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module RuboCop
module Cop
# This cop prevents usage of the `git` and `github` arguments to `gem` in a
# `Gemfile` in order to avoid additional points of failure beyond
# rubygems.org.
class GemFetcher < RuboCop::Cop::Cop
MSG = 'Do not use gems from git repositories, only use gems from RubyGems.'.freeze
GIT_KEYS = [:git, :github].freeze
def on_send(node)
return unless gemfile?(node)
func_name = node.children[1]
return unless func_name == :gem
node.children.last.each_node(:pair) do |pair|
key_name = pair.children[0].children[0].to_sym
if GIT_KEYS.include?(key_name)
add_offense(node, pair.source_range, MSG)
end
end
end
private
def gemfile?(node)
node
.location
.expression
.source_buffer
.name
.end_with?("Gemfile")
end
end
end
end
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