You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.7 KiB
86 lines
2.7 KiB
# -*- coding: utf-8 -*-
|
|
|
|
# Copyright 2020-2021 Mike Fährmann
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License version 2 as
|
|
# published by the Free Software Foundation.
|
|
|
|
"""Compare versions of the same file and replace/enumerate them on mismatch"""
|
|
|
|
from .common import PostProcessor
|
|
from .. import text, util, exception
|
|
import sys
|
|
import os
|
|
|
|
|
|
class ComparePP(PostProcessor):
|
|
|
|
def __init__(self, job, options):
|
|
PostProcessor.__init__(self, job)
|
|
if options.get("shallow"):
|
|
self._compare = self._compare_size
|
|
|
|
action = options.get("action")
|
|
if action == "enumerate":
|
|
job.register_hooks({"file": self.enumerate}, options)
|
|
else:
|
|
job.register_hooks({"file": self.compare}, options)
|
|
action, _, smax = action.partition(":")
|
|
self._skipmax = text.parse_int(smax)
|
|
self._skipexc = self._skipcnt = 0
|
|
if action == "abort":
|
|
self._skipexc = exception.StopExtraction
|
|
elif action == "terminate":
|
|
self._skipexc = exception.TerminateExtraction
|
|
elif action == "exit":
|
|
self._skipexc = sys.exit
|
|
|
|
def compare(self, pathfmt):
|
|
try:
|
|
if self._compare(pathfmt.realpath, pathfmt.temppath):
|
|
if self._skipexc:
|
|
self._skipcnt += 1
|
|
if self._skipcnt >= self._skipmax:
|
|
util.remove_file(pathfmt.temppath)
|
|
print()
|
|
raise self._skipexc()
|
|
pathfmt.delete = True
|
|
else:
|
|
self._skipcnt = 0
|
|
except OSError:
|
|
pass
|
|
|
|
def enumerate(self, pathfmt):
|
|
num = 1
|
|
try:
|
|
while not self._compare(pathfmt.realpath, pathfmt.temppath):
|
|
pathfmt.prefix = str(num) + "."
|
|
pathfmt.set_extension(pathfmt.extension, False)
|
|
num += 1
|
|
pathfmt.delete = True
|
|
except OSError:
|
|
pass
|
|
|
|
def _compare(self, f1, f2):
|
|
return self._compare_size(f1, f2) and self._compare_content(f1, f2)
|
|
|
|
@staticmethod
|
|
def _compare_size(f1, f2):
|
|
return os.stat(f1).st_size == os.stat(f2).st_size
|
|
|
|
@staticmethod
|
|
def _compare_content(f1, f2):
|
|
size = 16384
|
|
with open(f1, "rb") as fp1, open(f2, "rb") as fp2:
|
|
while True:
|
|
buf1 = fp1.read(size)
|
|
buf2 = fp2.read(size)
|
|
if buf1 != buf2:
|
|
return False
|
|
if not buf1:
|
|
return True
|
|
|
|
|
|
__postprocessor__ = ComparePP
|