1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
# DistUpgradeView.py
#
# Copyright (c) 2004,2005 Canonical
#
# Author: Michael Vogt <michael.vogt@ubuntu.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
from gettext import gettext as _
def FuzzyTimeToStr(sec):
" return the time a bit fuzzy (no seconds if time > 60 secs "
if sec > 60*60*24:
return _("%li days %li hours %li minutes") % (sec/60/60/24, (sec/60/60) % 24, (sec/60) % 60)
if sec > 60*60:
return _("%li hours %li minutes") % (sec/60/60, (sec/60) % 60)
if sec > 60:
return _("%li minutes") % (sec/60)
return _("%li seconds") % sec
def estimatedDownloadTime(requiredDownload):
""" get the estimated download time """
timeModem = requiredDownload/(56*1024/8) # 56 kbit
timeDSL = requiredDownload/(1024*1024/8) # 1Mbit = 1024 kbit
s= _("This download will take about %s with a 1Mbit DSL connection "
"and about %s with a 56k modem" % (FuzzyTimeToStr(timeDSL),FuzzyTimeToStr(timeModem)))
return s
class DumbTerminal(object):
def call(self, cmd):
" expects a command in the subprocess style (as a list) "
import subprocess
subprocess.call(cmd)
(STEP_PREPARE,
STEP_MODIFY_SOURCES,
STEP_FETCH_INSTALL,
STEP_CLEANUP,
STEP_REBOOT) = range(1,6)
class DistUpgradeView(object):
" abstraction for the upgrade view "
def __init__(self):
pass
def getOpCacheProgress(self):
" return a OpProgress() subclass for the given graphic"
return apt.progress.OpProgress()
def getFetchProgress(self):
" return a fetch progress object "
return apt.progress.FetchProgress()
def getInstallProgress(self, cache=None):
" return a install progress object "
return apt.progress.InstallProgress(cache)
def getTerminal(self):
return DumbTerminal()
def updateStatus(self, msg):
""" update the current status of the distUpgrade based
on the current view
"""
pass
def abort():
""" provide a visual feedback that the upgrade was aborted """
pass
def setStep(self, step):
""" we have 5 steps current for a upgrade:
1. Analyzing the system
2. Updating repository information
3. Performing the upgrade
4. Post upgrade stuff
5. Complete
"""
pass
def hideStep(self, step):
" hide a certain step from the GUI "
pass
def confirmChanges(self, summary, changes, downloadSize, actions=None):
""" display the list of changed packages (apt.Package) and
return if the user confirms them
"""
self.toInstall = []
self.toUpgrade = []
self.toRemove = []
for pkg in changes:
if pkg.markedInstall: self.toInstall.append(pkg.name)
elif pkg.markedUpgrade: self.toUpgrade.append(pkg.name)
elif pkg.markedDelete: self.toRemove.append(pkg.name)
# no downgrades, re-installs
assert(len(self.toInstall)+len(self.toUpgrade)+len(self.toRemove) == len(changes))
def askYesNoQuestion(self, summary, msg):
" ask a Yes/No question and return True on 'Yes' "
pass
def confirmRestart(self):
" generic ask about the restart, can be overriden "
summary = _("Reboot required")
msg = _("The upgrade is finished and "
"a reboot is required. "
"Do you want to do this "
"now?")
return self.askYesNoQuestion(summary, msg)
def error(self, summary, msg, extended_msg=None):
" display a error "
pass
def information(self, summary, msg, extended_msg=None):
" display a information msg"
pass
|
