Edit File: locators.cpython-37.pyc
B :��a�� � @ s2 d dl Z d dlmZ d dlZd dlZd dlZd dlZd dlZy d dlZW n e k rd d dl ZY nX d dl Z ddl m Z ddlmZmZmZmZmZmZmZmZmZmZmZmZm Z m Z ddl m Z m Z m!Z! ddl"m#Z#m$Z$ ddl%m&Z&m'Z'm(Z(m)Z)m*Z*m+Z+m,Z,m-Z- dd l.m/Z/m0Z0 dd l1m2Z2m3Z3 e�4e5�Z6e�7d �Z8e�7d ej9�Z:e�7d �Z;dZ<d,dd�Z=G dd� de�Z>G dd� de?�Z@G dd� de@�ZAG dd� de@�ZBG dd� de?�ZCG dd � d e@�ZDG d d � d e@�ZEG d d � d e@�ZFG d!d"� d"e@�ZGG d#d$� d$e@�ZHeHeF� eDd%d&d'�d(d)�ZIeIjJZJG d*d+� d+e?�ZKdS )-� N)�BytesIO� )�DistlibException)�urljoin�urlparse� urlunparse� url2pathname� pathname2url�queue�quote�unescape� build_opener�HTTPRedirectHandler� text_type�Request� HTTPError�URLError)� Distribution�DistributionPath� make_dist)�Metadata�MetadataInvalidError)�cached_property� ensure_slash�split_filename�get_project_data�parse_requirement�parse_name_and_version� ServerProxy�normalize_name)� get_scheme�UnsupportedVersionError)�Wheel� is_compatiblez^(\w+)=([a-f0-9]+)z;\s*charset\s*=\s*(.*)\s*$z text/html|application/x(ht)?mlzhttps://pypi.org/pypic C s2 | dkr t } t| dd�}z|�� S |d�� X dS )z� Return all distribution names known by an index. :param url: The URL of the index. :return: A list of all known distribution names. Ng @)�timeout�close)� DEFAULT_INDEXr � list_packages)�url�client� r* �A/opt/alt/python37/lib/python3.7/site-packages/distlib/locators.py�get_all_distribution_names) s r, c @ s$ e Zd ZdZdd� Ze Z ZZdS )�RedirectHandlerzE A class to work around a bug in some Python 3.2.x releases. c C s� d }x dD ]}||kr || }P q W |d kr0d S t |�}|jdkrpt|�� |�}t|d�rh|�||� n|||< t�| |||||�S )N)�locationZuri� �replace_header)r �schemer Z get_full_url�hasattrr0 �BaseRedirectHandler�http_error_302) �self�req�fp�code�msg�headersZnewurl�keyZurlpartsr* r* r+ r4 @ s z RedirectHandler.http_error_302N)�__name__� __module__� __qualname__�__doc__r4 Zhttp_error_301Zhttp_error_303Zhttp_error_307r* r* r* r+ r- 7 s r- c @ s� e Zd ZdZdZdZdZdZed Zd)dd �Z d d � Z d d � Z dd� Z dd� Z dd� Zee e�Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd*d'd(�ZdS )+�LocatorzG A base class for locators - things that locate distributions. )z.tar.gzz.tar.bz2z.tarz.zipz.tgzz.tbz)z.eggz.exez.whl)z.pdfN)z.whl�defaultc C s, i | _ || _tt� �| _d| _t�� | _dS )a^ Initialise an instance. :param scheme: Because locators look for most recent versions, they need to know the version scheme to use. This specifies the current PEP-recommended scheme - use ``'legacy'`` if you need to support existing distributions on PyPI. N) �_cacher1 r r- �opener�matcherr �Queue�errors)r5 r1 r* r* r+ �__init__f s zLocator.