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The parsing methods defined in this module implement various email related parsing rules. Principal among them is RFC 5322, which is the followon to RFC 2822 and primarily a clarification of the former. It also implements RFC 2047 encoded word decoding. RFC 5322 goes to considerable trouble to maintain backward compatibility with RFC 822 in the parse phase, while cleaning up the structure on the generation phase. This parser supports correct RFC 5322 generation by tagging white space as folding white space only when folding is allowed in the non-obsolete rule sets. Actually, the parser is even more generous when accepting input than RFC 5322 mandates, following the spirit of Postel's Law, which RFC 5322 encourages. Where possible deviations from the standard are annotated on the 'defects' attribute of tokens that deviate. The general structure of the parser follows RFC 5322, and uses its terminology where there is a direct correspondence. Where the implementation requires a somewhat different structure than that used by the formal grammar, new terms that mimic the closest existing terms are used. Thus, it really helps to have a copy of RFC 5322 handy when studying this code. Input to the parser is a string that has already been unfolded according to RFC 5322 rules. According to the RFC this unfolding is the very first step, and this parser leaves the unfolding step to a higher level message parser, which will have already detected the line breaks that need unfolding while determining the beginning and end of each header. The output of the parser is a TokenList object, which is a list subclass. A TokenList is a recursive data structure. The terminal nodes of the structure are Terminal objects, which are subclasses of str. These do not correspond directly to terminal objects in the formal grammar, but are instead more practical higher level combinations of true terminals. All TokenList and Terminal objects have a 'value' attribute, which produces the semantically meaningful value of that part of the parse subtree. The value of all whitespace tokens (no matter how many sub-tokens they may contain) is a single space, as per the RFC rules. This includes 'CFWS', which is herein included in the general class of whitespace tokens. There is one exception to the rule that whitespace tokens are collapsed into single spaces in values: in the value of a 'bare-quoted-string' (a quoted-string with no leading or trailing whitespace), any whitespace that appeared between the quotation marks is preserved in the returned value. Note that in all Terminal strings quoted pairs are turned into their unquoted values. All TokenList and Terminal objects also have a string value, which attempts to be a "canonical" representation of the RFC-compliant form of the substring that produced the parsed subtree, including minimal use of quoted pair quoting. Whitespace runs are not collapsed. Comment tokens also have a 'content' attribute providing the string found between the parens (including any nested comments) with whitespace preserved. All TokenList and Terminal objects have a 'defects' attribute which is a possibly empty list all of the defects found while creating the token. Defects may appear on any token in the tree, and a composite list of all defects in the subtree is available through the 'all_defects' attribute of any node. (For Terminal notes x.defects == x.all_defects.) Each object in a parse tree is called a 'token', and each has a 'token_type' attribute that gives the name from the RFC 5322 grammar that it represents. Not all RFC 5322 nodes are produced, and there is one non-RFC 5322 node that may be produced: 'ptext'. A 'ptext' is a string of printable ascii characters. It is returned in place of lists of (ctext/quoted-pair) and (qtext/quoted-pair). 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/opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu local_partw s u AddrSpec.local_partc C s! t | � d k r d S| d j S( Ni i i����( u lenu Noneu domain( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu domain{ s u AddrSpec.domainc C sJ t | � d k r | d j S| d j j � | d j | d j j � S( Ni i i i ( u lenu valueu rstripu lstrip( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value� s u AddrSpec.valuec C sh t | j � } t | � t | t � k r= t | j � } n | j } | j d k rd | d | j S| S( Nu @( u setu local_partu lenu DOT_ATOM_ENDSu quote_stringu domainu None( u selfu namesetu lp( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu addr_spec� s u AddrSpec.addr_specN( u __name__u __module__u __qualname__u token_typeu propertyu local_partu domainu valueu addr_spec( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu AddrSpecs s u AddrSpecc B s | Ee Z d Z d Z d S( u ObsLocalPartu obs-local-partN( u __name__u __module__u __qualname__u token_type( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ObsLocalPart� s u ObsLocalPartc sD | Ee Z d Z d Z e d d � � Z e � f d d � � Z � S( u DisplayNameu display-namec C s� t | � } | d j d k r/ | j d � n8 | d d j d k rg t | d d d � � | d <n | d j d k r� | j � n8 | d d j d k r� t | d d d � � | d <n | j S( Ni u cfwsi i����i����i����i����i����i����( u TokenListu token_typeu popu value( u selfu res( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu display_name� s ! !u DisplayName.display_namec s� d } | j r d } n) x& | D] } | j d k r d } q q W| r� d } } | d j d k s{ | d d j d k r� d } n | d j d k s� | d d j d k r� d } n | t | j � | St � j Sd S( Nu quoted-stringu i u cfwsu i FTi����i����i����( u Falseu defectsu Trueu token_typeu quote_stringu display_nameu superu value( u selfu quoteu xu preu post( u __class__( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value� s * * u DisplayName.value( u __name__u __module__u __qualname__u token_typeu propertyu display_nameu value( u __locals__( ( u __class__u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu DisplayName� s u DisplayNamec B s> | Ee Z d Z d Z e d d � � Z e d d � � Z d S( u LocalPartu local-partc C s- | d j d k r | d j S| d j Sd S( Ni u quoted-string( u token_typeu quoted_valueu value( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value� s u LocalPart.valuec C s t g } t } d } x� | d t g D]� } | j d k rB q' n | r� | j d k r� | d j d k r� t | d d � � | d <n t | t � } | r� | j d k r� | d j d k r� | j t | d d � � � n | j | � | d } | } q' Wt | d d � � } | j S( Ni u cfwsu doti Fi����i����i����i����i����( u DOTu Falseu token_typeu TokenListu isinstanceu appendu value( u selfu resu lastu last_is_tlu toku is_tl( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu local_part� s$ u LocalPart.local_partN( u __name__u __module__u __qualname__u token_typeu propertyu valueu local_part( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu LocalPart� s u LocalPartc sD | Ee Z d Z d Z e � f d d � � Z e d d � � Z � S( u DomainLiteralu domain-literalc s d j t � j j � � S( Nu ( u joinu superu valueu split( u self( u __class__( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu domain� s u DomainLiteral.domainc C s+ x$ | D] } | j d k r | j Sq Wd S( Nu ptext( u token_typeu value( u selfu x( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ip� s u DomainLiteral.ip( u __name__u __module__u __qualname__u token_typeu propertyu domainu ip( u __locals__( ( u __class__u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu DomainLiteral� s u DomainLiteralc B s& | Ee Z d Z d Z d Z d Z