nyc-bookstores/node_modules/browservefy/index.js

215 lines
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JavaScript
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2013-05-27 20:45:59 +00:00
var http = require('http')
, spawn = require('child_process').spawn
, url = require('url')
, path = require('path')
, fs = require('fs')
var filed = require('filed')
, LiveReloadServer = require('live-reload')
, response_stream = require('response-stream')
, optimist = require('optimist').argv
, colors = require('colors')
, through = require('through')
var help = require('./help')
, fake_index_html = fs.readFileSync(path.join(__dirname, 'fake_index.html'), 'utf8')
var argv = process.argv.slice(/node/.test(process.argv[0]) ? 2 : 1)
, CWD = process.cwd()
, browserify_path = which_browserify()
, browserify_args = null
, ENTRY_POINT_TARGET
, ENTRY_POINT_URL
, LIVE_PORT
, PORT
if(!get_args()) {
return process.exit(1)
}
info('using '+browserify_path.replace(CWD, '.'))
var RESPONSE_MAP = [
'grey'
, 'grey'
, 'green'
, 'magenta'
, 'yellow'
, 'red'
]
http.createServer(function(req, resp) {
var parsed = url.parse(req.url, true)
, pathname = parsed.pathname.slice(1) || 'index.html'
, filepath = path.resolve(path.join(CWD, pathname))
, logged_pathname = '/'+pathname
, logged_color = null
, query = parsed.query || {}
, start = Date.now()
, bytesize = 0
, stream
, args
, bfy
if(pathname === ENTRY_POINT_URL || 'browserify' in query) {
args = [
pathname === ENTRY_POINT_URL ? ENTRY_POINT_TARGET : filepath
].concat(browserify_args)
logged_pathname = logged_pathname + ' -> ' + [browserify_path]
.concat(args)
.map(function(xxx) { return xxx.replace(CWD, '.') })
.join(' ').magenta
bfy = spawn(browserify_path, args)
stream = response_stream(bfy.stdout)
logged_color = 'underline'
stream.setHeader('content-type', 'text/javascript')
bfy.stderr.pipe(process.stdout)
var error = []
bfy.stderr.on('data', [].push.bind(error))
bfy.stderr.on('end', function() {
bfyerror(error.join(''))
})
} else if(fs.existsSync(filepath)) {
stream = fs.createReadStream(filepath)
} else if(/html/.test(req.headers.accept || '')) {
logged_pathname = logged_pathname.blue + ' ' + '(generated)'.grey
stream = response_stream(fake_index(query))
stream.setHeader('content-type', 'text/html')
} else {
stream = response_stream(through())
stream.writeHead(404, {'content-type': 'text/plain'})
process.nextTick(function() {
stream.end('not found')
})
}
stream.pipe(resp)
stream.on('end', log)
stream.on('data', function(data) {
bytesize += data.length
})
function log() {
var code = resp.statusCode + ''
console.log(
code[RESPONSE_MAP[code.charAt(0)]] + ' '
+ pad(Date.now() - start + 'ms', 6) + ' '
+ pad(sized(bytesize), 9).grey + ' '
+ logged_pathname
)
}
function bfyerror(data) {
resp.end('('+function(error) {
var pre = document.createElement('pre')
pre.textContent = error
document.body.children.length ?
document.body.insertBefore(pre, document.body.children[0]) :
document.body.appendChild(pre)
}+'('+JSON.stringify(data+'')+'))')
}
}).listen(PORT)
if(optimist.live) {
LIVE_PORT = optimist.live === true ? 9967 : optimist.live
LiveReloadServer({
port: LIVE_PORT
})
}
function fake_index(query) {
var stream = through()
, index_path
, live_text
, html
index_path = query.p || ENTRY_POINT_URL.replace(CWD, '')
if(query.p) {
index_path += '?browserify'
}
live_text = '<script src="http://localhost:' + LIVE_PORT + '"></script>'
html = fake_index_html
.replace('{{ PATH }}', index_path)
.replace('{{ EXTRA }}', LIVE_PORT ? live_text : '')
process.nextTick(function() {
stream.end(html)
})
return stream
}
function get_args() {
if(!argv.length || optimist.h || optimist.help) {
return help()
}
for(var i = 0, len = argv.length; i < len; ++i) {
if(argv[i] === '--') {
break
}
}
browserify_args = argv.splice(i+1, argv.length - i)
argv[0] = argv[0].split(':')
ENTRY_POINT_TARGET = argv[0][0]
ENTRY_POINT_URL = argv[0][~~(1 % argv[0].length)]
ENTRY_POINT_TARGET = path.resolve(
path.join(CWD, ENTRY_POINT_TARGET)
)
ENTRY_POINT_URL = ENTRY_POINT_URL.replace(/^\.\//g, '')
PORT = +argv[1] || 9966
info('listening on '+PORT)
return true
}
function which_browserify() {
if(optimist.browserify) {
return optimist.browserify
}
var local = path.join(CWD, 'node_modules/.bin/browserify')
if(fs.existsSync(local)) {
return local
}
return 'browserify'
}
function info(what) {
console.log(what.grey)
}
function sized(bytesize) {
var powers = ['B', 'KB', 'MB', 'GB']
, curr
, next
for(var i = 0, len = powers.length; i < len; ++i) {
curr = Math.pow(1024, i)
next = Math.pow(1024, i + 1)
if(bytesize < next) {
return (bytesize / curr).toFixed(2).replace(/\.?0+$/g, '') + powers[i]
}
}
return (bytesize / curr) + 'gib'
}
function pad(s, n, w) {
while(s.length < n) {
s = (w || ' ') + s
}
return s
}