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#!/usr/bin/python3
import sys
import time
import apt_pkg
import apt
import apt.progress.base
class TextProgress(apt.progress.base.OpProgress):
def __init__(self):
self.last = 0.0
def update(self, percent):
if (self.last + 1.0) <= percent:
sys.stdout.write("\rProgress: %i.2 " % (percent))
self.last = percent
if percent >= 100:
self.last = 0.0
def done(self):
self.last = 0.0
print("\rDone ")
class TextFetchProgress(apt.progress.base.AcquireProgress):
def __init__(self):
pass
def start(self):
pass
def stop(self):
pass
def fail(self, item):
print("fail", item)
def fetch(self, item):
print("fetch", item)
def ims_hit(self, item):
print("ims_hit", item)
def pulse(self, owner):
print(
"pulse: CPS: %s/s; Bytes: %s/%s; Item: %s/%s"
% (
apt_pkg.size_to_str(self.current_cps),
apt_pkg.size_to_str(self.current_bytes),
apt_pkg.size_to_str(self.total_bytes),
self.current_items,
self.total_items,
)
)
return True
def media_change(self, medium, drive):
print(f"Please insert medium {medium} in drive {drive}")
sys.stdin.readline()
# return False
class TextInstallProgress(apt.progress.base.InstallProgress):
def __init__(self):
apt.progress.base.InstallProgress.__init__(self)
def start_update(self):
print("start_update")
def finish_update(self):
print("finish_update")
def status_change(self, pkg, percent, status):
print(f"[{percent}] {pkg}: {status}")
def update_interface(self):
apt.progress.base.InstallProgress.update_interface(self)
# usefull to e.g. redraw a GUI
time.sleep(0.1)
class TextCdromProgress(apt.progress.base.CdromProgress):
def __init__(self):
pass
# update is called regularly so that the gui can be redrawn
def update(self, text, step):
# check if we actually have some text to display
if text != "":
print(f"Update: {text.strip()} {step}")
def ask_cdrom_name(self):
sys.stdout.write("Please enter cd-name: ")
cd_name = sys.stdin.readline()
return (True, cd_name.strip())
def change_cdrom(self):
print("Please insert cdrom and press <ENTER>")
answer = sys.stdin.readline()
print(answer)
return True
if __name__ == "__main__":
c = apt.Cache()
pkg = c["3dchess"]
if pkg.is_installed:
pkg.mark_delete()
else:
pkg.mark_install()
res = c.commit(TextFetchProgress(), TextInstallProgress())
print(res)
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