d S( u MIMEVersionu mime-versionN( u __name__u __module__u __qualname__u token_typeu Noneu majoru minor( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu MIMEVersion� s u MIMEVersionc B sP | Ee Z d Z d Z d Z d Z d Z e d d � � Z e d d � � Z d S( u Parameteru parameteru us-asciic C s | j r | d j Sd S( Ni i ( u sectionedu number( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu section_number� s u Parameter.section_numberc C s� x� | D]x } | j d k r# | j S| j d k r xJ | D]? } | j d k r9 x' | D] } | j d k rU | j SqU Wq9 q9 Wq q Wd S( Nu valueu quoted-stringu bare-quoted-stringu ( u token_typeu stripped_value( u selfu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu param_value s u Parameter.param_valueNF( u __name__u __module__u __qualname__u token_typeu Falseu sectionedu extendedu charsetu propertyu section_numberu param_value( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Parameter� s u Parameterc B s | Ee Z d Z d Z d S( u InvalidParameteru invalid-parameterN( u __name__u __module__u __qualname__u token_type( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu InvalidParameter s u InvalidParameterc B s, | Ee Z d Z d Z e d d � � Z d S( u Attributeu attributec C s. x' | D] } | j j d � r | j Sq Wd S( Nu attrtext( u token_typeu endswithu value( u selfu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu stripped_value s u Attribute.stripped_valueN( u __name__u __module__u __qualname__u token_typeu propertyu stripped_value( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Attribute s u Attributec B s | Ee Z d Z d Z d Z d S( u Sectionu sectionN( u __name__u __module__u __qualname__u token_typeu Noneu number( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Section# s u Sectionc B s, | Ee Z d Z d Z e d d � � Z d S( u Valueu valuec C sF | d } | j d k r& | d } n | j j d � r? | j S| j S( Ni u cfwsi u quoted-stringu attributeu extended-attribute( u quoted-stringu attributeu extended-attribute( u token_typeu endswithu stripped_valueu value( u selfu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu stripped_value- s u Value.stripped_valueN( u __name__u __module__u __qualname__u token_typeu propertyu stripped_value( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Value) s u Valuec B s8 | Ee Z d Z d Z e d d � � Z d d � Z d S( u MimeParametersu mime-parametersc c s t � } x� | D]} } | j j d � s. q n | d j d k rG q n | d j j � } | | k rs g | | <n | | j | j | f � q Wxl| j � D]^\ } } t | � } g } | d d j } xt | � D]\ } \ } } | | k r| j j t j d � � n | j } | j r�y t j j | � } Wn* t k rht j j | d d �} Yq�Xy | j | d � } Wn$ t k r�| j d d � } Yn Xt j | � r�| j j t j � � q�n | j | � q� Wd j | � } | | f Vq� Wd S( Nu parameteri u attributei u* inconsistent multipart parameter numberingu encodingu latin-1u surrogateescapeu us-asciiu ( u OrderedDictu token_typeu endswithu valueu stripu appendu section_numberu itemsu sortedu charsetu enumerateu defectsu errorsu InvalidHeaderDefectu param_valueu extendedu urllibu parseu unquote_to_bytesu UnicodeEncodeErroru unquoteu decodeu LookupErroru utilsu _has_surrogatesu UndecodableBytesDefectu join( u selfu paramsu tokenu nameu partsu value_partsu charsetu iu section_numberu paramu value( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu params< sB u MimeParameters.paramsc C sv g } xL | j D]A \ } } | rD | j d j | t | � � � q | j | � q Wd j | � } | rr d | Sd S( Nu {}={}u ; u u ( u paramsu appendu formatu quote_stringu join( u selfu paramsu nameu value( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu __str__o s "u MimeParameters.__str__N( u __name__u __module__u __qualname__u token_typeu propertyu paramsu __str__( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu MimeParameters8 s 3u MimeParametersc B s8 | Ee Z d Z e d d � � Z e d d � � Z d S( u ParameterizedHeaderValuec C s1 x* t | � D] } | j d k r | j Sq Wi S( Nu mime-parameters( u reversedu token_typeu params( u selfu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu params| s u ParameterizedHeaderValue.paramsc C sB | r5 | d j d k r5 t | d d � | d � St | � j S( Ni u mime-parametersi����i����i����( u token_typeu TokenListu parts( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu parts� s u ParameterizedHeaderValue.partsN( u __name__u __module__u __qualname__u propertyu paramsu parts( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ParameterizedHeaderValuez s u ParameterizedHeaderValuec B s& | Ee Z d Z d Z d Z d Z d S( u ContentTypeu content-typeu textu plainN( u __name__u __module__u __qualname__u token_typeu maintypeu subtype( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ContentType� s u ContentTypec B s | Ee Z d Z d Z d Z d S( u ContentDispositionu content-dispositionN( u __name__u __module__u __qualname__u token_typeu Noneu content_disposition( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ContentDisposition� s u ContentDispositionc B s | Ee Z d Z d Z d Z d S( u ContentTransferEncodingu content-transfer-encodingu 7bitN( u __name__u __module__u __qualname__u token_typeu cte( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ContentTransferEncoding� s u ContentTransferEncodingc B s | Ee Z d Z d Z d S( u HeaderLabelu header-labelN( u __name__u __module__u __qualname__u token_type( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu HeaderLabel� s u HeaderLabelc B s& | Ee Z d Z d Z d d � Z d S( u Headeru headerc C s� | j t | j d � � � t | j d � | _ | d j d k rZ t | j d � � n d | _ | j d � } | r� t d � � n | j | � d S( Ni u cfwsu u Malformed Header token list( u appendu stru popu lenu currentu lastlenu token_typeu stickyspaceu ValueErroru _fold( u selfu foldedu rest( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _fold� s 1u Header._foldN( u __name__u __module__u __qualname__u token_typeu _fold( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Header� s u Headerc s� | Ee Z d Z � f d d � Z � f d d � Z e d d � � Z d � f d d � Z d d � Z d d � Z d d � Z e d d � � Z d d � Z d d � Z � S( u Terminalc s+ t � j | | � } | | _ g | _ | S( N( u superu __new__u token_typeu defects( u clsu valueu token_typeu self( u __class__( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu __new__� s u Terminal.__new__c s d j | j j t � j � � S( Nu {}({})( u formatu __class__u __name__u superu __repr__( u self( u __class__( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu __repr__� s u Terminal.__repr__c C s t | j � S( N( u listu defects( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu all_defects� s u Terminal.all_defectsu c sI d j | | j j | j t � j � | j s3 d n d j | j � � g S( Nu {}{}/{}({}){}u u {}( u formatu __class__u __name__u token_typeu superu __repr__u defects( u selfu indent( u __class__( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _pp� s u Terminal._ppc C sJ t | � } y | j d � | SWn" t k rE t j | | � SYn Xd S( Nu us-ascii( u stru encodeu UnicodeEncodeErroru _ew( u selfu charsetu policyu value( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu cte_encode� s u Terminal.cte_encodec C s d S( N( u None( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu pop_trailing_ws� s u Terminal.pop_trailing_wsc C s d S( N( u None( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu pop_leading_fws� s u Terminal.pop_leading_fwsc C s g S( N( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu comments� s u Terminal.commentsc C s d S( NF( u False( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu has_leading_comment� s u Terminal.has_leading_commentc C s t | � | j f S( N( u stru token_type( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu __getnewargs__� s u Terminal.