Current File : //opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyc
�
�A�[c @` s� d Z d d l m Z d d l m Z d d l m Z d d l m Z m Z m Z m Z m
Z
d d d g Z d d l Z d d l
Z
d d
l m Z d d l m Z d d l m Z d d l j j j Z d d
l m Z m Z e j Z d Z d Z d Z d" Z d Z d Z! d Z" e d � Z# e d � Z$ e j% d e j& e j' Be j( B� Z) e j% d � Z* e j% d � Z+ d � Z, d d d d � Z. d e/ f d � � YZ0 d e/ f d � � YZ1 d e2 f d! � � YZ3 d S(# u+ Header encoding and decoding functionality.i ( t unicode_literals( t division( t absolute_import( t bytest ranget strt supert zipu Headeru
decode_headeru make_headerN( t email( t
base64mime( t HeaderParseError( t _max_appendt
header_decodeu
u t i u iN u u us-asciiu utf-8ui
=\? # literal =?
(?P<charset>[^?]*?) # non-greedy up to the next ? is the charset
\? # literal ?
(?P<encoding>[qb]) # either a "q" or a "b", case insensitive
\? # literal ?
(?P<encoded>.*?) # non-greedy up to the next ?= is the encoded string
\?= # literal ?=
u [\041-\176]+:$u
\n[^ \t]+:c C` s� t | d � rM g | j D]0 \ } } t j | t | � � t | � f ^ q St j | � si | d f g Sg } x� | j � D]� } t j | � } t
} x� | rD| j d � } | r� | j � } t
} n | r� | j | d d f � n | r� | j d � j � } | j d � j � } | j d � } | j | | | f � q� q� Wq| Wd d l }
g } xn t | � D]` \ } }
| d k rh|
d rh| | d d rh| | d d j � rh| j | d � qhqhWx t | � D]
} | | =q�Wg } x� | D]� \ } } } | d k r(| j | | f � q�| d k rVt | � } | j | | f � q�| d k r�t | � d } | r�| d d | 7} n y t j | � } Wn t j k
r�t d
� � q�X| j | | f � q�t d | � � q�Wg } d } } x� | D]� \ } } t | t � r1t | d � } n | d k rL| } | } q| | k rz| j | | f � | } | } q| d k r�| t | 7} q| | 7} qW| j | | f � | S(
u; Decode a message header value without converting charset.
Returns a list of (string, charset) pairs containing each of the decoded
parts of the header. Charset is None for non-encoded parts of the header,
otherwise a lower-case string containing the name of the character set
specified in the encoded string.
header may be a string that may or may not contain RFC2047 encoded words,
or it may be a Header object.
An email.errors.HeaderParseError may be raised when certain decoding error
occurs (e.g. a base64 decoding exception).
u _chunksi Ni i u qu bi u ===u Base64 decoding erroru Unexpected encoding: u raw-unicode-escape( t hasattrt _chunkst _charsett _encodeR t ecret searcht Nonet
splitlinest splitt Truet popt lstript Falset appendt lowert syst enumeratet isspacet reversedR t lenR t decodet binasciit ErrorR
t AssertionErrort
isinstanceR t BSPACE( t headert stringt charsett wordst linet partst firstt unencodedt encodingt encodedR t droplistt nt wt dt
decoded_wordst encoded_stringt wordt paderrt collapsedt last_wordt last_charset( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt
decode_header> s| ;
! @
c C` sq t d | d | d | � } xO | D]G \ } } | d k rY t | t � rY t | � } n | j | | � q" W| S( u� Create a Header from a sequence of pairs as returned by decode_header()
decode_header() takes a header value string and returns a sequence of
pairs of the format (decoded_string, charset) where charset is the string
name of the character set.
This function takes one of those sequence of pairs and returns a Header
instance. Optional maxlinelen, header_name, and continuation_ws are as in
the Header constructor.
t
maxlinelent header_namet continuation_wsN( t HeaderR R& t CharsetR ( t decoded_seqR> R? R@ t ht sR* ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt make_header� s RA c B` sq e Z d d d d d d d � Z d � Z d � Z d � Z d d d � Z d � Z d d d d
� Z d � Z
RS(
u u strictc C` s� | d k r t } n t | t � s3 t | � } n | | _ | | _ g | _ | d k rp | j | | | � n | d k r� t } n | | _ | d k r� d | _
n t | � d | _
d S( uD Create a MIME-compliant header that can contain many character sets.
Optional s is the initial header value. If None, the initial header
value is not set. You can later append to the header with .append()
method calls. s may be a byte string or a Unicode string, but see the
.append() documentation for semantics.
Optional charset serves two purposes: it has the same meaning as the
charset argument to the .append() method. It also sets the default
character set for all subsequent .append() calls that omit the charset
argument. If charset is not provided in the constructor, the us-ascii
charset is used both as s's initial charset and as the default for
subsequent .append() calls.
