B ��Re��@s�ddlZddlZddlmZmZmZddlmZmZdZddd�Z dd�Z Gd d �d e�ZGdd�de�Z Gd d�de�ZGdd�de�ZdS)�N)� formatdate� parsedate�parsedate_tz)�datetime� timedeltaz%a, %d %b %Y %H:%M:%S GMTcCs|p t��}||S)N)r�utcnow)�delta�date�r ��/builddir/build/BUILDROOT/alt-python37-pip-20.2.4-6.el8.x86_64/opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/cachecontrol/heuristics.py�expire_aftersrcCstt�|��S)N)r�calendar�timegm� timetuple)�dtr r r�datetime_to_headersrc@s$eZdZdd�Zdd�Zdd�ZdS)� BaseHeuristiccCsdS)a! Return a valid 1xx warning header value describing the cache adjustments. The response is provided too allow warnings like 113 http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need to explicitly say response is over 24 hours old. z110 - "Response is Stale"r )�self�responser r r�warnings zBaseHeuristic.warningcCsiS)z�Update the response headers with any new headers. NOTE: This SHOULD always include some Warning header to signify that the response was cached by the client, not by way of the provided headers. r )rrr r r�update_headers!szBaseHeuristic.update_headerscCs@|�|�}|r<|j�|�|�|�}|dk r<|j�d|i�|S)N�Warning)r�headers�updater)rrZupdated_headersZwarning_header_valuer r r�apply*s zBaseHeuristic.applyN)�__name__� __module__�__qualname__rrrr r r rrs rc@seZdZdZdd�ZdS)�OneDayCachezM Cache the response by providing an expires 1 day in the future. cCsRi}d|jkrNt|jd�}ttdd�t|dd��d�}t|�|d<d|d<|S) N�expiresr �)�days�)r �publicz cache-control)rrrrrr)rrrr rr r rr<s zOneDayCache.update_headersN)rrr�__doc__rr r r rr6src@s(eZdZdZdd�Zdd�Zdd�ZdS) �ExpiresAfterz; Cache **all** requests for a defined time period. cKstf|�|_dS)N)rr)r�kwr r r�__init__LszExpiresAfter.__init__cCst|j�}t|�dd�S)Nr#)rz cache-control)rrr)rrrr r rrOs zExpiresAfter.update_headerscCsd}||jS)Nz:110 - Automatically cached for %s. Response might be stale)r)rr�tmplr r rrSszExpiresAfter.warningN)rrrr$r'rrr r r rr%Gsr%c@s:eZdZdZdddddddd d ddhZd d�Zdd�ZdS)�LastModifieda� 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�c Cs�|j}d|kriSd|kr*|ddkr*iS|j|jkr:iSd|ksJd|krNiSt�t|d��}t|d�}|dks||dkr�iSt��}td||�}|t�|�}tdt |dd��}||kr�iS||} dt� tt�| ��iS) Nrz cache-controlr#r z last-modifiedr� i�Q) r�status�cacheable_by_default_statusesr rrr�time�max�min�strftime�TIME_FMT�gmtime) r�resprr Z last_modified�now�current_ager�freshness_lifetimerr r rrhs*zLastModified.update_headerscCsdS)Nr )rr7r r rr�szLastModified.warningN)rrrr$r0rrr r r rr)Xsr))N)r r1�email.utilsrrrrrr5rr�objectrrr%r)r r r r�s "