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module Sprockets
# Public: .jst engine.
#
# Exports server side compiled templates to an object.
#
# Name your template "users/show.jst.ejs", "users/new.jst.eco", etc.
#
# To accept the default options
#
# environment.register_engine '.jst',
# JstProcessor,
# mime_type: 'application/javascript'
#
# Change the default namespace.
#
# environment.register_engine '.jst',
# JstProcessor.new(namespace: 'App.templates'),
# mime_type: 'application/javascript'
#
class JstProcessor
def self.default_namespace
'this.JST'
end
# Public: Return singleton instance with default options.
#
# Returns JstProcessor object.
def self.instance
@instance ||= new
end
def self.call(input)
instance.call(input)
end
def initialize(options = {})
@namespace = options[:namespace] || self.class.default_namespace
end
def call(input)
data = input[:data].gsub(/$(.)/m, "\\1 ").strip
key = input[:name]
<<-JST
(function() { #{@namespace} || (#{@namespace} = {}); #{@namespace}[#{key.inspect}] = #{data};
}).call(this);
JST
end
end
end
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