87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
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var WebSocketServer = require('ws').Server
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var log = require('bole')('budo')
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var path = require('path')
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var isAbsolute = require('path-is-absolute')
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var color = require('term-color')
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module.exports = function (server, opts) {
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opts = opts || {}
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log.info({ message: 'LiveReload running' })
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// get a list of static folders to use as base dirs
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var cwd = path.resolve(opts.cwd || process.cwd())
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var staticDirs = Array.isArray(opts.dir) ? opts.dir : [ opts.dir ]
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staticDirs = staticDirs.map(function (dir) {
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return path.resolve(dir)
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})
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if (staticDirs.indexOf(cwd) === -1) staticDirs.push(cwd)
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var closed = false
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var wss = new WebSocketServer({
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server: server,
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perMessageDeflate: false
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})
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return {
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webSocketServer: wss,
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reload: reload,
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errorPopup: errorPopup,
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close: function () {
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if (closed) return
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wss.close()
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closed = true
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}
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}
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function errorPopup (message) {
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message = message || ''
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broadcast({ event: 'error-popup', message: message })
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}
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function reload (file) {
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if (closed) return
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var url, ext
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if (file && typeof file === 'string') {
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// absolute file path
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file = isAbsolute(file) ? path.normalize(file) : path.resolve(cwd, file)
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// make it relative, removing the static folder parts
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for (var i = 0; i < staticDirs.length; i++) {
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var dir = staticDirs[i]
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url = path.relative(dir, file)
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// if the path doesn't starts with "../", then
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// it should be relative to this folder
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if (!/^(\.\.[/\\]|[/\\])/.test(url)) break
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}
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// turn it into a URL
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url = url.replace(/\\/g, '/')
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// ensure it starts at root of app
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if (url.charAt(0) !== '/') url = '/' + url
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ext = path.extname(file)
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}
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broadcast({ event: 'reload', ext: ext, url: url })
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}
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function broadcast (data) {
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if (closed) return
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data = JSON.stringify(data)
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try {
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wss.clients.forEach(function (client) {
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if (client.readyState === client.OPEN) {
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client.send(data, {
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binary: false
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})
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}
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})
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} catch (err) {
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console.error(color.red('ERROR'), 'Error sending LiveReload event to client:')
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console.error(err)
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}
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}
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}
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