The maximum line length can be specified explicitly via maxlinelen. For
splitting the first line to a shorter value (to account for the field
header which isn't included in s, e.g. `Subject') pass in the name of
the field in header_name. The default maxlinelen is 78 as recommended
by RFC 2822.
continuation_ws must be RFC 2822 compliant folding whitespace (usually
either a space or a hard tab) which will be prepended to continuation
lines.
errors is passed through to the .append() call.
i i N( R t USASCIIR& RB R t _continuation_wsR R t
MAXLINELENt _maxlinelent
_headerlenR! ( t selfRE R* R> R? R@ t errors( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt __init__� s c C` s( | j � g } d } d } x� | j D]� \ } } | } | t j k rn | j d d � } | j d d � } n | r� | o� | j | d � } | d k r� | d k r� | r� | j t � d } q� q� | d
k r� | r� | j t � q� n | o| j | d � } | } | j | � q& Wt
j | � S( u& Return the string value of the header.u asciiu surrogateescapeu replacei u us-asciii����N( Nu us-ascii( Nu us-ascii( Nu us-ascii( t
_normalizeR R R t UNKNOWN8BITt encodeR" t _nonctextR t SPACEt EMPTYSTRINGt join( RL t uchunkst lastcst lastspaceR) R* t nextcst original_bytest hasspace( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt __str__� s*
c C` s | t | � k S( N( R ( RL t other( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt __eq__ s c C` s | | k S( N( ( RL R] ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt __ne__ s c C` s | d k r | j } n t | t � s6 t | � } n t | t � s� | j pQ d } | t j k rx | j d d � } q� | j | | � } n | j p� d } | t j k r� y | j | | � Wq� t
k
r� | d k r� � n t } q� Xn | j j
| | f � d S( u. Append a string to the MIME header.
Optional charset, if given, should be a Charset instance or the name
of a character set (which will be converted to a Charset instance). A
value of None (the default) means that the charset given in the
constructor is used.
s may be a byte string or a Unicode string. If it is a byte string
(i.e. isinstance(s, str) is false), then charset is the encoding of
that byte string, and a UnicodeError will be raised if the string
cannot be decoded with that charset. If s is a Unicode string, then
charset is a hint specifying the character set of the characters in
the string. In either case, when producing an RFC 2822 compliant
header using RFC 2047 rules, the string will be encoded using the
output codec of the charset. If the string cannot be encoded to the
output codec, a UnicodeError will be raised.
Optional `errors' is passed as the errors argument to the decode
call if s is a byte string.
u us-asciiu surrogateescapeN( R R R& RB R t input_codecRP R" t output_codecRQ t UnicodeEncodeErrort UTF8R R ( RL RE R* RM t
input_charsett output_charset( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR s$
c C` s | j � p | d k S( u= True if string s is not a ctext character of RFC822.
u (u )u \( u (u )u \( R ( RL RE ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRR 7 s u ;, u
c C` s\ | j � | d k r" | j } n | d k r7 d } n t | j | | j | � } d } d } } x�| j D]�\ } } | d k r� | o� | j | d � } d d l }
| d
k r� | s� | d k r� | j � q� q� | d k r� | r� | j � q� n | o| j | d � } | } t
} | j � } | rL| j d | d | � n | j d d | � x� | d D]{ } | j
� | j d k r�| j | j d | j � | � qj| j � }
| t | � t |
� } | j | |
| � qjWt | � d k rl | j
� ql ql W| j r"| j � n | j | � } t j | � rXt d j | � � � n | S(
u� Encode a message header into an RFC-compliant format.
There are many issues involved in converting a given string for use in
an email header. Only certain character sets are readable in most
email clients, and as header strings can only contain a subset of
7-bit ASCII, care must be taken to properly convert and encode (with
Base64 or quoted-printable) header strings. In addition, there is a
75-character length limit on any given encoded header field, so
line-wrapping must be performed, even with double-byte character sets.
Optional maxlinelen specifies the maximum length of each generated
line, exclusive of the linesep string. Individual lines may be longer
than maxlinelen if a folding point cannot be found. The first line
will be shorter by the length of the header name plus ": " if a header
name was specified at Header construction time. The default value for
maxlinelen is determined at header construction time.
Optional splitchars is a string containing characters which should be
given extra weight by the splitting algorithm during normal header
wrapping. This is in very rough support of RFC 2822's `higher level
syntactic breaks': split points preceded by a splitchar are preferred
during line splitting, with the characters preferred in the order in
which they appear in the string. Space and tab may be included in the
string to indicate whether preference should be given to one over the
other as a split point when other split chars do not appear in the line
being split. Splitchars does not affect RFC 2047 encoded lines.
