관리-도구
편집 파일: robotparser.cpython-35.pyc
��Yf4 � @ 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) a% 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://www.robotstxt.org/norobots-rfc.txt � N�RobotFileParserc @ s� e 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)r zs This class provides a set of methods to read, parse and answer questions about a single robots.txt file. � c C s> g | _ d | _ d | _ d | _ | j | � d | _ d S)NFr )�entries� default_entry� disallow_all� allow_all�set_url� last_checked)�self�url� r �7/opt/alt/python35/lib64/python3.5/urllib/robotparser.py�__init__ s zRobotFileParser.__init__c C s | j S)z�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. )r )r r r r �mtime s zRobotFileParser.mtimec C s d d l } | j � | _ d S)zYSets the time the robots.txt file was last fetched to the current time. r N)�timer )r r r r r �modified( s zRobotFileParser.modifiedc C s5 | | _ t j j | � d d � \ | _ | _ d S)z,Sets the URL referring to a robots.txt file.� � N)r �urllib�parse�urlparse�host�path)r r r r r r 0 s zRobotFileParser.set_urlc C s� y t j j | j � } Wnm t j j k r� } zG | j d k rO d | _ n' | j d k rv | j d k rv d | _ WYd d } ~ Xn) X| j � } | j | j d � j � � d S) z4Reads the robots.txt URL and feeds it to the parser.� � Ti� i� Nzutf-8)r r ) r ZrequestZurlopenr �errorZ HTTPError�coder r �readr �decode� splitlines)r �f�err�rawr r r r 5 s zRobotFileParser.readc C s> d | j k r* | j d k r: | | _ n | j j | � d S)N�*)� useragentsr r �append)r �entryr r r � _add_entryB s zRobotFileParser._add_entryc C s d } t � } | j � x�| D]�} | sr | d k rJ t � } d } n( | d k rr | j | � t � } d } | j d � } | d k r� | d | � } | j � } | s� q | j d d � } t | � d k r | d j � j � | d <t j j | d j � � | d <| d d k r_| d k rB| j | � t � } | j j | d � d } q | d d k r�| d k r�| j j t | d d � � d } q | d d k r | d k r | j j t | d d � � d } q W| d k r�| j | � d S) z�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. r r � �#N�:z user-agentZdisallowFZallowT)�Entryr r' �find�strip�split�len�lowerr r �unquoter$ r% � rulelines�RuleLine)r �lines�stater& �line�ir r r r K sL zRobotFileParser.parsec C s� | j r d S| j r d S| j s' d St j j t j j | � � } t j j d d | j | j | j | j f � } t j j | � } | s� d } x- | j D]" } | j | � r� | j | � Sq� W| j r� | j j | � Sd S)z=using the parsed robots.txt decide if useragent can fetch urlFTr �/)r r r r r r r1 � urlunparser ZparamsZqueryZfragment�quoter � applies_to� allowancer )r � useragentr Z parsed_urlr& r r r � can_fetch s$ zRobotFileParser.can_fetchc C s d j d d � | j D� � S)Nr c S s g | ] } t | � d � q S)� )�str)�.0r& r r r � <listcomp>� s z+RobotFileParser.__str__.<locals>.<listcomp>)�joinr )r r r r �__str__� s zRobotFileParser.__str__N) �__name__� __module__� __qualname__�__doc__r r r r r r' r r> rD r r r r r s 4 c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) r3 zoA rule line is a single "Allow:" (allowance==True) or "Disallow:" (allowance==False) followed by a path.c C sY | d k r | r d } t j j t j j | � � } t j j | � | _ | | _ d S)Nr T)r r r9 r r: r r< )r r r< r r r r � s zRuleLine.__init__c C s | j d k p | j | j � S)Nr# )r � startswith)r �filenamer r r r; � s zRuleLine.applies_toc C s | j r d n d d | j S)NZAllowZDisallowz: )r< r )r r r r rD � s zRuleLine.__str__N)rE rF rG rH r r; rD r r r r r3 � s r3 c @ sF e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d S) r+ z?An entry has one or more user-agents and zero or more rulelinesc C s g | _ g | _ d S)N)r$ r2 )r r r r r � s zEntry.__init__c C sj g } x' | j D] } | j d | d g � q Wx* | j D] } | j t | � d g � q: Wd j | � S)Nz User-agent: r? r )r$ �extendr2 r@ rC )r Zret�agentr6 r r r rD � s z 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)z2check if this entry applies to the specified agentr8 r r# TF)r. r0 r$ )r r= rL r r r r; � s zEntry.applies_toc C s. x' | j D] } | j | � r | j Sq Wd S)zZPreconditions: - our agent applies to this entry - filename is URL decodedT)r2 r; r< )r rJ r6 r r r r< � s zEntry.allowanceN)rE rF rG rH r rD r; r< r r r r r+ � s r+ )rH Z urllib.parser Zurllib.request�__all__r r3 r+ r r r r �<module> s �