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eBdV �ZEe,eBd �ZFe;dW�GeAe<eDdX�e<eEdY�eF�� �qie1�H� dS dS )\a� An NNTP client class based on:
- RFC 977: Network News Transfer Protocol
- RFC 2980: Common NNTP Extensions
- RFC 3977: Network News Transfer Protocol (version 2)
Example:
>>> from nntplib import NNTP
>>> s = NNTP('news')
>>> resp, count, first, last, name = s.group('comp.lang.python')
>>> print('Group', name, 'has', count, 'articles, range', first, 'to', last)
Group comp.lang.python has 51 articles, range 5770 to 5821
>>> resp, subs = s.xhdr('subject', '{0}-{1}'.format(first, last))
>>> resp = s.quit()
>>>
Here 'resp' is the server response line.
Error responses are turned into exceptions.
To post an article from a file:
>>> f = open(filename, 'rb') # file containing article, including header
>>> resp = s.post(f)
>>>
For descriptions of all methods, read the comments in the code below.
Note that all arguments and return values representing article numbers
are strings, not numbers, since they are rarely used for calculations.
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date has the YYYYMMDD format and time the HHMMSS format
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Z000000z({0.hour:02d}{0.minute:02d}{0.second:02d}rT z {0:02d}{1.month:02d}{1.day:02d}z {0:04d}{1.month:02d}{1.day:02d})r/ rU �formatrX )ZdtZlegacyrW �yrV r r r �_unparse_datetime� s
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connecting.
- usenetrc: allow loading username and password from ~/.netrc file
if not specified explicitly
- timeout: timeout (in seconds) used for socket connections
readermode is sometimes necessary if you are connecting to an
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if it 201, posting is not allowed.z *welcome*)rq �print�reprrs r{ r r r �
getwelcome� s zNNTP.getwelcomec C s� | j du rAd| _d| _z| �� \}}W n ttfy# i | _ Y | j S w || _ d|v r5ttt|d ��| _d|v rAd� |d �| _| j S )z�Get the server capabilities, as read by __init__().
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zNNTP.set_debuglevelc C sH t �d| |� |t }| jdkrtdt|�� | j�|� | j�� dS )zfInternal: send one line to the server, appending CRLF.
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tdt|�� |�| j| j�}| �|� dS )zkInternal: send one command to the server (through _putline()).
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NNTP._getlinec C sl | � � }| jrtdt|�� |�| j| j�}|dd� }|dkr$t|��|dkr,t|��|dvr4t |��|S )z�Internal: get a response from the server.
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NNTP._getrespc C s� d}zot |ttf�rt|d� }}| �� }|dd� tvr!t|��g }|durJdt df} | �d�}||v r8n|� d�rC|dd� }|�
|� q.n d} | �� }||krVn|� d�ra|dd� }|� |� qMW |rn|� � ||fS |ry|� � w w ) aP Internal: get a response plus following text from the server.
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string and `lines` is a list of bytes objects.
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�zNNTP._getlongrespc C s | � |� | �� S )zWInternal: send a command and get the response.
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zNNTP._shortcmdc C s | � |� | �|�S )zoInternal: send a command and get the response plus following text.
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NNTP._longcmdc s. � � |� � �|�\}}|� fdd�|D �fS )z�Internal: send a command and get the response plus following text.
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<listcomp>+ s �z'NNTP._longcmdstring.<locals>.<listcomp>r� )r r? rf r� �listr r{ r �_longcmdstring$ s
�zNNTP._longcmdstringc C s` z| j W S ty
Y nw z | �d�\}}W n ty& tdd� }Y nw t|�}|| _ |S )zqInternal: get the overview format. Queries the server if not
already done, else returns the cached value.zLIST OVERVIEW.FMTN)Z_cachedoverviewfmt�AttributeErrorr� r r< rD )r r� r# r> r r r �_getoverviewfmt. s � �zNNTP._getoverviewfmtc C s dd� |D �S )Nc S s g | ]}t |�� � �qS r )r% rF r� r r r r� A s z#NNTP._grouplist.<locals>.<listcomp>r )r r# r r r �
_grouplist? s zNNTP._grouplistc C s8 i }| � d�\}}|D ] }|�� ^}}|||< q ||fS )a! Process a CAPABILITIES command. Not supported by all servers.
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Z CAPABILITIES)r� rF )r r� r� r# r? r@ rJ r r r r� C s
zNNTP.capabilities)rf c C sb t |tjtjf�std�|jj���t|| jdk �\}}d�||�}| � ||�\}}|| �
|�fS )z�Process a NEWGROUPS command. Arguments:
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� zNNTP.newgroupsc C sR t |tjtjf�std�|jj���t|| jdk �\}}d�|||�}| � ||�S )z�Process a NEWNEWS command. Arguments:
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r� rO zNEWNEWS {0} {1} {2})
r/ rU r r� rZ r� r r\ r� r� )r r& r rf rV rW r� r r r �newnewsa s
� z NNTP.newnewsc C s4 |dur d| }nd}| � ||�\}}|| �|�fS )a@ Process a LIST or LIST ACTIVE command. Arguments:
- group_pattern: a pattern indicating which groups to query
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Returns:
- resp: server response if successful
- list: list of (group, last, first, flag) (strings)
Nz LIST ACTIVE ZLIST)r� r� )r �
group_patternrf �commandr� r# r r r r� q s
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|| < q |rD||fS dS )Nz ^(?P<group>[^ ]+)[ ]+(.*)$zLIST NEWSGROUPS r zXGTITLE r7 rO r- )�re�compiler� rI �search�stripr& ) r r� Z
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�zNNTP._getdescriptionsc C � | � |d�S )a� Get a description for a single group. If more than one
group matches ('group' is a pattern), return the first. If no
group matches, return an empty string.