Optional linesep is a string to be used to separate the lines of
the value. The default value is the most useful for typical
Python applications, but it can be set to \r\n to produce RFC-compliant
line separators when needed.
i i@B Nu us-asciii����u i u u8 header value appears to contain an embedded header: {!r}( Nu us-ascii( Nu us-ascii( Nu us-ascii( RO R RJ t _ValueFormatterRK RH R RR R t add_transitionR R t feedt newlinet header_encodingR R! t _strt _embeded_headerR R
t format( RL t
splitcharsR> t linesept formatterRW R[ RX R) R* R t linesR, t slinet fwst value( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRQ < sT !
c C` s� g } d } g } xm | j D]b \ } } | | k rD | j | � q | d k ro | j t j | � | f � n | g } | } q W| r� | j t j | � | f � n | | _ d S( N( R R R RS RU ( RL t chunksR< t
last_chunkR) R* ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRO � s
N( t __name__t
__module__R RN R\ R^ R_ R RR RQ RO ( ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRA � s - + QRf c B` sY e Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
RS( c C` sF | | _ | | _ t | � | _ | | _ g | _ t | � | _ d S( N( t _maxlenRH R! t _continuation_ws_lent _splitcharst _linest _Accumulatort
_current_line( RL t headerlent maxlenR@ Rn ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRN � s c C` s | j � | j | j � S( N( Ri RU R| ( RL Ro ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRk � s
c C` s
| j t � S( N( Rk t NL( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR\ � s c C` s� | j j � } | d k r. | j j | � n t | j � d k r� | j j � rq | j d c t | j � 7<q� | j j t | j � � n | j j � d S( Nu u i i����( u u ( R~ R t pushR! t is_onlywsR| R R t reset( RL t end_of_line( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRi � s c C` s | j j d d � d S( Nu u ( R~ R� ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRg � s c C` s� | j d k r) | j | | | j � d S| j | | j � � } y | j d � } Wn t k
rh d SX| d k r� | j | | � n y | j � } Wn t k
r� d SX| j � | j
j | j | � x% | D] } | j
j | j | � q� Wd S( Ni ( Rj R t _ascii_splitR{ t header_encode_linest _maxlengthsR t
IndexErrort
_append_chunkRi R~ R� RH R| R ( RL Rs R) R* t
encoded_linest
first_linet last_lineR, ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRh � s$
c c` s5 | j t | j � Vx t r0 | j | j Vq Wd S( N( Ry R! R~ R Rz ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� � s c C` s� t j d t d | | � } | d r8 d g | d *n
| j d � x7 t t | � g d � D] \ } } | j | | � q_ Wd S( Nu ([u ]+)i u i ( t reR t FWSR R t iterR� ( RL Rs R) Rn R- t part( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� � s
&c C` sr | j j | | � t | j � | j k rnx| j D]� } x� t | j j � d d d � D]o } | j � r� | j | d } | r� | d | k r� Pq� n | j | d d } | r[ | d | k r[ Pq[ q[ Wq5 Pq5 W| j j � \ } } | j j d k r| j
� | sd } qn | j j | | � d S| j j | � } | j j
t | j � � | j j | � n d S( Ni i i����u ( R~ R� R! Ry R{ R t
part_countR R t
_initial_sizeRi t pop_fromR| R R R� ( RL Rs R) t cht it prevpartR� t remainder( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� � s. &
( Rw Rx RN Rk R\ Ri Rg Rh R� R� R� ( ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRf � s % R} c B` sb e Z d d � Z d � Z d d � Z d � Z d � Z d � Z d
d � Z d � Z
d � Z RS( i c C` s | | _ t � j � d S( N( R� R RN ( RL t initial_size( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyRN " s c C` s | j | | f � d S( N( R ( RL Rs R) ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� & s c C` s | | } g | | )| S( N( ( RL R� t popped( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� ) s
c C` s# | j � d k r d St � j � S( Ni u ( u u ( R� R R ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR . s c C` s t d � | D� | j � S( Nc s` s+ | ]! \ } } t | � t | � Vq d S( N( R! ( t .0Rs R� ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pys <genexpr>4 s ( t sumR� ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt __len__3 s c C` s t j d � | D� � S( Nc s` s* | ] \ } } t j | | f � Vq d S( N( RT RU ( R� Rs R� ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pys <genexpr>8 s ( RT RU ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR\ 7 s c C` s) | d k r g } n | | (d | _ d S( Ni ( R R� ( RL t startval( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� ; s c C` s& | j d k o% | p% t | � j � S( Ni ( R� R R ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� A s c C` s
t � j � S( N( R R� ( RL ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR� D s N( Rw Rx RN R� R� R R� R\ R R� R� R� ( ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyR} s u (4 t __doc__t
__future__R R R t future.builtinsR R R R R t __all__R� R# t future.backportsR t future.backports.emailR t future.backports.email.errorsR
t future.backports.email.charsett backportsR* R t! future.backports.email.quoprimimeR R RB R� RS R' t SPACE8RT RI R� RG Rc t compilet VERBOSEt
IGNORECASEt MULTILINER t fcreRl R= R RF t objectRA Rf t listR} ( ( ( sN /opt/alt/python27/lib/python2.7/site-packages/future/backports/email/header.pyt <module> sD ( _ ��
Mini Shell