U m f @sHdZddlZddlZddlmZddlmZdgZddZd 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_safecCs\ttjdr4ztj||WStk r2YdSXtjtj|tjtj|kS)NsamefileF)hasattrospathrOSErrornormcaseabspath)srcdstr:/tmp/pip-unpacked-wheel-siwebuq3/django/core/files/move.py _samefiles  rFc Csvt||rdSz0|s.t|tjr.td|t||WdStk rRYnXt|d}t|tjtj Bt tddB|stj ndB}z6t |t jd}|dkr||}t||qW5t |t|XW5QRXzt||Wn4tk r(}z|jtjkrW5d}~XYnXzt|Wn8tk rp}zt |dddkr`W5d}~XYnXdS) 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_EXCLrZunlockcloselockZLOCK_EXreadwriterPermissionErrorerrnoEPERMremove)Z old_file_nameZ new_file_name chunk_sizeZallow_overwriteZold_filefdZ current_chunkerrrrsT        )rF) __doc__r%rshutilrZdjango.core.filesr__all__rrrrrrs