bbf6d9b026
Bugfix for feeds
- removed categories related and up
- load new books now working
- category random now working
login page is free of non accessible elements
boolean custom column is vivible in UI
books with only with certain languages can be shown
book shelfs can be deleted from UI
Anonymous user view is more resticted
Added browse of series in sidebar
Dependencys in vendor folder are updated to newer versions (licencs files are now present)
Bugfix editing Authors names
Made upload on windows working
106 lines
3.4 KiB
Python
106 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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r"""
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werkzeug.posixemulation
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~~~~~~~~~~~~~~~~~~~~~~~
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Provides a POSIX emulation for some features that are relevant to
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web applications. The main purpose is to simplify support for
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systems such as Windows NT that are not 100% POSIX compatible.
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Currently this only implements a :func:`rename` function that
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follows POSIX semantics. Eg: if the target file already exists it
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will be replaced without asking.
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This module was introduced in 0.6.1 and is not a public interface.
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It might become one in later versions of Werkzeug.
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:copyright: (c) 2014 by the Werkzeug Team, see AUTHORS for more details.
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:license: BSD, see LICENSE for more details.
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"""
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import sys
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import os
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import errno
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import time
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import random
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from ._compat import to_unicode
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from .filesystem import get_filesystem_encoding
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can_rename_open_file = False
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if os.name == 'nt': # pragma: no cover
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_rename = lambda src, dst: False
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_rename_atomic = lambda src, dst: False
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try:
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import ctypes
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_MOVEFILE_REPLACE_EXISTING = 0x1
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_MOVEFILE_WRITE_THROUGH = 0x8
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_MoveFileEx = ctypes.windll.kernel32.MoveFileExW
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def _rename(src, dst):
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src = to_unicode(src, get_filesystem_encoding())
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dst = to_unicode(dst, get_filesystem_encoding())
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if _rename_atomic(src, dst):
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return True
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retry = 0
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rv = False
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while not rv and retry < 100:
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rv = _MoveFileEx(src, dst, _MOVEFILE_REPLACE_EXISTING |
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_MOVEFILE_WRITE_THROUGH)
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if not rv:
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time.sleep(0.001)
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retry += 1
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return rv
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# new in Vista and Windows Server 2008
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_CreateTransaction = ctypes.windll.ktmw32.CreateTransaction
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_CommitTransaction = ctypes.windll.ktmw32.CommitTransaction
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_MoveFileTransacted = ctypes.windll.kernel32.MoveFileTransactedW
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_CloseHandle = ctypes.windll.kernel32.CloseHandle
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can_rename_open_file = True
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def _rename_atomic(src, dst):
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ta = _CreateTransaction(None, 0, 0, 0, 0, 1000, 'Werkzeug rename')
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if ta == -1:
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return False
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try:
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retry = 0
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rv = False
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while not rv and retry < 100:
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rv = _MoveFileTransacted(src, dst, None, None,
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_MOVEFILE_REPLACE_EXISTING |
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_MOVEFILE_WRITE_THROUGH, ta)
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if rv:
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rv = _CommitTransaction(ta)
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break
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else:
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time.sleep(0.001)
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retry += 1
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return rv
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finally:
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_CloseHandle(ta)
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except Exception:
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pass
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def rename(src, dst):
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# Try atomic or pseudo-atomic rename
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if _rename(src, dst):
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return
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# Fall back to "move away and replace"
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try:
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os.rename(src, dst)
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except OSError as e:
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if e.errno != errno.EEXIST:
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raise
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old = "%s-%08x" % (dst, random.randint(0, sys.maxint))
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os.rename(dst, old)
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os.rename(src, dst)
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try:
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os.unlink(old)
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except Exception:
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pass
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else:
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rename = os.rename
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can_rename_open_file = True
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