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Diffstat (limited to 'lib/chef/mixin/from_file.rb')
-rw-r--r-- | lib/chef/mixin/from_file.rb | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/chef/mixin/from_file.rb b/lib/chef/mixin/from_file.rb new file mode 100644 index 0000000000..609fe1de55 --- /dev/null +++ b/lib/chef/mixin/from_file.rb @@ -0,0 +1,50 @@ +# +# Author:: Adam Jacob (<adam@opscode.com>) +# Author:: Christopher Walters (<cw@opscode.com>) +# Copyright:: Copyright (c) 2008 Opscode, Inc. +# License:: Apache License, Version 2.0 +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +class Chef + module Mixin + module FromFile + + # Loads a given ruby file, and runs instance_eval against it in the context of the current + # object. + # + # Raises an IOError if the file cannot be found, or is not readable. + def from_file(filename) + if File.exists?(filename) && File.readable?(filename) + self.instance_eval(IO.read(filename), filename, 1) + else + raise IOError, "Cannot open or read #{filename}!" + end + end + + # Loads a given ruby file, and runs class_eval against it in the context of the current + # object. + # + # Raises an IOError if the file cannot be found, or is not readable. + def class_from_file(filename) + if File.exists?(filename) && File.readable?(filename) + self.class_eval(IO.read(filename), filename, 1) + else + raise IOError, "Cannot open or read #{filename}!" + end + end + + end + end +end |