Class: JsonPaths

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/json_paths.rb,
lib/json_paths/version.rb

Constant Summary collapse

VERSION = 
"0.0.5"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(json) ⇒ JsonPaths

Returns a new instance of JsonPaths.



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# File 'lib/json_paths.rb', line 10

def initialize(json)
  @json = json

  @paths = json_to_paths
end

Instance Attribute Details

#json ⇒ Object (readonly)

Returns the value of attribute json.



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# File 'lib/json_paths.rb', line 7

def json
  @json
end

#paths ⇒ Object (readonly)

Returns the value of attribute paths.



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# File 'lib/json_paths.rb', line 8

def paths
  @paths
end

Instance Method Details

#each ⇒ Object 



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# File 'lib/json_paths.rb', line 16

def each
  paths.each
end

#json_to_paths ⇒ Object 



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# File 'lib/json_paths.rb', line 20

def json_to_paths
  parsed_json = JSON.parse(json)
  paths = []

  parsed_json.each_key do |key|
    paths << key_to_path(parsed_json, key)
  end

  paths.flatten.map { |path| "$." + path }
end

#key_to_path(hash, key) ⇒ Object 



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# File 'lib/json_paths.rb', line 31

def key_to_path(hash, key)
  paths_for_key = []
  value = hash[key]

  if value.respond_to?(:keys)
    value.each_key do |k|
      paths_for_key << key_to_path(value, k).map do |ktp|
        ktp = ktp.first unless ktp.is_a?(String)
        key + "." + ktp
      end
    end
  elsif value.respond_to?(:each_with_index)
    value.each_with_index do |v,i|
      paths_for_key << JsonPaths.new(v.to_json).paths.map do |j|
        "#{key}[#{i}].#{j.gsub('$.', '')}"
      end
    end
  else
    paths_for_key << key.to_s
  end

  paths_for_key
end