Class: OPDS::Support::Browser

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/opds/support/browser.rb

Overview

Browser class, it will be used to access the Internet. Currently based on open-uri only

Instance Method Summary collapse

Methods included from Logging

#log, log

Instance Method Details

#body ⇒ String

Returns Last page body.

Returns:

  • (String) —

    Last page body



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# File 'lib/opds/support/browser.rb', line 46

def body
  @last_response.body if @last_response
end

#current_location ⇒ String

Returns current uri.

Returns:

  • (String) —

    current uri



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# File 'lib/opds/support/browser.rb', line 51

def current_location
  @current_location
end

#discover(url) ⇒ OPDS::Support::LinkSet, false

Try to discover catalog links at the given url

Parameters:

  • url (String) —

    to search

Returns:



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# File 'lib/opds/support/browser.rb', line 58

def discover(url)
  go_to(url)
  if ok?
    doc=Nokogiri::HTML(body)
    tab=OPDS::Support::LinkSet.new(self)
    extract_links(tab,doc,'//*[@type="application/atom+xml;type=entry;profile=opds-catalog"]')    
    extract_links(tab,doc,'//*[@type="application/atom+xml;profile=opds-catalog"]')

    return false if tab.size == 0
    tab
  else
    return false
  end

end

#go_to(uri) ⇒ Object

Navigate to the provided uri

Parameters:

  • uri (String) —

    uri to go to



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# File 'lib/opds/support/browser.rb', line 11

def go_to(uri)
  log("Accessing #{uri}")
  url=URI.parse(uri)
  @last_response=nil
  Net::HTTP.start(url.host,url.port) {|http|
    path="/"
    path=url.path unless url.path==''
    req = Net::HTTP::Get.new(path)
    #         req.basic_auth user,pass  unless user.nil?
    @last_response = http.request(req)
  }
  @current_location=url.to_s
  if status/10==30 && headers['location']
    log("Following redirection (code: #{status}) to #{headers['location']}")
    go_to(headers['location'].first)
  end
end

#headers ⇒ Hash

Returns Last page HTTP headers.

Returns:

  • (Hash) —

    Last page HTTP headers



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# File 'lib/opds/support/browser.rb', line 41

def headers
  @last_response.to_hash if @last_response
end

#ok? ⇒ boolean

Last page load was ok ?

Returns:

  • (boolean) 


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# File 'lib/opds/support/browser.rb', line 31

def ok?
  status==200
end

#status ⇒ integer

Returns Last page load return code.

Returns:

  • (integer) —

    Last page load return code



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# File 'lib/opds/support/browser.rb', line 36

def status
  @last_response.code.to_i if @last_response
end