electron/npm/install.js

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#!/usr/bin/env node
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// maintainer note - x.y.z-ab version in package.json -> x.y.z
var version = require('./package').version.replace(/-.*/, '')
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var fs = require('fs')
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var os = require('os')
var path = require('path')
var extract = require('extract-zip')
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var download = require('electron-download')
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var installedVersion = null
try {
installedVersion = fs.readFileSync(path.join(__dirname, 'dist', 'version'), 'utf-8').replace(/^v/, '')
} catch (err) {
// do nothing
}
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var platform = process.env.npm_config_platform || os.platform()
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function onerror (err) {
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throw err
}
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var paths = {
darwin: 'dist/Electron.app/Contents/MacOS/Electron',
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freebsd: 'dist/electron',
linux: 'dist/electron',
win32: 'dist/electron.exe'
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}
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if (!paths[platform]) throw new Error('Electron builds are not available on platform: ' + platform)
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if (installedVersion === version && fs.existsSync(path.join(__dirname, paths[platform]))) {
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process.exit(0)
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}
// downloads if not cached
download({
version: version,
platform: process.env.npm_config_platform,
arch: process.env.npm_config_arch,
strictSSL: process.env.npm_config_strict_ssl === 'true',
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quiet: ['info', 'verbose', 'silly', 'http'].indexOf(process.env.npm_config_loglevel) === -1
}, extractFile)
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// unzips and makes path.txt point at the correct executable
function extractFile (err, zipPath) {
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if (err) return onerror(err)
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extract(zipPath, {dir: path.join(__dirname, 'dist')}, function (err) {
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if (err) return onerror(err)
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fs.writeFile(path.join(__dirname, 'path.txt'), paths[platform], function (err) {
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if (err) return onerror(err)
})
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})
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}