o gi$@sLdZddlZddlZddlmZddlmZGdddZGdddZdS) z This class is the base implementation of a transformer pattern. It reads bytes from a PDF document, and converts it to JSON-like datastructures. N) AnyPDFType) Referencec@sBeZdZdZ  ddejejejej fdeje fddZ dS)WriteTransformerStateaL This class represents all the meta-information used in the process of persisting a PDF document. This includes: - the root object (the Document itself) - a cache of indirect objects (by id and hash) - references that have been resolved (to avoid endless loops) - the default compression level - etc N destination root_objectcCs.||_||_i|_i|_g|_d|_d|_dS)N F)rrindirect_objects_by_idindirect_objects_by_hashresolved_referencescompression_levelapply_font_subsetting)selfrrrM/home/ubuntu/.local/lib/python3.10/site-packages/borb/io/write/transformer.py__init__s zWriteTransformerState.__init__)NN) __name__ __module__ __qualname____doc__typingOptionalUnionioBufferedIOBase RawIOBaserrrrrrrsrc@seZdZdZddZdedejefddZ e dej d e fd d Z dedejefd d Z  dddZdefddZdeded efddZdddZ ddedejefddZdS) Transformerz This class represents the base transformer for persisting a PDF Document. It allows you to add child BaseWriteTransformer implementations to handle specific cases, such as persisting Image objects, or Dictionary objects, etc. cCsg|_d|_dSN) _handlers_parent)r rrrrBs zTransformer.__init__object_to_transformcontextcCs8|dusJd|jdusJd|jtdddS)ze This function writes the "endobj" bytes whenever a direct object needs to be closed NKA WriteTransformerState must be defined in order to write indirect objects.zendobj latin1)rwritebytes)r rr rrr _end_objectJs zTransformer._end_objectobjreturncCsLd}zt|}WnYz|}WnY|dur$td|jj|S)Nzunhashable type: %s)hash__hash__ TypeError __class__r)r&hrrr_hashYs  zTransformer._hashcCs|dusJd|jdusJd|j}|}|dus Jt|ts'J||_|jdus1J|jtd|j|j psz-Transformer.get_reference..cSsg|]\}}|qSrr)r;kvrrrr>s)r2) is_uniqueidrr0rr/r-r set_referencesetitemslenr7) r r9r rBobj_idcached_indirect_objectr4obj_hashr&existing_obj_numbers obj_numberrrrr/sN             zTransformer.get_referencecCs>|}|dur|jdur|j}|dur|jdus |dusJ|S)a This function returns the WriteBaseTransformer at the root of this WriteBaseTransformer hierarchy. This allows child WriteBaseTransformer implementations to call the root transformer. This is useful for instance when transforming a dictionary, where each key/value would then be transformed by delegating the call to the root WriteBaseTransformer. N)r)r prrrget_root_transformers  z Transformer.get_root_transformerNcCs2d}|jD]}||r|j||d}|Sq|S)z} This method writes an object (of type AnyPDFType) to a byte stream (specified in the WriteTransformerState) N)r )rr: transform)r rr return_valuer,rrrrOs  zTransformer.transform)r6rr'r)r'rr)rrrrrrrrrr% staticmethodAnyintr-r5r8r:rr/rNrOrrrrr7sF   $  >r)rrrborb.io.read.typesrrrrrrrrs  )