forked from seeebek/EliteOCR
/
update.py
144 lines (122 loc) · 5.51 KB
/
update.py
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# -*- coding: utf-8 -*-
from PyQt4.QtGui import *
from PyQt4.QtCore import SIGNAL, QUrl, QThread, QString
from updateUI import Ui_Update
from threadworker import Worker
import os
from os import makedirs, rename, remove
from os.path import isdir, isfile
import requests
import time
import sys
import subprocess
class UpdateDialog(QDialog, Ui_Update):
def __init__(self, path, appversion, newupd):
QDialog.__init__(self)
self.app_path = path
self.setupUi(self)
self.exiting = False
self.appversion = appversion
self.newupd = newupd
self.filepath = ""
if not newupd is None:
self.label.setText("New version found: "+newupd[1])
self.download.setEnabled(True)
#self.download.setEnabled(True)
self.download.clicked.connect(self.downloadFile)
self.check.clicked.connect(self.checkUpdate)
self.thread = Worker()
self.connect(self.thread, SIGNAL("output(QString, QString)"), self.showUpdateAvailable)
self.connect(self.thread, SIGNAL("end()"), self.showNoUpdate)
self.downloader = Downloader(self)
self.connect(self.downloader, SIGNAL("loaded(int, int)"), self.updateProgress)
self.connect(self.downloader, SIGNAL("finished()"), self.downloadFinished)
self.connect(self.downloader, SIGNAL("finishederror()"), self.downloadFinishedError)
def closeEvent(self, event):
self.emit(SIGNAL("exiting()"))
event.accept()
def downloadFile(self):
self.check.setEnabled(False)
self.download.setEnabled(False)
if not self.newupd is None:
self.label.setText("Starting download.")
url = "http://sourceforge.net/projects/eliteocr/files/"+self.newupd[0]+"/EliteOCR."+self.newupd[1]+".zip"
#url = "http://blog.fancyrhino.com/wp-content/uploads/2014/03/3.jpg"
if not isdir(unicode(self.app_path)+u""+ os.sep +".."+ os.sep +"update"+ os.sep +""):
makedirs(unicode(self.app_path)+u""+ os.sep +".."+ os.sep +"update"+ os.sep +"")
self.filepath = unicode(self.app_path)+u""+ os.sep +".."+ os.sep +"update"+ os.sep +"EliteOCR."+unicode(self.newupd[1])+u".zip.part"
#print self.filepath
self.downloader.get(url, self.filepath)
def downloadFinished(self):
if isfile(self.filepath[:-5]):
remove(self.filepath[:-5])
rename(self.filepath, self.filepath[:-5])
self.progress_bar.setMaximum(1)
self.progress_bar.setValue(0)
self.label.setText("Download finished. You can find it in the update directory.")
subprocess.Popen(r'explorer /select,"'+unicode(self.app_path).encode(sys.getfilesystemencoding())+ os.sep +".."+ os.sep +"update"+ os.sep +"EliteOCR."+unicode(self.newupd[1]).encode(sys.getfilesystemencoding())+".zip")
def downloadFinishedError(self):
self.progress_bar.setMaximum(1)
self.progress_bar.setValue(0)
self.label.setText("Error while downloading.")
def updateProgress(self, done, total):
self.progress_bar.setMaximum(total)
self.progress_bar.setValue(done)
self.label.setText("Downloading: "+unicode("%.2f" % (done/1048576.0))+"MB / "+unicode("%.2f" % (total/1048576.0))+"MB")
def showNoUpdate(self):
self.label.setText("No updates found.")
self.check.setEnabled(True)
self.progress_bar.setMinimum(0)
self.progress_bar.setMaximum(1)
self.progress_bar.setValue(0)
def showUpdateAvailable(self, dir, appversion):
self.newupd = (dir, appversion)
self.label.setText("New version found: "+appversion)
self.check.setEnabled(True)
self.download.setEnabled(True)
self.progress_bar.setMinimum(0)
self.progress_bar.setMaximum(1)
self.progress_bar.setValue(0)
def checkUpdate(self):
self.label.setText("Looking for new updates")
self.check.setEnabled(False)
self.progress_bar.setMinimum(0)
self.progress_bar.setMaximum(0)
self.progress_bar.setValue(0)
self.thread.check(self.appversion)
class Downloader(QThread):
def __init__(self, parent = None):
QThread.__init__(self, parent)
self.url = ""
self.path = "./"
self.exiting = False
self.connect(parent, SIGNAL("exiting()"), self.abort)
def abort(self):
self.exiting = True
def get(self, url, path):
self.url = url
self.path = path
self.start()
def run(self):
url = self.url
localFilename = self.path
with open( localFilename, 'wb') as f:
start = time.clock()
r = requests.get(url, stream=True)
total_length = r.headers.get('content-length')
dl = 0
if total_length is None: # no content length header
f.write(r.content)
else:
for chunk in r.iter_content(1024):
if self.exiting:
return
dl += len(chunk)
f.write(chunk)
done = int(50 * dl / int(total_length))
speed = (dl//(time.clock() - start)) #in bps
self.emit(SIGNAL("loaded(int,int)"), int(dl), int(total_length))
if (dl == total_length) and (not self.exiting):
self.emit(SIGNAL("finished()"))
else:
self.emit(SIGNAL("finishederror()"))