diff options
Diffstat (limited to 'ranger/container/file.py')
| -rw-r--r-- | ranger/container/file.py | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/ranger/container/file.py b/ranger/container/file.py index efb2a7d8..17ca577c 100644 --- a/ranger/container/file.py +++ b/ranger/container/file.py @@ -4,12 +4,14 @@ from __future__ import (absolute_import, division, print_function) import re +import sys + from ranger.container.fsobject import FileSystemObject N_FIRST_BYTES = 256 -# pylint: disable=invalid-name -control_characters = set(chr(n) for n in set(range(0, 9)) | set(range(14, 32))) -# pylint: enable=invalid-name +CONTROL_CHARACTERS = set(list(range(0, 9)) + list(range(14, 32))) +if sys.version_info[0] < 3: + CONTROL_CHARACTERS = set(chr(n) for n in CONTROL_CHARACTERS) # Don't even try to preview files which match this regular expression: PREVIEW_BLACKLIST = re.compile(r""" @@ -51,19 +53,17 @@ class File(FileSystemObject): @property def firstbytes(self): - if self._firstbytes is None: - try: - with open(self.path, 'r') as fobj: - try: - self._firstbytes = fobj.read(N_FIRST_BYTES) - except UnicodeDecodeError: - return None - except OSError: - return None + if self._firstbytes is not None: + return self._firstbytes + try: + with open(self.path, 'rb') as fobj: + self._firstbytes = set(fobj.read(N_FIRST_BYTES)) + except OSError: + return None return self._firstbytes def is_binary(self): - if self.firstbytes and control_characters & set(self.firstbytes): + if self.firstbytes and CONTROL_CHARACTERS & self.firstbytes: return True return False |