44 lines
1.2 KiB
Ruby
44 lines
1.2 KiB
Ruby
require "rubygems"
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require "rubygems/gem_runner"
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require "log4r"
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module VagrantPlugins
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module CommandPlugin
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# This class provides methods to help with calling out to the
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# `gem` command but using the RubyGems API.
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class GemHelper
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def initialize(gem_home)
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@gem_home = gem_home.to_s
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@logger = Log4r::Logger.new("vagrant::plugins::plugincommand::gemhelper")
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end
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# This will yield the given block with the proper ENV setup so
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# that RubyGems only sees the gems in the Vagrant-managed gem
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# path.
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def with_environment
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old_gem_home = ENV["GEM_HOME"]
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old_gem_path = ENV["GEM_PATH"]
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ENV["GEM_HOME"] = @gem_home
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ENV["GEM_PATH"] = @gem_home
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@logger.debug("Set GEM_* to: #{ENV["GEM_HOME"]}")
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# Clear paths so that it reads the new GEM_HOME setting
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Gem.paths = ENV
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# Use a silent UI so that we have no output
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Gem::DefaultUserInteraction.use_ui(Gem::SilentUI.new) do
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return yield
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end
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ensure
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# Restore the old GEM_* settings
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ENV["GEM_HOME"] = old_gem_home
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ENV["GEM_PATH"] = old_gem_path
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# Reset everything
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Gem.paths = ENV
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end
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end
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end
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end
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