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z_singlefileMailbox.flushc C s d S)z,Called before writing the mailbox to file f.Nr )r r� r r r r� � s z$_singlefileMailbox._pre_mailbox_hookc C s d S)z-Called before writing each message to file f.Nr )r r� r r r r� � s z$_singlefileMailbox._pre_message_hookc C s d S)z,Called after writing each message to file f.Nr )r r� r r r r� � s z%_singlefileMailbox._post_message_hookc C s> z | j � Wd z | j r' | j � Wd | j j � XXd S)z Flush and close the mailbox.N)rD r� rF r� rG )r r r r rG � s z_singlefileMailbox.closec C s] | j d k r | j � | d k rY y | j | SWn" t k
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_generate_tocr! )r r r r r r� � s
z_singlefileMailbox._lookupc C s� | j j d d � | j j � } t | j � d k rQ | j rQ | j | j � y3 | j | j � | j | � } | j | j � Wn% t
k
r� | j j | � � Yn X| j j � | j j � | _
| S)z;Append message to mailbox and return (start, stop) offsets.r rO )r� rZ r� r� r} r� r� r� �_install_messager� r� �truncaterD r� )r r ZbeforeZoffsetsr r r r� � s
z"_singlefileMailbox._append_message)rp rq rr rs r r r r# r1 r: r; rE rF rD r� r� r� rG r� r� r r r r r� < s"
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r� c @ sa e Z d Z d Z d Z d d � Z d d d � Z d d d � Z d d
d � Z d d
� Z d S)� _mboxMMDFzAn mbox or MMDF mailbox.Tc C s� | j | � \ } } | j j | � | j j � j t d � } | j j | | j j � � } | j | j t d � � } | j | d d � j
d � � | S)z4Return a Message representation or raise a KeyError.� s
rQ Nr ) r� r� rZ rg r[ r\ rM r� �_message_factory�set_from�decode)r r r� r� � from_line�stringr� r r r r' s z_mboxMMDF.get_messageFc C s" t j | j | � � j d | � S)z3Return a string representation or raise a KeyError.�unixfrom)r, r- r. r/ )r r �from_r r r r0 s z_mboxMMDF.get_stringc C sg | j | � \ } } | j j | � | s8 | j j � | j j | | j j � � } | j t d � S)z3Return a string representation or raise a KeyError.s
)r� r� rZ rg rM r� r[ r\ )r r r� r� r� r� r r r r. s
z_mboxMMDF.get_bytesc C sT | j | � \ } } | j j | � | s8 | j j � t | j | j j � | � S)z6Return a file-like representation or raise a KeyError.)r� r� rZ rg � _PartialFiler� )r r r� r� r� r r r r* s
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j � r | j � } | d k r | j d � } | d k r+d t
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rP r� r s From MAILER-DAEMON rS )rT r` rK ra rh �find�_mboxMMDFMessage�get_fromrH r, r r � get_unixfromr� �asctime�gmtimer� r� r] r\ ro �
_mangle_from_)r r r� �newlineZauthorr� r� r r r r� $ s0
z_mboxMMDF._install_messageN)
rp rq rr rs r� r' r0 r. r* r� r r r r r� � s
r� c @ sL e Z d Z d Z d Z d Z d d d d � Z d d � Z d d � Z d S)
r zA classic mbox mailbox.TNc C s# t | _ t j | | | | � d S)zInitialize an mbox mailbox.N)r
r� r� r )r r r r r r r r J s z
mbox.__init__c C s | j t � d S)z,Called after writing each message to file f.N)r] r\ )r r� r r r r� O s zmbox._post_message_hookc C sJ g g } } d } | j j d � x� | j j � } | j j � } | j d � r� t | � t | � k r� | r� | j | t t � � n
| j | � | j | � d } q& | s� | r� | j | t t � � n
| j | � Pq& | t k r� d } q& d } q& Wt t t
| | � � � | _ t | j � | _ | j j � | _
d S)z0Generate key-to-(start, stop) table of contents.Fr s From TN)r� rZ r� rg rh r� r� r\ �dict� enumerate�zipr} r� r� )r �starts�stopsZlast_was_empty�line_posrn r r r r� S s0