__init__c C sX g }xN| j �� sRy| j �d�}|�|� W n | j jk rD wY nX | j �� qW |S )z8 Return any errors which have occurred. F)rF �empty�get�appendZEmpty� task_done)r5 �result�er* r* r+ � get_errorsy s zLocator.get_errorsc C s | � � dS )z> Clear any errors which may have been logged. N)rN )r5 r* r* r+ � clear_errors� s zLocator.clear_errorsc C s | j �� d S )N)rB �clear)r5 r* r* r+ � clear_cache� s zLocator.clear_cachec C s | j S )N)�_scheme)r5 r* r* r+ � _get_scheme� s zLocator._get_schemec C s || _ d S )N)rR )r5 �valuer* r* r+ � _set_scheme� s zLocator._set_schemec C s t d��dS )a= For a given project, get a dictionary mapping available versions to Distribution instances. This should be implemented in subclasses. If called from a locate() request, self.matcher will be set to a matcher for the requirement to satisfy, otherwise it will be None. z Please implement in the subclassN)�NotImplementedError)r5 �namer* r* r+ � _get_project� s zLocator._get_projectc C s t d��dS )zJ Return all the distribution names known to this locator. z Please implement in the subclassN)rV )r5 r* r* r+ �get_distribution_names� s z Locator.get_distribution_namesc C sL | j dkr| �|�}n2|| j kr,| j | }n | �� | �|�}|| j |< |S )z� For a given project, get a dictionary mapping available versions to Distribution instances. This calls _get_project to do all the work, and just implements a caching layer on top. N)rB rX rO )r5 rW rL r* r* r+ � get_project� s zLocator.get_projectc C s^ t |�}t�|j�}d}|�d�}|�| j�}|rBtt|�| j�}|j dkd|j k||||fS )zu Give an url a score which can be used to choose preferred URLs for a given project release. Tz.whl�httpszpypi.org) r � posixpath�basename�path�endswith�downloadable_extensionsr# r" � wheel_tagsr1 �netloc)r5 r( �tr] Z compatibleZis_wheelZis_downloadabler* r* r+ � score_url� s zLocator.score_urlc C sR |}|rN| � |�}| � |�}||kr(|}||kr@t�d||� nt�d||� |S )a{ Choose one of two URLs where both are candidates for distribution archives for the same version of a distribution (for example, .tar.gz vs. zip). The current implementation favours https:// URLs over http://, archives from PyPI over those from other locations, wheel compatibility (if a wheel) and then the archive name. zNot replacing %r with %rzReplacing %r with %r)rd �logger�debug)r5 �url1�url2rL �s1�s2r* r* r+ � prefer_url� s zLocator.prefer_urlc C s t ||�S )zZ Attempt to split a filename in project name, version and Python version. )r )r5 �filename� project_namer* r* r+ r � s zLocator.split_filenamec C s dd� }d}t |�\}}}}} } | �� �d�r<t�d|| � t�| �} | rX| �� \} } nd\} } |}|r�|d dkr�|dd� }|�d ��r>y~t |�}t || j �s�t�d |� nX|dkr�d }n ||j |�}|�r|j |j |jt||||| d f�d �dd� |jD ��d�}W n0 tk �r: } zt�d|� W dd}~X Y nX n�|�| j��sZt�d|� n�t�|� }}x�| jD ]�}|�|��rp|dt|� � }| �||�}|�s�t�d|� nH|\}}}|�r�|||��r�|||t||||| d f�d�}|�r�||d< P �qpW |�r| �r| |d| < |S )a See if a URL is a candidate for a download URL for a project (the URL has typically been scraped from an HTML page). If it is, a dictionary is returned with keys "name", "version", "filename" and "url"; otherwise, None is returned. c S s t | �t |�kS )N)r )Zname1Zname2r* r* r+ � same_project� s z:Locator.convert_url_to_download_info.<locals>.same_projectNzegg=z %s: version hint in fragment: %r)NN����/z.whlzWheel not compatible: %sTr/ z, c S s" g | ]}d � t|dd� ���qS )�.