__getnewargs__( u __name__u __module__u __qualname__u __new__u __repr__u propertyu all_defectsu _ppu cte_encodeu pop_trailing_wsu pop_leading_fwsu commentsu has_leading_commentu __getnewargs__( u __locals__( ( u __class__u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu Terminal� s u Terminalc B s8 | Ee Z d Z e d d � � Z d d � Z d Z d S( u WhiteSpaceTerminalc C s d S( Nu ( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value� s u WhiteSpaceTerminal.valuec C s d S( NT( u True( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu startswith_fws� s u! WhiteSpaceTerminal.startswith_fwsNT( u __name__u __module__u __qualname__u propertyu valueu startswith_fwsu Trueu has_fws( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu WhiteSpaceTerminal� s u WhiteSpaceTerminalc B sD | Ee Z d Z e d d � � Z d d � Z d Z d d � Z d S( u ValueTerminalc C s | S( N( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value� s u ValueTerminal.valuec C s d S( NF( u False( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu startswith_fws s u ValueTerminal.startswith_fwsc C s t j t | � | � S( N( u _ewu encodeu str( u selfu charset( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu as_encoded_word s u ValueTerminal.as_encoded_wordNF( u __name__u __module__u __qualname__u propertyu valueu startswith_fwsu Falseu has_fwsu as_encoded_word( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu ValueTerminal� s u ValueTerminalc B sJ | Ee Z d Z e d d � � Z e d d � � Z d d � Z d Z d S( u EWWhiteSpaceTerminalc C s d S( Nu ( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu value s u EWWhiteSpaceTerminal.valuec C s | d d � S( N( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu encoded s u EWWhiteSpaceTerminal.encodedc C s d S( Nu ( ( u self( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu __str__ s u EWWhiteSpaceTerminal.__str__NT( u __name__u __module__u __qualname__u propertyu valueu encodedu __str__u Trueu has_fws( u __locals__( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu EWWhiteSpaceTerminal s u EWWhiteSpaceTerminalu dotu ,u list-separatoru @u route-component-markeru ([{}]+)u u [^{}]+u \u \\u ]u \]u [\x00-\x20\x7F]c C s] t | � } | r. | j j t j | � � n t j | � rY | j j t j d � � n d S( u@ If input token contains ASCII non-printables, register a defect.u* Non-ASCII characters found in header tokenN( u _non_printable_finderu defectsu appendu errorsu NonPrintableDefectu utilsu _has_surrogatesu UndecodableBytesDefect( u xtextu non_printables( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _validate_xtextE s u _validate_xtextc C s� t | d � ^ } } g } d } d } x� t t | � � D]k } | | d k rq | re d } d } qq d } q: n | r� d } n | | | k r� Pn | j | | � q: W| d } d j | � d j | | d � g | � | f S( uk Scan printables/quoted-pairs until endchars and return unquoted ptext. This function turns a run of qcontent, ccontent-without-comments, or dtext-with-quoted-printables into a single string by unquoting any quoted printables. It returns the string, the remaining value, and a flag that is True iff there were any quoted printables decoded. i u \u NFT( u _wsp_splitteru Falseu rangeu lenu Trueu appendu join( u valueu endcharsu fragmentu remainderu vcharsu escapeu had_qpu pos( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _get_ptext_to_endcharsO s$ u _get_ptext_to_endcharsc C s? | j � } t | d t | � t | � � d � } | | f S( u� FWS = 1*WSP This isn't the RFC definition. We're using fws to represent tokens where folding can be done, but when we are parsing the *un*folding has already been done so we don't need to watch out for CRLF. Nu fws( u lstripu WhiteSpaceTerminalu len( u valueu newvalueu fws( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_fwsm s )u get_fwsc C sK t � } | j d � s3 t j d j | � � � n | d d � j d d � ^ } } | | d d � k r� t j d j | � � � n d j | � } t | � d k r� | d t k r� | d t k r� | j d d � ^ } } | d | } n t | j � � d k r$| j j t j d � � n | | _ d j | � } y' t j d | d � \ } } } } Wn- t k r�t j d j | j � � � Yn X| | _ | | _ | j j | � x� | r@| d t k r�t | � \ } } | j | � q�n t | d � ^ } } t | d � } t | � | j | � d j | � } q�W| | f S( uE encoded-word = "=?" charset "?" encoding "?" encoded-text "?=" u =?u" expected encoded word but found {}i Nu ?=i u i u whitespace inside encoded wordu! encoded word format invalid: '{}'u vtext( u EncodedWordu startswithu errorsu HeaderParseErroru formatu splitu joinu lenu hexdigitsu defectsu appendu InvalidHeaderDefectu cteu _ewu decodeu ValueErroru charsetu langu extendu WSPu get_fwsu _wsp_splitteru ValueTerminalu _validate_xtext( u valueu ewu toku remainderu remstru restu textu charsetu langu defectsu tokenu charsu vtext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_encoded_wordy sH "2 ' u get_encoded_wordc C s� t � } xq| r|| d t k rG t | � \ } } | j | � q n | j d � r/y t | � \ } } Wn t j k r� Yq/Xd } t | � d k r� | d j d k r� | j j t j d � � d } q� n | r t | � d k r | d j d k r t | d d � | d <q n | j | � q n t | d � ^ } } t | d � } t | � | j | � d j | � } q W| S( uO unstructured = (*([FWS] vchar) *WSP) / obs-unstruct obs-unstruct = *((*LF *CR *(obs-utext) *LF *CR)) / FWS) obs-utext = %d0 / obs-NO-WS-CTL / LF / CR obs-NO-WS-CTL is control characters except WSP/CR/LF. So, basically, we have printable runs, plus control characters or nulls in the obsolete syntax, separated by whitespace. Since RFC 2047 uses the obsolete syntax in its specification, but requires whitespace on either side of the encoded words, I can see no reason to need to separate the non-printable-non-whitespace from the printable runs if they occur, so we parse this into xtext tokens separated by WSP tokens. Because an 'unstructured' value must by definition constitute the entire value, this 'get' routine does not return a remaining value, only the parsed TokenList. i u =?i u fwsu& missing whitespace before encoded wordi u encoded-wordu vtextu Ti����Fi����i����i����( u UnstructuredTokenListu WSPu get_fwsu appendu startswithu get_encoded_wordu errorsu HeaderParseErroru Trueu lenu token_typeu defectsu InvalidHeaderDefectu Falseu EWWhiteSpaceTerminalu _wsp_splitteru ValueTerminalu _validate_xtextu join( u valueu unstructuredu tokenu have_wsu toku remainderu vtext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_unstructured� s: u get_unstructuredc C s; t | d � \ } } } t | d � } t | � | | f S( u ctext = <printable ascii except \ ( )> This is not the RFC ctext, since we are handling nested comments in comment and unquoting quoted-pairs here. We allow anything except the '()' characters, but if we find any ASCII other than the RFC defined printable ASCII an NonPrintableDefect is added to the token's defects list. Since quoted pairs are converted to their unquoted values, what is returned is a 'ptext' token. In this case it is a WhiteSpaceTerminal, so it's value is ' '. u ()u ptext( u _get_ptext_to_endcharsu WhiteSpaceTerminalu _validate_xtext( u valueu ptextu _( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_qp_ctext� s u get_qp_ctextc C s; t | d � \ } } } t | d � } t | � | | f S( uo qcontent = qtext / quoted-pair We allow anything except the DQUOTE character, but if we find any ASCII other than the RFC defined printable ASCII an NonPrintableDefect is added to the token's defects list. Any quoted pairs are converted to their unquoted values, so what