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only be '215' or '285' (for xgtitle) anyway. If the response
code is needed, use the 'descriptions' method.
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it check whether the group actually exists.F�r� )r r& r r r � description� s zNNTP.descriptionc C r� )z'Get descriptions for a range of groups.Tr� )r r� r r r � descriptions� s zNNTP.descriptionsc C s� | � d| �}|�d�st|��|�� }d } }}t|�}|dkr@|d }|dkr@|d }|dkr@|d }|dkr@|d �� }|t|�t|�t|�|fS )a Process a GROUP command. Argument:
- group: the group name
Returns:
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- count: number of articles
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- last: last article number
- name: the group name
zGROUP r r r7 rO r� rP )r� rI r rF r= r9 rG )r r@ r� �words�countr( r' �nr r r r& � s
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NNTP.groupc C � | � d|�S )a Process a HELP command. Argument:
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of strings returned by the server in response to the
HELP command
ZHELP)r� )r rf r r r �help� s z NNTP.helpc C s8 |� d�s t|��|�� }t|d �}|d }|||fS )z_Internal: parse the response line of a STAT, NEXT, LAST,
ARTICLE, HEAD or BODY command.Z22r7 rO )rI r rF rG )r r� r� �art_numr+ r r r �
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zNNTP._statparsec C s | � |�}| �|�S )z/Internal: process a STAT, NEXT or LAST command.)r� r� )r r? r� r r r �_statcmd� s
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| � d�|��S | � d�S )a( Process a STAT command. Argument:
- message_spec: article number or message id (if not specified,
the current article is selected)
Returns:
- resp: server response if successful
- art_num: the article number
- message_id: the message id
zSTAT {0}ZSTAT)r� rZ )r � message_specr r r �stat� s
z NNTP.statc C �
| � d�S )z;Process a NEXT command. No arguments. Return as for STAT.ZNEXT�r� r{ r r r �next� �
z NNTP.nextc C r� )z;Process a LAST command. No arguments. Return as for STAT.ZLASTr� r{ r r r r' � r� z NNTP.lastc C s0 | � ||�\}}| �|�\}}}|t|||�fS )z2Internal: process a HEAD, BODY or ARTICLE command.)r� r� r* )r r? rf r� r# r� r+ r r r �_artcmd� s z NNTP._artcmdc C �$ |dur
d� |�}nd}| �||�S )a0 Process a HEAD command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the headers in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of header lines)
NzHEAD {0}ZHEAD�rZ r� �r r� rf r� r r r �head� � z NNTP.headc C r� )a+ Process a BODY command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the body in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of body lines)
NzBODY {0}ZBODYr� r� r r r �body r� z NNTP.bodyc C r� )a5 Process an ARTICLE command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the article in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of article lines)
Nz ARTICLE {0}ZARTICLEr� r� r r r �article r� z NNTP.articlec C r� )zYProcess a SLAVE command. Returns:
- resp: server response if successful
ZSLAVE)r� r{ r r r �slave! s
z
NNTP.slavec sD t �d�� | �d�||�|�\}}� fdd��|�fdd�|D �fS )ai Process an XHDR command (optional server extension). Arguments:
- hdr: the header type (e.g. 'subject')
- str: an article nr, a message id, or a range nr1-nr2
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of (nr, value) strings
z^([0-9]+) ?(.*)
?z XHDR {0} {1}c s � � | �}|r
|�dd�S | S )Nr7 rO )r� r& )r? �m)�patr r �
remove_number2 s
z NNTP.xhdr.<locals>.remove_numberc s g | ]}� |��qS r r r� )r� r r r� 5 s z NNTP.xhdr.<locals>.<listcomp>)r� r� r� rZ )r Zhdrr� rf r� r# r )r� r� r �xhdr' s
z NNTP.xhdrc C s. | � d�||�|�\}}| �� }|t||�fS )aF Process an XOVER command (optional server extension) Arguments:
- start: start of range
- end: end of range
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of dicts containing the response fields
z
XOVER {0}-{1})r� rZ r� rN )r �start�endrf r� r# r> r r r �xover7 s
�z
NNTP.xoverc C sx d| j v rdnd}t|ttf�r |\}}|d�||pd�7 }n
|dur)|d | }| �||�\}}| �� }|t||�fS )a� Process an OVER command. If the command isn't supported, fall
back to XOVER. Arguments:
- message_spec:
- either a message id, indicating the article to fetch
information about
- or a (start, end) tuple, indicating a range of article numbers;
if end is None, information up to the newest message will be
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- or None, indicating the current article number must be used
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