-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.js
187 lines (165 loc) · 4.05 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
'use strict';
function Dirp(delimiter, data) {
if (typeof delimiter !== 'string') {
data = delimiter;
delimiter = void(0);
}
this._delim = delimiter || '.';
this._data = makeDirp();
if (data) {
this.import(data);
}
}
Dirp.prototype.set = function (path, val) {
var paths = this._splitPath(path);
var o = this._data;
var res = false;
for (var i = 0; i < paths.length; ++i) {
if (!isDirp(o)) {
// cannot write into user value. abort.
break;
}
var prop = paths[i];
if (i < paths.length - 1) {
if (!o.hasOwnProperty(prop)) {
o[prop] = makeDirp();
}
o = o[prop];
} else {
o[prop] = val;
res = true;
}
}
return res;
};
Dirp.prototype.get = function (path) {
var o = getRawValue(this._splitPath(path), this._data);
if (o && o._dirp) {
return undefined;
}
return o;
};
Dirp.prototype.unset = function (path) {
var paths = this._splitPath(path);
var o = this._data;
var res = false;
for (var i = 0; i < paths.length; ++i) {
if (!isDirp(o)) {
break;
}
var prop = paths[i];
if (!o.hasOwnProperty(prop)) {
break;
}
if (i === paths.length - 1) {
delete o[prop];
res = true;
break;
}
o = o[prop];
}
return res;
};
Dirp.prototype.clear = function () {
this._data = makeDirp();
};
Dirp.prototype.exists = function (path) {
var o = getRawValue(this._splitPath(path), this._data);
return (o !== undefined);
};
Dirp.prototype.raw = function () {
return this._data;
};
Dirp.prototype.clone = function () {
return new Dirp(this._delim, deepCopy(this._data));
};
Dirp.prototype.import = function (data) {
if (isDirp(data)) {
this._data = data;
return;
}
if (isAssociativeArray(data)) {
var self = this;
this._data = makeDirp();
Object.keys(data).forEach(function (prop) {
self.set(prop, data[prop]);
});
return;
}
throw new Error('Faled to import');
};
Dirp.prototype.export = function () {
var self = this;
var exported = {};
var cd = function (cwd, obj) {
Object.keys(obj).forEach(function (prop) {
var newCwd = cwd? [cwd, prop].join(self._delim):prop;
var o = obj[prop];
if (isDirp(o)) {
cd(newCwd, o);
return;
}
exported[newCwd] = o;
});
};
cd(null, this._data);
return exported;
};
Dirp.prototype._splitPath = function (path) {
if (typeof path !== 'string') {
return [];
}
return path.split(this._delim);
};
function markAsDirp(obj) {
// mark it derp .. no, dirp
Object.defineProperty(obj, '_dirp', {
get: function () { return true; }
});
return obj;
}
function makeDirp() {
return markAsDirp({});
}
function isDirp(obj) {
return (isAssociativeArray(obj) && obj._dirp);
}
function getRawValue(paths, obj) {
var o = obj;
for (var i = 0; i < paths.length; ++i) {
var prop = paths[i];
if (!o.hasOwnProperty(prop)) {
return undefined;
}
o = o[prop];
}
return o;
}
function deepCopy(obj) {
if (!obj._dirp) {
return JSON.parse(JSON.stringify(obj));
}
var copy = makeDirp();
Object.keys(obj).forEach(function (prop) {
var o = obj[prop];
if (isAssociativeArray(o)) {
// associative array
copy[prop] = deepCopy(o);
} else if (Array.isArray(o)) {
// array
copy[prop] = JSON.parse(JSON.stringify(o));
} else {
// primitive
copy[prop] = o;
}
});
return copy;
}
function isAssociativeArray(o) {
return (o && typeof o === 'object' && !Array.isArray(o));
}
module.exports = {
create: function (delimiter, data) {
return new Dirp(delimiter, data);
}
};