aaac7fed
 liuqimichale
add
|
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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
'use strict'
var Plumbing = require('./plumbing.js')
var hasUnicode = require('has-unicode')
var hasColor = require('./has-color.js')
var onExit = require('signal-exit')
var defaultThemes = require('./themes')
var setInterval = require('./set-interval.js')
var process = require('./process.js')
var setImmediate = require('./set-immediate')
module.exports = Gauge
function callWith (obj, method) {
return function () {
return method.call(obj)
}
}
function Gauge (arg1, arg2) {
var options, writeTo
if (arg1 && arg1.write) {
writeTo = arg1
options = arg2 || {}
} else if (arg2 && arg2.write) {
writeTo = arg2
options = arg1 || {}
} else {
writeTo = process.stderr
options = arg1 || arg2 || {}
}
this._status = {
spun: 0,
section: '',
subsection: ''
}
this._paused = false // are we paused for back pressure?
this._disabled = true // are all progress bar updates disabled?
this._showing = false // do we WANT the progress bar on screen
this._onScreen = false // IS the progress bar on screen
this._needsRedraw = false // should we print something at next tick?
this._hideCursor = options.hideCursor == null ? true : options.hideCursor
this._fixedFramerate = options.fixedFramerate == null
? !(/^v0\.8\./.test(process.version))
: options.fixedFramerate
this._lastUpdateAt = null
this._updateInterval = options.updateInterval == null ? 50 : options.updateInterval
this._themes = options.themes || defaultThemes
this._theme = options.theme
var theme = this._computeTheme(options.theme)
var template = options.template || [
{type: 'progressbar', length: 20},
{type: 'activityIndicator', kerning: 1, length: 1},
{type: 'section', kerning: 1, default: ''},
{type: 'subsection', kerning: 1, default: ''}
]
this.setWriteTo(writeTo, options.tty)
var PlumbingClass = options.Plumbing || Plumbing
this._gauge = new PlumbingClass(theme, template, this.getWidth())
this._$$doRedraw = callWith(this, this._doRedraw)
this._$$handleSizeChange = callWith(this, this._handleSizeChange)
this._cleanupOnExit = options.cleanupOnExit == null || options.cleanupOnExit
this._removeOnExit = null
if (options.enabled || (options.enabled == null && this._tty && this._tty.isTTY)) {
this.enable()
} else {
this.disable()
}
}
Gauge.prototype = {}
Gauge.prototype.isEnabled = function () {
return !this._disabled
}
Gauge.prototype.setTemplate = function (template) {
this._gauge.setTemplate(template)
if (this._showing) this._requestRedraw()
}
Gauge.prototype._computeTheme = function (theme) {
if (!theme) theme = {}
if (typeof theme === 'string') {
theme = this._themes.getTheme(theme)
} else if (theme && (Object.keys(theme).length === 0 || theme.hasUnicode != null || theme.hasColor != null)) {
var useUnicode = theme.hasUnicode == null ? hasUnicode() : theme.hasUnicode
var useColor = theme.hasColor == null ? hasColor : theme.hasColor
theme = this._themes.getDefault({hasUnicode: useUnicode, hasColor: useColor, platform: theme.platform})
}
return theme
}
Gauge.prototype.setThemeset = function (themes) {
this._themes = themes
this.setTheme(this._theme)
}
Gauge.prototype.setTheme = function (theme) {
this._gauge.setTheme(this._computeTheme(theme))
if (this._showing) this._requestRedraw()
this._theme = theme
}
Gauge.prototype._requestRedraw = function () {
this._needsRedraw = true
if (!this._fixedFramerate) this._doRedraw()
}
Gauge.prototype.getWidth = function () {
return ((this._tty && this._tty.columns) || 80) - 1
}
Gauge.prototype.setWriteTo = function (writeTo, tty) {
var enabled = !this._disabled
if (enabled) this.disable()
this._writeTo = writeTo
this._tty = tty ||
(writeTo === process.stderr && process.stdout.isTTY && process.stdout) ||
(writeTo.isTTY && writeTo) ||
this._tty
if (this._gauge) this._gauge.setWidth(this.getWidth())
if (enabled) this.enable()
}
Gauge.prototype.enable = function () {
if (!this._disabled) return
this._disabled = false
if (this._tty) this._enableEvents()
if (this._showing) this.show()
}
Gauge.prototype.disable = function () {
if (this._disabled) return
if (this._showing) {
this._lastUpdateAt = null
this._showing = false
this._doRedraw()
this._showing = true
}
this._disabled = true
if (this._tty) this._disableEvents()
}
Gauge.prototype._enableEvents = function () {
if (this._cleanupOnExit) {
this._removeOnExit = onExit(callWith(this, this.disable))
}
this._tty.on('resize', this._$$handleSizeChange)
if (this._fixedFramerate) {
this.redrawTracker = setInterval(this._$$doRedraw, this._updateInterval)
if (this.redrawTracker.unref) this.redrawTracker.unref()
}
}
Gauge.prototype._disableEvents = function () {
this._tty.removeListener('resize', this._$$handleSizeChange)
if (this._fixedFramerate) clearInterval(this.redrawTracker)
if (this._removeOnExit) this._removeOnExit()
}
Gauge.prototype.hide = function (cb) {
if (this._disabled) return cb && process.nextTick(cb)
if (!this._showing) return cb && process.nextTick(cb)
this._showing = false
this._doRedraw()
cb && setImmediate(cb)
}
Gauge.prototype.show = function (section, completed) {
this._showing = true
if (typeof section === 'string') {
this._status.section = section
} else if (typeof section === 'object') {
var sectionKeys = Object.keys(section)
for (var ii = 0; ii < sectionKeys.length; ++ii) {
var key = sectionKeys[ii]
this._status[key] = section[key]
}
}
if (completed != null) this._status.completed = completed
if (this._disabled) return
this._requestRedraw()
}
Gauge.prototype.pulse = function (subsection) {
this._status.subsection = subsection || ''
this._status.spun ++
if (this._disabled) return
if (!this._showing) return
this._requestRedraw()
}
Gauge.prototype._handleSizeChange = function () {
this._gauge.setWidth(this._tty.columns - 1)
this._requestRedraw()
}
Gauge.prototype._doRedraw = function () {
if (this._disabled || this._paused) return
if (!this._fixedFramerate) {
var now = Date.now()
if (this._lastUpdateAt && now - this._lastUpdateAt < this._updateInterval) return
this._lastUpdateAt = now
}
if (!this._showing && this._onScreen) {
this._onScreen = false
var result = this._gauge.hide()
if (this._hideCursor) {
result += this._gauge.showCursor()
}
return this._writeTo.write(result)
}
if (!this._showing && !this._onScreen) return
if (this._showing && !this._onScreen) {
this._onScreen = true
this._needsRedraw = true
if (this._hideCursor) {
this._writeTo.write(this._gauge.hideCursor())
}
}
if (!this._needsRedraw) return
if (!this._writeTo.write(this._gauge.show(this._status))) {
this._paused = true
this._writeTo.on('drain', callWith(this, function () {
this._paused = false
this._doRedraw()
}))
}
}
|
