1 var createPadding = require('./_createPadding'),
2 stringSize = require('./_stringSize'),
3 toInteger = require('./toInteger'),
4 toString = require('./toString');
6 /* Built-in method references for those with the same name as other `lodash` methods. */
7 var nativeCeil = Math.ceil,
8 nativeFloor = Math.floor;
11 * Pads `string` on the left and right sides if it's shorter than `length`.
12 * Padding characters are truncated if they can't be evenly divided by `length`.
17 * @param {string} [string=''] The string to pad.
18 * @param {number} [length=0] The padding length.
19 * @param {string} [chars=' '] The string used as padding.
20 * @returns {string} Returns the padded string.
26 * _.pad('abc', 8, '_-');
32 function pad(string, length, chars) {
33 string = toString(string);
34 length = toInteger(length);
36 var strLength = stringSize(string);
37 if (!length || strLength >= length) {
40 var mid = (length - strLength) / 2,
41 leftLength = nativeFloor(mid),
42 rightLength = nativeCeil(mid);
44 return createPadding('', leftLength, chars) + string + createPadding('', rightLength, chars);