source: trip-planner-front/node_modules/mute-stream/mute.js@ ceaed42

Last change on this file since ceaed42 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 3.5 KB
Line 
1var Stream = require('stream')
2
3module.exports = MuteStream
4
5// var out = new MuteStream(process.stdout)
6// argument auto-pipes
7function MuteStream (opts) {
8 Stream.apply(this)
9 opts = opts || {}
10 this.writable = this.readable = true
11 this.muted = false
12 this.on('pipe', this._onpipe)
13 this.replace = opts.replace
14
15 // For readline-type situations
16 // This much at the start of a line being redrawn after a ctrl char
17 // is seen (such as backspace) won't be redrawn as the replacement
18 this._prompt = opts.prompt || null
19 this._hadControl = false
20}
21
22MuteStream.prototype = Object.create(Stream.prototype)
23
24Object.defineProperty(MuteStream.prototype, 'constructor', {
25 value: MuteStream,
26 enumerable: false
27})
28
29MuteStream.prototype.mute = function () {
30 this.muted = true
31}
32
33MuteStream.prototype.unmute = function () {
34 this.muted = false
35}
36
37Object.defineProperty(MuteStream.prototype, '_onpipe', {
38 value: onPipe,
39 enumerable: false,
40 writable: true,
41 configurable: true
42})
43
44function onPipe (src) {
45 this._src = src
46}
47
48Object.defineProperty(MuteStream.prototype, 'isTTY', {
49 get: getIsTTY,
50 set: setIsTTY,
51 enumerable: true,
52 configurable: true
53})
54
55function getIsTTY () {
56 return( (this._dest) ? this._dest.isTTY
57 : (this._src) ? this._src.isTTY
58 : false
59 )
60}
61
62// basically just get replace the getter/setter with a regular value
63function setIsTTY (isTTY) {
64 Object.defineProperty(this, 'isTTY', {
65 value: isTTY,
66 enumerable: true,
67 writable: true,
68 configurable: true
69 })
70}
71
72Object.defineProperty(MuteStream.prototype, 'rows', {
73 get: function () {
74 return( this._dest ? this._dest.rows
75 : this._src ? this._src.rows
76 : undefined )
77 }, enumerable: true, configurable: true })
78
79Object.defineProperty(MuteStream.prototype, 'columns', {
80 get: function () {
81 return( this._dest ? this._dest.columns
82 : this._src ? this._src.columns
83 : undefined )
84 }, enumerable: true, configurable: true })
85
86
87MuteStream.prototype.pipe = function (dest, options) {
88 this._dest = dest
89 return Stream.prototype.pipe.call(this, dest, options)
90}
91
92MuteStream.prototype.pause = function () {
93 if (this._src) return this._src.pause()
94}
95
96MuteStream.prototype.resume = function () {
97 if (this._src) return this._src.resume()
98}
99
100MuteStream.prototype.write = function (c) {
101 if (this.muted) {
102 if (!this.replace) return true
103 if (c.match(/^\u001b/)) {
104 if(c.indexOf(this._prompt) === 0) {
105 c = c.substr(this._prompt.length);
106 c = c.replace(/./g, this.replace);
107 c = this._prompt + c;
108 }
109 this._hadControl = true
110 return this.emit('data', c)
111 } else {
112 if (this._prompt && this._hadControl &&
113 c.indexOf(this._prompt) === 0) {
114 this._hadControl = false
115 this.emit('data', this._prompt)
116 c = c.substr(this._prompt.length)
117 }
118 c = c.toString().replace(/./g, this.replace)
119 }
120 }
121 this.emit('data', c)
122}
123
124MuteStream.prototype.end = function (c) {
125 if (this.muted) {
126 if (c && this.replace) {
127 c = c.toString().replace(/./g, this.replace)
128 } else {
129 c = null
130 }
131 }
132 if (c) this.emit('data', c)
133 this.emit('end')
134}
135
136function proxy (fn) { return function () {
137 var d = this._dest
138 var s = this._src
139 if (d && d[fn]) d[fn].apply(d, arguments)
140 if (s && s[fn]) s[fn].apply(s, arguments)
141}}
142
143MuteStream.prototype.destroy = proxy('destroy')
144MuteStream.prototype.destroySoon = proxy('destroySoon')
145MuteStream.prototype.close = proxy('close')
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