ó TR¹Nc@s„dZddlZddlmZyddlmZWn&ek r^ddlZd„ZnXdgZd„Z d e d „Z dS( sž 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") iÿÿÿÿN(tlocks(tcopystatcCsutj|ƒ}tj|jƒ}ttdƒrOtj||j|jfƒnttdƒrqtj||ƒndS(s?Copy all stat info (mode bits, atime and mtime) from src to dsttutimetchmodN( toststattS_IMODEtst_modethasattrRtst_atimetst_mtimeR(tsrctdsttsttmode((sC/home/panlixing/Python_Projects/gaeseries/django/core/files/move.pyRs tfile_move_safecCs{ttjdƒrAytjj||ƒSWqAtk r=tSXntjjtjj|ƒƒtjjtjj|ƒƒkS(Ntsamefile(RRtpathRtOSErrortFalsetnormcasetabspath(R R ((sC/home/panlixing/Python_Projects/gaeseries/django/core/files/move.pyt _samefiles ii@cCs{t||ƒrdSytj||ƒdSWntk r>nXt|dƒ}z±tj|tjtjBttddƒB| r‡tjpŠdBƒ}zOt j |t j ƒd}x/|dkrÞ|j |ƒ}tj||ƒq°WWdt j|ƒtj|ƒXWd|jƒXt||ƒytj|ƒWnItk rv}t|ddƒdkrwt|ddƒd krw‚qwnXdS( sg Moves a file from one location to another in the safest way possible. First, tries ``os.rename``, which is simple but will break across filesystems. If that fails, streams manually from one file to another in pure Python. If the destination file exists and ``allow_overwrite`` is ``False``, this function will throw an ``IOError``. NtrbtO_BINARYittwinerrori terrnoi (RRtrenameRtopentO_WRONLYtO_CREATtgetattrtO_EXCLRtlocktLOCK_EXtNonetreadtwritetunlocktcloseRtremove(t old_file_namet new_file_namet chunk_sizetallow_overwritetold_filetfdt current_chunkte((sC/home/panlixing/Python_Projects/gaeseries/django/core/files/move.pyR&s4  &   0i( t__doc__Rtdjango.core.filesRtshutilRt ImportErrorRt__all__RRR(((sC/home/panlixing/Python_Projects/gaeseries/django/core/files/move.pyts