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� �� f� c @ sd d Z d d l Z d d l Z d g Z Gd d � d � Z Gd d � d � Z Gd d � d � Z d S( u< robotparser.py 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://info.webcrawler.com/mak/projects/robots/norobots-rfc.html i Nu RobotFileParserc B s� | Ee Z d Z d Z 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 S( u RobotFileParserus This class provides a set of methods to read, parse and answer questions about a single robots.txt file. u c C s> g | _ d | _ d | _ d | _ | j | � d | _ d S( Ni F( u entriesu Noneu default_entryu Falseu disallow_allu allow_allu set_urlu last_checked( u selfu url( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __init__ s u RobotFileParser.__init__c C s | j S( u� 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. ( u last_checked( u self( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu mtime s u RobotFileParser.mtimec C s d d l } | j � | _ d S( uY Sets the time the robots.txt file was last fetched to the current time. i N( u timeu last_checked( u selfu time( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu modified( s u RobotFileParser.modifiedc C s5 | | _ t j j | � d d � \ | _ | _ d S( u, Sets the URL referring to a robots.txt file.i i N( u urlu urllibu parseu urlparseu hostu path( u selfu url( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu set_url0 s u RobotFileParser.set_urlc C s� y t j j | j � } Wna t j j k r| } z; | j d k rO d | _ n | j d k rj d | _ n WYd d } ~ Xn) X| j � } | j | j d � j � � d S( u4 Reads the robots.txt URL and feeds it to the parser.i� i� i� Nu utf-8( i� i� T( u urllibu requestu urlopenu urlu erroru HTTPErroru codeu Trueu disallow_allu allow_allu readu parseu decodeu splitlines( u selfu fu erru raw( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu read5 s u RobotFileParser.readc C sA d | j k r- | j d k r= | | _ q= n | j j | � d S( Nu *( u useragentsu default_entryu Noneu entriesu append( u selfu entry( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu _add_entryB s u RobotFileParser._add_entryc C s d } t � } x�| D]�} | sn | d k r@ t � } d } qn | d k rn | j | � t � } d } qn n | j d � } | d k r� | d | � } n | j � } | s� q n | j d d � } t | � d k r | d j � j � | d <t j j | d j � � | d <| d d k rd| d k rG| j | � t � } n | j j | d � d } q�| d d k r�| d k r�| j j t | d d � � d } q�q�| d d k r�| d k r�| j j t | d d � � d } q�q�q q W| d k r| j | � n d S( u� 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 u #Nu :u user-agentu disallowu allowFT( u Entryu _add_entryu findu stripu splitu lenu loweru urllibu parseu unquoteu useragentsu appendu rulelinesu RuleLineu Falseu True( u selfu linesu stateu entryu lineu i( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu parseK sJ u RobotFileParser.parsec C s� | j r d S| j r d St j j t j j | � � } t j j d d | j | j | j | j f � } t j j | � } | s� d } n x- | j D]" } | j | � r� | j | � Sq� W| j r� | j j | � Sd S( u= using the parsed robots.txt decide if useragent can fetch urlu u /FT( u disallow_allu Falseu allow_allu Trueu urllibu parseu urlparseu unquoteu urlunparseu pathu paramsu queryu fragmentu quoteu entriesu applies_tou allowanceu default_entry( u selfu useragentu urlu parsed_urlu entry( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu can_fetch~ s u RobotFileParser.can_fetchc C s d j d d � | j D� � S( Nu c S s g | ] } t | � d � q S( u ( u str( u .0u entry( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu <listcomp>� s u+ RobotFileParser.__str__.<locals>.<listcomp>( u joinu entries( u self( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __str__� s u RobotFileParser.__str__N( u __name__u __module__u __qualname__u __doc__u __init__u mtimeu modifiedu set_urlu readu _add_entryu parseu can_fetchu __str__( u __locals__( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu RobotFileParser s 3 c B s> | Ee Z d Z d Z d d � Z d d � Z d d � Z d S( u RuleLineuo A rule line is a single "Allow:" (allowance==True) or "Disallow:" (allowance==False) followed by a path.c C s\ | d k r | r d } n t j j t j j | � � } t j j | � | _ | | _ d S( Nu T( u Trueu urllibu parseu urlunparseu urlparseu quoteu pathu allowance( u selfu pathu allowance( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __init__� s u RuleLine.__init__c C s | j d k p | j | j � S( Nu *( u pathu startswith( u selfu filename( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu applies_to� s u RuleLine.applies_toc C s | j r d p d d | j S( Nu Allowu Disallowu : ( u allowanceu path( u self( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __str__� s u RuleLine.__str__N( u __name__u __module__u __qualname__u __doc__u __init__u applies_tou __str__( u __locals__( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu RuleLine� s u RuleLinec B sJ | Ee Z d Z d Z d d � Z d d � Z d d � Z d d � Z d S( u Entryu? An entry has one or more user-agents and zero or more rulelinesc C s g | _ g | _ d S( N( u useragentsu rulelines( u self( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __init__� s u Entry.__init__c C sj g } x' | j D] } | j d | d g � q Wx* | j D] } | j t | � d g � q: Wd j | � S( Nu User-agent: u u ( u useragentsu extendu rulelinesu stru join( u selfu retu agentu line( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu __str__� s u Entry.__str__c C s] | j d � d j � } x= | j D]2 } | d k r9 d S| j � } | | k r# d Sq# Wd S( u2 check if this entry applies to the specified agentu /i u *TF( u splitu loweru useragentsu Trueu False( u selfu useragentu agent( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu applies_to� s u Entry.applies_toc C s. x' | j D] } | j | � r | j Sq Wd S( uZ Preconditions: - our agent applies to this entry - filename is URL decodedT( u rulelinesu applies_tou allowanceu True( u selfu filenameu line( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu allowance� s u Entry.allowanceN( u __name__u __module__u __qualname__u __doc__u __init__u __str__u applies_tou allowance( u __locals__( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu Entry� s u Entry( u __doc__u urllib.parseu urllibu urllib.requestu __all__u RobotFileParseru RuleLineu Entry( ( ( u7 /opt/alt/python33/lib64/python3.3/urllib/robotparser.pyu <module> s �
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