You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
229 lines
7.2 KiB
Python
229 lines
7.2 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright (C) 2012-2013 Johannes 'josch' Schauer <j.schauer at email.de>
|
|
#
|
|
# 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
import sys
|
|
|
|
if len(sys.argv) != 2:
|
|
print "usage: %s /path/to/Sources.bz"%sys.argv[0]
|
|
exit(0)
|
|
|
|
import os
|
|
from os import path
|
|
from collections import Counter, defaultdict
|
|
from subprocess import Popen, PIPE
|
|
from functools import cmp_to_key
|
|
from datetime import datetime
|
|
import apt_pkg
|
|
|
|
pym_path = path.join(path.dirname(path.realpath(__file__)), "portage", "pym")
|
|
sys.path.insert(0, pym_path)
|
|
|
|
from portage.versions import pkgcmp, pkgsplit
|
|
from portage.dep import use_reduce, Atom
|
|
from portage.exception import InvalidAtom
|
|
|
|
# given the starting time, the overall count and the current progress,
|
|
# return a string that shows the remaining time in hours/minutes/seconds
|
|
def estimate_remaining_time(before, count, i):
|
|
now = datetime.now()
|
|
delta = now-before
|
|
# delta in seconds
|
|
delta = delta.days*60*60*24+delta.seconds
|
|
if delta == 0 or i == 0:
|
|
return "n.a."
|
|
speed = float(i)/delta
|
|
remaining = (count - i)/speed
|
|
remaining_hours = remaining/3600
|
|
remaining_minutes = (remaining%3600)/60
|
|
remaining_seconds = remaining%60
|
|
return "%02d:%02d:%02d"%(remaining_hours, remaining_minutes, remaining_seconds)
|
|
|
|
# flatten an arbitrarily nested list
|
|
def flatten(l):
|
|
while l:
|
|
while l and isinstance(l[0], list):
|
|
l[0:1] = l[0]
|
|
if l: yield l.pop(0)
|
|
|
|
# read mapping between Gentoo and Debian source packages
|
|
deb2gen = defaultdict(list)
|
|
gen2deb = defaultdict(list)
|
|
with open("./deb2gen_mapping.list") as f:
|
|
for line in f:
|
|
d, g = line.strip().split('\t')
|
|
deb2gen[d].append(g)
|
|
gen2deb[g].append(d)
|
|
|
|
with open("./deb_source_pkgs.list") as f:
|
|
debian_names = [p[4:].strip() for p in f]
|
|
|
|
portdir = "./portdir"
|
|
|
|
pkgnames = list()
|
|
|
|
# traverse ./portdir to find .ebuild files that interest us
|
|
for cat in os.listdir(portdir):
|
|
catpath = os.path.join(portdir, cat)
|
|
|
|
if not os.path.isdir(catpath):
|
|
continue
|
|
|
|
for pkg in os.listdir(catpath):
|
|
pkgpath = os.path.join(catpath, pkg)
|
|
|
|
if not os.path.isdir(pkgpath):
|
|
continue
|
|
|
|
# get all .ebuild files
|
|
pkgs = [pkgsplit(ver[:-7]) for ver in os.listdir(pkgpath) if ver.endswith(".ebuild")]
|
|
|
|
if not pkgs:
|
|
continue
|
|
|
|
# only grab newest package
|
|
pkg, ver, rev = sorted(pkgs, key=cmp_to_key(pkgcmp), reverse=True)[0]
|
|
deb = gen2deb.get("%s/%s"%(cat, pkg), [])
|
|
|
|
# assure that the package is relevant
|
|
if not any(d for d in deb if d in debian_names):
|
|
continue
|
|
|
|
pkgnames.append((cat, pkg, ver, rev))
|
|
sys.stderr.write("\rGenerating list of packages... %d"%len(pkgnames))
|
|
|
|
sys.stderr.write("\rGenerating list of packages... Done.\n")
|
|
|
|
count = 0
|
|
|
|
before = datetime.now()
|
|
|
|
debian_deps = dict()
|
|
missing_gen_mappings = list()
|
|
|
|
# look for reduced build dependencies of gentoo packages by extracting all
|
|
# dependencies that need a USE flag to be set
|
|
for i, (cat, pkg, ver, rev) in enumerate(pkgnames):
|
|
if rev == "r0":
|
|
pkgname = "%s/%s-%s"%(cat, pkg, ver)
|
|
else:
|
|
