dsggregory

package myexec

import (
	"bufio"
	"bytes"
	"context"
	"fmt"
	"io"
	"os"
	"os/exec"

dsggregory

# Respond from a controller with a Tempfile and have the middleware unlink and close it.
#
# Send a file as ActionController::DataStreaming.send_file() does. This however, handles a Tempfile as input
# and unlinks/closes once the middleware is done with it. You cannot use send_file() to stream a temporary
# file and also control when it is unlinked in your controller because the RACK middleware actually performs
# the sending of the file AFTER the controller has returned. Rack may even pass the filename to the web server
# and have it make the actual delivery (X-Sendfile).
#
# Largely ripped directly from ActionController::DataStreaming.

dsggregory

/* NOTES:
  1. On 64bit without stdlib.h included, atol and strtoul of >MAXINT 
     returns "18446744071562067968" which is ULONG_MAX-INT_MAX on 64bit
  2. On 32bit
     a. with or without stdlib, >MAXINT returns MAXINT for atol()
     b. W/wo stdlib, strtoul does the correct conversion

  SUGGESTIONS:
  1. Build for 64bit but make sure stdlib.h is included
  2. Example

dsggregory

require 'ipaddr'

class Ip < ActiveRecord::Base
  attr_accessible :ip, :addr, :other_columns
  
  # The 'addr' accessor is what you use to properly set/get the 'ip' column.
  # This sets an instance variable to store the IPAddr class representing the
  # ip column in either IPv4 or IPv6.
  attr_accessor :addr
  validates_presence_of :addr, :message => "Invalid or empty IP Address"