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49824e8ad6
[#2849 state:resolved]
224 lines
5.8 KiB
Ruby
224 lines
5.8 KiB
Ruby
# encoding: utf-8
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require 'active_support/core_ext/array/wrap'
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require 'active_support/core_ext/hash/except'
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require 'active_support/core_ext/hash/slice'
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require 'active_support/core_ext/module/delegation'
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require 'active_support/core_ext/object/instance_variables'
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require 'active_support/deprecation'
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require 'active_support/core_ext/date_time/conversions'
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require 'active_support/core_ext/time/conversions'
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require 'active_support/time_with_zone'
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require 'active_support/values/time_zone'
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# Hack to load json gem first so we can overwrite its to_json.
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begin
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require 'json'
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rescue LoadError
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end
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module ActiveSupport
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class << self
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delegate :use_standard_json_time_format, :use_standard_json_time_format=,
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:escape_html_entities_in_json, :escape_html_entities_in_json=,
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:to => :'ActiveSupport::JSON::Encoding'
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end
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module JSON
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# matches YAML-formatted dates
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DATE_REGEX = /^(?:\d{4}-\d{2}-\d{2}|\d{4}-\d{1,2}-\d{1,2}[ \t]+\d{1,2}:\d{2}:\d{2}(\.[0-9]*)?(([ \t]*)Z|[-+]\d{2}?(:\d{2})?))$/
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# Dumps object in JSON (JavaScript Object Notation). See www.json.org for more info.
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def self.encode(value, options = nil)
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Encoding::Encoder.new(options).encode(value)
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end
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module Encoding #:nodoc:
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class CircularReferenceError < StandardError; end
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class Encoder
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attr_reader :options
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def initialize(options = nil)
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@options = options
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@seen = []
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end
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def encode(value)
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check_for_circular_references(value) do
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value.as_json(options).encode_json(self)
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end
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end
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def escape(string)
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Encoding.escape(string)
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end
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private
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def check_for_circular_references(value)
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if @seen.any? { |object| object.equal?(value) }
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raise CircularReferenceError, 'object references itself'
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end
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@seen.unshift value
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yield
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ensure
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@seen.shift
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end
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end
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ESCAPED_CHARS = {
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"\010" => '\b',
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"\f" => '\f',
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"\n" => '\n',
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"\r" => '\r',
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"\t" => '\t',
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'"' => '\"',
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'\\' => '\\\\',
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'>' => '\u003E',
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'<' => '\u003C',
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'&' => '\u0026' }
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class << self
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# If true, use ISO 8601 format for dates and times. Otherwise, fall back to the Active Support legacy format.
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attr_accessor :use_standard_json_time_format
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attr_accessor :escape_regex
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attr_reader :escape_html_entities_in_json
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def escape_html_entities_in_json=(value)
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self.escape_regex = \
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if @escape_html_entities_in_json = value
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/[\010\f\n\r\t"\\><&]/
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else
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/[\010\f\n\r\t"\\]/
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end
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end
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def escape(string)
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string = string.dup.force_encoding(::Encoding::BINARY) if string.respond_to?(:force_encoding)
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json = string.
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gsub(escape_regex) { |s| ESCAPED_CHARS[s] }.
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gsub(/([\xC0-\xDF][\x80-\xBF]|
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[\xE0-\xEF][\x80-\xBF]{2}|
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[\xF0-\xF7][\x80-\xBF]{3})+/nx) { |s|
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s.unpack("U*").pack("n*").unpack("H*")[0].gsub(/.{4}/n, '\\\\u\&')
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}
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%("#{json}")
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end
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end
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self.escape_html_entities_in_json = true
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end
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CircularReferenceError = Deprecation::DeprecatedConstantProxy.new('ActiveSupport::JSON::CircularReferenceError', Encoding::CircularReferenceError)
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end
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end
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class Object
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# Dumps object in JSON (JavaScript Object Notation). See www.json.org for more info.
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def to_json(options = nil)
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ActiveSupport::JSON.encode(self, options)
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end
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def as_json(options = nil) instance_values end #:nodoc:
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end
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# A string that returns itself as its JSON-encoded form.
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class ActiveSupport::JSON::Variable < String
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def as_json(options = nil) self end #:nodoc:
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def encode_json(encoder) self end #:nodoc:
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end
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class TrueClass
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AS_JSON = ActiveSupport::JSON::Variable.new('true').freeze
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def as_json(options = nil) AS_JSON end #:nodoc:
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end
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class FalseClass
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AS_JSON = ActiveSupport::JSON::Variable.new('false').freeze
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def as_json(options = nil) AS_JSON end #:nodoc:
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end
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class NilClass
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AS_JSON = ActiveSupport::JSON::Variable.new('null').freeze
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def as_json(options = nil) AS_JSON end #:nodoc:
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end
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class String
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def as_json(options = nil) self end #:nodoc:
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def encode_json(encoder) encoder.escape(self) end #:nodoc:
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end
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class Symbol
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def as_json(options = nil) to_s end #:nodoc:
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end
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class Numeric
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def as_json(options = nil) self end #:nodoc:
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def encode_json(encoder) to_s end #:nodoc:
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end
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class Regexp
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def as_json(options = nil) self end #:nodoc:
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def encode_json(encoder) inspect end #:nodoc:
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end
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module Enumerable
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def as_json(options = nil) to_a end #:nodoc:
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end
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class Array
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def as_json(options = nil) self end #:nodoc:
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def encode_json(encoder) "[#{map { |v| encoder.encode(v) } * ','}]" end #:nodoc:
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end
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class Hash
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def as_json(options = nil) #:nodoc:
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if options
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if attrs = options[:only]
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slice(*Array.wrap(attrs))
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elsif attrs = options[:except]
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except(*Array.wrap(attrs))
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else
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self
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end
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else
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self
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end
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end
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def encode_json(encoder)
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"{#{map { |k,v| "#{encoder.encode(k.to_s)}:#{encoder.encode(v)}" } * ','}}"
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end
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end
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class Time
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def as_json(options = nil) #:nodoc:
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if ActiveSupport.use_standard_json_time_format
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xmlschema
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else
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%(#{strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)})
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end
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end
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end
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class Date
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def as_json(options = nil) #:nodoc:
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if ActiveSupport.use_standard_json_time_format
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strftime("%Y-%m-%d")
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else
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strftime("%Y/%m/%d")
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end
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end
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end
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class DateTime
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def as_json(options = nil) #:nodoc:
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if ActiveSupport.use_standard_json_time_format
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xmlschema
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else
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strftime('%Y/%m/%d %H:%M:%S %z')
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end
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end
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end
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