FaY@sdZddgZddlZddlmZddlmZddlmZddlm Z dd l m Z ej d Z ej d Zej d Zej d Zej d ZdZdZeZGdddeZGdddZGdddeZdS)aFeedParser - An email feed parser. The feed parser implements an interface for incrementally parsing an email message, line by line. This has advantages for certain applications, such as those reading email messages off a socket. FeedParser.feed() is the primary interface for pushing new data into the parser. It returns when there's nothing more it can do with the available data. When you have no more data to push into the parser, call .close(). This completes the parsing and returns the root message object. The other advantage of this parser is that it will never raise a parsing exception. Instead, when it finds something unexpected, it adds a 'defect' to the current message. Defects are just instances that live on the message object's .defects attribute. FeedParserBytesFeedParserN)errors)message)compat32)deque)StringIOz | | z( | | )z ( | | )\Zz%^(From |[\041-\071\073-\176]*:|[\t ]) c@seZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ dS)BufferedSubFileakA file-ish object that can have new data loaded into it. You can also push and pop line-matching predicates onto a stack. When the current predicate matches the current line, a false EOF response (i.e. empty string) is returned instead. This lets the parser adhere to a simple abstraction -- it parses until EOF closes the current message. cCs4tdd|_t|_g|_d|_dS)Nnewliner F)r_partialr_lines _eofstack_closed)selfr&/usr/lib/python3.5/email/feedparser.py__init__6s  zBufferedSubFile.__init__cCs|jj|dS)N)rappend)rZpredrrrpush_eof_matcherAsz BufferedSubFile.push_eof_matchercCs |jjS)N)rpop)rrrrpop_eof_matcherDszBufferedSubFile.pop_eof_matchercCsP|jjd|j|jj|jjd|jjd|_dS)NrT)r seek pushlines readlinestruncater)rrrrcloseGs  zBufferedSubFile.closecCsg|js|jrdStS|jj}x7t|jD]&}||r9|jj|dSq9W|S)Nr )rr NeedMoreDatapopleftreversedr appendleft)rlineZateofrrrreadlineOs   zBufferedSubFile.readlinecCs&|tk st|jj|dS)N)rAssertionErrorrr!)rr"rrr unreadlineaszBufferedSubFile.unreadlinecCs|jj|d|kr,d|kr,dS|jjd|jj}|jjd|jj|djds|jj|j|j|dS)z$Push some new data into this object.r  Nr)r writerrrendswithrr)rdatapartsrrrpushfs zBufferedSubFile.pushcCs|jj|dS)N)rextend)rlinesrrrr{szBufferedSubFile.pushlinescCs|S)Nr)rrrr__iter__~szBufferedSubFile.__iter__cCs"|j}|dkrt|S)Nr )r# StopIteration)rr"rrr__next__s  zBufferedSubFile.__next__N)__name__ __module__ __qualname____doc__rrrrr#r%r-rr0r2rrrrr .s         r c@seZdZdZddeddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ dS)rzA feed-style parser of email.Npolicyc Cs||_d|_|dkrK|jtkr<tj|_qtj|_n;||_y|d|jWntk rd|_YnXt|_ g|_ |j j |_ d|_d|_d|_dS)a_factory is called with no arguments to create a new message obj The policy keyword specifies a policy object that controls a number of aspects of the parser's operation. The default policy maintains backward compatibility. FNr7T)r7_old_style_factoryrrZMessage_factoryZ EmailMessage TypeErrorr _input _msgstack _parsegenr2_parse_cur_last _headersonly)rr9r7rrrrs"         zFeedParser.__init__cCs d|_dS)NT)rA)rrrr_set_headersonlyszFeedParser._set_headersonlycCs|jj||jdS)zPush more data into the parser.N)r;r- _call_parse)rr+rrrfeedszFeedParser.feedc Cs'y|jWntk r"YnXdS)N)r>r1)rrrrrCs zFeedParser._call_parsecCsu|jj|j|j}|j s3t|jdkrq|j rqtj }|j j |||S)zz4)(?P--)?(?P[ \t]*)(?P\r\n|\r|\n)?$TFendlinesepr'r)rPrOrQr(r()/rMr;rheaderREmatchNLCRErZ MissingHeaderBodySeparatorDefectr7rHr?r%r_parse_headersrAr#Z set_payload EMPTYSTRINGjoinrKrr=rFrrGZ get_boundaryZNoBoundaryInMultipartDefectgetlowerZ-InvalidMultipartContentTransferEncodingDefectrecompileescapegroup NLCRE_eolsearchlenpreambler@epilogueZ_payload isinstancestrr$ZStartBoundaryNotFoundDefectZCloseBoundaryNotFoundDefect NLCRE_bol)rZheadersr"rJr/rNrLboundaryZ separatorZ boundaryreZcapturing_preamblercrSZclose_boundary_seenmoZlastlineZeolmordrRZpayload firstlineZbolmorrrr=sh                         $                 # zFeedParser._parsegenc Csd}g}xt|D]\}}|ddkrs|sctj|}|jj|j|q|j|q|r|jj|jj|dg}}|j drW|dkrt j |}|r|dt |j d }|jj|qnO|t |dkr2|jj|dStj|}|jjj|q|jd}|dkrtjd}|jjj|q|dkstd|d|}|g}qW|r|jj|jj|dS) Nr rz zFrom r':zMissing header name.z3_parse_headers fed line with no : and no leading WS) enumeraterZ#FirstHeaderLineIsContinuationDefectr7rHr?rZset_rawZheader_source_parse startswithr`rarbr_Z set_unixfromr;r%ZMisplacedEnvelopeHeaderDefectZdefectsfindZInvalidHeaderDefectr$) rr/Z lastheaderZ lastvaluelinenor"rJriirrrrWsH      zFeedParser._parse_headers)r3r4r5r6rrrBrDrCrrMrFr=rWrrrrrs !     cs(eZdZdZfddZS)rz(Like FeedParser, but feed accepts bytes.cs tj|jdddS)Nasciisurrogateescape)superrDdecode)rr+) __class__rrrDszBytesFeedParser.feed)r3r4r5r6rDrr)rurrs )r6__all__r\ZemailrrZemail._policybaser collectionsriorr]rVrgr`Z NLCRE_crackrTrXNLobjectrr rrrrrrs&   [