* [gentoo-dev] Two scripts to automate the daily 'emerge rsync' with unmasked packages
@ 2002-06-08 21:21 José Fonseca
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From: José Fonseca @ 2002-06-08 21:21 UTC (permalink / raw
To: gentoo-dev
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Here two scripts to automate the daily 'emerge rsync' with unmasked
packages.
To use them gust have your unmasked packages in
/usr/portage/profiles/package.mask by double commenting them out, i.e.,
inserting '##' before them, e.g., changing
# spider@gentoo.org ; 21 May 2002; # =x11-libs/gtk+-1.2* doesn't work
# this is now the gnome2 big bloated mask!
# (gnome-2 that is ;)
>=x11-libs/gtk-engines-1.9.0
>=gnome-base/libglade-1.99.10-r1
>=app-text/scrollkeeper-0.3.0
...
into
# spider@gentoo.org ; 21 May 2002; # =x11-libs/gtk+-1.2* doesn't work
# this is now the gnome2 big bloated mask!
# (gnome-2 that is ;)
##>=x11-libs/gtk-engines-1.9.0
##>=gnome-base/libglade-1.99.10-r1
##>=app-text/scrollkeeper-0.3.0
...
and run (as root) the 'emerge_rsync.sh' script as many times you want! ;-)
It will also present you with what has been changed in package.mask and in
"world".
Also give a look into the scripts to know a little more - I've minimally
commented them and they are fairly simple.
I hope that you find this useful. If yes, please tell, and I'll make sure
that any fixes and improvements that I (or others) make get back to you
(e.g., by hosting these scripts in my webpage).
Regards,
José Fonseca
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#!/bin/sh
# emerge_rsync.sh
#
# Alternative shell script to 'emerge rsync' that tries to keep the unmasked packages'
#
# Just have your unmasked packages by double commenting them out, i.e., inserting '##' before them, and run this script
#
# José Fonseca <j_r_fonseca@yahoo.co.uk>
PACKAGE_MASK=/usr/portage/profiles/package.mask
PACKAGE_MASK_OLD=`mktemp` || exit 1
PACKAGE_MASK_NEW=`mktemp` || exit 1
# Copy the old package.mask
cp $PACKAGE_MASK $PACKAGE_MASK_OLD || exit 1
emerge rsync || exit 1
# Mimic the packages unmasked by '#' in the old package.mask
python package.py $PACKAGE_MASK_OLD $PACKAGE_MASK > $PACKAGE_MASK_NEW || exit 1
# One can choose between two diffs:
#
# diff -u $PACKAGE_MASK $PACKAGE_MASK_NEW
#
# shows what has been unmasked again, while
#
# diff -u $PACKAGE_MASK_OLD $PACKAGE_MASK_NEW
#
# shows what changed between your previous and suggested package mask.
# The later shows also what has been added so I find it a little more interesting, and if there is no change then it's obvious too, and one doesn't need too take much attention to it. ;-)
#
# It would be nice if less allowed to quit with non-zero return value, but unfortunately if you want to avoid the changes you'll have to hit Ctrl-Z and kill it...
if diff -u $PACKAGE_MASK_OLD $PACKAGE_MASK_NEW | less
then
mv -f $PACKAGE_MASK_NEW $PACKAGE_MASK
else
rm -f $PACKAGE_MASK_NEW
fi
rm -f $PACKAGE_MASK_OLD
# Leave this here if you also want to know what new stuff is available
emerge --update --pretend world
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#!/usr/bin/env python
# package.py
#
# Python program to mimic the packages unmasked by '##' in package.mask across an 'emerge rsync'
#
# José Fonseca <j_r_fonseca@yahoo.co.uk>
def make_key(operator,category,package,version,release):
key = package
if operator:
key = operator + key
if operator == '=':
key = key + '-' + version
return key
if __name__ == "__main__":
import sys, os, time, glob, re, string
old = sys.argv[1]
new = sys.argv[2]
# Regular expressions to match the packages masks
OPERATOR_RE = r"([*<>=~]+)"
CATEGORY_RE = r"([0-9a-zA-Z]+-[0-9a-zA-Z]+)"
PACKAGE_RE = r"([a-zA-Z+][-+_0-9a-zA-Z]*?)"
NUMBER_RE = r"(?:[a-zA-Z]*[0-9]+|[0-9]+[a-zA-Z]*)"
VERSION_RE = r"(" + NUMBER_RE + r"(?:[._]" + NUMBER_RE + r")*)"
RELEASE_RE = r"(r[0-9]+)"
EXTENSION_RE = r"[0-9a-zA-Z]+"
MASK_RE = OPERATOR_RE + r"?(?:" + CATEGORY_RE + r"/)?" + PACKAGE_RE + r"(?:-" + VERSION_RE + r"\*?(?:-" + RELEASE_RE + r")?)?(?:\." + EXTENSION_RE + r")?"
UNMASK_RE = r"##" + MASK_RE
BEGIN_RE = r"^"
END_RE = r"(?:[ ].*)?\n$"
mask_re = re.compile(BEGIN_RE + MASK_RE + END_RE)
unmask_re = re.compile(BEGIN_RE + UNMASK_RE + END_RE)
# Dictinary to old the unmasked packages keys. The key consists of the operator and package name to cope with multiple ocurrences of the same package
unmasked = {};
# Search for unmasked packages in the old package.mask
f = open(old)
l = f.readline()
while l != "":
if unmask_re.match(l):
begin,operator,category,package,version,release,end = unmask_re.split(l)
key = make_key(operator,category,package,version,release)
unmasked[key] = 1;
l = f.readline()
f.close()
# Unmask them again on the new package.mask
f = open(new)
l = f.readline()
while l != "":
if mask_re.match(l):
begin,operator,category,package,version,release,end = mask_re.split(l)
key = make_key(operator,category,package,version,release)
if unmasked.has_key(key):
print "##" + l,
else:
print l,
else:
print l,
l = f.readline()
f.close()
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