Class: Amazon::Element

Inherits:
Object
  • Object
show all
Defined in:
lib/amazon/awis.rb

Overview

Internal wrapper class to provide convenient method to access Hpricot element value.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(element) ⇒ Element

Pass Hpricot::Elements object



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# File 'lib/amazon/awis.rb', line 177

def initialize(element)
  @element = element
end

Class Method Details

.get(element, path = '') ⇒ Object

Similar to #get, except an element object must be passed-in.



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# File 'lib/amazon/awis.rb', line 226

def self.get(element, path='')
  return unless element
  result = element.at(path)
  result = result.inner_html if result
  result
end

.get_array(element, path = '') ⇒ Object

Similar to #get_array, except an element object must be passed-in.



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# File 'lib/amazon/awis.rb', line 240

def self.get_array(element, path='')
  return unless element
  
  result = element/path
  if (result.is_a? Hpricot::Elements) || (result.is_a? Array)
    parsed_result = []
    result.each {|item|
      parsed_result << Element.get(item)
    }
    parsed_result
  else
    [Element.get(result)]
  end
end

.get_hash(element, path = '') ⇒ Object

Similar to #get_hash, except an element object must be passed-in.



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# File 'lib/amazon/awis.rb', line 256

def self.get_hash(element, path='')
  return unless element

  result = element.at(path)
  if result
    hash = {}
    result = result.children
    result.each do |item|
      hash[item.name.to_sym] = item.inner_html
    end 
    hash
  end
end

.get_unescaped(element, path = '') ⇒ Object

Similar to #get_unescaped, except an element object must be passed-in.



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# File 'lib/amazon/awis.rb', line 234

def self.get_unescaped(element, path='')
  result = get(element, path)
  CGI::unescapeHTML(result) if result
end

Instance Method Details

#/(path) ⇒ Object

Find Hpricot::Elements matching the given path. Example: element/“author”.



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# File 'lib/amazon/awis.rb', line 187

def /(path)
  elements = @element/path
  return nil if elements.size == 0
  elements
end

#elem ⇒ Object

Returns Hpricot::Elments object



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# File 'lib/amazon/awis.rb', line 182

def elem
  @element
end

#get(path = '') ⇒ Object

Get the text value of the given path, leave empty to retrieve current element value.



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# File 'lib/amazon/awis.rb', line 206

def get(path='')
  Element.get(@element, path)
end

#get_array(path = '') ⇒ Object

Get the array values of the given path.



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# File 'lib/amazon/awis.rb', line 216

def get_array(path='')
  Element.get_array(@element, path)
end

#get_hash(path = '') ⇒ Object

Get the children element text values in hash format with the element names as the hash keys.



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# File 'lib/amazon/awis.rb', line 221

def get_hash(path='')
  Element.get_hash(@element, path)
end

#get_unescaped(path = '') ⇒ Object

Get the unescaped HTML text of the given path.



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# File 'lib/amazon/awis.rb', line 211

def get_unescaped(path='')
  Element.get_unescaped(@element, path)
end

#search_and_convert(path) ⇒ Object

Find Hpricot::Elements matching the given path, and convert to Amazon::Element. Returns an array Amazon::Elements if more than Hpricot::Elements size is greater than 1.



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# File 'lib/amazon/awis.rb', line 195

def search_and_convert(path)
  elements = self./(path)
  return unless elements
  
  elements = elements.map{|element| Element.new(element)}
  return elements.first if elements.size == 1
  
  elements
end

#to_s ⇒ Object 



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# File 'lib/amazon/awis.rb', line 270

def to_s
  elem.to_s if elem
end