Class: Mechanize::Page::MetaRefresh

Inherits:
Link
  • Object
show all
Defined in:
lib/mechanize/page/meta_refresh.rb

Overview

This class encapsulates a meta element with a refresh http-equiv. Mechanize treats meta refresh elements just like ‘a’ tags. MetaRefresh objects will contain links, but most likely will have no text.

Constant Summary collapse

CONTENT_REGEXP =

Matches the content attribute of a meta refresh element. After the match:

$1:: delay
$3:: url

/^\s*(\d+\.?\d*)\s*(?:;(?:\s*url\s*=\s*(['"]?)(\S*)\2)?\s*)?$/i
UNSAFE =

Regexp of unsafe URI characters that excludes % for Issue #177

/[^\-_.!~*'()a-zA-Z\d;\/?:@&%=+$,\[\]]/

Instance Attribute Summary collapse

Attributes inherited from Link

#attributes, #href, #node, #page

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Link

#click, #dom_class, #dom_id, #pretty_print, #rel, #rel?, #resolved_uri, #text, #uri

Constructor Details

#initialize(node, page, delay, href, link_self = false) ⇒ MetaRefresh

Returns a new instance of MetaRefresh.



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# File 'lib/mechanize/page/meta_refresh.rb', line 67

def initialize node, page, delay, href, link_self = false
  super node, page.mech, page

  @delay     = delay.include?(?.) ? delay.to_f : delay.to_i
  @href      = href
  @link_self = link_self
end

Instance Attribute Details

#delay ⇒ Object (readonly)

Time to wait before next refresh



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# File 'lib/mechanize/page/meta_refresh.rb', line 12

def delay
  @delay
end

#link_self ⇒ Object (readonly)

This MetaRefresh links did not contain a url= in the content attribute and links to itself.



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# File 'lib/mechanize/page/meta_refresh.rb', line 18

def link_self
  @link_self
end

Class Method Details

.from_node(node, page, uri = nil) ⇒ Object 



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# File 'lib/mechanize/page/meta_refresh.rb', line 56

def self.from_node node, page, uri = nil
  http_equiv = node['http-equiv'] and
    /\ARefresh\z/i =~ http_equiv or return

  delay, uri, link_self = parse node['content'], uri

  return unless delay

  new node, page, delay, uri, link_self
end

.parse(content, base_uri = nil) ⇒ Object

Parses the delay and url from the content attribute of a meta refresh element.

Returns an array of [delay, url, link_self], where the first two are strings containing the respective parts of the refresh value, and link_self is a boolean value that indicates whether the url part is missing or empty. If base_uri, the URI of the current page is given, the value of url becomes an absolute URI.



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# File 'lib/mechanize/page/meta_refresh.rb', line 43

def self.parse content, base_uri = nil
  m = CONTENT_REGEXP.match(content) or return

  delay, url = m[1], m[3]
  url &&= url.empty? ? nil : Mechanize::Util.uri_escape(url, UNSAFE)
  link_self = url.nil?
  if base_uri
    url = url ? base_uri + url : base_uri
  end

  return delay, url, link_self
end

Instance Method Details

#noreferrer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mechanize/page/meta_refresh.rb', line 75

def noreferrer?
  true
end