is returned is a 'ptext' token. In this case it is a ValueTerminal. u "u ptext( u _get_ptext_to_endcharsu ValueTerminalu _validate_xtext( u valueu ptextu _( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_qcontent� s u get_qcontentc C sr t | � } | s- t j d j | � � � n | j � } | t | � d � } t | d � } t | � | | f S( u� atext = <matches _atext_matcher> We allow any non-ATOM_ENDS in atext, but add an InvalidATextDefect to the token's defects list if we find non-atext characters. u expected atext but found '{}'Nu atext( u _non_atom_end_matcheru errorsu HeaderParseErroru formatu groupu lenu ValueTerminalu _validate_xtext( u valueu mu atext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_atext� s u get_atextc C sT | d d k r+ t j d j | � � � n t � } | d d � } x� | r| d d k r| d t k r� t | � \ } } n� | d d � d k r� y/ t | � \ } } | j j t j d � � Wqt j k r� t | � \ } } YqXn t | � \ } } | j | � qG W| s@| j j t j d � � | | f S| | d d � f S( u� bare-quoted-string = DQUOTE *([FWS] qcontent) [FWS] DQUOTE A quoted-string without the leading or trailing white space. Its value is the text between the quote marks, with whitespace preserved and quoted pairs decoded. i u "u expected '"' but found '{}'i Ni u =?u! encoded word inside quoted stringu" end of header inside quoted string( u errorsu HeaderParseErroru formatu BareQuotedStringu WSPu get_fwsu get_encoded_wordu defectsu appendu InvalidHeaderDefectu get_qcontent( u valueu bare_quoted_stringu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_bare_quoted_string s, u get_bare_quoted_stringc C s | r1 | d d k r1 t j d j | � � � n t � } | d d � } x� | r� | d d k r� | d t k r� t | � \ } } n7 | d d k r� t | � \ } } n t | � \ } } | j | � qM W| s� | j j t j d � � | | f S| | d d � f S( u� comment = "(" *([FWS] ccontent) [FWS] ")" ccontent = ctext / quoted-pair / comment We handle nested comments here, and quoted-pair in our qp-ctext routine. i u (u expected '(' but found '{}'i Nu )u end of header inside comment( u errorsu HeaderParseErroru formatu Commentu WSPu get_fwsu get_commentu get_qp_ctextu appendu defectsu InvalidHeaderDefect( u valueu commentu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_comment* s" u get_commentc C st t � } x^ | ri | d t k ri | d t k rG t | � \ } } n t | � \ } } | j | � q W| | f S( u, CFWS = (1*([FWS] comment) [FWS]) / FWS i ( u CFWSListu CFWS_LEADERu WSPu get_fwsu get_commentu append( u valueu cfwsu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_cfwsC s u get_cfwsc C s� t � } | rA | d t k rA t | � \ } } | j | � n t | � \ } } | j | � | r� | d t k r� t | � \ } } | j | � n | | f S( u� quoted-string = [CFWS] <bare-quoted-string> [CFWS] 'bare-quoted-string' is an intermediate class defined by this parser and not by the RFC grammar. It is the quoted string without any attached CFWS. i ( u QuotedStringu CFWS_LEADERu get_cfwsu appendu get_bare_quoted_string( u valueu quoted_stringu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_quoted_stringP s u get_quoted_stringc C s% t � } | rA | d t k rA t | � \ } } | j | � n | rr | d t k rr t j d j | � � � n | j d � r� y t | � \ } } Wq� t j k r� t | � \ } } Yq� Xn t | � \ } } | j | � | r| d t k rt | � \ } } | j | � n | | f S( uP atom = [CFWS] 1*atext [CFWS] An atom could be an rfc2047 encoded word. i u expected atom but found '{}'u =?( u Atomu CFWS_LEADERu get_cfwsu appendu ATOM_ENDSu errorsu HeaderParseErroru formatu startswithu get_encoded_wordu get_atext( u valueu atomu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_atomb s$ u get_atomc C s� t � } | s | d t k r; t j d j | � � � n xo | r� | d t k r� t | � \ } } | j | � | r> | d d k r> | j t � | d d � } q> q> W| d t k r� t j d j d | � � � n | | f S( u( dot-text = 1*atext *("." 1*atext) i u8 expected atom at a start of dot-atom-text but found '{}'u .i Nu4 expected atom at end of dot-atom-text but found '{}'i����( u DotAtomTextu ATOM_ENDSu errorsu HeaderParseErroru formatu get_atextu appendu DOT( u valueu dot_atom_textu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_dot_atom_text} s u get_dot_atom_textc C s� t � } | d t k r; t | � \ } } | j | � n | j d � r� y t | � \ } } Wq� t j k r� t | � \ } } Yq� Xn t | � \ } } | j | � | r� | d t k r� t | � \ } } | j | � n | | f S( u� dot-atom = [CFWS] dot-atom-text [CFWS] Any place we can have a dot atom, we could instead have an rfc2047 encoded word. i u =?( u DotAtomu CFWS_LEADERu get_cfwsu appendu startswithu get_encoded_wordu errorsu HeaderParseErroru get_dot_atom_text( u valueu dot_atomu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_dot_atom� s u get_dot_atomc C s� | d t k r% t | � \ } } n d } | d d k rP t | � \ } } n= | d t k r{ t j d j | � � � n t | � \ } } | d k r� | g | d d � <n | | f S( u� word = atom / quoted-string Either atom or quoted-string may start with CFWS. We have to peel off this CFWS first to determine which type of word to parse. Afterward we splice the leading CFWS, if any, into the parsed sub-token. If neither an atom or a quoted-string is found before the next special, a HeaderParseError is raised. The token returned is either an Atom or a QuotedString, as appropriate. This means the 'word' level of the formal grammar is not represented in the parse tree; this is because having that extra layer when manipulating the parse tree is more confusing than it is helpful. i u "u1 Expected 'atom' or 'quoted-string' but found '{}'N( u CFWS_LEADERu get_cfwsu Noneu get_quoted_stringu SPECIALSu errorsu HeaderParseErroru formatu get_atom( u valueu leaderu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_word� s u get_wordc C sI t � } y# t | � \ } } | j | � Wn. t j k r\ | j j t j d � � Yn Xx� | r>| d t k r>| d d k r� | j t � | j j t j d � � | d d � } q` y t | � \ } } WnV t j k r-| d t k r&t | � \ } } | j j t j d � � n � Yn X| j | � q` W| | f S( u� phrase = 1*word / obs-phrase obs-phrase = word *(word / "." / CFWS) This means a phrase can be a sequence of words, periods, and CFWS in any order as long as it starts with at least one word. If anything other than words is detected, an ObsoleteHeaderDefect is added to the token's defect list. We also accept a phrase that starts with CFWS followed by a dot; this is registered as an InvalidHeaderDefect, since it is not supported by even the obsolete grammar. u phrase does not start with wordi u .u period in 'phrase'i Nu comment found without atom( u Phraseu get_wordu appendu errorsu HeaderParseErroru defectsu InvalidHeaderDefectu PHRASE_ENDSu DOTu ObsoleteHeaderDefectu CFWS_LEADERu get_cfws( u valueu phraseu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_phrase� s. u get_phrasec C s� t � } d } | d t k r4 t | � \ } } n | sU t j d j | � � � n y t | � \ } } Wnr t j k r� y t | � \ } } WnD t j k r� | d d k r� | d t k r� � n t � } Yn XYn X| d k r| g | d d � <n | j | � | r�| d d k s5| d t k r�t t | � | � \ } } | j d k r|| j j t j d � � n | j j t j d � � | | d <n y | j j d � Wn+ t k r�| j j t j d � � Yn X| | f S( u= local-part = dot-atom / quoted-string / obs-local-part i u" expected local-part but found '{}'u \Nu invalid-obs-local-partu< local-part is not dot-atom, quoted-string, or obs-local-partu, local-part is not a dot-atom (contains CFWS)u asciiu) local-part contains non-ASCII characters)( u LocalPartu Noneu CFWS_LEADERu get_cfwsu errorsu HeaderParseErroru formatu get_dot_atomu get_wordu PHRASE_ENDSu TokenListu appendu get_obs_local_partu stru token_typeu defectsu InvalidHeaderDefectu ObsoleteHeaderDefectu valueu