vagrant and chef install everything

ops/cookbooks/vendor/ark/libraries/tar_command_builder.rb

@@ -0,0 +1,56 @@
+module Ark
+  class TarCommandBuilder
+    def unpack
+      "#{tar_binary} #{args} #{resource.release_file}#{strip_args}"
+    end
+
+    def dump
+      "tar -mxf \"#{resource.release_file}\" -C \"#{resource.path}\""
+    end
+
+    def cherry_pick
+      "#{tar_binary} #{args} #{resource.release_file} -C #{resource.path} #{resource.creates}#{strip_args}"
+    end
+
+    def initialize(resource)
+      @resource = resource
+    end
+
+    private
+
+    attr_reader :resource
+
+    def node
+      resource.run_context.node
+    end
+
+    def tar_binary
+      @tar_binary ||= node['ark']['tar'] || case node['platform_family']
+                                            when 'mac_os_x', 'freebsd'
+                                              '/usr/bin/tar'
+                                            when 'smartos'
+                                              '/bin/gtar'
+                                            else
+                                              '/bin/tar'
+                                            end
+    end
+
+    def args
+      case resource.extension
+      when /^(tar)$/         then 'xf'
+      when /^(tar.gz|tgz)$/  then 'xzf'
+      when /^(tar.bz2|tbz)$/ then 'xjf'
+      when /^(tar.xz|txz)$/  then 'xJf'
+      else raise unsupported_extension
+      end
+    end
+
+    def strip_args
+      resource.strip_components > 0 ? " --strip-components=#{resource.strip_components}" : ''
+    end
+
+    def unsupported_extension
+      "Don't know how to expand #{resource.url} (extension: #{resource.extension})"
+    end
+  end
+end