jfdZddlmZddlmZmZddlmZddlmZddgZ d Z Gd dZ d S) z2Utilities common to reading and writing PDF files.)Tuple)genericmisc)DocumentMetadata)PdfError PdfHandlerfind_inherited_value_in_treecv|} ||S#t$r ||}n#t$rYYn wxYwYnwxYw5dSN)KeyError)init_objkey parent_keyobjs j/var/www/finuniver-perm.ru/html/portfolio/venv/lib/python3.11/site-packages/pyhanko/pdf_utils/rw_common.pyr r sz C s8O    *o      4s$ 5!5 /5/55ceZdZdZ ddejdefdZedej fdZ ede fdZ edejfd Z edej fd Zedeeeffd Zd Zd ZdZdS)r zfAbstract class providing a general interface for quering objects in PDF readers and writers alike.Frefas_metadata_streamct)aO Retrieve the object associated with the provided reference from this PDF handler. :param ref: An instance of :class:`.generic.Reference`. :param as_metadata_stream: Whether to dereference the object as an XMP metadata stream. :return: A PDF object. NotImplementedError)selfrrs r get_objectzPdfHandler.get_object "!returnct)a Returns a view of the document trailer of the document represented by this :class:`.PdfHandler` instance. The view is effectively read-only, in the sense that any writes will not be reflected in the actual trailer (if the handler supports writing, that is). :return: A :class:`.generic.DictionaryObject` representing the current state of the document trailer. rrs r trailer_viewzPdfHandler.trailer_view-rrctr rrs rdocument_meta_viewzPdfHandler.document_meta_view=!!rct)zS :return: A reference to the document catalog of this PDF handler. rrs rroot_refzPdfHandler.root_refAs "!rcp|j}t|tjsJ|S)zD :return: The document catalog of this PDF handler. )r%r isinstancerDictionaryObject)rroots rr)zPdfHandler.rootHs5 }''))$ 899999 rctr rrs r document_idzPdfHandler.document_idQr#rc|jd}t|tjsJ|}t|tjsJ |d}n##t$rtj}YnwxYw|d}dkr|zdcxkr|ksntdfdd||tS)N/Pages /Resources/CountrzPage index out of rangec|}|d} |d}n#t$rYnwxYw|}t|D]\}}t |t jstjdt |t jsJ|j |vrtjd|} | d} | dkr:| d} | cxkr || zkrnn |||||j hzcS|| z }| dkrA| kr6r|||fcS | d}n#t$rYnwxYw||fcS|d z }td ) Nz/Kidsr.z0Page tree node children must be indirect objectszCircular reference in page treez/Typer-r/z/PagerzPage not found) rraw_getr enumerater'rIndirectObjectr PdfReadError referencer) first_page_ix pages_obj_reflast_rsrc_dict refs_seen pages_objkids cur_page_ix kid_indexkid_refkid node_type desc_count_recursepage_ixretrieve_parents rrBz,PdfHandler._walk_page_tree.._recursegs%0022IW%D !*!2!2""""  "g6 " " "X ""$4"""X""'+"""X" g.X"U5%<0"""X"AFAFAFFCCC$ D D D D DrN) rUtypingrrrmetadata.modelrr__all__r r rZrrr_s88,,,,,, 7 8   _D_D_D_D_D_D_D_D_D_Dr