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# frozen_string_literal: true
require 'erb'
class Sprockets::ERBProcessor
# Public: Return singleton instance with default options.
#
# Returns ERBProcessor object.
def self.instance
@instance ||= new
end
def self.call(input)
instance.call(input)
end
def initialize(&block)
@block = block
end
def call(input)
if keyword_constructor? # Ruby 2.6+
engine = ::ERB.new(input[:data], trim_mode: '<>')
else
engine = ::ERB.new(input[:data], nil, '<>')
end
engine.filename = input[:filename]
context = input[:environment].context_class.new(input)
klass = (class << context; self; end)
klass.const_set(:ENV, context.env_proxy)
klass.class_eval(&@block) if @block
data = engine.result(context.instance_eval('binding'))
context.metadata.merge(data: data)
end
private
def keyword_constructor?
return @keyword_constructor if defined? @keyword_constructor
@keyword_constructor = ::ERB.instance_method(:initialize).parameters.include?([:key, :trim_mode])
end
end
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