a32f34b408
Knife-Zero doesn't include Berkshelf support, so vendoring everything in the repo is convenient again
52 lines
1.7 KiB
Ruby
52 lines
1.7 KiB
Ruby
#
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# Copyright 2015-2017, Noah Kantrowitz
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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module PoiseLanguages
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module Utils
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# Replacement module for Chef::Mixin::Which with a slight improvement.
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#
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# @since 1.0.0
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# @see Which#which
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module Which
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extend self
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# A replacement for Chef::Mixin::Which#which that allows using something
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# other than an environment variable if needed.
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#
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# @param cmd [String] Executable to search for.
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# @param extra_path [Array<String>] Extra directories to always search.
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# @param path [String, nil] Replacement $PATH value.
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# @return [String, false]
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def which(cmd, extra_path: %w{/bin /usr/bin /sbin /usr/sbin}, path: nil)
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# If it was already absolute, just return that.
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return cmd if cmd =~ /^(\/|([a-z]:)?\\)/i
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# Allow passing something other than the real env var.
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path ||= ENV['PATH']
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# Based on Chef::Mixin::Which#which
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# Copyright 2010-2017, Chef Softare, Inc.
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paths = path.split(File::PATH_SEPARATOR) + extra_path
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paths.each do |candidate_path|
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filename = ::File.join(candidate_path, cmd)
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return filename if ::File.executable?(filename)
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end
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false
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end
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end
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end
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end
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