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Copyright (C) 2000 Bastian Kleineidam
You can choose between two licenses when using this package:
1) GNU GPLv2
2) PSF license for Python 2.2
The robots.txt Exclusion Protocol is implemented as specified in
http://www.robotstxt.org/norobots-rfc.txt
i����Nt RobotFileParserc B sb e Z d Z d d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
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questions about a single robots.txt file.
t c C s> g | _ d | _ t | _ t | _ | j | � d | _ d S( Ni ( t entriest Nonet
default_entryt Falset disallow_allt allow_allt set_urlt last_checked( t selft url( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyt __init__ s
c C s | j S( s� Returns the time the robots.txt file was last fetched.
This is useful for long-running web spiders that need to
check for new robots.txt files periodically.
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( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyt mtime! s c C s d d l } | j � | _ d S( sY Sets the time the robots.txt file was last fetched to the
current time.
i����N( t timeR ( R
R ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyt modified* s c C s/ | | _ t j | � d d !\ | _ | _ d S( s, Sets the URL referring to a robots.txt file.i i N( R t urlparset hostt path( R
R ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyR 2 s c C s� t � } | j | j � } g | D] } | j � ^ q" } | j � | j | _ | j d k rk t | _ nO | j d k r� | j d k r� t | _ n% | j d k r� | r� | j | � n d S( s4 Reads the robots.txt URL and feeds it to the parser.i� i� i� i� i� N( i� i� (
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s� parse the input lines from a robots.txt file.
We allow that a user-agent: line is not preceded by
one or more blank lines.i i i t #t :s
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| � } | s� d } n x- | j D]" } | j | � r� | j | � Sq� W| j r� | j j | � St S( s= using the parsed robots.txt decide if useragent can fetch urlR t /( R R R R R R R- R. t
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parsed_urlR" ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyt can_fetch� s$ c C sE | j } | j d k r+ | | j g } n d j t t | � � d S( Ns
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R R R R# R R> RB ( ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyR s 4 R0 c B s) e Z d Z d � Z d � Z d � Z RS( so A rule line is a single "Allow:" (allowance==True) or "Disallow:"
(allowance==False) followed by a path.c C sS | d k r | r t } n t j t j | � � } t j | � | _ | | _ d S( NR ( R R R5 R- R9 R R; ( R
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t filename( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyR: � s c C s | j r d p d d | j S( Nt Allowt Disallows : ( R; R ( R
( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyRB � s ( RC RD RE R R: RB ( ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyR0 � s R( c B s2 e Z d Z d � Z d � Z d � Z d � Z RS( s? An entry has one or more user-agents and zero or more rulelinesc C s g | _ g | _ d S( N( R R/ ( R
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t rett agentR ( ( s0 /opt/alt/python27/lib64/python2.7/robotparser.pyRB � s c C s] | j d � d j � } x= | j D]2 } | d k r9 t S| j � } | | k r# t Sq# Wt S( s2 check if this entry applies to the specified agentR4 i R ( R* R, R R R ( R
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Wt S( sZ Preconditions:
- our agent applies to this entry
- filename is URL decoded( R/ R: R; R ( R
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