zmbox._generate_toc) rp rq rr rs r� r^ r r� r� r r r r r A s c @ sL e Z d Z d Z d d d d � Z d d � Z d d � Z d
d � Z d S) r zAn MMDF mailbox.NTc C s# t | _ t j | | | | � d S)zInitialize an MMDF mailbox.N)r
r� r� r )r r r r r r r r x s z
MMDF.__init__c C s | j d t � d S)z-Called before writing each message to file f.s N)r] r\ )r r� r r r r� } s zMMDF._pre_message_hookc C s | j t d t � d S)z,Called after writing each message to file f.s N)r] r\ )r r� r r r r� � s zMMDF._post_message_hookc C s; g g } } | j j d � d } x� | } | j j � } | j j � } | j d t � r� | j | � xq | } | j j � } | j j � } | d t k r� | j | t t � � Pqm | sm | j | � Pqm Wq& | s& Pq& Wt t t
| | � � � | _ t | j � | _ | j j d d � | j j � | _
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c @ s$ e Z d Z d Z d d d d � Z d d � Z d d � Z d
d � Z d d
� Z d d � Z d d � Z
d d � Z d d � Z d d � Z
d d � Z d d � Z d d � Z d d � Z d d! � Z d" d# � Z d$ d% � Z d& d' � Z d( d) � Z d* d+ � Z d, d- � Z d. d/ � Z d S)0r zAn MH mailbox.NTc C s� t j | | | | � t j j | j � s� | r� t j | j d � t j t j t j j | j d � t j
t j Bt j Bd � � n t
| j � � d | _ d S)zInitialize an MH instance.i� z
.mh_sequencesi� FN)r r r r rz r r{ rG r� rx r� �O_EXCLr� r| r� )r r r r r r r r � s !!z MH.__init__c C s, | j � } t | � d k r' d } n t | � d } t j j | j t | � � } t | � } d } z� | j r} t
| � z y | j | | � WnE t k
r� | j r� t
| � t | � d } t j | � � Yn Xt | t � r� | j | | � Wd | j rt
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zMH.addc C s� t j j | j t | � � } y t | d � } WnM t k
r� } z- | j t j k rk t d | � � n � WYd d } ~ Xn X| j
� t j | � d S)z=Remove the keyed message; raise KeyError if it doesn't exist.zrb+zNo message with key: %sN) r r rx r r` r� r� r� r� r! rG r )r r r r� r� r r r r � s
z MH.removec C s t j j | j t | � � } y t | d � } WnM t k
r� } z- | j t j k rk t d | � � n � WYd d } ~ Xn Xz� | j
r� t | � zV t j t j | t j
t j B� � | j | | � t | t � r� | j | | � Wd | j
rt | � XWd t | � Xd S)z>Replace the keyed message; raise KeyError if it doesn't exist.zrb+zNo message with key: %sN)r r rx r r` r� r� r� r� r! r� r� rG r� �O_TRUNCro rT r r r� r� )r r r r r� r� r r r r# � s$
# zMH.__setitem__c C s6 y^ | j r6 t t j j | j t | � � d � } n' t t j j | j t | � � d � } WnM t k
r� } z- | j t j k r� t
d | � � n � WYd d } ~ Xn X| �? | j r� t | � z t | � } Wd | j r� t
| � XWd QRXx9 | j � j � D]% \ } } | | k r | j | � q W| S)z4Return a Message representation or raise a KeyError.zrb+r� zNo message with key: %sN)r� r� r r rx r r` r� r� r� r! r� r r� �
get_sequencesr9 � add_sequence)r r r� r� r� r� �key_listr r r r' � s& *+
zMH.get_messagec C s y^ | j r6 t t j j | j t | � � d � } n' t t j j | j t | � � d � } WnM t k
r� } z- | j t j k r� t
d | � � n � WYd d } ~ Xn X| �I | j r� t | � z | j � j
t d � SWd | j r� t | � XWd QRXd S)z2Return a bytes representation or raise a KeyError.zrb+r� zNo message with key: %sNs
)r� r� r r rx r r` r� r� r� r! r� rM r[ r\ r� )r r r� r� r r r r. s *+
z MH.get_bytesc C s� y+ t t j j | j t | � � d � } WnM t k
rz } z- | j t j k re t d | � � n � WYd d } ~ Xn Xt
| � S)z6Return a file-like representation or raise a KeyError.r� zNo message with key: %sN) r� r r rx r r` r� r� r� r! r� )r r r� r� r r r r* ' s +z MH.get_filec C s) t t d d � t j | j � D� � � S)z Return an iterator over keys.c s s' | ] } | j � r t | � Vq d S)N)�isdigitr� )�.0r� r r r � <genexpr>4 s z MH.iterkeys.<locals>.<genexpr>)�iterr� r r� r )r r r r r1 2 s z MH.iterkeysc C s( t j j t j j | j t | � � � S)z9Return True if the keyed message exists, False otherwise.)r r rz rx r r` )r r r r r r: 7 s zMH.__contains__c C s t t | j � � � S)z*Return a count of messages in the mailbox.)r� r2 r1 )r r r r r; ; s z
MH.__len__c C sG | j sC t t j j | j d � d � | _ t | j � d | _ d S)zLock the mailbox.z
.mh_sequenceszrb+TN)r� r� r r rx r r� r� )r r r r rE ? s $
zMH.lockc C s6 | j r2 t | j � t | j � | ` d | _ d S)z#Unlock the mailbox if it is locked.FN)r� r� r� r� )r r r r rF F s
z MH.unlockc C s d S)z&Write any pending changes to the disk.Nr )r r r r rD N s zMH.flushc C s | j r | j � d S)z Flush and close the mailbox.N)r� rF )r r r r rG R s zMH.closec C sX g } xK t j | j � D]7 } t j j t j j | j | � � r | j | � q W| S)z Return a list of folder names.)r r� r r r� rx r� )r r= r� r r r r� W s
$zMH.list_foldersc C s+ t t j j | j | � d | j d d �S)z+Return an MH instance for the named folder.r r F)r r r rx r r )r r� r r r r� _ s z
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.mh_sequenceszFolder not empty: %sN)r r rx r r� r r� r� )r r� r �entriesr r r r� i s zMH.remove_folderc
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| � � q} d d � | j d � D� \ } } | j t | | d � � q} W� f d
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<listcomp>� s z$MH.get_sequences.<locals>.<listcomp>r z"Invalid sequence specification: %sN)r� r r rx r �setr3 r� r r r� rC �ranger� r� rJ � FormatError�rstrip)
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| � | } q� W| rA| j t | � d � q] | j d � q] WWd t | � Xd S)z:Set sequences using the given name-to-key-list dictionary.z
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t j j | j t | � � � nD t j t j j | j t | � � t j j | j t | d � � � | d 7} q% W| d | _ t
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zMH._dump_sequences)rp rq rr rs r r r r# r' r. r* r1 r: r; rE rF rD rG r� r� r� r� r r r$ r r r r r r � s. " c @ s� e Z d Z d Z e d d d d d d d h � Z d d
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d d � Z d d � Z d d � Z
d d � Z d d � Z d d � Z d! d" � Z d# d$ � Z d S)%r z An Rmail-style Babyl mailbox.�unseen�deletedZfiled�answered� forwardedZedited�resentNTc C s# t j | | | | � i | _ d S)zInitialize a Babyl mailbox.N)r� r �_labels)r r r r r r r r � s zBabyl.__init__c C s8 t j | | � } t | t � r4 | j � | j | <| S)z$Add message and return assigned key.)r� r rT r �
get_labelsr+ )r r r r r r r � s z Babyl.addc C s- t j | | � | | j k r) | j | =d S)z=Remove the keyed message; raise KeyError if it doesn't exist.N)r� r r+ )r r r r r r � s z Babyl.removec C s9 t j | | | � t | t � r5 | j � | j | <d S)z>Replace the keyed message; raise KeyError if it doesn't exist.N)r� r# rT r r, r+ )r r r r r r r# � s zBabyl.__setitem__c
C sm | j | � \ } } | j j | � | j j � t j � } xD | j j � } | d t k sg | rh P| j | j t d � � qA Wt j � } x@ | j j � } | t k s� | r� P| j | j t d � � q� W| | j j � } | d k s� t
