resolver.rb in net-dns-0.5.3

- old
+ new

@@ -2,10 +2,11 @@
 #       $Id: Resolver.rb,v 1.11 2006/07/30 16:55:35 bluemonk Exp $      
 #
 
 
 
+require 'rbconfig'
 require 'socket'
 require 'timeout'
 require 'ipaddr'
 require 'logger'
 require 'net/dns/packet'
@@ -1060,11 +1061,11 @@
       private
       
       # Parse a configuration file specified as the argument. 
       #
       def parse_config_file
-        if RUBY_PLATFORM =~ /win/
+        if self.class.platform_windows?
           require 'win32/resolv'
           arr = Win32::Resolv.get_resolv_info
           self.domain = arr[0]
           self.nameservers = arr[1]
         else
@@ -1221,10 +1222,24 @@
           raise ResolverArgumentError, "Invalid domain name #{name}"
         else
           true
         end
       end
-          
+      
+      
+      class << self
+        
+        # Returns true if running on a Windows platform.
+        #
+        # Note. This method doesn't rely on the RUBY_PLATFORM constant
+        # because the comparison will fail when running on JRuby.
+        # On JRuby RUBY_PLATFORM == 'java'.
+        def platform_windows?
+          !!(Config::CONFIG["host_os"] =~ /msdos|mswin|djgpp|mingw/i)
+        end
+        
+      end
+    
     end # class Resolver
   end # module DNS
 end # module Net
 
 class ResolverArgumentError < ArgumentError # :nodoc: