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#!/usr/bin/python -tt
# takes two manifest files and compares to find where things grew
# manifests should be created with
# rpm -qa --qf "%{SIZE}\t%{NAME}\n"
#
import os, sys, string
THRESH = 0.01
def readfile(fn):
pkgs = {}
f = open(fn, "r")
lines = f.readlines()
f.close()
for l in lines:
(size, name) = l.split()
pkgs[name] = size
return pkgs
old = sys.argv[1]
new = sys.argv[2]
oldpkgs = readfile(old)
newpkgs = readfile(new)
for (pkg, size) in newpkgs.items():
if not oldpkgs.has_key(pkg):
print "new package %s: %s" %(pkg, size)
continue
oldsize = oldpkgs[pkg]
if oldsize == "0":
continue
deltapct = (int(size) - int(oldsize)) / float(oldsize)
if deltapct > THRESH:
print "%s grew by %.2f%% (%s->%s)" %(pkg, deltapct*100, oldsize, size)
print "old has %d packages" %(len(oldpkgs),)
print "new has %d packages" %(len(newpkgs),)
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