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pad.js
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pad.js
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var makeString = require('./helper/makeString');
var strRepeat = require('./helper/strRepeat');
module.exports = function pad(str, length, padStr, type) {
str = makeString(str);
length = ~~length;
var padlen = 0;
if (!padStr)
padStr = ' ';
else if (padStr.length > 1)
padStr = padStr.charAt(0);
switch (type) {
case 'right':
padlen = length - str.length;
return str + strRepeat(padStr, padlen);
case 'both':
padlen = length - str.length;
return strRepeat(padStr, Math.ceil(padlen / 2)) + str + strRepeat(padStr, Math.floor(padlen / 2));
default: // 'left'
padlen = length - str.length;
return strRepeat(padStr, padlen) + str;
}
};