--- /dev/null
+'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()
+ }))
+ }
+}
git://repos.xcallymotion.com / motion2.git / blobdiff