Implement downloading and searching with sha1sum verification

cbrew.coffee

+#!/usr/local/bin/coffee
+
 program = require 'commander'
 fs = require 'fs'
 events = require 'events'
 global.eventDispatch = new events.EventEmitter
+crypto = require 'crypto'
 
 program.version '0.0.1'
 program.parse process.argv
@@ -9,20 +12,47 @@ program.parse process.argv
 action = process.argv[2]
 pkgName = process.argv[3]
 
-search = (pkgName, callback) ->
-  fs.readdir '.', (err, files) =>
-    callback file for file in files when file.indexOf(pkgName) isnt -1
+@pkg = (pkgName) ->
+  eventDispatch.on 'packageFound', ->
+    @pkg = require './formulas/' + pkgName + '.coffee'
+  eventDispatch.on 'packageNotFound', ->
+    console.log 'package ' + pkgName + ' not found :('
+    process.exit 1
+  
+  look_for pkgName
+
+look_for = (pkgName) ->
+  fs.readdir 'formulas', (err, files) ->
+    return eventDispatch.emit 'packageFound' for file in files when file.indexOf(pkgName) isnt -1
+    return eventDispatch.emit 'packageNotFound'
 
-download = (pkgName) ->
-  pkg = require './' + pkgName + '.coffee'
-  pkg.getBinary()
+search = (pkgName) =>
+  @pkg pkgName
+  eventDispatch.on 'packageFound', ->
+    console.log pkgName + ' found!'
 
-install = (pkgName) ->
+download = (pkgName) =>
+  @pkg pkgName
+  eventDispatch.on 'packageFound', ->
+    @pkg.getSource() unless @pkg.getBinary()
+  eventDispatch.on 'filename', (filename) ->
+    @pkg.filename = filename
+  eventDispatch.on 'gotPackage', ->
+    sha1sum = crypto.createHash 'sha1'
+    stream = fs.ReadStream @pkg.filename
+    stream.on 'data', (data) ->
+      sha1sum.update data
+    stream.on 'end', ->
+      digest = sha1sum.digest 'hex'
+      console.log digest
+
+install = (pkgName) =>
   download pkgName
-  eventDispatch.on 'gotFile', ->
-    console.log "installing..."
+
+  eventDispatch.on 'gotPackage', ->
+    @pkg.build() unless @pkg.installBinary()
 
 switch action
-  when "search" then search pkgName, console.log
+  when "search" then search pkgName
   when "download" then download pkgName
   when "install" then install pkgName

formulas/binutils.coffee

-network = require './network.coffee'
+network = require '../network.coffee'
 
 module.exports =
   binary_url: "https://dl.dropboxusercontent.com/s/u3cp7mpdyfx99ij/binutils-2.23.2-chromeos-i686.tar.gz?token_hash=AAGsFB9HXNb5tSAm_Wd2GyIUL59BkZYgMTHkj4CkHLxggg&dl=1"

formulas/mpfr.coffee

-network = require './network.coffee'
+network = require '../network.coffee'
 
 module.exports =
   binary_url: "https://dl.dropboxusercontent.com/s/lo9ks3g7ar3zpfu/mpfr-3.1.2-chromeos-i686.tar.gz?token_hash=AAH1GlLfYtUs4uxl1ayeGTBe8RJ5uTXzOAsXgSlv8G5rrA&dl=1"
-  binary_sha1: ""
+  binary_sha1: "763c0228359f99c8a6af5c8b8da628b089eb5451"
 
   getBinary: (callback) ->
     network.getFile @binary_url

network.coffee

@@ -7,6 +7,7 @@ module.exports.getFile = (url) ->
     len = parseInt res.headers['content-length'], 10
     content_disposition = res.headers['content-disposition']
     filename = content_disposition.substring content_disposition.indexOf('"')+1, content_disposition.length-1
+    eventDispatch.emit 'filename', filename
 
     console.log();
     bar = new progressbar ' downloading [:bar] :percent :etas', {
@@ -21,4 +22,4 @@ module.exports.getFile = (url) ->
       bar.tick chunk.length
 
     res.on 'end', ->
-      eventDispatch.emit 'gotFile'
+      eventDispatch.emit 'gotPackage'