h == NULL) {
    /* we're repeating ourselves, aren't we? */
    VALUE io = rb_hash_aref(env, IODINE_R_HIJACK_IO);
    return io;
  }
  // mark update
  set_handle(self, NULL);
  // hijack the IO object
  intptr_t uuid = http_hijack(h, NULL);
  VALUE fd = INT2FIX(fio_uuid2fd(uuid));
  // VALUE new_io = how the fuck do we create a new IO from the fd?
  VALUE new_io = IodineCaller.call2(TCPSOCKET_CLASS, for_fd_id, 1,
                                    &fd); // TCPSocket.for_fd(fd) ... cool...
  rb_hash_aset(env, IODINE_R_HIJACK_IO, new_io);
  if (argc)
    rb_hash_aset(env, IODINE_R_HIJACK_CB, *argv);
  return new_io;
}

#closeObject

Does nothing - this is controlled by the server.


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# File 'ext/iodine/iodine_rack_io.c', line 157

static VALUE rio_close(VALUE self) {
  // FIOBJ io = get_data(self);
  // fiobj_free(io); // we don't call fiobj_dup, do we?
  rb_ivar_set(self, io_id, INT2NUM(0));
  (void)self;
  return Qnil;
}

#eachObject

Passes each line of the input to the block. This should be avoided.


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# File 'ext/iodine/iodine_rack_io.c', line 166

static VALUE rio_each(VALUE self) {
  rb_need_block();
  rio_rewind(self);
  VALUE str = Qnil;
  while ((str = rio_gets(self)) != Qnil) {
    rb_yield(str);
  }
  return self;
}

#getsObject

Gets returns a line. this is okay for small lines, but shouldn't really be used.

Limited to ~ 1Mb of a line length.


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# File 'ext/iodine/iodine_rack_io.c', line 97

static VALUE rio_gets(VALUE self) {
  FIOBJ io = get_data(self);
  if (!FIOBJ_TYPE_IS(io, FIOBJ_T_DATA))
    return Qnil;
  fio_str_info_s line = fiobj_data_gets(io);
  if (line.len) {
    VALUE buffer = rb_str_new(line.data, line.len);
    // make sure the buffer is binary encoded.
    rb_enc_associate(buffer, IodineBinaryEncoding);
    return buffer;
  }
  return Qnil;
}

#read(*args) ⇒ Object

Reads data from the IO, according to the Rack specifications for #read.


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# File 'ext/iodine/iodine_rack_io.c', line 112

static VALUE rio_read(int argc, VALUE *argv, VALUE self) {
  FIOBJ io = get_data(self);
  VALUE buffer = Qnil;
  uint8_t ret_nil = 0;
  ssize_t len = 0;
  if (!FIOBJ_TYPE_IS(io, FIOBJ_T_DATA)) {
    return (argc > 0 && argv[0] != Qnil) ? Qnil : rb_str_buf_new(0);
  }

  // get the buffer object if given
  if (argc == 2) {
    Check_Type(argv[1], T_STRING);
    buffer = argv[1];
  }
  // get the length object, if given
  if (argc > 0 && argv[0] != Qnil) {
    Check_Type(argv[0], T_FIXNUM);
    len = FIX2LONG(argv[0]);
    if (len < 0)
      rb_raise(rb_eRangeError, "length should be bigger then 0.");
    if (len == 0)
      return rb_str_buf_new(0);
    ret_nil = 1;
  }
  // return if we're at the EOF.
  fio_str_info_s buf = fiobj_data_read(io, len);
  if (buf.len) {
    // create the buffer if we don't have one.
    if (buffer == Qnil) {
      // make sure the buffer is binary encoded.
      buffer = rb_enc_str_new(buf.data, buf.len, IodineBinaryEncoding);
    } else {
      // make sure the buffer is binary encoded.
      rb_enc_associate(buffer, IodineBinaryEncoding);
      if (rb_str_capacity(buffer) < (size_t)buf.len)
        rb_str_resize(buffer, buf.len);
      memcpy(RSTRING_PTR(buffer), buf.data, buf.len);
      rb_str_set_len(buffer, buf.len);
    }
    return buffer;
  }
  return ret_nil ? Qnil : rb_str_buf_new(0);
}

#rewindObject

IO methods


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# File 'ext/iodine/iodine_rack_io.c', line 84

static VALUE rio_rewind(VALUE self) {
  FIOBJ io = get_data(self);
  if (!FIOBJ_TYPE_IS(io, FIOBJ_T_DATA))
    return Qnil;
  fiobj_data_seek(io, 0);
  return INT2NUM(0);
}