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#--
# Author:: Lamont Granquist <lamont@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
module Mixin
module Which
def which(*cmds, extra_path: nil, &block)
where(*cmds, extra_path: extra_path, &block).first
end
def where(*cmds, extra_path: nil, &block)
# NOTE: unnecessarily duplicates function of path_sanity
extra_path ||= [ "/bin", "/usr/bin", "/sbin", "/usr/sbin" ]
cmds.map do |cmd|
paths = ENV["PATH"].split(File::PATH_SEPARATOR) + extra_path
paths.map do |path|
filename = Chef.path_to(File.join(path, cmd))
filename if valid_executable?(filename, &block)
end.compact
end.flatten
end
private
def valid_executable?(filename, &block)
return false unless File.executable?(filename) && !File.directory?(filename)
block ? yield(filename) : true
end
end
end
end
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