/usr/lib/python3/dist-packages/diffoscope/comparators/java.py is in diffoscope 93ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | # -*- coding: utf-8 -*-
#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2015 Reiner Herrmann <reiner@reiner-h.de>
# 2015 Jérémy Bobbio <lunar@debian.org>
#
# diffoscope 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.
#
# diffoscope 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 diffoscope. If not, see <https://www.gnu.org/licenses/>.
import re
import os.path
import logging
from diffoscope.tools import tool_required
from diffoscope.difference import Difference
from diffoscope.exc import RequiredToolNotFound
from .utils.file import File
from .utils.command import Command
logger = logging.getLogger(__name__)
class ProcyonDecompiler(Command):
def __init__(self, path, *args, **kwargs):
super().__init__(path, *args, **kwargs)
self.real_path = os.path.realpath(path)
@tool_required('procyon-decompiler')
def cmdline(self):
return ['procyon-decompiler', '-ec', self.path]
def filter(self, line):
if re.match(r'^(//)', line.decode('utf-8')):
return b''
return line
class Javap(Command):
def __init__(self, path, *args, **kwargs):
super().__init__(path, *args, **kwargs)
self.real_path = os.path.realpath(path)
@tool_required('javap')
def cmdline(self):
return [
'javap',
'-verbose',
'-constants',
'-s',
'-l',
'-private',
self.path
]
def filter(self, line):
regex = r'^(Classfile {}$| Last modified | MD5 checksum )'.format(
re.escape(self.real_path)
)
if re.match(regex, line.decode('utf-8')):
return b''
return line
class ClassFile(File):
DESCRIPTION = "Java .class files"
FILE_TYPE_RE = re.compile(r'^compiled Java class data\b')
decompilers = [ProcyonDecompiler, Javap]
def compare_details(self, other, source=None):
diff = None
for decompiler in self.decompilers:
try:
diff = [
Difference.from_command(decompiler, self.path, other.path)
]
if diff:
break
except RequiredToolNotFound:
logger.debug("Unable to find %s. Falling back...",
decompiler.__name__)
if not diff:
raise RequiredToolNotFound(self.decompilers[-1])
return diff
|