Module: HTTParty::Parsers::JSON

Defined in:
lib/httparty/parsers/json.rb

Overview

:nodoc:

Defined Under Namespace

Classes: ParseError

Class Method Summary collapse

Class Method Details

.convert_json_to_yaml(json) ⇒ Object

Ensure that “:” and “,” are always followed by a space



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# File 'lib/httparty/parsers/json.rb', line 33

def self.convert_json_to_yaml(json) #:nodoc:
  scanner, quoting, marks, pos, times = StringScanner.new(json), false, [], nil, []
  while scanner.scan_until(/(\\['"]|['":,\\]|\\.)/)
    case char = scanner[1]
    when '"', "'"
      if !quoting
        quoting = char
        pos = scanner.pos
      elsif quoting == char
        if json[pos..scanner.pos-2] =~ DATE_REGEX
          # found a date, track the exact positions of the quotes so we can remove them later.
          # oh, and increment them for each current mark, each one is an extra padded space that bumps
          # the position in the final YAML output
          total_marks = marks.size
          times << pos+total_marks << scanner.pos+total_marks
        end
        quoting = false
      end
    when ":",","
      marks << scanner.pos - 1 unless quoting
    end
  end

  if marks.empty?
    json.gsub(/\\\//, '/')
  else
    left_pos  = [-1].push(*marks)
    right_pos = marks << json.length
    output    = []
    left_pos.each_with_index do |left, i|
      output << json[left.succ..right_pos[i]]
    end
    output = output * " "

    times.each { |i| output[i-1] = ' ' }
    output.gsub!(/\\\//, '/')
    output
  end
end

.decode(json) ⇒ Object 



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# File 'lib/httparty/parsers/json.rb', line 15

def self.decode(json)
  YAML.load(unescape(convert_json_to_yaml(json)))
rescue ArgumentError => e
  raise ParseError, "Invalid JSON string"
end

.unescape(str) ⇒ Object 



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# File 'lib/httparty/parsers/json.rb', line 23

def self.unescape(str)
  str.gsub(/\\u([0-9a-f]{4})/) {
    [$1.hex].pack("U")
  }
end