o پiT @sbdZddlZddlZddlmZddlmZddlmZddl m Z d d d Z Gd d d e Z dS)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)ReaderTcstdd}g}g}|D].}|sq tj|j\}}tj|} tj|d} | |vr;| || | q durUt |} t t | t d} ddt| Dfddt||D} |rkt | d d d} | fS) NT)as_setr)keycSsi|]\}}||qSr ).0idxcr r V/home/ubuntu/.local/lib/python3.10/site-packages/timm/data/readers/reader_image_tar.py "sz#extract_tarinfo..cs$g|]\}}|vr||fqSr r )r fl class_to_idxr r #s$z#extract_tarinfo..cSst|djSNr)rpath)kr r r %sz!extract_tarinfo..)r getmembersisfileosrsplitbasenamesplitextlowerappendsetlistsortedr enumeratezip)tarfilersort extensionsfileslabelstidirnamerlabelext unique_labels sorted_labelstarinfo_and_targetsr rr extract_tarinfos*      r1cs<eZdZdZd fdd ZddZddZd d d ZZS)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. cstd}|rt||}tj|sJ||_t|}t ||\|_ |_ Wdn1s2wY|j |_ d|_dSN) super__init__rrrrrootr%openr1samplesrimgs)selfr7 class_maprtf __class__r r r6.s    zReaderImageTar.__init__cCs:|jdur t|j|_|j|\}}|j|}||fSr4)r%r8r7r9 extractfile)r;indextarinfotargetfileobjr r r __getitem__<s  zReaderImageTar.__getitem__cCs t|jSr4)lenr9)r;r r r __len__Cs zReaderImageTar.__len__FcCs$|j|dj}|rtj|}|Sr)r9namerrr)r;rArabsolutefilenamer r r _filenameFs zReaderImageTar._filename)r3)FF) __name__ __module__ __qualname____doc__r6rErGrK __classcell__r r r>r r2)s r2)NT) rOrr%timm.utils.miscrr<rimg_extensionsrreaderrr1r2r r r r s