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require "uri"
module SimpleOAuth
# OAuth percent-encoding utilities
#
# Provides methods for encoding and decoding values according to the OAuth specification.
# These methods can be used as module functions or extended into a class.
#
# @api public
# @example Using as module functions
# SimpleOAuth::Encoding.escape("hello world") # => "hello%20world"
#
# @example Extending into a class
# class MyClass
# extend SimpleOAuth::Encoding
# end
# MyClass.escape("hello world") # => "hello%20world"
module Encoding
# Characters that don't need to be escaped per OAuth spec
UNRESERVED_CHARS = /[^a-z0-9\-._~]/i
# Percent-encodes a value according to OAuth specification
#
# @api public
# @param value [String, #to_s] the value to encode
# @return [String] the percent-encoded value
# @example
# SimpleOAuth::Encoding.escape("hello world")
# # => "hello%20world"
def escape(value)
URI::RFC2396_PARSER.escape(value.to_s, UNRESERVED_CHARS)
end
alias_method :encode, :escape
# Decodes a percent-encoded value
#
# @api public
# @param value [String, #to_s] the value to decode
# @return [String] the decoded value
# @example
# SimpleOAuth::Encoding.unescape("hello%20world")
# # => "hello world"
def unescape(value)
URI::RFC2396_PARSER.unescape(value.to_s)
end
alias_method :decode, :unescape
end
end
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