lib/sxmrb.rb in sxmrb-0.1.1 vs lib/sxmrb.rb in sxmrb-0.2.0

@@ -6,13 +6,24 @@
 require 'shellwords'
 
 require 'singleton'
 require 'forwardable'
 
+begin
+  require 'backports/3.0.0/symbol'
+rescue LoadError
+  unless Symbol.method_defined? :name
+    # Symbol#name hack
+    class Symbol
+      alias name to_s
+    end
+  end
+end
+
 # SXMO user scripts in ruby.
 class Sxmrb
-  include Singleton
+  include ::Singleton
 
   # Normally when using Singleton there is no way to pass arguments
   # when instantiating.  The renew hack below allows the singleton
   # instance to be re-instantiated and can pass arguments at that time;
   # this was added as an experiment to assist with testing.
@@ -47,58 +58,26 @@
 
       cmd << " -p #{prompt.inspect}" if prompt
     }
   end
 
-  # Run the awk command.
-  #
-  # @example
-  #   print(sh('ls -l') | awk('{print $1}').to_s)
-  def awk(arg = '')
-    sh("awk -e #{Shellwords.escape arg.chomp}")
-  end
-
-  # Run the cat command.
-  #
-  # @example
-  #   print cat('/etc/passwd').to_s
-  def cat(arg = '')
-    sh("cat #{arg.chomp}")
-  end
-
-  # Run the column command.
-  #
-  # @example
-  #   print(sh('ls -l') | column('-t').to_s)
-  def column(arg = '')
-    sh("column #{arg.chomp}")
-  end
-
-  # Run the shell echo command.
-  #
-  # @example
-  #   print echo('Hello World').to_s
-  def echo(arg = '')
-    sh("echo #{Shellwords.escape arg.chomp}")
-  end
-
-  # Run the tac command.
-  #
-  # @example
-  #   print tac('/etc/passwd').to_s
-  def tac(arg = '')
-    sh("tac #{arg.chomp}")
-  end
-
   # Use a blank #menu to prompt for a value.
   #
   # @example
   #   value = input(prompt: 'Amount?').to_i
   def input(prompt:)
     (echo | menu(prompt: prompt)).to_s.chomp
   end
 
+  def method_missing(cmd, *args, &_block)
+    sh(*([cmd.name] + args))
+  end
+
+  def respond_to_missing?(cmd, include_private = false)
+    sh('which', cmd.name).empty? ? super : true
+  end
+
   class <<self
     # This evil hack experiment is intended to allow swapping out the
     # Shell instance when testing.
     def renew_instance(...) # :nodoc:
       @singleton__mutex__.synchronize {
@@ -106,10 +85,10 @@
       }
     end
 
     # Forward instance methods to the Singleton instance; false here
     # excludes ancestor methods.
-    extend Forwardable
+    extend ::Forwardable
     def_delegators :instance, *Sxmrb.instance_methods(false)
   end
 
   class Error < ::StandardError; end
 end