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� } | d k s� t � | j j | � } | j t d � } | | S)z3Return a string representation or raise a KeyError.s *** EOOH ***s
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r� r� rZ rg rU rV r\ r] r[ rf r� r� rM ) r r r� r� r/ rn Zheadersr0 rm r r r r. s&
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)rU rV r. r[ r\ )r r r r r r* " s zBabyl.get_filec C sT | j � t � } x$ | j j � D] } | j | � q# W| j | j � t | � S)z4Return a list of user-defined labels in the mailbox.)r� r r+ r7 rC �difference_update�_special_labelsr2 )r �labelsZ
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zBabyl._pre_mailbox_hookc C s | j d t � d S)z-Called before writing each message to file f.s N)r] r\ )r r� r r r r� W s zBabyl._pre_message_hookc C s | j t d � d S)z,Called after writing each message to file f.s N)r] r\ )r r� r r r r� [ s zBabyl._post_message_hookc C s� | j j � } t | t � r� g } g } x@ | j � D]2 } | | j k r\ | j | � q7 | j | � q7 W| j j d � x( | D] } | j j d | j � � q� W| j j d � x, | D]$ } | j j d | j � d � q� W| j j t � n | j j d t � t | t
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c @ s= e Z d Z d Z d d d � Z d d � Z d d � Z d S) r z0Message with mailbox-format-specific properties.Nc C s) t | t j j � rJ | j t j | � � t | t � r%| j | � n� t | t � rr | j t j | � � n� t | t
� r� | j t j | � � n� t | t j
� r� | j t j | � � n` t | d � r� | j t j | � � n8 | d k rt j j j | � n t d t | � � � d S)z Initialize a Message instance.rM NzInvalid message type: %s)rT r, r r �_become_message�copy�deepcopy� _explain_tora r- r` Zmessage_from_stringrU �
TextIOWrapperZmessage_from_filer@ Zmessage_from_binary_filer ri rj )r r r r r r � s zMessage.__init__c C sJ t | d g � } x1 | j D]& } | | k r | j | | j | <q Wd S)z0Assume the non-format-specific state of message.�_type_specific_attributesN)�getattr�__dict__)r r Z
type_specificr� r r r r; � s zMessage._become_messagec C s# t | t � r d St d � � d S)z:Copy format-specific state to message insofar as possible.Nz Cannot convert to specified type)rT r ri )r r r r r r> � s zMessage._explain_to)rp rq rr rs r r; r> r r r r r � s c @ s� e Z d Z d Z d d d g Z d d d � Z d d � Z d
d � Z d d
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d d � Z d d � Z d d � Z
d d � Z d d � Z d d � Z d S) r z)Message with Maildir-specific properties.�_subdir�_info�_dateNc C s5 d | _ d | _ t j � | _ t j | | � d S)z%Initialize a MaildirMessage instance.rv r� N)rC rD r� rE r r )r r r r r r � s zMaildirMessage.__init__c C s | j S)zReturn 'new' or 'cur'.)rC )r r r r r� � s zMaildirMessage.get_subdirc C s8 | d k s | d k r$ | | _ n t d | � � d S)z Set subdir to 'new' or 'cur'.rv rw z!subdir must be 'new' or 'cur': %sN)rC rJ )r r� r r r r� s zMaildirMessage.set_subdirc C s+ | j j d � r# | j d d � Sd Sd S)z*Return as a string the flags that are set.z2,rO Nr� )rD rh )r r r r � get_flags s zMaildirMessage.get_flagsc C s d d j t | � � | _ d S)z)Set the given flags and unset all others.z2,r� N)rx r� rD )r �flagsr r r � set_flags s zMaildirMessage.set_flagsc C s0 | j d j t | j � � t | � B� � d S)z.Set the given flag(s) without changing others.r� N)rH rx r rF )r �flagr r r �add_flag s zMaildirMessage.add_flagc C s< | j � r8 | j d j t | j � � t | � � � d S)z7Unset the given string flag(s) without changing others.r� N)rF rH rx r )r rI r r r � remove_flag s zMaildirMessage.remove_flagc C s | j S)z<Return delivery date of message, in seconds since the epoch.)rE )r r r r r� s zMaildirMessage.get_datec C s< y t | � | _ Wn" t k
