Class: PolyrexLinks

Inherits:
Polyrex
  • Object
show all
Defined in:
lib/polyrex-links.rb

Instance Method Summary collapse

Constructor Details

#initialize(rawx = 'links/link[title,url]', delimiter: ' # ', debug: false) ⇒ PolyrexLinks

Returns a new instance of PolyrexLinks.



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# File 'lib/polyrex-links.rb', line 9

def initialize(rawx='links/link[title,url]', delimiter: ' # ', debug: false)
  
  x, _ = RXFHelper.read(rawx)
  obj = x.lstrip.sub(/<\?polyrex-links\?>/, 
                '<?polyrex schema="links/link[title,url]" delimiter=" # "?>')
  puts 'obj: ' + x.inspect if debug
  
  super(obj)
  @delimiter = self.delimiter = delimiter
  @debug = debug
  
end

Instance Method Details

#find(s) ⇒ Object 



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# File 'lib/polyrex-links.rb', line 22

def find(s)
  
  found = find_by_link_title s
  
  if found then
    
    path = backtrack_path found 
    [link(path.join('/')), path.join('/')]
    
  end
  
end

#index ⇒ Object

returns a listing of all links sorted by title in alphabetical order



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# File 'lib/polyrex-links.rb', line 37

def index()
  
  a = []
  each_recursive {|link|  a << [link.title, link.url, backtrack_path(link)] }
  a.sort_by {|title, _, _| title.downcase}
  
end

#link(s) ⇒ Object

Returns the Polyrex element for the given path



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# File 'lib/polyrex-links.rb', line 62

def link(s)
  
  self.rxpath(s.split('/').map {|x| "link[title='%s']" % x}.join('/')).first
  
end

#locate(raw_path) ⇒ Object

Returns the url and remaining arguments for the given path



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# File 'lib/polyrex-links.rb', line 70

def locate(raw_path)
 
  return nil if raw_path.nil? or raw_path.strip.empty?
  path = raw_path.sub(/^\//,'')
  a = path.split('/')
  a2 = []
  (a2 << a.clone; a.pop) while a.any?
  return nil if a2.empty?
  
  mask = "records/link[summary/title='%s']"
  
  begin 
    c = a2.shift; xpath = c.map{|x| mask % x}.join + '/summary/url/text()'
    r = self.element xpath 
  end until r or a2.empty?
  
  # return the found path along with any remaining string which 
  #   it didn't find, or it will return nil.
  
  puts "c: %s\npath: %s\nr: %s" % [c, path, r].map(&:inspect) if @debug

  r ? [r, path.sub(c.join('/'),'')] : nil
end

#migrate(raws) ⇒ Object 



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# File 'lib/polyrex-links.rb', line 45

def migrate(raws)
  
  s, _ = RXFHelper.read(raws)
  pl = PolyrexLinks.new("<?polyrex-links?>\n\n" + 
                        s.sub(/<\?[^\?]+\?>/,'').lstrip)
        
  pl.each_recursive do |x|
    link, linkpath = find(x.title)
    x.url = link.url if link and link.url
  end
  
  pl
  
end

#save(filepath) ⇒ Object 



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# File 'lib/polyrex-links.rb', line 94

def save(filepath)
  
  super(filepath)
  export(filepath.sub(/\.xml$/,'.txt'))
  
end

#to_h ⇒ Object

Return a flat Hash object containing all the links. The link path is used as the key and the value is the url



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# File 'lib/polyrex-links.rb', line 105

def to_h()
  
  h = {}
  
  each_link {|key, value| h[key] = value }
  h
  
end

#to_s ⇒ Object 



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# File 'lib/polyrex-links.rb', line 114

def to_s()
  "<?polyrex-links?>\n\n" + super(header: false)
end