react-scripts
Version:
Configuration and scripts for Create React App.
79 lines (70 loc) • 1.96 kB
JavaScript
/*jslint node: true*/
require('string.prototype.codepointat');
;
/**
* regex to parse emoji in a string - finds emoji, e.g. :coffee:
*/
var parser = /:([a-zA-Z0-9_\-\+]+):/g;
/**
* Emoji namespace
*/
var Emoji = module.exports = {
emoji: require('./emoji.json')
};
/**
* get emoji code from name
* @param {string} emoji
* @return {string}
*/
Emoji._get = function _get(emoji) {
if (Emoji.emoji.hasOwnProperty(emoji)) {
return Emoji.emoji[emoji];
}
return ':' + emoji + ':';
};
/**
* get emoji code from :emoji: string or name
* @param {string} emoji
* @return {string}
*/
Emoji.get = function get(emoji) {
if (emoji.indexOf(':') > -1) {
// :emoji: (http://www.emoji-cheat-sheet.com/)
emoji = emoji.substr(1, emoji.length-2);
}
return Emoji._get(emoji);
};
/**
* get emoji name from code
* @param {string} emoji_code
* @return {string}
*/
Emoji.which = function which(emoji_code) {
for (var prop in Emoji.emoji) {
if (Emoji.emoji.hasOwnProperty(prop)) {
if (Emoji.emoji[prop].codePointAt() === emoji_code.codePointAt()) {
return prop;
}
}
}
};
/**
* emojify a string (replace :emoji: with an emoji)
* @param {string} str
* @param {function} on_missing (gets emoji name without :: and returns a proper emoji if no emoji was found)
* @return {string}
*/
Emoji.emojify = function emojify(str, on_missing) {
return str.split(parser) // parse emoji via regex
.map(function parseEmoji(s, i) {
// every second element is an emoji, e.g. "test :fast_forward:" -> [ "test ", "fast_forward" ]
if (i % 2 === 0) return s;
var emoji = Emoji._get(s);
if (emoji.indexOf(':') > -1 && typeof on_missing === 'function') {
return on_missing(emoji.substr(1, emoji.length-2));
}
return emoji;
})
.join('') // convert back to string
;
};