
    kh                         d Z ddlZddlmZmZmZmZmZmZ ddl	m
Z
 ddlmZ ddlmZ ddlmZ 	 	 	 	 dd	ed
eeeeef      dee   dedef
dZ G d de      Zy)z A dataset reader that extracts images from folders

Folders are scanned recursively to find image files. Labels are based
on the folder hierarchy, just leaf folders by default.

Hacked together by / Copyright 2020 Ross Wightman
    N)DictListOptionalSetTupleUnionnatural_key   )load_class_map)get_img_extensions)Readerfoldertypesclass_to_idxleaf_name_onlysortc                 t   |st        d      n
t        |      }g }g }t        j                  | dd      D ]  \  }}}	|| k7  r t        j                  j                  ||       nd}
|rt        j                  j                  |
      n)|
j                  t        j                  j                  d      }|	D ]w  }t        j                  j                  |      \  }}|j                         |v s8|j                  t        j                  j                  ||             |j                  |       y  |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 )	a   Walk folder recursively to discover images and map them to classes by folder names.

    Args:
        folder: root of folder to recursively search
        types: types (file extensions) to search for in path
        class_to_idx: specify mapping for class (folder name) to class index if set
        leaf_name_only: use only leaf-name of folder walk for class names
        sort: re-sort found images by name (for consistent ordering)

    Returns:
        A list of image and target tuples, class_to_idx mapping
    T)as_setF)topdownfollowlinks _)keyc                     t        | d         S Nr   r	   )ks    a/var/www/teggl/fontify/venv/lib/python3.12/site-packages/timm/data/readers/reader_image_folder.py<lambda>z)find_images_and_targets.<locals>.<lambda>7   s    kRSTURVFW     )r   setoswalkpathrelpathbasenamereplacesepsplitextlowerappendjoinlistsortedr
   	enumeratezip)r   r   r   r   r   labels	filenamesrootsubdirsfilesrel_pathlabelfbaseextunique_labelssorted_labelsidxclimages_and_targetss                        r   find_images_and_targetsrA      s   & 49d+c%jEFI "4 P %gu59V^277??40".<  *(BRBRSUSZSZS^S^`cBd 	%A((+ID#yy{e#  dA!67e$		%% FVM{CD-6}-EF633FF;>y&;Qg41aUVZfUf1l1o.gg#$6<WX|++	 Ggs   "F.F4	F4c                   8     e Zd Z	 	 d fd	Zd Zd ZddZ xZS )ReaderImageFolderc           	      0   t         |           || _        d }|rt        ||      }d }|r|j	                  d      }t        |||      \  | _        | _        t        | j                        dk(  r(t        d| ddj                  t                            y )N;)r   r   r   z Found 0 images in subfolders of z!. Supported image extensions are z, )super__init__r3   r   splitrA   samplesr   lenRuntimeErrorr,   r   )selfr3   	class_map	input_keyr   
find_types	__class__s         r   rG   zReaderImageFolder.__init__=   s     		))T:L
"-J*A%+
'd'
 t||!24& 9226))<N<P2Q1RTU U "r    c                 B    | j                   |   \  }}t        |d      |fS )Nrb)rI   open)rL   indexr$   targets       r   __getitem__zReaderImageFolder.__getitem__V   s&    ||E*fD$''r    c                 ,    t        | j                        S )N)rJ   rI   )rL   s    r   __len__zReaderImageFolder.__len__Z   s    4<<  r    c                     | j                   |   d   }|r!t        j                  j                  |      }|S |s*t        j                  j	                  || j
                        }|S r   )rI   r"   r$   r&   r%   r3   )rL   rT   r&   absolutefilenames        r   	_filenamezReaderImageFolder._filename]   sU    <<&q)ww''1H  wwx;Hr    )r   N)FF)__name__
__module____qualname__rG   rV   rX   r\   __classcell__)rP   s   @r   rC   rC   ;   s     
 	U2(!r    rC   )NNTT)__doc__r"   typingr   r   r   r   r   r   timm.utils.miscr
   rM   r   img_extensionsr   readerr   strboolrA   rC    r    r   <module>ri      s    
 : : ' % . 
 48'+#&,&,dE3./0&, tn&, 	&,
 &,R( (r    