util.js

import React from 'react';

const urlMatchingRegex = new RegExp(/(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]+-?)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?/, 'ig');

export function tryParseJSON(jsonString) {
    try {
        var retObject = JSON.parse(jsonString);

        // Handle non-exception-throwing cases:
        // Neither JSON.parse(false) or JSON.parse(1234) throw errors, hence the type-checking,
        // but... JSON.parse(null) returns null, and typeof null === "object",
        // so we must check for that, too. Thankfully, null is falsey, so this suffices:
        if(retObject && typeof retObject === 'object') {
            return retObject;
        }
    } catch(e) {
        return false;
    }
    return false;
}

export function getMessageWithLinks(message) {
    let tokens = message.split(/\s/);

    let i = 0;
    let parts = tokens.map(token => {
        if(token.match(urlMatchingRegex)) {
            return <a key={ `link-${i++}` } href={ token } target='_blank'>{ token }</a>;
        }

        return token + ' ';
    });

    return parts;
}