Class: WCAPI::OpenSearchResponse

Inherits:
Object
  • Object
show all
Includes:
XPath
Defined in:
lib/wcapi/open_search_response.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from XPath

#get_attribute, #xpath, #xpath_all, #xpath_first, #xpath_get_all_text, #xpath_get_name, #xpath_get_text

Constructor Details

#initialize(doc) ⇒ OpenSearchResponse

Returns a new instance of OpenSearchResponse.



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# File 'lib/wcapi/open_search_response.rb', line 6

def initialize(doc)
  #super doc
  @raw = doc
  if doc.index('rss')
    parse_rss(doc)
  else
	parse_atom(doc)
  end
end

Instance Attribute Details

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/wcapi/open_search_response.rb', line 4

def header
  @header
end

#raw ⇒ Object

Returns the value of attribute raw.



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# File 'lib/wcapi/open_search_response.rb', line 4

def raw
  @raw
end

#records ⇒ Object

Returns the value of attribute records.



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# File 'lib/wcapi/open_search_response.rb', line 4

def records
  @records
end

Instance Method Details

#parse_atom(xml) ⇒ Object 



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# File 'lib/wcapi/open_search_response.rb', line 84

def parse_atom(xml)
   _title = ""
   #this is an array
   _author = Array.new()
   _link = ""
   _id = ""
   _citation = ""
   _summary = ""
   _xml = xml
   _record = Array.new()
   _x = 0

   begin
     require 'xml/libxml'
     _parser = LibXML::XML::Parser.new()
     _parser.string = xml
     doc = LibXML::XML::Document.new()
     doc = _parser.parse
   rescue
     begin
        require 'rexml/document'
        doc = REXML::Document.new(xml)
     rescue
        #likely some kind of xml error
     end
   end

   namespaces = {'n0' => 'http://www.w3.org/2005/Atom',
                 'opensearch' => 'http://a9.com/-/spec/opensearch/1.1/'
                }


   @header = {}
   @header["totalResults"] = xpath_get_text(xpath_first(doc, "//opensearch:totalResults"))
   @header["startIndex"] = xpath_get_text(xpath_first(doc, "//opensearch:startIndex"))
   @header["itemsPerPage"] = xpath_get_text(xpath_first(doc, "//opensearch:itemsPerPage"))

   nodes = xpath_all(doc, "//*[local-name()='entry']")
   nodes.each { |item |
	 _author = []
      _title = xpath_get_text(xpath_first(item, "*[local-name() = 'title']"))
_tmpauthor = xpath_first(item, "*[local-name() = 'author']")

      if _tmpauthor != nil
         if xpath_first(item, "*[local-name() = 'author']/*[local-name() = 'name']") != nil
           xpath_all(item, "*[local-name() = 'author']/*[local-name() = 'name']").each { |i|
             _author.push(xpath_get_text(i))
           }
         end
end

      if xpath_first(item, "*[local-name() = 'id']") != nil
        _link = xpath_get_text(xpath_first(item, "*[local-name() = 'id']"))
      end

      if _link != ''
        _id = _link.slice(_link.rindex("/")+1, _link.length-_link.rindex("/"))
      end
      if xpath_first(item, "*[local-name() = 'content']") != nil
         _citation = xpath_get_text(xpath_first(item, "*[local-name() = 'content']"))
      end

      if xpath_first(item, "*[local-name() = 'summary']") != nil
         _summary = xpath_get_text(xpath_first(item, "*[local-name() = 'summary']"))
      end
      _rechash = {:title => _title, :author => _author, :link => _link, :id => _id, :citation => _citation,
                  :summary => _summary, :xml => item.to_s}
      _record.push(_rechash)
   }
   @records = _record
end

#parse_rss(xml) ⇒ Object 



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# File 'lib/wcapi/open_search_response.rb', line 16

def parse_rss(xml)
   _title = ""
   #this is an array
   _author = Array.new()
   _link = ""
   _id = ""
   _citation = ""
   _summary = ""
   _xml = xml
   _record = Array.new()
   _x = 0

   begin
     require 'xml/libxml'
     _parser = LibXML::XML::Parser.new()
     _parser.string = xml
     doc = LibXML::XML::Document.new()
     doc = _parser.parse
   rescue
 	begin
 require 'rexml/document'
        doc = REXML::Document.new(xml)
     rescue
	   #likely some kind of xml error 
     end
   end

   namespaces = {'content' => 'http://purl.org/rss/1.0/modules/content/',
                 'atom' => 'http://www.w3.org/2005/Atom',
   'opensearch' => 'http://a9.com/-/spec/opensearch/1.1/',
   'srw' => 'http://www.loc.gov/zing/srw/'
                }

   
   @header = {}
   @header["totalResults"] = xpath_get_text(xpath_first(doc, "//opensearch:totalResults"))
   @header["startIndex"] = xpath_get_text(xpath_first(doc, "//opensearch:startIndex"))
   @header["itemsPerPage"] = xpath_get_text(xpath_first(doc, "//opensearch:itemsPerPage"))

   nodes = xpath_all(doc, "//item", namespaces)
   nodes.each { |item |
      _title = xpath_get_text(xpath_first(item, "title")) 
      if xpath_first(item, "author/name", namespaces) != nil 
         xpath_all(item, "author/name", namespaces).each { |i|
           _author.push(xpath_get_text(i))
        }
      end
      if xpath_first(item, "link", namespaces) != nil 
        _link = xpath_get_text(xpath_first(item, "link", namespaces)) 
      end

      if _link != ''
        _id = _link.slice(_link.rindex("/")+1, _link.length-_link.rindex("/"))
      end 
      if xpath_first(item, "content:encoded", namespaces) != nil 
         _citation = xpath_get_text(xpath_first(item, "content:encoded", namespaces))
      end

      if xpath_first(item, "description", namespaces) != nil
  _summary = xpath_get_text(xpath_first(item, "description", namespaces))
	 end
      _rechash = {:title => _title, :author => _author, :link => _link, :id => _id, :citation => _citation, 
    :summary => _summary, :xml => item.to_s}
      _record.push(_rechash)
   }
   @records = _record
end