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n$# t $ r}||| < |rY d}~Y d}~ nd}~ww xY wt | }| ||fS )as Find all activatable distributions in `plugin_env`
Example usage::
distributions, errors = working_set.find_plugins(
Environment(plugin_dirlist)
)
# add plugins+libs to sys.path
map(working_set.add, distributions)
# display errors
print('Could not load', errors)
The `plugin_env` should be an ``Environment`` instance that contains
only distributions that are in the project's "plugin directory" or
directories. The `full_env`, if supplied, should be an ``Environment``
contains all currently-available distributions. If `full_env` is not
supplied, one is created automatically from the ``WorkingSet`` this
method is called on, which will typically mean that every directory on
``sys.path`` will be scanned for distributions.
`installer` is a standard installer callback as used by the
``resolve()`` method. The `fallback` flag indicates whether we should
attempt to resolve older versions of a plugin if the newest version
cannot be resolved.
This method returns a 2-tuple: (`distributions`, `error_info`), where
`distributions` is a list of the distributions found in `plugin_env`
that were loadable, along with any other distributions that are needed
to resolve their dependencies. `error_info` is a dictionary mapping
unloadable plugin distributions to an exception instance describing the
error that occurred. Usually this will be a ``DistributionNotFound`` or
``VersionConflict`` instance.
N)
r sortr r r mapr as_requirementr ro dictfromkeysr )r r r r r plugin_projects
error_info
distributionsr
shadow_setr r r resolveesrb sorted_distributionss rK r zWorkingSet.find_plugins s X z** 46
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D-D((D-r1 c ~ | t | }|D ]}| | |S )a Ensure that distributions matching `requirements` are activated
`requirements` must be a string or a (possibly-nested) sequence
thereof, specifying the distributions and versions required. The
return value is a sequence of the distributions that needed to be
activated to fulfill the requirements; all relevant distributions are
included, even if they were already activated in this working set.
)r r r )r r neededr s rK r zWorkingSet.require" sC 0 > >?? D HHTNNNN
rJ callback Callable[[Distribution], object]existingc x || j v rdS | j | |sdS | D ]
} || dS )zInvoke `callback` for all distributions
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call on all existing ones, as well.
N)r r )r r r r s rK subscribezWorkingSet.subscribe2 sa t~ % % F h''' F D HTNNNN rJ c 0 | j D ]
} || d S rW )r )r r r s rK r zWorkingSet._added_newB s, H HTNNNN rJ ~tuple[list[str], dict[str | None, list[str]], dict[str, Distribution], dict[str, str], list[Callable[[Distribution], object]]]c | j d d | j | j | j | j d d fS rW )r r rh r r r r s rK rc zWorkingSet.__getstate__F s]
LO O " " K - 2 2 4 4 N111
rJ c |\ }}}}}|d d | _ | | _ | | _ | | _ |d d | _ d S rW )r rh r r r r )r e_k_b_n_cr r r r r s rK rf zWorkingSet.__setstate__W sg IRFv ;Y qqqz ))++ kkmm ,H,M,M,O,O)"111 rJ rW )r r rU rl )r rR rU rl r r/ rU r7 )r r2 rU r )r rR rI r5 rU r )r rR re rR rU rl )rU r )NTF)
r r/ r r5 r r7 r3 r7 rU rl )FN) r r r r r r r r7 r r rU r )NNFN) r r r r r r r r7 r r rU r ) r r r r r r r r7 r r rU r r T)
r r r r r r r r7 rU r )NNT)
r r r r r r r r7 rU r )
r r r r r r r r7 rU r )r r1 rU r )r r r r7 rU rl rU rl )rU r )rE rF rG rO r classmethodr r r r r r r r r r r r r r r r rc rf rI rJ rK r r p s+ NN " " " " " [& [*
)
)
)
) 1 1 1 1 < .2
> > > >+ + + +( ! $ $ $ $ $ L %*)-
# # # # X# #'# %*)-# # # # # X# #'+/$))-
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Map each requirement to the extras that demanded it.
Nr r2 r r c | j p3t fd| d |pdz D S )z
Evaluate markers for req against each extra that
demanded it.
