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# Author:: Seth Falcon (<seth@chef.io>)
# Author:: Christopher Walters (<cw@chef.io>)
# Copyright:: Copyright 2010-2016, Chef Software 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 <=>(other)
[:major, :minor, :patch].each do |method|
version = send(method)
begin
ans = (version <=> other.send(method))
rescue NoMethodError # if the other thing isn't a version object, return nil
return nil
end
return ans unless 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
protected
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}' does not match 'x.y.z' or 'x.y'"
raise Chef::Exceptions::InvalidCookbookVersion.new( msg )
end
end
end
end
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