You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
1.8 KiB
104 lines
1.8 KiB
4 weeks ago
|
'use strict';
|
||
|
|
|
||
|
|
var extend = require('extend-shallow');
|
||
|
|
var regexCache = {};
|
||
|
|
var all;
|
||
|
|
|
||
|
|
var charSets = {
|
||
|
|
default: {
|
||
|
|
'"': '"',
|
||
|
|
'"': '"',
|
||
|
|
|
||
|
|
''': '\'',
|
||
|
|
''': '\'',
|
||
|
|
|
||
|
|
'&': '&',
|
||
|
|
'&': '&',
|
||
|
|
|
||
|
|
'>': '>',
|
||
|
|
'>': '>',
|
||
|
|
|
||
|
|
'<': '<',
|
||
|
|
'<': '<'
|
||
|
|
},
|
||
|
|
extras: {
|
||
|
|
'¢': '¢',
|
||
|
|
'¢': '¢',
|
||
|
|
|
||
|
|
'©': '©',
|
||
|
|
'©': '©',
|
||
|
|
|
||
|
|
'€': '€',
|
||
|
|
'€': '€',
|
||
|
|
|
||
|
|
'£': '£',
|
||
|
|
'£': '£',
|
||
|
|
|
||
|
|
'®': '®',
|
||
|
|
'®': '®',
|
||
|
|
|
||
|
|
'¥': '¥',
|
||
|
|
'¥': '¥'
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// don't merge char sets unless "all" is explicitly called
|
||
|
|
Object.defineProperty(charSets, 'all', {
|
||
|
|
get: function() {
|
||
|
|
return all || (all = extend({}, charSets.default, charSets.extras));
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Convert HTML entities to HTML characters.
|
||
|
|
*
|
||
|
|
* @param {String} `str` String with HTML entities to un-escape.
|
||
|
|
* @return {String}
|
||
|
|
*/
|
||
|
|
|
||
|
|
function unescape(str, type) {
|
||
|
|
if (!isString(str)) return '';
|
||
|
|
var chars = charSets[type || 'default'];
|
||
|
|
var regex = toRegex(type, chars);
|
||
|
|
return str.replace(regex, function(m) {
|
||
|
|
return chars[m];
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function toRegex(type, chars) {
|
||
|
|
if (regexCache[type]) {
|
||
|
|
return regexCache[type];
|
||
|
|
}
|
||
|
|
var keys = Object.keys(chars).join('|');
|
||
|
|
var regex = new RegExp('(?=(' + keys + '))\\1', 'g');
|
||
|
|
regexCache[type] = regex;
|
||
|
|
return regex;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if str is a non-empty string
|
||
|
|
*/
|
||
|
|
|
||
|
|
function isString(str) {
|
||
|
|
return str && typeof str === 'string';
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Expose charSets
|
||
|
|
*/
|
||
|
|
|
||
|
|
unescape.chars = charSets.default;
|
||
|
|
unescape.extras = charSets.extras;
|
||
|
|
// don't trip the "charSets" getter unless it's explicitly called
|
||
|
|
Object.defineProperty(unescape, 'all', {
|
||
|
|
get: function() {
|
||
|
|
return charSets.all;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Expose `unescape`
|
||
|
|
*/
|
||
|
|
|
||
|
|
module.exports = unescape;
|