CODEWITHSUNDEEP
javascriptcoffeescriptnormalize
reco
reco

Reputation: 470

How to create a human readable normalized string?

I need to replace special characters like

in a string. what is the best way to do it?

Upvotes: 1

Views: 479

Answers (2)

Phil H
Phil H

Reputation: 20141

Consider encodeURIComponent (and the associated decode).

The example given on that w3schools page:

var uri="http://w3schools.com/my test.asp?name=ståle&car=saab";

document.write(encodeURIComponent(uri));

Output:

http%3A%2F%2Fw3schools.com%2Fmy%20test.asp%3Fname%3Dst%C3%A5le%26car%3Dsaab

Note the å in the middle becomes %C3%A5.

If you don't mind * @ - _ + . / not being encoded, there is also escape() (and unescape()).

EDIT in light of 'human-readable' requirement:

Be careful that you cover all the characters that might come up by doing an 'oe' type replacement, and that you never attempt to convert these 'readable' strings back to their original form, or you will corrupt things in the transformation. This is the point of the escape and unescape methods.

Consider applying escape/unescape after your own transform to catch any remaining unexpected characters.

Upvotes: 2

reco
reco

Reputation: 470

After googling i couldn't find anything suitable. So i ended up writing my own.

normalize = (s) ->

  mapping = 
    'ä': 'ae'
    'ö': 'oe'
    'ü': 'ue'
    '&': 'and'
    'é': 'e'
    'ë': 'e'
    'ï': 'i'
    'è': 'e'
    'à': 'a'
    'ù': 'u'
    'ç': 'c'
    "'": ''
    '´': ''

  r = new RegExp(Object.keys(mapping).join('|'), 'g')
  s.replace(r, (s)->
    mapping[s]
  )

Upvotes: 2

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