encodeu UnicodeEncodeErroru NonASCIILocalPartDefect( u valueu local_partu leaderu tokenu obs_local_part( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_local_part� sB & u get_local_partc C s] t � } d } x�| r�| d d k s8 | d t k r�| d d k r� | rj | j j t j d � � n | j t � d } | d d � } q n_ | d d k r� | j t | d d � � | d d � } | j j t j d � � d } q n | r'| d j d k r'| j j t j d � � n y t | � \ } } d } Wn= t j k r�| d t k rl� n t | � \ } } Yn X| j | � q W| d j d k s�| d j d k r�| d j d k r�| j j t j d � � n | d j d k s"| d j d k r>| d j d k r>| j j t j d � � n | j rSd | _ n | | f S( u' obs-local-part = word *("." word) i u \u .u invalid repeated '.'i Nu misplaced-specialu/ '\' character outside of quoted-string/ccontentu dotu missing '.' between wordsu cfwsu! Invalid leading '.' in local parti u" Invalid trailing '.' in local partu invalid-obs-local-partFTi����i����i����i����( u ObsLocalPartu Falseu PHRASE_ENDSu defectsu appendu errorsu InvalidHeaderDefectu DOTu Trueu ValueTerminalu token_typeu get_wordu HeaderParseErroru CFWS_LEADERu get_cfws( u valueu obs_local_partu last_non_ws_was_dotu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_obs_local_part sV ) u get_obs_local_partc C s] t | d � \ } } } t | d � } | rI | j j t j d � � n t | � | | f S( u dtext = <printable ascii except \ [ ]> / obs-dtext obs-dtext = obs-NO-WS-CTL / quoted-pair We allow anything except the excluded characters, but if we find any ASCII other than the RFC defined printable ASCII an NonPrintableDefect is added to the token's defects list. Quoted pairs are converted to their unquoted values, so what is returned is a ptext token, in this case a ValueTerminal. If there were quoted-printables, an ObsoleteHeaderDefect is added to the returned token's defect list. u []u ptextu( quoted printable found in domain-literal( u _get_ptext_to_endcharsu ValueTerminalu defectsu appendu errorsu ObsoleteHeaderDefectu _validate_xtext( u valueu ptextu had_qp( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_dtextD s u get_dtextc C s: | r d S| j t j d � � | j t d d � � d S( Nu" end of input inside domain-literalu ]u domain-literal-endFT( u Falseu appendu errorsu InvalidHeaderDefectu ValueTerminalu True( u valueu domain_literal( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _check_for_early_dl_endX s u _check_for_early_dl_endc C s t � } | d t k r; t | � \ } } | j | � n | sS t j d � � n | d d k r~ t j d j | � � � n | d d � } t | | � r� | | f S| j t d d � � | d t k r� t | � \ } } | j | � n t | � \ } } | j | � t | | � r'| | f S| d t k rYt | � \ } } | j | � n t | | � rr| | f S| d d k r�t j d j | � � � n | j t d d � � | d d � } | r�| d t k r�t | � \ } } | j | � n | | f S( uB domain-literal = [CFWS] "[" *([FWS] dtext) [FWS] "]" [CFWS] i u expected domain-literalu [u6 expected '[' at start of domain-literal but found '{}'i Nu domain-literal-startu ]u4 expected ']' at end of domain-literal but found '{}'u domain-literal-end( u DomainLiteralu CFWS_LEADERu get_cfwsu appendu errorsu HeaderParseErroru formatu _check_for_early_dl_endu ValueTerminalu WSPu get_fwsu get_dtext( u valueu domain_literalu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_domain_literal` sD u get_domain_literalc C s� t � } d } | d t k r4 t | � \ } } n | sU t j d j | � � � n | d d k r� t | � \ } } | d k r� | g | d d � <n | j | � | | f Sy t | � \ } } Wn' t j k r� t | � \ } } Yn X| d k r| g | d d � <n | j | � | r�| d d k r�| j j t j d � � | d j d k rx| d | d d � <n xS | r�| d d k r�| j t � t | d d � � \ } } | j | � q{Wn | | f S( u] domain = dot-atom / domain-literal / obs-domain obs-domain = atom *("." atom)) i u expected domain but found '{}'u [Nu .u( domain is not a dot-atom (contains CFWS)u dot-atomi ( u Domainu Noneu CFWS_LEADERu get_cfwsu errorsu HeaderParseErroru formatu get_domain_literalu appendu get_dot_atomu get_atomu defectsu ObsoleteHeaderDefectu token_typeu DOT( u valueu domainu leaderu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_domain� s< u get_domainc C s� t � } t | � \ } } | j | � | s? | d d k rb | j j t j d � � | | f S| j t d d � � t | d d � � \ } } | j | � | | f S( u( addr-spec = local-part "@" domain i u @u" add-spec local part with no domainu address-at-symboli N( u AddrSpecu get_local_partu appendu defectsu errorsu InvalidHeaderDefectu ValueTerminalu get_domain( u valueu addr_specu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_addr_spec� s u get_addr_specc C s, t � } x� | r� | d d k s2 | d t k r� | d t k rd t | � \ } } | j | � q | d d k r | j t � | d d � } q q W| s� | d d k r� t j d j | � � � n | j t � t | d d � � \ } } | j | � x� | r�| d d k r�| j t � | d d � } | s@Pn | d t k rrt | � \ } } | j | � n | d d k r| j t � t | d d � � \ } } | j | � qqW| s�t j d � � n | d d k rt j d j | � � � n | j t d d � � | | d d � f S( u� obs-route = obs-domain-list ":" obs-domain-list = *(CFWS / ",") "@" domain *("," [CFWS] ["@" domain]) Returns an obs-route token with the appropriate sub-tokens (that is, there is no obs-domain-list in the parse tree). i u ,i Nu @u( expected obs-route domain but found '{}'u% end of header while parsing obs-routeu :u4 expected ':' marking end of obs-route but found '{}'u end-of-obs-route-marker( u ObsRouteu CFWS_LEADERu get_cfwsu appendu ListSeparatoru errorsu HeaderParseErroru formatu RouteComponentMarkeru get_domainu ValueTerminal( u valueu obs_routeu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_obs_route� sB ) u get_obs_routec C s? t � } | d t k r; t | � \ } } | j | � n | sR | d d k rm t j d j | � � � n | j t d d � � | d d � } | d d k r� | j t d d � � | j j t j d � � | d d � } | | f Sy t | � \ } } Wn� t j k r�y/ t | � \ } } | j j t j d � � Wn- t j k rst j d j | � � � Yn X| j | � t | � \ } } Yn X| j | � | r�| d d k r�| d d � } n | j j t j d � � | j t d d � � | r5| d t k r5t | � \ } } | j | � n | | f S( u� angle-addr = [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr obs-angle-addr = [CFWS] "<" obs-route addr-spec ">" [CFWS] i u <u" expected angle-addr but found '{}'u angle-addr-starti Nu >u angle-addr-endu null addr-spec in angle-addru* obsolete route specification in angle-addru. expected addr-spec or obs-route but found '{}'u" missing trailing '>' on angle-addr( u AngleAddru CFWS_LEADERu get_cfwsu appendu errorsu HeaderParseErroru formatu ValueTerminalu defectsu InvalidHeaderDefectu get_addr_specu get_obs_routeu ObsoleteHeaderDefect( u valueu angle_addru token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_angle_addr� sJ u get_angle_addrc C sR t � } t | � \ } } | j | d d � � | j d d � | _ | | f S( u� display-name = phrase Because this is simply a name-rule, we don't return a display-name token containing a phrase, but rather a display-name token with the content of the phrase. N( u DisplayNameu get_phraseu extendu defects( u valueu display_nameu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_display_name s u get_display_namec C sJ t � } d } | d t k rU t | � \ } } | sU t j d j | � � � qU n | d d k r� | d t k r� t j d j | � � � n t | � \ } } | s� t j d j | � � � n | d k r� | g | d d d � <d } n | j | � n t | � \ } } | d k r3| g | d d � <n | j | � | | f S( u, name-addr = [display-name] angle-addr i u! expected name-addr but found '{}'u <N( u NameAddru Noneu CFWS_LEADERu get_cfwsu errorsu HeaderParseErroru formatu PHRASE_ENDSu get_display_nameu appendu get_angle_addr( u valueu name_addru leaderu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_name_addr! s0 u get_name_addrc C s� t � } y t | � \ } } Wn[ t j k r| y t | � \ } } Wn- t j k rw t j d j | � � � Yn XYn Xt d d � | j D� � r� d | _ n | j | � | | f S( u& mailbox = name-addr / addr-spec u expected mailbox but found '{}'c s s! | ] } t | t j � Vq d S( N( u isinstanceu errorsu InvalidHeaderDefect( u .0u x( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu <genexpr>N s u get_mailbox.