pkgname = "%s/%s-%s-%s"%(cat, pkg, ver, rev)
|
|
p = Popen(["./portage/bin/portageq", "metadata", "/", "ebuild", pkgname, "DEPEND"], stderr=PIPE, stdout=PIPE, env={"PORTDIR": portdir})
|
|
r = p.communicate()
|
|
if p.returncode != 0:
|
|
sys.stderr.write("cannot parse %s. Output: %s\n"%(pkgname, r[1]))
|
|
depend = r[0]
|
|
all_use = use_reduce(depend, matchall=True)
|
|
no_use = use_reduce(depend, matchnone=True)
|
|
l = list()
|
|
for a in all_use:
|
|
# filter out all dependencies that are also present when USE flags are disabled
|
|
if a in no_use:
|
|
continue
|
|
|
|
if not isinstance(a, list) :
|
|
a = [a]
|
|
else:
|
|
# there are disjunctions but we better collect to many build dependencies than too few
|
|
a = flatten(a)
|
|
|
|
for p in a:
|
|
if p == "||":
|
|
continue
|
|
|
|
try:
|
|
l.append(Atom(p).cp)
|
|
except InvalidAtom:
|
|
sys.stderr.write("Invalid Atom for %s: %s\n"%(pkgname, str(p)))
|
|
except TypeError:
|
|
sys.stderr.write("TypeError for %s: %s\n"%(pkgname, str(p)))
|
|
|
|
if l:
|
|
ddeps = []
|
|
for p in l:
|
|
r = gen2deb.get(p)
|
|
|
|
if not r:
|
|
missing_gen_mappings.append(p)
|
|
continue
|
|
|
|
ddeps.extend(r)
|
|
debian_deps["%s/%s"%(cat,pkg)] = list(set(ddeps))
|
|
count +=1
|
|
|
|
sys.stderr.write("\rFinding reduced dependencies: %d/%d, found %d. Estimated time left: %s h"%(i+1, len(pkgnames), count, estimate_remaining_time(before, len(pkgnames), i)))
|
|
sys.stdout.flush()
|
|
|
|
sys.stderr.write("\rFinding reduced dependencies: %d/%d, found %d. Estimated time left: %s h\n"%(i+1, len(pkgnames), count, estimate_remaining_time(before, len(pkgnames), i)))
|
|
|
|
missing_deb_mappings = list()
|
|
|
|
src2bin = dict()
|
|
src_deps = dict()
|
|
|
|
# get the actual Debian build dependencies for all interesting packages from a
|
|
# Sources file
|
|
for pkg in apt_pkg.TagFile(sys.argv[1]):
|
|
p = pkg['Package']
|
|
try:
|
|
src_deps[p] = [name for (name,ver,rel) in flatten(apt_pkg.parse_src_depends(pkg.get('Build-Depends', '')))]
|
|
except ValueError:
|
|
print "cannot parse depends line for %s: %s"%(pkg['Package'], pkg.get('Build-Depends'))
|
|
src_deps[p] = []
|
|
src2bin[p] = [b.strip() for b in pkg['Binary'].split(',')]
|
|
|
|
all_droppable = list()
|
|
|
|
# process all debian source packages and output those build dependencies that
|
|
# build from a source package which is not needed by the corresponding Gentoo
|
|
# package
|
|
for d in debian_names:
|
|
# find gentoo package name
|
|
g = deb2gen.get(d)
|
|
if not g:
|
|
missing_deb_mappings.append(d)
|
|
continue
|
|
|
|
# get the droppable dependencies
|
|
deps = []
|
|
for r in g:
|
|
deps.extend(debian_deps.get(r, []))
|
|
|
|
if not deps:
|
|
continue
|
|
|
|
bindeps = list()
|
|
# get the debian build dependencies
|
|
pdeps = src_deps[d]
|
|
|
|
# for each droppable dependency
|
|
for r in deps:
|
|
# convert source package to binary packages
|
|
# only retain those binary packages that are a build dependency
|
|
bindeps.extend([p for p in src2bin.get(r, []) if p in pdeps])
|
|
|
|
if bindeps:
|
|
print "src:%s %s"%(d, " ".join(bindeps))
|
|
|
|
all_droppable.extend(bindeps)
|
|
|
|
sys.stderr.write("missing debsrc mapping: %s\nmissing gentoo mapping: %s\n"%(" ".join(sorted(set(missing_deb_mappings)))," ".join(sorted(set(missing_gen_mappings)))))
|
|
|
|
drop_freq = Counter(all_droppable)
|
|
|
|
for package, freq in drop_freq.most_common(20):
|
|
sys.stderr.write("%s: %s\n"%(package, freq))
|