Method: Flatfish::Url.absolutify

Defined in:
lib/flatfish/url.rb

.absolutify(url, cd) ⇒ Object

take a URL, return an absolute URL



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# File 'lib/flatfish/url.rb', line 26

def absolutify url, cd 
  url = url.to_s
  # deal w/ bad URLs, already absolute, etc
  begin
    u = URI.parse(url)
  rescue
    # GIGO, no need for alarm
    return url
  end

  return url if u.absolute? # http://example.com/about
  c = URI.parse(cd)
  return c.scheme + "://" + c.host + url if url.index('/') == 0 # /about
  return cd + url if url.match(/^[a-zA-Z]+/) # about*

  # only relative from here on in; ../about, ./about, ../../about
  u_dirs = u.path.split('/')
  c_dirs = c.path.split('/')

  # move up the directory until there are no more relative paths
  u.path.split('/').each do |x|
    break unless (x == '' || x == '..' || x == '.')
    u_dirs.shift
    c_dirs.pop unless x == '.'
  end
  return c.scheme + "://" + c.host + c_dirs.join('/') + '/' +  u_dirs.join('/')
end