<locals>.<genexpr>u invalid-mailbox( u Mailboxu get_name_addru errorsu HeaderParseErroru get_addr_specu formatu anyu all_defectsu token_typeu append( u valueu mailboxu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_mailbox? s u get_mailboxc C s� t � } xv | r� | d | k r� | d t k r_ | j t | d d � � | d d � } q t | � \ } } | j | � q W| | f S( u� Read everything up to one of the chars in endchars. This is outside the formal grammar. The InvalidMailbox TokenList that is returned acts like a Mailbox, but the data attributes are None. i u misplaced-speciali N( u InvalidMailboxu PHRASE_ENDSu appendu ValueTerminalu get_phrase( u valueu endcharsu invalid_mailboxu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_invalid_mailboxT s u get_invalid_mailboxc C sY t � } xC| rN| d d k rNy# t | � \ } } | j | � Wnft j k r�d } | d t k r t | � \ } } | s� | d d k r� | j | � | j j t j d � � q�t | d � \ } } | d k r� | g | d d � <n | j | � | j j t j d � � n� | d d k rL| j j t j d � � n] t | d � \ } } | d k r�| g | d d � <n | j | � | j j t j d � � Yn X| r| d d k r| d } d | _ t | d � \ } } | j | � | j j t j d � � n | r | d d k r | j t � | d d � } q q W| | f S( uJ mailbox-list = (mailbox *("," mailbox)) / obs-mbox-list obs-mbox-list = *([CFWS] ",") mailbox *("," [mailbox / CFWS]) For this routine we go outside the formal grammar in order to improve error handling. We recognize the end of the mailbox list only at the end of the value or at a ';' (the group terminator). This is so that we can turn invalid mailboxes into InvalidMailbox tokens and continue parsing any remaining valid mailboxes. We also allow all mailbox entries to be null, and this condition is handled appropriately at a higher level. i u ;u ,;u empty element in mailbox-listNu invalid mailbox in mailbox-listu ,i u invalid-mailboxi����( u MailboxListu get_mailboxu appendu errorsu HeaderParseErroru Noneu CFWS_LEADERu get_cfwsu defectsu ObsoleteHeaderDefectu get_invalid_mailboxu InvalidHeaderDefectu token_typeu extendu ListSeparator( u valueu mailbox_listu tokenu leaderu mailbox( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_mailbox_listf sN u get_mailbox_listc C sl t � } | s2 | j j t j d � � | | f Sd } | r� | d t k r� t | � \ } } | s� | j j t j d � � | j | � | | f S| d d k r� | j | � | | f Sn t | � \ } } t | j � d k r3| d k r| j | � n | j | � | j j t j d � � | | f S| d k rU| g | d d � <n | j | � | | f S( ug group-list = mailbox-list / CFWS / obs-group-list obs-group-list = 1*([CFWS] ",") [CFWS] u end of header before group-listi u end of header in group-listu ;u group-list with empty entriesN( u GroupListu defectsu appendu errorsu InvalidHeaderDefectu Noneu CFWS_LEADERu get_cfwsu get_mailbox_listu lenu all_mailboxesu extendu ObsoleteHeaderDefect( u valueu group_listu leaderu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_group_list� s8 u get_group_listc C s� t � } t | � \ } } | s2 | d d k rM t j d j | � � � n | j | � | j t d d � � | d d � } | r� | d d k r� | j t d d � � | | d d � f St | � \ } } | j | � | s| j j t j d � � n | d d k r,t j d j | � � � n | j t d d � � | d d � } | r�| d t k r�t | � \ } } | j | � n | | f S( u7 group = display-name ":" [group-list] ";" [CFWS] i u :u8 expected ':' at end of group display name but found '{}'u group-display-name-terminatori Nu ;u group-terminatoru end of header in groupu) expected ';' at end of group but found {}( u Groupu get_display_nameu errorsu HeaderParseErroru formatu appendu ValueTerminalu get_group_listu defectsu InvalidHeaderDefectu CFWS_LEADERu get_cfws( u valueu groupu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_group� s2 u get_groupc C s� t � } y t | � \ } } Wn[ t j k r| y t | � \ } } Wn- t j k rw t j d j | � � � Yn XYn X| j | � | | f S( u� address = mailbox / group Note that counter-intuitively, an address can be either a single address or a list of addresses (a group). This is why the returned Address object has a 'mailboxes' attribute which treats a single address as a list of length one. When you need to differentiate between to two cases, extract the single element, which is either a mailbox or a group token. u expected address but found '{}'( u Addressu get_groupu errorsu HeaderParseErroru get_mailboxu formatu append( u valueu addressu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_address� s u get_addressc C sk t � } xU| r`y# t | � \ } } | j | � Wn�t j k r�} zhd } | d t k r t | � \ } } | s� | d d k r� | j | � | j j t j d � � q�t | d � \ } } | d k r� | g | d d � <n | j t | g � � | j j t j d � � n� | d d k rJ| j j t j d � � nf t | d � \ } } | d k r�| g | d d � <n | j t | g � � | j j t j d � � WYd d } ~ Xn X| r.| d d k r.| d d } d | _ t | d � \ } } | j | � | j j t j d � � n | r | j t d d � � | d d � } q q W| | f S( u� address_list = (address *("," address)) / obs-addr-list obs-addr-list = *([CFWS] ",") address *("," [address / CFWS]) We depart from the formal grammar here by continuing to parse until the end of the input, assuming the input to be entirely composed of an address-list. This is always true in email parsing, and allows us to skip invalid addresses to parse additional valid ones. i u ,u" address-list entry with no contentNu invalid address in address-listu empty element in address-listi u invalid-mailboxu list-separatori����( u AddressListu get_addressu appendu errorsu HeaderParseErroru Noneu CFWS_LEADERu get_cfwsu defectsu ObsoleteHeaderDefectu get_invalid_mailboxu Addressu InvalidHeaderDefectu token_typeu extendu ValueTerminal( u valueu address_listu tokenu erru leaderu mailbox( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_address_list� sN u get_address_listc C s� t � } | s, | j j t j d � � | S| d t k r� t | � \ } } | j | � | s� | j j t j d � � q� n d } xH | r� | d d k r� | d t k r� | | d 7} | d d � } q� W| j � s| j j t j d j | � � � | j t | d � � n% t | � | _ | j t | d � � | ru| d t k rut | � \ } } | j | � n | s�| d d k r�| j d k r�| j j t j d � � n | r�| j t | d � � n | S| j t d d � � | d d � } | r8| d t k r8t | � \ } } | j | � n | sm| j d k ri| j j t j d � � n | Sd } x8 | r�| d t k r�| | d 7} | d d � } qvW| j � s�| j j t j d j | � � � | j t | d � � n% t | � | _ | j t | d � � | rR| d t k rRt | � \ } } | j | � n | r�| j j t j d � � | j t | d � � n | S( uE mime-version = [CFWS] 1*digit [CFWS] "." [CFWS] 1*digit [CFWS] u% Missing MIME version number (eg: 1.0)i u0 Expected MIME version number but found only CFWSu u .i Nu1 Expected MIME major version number but found {!r}u xtextu digitsu0 Incomplete MIME version; found only major numberu version-separatoru1 Expected MIME minor version number but found {!r}u' Excess non-CFWS text after MIME version( u MIMEVersionu defectsu appendu errorsu HeaderMissingRequiredValueu CFWS_LEADERu get_cfwsu isdigitu InvalidHeaderDefectu formatu ValueTerminalu intu majoru Noneu minor( u valueu mime_versionu tokenu digits( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu parse_mime_version= sv ) u parse_mime_versionc C s� t � } xv | r� | d d k r� | d t k r_ | j t | d d � � | d d � } q t | � \ } } | j | � q W| | f S( u� Read everything up to the next ';'. This is