utils.py 文件源码

def __hashDir(self, prefix, path=b''):
        entries = []
        try:
            dirEntries = os.listdir(os.path.join(prefix, path if path else b'.'))
        except OSError as e:
            logging.getLogger(__name__).warning("Cannot list directory: %s", str(e))
            dirEntries = []

        for f in dirEntries:
            e = os.path.join(path, f)
            try:
                s = os.lstat(os.path.join(prefix, e))
                if stat.S_ISDIR(s.st_mode):
                    # skip useless directories
                    if f in self.__ignoreDirs: continue
                    # add training '/' for directores for correct sorting
                    f = f + os.fsencode(os.path.sep)
                else:
                    # skip useless files
                    if f in DirHasher.IGNORE_FILES: continue
                entries.append((e, f, s))
            except OSError as err:
                logging.getLogger(__name__).warning("Cannot stat '%s': %s", e, str(err))
        entries = sorted(entries, key=lambda x: x[1])
        dirList = [
            (struct.pack("=L", s.st_mode) + self.__hashEntry(prefix, e, s) + f)
            for (e, f, s) in entries
        ]
        dirBlob = b"".join(dirList)
        m = hashlib.sha1()
        m.update(dirBlob)
        return m.digest()