从ruby中的字符串中删除子域 [英] Remove subdomain from string in ruby

问题描述

我正在循环一系列的URL，并想清理它们。我有以下代码：

 ＃解析url以删除http，路径和检查格式
 o_url = URI.parse （node.attributes ['href']）
 
＃删除www 
 new_url = o_url.host.gsub（'www。'，''）.strip 
  

如何将其扩展为删除某些URL中存在的子域？

解决方案

我刚刚写了一个名为Domainatrix的图书馆。您可以在这里找到： http://github.com/pauldix/domainatrix

  require'rubygems'
 require'domainatrix'
 
 url = Domainatrix.parse（http：// www .pauldix.net）
 url.public_suffix＃=> net
 url.domain＃=> pauldix
 url.canonical＃=> net.pauldix
 
 url = Domainatrix.parse（http://foo.bar.pauldix.co.uk/asdf.html?q=arg）
 url.public_suffix ＃=> co.uk
 url.domain＃=> pauldix
 url.subdomain＃=> foo.bar
 url.path＃=> /asdf.html?q=arg
 url.canonical＃=> uk.co.pauldix.bar.foo/asdf.html?q=arg
  

I'm looping over a series of URLs and want to clean them up. I have the following code:

# Parse url to remove http, path and check format
o_url = URI.parse(node.attributes['href'])

# Remove www
new_url = o_url.host.gsub('www.', '').strip

How can I extend this to remove the subdomains that exist in some URLs?

解决方案

I just wrote a library to do this called Domainatrix. You can find it here: http://github.com/pauldix/domainatrix

require 'rubygems'
require 'domainatrix'

url = Domainatrix.parse("http://www.pauldix.net")
url.public_suffix       # => "net"
url.domain    # => "pauldix"
url.canonical # => "net.pauldix"

url = Domainatrix.parse("http://foo.bar.pauldix.co.uk/asdf.html?q=arg")
url.public_suffix       # => "co.uk"
url.domain    # => "pauldix"
url.subdomain # => "foo.bar"
url.path      # => "/asdf.html?q=arg"
url.canonical # => "uk.co.pauldix.bar.foo/asdf.html?q=arg"

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