outside the formal grammar. The InvalidParameter TokenList that is returned acts like a Parameter, but the data attributes are None. i u ;u misplaced-speciali N( u InvalidParameteru PHRASE_ENDSu appendu ValueTerminalu get_phrase( u valueu invalid_parameteru token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_invalid_parameter� s u get_invalid_parameterc C sr t | � } | s- t j d j | � � � n | j � } | t | � d � } t | d � } t | � | | f S( u8 ttext = <matches _ttext_matcher> We allow any non-TOKEN_ENDS in ttext, but add defects to the token's defects list if we find non-ttext characters. We also register defects for *any* non-printables even though the RFC doesn't exclude all of them, because we follow the spirit of RFC 5322. u expected ttext but found '{}'Nu ttext( u _non_token_end_matcheru errorsu HeaderParseErroru formatu groupu lenu ValueTerminalu _validate_xtext( u valueu mu ttext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_ttext� s u get_ttextc C s� t � } | rA | d t k rA t | � \ } } | j | � n | rr | d t k rr t j d j | � � � n t | � \ } } | j | � | r� | d t k r� t | � \ } } | j | � n | | f S( u� token = [CFWS] 1*ttext [CFWS] The RFC equivalent of ttext is any US-ASCII chars except space, ctls, or tspecials. We also exclude tabs even though the RFC doesn't. The RFC implies the CFWS but is not explicit about it in the BNF. i u expected token but found '{}'( u Tokenu CFWS_LEADERu get_cfwsu appendu TOKEN_ENDSu errorsu HeaderParseErroru formatu get_ttext( u valueu mtokenu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_token� s u get_tokenc C sr t | � } | s- t j d j | � � � n | j � } | t | � d � } t | d � } t | � | | f S( uQ attrtext = 1*(any non-ATTRIBUTE_ENDS character) We allow any non-ATTRIBUTE_ENDS in attrtext, but add defects to the token's defects list if we find non-attrtext characters. We also register defects for *any* non-printables even though the RFC doesn't exclude all of them, because we follow the spirit of RFC 5322. u expected attrtext but found {!r}Nu attrtext( u _non_attribute_end_matcheru errorsu HeaderParseErroru formatu groupu lenu ValueTerminalu _validate_xtext( u valueu mu attrtext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_attrtext� s u get_attrtextc C s� t � } | rA | d t k rA t | � \ } } | j | � n | rr | d t k rr t j d j | � � � n t | � \ } } | j | � | r� | d t k r� t | � \ } } | j | � n | | f S( uH [CFWS] 1*attrtext [CFWS] This version of the BNF makes the CFWS explicit, and as usual we use a value terminal for the actual run of characters. The RFC equivalent of attrtext is the token characters, with the subtraction of '*', "'", and '%'. We include tab in the excluded set just as we do for token. i u expected token but found '{}'( u Attributeu CFWS_LEADERu get_cfwsu appendu ATTRIBUTE_ENDSu errorsu HeaderParseErroru formatu get_attrtext( u valueu attributeu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_attribute� s u get_attributec C sr t | � } | s- t j d j | � � � n | j � } | t | � d � } t | d � } t | � | | f S( u� attrtext = 1*(any non-ATTRIBUTE_ENDS character plus '%') This is a special parsing routine so that we get a value that includes % escapes as a single string (which we decode as a single string later). u) expected extended attrtext but found {!r}Nu extended-attrtext( u# _non_extended_attribute_end_matcheru errorsu HeaderParseErroru formatu groupu lenu ValueTerminalu _validate_xtext( u valueu mu attrtext( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_extended_attrtext� s u get_extended_attrtextc C s� t � } | rA | d t k rA t | � \ } } | j | � n | rr | d t k rr t j d j | � � � n t | � \ } } | j | � | r� | d t k r� t | � \ } } | j | � n | | f S( u� [CFWS] 1*extended_attrtext [CFWS] This is like the non-extended version except we allow % characters, so that we can pick up an encoded value as a single string. i u expected token but found '{}'( u Attributeu CFWS_LEADERu get_cfwsu appendu EXTENDED_ATTRIBUTE_ENDSu errorsu HeaderParseErroru formatu get_extended_attrtext( u valueu attributeu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_extended_attribute� s u get_extended_attributec C s< t � } | s | d d k r; t j d j | � � � n | j t d d � � | d d � } | sy | d j � r� t j d j | � � � n d } x8 | r� | d j � r� | | d 7} | d d � } q� W| d d k r | d k r | j j t j d � � n t | � | _ | j t | d � � | | f S( u6 '*' digits The formal BNF is more complicated because leading 0s are not allowed. We check for that and add a defect. We also assume no CFWS is allowed between the '*' and the digits, though the RFC is not crystal clear on that. The caller should already have dealt with leading CFWS. i u *u Expected section but found {}u section-markeri Nu$ Expected section number but found {}u u 0u& section numberhas an invalid leading 0u digits( u Sectionu errorsu HeaderParseErroru formatu appendu ValueTerminalu isdigitu defectsu InvalidHeaderErroru intu number( u valueu sectionu digits( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_section s$ u get_sectionc C s� t � } | s! t j d � � n d } | d t k rL t | � \ } } n | sm t j d j | � � � n | d d k r� t | � \ } } n t | � \ } } | d k r� | g | d d � <n | j | � | | f S( u quoted-string / attribute u& Expected value but found end of stringi u Expected value but found only {}u "N( u Valueu errorsu HeaderParseErroru Noneu CFWS_LEADERu get_cfwsu formatu get_quoted_stringu get_extended_attributeu append( u valueu vu leaderu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_value- s u get_valuec C s t � } t | � \ } } | j | � | s? | d d k rk | j j t j d j | � � � | | f S| d d k r y, t | � \ } } d | _ | j | � Wn t j k r� Yn X| s� t j d � � n | d d k r | j t d d � � | d d � } d | _ q n | d d k r>t j d � � n | j t d d � � | d d � } d } | r�| d t k r�t | � \ } } | j | � n d } | } | j r| r| d d k rt | � \ } } | j } d } | j d k rP| r | d d k r d } q�t | � \ } } | r�| d d k r�d } q�n0 y t | � \ } } Wn Yn X| s�d } n | r�| j j t j d � � | j | � x7 | D]/ } | j d k r�g | d d � <| } Pq�q�W| } qd } | j j t j d � � n | r0| d d k r0d } n t | � \ } } | j s[| j d k r�| sr| d d k r�| j | � | d k r�| s�t | � � | } n | | f S| j j t j d � � n | s| j j t j d � � | j | � | d k rX| | f SnF| d k rkx! | D] } | j d k r%Pq%q%W| j d k | j | � | j | _ n | d d k r�t j d j | � � � n | j t d d � � | d d � } | r2| d d k r2t | � \ } } | j | � | j | _ | s| d d k r2t j d j | � � � q2n | j t d d � � | d d � } | d k r�t � } xN | r�| d t k r�t | � \ } } n t | � \ } } | j | � qpW| } n t | � \ } } | j | � | d k r| st | � � | } n | | f S( uY attribute [section] ["*"] [CFWS] "=" value The CFWS is implied by the RFC but not made explicit in the BNF. This simplified form of the BNF from the RFC is made to conform with the RFC BNF through some extra checks. We do it this way because it makes both error recovery and working with the resulting parse tree easier. i u ;u) Parameter contains name ({}) but no valueu *u Incomplete parameteru extended-parameter-markeri Nu =u Parameter not followed by '='u parameter-separatoru "u 'u5 Quoted string value for extended parameter is invalidu bare-quoted-stringuZ Parameter marked as extended but appears to have a quoted string value that is non-encodeduc Apparent initial-extended-value but attribute was not marked as extended or was not initial sectionu( Missing required charset/lang delimitersu extended-attrtextu attrtextu= Expected RFC2231 char/lang encoding delimiter, but found {!r}u RFC2231 delimiteru; Expected