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jardumpr.py
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jardumpr.py
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#!/usr/bin/env python
import os, tempfile, zipfile, re, shutil, argparse, sys
import mglob
import subprocess
import tempfile
BINROOT = os.path.abspath(os.path.dirname(os.path.realpath(__file__)))
def decompile(filelist):
classpath = [
BINROOT + "/bin",
BINROOT + "/lib/*",
]
#print classpath
#assert all(map(os.path.exists, classpath))
os.environ["CLASSPATH"] = ":".join(classpath)
#out = os.popen("java JasminifierClassAdapter " +paths).read()
try:
out = subprocess.check_output(["java", "JasminifierClassAdapter"] + filelist)
except subprocess.CalledProcessError:
print "corrupt: " + repr(filelist)
return
provides = re.findall("^.provide (.*)$", out, re.MULTILINE)
depends = re.findall("^.dep (.*)$", out, re.MULTILINE)
depclasses = set(el.split(';', 1)[0] for el in depends)
provclasses = set(el.split(';', 1)[0] for el in provides)
depclasses -= provclasses
return {'provides': provides, 'depends': depclasses,
'raw': out}
#print "deps", depclasses
tempdirs = []
def c(s):
return os.popen(s).read()
def extract_jar(jarf):
try:
zf = zipfile.ZipFile(jarf, "r")
except zipfile.BadZipfile:
print "corrupt: bad zip,",jarf
raise
td = tempfile.mkdtemp()
tempdirs.append(td)
zf.extractall(td)
return mglob.expand("rec:" + td + "=*.class")
def dump_jar_data(jarf, outf):
#decompile(['data/Local.class'])
# outf.write("# file: " + jarf + "\n")
if jarf.lower().endswith("jar"):
files = extract_jar(jarf)
d = decompile(files)
else:
d = decompile([jarf])
if not d:
# error, don't write anything
return
if args.raw:
outf.write(d['raw'])
return
for k in sorted(set(d['provides'])):
outf.write(k + "\n")
outf.write("#\n# External references\n#\n")
for k in sorted(d['depends']):
outf.write(k + ";ref\n")
def parseargs():
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("jarfiles", metavar="jarfile", nargs="*")
parser.add_argument("--raw", action="store_true", help='dump Jasmin style assembly')
parser.add_argument("--old", type=str, help="old .jar file for comparison")
parser.add_argument("--new", type=str, help="new .jar file for comparison")
parser.add_argument("--test", action="store_true", help="quick sanity test")
args = parser.parse_args()
return args
def parse_diffstat(s):
if not s.strip():
return 0
return int(s.split("|")[1].split()[0])
def compare_dumps(da, db):
#out = c("diff " + da + " " + db)
#print out
out = c("diff " + da + " " + db + " | diffstat -m -f0 -q")
r = parse_diffstat(out)
#print out
lc = open(da).read().count("\n")
if not lc:
print "corrupt: no output"
return
print "changes:",r
print "linecount:",lc
print "per_1k:",(r/float(lc)) * 1000
def compare(a, b):
args.raw = True
af = tempfile.NamedTemporaryFile()
try:
dump_jar_data(a, af)
except Exception,e:
print "corrupt: old, %s, %s" % (a, e.message)
return
bf = tempfile.NamedTemporaryFile()
try:
dump_jar_data(b, bf)
except Exception,e:
print "corrupt: new, %s, %s" % (b, e.message)
return
#print af.name
compare_dumps(af.name, bf.name)
def main():
global args
args = parseargs()
if args.test:
print "Minor change"
compare("test/Original/LCDUITest.jar", "test/MinorChange/LCDUITest.jar")
print "bigger change"
compare("test/Original/LCDUITest.jar", "test/Change/LCDUITest.jar")
return
if args.old:
compare(args.old, args.new)
return
jars = args.jarfiles
#print "process",jars
for j in jars:
dump_jar_data(j, sys.stdout)
for td in tempdirs:
shutil.rmtree(td)
if __name__ == "__main__":
main()