U ÕCd£%ã@sTddlmZddlZddlmZe e¡Zdd„ZGdd„dƒZ d d „Z e ƒe _ dS) é)ÚdequeNé)ÚInvalidTableIndexcCsdt|ƒt|ƒS)aW Calculates the size of a single entry This size is mostly irrelevant to us and defined specifically to accommodate memory management for lower level implementations. The 32 extra bytes are considered the "maximum" overhead that would be required to represent each entry in the table. See RFC7541 Section 4.1 é )Úlen)ÚnameÚvalue©r ú//tmp/pip-unpacked-wheel-eus5hmsv/hpack/table.pyÚtable_entry_size s r c@sjeZdZdZdZdZeeƒZdd„Zdd„Z dd „Z d d „Z d d „Z e dd„ƒZejdd„ƒZdd„ZdS)Ú HeaderTablezø Implements the combined static and dynamic header table The name and value arguments for all the functions should ONLY be byte strings (b'') however this is not strictly enforced in the interface. See RFC7541 Section 2.3 i)=)s :authorityó)ó:methodsGET)rsPOST)ó:pathó/)rs /index.html)ó:schemeshttp)rshttps)ó:statuss200)rs204)rs206)rs304)rs400)rs404)rs500)saccept-charsetr )saccept-encodings gzip, deflate)saccept-languager )s accept-rangesr )sacceptr )saccess-control-allow-originr )sager )sallowr )s authorizationr )s cache-controlr )scontent-dispositionr )scontent-encodingr )scontent-languager )scontent-lengthr )scontent-locationr )s content-ranger )s content-typer )scookier )sdater )setagr )sexpectr )sexpiresr )sfromr )shostr )sif-matchr )sif-modified-sincer )s if-none-matchr )sif-ranger )sif-unmodified-sincer )s last-modifiedr )slinkr )slocationr )s max-forwardsr )sproxy-authenticater )sproxy-authorizationr )sranger )srefererr )srefreshr )s retry-afterr )sserverr )s set-cookier )sstrict-transport-securityr )stransfer-encodingr )s user-agentr )svaryr )sviar )swww-authenticater cCs tj|_d|_d|_tƒ|_dS)NrF)r Ú DEFAULT_SIZEÚ_maxsizeÚ _current_sizeÚresizedrÚdynamic_entries©Úselfr r r Ú__init__lszHeaderTable.__init__cCsZ|}|d8}d|krJ|tjkr(tj|S|tj8}|t|jƒkrJ|j|Std|ƒ‚dS)an Returns the entry specified by index Note that the table is 1-based ie an index of 0 is invalid. This is due to the fact that a zero value index signals that a completely unindexed header follows. The entry will either be from the static table or the dynamic table depending on the value of index. rrzInvalid table index %dN)r ÚSTATIC_TABLE_LENGTHÚ STATIC_TABLErrr)rÚindexZoriginal_indexr r r Ú get_by_indexrs     zHeaderTable.get_by_indexcCsd|j|j|jfS)NzHeaderTable(%d, %s, %r))rrrrr r r Ú__repr__Šs ýzHeaderTable.__repr__cCsPt||ƒ}||jkr&|j ¡d|_n&|j ||f¡|j|7_| ¡dS)z• Adds a new entry to the table We reduce the table size if the entry will make the table size greater than maxsize. rN)r rrÚclearrÚ appendleftÚ_shrink)rrrÚsizer r r Úadd‘s   zHeaderTable.addc Cs d}tj |¡}|rB|d |¡}|dk r4|||fS|d|df}tjd}t|jƒD]D\}\}} ||krV| |kr„|||| fS|dkrV|||df}qV|S)a) Searches the table for the entry specified by name and value Returns one of the following: - ``None``, no match at all - ``(index, name, None)`` for partial matches on name only. - ``(index, name, value)`` for perfect matches. Nrr)r ÚSTATIC_TABLE_MAPPINGÚgetrÚ enumerater) rrrÚpartialÚheader_name_search_resultrÚoffsetÚiÚnÚvr r r Úsearch£s    zHeaderTable.searchcCs|jS)N)rrr r r ÚmaxsizeÀszHeaderTable.maxsizecCs\t|ƒ}t d||j¡|j}||_||k|_|dkrH|j ¡d|_n||krX| ¡dS)Nz#Resizing header table to %d from %dr) ÚintÚlogÚdebugrrrr rr")rZnewmaxZoldmaxr r r r/Äs  cCsF|j}||jkr<|j ¡\}}|t||ƒ8}t d||¡q||_dS)zE Shrinks the dynamic table to be at or below maxsize z%Evicting %s: %s from the header tableN)rrrÚpopr r1r2)rZcursizerrr r r r"Ñs  zHeaderTable._shrinkN)Ú__name__Ú __module__Ú __qualname__Ú__doc__rrrrrrrr$r.Úpropertyr/Úsetterr"r r r r r s @  r cCs>i}ttjdƒD](\}\}}| ||if¡}||d|<q|S)zÐ Build static table mapping from header name to tuple with next structure: (, ). static_table_mapping used for hash searching. r)r'r rÚ setdefault)Zstatic_table_mappingrrrr)r r r Ú_build_static_table_mappingÝs r;) Ú collectionsrÚloggingÚ exceptionsrÚ getLoggerr4r1r r r;r%r r r r Ús   D