[OC-3564] move core Chef to the repo root \o/ \m/

The opscode/chef repository now only contains the core Chef library code
used by chef-client, knife and chef-solo!

1 files changed, 70 insertions, 0 deletions

diff --git a/lib/chef/version_class.rb b/lib/chef/version_class.rb
new file mode 100644
index 0000000000..e9879274ad
--- /dev/null
+++ b/lib/chef/version_class.rb
@@ -0,0 +1,70 @@
+# Author:: Seth Falcon (<seth@opscode.com>)
+# Author:: Christopher Walters (<cw@opscode.com>)
+# Copyright:: Copyright 2010-2011 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
+  class Version
+    include Comparable
+    attr_reader :major, :minor, :patch
+
+    def initialize(str="")
+      parse(str)
+    end
+
+    def inspect
+      "#{@major}.#{@minor}.#{@patch}"
+    end
+
+    def to_s
+      "#{@major}.#{@minor}.#{@patch}"
+    end
+
+    def <=>(v)
+      [:major, :minor, :patch].each do |method|
+        ans = (self.send(method) <=> v.send(method))
+        return ans if ans != 0
+      end
+      0
+    end
+
+    def hash
+      # Didn't put any thought or research into this, probably can be
+      # done better
+      to_s.hash
+    end
+
+    # For hash
+    def eql?(other)
+      other.is_a?(Version) && self == other
+    end
+
+    private
+
+    def parse(str="")
+      @major, @minor, @patch =
+        case str.to_s
+        when /^(\d+)\.(\d+)\.(\d+)$/
+          [ $1.to_i, $2.to_i, $3.to_i ]
+        when /^(\d+)\.(\d+)$/
+          [ $1.to_i, $2.to_i, 0 ]
+        else
+          msg = "'#{str.to_s}' does not match 'x.y.z' or 'x.y'"
+          raise Chef::Exceptions::InvalidCookbookVersion.new( msg )
+        end
+    end
+
+  end
+end