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index.js
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index.js
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/*!
* right-align-values <https://github.com/jonschlinkert/right-align-values>
*
* Copyright (c) 2015, Jon Schlinkert.
* Licensed under the MIT License.
*/
'use strict';
var isObject = require('isobject');
var longest = require('longest-value');
var pad = require('pad-left');
module.exports = function rightAlignValues(obj, prop) {
if (isProp(obj)) {
var temp = prop;
prop = obj;
obj = temp;
}
if (!obj || typeof obj !== 'object') {
throw new TypeError('right-align-values expects an object or array.');
}
if (Array.isArray(obj)) {
return arrayValues(obj, prop);
}
return objectValues(obj, prop);
};
function arrayValues(arr, prop) {
var max = longest(arr, prop).length;
var len = arr.length;
var res = new Array(len);
while (len--) {
var ele = arr[len];
var val = ele[prop].toString();
ele[prop] = pad(val, max, ' ');
res[len] = ele;
}
return res;
}
function objectValues(obj, prop) {
if (typeof prop !== 'undefined') {
return objectProperties(obj, prop);
}
var max = longest(obj).length;
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
var val = obj[key].toString();
obj[key] = pad(val, max, ' ');
}
}
return obj;
}
function objectProperties(obj, prop) {
if (Array.isArray(prop)) {
return eachProperty(obj, prop);
}
var longest = 0;
var res = {};
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
var val = obj[key];
if (isObject(val) && val.hasOwnProperty(prop)) {
var len = val[prop].length;
if (len > longest) {
longest = len;
}
}
}
}
Object.keys(obj).forEach(function(key) {
var val = obj[key];
res[key] = val;
if (isObject(val) && val.hasOwnProperty(prop)) {
res[key][prop] = pad(val[prop], longest, ' ');
}
});
return res;
}
function eachProperty(obj, props) {
var len = props.length, i = -1;
while (++i < len) {
obj = objectProperties(obj, props[i]);
}
return obj;
}
function isProp(val) {
if (typeof val === 'string') {
return true;
}
if (Array.isArray(val) && typeof val[0] === 'string') {
return true;
}
return false;
}