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Versions: 25
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Contents
module Sys
#
# Return the current operating system: Darwin, Linux, or Windows.
#
def self.os
return @os if @os
require 'rbconfig'
if defined? RbConfig
host_os = RbConfig::CONFIG['host_os']
else
host_os = Config::CONFIG['host_os']
end
case host_os
when /darwin/
@os = "Darwin"
when /bsd/
@os = "BSD"
when /linux/
@os = "Linux"
when /mingw|mswin|cygwin/
@os = 'Windows'
else
#raise "Unknown OS: #{host_os.inspect}"
end
@os
end
#
# Is this Linux?
#
def self.linux?
os == "Linux"
end
#
# Is this Windows?
#
def self.windows?
os == "Windows"
end
#
# Is this Darwin?
#
def self.darwin?
os == "Darwin"
end
#
# Is this a Mac? (aka. Darwin?)
#
def self.mac?; darwin?; end
#
# Is this BSD?
#
def self.bsd?
os == "BSD" or os == "Darwin"
end
#
# A metaprogramming helper that allows you to write platform-specific methods
# which the user can call with one name. Here's how to use it:
#
# Define these methods:
# reboot_linux, reboot_darwin, reboot_windows
#
# Call the magic method:
# cross_platform_method(:reboot)
#
# Now the user can execute "reboot" on any platform!
#
# (Note: If you didn't create a method for a specific platform, then you'll get
# NoMethodError exception when the "reboot" method is called on that platform.)
#
def self.cross_platform_method(name)
platform_method_name = "#{name}_#{os.downcase}"
metaclass.instance_eval do
define_method(name) do |*args|
begin
self.send(platform_method_name, *args)
rescue NoMethodError
raise NotImplementedError.new("#{name} is not yet supported on #{os}.")
end
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems