Class: Nibbler::JsonDocument

Inherits:
Object
  • Object
show all
Defined in:
lib/nibbler/json.rb

Overview

a wrapper for JSON data that provides ‘at` and `search`

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(obj, root = nil) ⇒ JsonDocument

Returns a new instance of JsonDocument.



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# File 'lib/nibbler/json.rb', line 8

def initialize(obj, root = nil)
  @data = obj.respond_to?(:to_str) ? JSON.parse(obj) : obj
  @root = root
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/nibbler/json.rb', line 6

def data
  @data
end

Instance Method Details

#at(selector) ⇒ Object 



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# File 'lib/nibbler/json.rb', line 28

def at(selector)
  search(selector).first
end

#root ⇒ Object 



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# File 'lib/nibbler/json.rb', line 13

def root
  @root || data
end

#search(selector) ⇒ Object 



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# File 'lib/nibbler/json.rb', line 17

def search(selector)
  if selector !~ /[^\w-]/
    found = Array === data ? data : data[selector]
    found = [] if found.nil?
    found = [found] unless Array === found
  else
    found = scan_selector selector
  end
  found
end