R/rnanomsg.R

In mhowlett/rnanomsg: An R binding for nanomsg

# Copyright (c) 2014 Matthew Howlett
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights 
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.


#dyn.load('rnanomsg.so')
#source('constants.R')
#source('examples.R')


### METHODS

nn_socket <- function(domain, protocol) {
  if (!is.integer(domain)) {
    stop("domain parameter must have type integer")
  }
  if (!is.integer(protocol))
  {
    stop("protocol parameter must have type integer")
  }

  .Call("rnn_socket", domain, protocol)
}

nn_close <- function(s) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }

  .Call("rnn_close", s)
}

nn_shutdown <- function(s, how) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.integer(how)) {
    stop("how parameter must have type integer")
  }

  .Call("rnn_shutdown", s, how)
}

nn_connect <- function(s, addr) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.character(addr)) {
    stop("addr parameter must have type character")
  }

  .Call("rnn_connect", s, addr)
}

nn_bind <- function(s, addr) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.character(addr)) {
    stop("addr parameter must have type character")
  }

  .Call("rnn_bind", s, addr)
}

nn_send <- function(s, buf, flags) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.integer(flags)) {
    stop("flags parameter must have type integer")
  }

  .Call("rnn_send", s, as.raw(buf), flags)
}

nn_recv <- function(s, flags) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.integer(flags)) {
    stop("flags parameter must have type integer")
  }

  result <- .Call("rnn_recv", s, flags)
  list(rv = result[[1]], buf = result[[2]])
}

nn_device <- function(s1, s2) {
  if (!is.integer(s1)) {
    stop("s1 parameter must have type integer")
  }
  if (!is.integer(s2)) {
    stop("s2 parameter must have type integer")
  }

  .Call("rnn_device", s1, s2)
}

nn_term <- function() {
  .Call("rnn_term")
}

nn_errno <- function() {
  .Call("rnn_errno")
}

nn_strerror <- function(errnum) {
  if (!is.integer(errnum)) {
    stop("errnum parameter must have type integer")
  }

  .Call("rnn_strerror", errnum)
}

nn_getsockopt <- function(s, level, option, type, optvallen = 256L) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.integer(option)) {
    stop("option parameter must have type integer")
  }
  if (!is.integer(level)){
    stop("level parameter must have type integer")
  }
  if (!is.integer(optvallen)){
    stop("optvallen parameter must have type integer")
  }

  if (is.integer(type)) {
    .Call("rnn_getsockopt_int", s, level, option)
  } else if (is.character(type)) {
    .Call("rnn_getsockopt_char", s, level, option, optvallen)
  } else {
    stop("unsupported option type")
  }
}

nn_setsockopt <- function(s, level, option, optval) {
  if (!is.integer(s)) {
    stop("s parameter must have type integer")
  }
  if (!is.integer(option)) {
    stop("option parameter must have type integer")
  }
  if (!is.integer(level)){
    stop("level parameter must have type integer")
  }

  if (is.character(optval)) {
    .Call("rnn_setsockopt_char", s, level, option, optval)
  }
  else if (is.integer(optval)) {
    .Call("rnn_setsockopt_int", s, level, option, optval)
  }
  else if (is.double(optval) && round(optval) == optval) {
    # because an numeric literal is a double not an integer.
    .Call("rnn_setsockopt_int", s, level, option, as.integer(optval))
  }
  else {
    stop("optval type provided is not supported")
  }
}

nn_poll <- function() {
  stop("not implemented")
}