Ruby Regular expression to match a url [duplicate]

This question already has answers here: 开发者_运维问答 Closed 12 years ago.

Possible Duplicates:

Regex to match URL

regex to remove the webpage part of a url in ruby

I am in search of a regular expression for parsing all the urls in a file.

i tried many of the regular expression i got after googling but it fails in one or the other case . my idea is to write one which checks the presense of http or https at the begening and it will match everything untill it sees a blank space .

any ideas ?

NOTE : i dont need to parse the url but erase all the urls from a file or atleast make it unreadable .

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The standard URI library provides URI.regexp which is the regular expression for url string.

 require 'uri'
 string.scan(URI.regexp)

http://ruby-doc.org/stdlib/libdoc/uri/rdoc/index.html

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You can try this:

/https?:\/\/[\S]+/

The \S means any non-whitespace character.

(Rubular)