r7 t d | � � Yn Xd S)z9Set delivery date of message, in seconds since the epoch.zcan't convert to float: %sN)�floatrE rJ ri )r Zdater r r r� s
zMaildirMessage.set_datec C s | j S)z%Get the message's "info" as a string.)rD )r r r r r� & s zMaildirMessage.get_infoc C s5 t | t � r | | _ n t d t | � � � d S)z Set the message's "info" string.zinfo must be a string: %sN)rT r` rD ri rj )r �infor r r r� * s zMaildirMessage.set_infoc C s4 t | t � rK | j | j � � | j | j � � | j | j � � n�t | t � rt | j � � } d | k r� | j
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� d | k r�| j d � d | k r0| j d � n( t | t � rn t d t | � � � d S)z;Copy Maildir-specific state to message insofar as possible.�S�Rrw �O�T�D�F�Az
MAILER-DAEMONr& �replied�flaggedr' r( �Pr) z$Cannot convert to specified type: %sN)rT r rH rF r� r� r� r� r� r rJ r� r� r� r r r � add_labelr ri rj )r r rG r r r r> 1 sN
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d d � Z d d � Z d S)r� z/Message with mbox- or MMDF-specific properties.�_fromNc C sw | j d d � t | t j j � rc | j � } | d k rc | j d � rc | j | d d � � t j | | � d S)z'Initialize an mboxMMDFMessage instance.z
MAILER-DAEMONTNzFrom rQ )r� rT r, r r r� rh r )r r r� r r r r b s z_mboxMMDFMessage.__init__c C s | j S)z Return contents of "From " line.)rY )r r r r r� k s z_mboxMMDFMessage.get_fromc C sH | d k r; | d k r$ t j � } | d t j | � 7} | | _ d S)z>Set "From " line, formatting and appending time_ if specified.NT� )r� r� r� rY )r r� Ztime_r r r r� o s
z_mboxMMDFMessage.set_fromc C s | j d d � | j d d � S)z*Return as a string the flags that are set.�Statusr� zX-Status)r& )r r r r rF w s z_mboxMMDFMessage.get_flagsc C s t | � } d
\ } } x1 d D]) } | | k r | | 7} | j | � q Wx1 d D]) } | | k rS | | 7} | j | � qS W| d j t | � � 7} y | j d | � Wn" t k
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z_mboxMMDFMessage.set_flagsc C s0 | j d j t | j � � t | � B� � d S)z.Set the given flag(s) without changing others.r� N)rH rx r rF )r rI r r r rJ � s z_mboxMMDFMessage.add_flagc C sH d | k s d | k rD | j d j t | j � � t | � � � d S)z7Unset the given string flag(s) without changing others.r[ zX-Statusr� N)rH rx r rF )r rI r r r rK � s z _mboxMMDFMessage.remove_flagc C ss t | t � rt | j � � } d | k r: | j d � d | k rS | j d � d | k rl | j d � d | k r� | j d � d | k r� | j d � | d =| d
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_sequencesNc C s g | _ t j | | � d S)z!Initialize an MHMessage instance.N)r` r r )r r r r r r � s zMHMessage.__init__c C s | j d d � S)z4Return a list of sequences that include the message.N)r` )r r r r r � s zMHMessage.get_sequencesc C s t | � | _ d S)z3Set the list of sequences that include the message.N)r2 r` )r r r r r r � s zMHMessage.set_sequencesc C sK t | t � r1 | | j k rG | j j | � n t d t | � � � d S)z8Add sequence to list of sequences including the message.z sequence type must be str: %sN)rT r` r` r� ri rj )r r% r r r r � s zMHMessage.add_sequencec C s- y | j j | � Wn t k
