60 lines
1.3 KiB
Ruby
60 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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module Bundler
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class EnvironmentPreserver
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INTENTIONALLY_NIL = "BUNDLER_ENVIRONMENT_PRESERVER_INTENTIONALLY_NIL".freeze
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BUNDLER_KEYS = %w[
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BUNDLE_BIN_PATH
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BUNDLE_GEMFILE
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BUNDLER_ORIG_MANPATH
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BUNDLER_VERSION
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GEM_HOME
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GEM_PATH
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MANPATH
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PATH
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RB_USER_INSTALL
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RUBYLIB
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RUBYOPT
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].map(&:freeze).freeze
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BUNDLER_PREFIX = "BUNDLER_ORIG_".freeze
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# @param env [ENV]
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# @param keys [Array<String>]
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def initialize(env, keys)
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@original = env.to_hash
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@keys = keys
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@prefix = BUNDLER_PREFIX
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end
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# @return [Hash]
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def backup
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env = @original.clone
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@keys.each do |key|
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value = env[key]
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if !value.nil? && !value.empty?
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env[@prefix + key] ||= value
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elsif value.nil?
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env[@prefix + key] ||= INTENTIONALLY_NIL
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end
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end
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env
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end
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# @return [Hash]
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def restore
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env = @original.clone
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@keys.each do |key|
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value_original = env[@prefix + key]
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next if value_original.nil? || value_original.empty?
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if value_original == INTENTIONALLY_NIL
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env.delete(key)
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else
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env[key] = value_original
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end
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env.delete(@prefix + key)
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end
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env
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end
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end
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end
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