83 lines
2.3 KiB
JavaScript
83 lines
2.3 KiB
JavaScript
module.exports = {
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getInstalledVersion,
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spawn
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}
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var cp = require('child_process')
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var fs = require('fs')
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var path = require('path')
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// Runs vlc --version. Calls back with the currently installed version of VLC
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// or null if VLC is not installed. (Or 'unknown' if VLC runs and produces bad
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// output, but that should never happen.)
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function getInstalledVersion (cb) {
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exec(['--version'], function (e, stdout, stderr) {
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var version
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if (e) {
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version = null
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} else {
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// Prints several lines, starting with eg: VLC media player 2.7.0
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if (!stdout.startsWith('VLC media player')) version = 'unknown'
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else version = stdout.split(' ')[3]
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}
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cb(version)
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})
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}
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// TODO: make this its own module, to avoid duplicating code with webtorrent-cli
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// Finds if VLC is installed on Mac, Windows, or Linux and runs it
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function exec (args, cb) {
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execOrSpawn(args, true, cb)
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}
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// Finds if VLC is installed on Mac, Windows, or Linux.
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// Uses child_process.spawn() to return a ChildProcess object
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// Calls back with (err, childProcess)
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function spawn (args, cb) {
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execOrSpawn(args, false, cb)
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}
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function execOrSpawn (args, isExec, cb) {
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if (process.platform === 'win32') {
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var Registry = require('winreg')
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var key
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if (process.arch === 'x64') {
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key = new Registry({
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hive: Registry.HKLM,
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key: '\\Software\\Wow6432Node\\VideoLAN\\VLC'
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})
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} else {
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key = new Registry({
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hive: Registry.HKLM,
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key: '\\Software\\VideoLAN\\VLC'
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})
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}
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key.get('InstallDir', function (err, item) {
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if (err) return cb(err)
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var vlcPath = item.value + path.sep + 'vlc'
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if (isExec) cp.execFile(vlcPath, args, cb)
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else cb(null, cp.spawn(vlcPath, args))
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})
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} else {
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var macRoot = '/Applications/VLC.app/Contents/MacOS/VLC'
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var macHome = (process.env.HOME || '') + root
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var locations = [macRoot, macHome, '/usr/bin/vlc']
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var found = false
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var failed = 0
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locations.forEach(function (loc) {
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fs.stat(loc, function (err) {
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if (err) {
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if (++failed === locations.length) cb(new Error('Can\'t find VLC'))
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return
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}
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if (found) return
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found = true
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if (isExec) cp.execFile(loc, args, cb)
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else cb(null, cp.spawn(loc, args))
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})
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})
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}
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}
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