Your IP : 172.28.240.42
| Current Path : /usr/lib/python2.7/ |
|
|
| Current File : //usr/lib/python2.7/robotparser.pyc |
|_c @ s} d Z d d l Z d d l Z d g Z d d d YZ d d d YZ d d
d YZ d e j f d
YZ d S( s< 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
iNt RobotFileParserc B sb e Z d Z d d Z d Z d Z d Z d Z d Z d Z d Z
d
Z RS( ss This class provides a set of methods to read, parse and answer
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( ( s! /usr/lib/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.
( R ( R
( ( s! /usr/lib/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.
iN( t timeR ( R
R ( ( s! /usr/lib/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 ( ( s! /usr/lib/python2.7/robotparser.pyR 1 s c C s t } | j | j } g | D] } | j ^ q" } | j | j | _ | j d k rk t | _ n@ | 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 N( i i (
t URLopenert openR t stript closet errcodet TrueR R t parse( R
t openert ft linet lines( ( s! /usr/lib/python2.7/robotparser.pyt read6 s
c C sA d | j k r- | j d k r= | | _ q= n | j j | d S( Nt *( t
useragentsR R R t append( R
t entry( ( s! /usr/lib/python2.7/robotparser.pyt
_add_entryD s c C s d } d } t } x| D]} | d 7} | s~ | d k rP t } d } q~ | d k r~ | j | t } d } q~ n | j d } | d k r | | } n | j } | s q n | j d d } t | d k r | d j j | d <t j | d j | d <| d d k rk| d k rN| j | t } n | j j
| d d } q| d d k r| d k r| j j
t | d t
d } qq| d d k r| d k r| j j
t | d t d } qqq q W| d k r| j | n d S(
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
user-agentt disallowt allowN( t EntryR# t findR t splitt lent lowert urllibt unquoteR R! t rulelinest RuleLineR R ( R
R t statet
linenumberR" R t i( ( s! /usr/lib/python2.7/robotparser.pyR M sN
c C s | j r
t S| j r t St j t j | } t j d d | j | j | j
| j f } t j | } | 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. t
urlunparseR t paramst queryt fragmentt quoteR t
applies_tot allowanceR ( R
t useragentR t
parsed_urlR" ( ( s! /usr/lib/python2.7/robotparser.pyt can_fetch s c C s- d j g | j D] } t | d ^ q S( NR s
( t joinR t str( R
R" ( ( s! /usr/lib/python2.7/robotparser.pyt __str__ s ( t __name__t
__module__t __doc__R R
R R R R# R R> RA ( ( ( s! /usr/lib/python2.7/robotparser.pyR s 3 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 s; | d k r | r t } n t j | | _ | | _ d S( NR ( R R- R9 R R; ( R
R R; ( ( s! /usr/lib/python2.7/robotparser.pyR s c C s | j d k p | j | j S( NR ( R t
startswith( R
t filename( ( s! /usr/lib/python2.7/robotparser.pyR: s c C s | j r d p d d | j S( Nt Allowt Disallows : ( R; R ( R
( ( s! /usr/lib/python2.7/robotparser.pyRA s ( RB RC RD R R: RA ( ( ( s! /usr/lib/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
( ( s! /usr/lib/python2.7/robotparser.pyR s c C sj g } x' | j D] } | j d | d g q Wx* | j D] } | j t | d g q: Wd j | S( Ns User-agent: s
R ( R t extendR/ R@ R? ( R
t rett agentR ( ( s! /usr/lib/python2.7/robotparser.pyRA 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
R< RK ( ( s! /usr/lib/python2.7/robotparser.pyR: s c C s. x' | j D] } | j | r
| j Sq
Wt S( sZ Preconditions:
- our agent applies to this entry
- filename is URL decoded( R/ R: R; R ( R
RF R ( ( s! /usr/lib/python2.7/robotparser.pyR; s ( RB RC RD R RA R: R; ( ( ( s! /usr/lib/python2.7/robotparser.pyR( s
R c B s# e Z d Z d Z d Z RS( c G s t j j | | d | _ d S( Ni ( R- t FancyURLopenerR R ( R
t args( ( s! /usr/lib/python2.7/robotparser.pyR s c C s d S( N( NN( R ( R
R t realm( ( s! /usr/lib/python2.7/robotparser.pyt prompt_user_passwd s c C s( | | _ t j j | | | | | | S( N( R R- RL t http_error_default( R
R t fpR t errmsgt headers( ( s! /usr/lib/python2.7/robotparser.pyRP s ( RB RC R RO RP ( ( ( s! /usr/lib/python2.7/robotparser.pyR s ( ( ( ( RD R R- t __all__R R0 R( RL R ( ( ( s! /usr/lib/python2.7/robotparser.pyt <module> s $