� N)�join�list)�.0�vr* r* r+ � <listcomp> s z8Locator.convert_url_to_download_info.<locals>.<listcomp>)rW �versionrl r( zpython-versionzinvalid path for wheel: %szNot downloadable: %sz No match for project/version: %s)rW rx rl r( zpython-versionz %s_digest)r �lower� startswithre rf � HASHER_HASH�match�groupsr_ r" r# ra rW rx rl r rs �pyver� Exception�warningr` r\ r] �lenr )r5 r( rm rn rL r1 rb r^ �params�query�frag�m�algo�digestZorigpath�wheel�includerM rl �extrc rW rx r~ r* r* r+ � convert_url_to_download_info� sj z$Locator.convert_url_to_download_infoc C sl d}d|kr8|d }x"dD ]}||kr||| f}P qW |shx*dD ]"}d| }||krB||| f}P qBW |S )z� Get a digest from a dictionary by looking at a "digests" dictionary or keys of the form 'algo_digest'. 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N�digests)Zsha256�md5z %s_digestr* )r5 �inforL r� r� r; r* r* r+ � _get_digest1 s zLocator._get_digestc C s� |� d�}|� d�}||kr,|| }|j}nt||| jd�}|j}| �|� |_}|d }||d |< |j|d kr�| �|j|�|_|d �|t � �� |� | |_ |||< dS )z� Update a result dictionary (the final result from _get_project) with a dictionary for a specific version, which typically holds information gleaned from a filename or URL for an archive for the distribution. rW rx )r1 r( r� �urlsN) �pop�metadatar r1 r� r� � source_urlrk � setdefault�set�add�locator) r5 rL r� rW rx �dist�mdr� r( r* r* r+ �_update_version_dataH s z Locator._update_version_dataFc C s� d}t |�}|dkr td| ��t| j�}|�|j� | _}t�d|t|�j � | � |j �}t |�dk�rg }|j } xb|D ]Z} | dkr�qzy(|�| �s�n|s�| | �js�|�| � W qz tk r� t�d|| � Y qzX qzW t |�dkr�t||jd�}|�rt�d |� |d } || }|�r�|j�r*|j|_|�d i ��| t� �|_i } |�d i �} x&|jD ] }|| k�rZ| | | |< �qZW | |_d| _|S ) a Find the most recent distribution which matches the given requirement. :param requirement: A requirement of the form 'foo (1.0)' or perhaps 'foo (>= 1.0, < 2.0, != 1.3)' :param prereleases: If ``True``, allow pre-release versions to be located. Otherwise, pre-release versions are not returned. :return: A :class:`Distribution` instance, or ``None`` if no such distribution could be located. NzNot a valid requirement: %rzmatcher: %s (%s)rr )r� r� zerror matching %s with %rr )r; zsorted list: %sro r� r� )r r r r1 rD � requirementre rf �typer< rZ rW r� Z version_classr| Z is_prereleaserJ r r� �sortedr; ZextrasrI r� � download_urlsr� )r5 r� � prereleasesrL �rr1 rD �versionsZslistZvcls�krx �d�sdr( r* r* r+ �locate_ sP zLocator.locate)rA )F)r< r= r> r? �source_extensions�binary_extensions�excluded_extensionsra r` rG rN rO rQ rS rU �propertyr1 rX rY rZ rd rk r r� r� r� r� r* r* r* r+ r@ V s. Jr@ c s0 e Zd ZdZ� fdd�Zdd� Zdd� Z� ZS )�PyPIRPCLocatorz� This locator uses XML-RPC to locate distributions. It therefore cannot be used with simple mirrors (that only mirror file content). c s* t t| �jf |� || _t|dd�| _dS )z� Initialise an instance. :param url: The URL to use for XML-RPC. :param kwargs: Passed to the superclass constructor. g @)r$ N)�superr� rG �base_urlr r) )r5 r( �kwargs)� __class__r* r+ rG � s zPyPIRPCLocator.