Return False if the req has a marker and fails
evaluation. Otherwise, return True.
c 3 P K | ] }j d |i V !dS )extraNmarkerevaluate)r r r s rK r z*_ReqExtras.markers_pass..m sL %
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rJ rW )r r2 r r )rE rF rG rO r rI rJ rK r r ` s7
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e d;dd& Ze d6d?d( Ze d6d@d) Z d6dAd+ZdBd-ZdCd1ZdCd2ZdS )Dr z5Searchable snapshot of distributions on a search pathN search_pathr r r5 pythonrU rl c Z i | _ || _ || _ | | dS )a! Snapshot distributions available on a search path
Any distributions found on `search_path` are added to the environment.
`search_path` should be a sequence of ``sys.path`` items. If not
supplied, ``sys.path`` is used.
`platform` is an optional string specifying the name of the platform
that platform-specific distributions must be compatible with. If
unspecified, it defaults to the current platform. `python` is an
optional string naming the desired version of Python (e.g. ``'3.6'``);
it defaults to the current version.
You may explicitly set `platform` (and/or `python`) to ``None`` if you
wish to map *all* distributions, not just those compatible with the
running platform or Python version.
N)_distmapr r scan)r r r r s rK r zEnvironment.__init__v s1 , 8:
+ rJ r r/ r7 c ~ | j du p|j du p|j | j k }|ot |j | j S )zIs distribution `dist` acceptable for this environment?
The distribution must match the platform and python version
requirements specified when this environment was created, or False
is returned.
N)r
py_versionr r )r r py_compats rK can_addzEnvironment.can_add sO
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dh &&t,,,,,rJ c z | t j }|D ])}t | D ]}| | *dS )ad Scan `search_path` for distributions usable in this environment
Any distributions found are added to the environment.
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the platform/python version defined at initialization are added.
N)r r r r )r r r r s rK r zEnvironment.scan sW (K D*400
rJ r rR r c ` | }| j |g S )a Return a newest-to-oldest list of distributions for `project_name`
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project's distributions use their project's name converted to all
lowercase as their key.
)lowerr r) )r r distribution_keys rK __getitem__zEnvironment.__getitem__ s/ (--//} !12666rJ c ( | | rx| rf| j |j g }||vrD| | | t j d d dS dS dS dS )zCAdd `dist` if we ``can_add()`` it and it has not already been addedhashcmpT)rq reverseN) r! has_versionr r rq r r operator
attrgetter)r r r s rK r zEnvironment.add s << M$"2"2"4"4 MM,,TXr::E5 T"""
x 29 = =t
LLLLL M M M M rJ Fr r2 r r r r r r. c d S rW rI r r r r r s rK r zEnvironment.best_match s rJ r r c d S rW rI r0 s rK r zEnvironment.best_match s "crJ r c | | }n# t $ r |s d}Y nw xY w||S | |j D ]
}||v r|c S | || S )a Find distribution best matching `req` and usable on `working_set`
This calls the ``find(req)`` method of the `working_set` to see if a
suitable distribution is already active. (This may raise
``VersionConflict`` if an unsuitable version of the project is already
active in the specified `working_set`.) If a suitable distribution
isn't active, this method returns the newest distribution in the
environment that meets the ``Requirement`` in `req`. If no suitable
distribution is found, and `installer` is supplied, then the result of
calling the environment's ``obtain(req, installer)`` method will be
returned.
