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#!/usr/bin/python -- tested on Python 2.5+ only
# coding: utf-8
'''
"createpatch.py" is the python program used used to create a mailman patch.
LICENSE: Copyright(C)2010, Vidya [svaksha] Ayer <vid@svaksha.com>, GPLv3.
https://code.launchpad.net/~systers-dev/systers/product-release-systers
http://systers.org/systers-dev/doku.php/how_to_create_a_patch
USAGE: python createpatch.py (While the execution feedback will be displayed
on the terminal, its output is also logged in the "log-createpatch.txt" file.
'''
#python modules
import sys
import os
import os.path
import popen2
import shlex
import string
import time
import commands
import datetime
import subprocess
from glob import glob
#python path.
filepath, filename = os.path.split(os.path.abspath(os.path.dirname(__file__)))
sys.path.append(filepath)
sys.path.append("/usr/lib/python2.5/")
sys.path.append("/usr/lib/python2.5/sitepackages/bzrlib/")
sys.path.append("/usr/share/pyshared/bzrlib/")
#print $user
user = os.environ['USER']
print '\n User:', user
startTime = datetime.datetime.now()
print '\nThe starting date, time is:', str(startTime)
#logging to file and scr.
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
tee = subprocess.Popen(["tee", "log-createpatch.txt"], stdin=subprocess.PIPE)
os.dup2(tee.stdin.fileno(), sys.stdout.fileno())
os.dup2(tee.stdin.fileno(), sys.stderr.fileno())
#Terminal user input
print "\nThis script automates the patch creation process for these steps: \
\n001. Make a patch with 2 files \
\n002. Patch with a directory of files \
\n003. Dry run before applying the patch \
\n004. Apply the patch only when there are no errors. "
print "\nEnter a step number [Ex. 001, to start from step one]:"
#******************************************************************************
#CREATE A PATCH steps are based on this write-up:
#http://systers.org/systers-dev/doku.php/how_to_create_a_patch
#******************************************************************************
#ask user to input starting step number.
InpStpNo = int(input())
print "\nStarting step number is: %d" % InpStpNo
print "\nBatch job begins for: Creating a Patch."
#1.Make a patch with 2 files (this works on most Linux distros):
#*****************************************************************************
#if start from step1
if int('001') >= InpStpNo:
try:
#ask user input for file path.
print "\nEnter 'oldfile' path (ex. '/home/path/olddir/oldfile' : "
oldfile = str(input())
print "\nEnter 'newfile' path (ex. '/home/path/newdir/newfile' : "
newfile = str(input())
retcode = subprocess.call(["diff -u %s %s > file.patch" % (oldfile, newfile)], shell=True)
print "\nExecuting, diff -u %s %s > file.patch"
if retcode < 0:
#if diff fails
print >>sys.stderr, "\nFAIL: step 001 (Cannot create a patch with two files)", -retcode
sys.exit()
else:
#create patch for 2 files.
print >>sys.stderr, "\nPASS: step001-Created a patch with 2 files. END 001, OK", retcode
except OSError, e:
print >>sys.stderr, "\nERROR: step 001", e
else:
pass
#2.Creating a patch with a directory of files
#*****************************************************************************
#if start from step2.
if int('002') >= InpStpNo and int('001') != InpStpNo:
try:
#user input for folder/directory path.
print "\nEnter 'oldDirectory' path name (Ex. '/home/path/olddir/' :"
olddir = str(input())
print "\nEnter 'newDirectory' path name (Ex. '/home/path/newdir/' :"
newdir = str(input())
retcode = subprocess.call(["diff -Naur %s %s > file.patch" % (olddir, newdir)], shell=True)
print "\nExecuting, diff -Naur %s %s > file.patch"
if retcode < 0:
#if diff of 'old-new' files fail
print >>sys.stderr, "FAIL: step002-Cannot create a patch with a directory of files:", -retcode
sys.exit()
else:
#create patch for 2 directory's.
print >>sys.stderr, "PASS: step002-Created a patch with a directory of files. END 002, OK.", retcode
except OSError, e:
print >>sys.stderr, "ERROR: step 002", e
else:
pass
#3.Dry run before applying the patch:
#*****************************************************************************
#if start from step3.
if int('003') >= InpStpNo:
try:
#execute dry run.
retcode = subprocess.call(["patch -p0 --dry-run < file.patch"], shell=True)
print "\nExecuting, patch -p0 --dry-run < file.patch"
if retcode < 0:
#dry run fails
print >>sys.stderr, "FAIL: step003-Dry run failed.", -retcode
sys.exit()
else:
#dry run OK.
print >>sys.stderr, "PASS: step003-Dry run to check for errors successful. END 003, OK", retcode
except OSError, e:
print >>sys.stderr, "ERROR: step 003, Dry run.", e
else:
pass
#4.apply the patch only when there are no error
#*****************************************************************************
#if start from step4
if int('004') >= InpStpNo:
try:
#applying the patch
retcode = subprocess.call(["patch -p0 < file.patch"], shell=True)
print "\nExecuting, patch -p0 --dry-run < file.patch"
if retcode < 0:
#Fail to apply patch
print >>sys.stderr, "FAIL: step004, Cannot apply patch.", -retcode
sys.exit()
else:
#Patch applied successfully.
print >>sys.stderr, "PASS: step004, Application of patch successful. END 004, OK.", retcode
print '\nStatus: Patches applied, OK.'
except OSError, e:
print >>sys.stderr, "ERROR: step 004, Dry run.", e
else:
pass
#Printing Completion and difference TIME.
#*****************************************************************************
endTime = datetime.datetime.now()
print "\nEnding Time for the program 'createpatch.py' is: ", str(endTime)
timedelta = endTime - startTime
#Printing total system installation time taken by 'createpatch.py'.
#*****************************************************************************
installationTime = timedelta
print "\nTotal time taken by 'createpatch.py': ", installationTime
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