AO2XP/install_update.py

import zipfile, tarfile, platform, os, time, shutil, thread
from Tkinter import Tk, HORIZONTAL
from ttk import Label, Progressbar

ext = {
    "Windows": "zip",
    "Darwin": "zip",
    "Linux": "gz"
}

def extractzip(progressbar): # Windows and Mac
    archive = zipfile.ZipFile("update.zip")
    if platform.system() == "Darwin": shutil.rmtree("AO2XP.app", ignore_errors=True) # delete the old app package.
    #archive.extractall() # extract the new version
    for i in range(len(archive.filelist)):
        archive.extract(archive.filelist[i])
        progressbar["value"] = 100. * i / len(archive.filelist)

    if os.path.exists("appbase"): # on a mac with the base folder moved out of .app Resources folder
        os.system("mv appbase AO2XP.app/Contents/Resources/base") # put it back in place

def extractgz(progressbar): # Linux
    archive = tarfile.open("update.gz")
    archive.extractall()


if os.path.exists("update." + ext[platform.system()]):
    window = Tk()
    window.title("AO2XP updater")
    window.wm_resizable(0,0)
    window.geometry("256x64")
    lb = Label(window)
    lb.pack()
    pb = Progressbar(window, orient=HORIZONTAL, length=100, mode="indeterminate")
    pb.pack(fill="x")
    pb.start()

    def extractThread():
        time.sleep(0.1)
        lb["text"] = "Waiting 3 seconds for AO2XP to close..."
        time.sleep(3)
        pb.stop()
        pb["value"] = 0
        pb["mode"] = "determinate"
        lb["text"] = "Extracting update." + ext[platform.system()] + "..."
        globals()["extract" + ext[platform.system()]](pb) # call the extract function according to OS
        lb["text"] = "Done!\nYou can now start AO2XP."
        os.remove("update." + ext[platform.system()])
        time.sleep(4)
        window.destroy()

    thread.start_new_thread(extractThread, ())
    window.mainloop()

else:
    print "This program will be automatically run by AO2XP to apply updates.\nYou do not need to run this yourself."
    raw_input("Press enter to exit.\n")