__init__c C s t | j�� �S )zJ Return all the distribution names known to this locator. )r� r) r' )r5 r* r* r+ rY � s z%PyPIRPCLocator.get_distribution_namesc C s i i d�}| j �|d�}x�|D ]�}| j �||�}| j �||�}t| jd�}|d |_|d |_|�d�|_ |�dg �|_ |�d�|_ t |�}|r |d } | d |_ | �| �|_| |_|||< xB|D ]:} | d } | �| �} |d �|t� ��| � | |d | < q�W q W |S ) N)r� r� T)r1 rW rx �license�keywords�summaryr r( r� r� )r) Zpackage_releasesZ release_urlsZ release_datar r1 rW rx rI r� r� r� r r� r� r� r� r� r� r� ) r5 rW rL r� rv r� �datar� r� r� r( r� r* r* r+ rX � s0 zPyPIRPCLocator._get_project)r< r= r> r? rG rY rX � __classcell__r* r* )r� r+ r� � s r� c s0 e Zd ZdZ� fdd�Zdd� Zdd� Z� ZS )�PyPIJSONLocatorzw This locator uses PyPI's JSON interface. It's very limited in functionality and probably not worth using. c s t t| �jf |� t|�| _d S )N)r� r� rG r r� )r5 r( r� )r� r* r+ rG � s zPyPIJSONLocator.__init__c C s t d��dS )zJ Return all the distribution names known to this locator. z Not available from this locatorN)rV )r5 r* r* r+ rY � s z&PyPIJSONLocator.get_distribution_namesc C s i i d�}t | jdt|� �}�y�| j�|�}|�� �� }t�|�}t | j d�}|d }|d |_ |d |_ |� d�|_|� dg �|_|� d �|_t|�}| |_|d } |||j < x`|d D ]T} | d }|j�|� | �| �|j|< |d �|j t� ��|� | �| �|d |< q�W x�|d �� D ]�\} } | |j k�r:�q"t | j d�} |j | _ | | _ t| �}| |_||| < x\| D ]T} | d }|j�|� | �| �|j|< |d �| t� ��|� | �| �|d |< �qpW �q"W W n@ tk �r } z | j� t |�� t � d|� W d d }~X Y nX |S )N)r� r� z%s/json)r1 r� rW rx r� r� r� r� r( r� ZreleaseszJSON fetch failed: %s) r r� r rC �open�read�decode�json�loadsr r1 rW rx rI r� r� r� r r� r� r� r� r� r� r� �itemsr rF �putr re � exception)r5 rW rL r( �respr� r� r� r� r� r� rx ZinfosZomd�odistrM r* r* r+ rX � sT " z PyPIJSONLocator._get_project)r< r= r> r? rG rY rX r� r* r* )r� r+ r� � s r� c @ s` e Zd ZdZe�dejejB ejB �Z e�dejejB �Z dd� Z e�dej�Z e dd� �Zd S ) �Pagez4 This class represents a scraped HTML page. z� (rel\s*=\s*(?:"(?P<rel1>[^"]*)"|'(?P<rel2>[^']*)'|(?P<rel3>[^>\s ]*))\s+)? href\s*=\s*(?:"(?P<url1>[^"]*)"|'(?P<url2>[^']*)'|(?P<url3>[^>\s ]*)) (\s+rel\s*=\s*(?:"(?P<rel4>[^"]*)"|'(?P<rel5>[^']*)'|(?P<rel6>[^>\s ]*)))? z!<base\s+href\s*=\s*['"]?([^'">]+)c C s4 || _ | | _| _| j�| j �}|r0|�d�| _dS )zk Initialise an instance with the Unicode page contents and the URL they came from. r N)r� r� r( �_base�search�group)r5 r� r( r� r* r* r+ rG s z Page.__init__z[^a-z0-9$&+,/:;=?@.#%_\\|-]c C s� dd� }t � }x�| j�| j�D ]�}|�d�}|d pZ|d pZ|d pZ|d pZ|d pZ|d }|d pr|d pr|d }t| j|�}t|�}| j� d d� |�}|� ||f� q W t |dd� dd�}|S )z� Return the URLs of all the links on a page together with information about their "rel" attribute, for determining which ones to treat as downloads and which ones to queue for further scraping. c S s, t | �\}}}}}}t||t|�|||f�S )zTidy up an URL.)r r r )r( r1 rb r^ r� r� r� r* r* r+ �clean4 s zPage.links.