1 | 'use strict';
|
2 | var isObj = require('is-obj');
|
3 |
|
4 | module.exports.get = function (obj, path) {
|
5 | if (!isObj(obj) || typeof path !== 'string') {
|
6 | return obj;
|
7 | }
|
8 |
|
9 | var pathArr = getPathSegments(path);
|
10 |
|
11 | for (var i = 0; i < pathArr.length; i++) {
|
12 | obj = obj[pathArr[i]];
|
13 |
|
14 | if (obj === undefined) {
|
15 | break;
|
16 | }
|
17 | }
|
18 |
|
19 | return obj;
|
20 | };
|
21 |
|
22 | module.exports.set = function (obj, path, value) {
|
23 | if (!isObj(obj) || typeof path !== 'string') {
|
24 | return;
|
25 | }
|
26 |
|
27 | var pathArr = getPathSegments(path);
|
28 |
|
29 | for (var i = 0; i < pathArr.length; i++) {
|
30 | var p = pathArr[i];
|
31 |
|
32 | if (!isObj(obj[p])) {
|
33 | obj[p] = {};
|
34 | }
|
35 |
|
36 | if (i === pathArr.length - 1) {
|
37 | obj[p] = value;
|
38 | }
|
39 |
|
40 | obj = obj[p];
|
41 | }
|
42 | };
|
43 |
|
44 | module.exports.delete = function (obj, path) {
|
45 | if (!isObj(obj) || typeof path !== 'string') {
|
46 | return;
|
47 | }
|
48 |
|
49 | var pathArr = getPathSegments(path);
|
50 |
|
51 | for (var i = 0; i < pathArr.length; i++) {
|
52 | var p = pathArr[i];
|
53 |
|
54 | if (i === pathArr.length - 1) {
|
55 | delete obj[p];
|
56 | return;
|
57 | }
|
58 |
|
59 | obj = obj[p];
|
60 | }
|
61 | };
|
62 |
|
63 | module.exports.has = function (obj, path) {
|
64 | if (!isObj(obj) || typeof path !== 'string') {
|
65 | return false;
|
66 | }
|
67 |
|
68 | var pathArr = getPathSegments(path);
|
69 |
|
70 | for (var i = 0; i < pathArr.length; i++) {
|
71 | obj = obj[pathArr[i]];
|
72 |
|
73 | if (obj === undefined) {
|
74 | return false;
|
75 | }
|
76 | }
|
77 |
|
78 | return true;
|
79 | };
|
80 |
|
81 | function getPathSegments(path) {
|
82 | var pathArr = path.split('.');
|
83 | var parts = [];
|
84 |
|
85 | for (var i = 0; i < pathArr.length; i++) {
|
86 | var p = pathArr[i];
|
87 |
|
88 | while (p[p.length - 1] === '\\') {
|
89 | p = p.slice(0, -1) + '.';
|
90 | p += pathArr[++i];
|
91 | }
|
92 |
|
93 | parts.push(p);
|
94 | }
|
95 |
|
96 | return parts;
|
97 | }
|