o
    پi
                  
   @   s   d Z ddlZddlZddlmZ ddlZddlmZ ddl	m
Z
 zddlZW n ey8 Z zed edZ[ww ddlmZ ddlmZ dd
dZG dd deZdS )zd Dataset reader that wraps Hugging Face datasets

Hacked together by / Copyright 2022 Ross Wightman
    N)Optional)ImagezDPlease install Hugging Face datasets package `pip install datasets`.   )load_class_map)Readerlabelc                    s0   d| j vri S | j |   fdd jD }|S )Nr   c                    s   i | ]}|  |qS  )str2int).0nclass_labelr   Q/home/ubuntu/.local/lib/python3.10/site-packages/timm/data/readers/reader_hfds.py
<dictcomp>   s    z$get_class_labels.<locals>.<dictcomp>)featuresnames)info	label_keyclass_to_idxr   r   r   get_class_labels   s
   

r   c                       sl   e Zd Z							ddedee ded	ed
edededef fddZdd Zdd Z	dddZ
  ZS )
ReaderHfdsNtrainimager   Fnamerootsplit	class_map	input_key
target_keydownloadtrust_remote_codec	           	         s   t    || _|| _tj||| j|d| _| j|tjdd| _|| _	|| _
d| _|r6t|| _d| _n	t| jj| j
| _| jjj| | _| jj| _dS )z	
        )r   	cache_dirr    F)decodeTN)super__init__r   r   datasetsload_datasetdatasetcast_columnr   	image_keyr   remap_classr   r   r   r   splits
split_infonum_examplesnum_samples)	selfr   r   r   r   r   r   r   r    	__class__r   r   r$       s&   

zReaderHfds.__init__c                 C   sx   | j | }|| j }d|v r|d rt|d }nd|v r"|d s$J t|d d}|| j }| jr8| j| }||fS )Nbytespathrb)r'   r)   ioBytesIOopenr   r*   r   )r/   indexitemr   r   r   r   r   __getitem__D   s   



zReaderHfds.__getitem__c                 C   s
   t | jS )N)lenr'   )r/   r   r   r   __len__Q   s   
zReaderHfds.__len__c                 C   s   | j | }|| j d S )Nr3   )r'   r)   )r/   r8   basenameabsoluter9   r   r   r   	_filenameT   s   
zReaderHfds._filename)Nr   Nr   r   FF)FF)__name__
__module____qualname__strr   dictboolr$   r:   r<   r?   __classcell__r   r   r0   r   r      s8    	$r   )r   )__doc__r5   mathtypingr   torchtorch.distributeddistributeddistPILr   r%   ImportErroreprintr   r   readerr   r   r   r   r   r   r   <module>   s$    