r( Yn Xd S)zARemove sequence from the list of sequences including the message.N)r` r rJ )r r% r r r �remove_sequence� s
zMHMessage.remove_sequencec C s� t | t � r� t | j � � } d | k r= | j d � n | j d � | j d � d | k rp | j d � d | k r�| j d � n3t | t � r t | j � � } d | k r� | j d � n
| j d � d | k r� | j d � d | k r�| j d
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zMHMessage._explain_to) rp rq rr rs r@ r r r r ra r> r r r r r � s c @ s� e Z d Z d Z d d g Z d d d � Z d d � Z d d
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d S)r z'Message with Babyl-specific properties.r+ �_visibleNc C s) g | _ t � | _ t j | | � d S)z#Initialize a BabylMessage instance.N)r+ r rc r )r r r r r r s zBabylMessage.__init__c C s | j d d � S)z'Return a list of labels on the message.N)r+ )r r r r r, % s zBabylMessage.get_labelsc C s t | � | _ d S)z&Set the list of labels on the message.N)r2 r+ )r r3 r r r r. ) s zBabylMessage.set_labelsc C sK t | t � r1 | | j k rG | j j | � n t d t | � � � d S)z+Add label to list of labels on the message.zlabel must be a string: %sN)rT r` r+ r� ri rj )r r5 r r r rX - s zBabylMessage.add_labelc C s- y | j j | � Wn t k
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t | j � S)z3Return a Message representation of visible headers.)r rc )r r r r r9 < s zBabylMessage.get_visiblec C s t | � | _ d S)z2Set the Message representation of visible headers.N)r rc )r Zvisibler r r r- @ s zBabylMessage.set_visiblec C s� xG | j j � D]6 } | | k r< | j j | | | � q | j | =q Wx: d D]2 } | | k rQ | | j k rQ | | | j | <qQ Wd S) z9Update and/or sensibly generate a set of visible headers.�Date�From�Reply-To�To�CC�SubjectN)re rf rg rh ri rj )rc r3 r\ )r �headerr r r �update_visibleD s
zBabylMessage.update_visiblec C s� t | t � r� t | j � � } d | k r= | j d � n | j d � | j d � d | k so d | k r| | j d � d | k r� | j d � d | k r�| j d
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� r�n t d t | � � � d S)z9Copy Babyl-specific state to message insofar as possible.r& rw rN r) r* rW r( rO r' rQ rb rP rR rT rU z$Cannot convert to specified type: %sN)rT r r r, r� rJ r� r r r r- r9 rX r ri rj )r r r3 r5 r r r r> O sF
zBabylMessage._explain_to)rp rq rr rs r@ r r, r. rX rd r9 r- rl r> r r r r r s c @ s e Z d Z d Z d S)r
z&Message with MMDF-specific properties.N)rp rq rr rs r r r r r
y s c @ s� e Z d Z d Z d d d � Z d d d � Z d d d � Z d d d
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d d � Z d d � Z d d � Z d d � Z d d! � Z d" d# � Z e d$ d% � � Z d S)&r� z A read-only wrapper of a file.Nc C s4 | | _ | d k r' | j � | _ n | | _ d S)zInitialize a _ProxyFile.N)r� r� �_pos)r r� �posr r r r � s z_ProxyFile.__init__c C s | j | | j j � S)z Read bytes.)�_readr� rM )r �sizer r r rM � s z_ProxyFile.readc C s | j | | j j � S)z Read bytes.)ro r� �read1)r rp r r r rq � s z_ProxyFile.read1c C s | j | | j j � S)z Read a line.)ro r� rg )r rp r r r rg � s z_ProxyFile.readlinec C sQ g } xD | D]< } | j | � | d k r
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z_ProxyFile.readlinesc c s& x | j � } | s d S| Vq Wd S)zIterate over lines.N)rg )r rn r r r r6 � s