N)r r rq obtain)r r r r r r s rK r zEnvironment.best_match s & ##C((DD &
DDD KM Ds{{ {{3 ***s ** requirementc d S rW rI r r4 r s rK r3 zEnvironment.obtain s
rJ $Callable[[Requirement], None] | Nonec d S rW rI r6 s rK r3 zEnvironment.obtain s
srJ c d S rW rI r6 s rK r3 zEnvironment.obtain s
"crJ \Callable[[Requirement], None] | _InstallerType | None | _StrictInstallerType[_DistributionT]c |r || ndS )a Obtain a distribution matching `requirement` (e.g. via download)
Obtain a distro that matches requirement (e.g. via download). In the
base ``Environment`` class, this routine just returns
``installer(requirement)``, unless `installer` is None, in which case
None is returned instead. This method is a hook that allows subclasses
to attempt other ways of obtaining a distribution before falling back
to the `installer` argument.NrI r6 s rK r3 zEnvironment.obtain s *3 projectr s rK __iadd__zEnvironment.__iadd__ s e\ * * C HHUOOOO
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}|S )z4Add an environment or distribution to an environmentN)r r r )r r> newr s rK __add__zEnvironment.__add__, s< nnR$tn<<; C 3JCC
rJ )r r r r5 r r5 rU rl r )r r/ rU rl rW )r r rU rl )r rR rU r F)
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rJ r c 2 e Zd ZU dZded< ded< ded< dS ) r aT An error occurred extracting a resource
The following attributes are available from instances of this exception:
manager
The resource manager that raised this exception
cache_path
The base directory for resource extraction
original_error
The exception instance that caused extraction to fail
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cache_pathzBaseException | Noneoriginal_errorN)rE rF rG rO rH rI rJ rK r r 8 s? OOO((((((rJ r c e Zd ZU dZdZded< d'dZd(d
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d.d/d Zed'd Zd0d!Zd1d#Zd2d3d&ZdS )4r z'Manage resource extraction and packagesNr5 extraction_pathrU rl c i | _ d S rW ) cached_filesr s rK r zResourceManager.__init__Q s 68rJ package_or_requirementr5 ro rR r7 c F t | | S )z Does the named resource exist?)r r{ r rQ ro s rK r z ResourceManager.resource_existsU s! 233@@ OOOrJ c F t | | S )z,Is the named resource an existing directory?)r r rS s rK r z ResourceManager.resource_isdir[ s! 233BB=QQQrJ c H t | | | S )z4Return a true filesystem path for specified resource)r rr rS s rK r z!ResourceManager.resource_filenamea s* 233II -
rJ r: c H t | | | S )z9Return a readable file-like object for specified resource)r ru rS s rK r z ResourceManager.resource_streami * 233GG -
rJ rv c H t | | | S )z)Return specified resource as :obj:`bytes`)r rx rS s rK r z ResourceManager.resource_stringq rW rJ rb c F t | | S )z1List the contents of the named resource directory)r r rS s rK r z ResourceManager.resource_listdiry s! 233DD]SSSrJ r c $ t j d }| j p
t }t j d }t |j di t }| |_
||_ ||_ |)z5Give an error message for problems extracting file(s)r a
Can't extract file(s) to egg cache
The following error occurred while trying to extract file(s)
to the Python egg cache:
{old_exc}
The Python egg cache directory is currently set to:
{cache_path}
Perhaps your account does not have write access to this directory?
You can change the cache directory by setting the PYTHON_EGG_CACHE
environment variable to point to an accessible directory.
NrI )
r exc_inforN r textwrapdedentlstripr r r rn rK rL )r old_excrK tmplerrs rK extraction_errorz ResourceManager.extraction_error s ,..#)@->-@-@
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$ kdk 5 5FHH 5 566 # $ rJ rI archive_namenamesIterable[StrPath]c | j p
t }t j j ||dz g|R } t | n$# t $ r | Y nw xY w| | d| j |< |S )a Return absolute location in cache for `archive_name` and `names`
The parent directory of the resulting path will be created if it does
not already exist. `archive_name` should be the base filename of the
enclosing egg (which may not be the name of the enclosing zipfile!),
including its ".egg" extension. `names`, if provided, should be a
sequence of path name parts "under" the egg's extraction location.
This method should only be called by resource providers that need to
obtain an extraction location, and only for names they intend to
extract, as it tracks the generated names for possible cleanup later.
z-tmpT)
rN r r r r _bypass_ensure_directory Exceptionrb _warn_unsafe_extraction_pathrP )r rc rd extract_path target_paths rK get_cache_pathz ResourceManager.get_cache_path s +B/@/B/B gl< 1FOOOO $ $[ 1 1 1 1 $ $ $ ! ! # # # # # $
)),777)-+&s A A#"A#c L t j dk r'| t j d sdS t j | j }|t j z s|t j z r5 dj di t }t j |t dS dS )aN
If the default extraction path is overridden and set to an insecure
location, such as /tmp, it opens up an opportunity for an attacker to
replace an extracted file with an unauthorized payload. Warn the user
if a known insecure location is used.
