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Some fixes and refactoring

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This commit is contained in:
Juan Cruz Viotti 2015-01-28 15:26:56 -04:00
parent 96d221fbcf
commit 9de4a3c556
1 changed files with 9 additions and 6 deletions
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15
lib/drive/drive.coffee
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@ -6,6 +6,7 @@ childProcess = require('child_process')
progressStream = require('progress-stream')
IS_WINDOWS = os.platform() is 'win32'
DISK_IO_FLAGS = 'rs+'
exports.rescanDrives = (callback) ->
return callback() if not IS_WINDOWS
@ -22,7 +23,7 @@ exports.eraseMBR = (devicePath, callback) ->
async.waterfall([
(callback) ->
fs.open(devicePath, 'rs+', null, callback)
fs.open(devicePath, DISK_IO_FLAGS, null, callback)
(fd, callback) ->
buffer = new Buffer(bufferSize)
@ -48,13 +49,11 @@ exports.writeImage = (devicePath, imagePath, options = {}, callback = _.noop) ->
if not IS_WINDOWS and not fs.existsSync(devicePath)
return callback(new Error("Invalid device: #{devicePath}"))
imageFileStream = fs.createReadStream(imagePath)
deviceFileStream = fs.createWriteStream(devicePath, flags: 'rs+')
deviceFileStream.on('error', callback)
imageFileSize = fs.statSync(imagePath).size
if imageFileSize is 0
return callback(new Error("Invalid OS image: #{imagePath}. The image is 0 bytes."))
progress = progressStream
length: imageFileSize
time: 500
@ -71,6 +70,10 @@ exports.writeImage = (devicePath, imagePath, options = {}, callback = _.noop) ->
exports.rescanDrives(callback)
(callback) ->
deviceFileStream = fs.createWriteStream(devicePath, flags: DISK_IO_FLAGS)
deviceFileStream.on('error', callback)
imageFileStream = fs.createReadStream(imagePath)
imageFileStream
.pipe(progress)
.pipe(deviceFileStream)