<locals>.cleanr/ Zrel1Zrel2Zrel3Zrel4Zrel5Zrel6rg rh Zurl3c S s dt | �d�� S )Nz%%%2xr )�ordr� )r� r* r* r+ �<lambda>B � z Page.links.<locals>.<lambda>c S s | d S )Nr r* )rc r* r* r+ r� F r� T)r; �reverse) r� �_href�finditerr� � groupdictr r� r � _clean_re�subr� r� )r5 r� rL r| r� �relr( r* r* r+ �links- s z Page.linksN)r< r= r> r? �re�compile�I�S�Xr� r� rG r� r r� r* r* r* r+ r� s r� c s� e Zd ZdZejdd� dd� d�Zd � fdd � Zd d � Zd d � Z dd� Z e � de j �Zdd� Zdd� Zdd� Zdd� Zdd� Ze � d�Zd d � Z� ZS ) �SimpleScrapingLocatorz� A locator which scrapes HTML pages to locate downloads for a distribution. This runs multiple threads to do the I/O; performance is at least as good as pip's PackageFinder, which works in an analogous fashion. c C s t jt| �d��� S )N)�fileobj)�gzipZGzipFiler r� )�br* r* r+ r� T r� z SimpleScrapingLocator.<lambda>c C s | S )Nr* )r� r* r* r+ r� U r� )�deflater� ZnoneN� c sl t t| �jf |� t|�| _|| _i | _t� | _t � � | _ t� | _ d| _ || _t�� | _t�� | _d| _dS )a� Initialise an instance. :param url: The root URL to use for scraping. :param timeout: The timeout, in seconds, to be applied to requests. This defaults to ``None`` (no timeout specified). :param num_workers: The number of worker threads you want to do I/O, This defaults to 10. :param kwargs: Passed to the superclass. FN)r� r� rG r r� r$ � _page_cacher� �_seenr rE � _to_fetch� _bad_hosts�skip_externals� num_workers� threading�RLock�_lock�_gplock�platform_check)r5 r( r$ r� r� )r� r* r+ rG X s z SimpleScrapingLocator.__init__c C sF g | _ x:t| j�D ],}tj| jd�}d|_|�� | j �|� qW dS )z� Threads are created only when get_project is called, and terminate before it returns. They are there primarily to parallelise I/O (i.e. fetching web pages). )�targetTN) �_threads�ranger� r� �Thread�_fetch�daemon�startrJ )r5 �irc r* r* r+ �_prepare_threadss s z&SimpleScrapingLocator._prepare_threadsc C s> x| j D ]}| j�d� qW x| j D ] }|�� q$W g | _ dS )zu Tell all the threads to terminate (by sending a sentinel value) and wait for them to do so. N)r� r� r� rs )r5 rc r* r* r+ � _wait_threads� s z#SimpleScrapingLocator._wait_threadsc C s� i i d�}| j �x || _|| _t| jdt|� �}| j�� | j�� | � � z&t � d|� | j � |� | j �� W d | �� X | `W d Q R X |S )N)r� r� z%s/z Queueing %s)r� rL rm r r� r r� rP r� r� re rf r� r� rs r� )r5 rW rL r( r* r* r+ rX � s z"SimpleScrapingLocator._get_projectz<\b(linux_(i\d86|x86_64|arm\w+)|win(32|_amd64)|macosx_?\d+)\bc C s | j �|�S )zD Does an URL refer to a platform-specific download? )�platform_dependentr� )r5 r( r* r* r+ �_is_platform_dependent� s z,SimpleScrapingLocator._is_platform_dependentc C sZ | j r| �|�rd}n| �|| j�}t�d||� |rV| j� | �| j|� W dQ R X |S )a% See if an URL is a suitable download for a project. If it is, register information in the result dictionary (for _get_project) about the specific version it's for. Note that the return value isn't actually used other than as a boolean value. Nzprocess_download: %s -> %s) r� r� r� rm re rf r� r� rL )r5 