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Return all distribution names known by an index.
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:return: A list of all known distribution names.
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Initialise an instance.
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For a given project, get a dictionary mapping available versions to Distribution
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For a given project, get a dictionary mapping available versions to Distribution
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Give an url a score which can be used to choose preferred URLs
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Choose one of two URLs where both are candidates for distribution
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See if a URL is a candidate for a download URL for a project (the URL
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Get a digest from a dictionary by looking at a "digests" dictionary
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Update a result dictionary (the final result from _get_project) with a
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Find the most recent distribution which matches the given
requirement.
:param requirement: A requirement of the form 'foo (1.0)' or perhaps
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:param prereleases: If ``True``, allow pre-release versions
to be located. Otherwise, pre-release versions
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:return: A :class:`Distribution` instance, or ``None`` if no such
distribution could be located.
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This locator uses XML-RPC to locate distributions. It therefore
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Initialise an instance.
:param url: The URL to use for XML-RPC.
:param kwargs: Passed to the superclass constructor.
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Return all the distribution names known to this locator.
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This locator uses PyPI's JSON interface. It's very limited in functionality
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Return all the distribution names known to this locator.
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This class represents a scraped HTML page.
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Initialise an instance with the Unicode page contents and the URL they
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Return the URLs of all the links on a page together with information
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c S s, t | \}}}}}}t||t||||fS )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 _hreffinditerr groupdictr r r _clean_resubr r )r5 r rL r| r relr( r* r* r+ links- s
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Page.linksN)r< r= r> r? recompileISXr r rG r r r r* r* r* r+ r s r c s e Zd ZdZejdd dd dZd fdd Zd
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Zdd Zdd Zdd Zdd Zdd Ze dZd 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
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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
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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
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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).
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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
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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?
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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
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C s t |\}}}}}}|| j| j | j r2d}n|| jrJ|| jsJd}nd|| js\d}nR|dkrjd}nD|dkrxd}n6| |rd}n&| ddd } |
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Determine whether a link URL from a referring page and with a
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F)ZhomepageZdownload)Zhttpr[ Zftp:r r Z localhostTz#should_queue: %s (%s) from %s -> %s)
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C s x| j }zy|r| |}|dkr(wxt|jD ]j\}}|| jkr0yB| j| | |s| |||rt d|| | j
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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,
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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
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&$ z SimpleScrapingLocator.get_pagez<a href=[^>]*>([^<]+)<c C sP t }| | j}|s$td| j x&| j|jD ]}||d q4W |S )zJ
Return all the distribution names known to this locator.
zUnable to get %sr ) r r r r _distname_rer r r r )r5 rL r r| r* r* r+ rY 7 s z,SimpleScrapingLocator.get_distribution_names)Nr )r< r= r> r? zlib
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This class locates distributions in a directory tree.
c sN | dd| _tt| jf | tj|}tj|sDt d| || _
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Initialise an instance.
:param path: The root of the directory tree to search.
:param kwargs: Passed to the superclass constructor,
except for:
* recursive - if True (the default), subdirectories are
recursed into. If False, only the top-level directory
is searched,
recursiveTzNot a directory: %rN) r r r r rG r r^ abspathr r base_dir)r5 r^ r )r r* r+ rG H s
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Should a filename be considered as a candidate for a distribution
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is provided, though not used by the current implementation.
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z DirectoryLocator._get_projectc C s t }xt| jD ]x\}}}xd|D ]\}| ||r$tj||}tddttj |dddf}|
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Return all the distribution names known to this locator.
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r c @ s e Zd ZdZdd Zdd ZdS ) JSONLocatora
This locator uses special extended metadata (not available on PyPI) and is
the basis of performant dependency resolution in distlib. Other locators
require archive downloads before dependencies can be determined! As you
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Return all the distribution names known to this locator.
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This locator finds installed distributions in a path. It can be useful for
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Initialise an instance.
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This class allows you to chain and/or merge a list of locators.
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Initialise an instance.
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Return all the distribution names known to this locator.
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Locate dependencies for distributions.
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Initialise an instance, using the specified locator
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Remove a distribution from the finder. This will update internal
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Get a version matcher for a requirement.
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Find the distributions which can fulfill a requirement.
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Attempt to replace one provider with another. This is typically used
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: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
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:return: True if we can replace ``other`` with ``provider``, else
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Find a distribution and all distributions it depends on.
:param requirement: The requirement specifying the distribution to
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: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.
Return a set of :class:`Distribution` instances and a set of
problems.
The distributions returned should be such that they have the
:attr:`required` attribute set to ``True`` if they were
from the ``requirement`` passed to ``find()``, and they have the
:attr:`build_time_dependency` attribute set to ``True`` unless they
are post-installation dependencies of the ``requirement``.
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by any distribution known to the locator.
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