v^ @sidZddlZddlZddlmZddlmZdgZddZd d d dZ dS) z Move a file in the safest way possible:: >>> from django.core.files.move import file_move_safe >>> file_move_safe("/tmp/old_file", "/tmp/new_file") N)copystat)locksfile_move_safec Cs|ttjdrBytjj||SWntk rAdSYnXtjjtjj|tjjtjj|kS)NsamefileF)hasattrospathrOSErrornormcaseabspath)srcdstr8/tmp/pip-build-8lau8j11/django/django/core/files/move.py _samefiles  ri@Fc5Cst||rdSyD| rBtj|tjrBtd|tj||dSWntk rkYnXt|d}tj|tjtj Bt tddB|stj ndB}zOt j |t jd}x/|dkr |j|}tj||qWWdt j|tj|XWdQRXyt||Wn:tk r~}z|jtjkrlWYdd}~XnXytj|Wn@tk r}z t |dddkrWYdd}~XnXdS) aU Move a file from one location to another in the safest way possible. First, try ``os.rename``, which is simple but will break across filesystems. If that fails, stream manually from one file to another in pure Python. If the destination file exists and ``allow_overwrite`` is ``False``, raise ``FileExistsError``. Nz8Destination file %s exists and allow_overwrite is False.rbO_BINARYrwinerror )rraccessF_OKFileExistsErrorrenamer openO_WRONLYO_CREATgetattrO_EXCLrlockLOCK_EXreadwriteZunlockcloserPermissionErrorerrnoEPERMremove)Z old_file_nameZ new_file_name chunk_sizeZallow_overwriteZold_filefdZ current_chunkerrrrs<  & i) __doc__r&rshutilrZdjango.core.filesr__all__rrrrrrs