
    khT
                     f    d Z ddlZddlZddlmZ ddlmZ ddlmZ ddl	m
Z
 ddZ G d	 d
e
      Zy)z A dataset reader that reads single tarfile based datasets

This reader can read datasets consisting if a single tarfile containing images.
I am planning to deprecated it in favour of ParerImageInTar.

Hacked together by / Copyright 2020 Ross Wightman
    N)natural_key   )load_class_map)get_img_extensions)Readerc                    t        d      }g }g } | j                         D ]  }|j                         st        j                  j                  |j                        \  }}t        j                  j                  |      }	t        j                  j                  |      d   }
|
j                         |v s|j                  |       |j                  |	        |Ct        |      }t        t        |t                    }t        |      D ci c]  \  }}||
 }}}t        ||      D cg c]  \  }}||v s|||   f }}}|rt        |d       }||fS c c}}w c c}}w )NT)as_setr   )keyc                 2    t        | d   j                        S Nr   )r   path)ks    ^/var/www/teggl/fontify/venv/lib/python3.12/site-packages/timm/data/readers/reader_image_tar.py<lambda>z!extract_tarinfo.<locals>.<lambda>%   s    TUVWTXT]T]H^     )r   
getmembersisfileosr   splitbasenamesplitextlowerappendsetlistsortedr   	enumeratezip)tarfileclass_to_idxsort
extensionsfileslabelstidirnamer   labelextunique_labelssorted_labelsidxcfltarinfo_and_targetss                     r   extract_tarinfor0      sC   #40JEF g  " !yy{GGMM"''2  )ggx(+99;*$LLMM% ! FVM{CD-6}-EF633FF<?v<NdDAqRSWcRcA|A/dd$%8>^_,,	 Gds   E.E!;	E!c                   8     e Zd ZdZd fd	Zd Zd ZddZ xZS )ReaderImageTarz Single tarfile dataset where classes are mapped to folders within tar
    NOTE: This class is being deprecated in favour of the more capable ReaderImageInTar that can
    operate on folders of tars or tars in tars.
    c                 H   t         |           d }|rt        ||      }t        j                  j                  |      sJ || _        t        j                  |      5 }t        ||      \  | _
        | _        d d d        | j                  | _        d | _        y # 1 sw Y   "xY wN)super__init__r   r   r   r   rootr   openr0   samplesr    imgs)selfr7   	class_mapr    tf	__class__s        r   r6   zReaderImageTar.__init__.   s    ))T:Lww~~d###	\\$ 	P2.=b,.O+DL$+	PLL		P 	Ps   BB!c                     | j                   $t        j                  | j                        | _         | j                  |   \  }}| j                   j	                  |      }||fS r4   )r   r8   r7   r9   extractfile)r;   indextarinfotargetfileobjs        r   __getitem__zReaderImageTar.__getitem__<   sP    <<"<<		2DL,,u-,,**73r   c                 ,    t        | j                        S r4   )lenr9   )r;   s    r   __len__zReaderImageTar.__len__C   s    4<<  r   c                     | j                   |   d   j                  }|rt        j                  j	                  |      }|S r   )r9   namer   r   r   )r;   rA   r   absolutefilenames        r   	_filenamezReaderImageTar._filenameF   s7    <<&q)..ww''1Hr   ) )FF)	__name__
__module____qualname____doc__r6   rE   rH   rM   __classcell__)r>   s   @r   r2   r2   )   s    !r   r2   )NT)rR   r   r   timm.utils.miscr   r<   r   img_extensionsr   readerr   r0   r2    r   r   <module>rX      s/    
  ' % . -.!V !r   