r( r� r* r* r+ �_process_download� s z'SimpleScrapingLocator._process_downloadc C s� t |�\}}}}}}|�| j| j | j �r2d}n|| jrJ|�| j�sJd}nd|�| j�s\d}nR|dkrjd}nD|dkrxd}n6| �|�r�d}n&|� dd�d } | � � dkr�d}nd}t � d ||||� |S ) z� Determine whether a link URL from a referring page and with a particular "rel" attribute should be queued for scraping. F)ZhomepageZdownload)Zhttpr[ Zftp�:r r Z localhostTz#should_queue: %s (%s) from %s -> %s) r r_ r� r� r� r� rz r� r� �splitry re rf ) r5 �linkZreferrerr� r1 rb r^ �_rL �hostr* r* r+ � _should_queue� s* z#SimpleScrapingLocator._should_queuec C s� x�| j �� }z�y�|r�| �|�}|dkr(wxt|jD ]j\}}|| jkr0yB| j�|� | �|�s�| �|||�r�t� d||� | j � |� W q0 t k r� Y q0X q0W W n2 t k r� } z| j � t|�� W dd}~X Y nX W d| j �� X |sP qW dS )z� Get a URL to fetch from the work queue, get the HTML page, examine its links for download candidates and candidates for further scraping. This is a handy method to run in a thread. NzQueueing %s from %s)r� rI �get_pager� r� r� r� r� re rf r� r r rF r rK )r5 r( �pager� r� rM r* r* r+ r� � s, & z SimpleScrapingLocator._fetchc C sX t |�\}}}}}}|dkr:tj�t|��r:tt|�d�}|| jkr`| j| }t� d||� �n�|� dd�d }d}|| j kr�t� d||� �n�t |d d id �}�z�y�t� d |� | j j|| jd �} t� d|� | �� } | �dd�} t�| ��r�| �� } | �� } | �d�}|�r"| j| }|| �} d}t�| �}|�r@|�d�}y| �|�} W n tk �rn | �d�} Y nX t | | �}|| j| < W n� t k �r� } z |j dk�r�t� d||� W dd}~X Y n� t k �r } z0t� d||� | j!� | j �"|� W dQ R X W dd}~X Y n2 t#k �rB } zt� d||� W dd}~X Y nX W d|| j|< X |S )a Get the HTML for an URL, possibly from an in-memory cache. XXX TODO Note: this cache is never actually cleared. It's assumed that the data won't get stale over the lifetime of a locator instance (not necessarily true for the default_locator). �filez index.htmlzReturning %s from cache: %sr� r r Nz Skipping %s due to bad host %szAccept-encodingZidentity)r: z Fetching %s)r$ z Fetched %sz Content-Typer/ zContent-Encodingzutf-8zlatin-1i� zFetch failed: %s: %s)$r �osr^ �isdirr r r r� re rf r� r� r rC r� r$ r� rI �HTML_CONTENT_TYPEr| Zgeturlr� �decoders�CHARSETr� r� r� � UnicodeErrorr� r r8 r� r r� r� r )r5 r( r1 rb r^ r� rL r� r6 r� r: � content_typeZ final_urlr� �encoding�decoderr� rM r* r* r+ r� � sZ &$ z SimpleScrapingLocator.get_pagez<a href=[^>]*>([^<]+)<c C sP t � }| �| j�}|s$td| j ��x&| j�|j�D ]}|�|�d�� q4W |S )zJ Return all the distribution names known to this locator. zUnable to get %sr ) r� r� r� r � _distname_rer� r� r� r� )r5 rL r� r| r* r* r+ rY 7 s z,SimpleScrapingLocator.get_distribution_names)Nr� )r< r= r> r? �zlib� decompressr� rG r� r� rX r� r� r� r� r� r� r� r� r� r rY r� r* r* )r� r+ r� J s" !; r� c s8 e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Z� ZS ) �DirectoryLocatorz? This class locates distributions in a directory tree. c sN |� dd�| _tt| �jf |� tj�|�}tj�|�sDt d| ��|| _ dS )a� Initialise an instance. :param path: The root of the directory tree to search. :param kwargs: Passed to the superclass constructor, except for: * recursive - if True (the default), subdirectories are recursed into. If False, only the top-level directory is searched, � recursiveTzNot a directory: %rN) r� r r� r rG r� r^ �abspathr� r �base_dir)r5 r^ r� )r� r* r+ rG H s zDirectoryLocator.