Question

i want to replace the “.” into tokens like [dot] from below input to below output

input

this is a test.for a question. at stackoverflow.com the best place to learn. programming. test http://www.wikipedia.com

output

this is a test.for a question. at stackoverflow[dot]com the best place to learn. programming. test www[dot]wikipedia[dot]com

problems

1. there is a possibly test.for we cant use good regex like /[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}/gi i think its best for using something like below better
2. maybe i found a solution;

found = string.match(/([a-zA-Z0-9]+\.(com|co\.cc)|more\.domains)/gi);

this work great, i have a problem to join/replace them to the original string. any workarounds like how can we filter elements in array with regex in array with javascript?

how would you tackle this problem? btw im using nodejs other language is acceptable.

thanks

Answer 1

This handles www.example.com correctly:

tld = ["com", "org", "edu", "net"] // feel free to add more

var input = "this is a test.for a question. at www.stackoverflow.com " 
    + "the best place to learn. "
    + "programming.test wikipedia.com and windows.microsoft.edu";


re = new RegExp('\\S+\\.(' + tld.join('|') + ')\\b', 'g')

var dotted = input.replace(re, function($0) {
    return $0.replace(/\./g, "[dot]");
});

// this is a test.for a question. at www[dot]stackoverflow[dot]com the best place to learn. 
// programming.test wikipedia[dot]com and windows[dot]microsoft[dot]edu