z_ProxyFile.__iter__c C s | j S)zReturn the position.)rm )r r r r r� � s z_ProxyFile.tellr c C sH | d k r | j j | j � | j j | | � | j j � | _ d S)zChange position.rP N)r� rZ rm r� )r �offset�whencer r r rZ � s z_ProxyFile.seekc
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z_ProxyFile.closec C sG | d k r d } | j j | j � | | � } | j j � | _ | S)z"Read size bytes using read_method.NrP rS )r� rZ rm r� )r rp � read_methodr= r r r ro � s z_ProxyFile._readc C s | S)z$Context management protocol support.r )r r r r � __enter__� s z_ProxyFile.__enter__c G s | j � d S)N)rG )r �excr r r �__exit__� s z_ProxyFile.__exit__c C s
| j j � S)N)r� �readable)r r r r rz � s z_ProxyFile.readablec C s
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� Z d S)r� z&A read-only wrapper of part of a file.Nc C s) t j | | | � | | _ | | _ d S)zInitialize a _PartialFile.N)r� r �_start�_stop)r r� r� r� r r r r � s z_PartialFile.__init__c C s t j | � | j S)z*Return the position with respect to start.)r� r� r~ )r r r r r� � s z_PartialFile.tellr c C sV | d k r! | j | _ d } n | d k r? | j | _ d } t j | | | � d S)z8Change position, possibly with respect to start or stop.r rP rO N)r~ rm r r� rZ )r rt ru r r r rZ � s z_PartialFile.seekc C s] | j | j } | d k r d S| d k sD | d k sD | | k rJ | } t j | | | � S)z;Read size bytes using read_method, honoring start and stop.r r� N)r rm r� ro )r rp rv Z remainingr r r ro � s $z_PartialFile._readc C s t | d � r | ` d S)Nr� )r@ r� )r r r r rG s z_PartialFile.close) rp rq rr rs r r� rZ ro rG r r r r r� � s
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d � � Yn Xd S)z(Lock file f using lockf and dot locking.Fzlockf: lock unavailable: %sNz.lockr� Tzdot lock unavailable: %s)�fcntl�lockfZLOCK_EXZLOCK_NBr� r� ZEAGAINr� r� r� r� r� rG r@ r r� r! r� r� r �LOCK_UN)r� r� Z dotlock_doner� Zpre_lockr r r r� sF !
r� c C sJ t r t j | t j � t j j | j d � rF t j | j d � d S)z*Unlock file f using lockf and dot locking.z.lockN)r� r� r� r r rz r� r )r� r r r r� 0 s r� c C sL t j | t j t j Bt j Bd � } z t | d � SWd t j | � Xd S)zCCreate a file if it doesn't exist and open for reading and writing.i� zrb+N)r r� r� r �O_RDWRrG )r �fdr r r r� 7 s &r� c C s2 t d | t t j � � t j � t j � f � S)zBCreate a temp file based on path and open for reading and writing.z %s.%s.%s.%s)r� r� r� r� r� r r� )r r r r r� ? s r� c C s0 | j � t t d � r, t j | j � � d S)z0Ensure changes to file f are physically on disk.�fsyncN)rD r@ r r� �fileno)r� r r r r� E s
r� c C s t | � | j � d S)z:Close file f, ensuring all changes are physically on disk.N)r� rG )r� r r r r� K s
r� c @ s e Z d Z d Z d S)�Errorz"Raised for module-specific errors.N)rp rq rr rs r r r r r� Q s r� c @ s e Z d Z d Z d S)r| z:The specified mailbox does not exist and won't be created.N)rp rq rr rs r r r r r| T s r| c @ s e Z d Z d Z d S)r� z>The specified mailbox is not empty and deletion was requested.N)rp rq rr rs r r r r r� W s r� c @ s e Z d Z d Z d S)r� z)Another process caused an action to fail.N)rp rq rr rs r r r r r� Z s r� c @ s e Z d Z d Z d S)r z)A file appears to have an invalid format.N)rp rq rr rs r r r r r ] s r )0rs r r� r^ r� r� r< rc r, Z
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