pulsar/src/coffee-cache.coffee

44 lines
1.3 KiB
CoffeeScript

crypto = require 'crypto'
fs = require 'fs'
path = require 'path'
os = require 'os'
CoffeeScript = require 'coffee-script'
CSON = require 'season'
mkdir = require('mkdirp').sync
tmpDir = if process.platform is 'win32' then os.tmpdir() else '/tmp'
cacheDir = path.join(tmpDir, 'atom-compile-cache')
coffeeCacheDir = path.join(cacheDir, 'coffee')
CSON.setCacheDir(path.join(cacheDir, 'cson'))
getCachePath = (coffee) ->
digest = crypto.createHash('sha1').update(coffee, 'utf8').digest('hex')
path.join(coffeeCacheDir, "#{digest}.coffee")
getCachedJavaScript = (cachePath) ->
if stat = fs.statSyncNoException(cachePath)
try
fs.readFileSync(cachePath, 'utf8') if stat.isFile()
compileCoffeeScript = (coffee, filePath, cachePath) ->
js = CoffeeScript.compile(coffee, filename: filePath)
try
mkdir(path.dirname(cachePath))
fs.writeFileSync(cachePath, js)
js
requireCoffeeScript = (module, filePath) ->
coffee = fs.readFileSync(filePath, 'utf8')
cachePath = getCachePath(coffee)
js = getCachedJavaScript(cachePath) ? compileCoffeeScript(coffee, filePath, cachePath)
module._compile(js, filePath)
module.exports =
cacheDir: cacheDir
register: ->
Object.defineProperty(require.extensions, '.coffee', {
writable: false
value: requireCoffeeScript
})