RFC2231 char/lang encoding delimiter, but found {}TF( u Parameteru get_attributeu appendu defectsu errorsu InvalidHeaderDefectu formatu get_sectionu Trueu sectionedu HeaderParseErroru ValueTerminalu extendedu Noneu CFWS_LEADERu get_cfwsu get_quoted_stringu stripped_valueu Falseu section_numberu get_attrtextu get_extended_attrtextu token_typeu get_valueu AssertionErroru valueu charsetu langu Valueu WSPu get_fwsu get_qcontent( u valueu paramu tokenu leaderu remainderu appendtou qstringu inner_valueu semi_validu restu tu v( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu get_parameterC s� u get_parameterc C s� t � } x�| r�y# t | � \ } } | j | � Wnt j k rF} z� d } | d t k rx t | � \ } } n | s� | j | � | S| d d k r� | d k r� | j | � n | j j t j d � � n] t | � \ } } | r| g | d d � <n | j | � | j j t j d j | � � � WYd d } ~ Xn X| r�| d d k r�| d } d | _ t | � \ } } | j | � | j j t j d j | � � � n | r | j t d d � � | d d � } q q W| S( u! parameter *( ";" parameter ) That BNF is meant to indicate this routine should only be called after finding and handling the leading ';'. There is no corresponding rule in the formal RFC grammar, but it is more convenient for us for the set of parameters to be treated as its own TokenList. This is 'parse' routine because it consumes the reminaing value, but it would never be called to parse a full header. Instead it is called to parse everything after the non-parameter value of a specific MIME header. i u ;u parameter entry with no contentNu invalid parameter {!r}i u invalid-parameteru) parameter with invalid trailing text {!r}u parameter-separatori����( u MimeParametersu get_parameteru appendu errorsu HeaderParseErroru Noneu CFWS_LEADERu get_cfwsu defectsu InvalidHeaderDefectu get_invalid_parameteru formatu token_typeu extendu ValueTerminal( u valueu mime_parametersu tokenu erru leaderu param( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu parse_mime_parameters� sD & u parse_mime_parametersc C s� xv | rx | d d k rx | d t k rV | j t | d d � � | d d � } q t | � \ } } | j | � q W| s� d S| j t d d � � | j t | d d � � � d S( uB Do our best to find the parameters in an invalid MIME header i u ;u misplaced-speciali Nu parameter-separator( u PHRASE_ENDSu appendu ValueTerminalu get_phraseu parse_mime_parameters( u tokenlistu valueu token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu _find_mime_parameters s u _find_mime_parametersc C s> t � } d } | s2 | j j t j d � � | Sy t | � \ } } WnH t j k r� | j j t j d j | � � � t | | � | SYn X| j | � | s� | d d k r� | j j t j d � � | r� t | | � n | S| j j � j � | _ | j t d d � � | d d � } y t | � \ } } WnH t j k r�| j j t j d j | � � � t | | � | SYn X| j | � | j j � j � | _ | s�| S| d d k r| j j t j d j | � � � | ` | ` t | | � | S| j t d d � � | j t | d d � � � | S( u� maintype "/" subtype *( ";" parameter ) The maintype and substype are tokens. Theoretically they could be checked against the official IANA list + x-token, but we don't do that. u" Missing content type specificationu( Expected content maintype but found {!r}i u /u Invalid content typeu content-type-separatori Nu' Expected content subtype but found {!r}u ;u< Only parameters are valid after content type, but found {!r}u parameter-separatorF( u ContentTypeu Falseu defectsu appendu errorsu HeaderMissingRequiredValueu get_tokenu HeaderParseErroru InvalidHeaderDefectu formatu _find_mime_parametersu valueu stripu loweru maintypeu ValueTerminalu subtypeu parse_mime_parameters( u valueu ctypeu recoveru token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu parse_content_type_header sX u parse_content_type_headerc C s6 t � } | s, | j j t j d � � | Sy t | � \ } } WnH t j k r� t j j t j d j | � � � t | | � | SYn X| j | � | j j � j � | _ | s� | S| d d k r� | j j t j d j | � � � t | | � | S| j t d d � � | j t | d d � � � | S( u* disposition-type *( ";" parameter ) u Missing content dispositionu+ Expected content disposition but found {!r}i u ;uC Only parameters are valid after content disposition, but found {!r}u parameter-separatori N( u ContentDispositionu defectsu appendu errorsu HeaderMissingRequiredValueu get_tokenu HeaderParseErroru ctypeu InvalidHeaderDefectu formatu _find_mime_parametersu valueu stripu loweru content_dispositionu ValueTerminalu parse_mime_parameters( u valueu disp_headeru token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu parse_content_disposition_headerK s2 u parse_content_disposition_headerc C s1 t � } | s, | j j t j d � � | Sy t | � \ } } Wn7 t j k r{ t j j t j d j | � � � Yn& X| j | � | j j � j � | _ | s� | Sx | r,| j j t j d � � | d t k r | j t | d d � � | d d � } q� t | � \ } } | j | � q� W| S( u mechanism u! Missing content transfer encodingu1 Expected content trnasfer encoding but found {!r}u* Extra text after content transfer encodingi u misplaced-speciali N( u ContentTransferEncodingu defectsu appendu errorsu HeaderMissingRequiredValueu get_tokenu HeaderParseErroru ctypeu InvalidHeaderDefectu formatu valueu stripu loweru cteu PHRASE_ENDSu ValueTerminalu get_phrase( u valueu cte_headeru token( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu& parse_content_transfer_encoding_headeri s. u& parse_content_transfer_encoding_header(� u __doc__u reu urllibu stringu hexdigitsu collectionsu namedtupleu OrderedDictu emailu _encoded_wordsu _ewu errorsu utilsu setu WSPu CFWS_LEADERu SPECIALSu ATOM_ENDSu DOT_ATOM_ENDSu PHRASE_ENDSu TSPECIALSu TOKEN_ENDSu ASPECIALSu ATTRIBUTE_ENDSu EXTENDED_ATTRIBUTE_ENDSu quote_stringu _Foldedu listu TokenListu WhiteSpaceTokenListu UnstructuredTokenListu Phraseu Wordu CFWSListu Atomu Tokenu EncodedWordu QuotedStringu BareQuotedStringu Commentu AddressListu Addressu MailboxListu GroupListu Groupu NameAddru AngleAddru ObsRouteu Mailboxu InvalidMailboxu Domainu DotAtomu DotAtomTextu AddrSpecu ObsLocalPartu DisplayNameu LocalPartu DomainLiteralu MIMEVersionu Parameteru InvalidParameteru Attributeu Sectionu Valueu MimeParametersu ParameterizedHeaderValueu ContentTypeu ContentDispositionu ContentTransferEncodingu HeaderLabelu Headeru stru Terminalu WhiteSpaceTerminalu ValueTerminalu EWWhiteSpaceTerminalu DOTu ListSeparatoru RouteComponentMarkeru compileu formatu joinu splitu _wsp_splitteru replaceu matchu _non_atom_end_matcheru findallu _non_printable_finderu _non_token_end_matcheru _non_attribute_end_matcheru# _non_extended_attribute_end_matcheru _validate_xtextu _get_ptext_to_endcharsu get_fwsu get_encoded_wordu get_unstructuredu get_qp_ctextu get_qcontentu get_atextu get_bare_quoted_stringu get_commentu get_cfwsu get_quoted_stringu get_atomu get_dot_atom_textu get_dot_atomu get_wordu get_phraseu get_local_partu get_obs_local_partu get_dtextu _check_for_early_dl_endu get_domain_literalu get_domainu get_addr_specu get_obs_routeu get_angle_addru get_display_nameu get_name_addru get_mailboxu get_invalid_mailboxu get_mailbox_listu get_group_listu get_groupu get_addressu get_address_listu parse_mime_versionu get_invalid_parameteru get_ttextu get_tokenu get_attrtextu get_attributeu get_extended_attrtextu get_extended_attributeu get_sectionu get_valueu get_parameteru parse_mime_parametersu _find_mime_parametersu parse_content_type_headeru parse_content_disposition_headeru& parse_content_transfer_encoding_header( ( ( u? /opt/alt/python33/lib64/python3.3/email/_header_value_parser.pyu <module>D s T� J_ '# B3 $ 0 0 0 ! * 8 & ' / ' $ ) . 9 % > D � 4 9
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