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Editing: heuristics.pyo
� ��abc @ s� d d l Z d d l Z d d l m Z m Z m Z d d l m Z m Z d Z d d � Z d � Z d e f d � � YZ d e f d � � YZ d e f d � � YZ d e f d � � YZ d S( i����N( t formatdatet parsedatet parsedate_tz( t datetimet timedeltas %a, %d %b %Y %H:%M:%S GMTc C s | p t j � } | | S( N( R t now( t deltat date( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt expire_after s c C s t t j | j � � � S( N( R t calendart timegmt timetuple( t dt( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt datetime_to_header s t BaseHeuristicc B s# e Z d � Z d � Z d � Z RS( c C s d S( s! Return a valid 1xx warning header value describing the cache adjustments. The response is provided too allow warnings like 113 http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need to explicitly say response is over 24 hours old. s 110 - "Response is Stale"( ( t selft response( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt warning s c C s i S( s� Update the response headers with any new headers. NOTE: This SHOULD always include some Warning header to signify that the response was cached by the client, not by way of the provided headers. ( ( R R ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt update_headers! s c C sa | j | � } | r] | j j | � | j | � } | d k r] | j j i | d 6� q] n | S( Nt Warning( R t headerst updateR t None( R R t updated_headerst warning_header_value( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt apply* s ( t __name__t __module__R R R ( ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR s t OneDayCachec B s e Z d Z d � Z RS( sM Cache the response by providing an expires 1 day in the future. c C sn i } d | j k rj t | j d � } t t d d � d t | d � �} t | � | d <d | d <n | S( Nt expiresR t daysi i t publics cache-control( R R R R R R ( R R R R R ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR ; s ( R R t __doc__R ( ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR 6 s t ExpiresAfterc B s) e Z d Z d � Z d � Z d � Z RS( s; Cache **all** requests for a defined time period. c K s t | � | _ d S( N( R R ( R t kw( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt __init__L s c C s' t | j � } i t | � d 6d d 6S( NR R s cache-control( R R R ( R R R ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR O s c C s d } | | j S( Ns: 110 - Automatically cached for %s. Response might be stale( R ( R R t tmpl( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR V s ( R R R R# R R ( ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR! G s t LastModifiedc B sM e Z d Z e d d d d d d d d d d d g � Z d � Z d � Z RS( s� If there is no Expires header already, fall back on Last-Modified using the heuristic from http://tools.ietf.org/html/rfc7234#section-4.2.2 to calculate a reasonable value. Firefox also does something like this per https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397 Unlike mozilla we limit this to 24-hr. i� i� i� i� i, i- i� i� i� i� i� c C s8 | j } d | k r i Sd | k r9 | d d k r9 i S| j | j k rO i Sd | k sg d | k rk i St j t | d � � } t | d � } | d k s� | d k r� i St j � } t d | | � } | t j | � } t d t | d d � � } | | k ri S| | } i t j t t j | � � d 6S( NR s cache-controlR R s last-modifiedi i i i i�Q ( R t statust cacheable_by_default_statusesR R R R R t timet maxt mint strftimet TIME_FMTt gmtime( R t respR R t last_modifiedR t current_ageR t freshness_lifetimeR ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR k s* c C s d S( N( R ( R R. ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR � s ( R R R t setR' R R ( ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyR% [ s * ( R R( t email.utilsR R R R R R, R R R t objectR R R! R% ( ( ( sG /usr/lib/python2.7/site-packages/pip/_vendor/cachecontrol/heuristics.pyt <module> s "
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