See Distribute #375 for more details.
ntwindirNzExtraction path is writable by group/others and vulnerable to attack when used with get_resource_filename ({path}). Consider a more secure location (set with .set_extraction_path or the PYTHON_EGG_CACHE environment variable).rI )
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Fwt}}$ $, ,$ "5 ,: ! ! xx! !C
M#{ + + + + + , ,rJ tempnamer% filenamec t j dk r6t j | j dz dz }t j || dS dS )a4 Perform any platform-specific postprocessing of `tempname`
This is where Mac header rewrites should be done; other platforms don't
have anything special they should do.
Resource providers should call this method ONLY after successfully
extracting a compressed resource. They must NOT call it on resources
that are already in the filesystem.
`tempname` is the current (temporary) name of the file, and `filename`
is the name it will be renamed to by the caller after this routine
returns.
posixim i N)r rI rq rr chmod)r rz r{ rx s rK postprocesszResourceManager.postprocess sM 7g WX&&.%76AD HXt $ $ $ $ $ rJ r c @ | j rt d || _ dS )a Set the base path where resources will be extracted to, if needed.
If you do not call this routine before any extractions take place, the
path defaults to the return value of ``get_default_cache()``. (Which
is based on the ``PYTHON_EGG_CACHE`` environment variable, with various
platform-specific fallbacks. See that routine's documentation for more
details.)
Resources are extracted to subdirectories of this path based upon
information given by the ``IResourceProvider``. You may set this to a
temporary directory, but then you must call ``cleanup_resources()`` to
delete the extracted files when done. There is no guarantee that
``cleanup_resources()`` will be able to remove all extracted files.
(Note: you may not change the extraction path for a given resource
manager once resources have been extracted, unless you first call
``cleanup_resources()``.)
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of the file and directory names that could not be successfully removed.
This function does not have any concurrency protection, so it should
generally only be called when the extraction path is a temporary
directory exclusive to a single process. This method is not
automatically called; you must call it explicitly or register it as an
``atexit`` function if you wish to ensure cleanup of a temporary
directory used for extractions.
rI )r r s rK r z!ResourceManager.cleanup_resources s rJ r )rQ r5 ro rR rU r7 )rQ r5 ro rR rU rR )rQ r5 ro rR rU r: )rQ r5 ro rR rU rv )rQ r5 ro rR rU rb )rU r rI )rc rR rd re rU rR )rz r% r{ r% rU rl r rR rU rl rG )r r7 rU rb )rE rF rG rO rN rH r r r r r r r rb rl staticmethodri r r r rI rJ rK r r L sS 11"&O&&&&9 9 9 9P P P P R R R R
T T T T < 2 , , , \,4% % % %($ $ $ $0 rJ r c ` t j d pt d S )z
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or a platform-relevant user cache dir for an app
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>>> parse_version(_forgiving_version('0.23ubuntu1'))
>>> parse_version(_forgiving_version('0.23-'))
>>> parse_version(_forgiving_version('0.-_'))
>>> parse_version(_forgiving_version('42.+?1'))
>>> parse_version(_forgiving_version('hello world'))
r. r~ safeN0z
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<<S ! !!rJ text SyntaxError | Literal[False]c v t | n'# t $ r}d|_ d|_ |cY d}~S d}~ww xY wdS )zo
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c R t j | || S rW )ioBytesIOrx rq s rK ru z NullProvider.get_resource_stream s$ z$227MJJKKKrJ rv c ^ | | | j | S rW )_getr r rq s rK rx z NullProvider.get_resource_string s' yy$"2MBBCCCrJ r7 c ^ | | | j | S rW )_hasr r rz s rK r{ zNullProvider.has_resource s% yy$"2MBBCCCrJ c 8 | | j | S rW )r r rX s rK _get_metadata_pathz NullProvider._get_metadata_path s xx
t,,,rJ rI c h | j sdS | | }| | S rH )r r r r rI r s rK rY zNullProvider.has_metadata s4 } 5&&t,,yy rJ c | j sdS | | }| | } | d S # t $ r }|xj d| d| z
c_ d }~ww xY w)Nr utf-8z in file at path: )r r r decodeUnicodeDecodeErrorreason)r rI r valueexcs rK r\ zNullProvider.get_metadata s } 2&&t,, $ <<(( (!
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| r3t | }t ||d }t ||| d S dd lm} t! | d| d |f||< t ||d } t | || d S ) Nzscripts/z