first commit

Rakefile.example

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+require 'knife/dsl'
+
+task :list_nodes do
+  knife :node_list
+end

lib/knife/dsl.rb

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+require 'chef/application/knife'
+require 'stringio'
+
+module Chef::Knife::DSL
+  module Chef::Knife::DSL::Support
+    def self.run_knife(command, args)
+      unless command.kind_of?(Array)
+        command = command.to_s.split(/[\s_]+/)
+      end
+
+      command += args
+
+      if ENV["CHEF_CONFIG"]
+        command += ['-c', ENV["CHEF_CONFIG"]]
+      end
+
+      opts = Chef::Application::Knife.new.options
+      Chef::Knife.run(command, opts)
+    end
+  end
+
+  def knife(command, args=[])
+    Chef::Knife::DSL::Support.run_knife(command, args)
+  end
+
+  def knife_capture(command, args=[], input=nil)
+    null = Gem.win_platform? ? File.open('NUL:', 'r') : File.open('/dev/null', 'r')
+
+    warn = $VERBOSE 
+    $VERBOSE = nil
+    stderr, stdout, stdin = STDERR, STDOUT, STDIN
+
+    Object.const_set("STDERR", StringIO.new('', 'r+'))
+    Object.const_set("STDOUT", StringIO.new('', 'r+'))
+    Object.const_set("STDIN", input ? StringIO.new(input, 'r') : null)
+    $VERBOSE = warn
+
+    Chef::Knife::DSL::Support.run_knife(command, args)
+    return STDOUT.string, STDERR.string
+  ensure
+    warn = $VERBOSE 
+    $VERBOSE = nil
+    Object.const_set("STDERR", stderr)
+    Object.const_set("STDOUT", stdout)
+    Object.const_set("STDIN", stdin)
+    $VERBOSE = warn
+    null.close
+  end
+end
+
+class << eval("self", TOPLEVEL_BINDING)
+  include Chef::Knife::DSL
+end
+
+if defined? Rake::DSL
+  module Rake::DSL
+    include Chef::Knife::DSL
+  end
+end