Your IP : 3.137.149.111
3
\�" � @ s\ d Z ddlZddlZddlZdgZejdd�ZG dd� d�ZG dd� d�Z G d d
� d
�Z
dS ) 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�RobotFileParser� RequestRatezrequests secondsc @ sj e Zd ZdZddd�Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dd� Z
dd� Z dd� Z dd� Z
dd� ZdS )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
�*/usr/lib64/python3.6/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 ddl }|j � | _dS )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 s& || _ tjj|�dd� \| _| _dS )z,Sets the URL referring to a robots.txt file.� � N)r �urllib�parse�urlparse�host�path)r r r
r
r r 5 s zRobotFileParser.set_urlc C s� yt jj| j�}W nR t jjk
rd } z2|jdkr:d| _n|jdkrT|jdk rTd| _W Y dd}~X n X |j � }| j
|j d�j � � dS ) 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 : s
zRobotFileParser.readc C s, d|j kr | jd kr(|| _n | jj|� d S )N�*)�
useragentsr r �append)r �entryr
r
r �
_add_entryG s
zRobotFileParser._add_entryc C s6 d}t � }| j� �x|D �]�}|sT|dkr8t � }d}n |dkrT| j|� t � }d}|jd�}|dkrr|d|� }|j� }|s�q|jdd�}t|�dkr|d j� j� |d< tj j
|d j� �|d< |d dk�r |dkr�| j|� t � }|j j |d � d}q|d dk�r4|dk�r|j
j t|d d �� d}q|d d
k�rh|dk�r|j
j t|d d �� d}q|d d k�r�|dk�r|d j� j� �r�t|d �|_d}q|d d
kr|dkr|d jd�}t|�dk�r|d j� j� �r|d j� j� �rtt|d �t|d ��|_d}qW |dk�r2| j|� dS )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-agentZdisallowFZallowTz crawl-delayz request-rate�/)�Entryr r( �find�strip�split�len�lowerr r �unquoter% r& � rulelines�RuleLine�isdigit�int�delayr �req_rate)r �lines�stater' �line�iZnumbersr
r
r r P sd
zRobotFileParser.parsec C s� | j r
dS | jrdS | js dS tjjtjj|��}tjjdd|j|j |j
|j f�}tjj |�}|sfd}x"| j
D ]}|j|�rn|j|�S qnW | jr�| jj|�S dS )z=using the parsed robots.txt decide if useragent can fetch urlFTr r, )r r r
r r r r3 �
urlunparser ZparamsZqueryZfragment�quoter �
applies_to� allowancer )r � useragentr Z
parsed_urlr' r
r
r � can_fetch� s$
zRobotFileParser.can_fetchc C s4 | j � s d S x | jD ]}|j|�r|jS qW | jjS )N)r r r@ r8 r )r rB r' r
r
r � crawl_delay� s
zRobotFileParser.crawl_delayc C s4 | j � s d S x | jD ]}|j|�r|jS qW | jjS )N)r r r@ r9 r )r rB r' r
r
r � request_rate� s
z RobotFileParser.request_ratec C s0 | j }| jd k r || jg }djtt|��d S )N�
)r r �join�map�str)r r r
r
r �__str__� s
zRobotFileParser.__str__N)r )�__name__�
__module__� __qualname__�__doc__r r r r r r( r rC rD rE rJ r
r
r
r r s
C c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) r5 zoA rule line is a single "Allow:" (allowance==True) or "Disallow:"
(allowance==False) followed by a path.c C s> |dkr| rd}t jjt jj|��}t jj|�| _|| _d S )Nr T)r r r> r r? r rA )r r rA r
r
r r � s
zRuleLine.__init__c C s | j dkp|j| j �S )Nr$ )r �
startswith)r �filenamer
r
r r@ � s zRuleLine.applies_toc C s | j r
dndd | j S )NZAllowZDisallowz: )rA r )r r
r
r rJ � s zRuleLine.__str__N)rK rL rM rN r r@ rJ r
r
r
r r5 � s r5 c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
S ) r- z?An entry has one or more user-agents and zero or more rulelinesc C s g | _ g | _d | _d | _d S )N)r% r4 r8 r9 )r r
r
r r � s zEntry.__init__c C s� g }x | j D ]}|jd|� �� q W | jd k r@|jd| j� �� | jd k rj| j}|jd|j� d|j� �� |jtt| j �� |jd� dj
|�S )Nz User-agent: z
Crawl-delay: zRequest-rate: r, r rF ) r% r& r8 r9 ZrequestsZseconds�extendrH rI r4 rG )r Zret�agentZrater
r
r rJ � s
z
Entry.__str__c C sF |j d�d j� }x.| jD ]$}|dkr*dS |j� }||krdS qW dS )z2check if this entry applies to the specified agentr, r r$ TF)r0 r2 r% )r rB rR r
r
r r@ � s zEntry.applies_toc C s$ x | j D ]}|j|�r|jS qW dS )zZPreconditions:
- our agent applies to this entry
- filename is URL decodedT)r4 r@ rA )r rP r< r
r
r rA � s
zEntry.allowanceN)rK rL rM rN r rJ r@ rA r
r
r
r r- � s
r- ) rN � collectionsZ urllib.parser Zurllib.request�__all__�
namedtupler r r5 r- r
r
r
r �<module> s 2