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# frozen_string_literal: true
module Temple
module Filters
# Try to encode input string
#
# @api public
class Encoding < Parser
define_options encoding: 'utf-8'
def call(s)
if options[:encoding] && s.respond_to?(:encoding)
old_enc = s.encoding
s = +s
s.force_encoding(options[:encoding])
# Fall back to old encoding if new encoding is invalid
unless s.valid_encoding?
s.force_encoding(old_enc)
s.force_encoding(::Encoding::BINARY) unless s.valid_encoding?
end
end
s
end
end
end
end
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