__init__c C s |� | j�S )z� Should a filename be considered as a candidate for a distribution archive? 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N)r� r rG � isinstancer �AssertionError�distpath)r5 r r� )r� r* r+ rG � s zDistPathLocator.__init__c C sP | j �|�}|d kr i i d�}n,|j|d|jt|jg�id|jtd g�ii}|S )N)r� r� r� r� )r Zget_distributionrx r� r� )r5 rW r� rL r* r* r+ rX � s z DistPathLocator._get_project)r< r= r> r? rG rX r� r* r* )r� r+ r � s r c sR e Zd ZdZ� fdd�Z� fdd�Zdd� Zeej j e�Z dd � Z d d � Z � Z S ) �AggregatingLocatorzI This class allows you to chain and/or merge a list of locators. c s* |� dd�| _|| _tt| �jf |� dS )a� Initialise an instance. :param locators: The list of locators to search. :param kwargs: Passed to the superclass constructor, except for: * merge - if False (the default), the first successful search from any of the locators is returned. If True, the results from all locators are merged (this can be slow). �mergeFN)r� r �locatorsr� r rG )r5 r r� )r� r* r+ rG � s zAggregatingLocator.__init__c s* t t| ��� x| jD ] }|�� qW d S )N)r� r rQ r )r5 r� )r� r* r+ rQ � s z AggregatingLocator.clear_cachec C s || _ x| jD ] }||_qW d S )N)rR r r1 )r5 rT r� r* r* r+ rU � s z AggregatingLocator._set_schemec C s� i }x�| j D ]�}|�|�}|r | jr�|�di �}|�di �}|�|� |�d�}|r�|r�x6|�� D ]*\}} ||kr�|| | O < qb| ||< qbW |�d�} |r�| r�| �|� q | jd kr�d} n$d} x |D ]}| j�|�r�d} P q�W | r |}P q W |S )Nr� r� TF)r rZ r rI �updater� rD r| ) r5 rW rL r� r� r r� Zdfr� rv �dd�foundr* r* r+ rX � s8 z AggregatingLocator._get_projectc C s@ t � }x4| jD ]*}y||�� O }W q tk r6 Y qX qW |S )zJ Return all the distribution names known to this locator. )r� r rY rV )r5 rL r� r* r* r+ rY s z)AggregatingLocator.get_distribution_names)r< r= r> r? rG rQ rU r� r@ r1 �fgetrX rY r� r* r* )r� r+ r � s ,r zhttps://pypi.org/simple/g @)r$ Zlegacy)r1 c @ sL e Zd ZdZddd�Zdd� Zdd� Zd d � Zd d � Zd d� Z ddd�Z dS )�DependencyFinderz0 Locate dependencies for distributions. Nc C s |pt | _t| jj�| _dS )zf Initialise an instance, using the specified locator to locate distributions. N)�default_locatorr� r r1 )r5 r� r* r* r+ rG / s zDependencyFinder.__init__c C sv t �d|� |j}|| j|< || j||jf< xD|jD ]:}t|�\}}t �d|||� | j� |t � �� ||f� q4W dS )z� Add a distribution to the finder. This will update internal information about who provides what. :param dist: The distribution to add. zadding distribution %szAdd to provided: %s, %s, %sN) re rf r; � dists_by_name�distsrx �providesr �providedr� r� r� )r5 r� rW �prx r* r* r+ �add_distribution7 s z!DependencyFinder.add_distributionc C s| t �d|� |j}| j|= | j||jf= xN|jD ]D}t|�\}}t �d|||� | j| }|� ||f� |s0| j|= q0W dS )z� Remove a distribution