Ruby: Escape, Unescape, Encode, Decode, HTML, XML, URI, URL

sikelianos (Zeke Sikelianos) — Tue, 26 Feb 2008 23:23:08 GMT

This example will show you how to escape and un-escape a value to be included in a URI and within HTML.



require 'cgi'



# escape

name = "ruby?"

value = "yes"

url = "http://example.com/?" + CGI.escape(name) + '=' + CGI.escape(value) + "&var=T"

# url: http://example.com/?ruby%3F=yes&var=T

html = %(example)

# html: example



# unescape

name_encoded = html.match(/http:([^"]+)/)[0]

# name_encoded: http://example.com/?ruby%3F=yes&var=T

href = CGI.unescapeHTML(name_encoded)

# href: http://example.com/?ruby%3F=yes&var=T

query = href.match(/\?(.*)$/)[1]

# query: ruby%3F=yes&var=T

pairs = query.split('&')

# pairs: ["ruby%3F=yes", "var=T"]

name, value = pairs[0].split('=').map{|v| CGI.unescape(v)}

# name, value: ["ruby?", "yes"]

Nice post slug

sligowaths (Tiago Serafim) — Thu, 10 Aug 2006 00:09:27 GMT

This code replaces accents to normal chars(e.g "Ã¡" => "a"), everything that isnÂ´t in "a-zA-Z0-9" to "", multiples spaces to one space, and one space to "-".

This is useful to make URLs from titles, like Netscape.com does...

"A new report recommends only work 4 -6 hrs a day" => "A-new-report-recommends-only-work-4-6-hrs-a-day"

"Video: \"Popular Mechanics\" editor debunks 9/11 myths" => "Video-Popular-Mechanics-editor-debunks-911-myths"

etc..
The code is 95% based on http://textsnippets.com/posts/show/451



def self.nice_slug(str)

		

		accents = { 

		  ['Ã¡','Ã ','Ã¢','Ã¤','Ã£'] => 'a',

		  ['Ãƒ','Ã„','Ã‚','Ã€','Ã?'] => 'A',

		  ['Ã©','Ã¨','Ãª','Ã«'] => 'e',

		  ['Ã‹','Ã‰','Ãˆ','ÃŠ'] => 'E',

		  ['Ã','Ã¬','Ã®','Ã¯'] => 'i',

		  ['Ã?','ÃŽ','ÃŒ','Ã?'] => 'I',

		  ['Ã³','Ã²','Ã´','Ã¶','Ãµ'] => 'o',

		  ['Ã•','Ã–','Ã”','Ã’','Ã“'] => 'O',

		  ['Ãº','Ã¹','Ã»','Ã¼'] => 'u',

		  ['Ãš','Ã›','Ã™','Ãœ'] => 'U',

		  ['Ã§'] => 'c', ['Ã‡'] => 'C',

		  ['Ã±'] => 'n', ['Ã‘'] => 'N'

		  }

		accents.each do |ac,rep|

		  ac.each do |s|

			str = str.gsub(s, rep)

		  end

		end

		str = str.gsub(/[^a-zA-Z0-9 ]/,"")

		

		str = str.gsub(/[ ]+/," ")

		



		str = str.gsub(/ /,"-")

		

		#str = str.downcase



	end

DZone Snippets: slug code

Ruby: Escape, Unescape, Encode, Decode, HTML, XML, URI, URL

Nice post slug