ruby--ruby/lib/yaml/encoding.rb

#
# Handle Unicode-to-Internal conversion
#

module YAML

	#
	# Escape the string, condensing common escapes
	#
	def YAML.escape( value )
		value.gsub( /\\/, "\\\\\\" ).gsub( /"/, "\\\"" ).gsub( /([\x00-\x1f])/ ) { |x| ESCAPES[ x.unpack("C")[0] ] }
	end

	#
	# Unescape the condenses escapes
	#
	def YAML.unescape( value )
		value.gsub( /\\(?:([nevfbart\\])|0?x([0-9a-fA-F]{2})|u([0-9a-fA-F]{4}))/ ) { |x| 
			if $3
				["#$3".hex ].pack('U*')
			elsif $2
				[$2].pack( "H2" ) 
			else
				UNESCAPES[$1] 
			end
		}
	end

end