from the finder. This will update internal information about who provides what. :param dist: The distribution to remove. zremoving distribution %sz Remove from provided: %s, %s, %sN) re rf r; r# r$ rx r% r r& �remove)r5 r� rW r' rx �sr* r* r+ �remove_distributionF s z$DependencyFinder.remove_distributionc C sB y| j �|�}W n, tk r< |�� d }| j �|�}Y nX |S )z� Get a version matcher for a requirement. :param reqt: The requirement :type reqt: str :return: A version matcher (an instance of :class:`distlib.version.Matcher`). r )r1 rD r! r� )r5 �reqtrD rW r* r* r+ � get_matcherX s z DependencyFinder.get_matcherc C sv | � |�}|j}t� }| j}||krrxL|| D ]@\}}y|�|�}W n tk r\ d}Y nX |r.|�|� P q.W |S )z� Find the distributions which can fulfill a requirement. :param reqt: The requirement. :type reqt: str :return: A set of distribution which can fulfill the requirement. F)r- r; r� r& r| r! r� ) r5 r, rD rW rL r& rx �providerr| r* r* r+ �find_providersh s z DependencyFinder.find_providersc C s� | j | }t� }x,|D ]$}| �|�}|�|j�s|�|� qW |r^|�d||t|�f� d}nD| �|� | j |= x"|D ]}| j �|t� ��|� qvW | � |� d}|S )a� Attempt to replace one provider with another. This is typically used when resolving dependencies from multiple sources, e.g. A requires (B >= 1.0) while C requires (B >= 1.1). For successful replacement, ``provider`` must meet all the requirements which ``other`` fulfills. :param provider: The provider we are trying to replace with. :param other: The provider we're trying to replace. :param problems: If False is returned, this will contain what problems prevented replacement. This is currently a tuple of the literal string 'cantreplace', ``provider``, ``other`` and the set of requirements that ``provider`` couldn't fulfill. :return: True if we can replace ``other`` with ``provider``, else False. Z cantreplaceFT) �reqtsr� r- r| rx r� � frozensetr+ r� r( ) r5 r. �other�problemsZrlistZ unmatchedr* rD rL r* r* r+ �try_to_replace� s" z DependencyFinder.try_to_replaceFc C s i | _ i | _i | _i | _t|p g �}d|krH|�d� |tdddg�O }t|t�rh| }}t� d|� n4| j j ||d� }}|dkr�t d| ��t� d |� d |_ t� }t|g�}t|g�}�x�|�r�|�� }|j} | | jkr�| �|� n"| j| } | |k�r | �|| |� |j|jB } |j} t� } |�rh||k�rhx2d D ]*}d | }||k�r:| t|d | �O } �q:W | | B | B }�x<|D �]2}| �|�}|�sRt� d|� | j j ||d�}|dk�r�|�s�| j j |d d�}|dk�r�t� d|� |�d|f� n^|j|j }}||f| jk�r |�|� |�|� || k�rR||k�rR|�|� t� d|j� xZ|D ]R}|j} | | jk�r�| j�|t� ��|� n"| j| } | |k�rX| �|| |� �qXW �q|W q�W t| j�� �}x.|D ]&}||k|_ |j �r�t� d|j� �q�W t� d|� ||fS )a� Find a distribution and all distributions it depends on. :param requirement: The requirement specifying the distribution to find, or a Distribution instance. :param meta_extras: A list of meta extras such as :test:, :build: and so on. :param prereleases: If ``True``, allow pre-release versions to be returned - otherwise, don't return prereleases unless they're all that's available. 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