a Z^^c@sdZddlmZddlmZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl mZddlZgdZeddZd e_d d Zd d Zd2ddZd3ddZed4ddZd5ddZeejjeddZGdddZGdddZz.ddlZddlmZd6ddZ eee Wne!y2Yn0d d!Z"d7d"d#Z#d$d%Z$d&d'Z%d(d)Z&d*d+Z'd,Z(e )d-e(d.e(d/e j*Z+[(d0d1Z,dS)8zUtilities to support packages.) namedtuple)singledispatchN) ModuleType) get_importeriter_importers get_loader find_loader walk_packages iter_modulesget_data ImpImporter ImpLoader read_code extend_path ModuleInforzmodule_finder name ispkgz.A namedtuple with minimal info about a module.cCsPz |j}Wn8tyB||}|dur0YdStj||YS0||SdS)z'Return the finder-specific module spec.N) find_specAttributeError find_module importlibutilZspec_from_loader)findernamerloaderr/usr/lib64/python3.9/pkgutil.py _get_specs   rcCs6ddl}|d}|tjjkr"dS|d||S)Nrii )marshalreadrrZ MAGIC_NUMBERZload)ZstreamrZmagicrrrr )s    r c #sifddt||D]}|V|jrzt|jWnJtyX|durT||jYqty~|durx||jnYq0ttj|jddpg}fdd|D}t ||jd|EdHqdS)aYields ModuleInfo for all modules recursively on path, or, if path is None, all accessible modules. 'path' should be either None or a list of paths to look for modules in. 'prefix' is a string to output on the front of every module name on output. Note that this function must import all *packages* (NOT all modules!) on the given path, in order to access the __path__ attribute to find submodules. 'onerror' is a function which gets called with one argument (the name of the package which was being imported) if any exception occurs while trying to import a package. If no onerror function is supplied, ImportErrors are caught and ignored, while all other exceptions are propagated, terminating the search. Examples: # list all modules python can access walk_packages() # list all submodules of ctypes walk_packages(ctypes.__path__, ctypes.__name__+'.') cSs||vr dSd||<dS)NTr)pmrrrseenSszwalk_packages..seenN__path__csg|]}|s|qSrr)Z.0rr rrZ jsz!walk_packages...) r ispkgZ __import__r ImportErrorZ Exceptiongetattrsysmodulesr)pathprefixZonerrorZinforr"rr6s     rccsr|durt}nt|tr$tdn tt|}i}|D]6}t||D]&\}}||vrDd||<t|||VqDq6dS)aYields ModuleInfo for all submodules on path, or, if path is None, all top-level modules on sys.path. 'path' should be either None or a list of paths to look for modules in. 'prefix' is a string to output on the front of every module name on output. Nz9path must be None or list of paths to look for modules in)r isinstancestr ValueErrorZmapriter_importer_modulesr)r)r*Z importersyieldedZirr$rrrr os    r cCst|dsgS||S)Nr )hasattrr )importerr*rrrr/s r/c c |jdustj|jsdSi}ddl}zt|j}WntyNg}Yn0||D]}||}|dks\||vr|q\tj|j|}d}|stj|rd|vr|}zt|} Wntyg} Yn0| D]}||} | dkrd}qqq\|r\d|vr\d||<|||fVq\dSNr__init__Fr#Tr+ r)osZisdirinspectZlistdirOSErrorZsort getmodulenamejoin) r2r*r0r8 filenamesfnmodnamer)r$ dircontentssubnamerrr_iter_file_finder_modules<       rAcCsBt&tdttdaWdn1s40YdS)NZignoreimp)warningsZcatch_warningsZ simplefilterDeprecationWarningr import_modulerCrrrr _import_imps  rGc@s.eZdZdZd ddZd ddZd dd ZdS) r aPEP 302 Finder that wraps Python's "classic" import algorithm ImpImporter(dirname) produces a PEP 302 finder that searches that directory. ImpImporter(None) produces a PEP 302 finder that searches the current sys.path, plus any modules that are frozen or built-in. Note that ImpImporter does not currently support being used by placement on sys.meta_path. NcCstdtt||_dSNz5This emulation is deprecated, use 'importlib' instead)rDwarnrErGr))selfr)rrrr5s zImpImporter.__init__cCs~|dd}||kr$|jdur$dS|jdur4d}ntj|jg}zt||\}}}WntynYdS0t||||S)Nr#)splitr)r7ZrealpathrCrr%r )rJfullnamer)r@filefilenameetcrrrrs  zImpImporter.find_modulerc cr3r4r6) rJr*r0r8r<r=r>r)r$r?r@rrrr rBzImpImporter.iter_modulesNrQr)__name__ __module__ __qualname____doc__r5rr rrrrr s  r c@sneZdZdZdZZddZddZddZd d Z d d Z d dZ dddZ dddZ ddZdddZdS)r zBPEP 302 Loader that wraps Python's "classic" import algorithm NcCs.tdtt||_||_||_||_dSrH)rDrIrErGrNrOrMrP)rJrMrNrOrPrrrr5szImpLoader.__init__cCsJ|z*t||j|j|j}W|jrF|jn|jrD|j0|SrQ)_reopenrC load_modulerNrOrPclose)rJrMmodrrrrXs  zImpLoader.load_modulecCs6t|d}|WdS1s(0YdS)Nrb)openr)rJZpathnamerNrrrr &s zImpLoader.get_datacCsT|jrP|jjrP|jd}|tjkr2t|jd|_n|tjtjfvrPt|jd|_dS)Nrr[) rNZclosedrPrC PY_SOURCEr\rO PY_COMPILED C_EXTENSION)rJmod_typerrrrW*s   zImpLoader._reopencCs0|dur|j}n||jkr,td|j|f|S)Nz,Loader for module %s cannot handle module %s)rMr%rJrMrrr _fix_name2s zImpLoader._fix_namecCs||}|jdtjkSNr])rdrPrC PKG_DIRECTORYrcrrr is_package:s zImpLoader.is_packagecCs||}|jdur|jd}|tjkrD||}t||jd|_nT|tjkr| zt |j |_W|j q|j 0n|tj kr||_|jS)Nr]Zexec)rdcoderPrCr_ get_sourcecompilerOr`rWr rNrYrf _get_delegateget_code)rJrMrbsourcerrrrl>s       zImpLoader.get_codecCs||}|jdur|jd}|tjkrZ|z|j|_W|jq|j0nx|tj krt j |j ddrt|j ddd}||_Wdq1s0Yn|tjkr||_|jS)Nr]rKr^)rdrmrPrCr_rWrNrrYr`r7r)ZexistsrOr\rfrkri)rJrMrbfrrrriOs     * zImpLoader.get_sourcecCst|j}t|d}|jS)Nr5)r rOrr)rJrspecrrrrkas  zImpLoader._get_delegatecCsH||}|jd}|tjkr*|S|tjtjtjfvrD|j SdSre) rdrPrCrfrk get_filenamer_r`rarO)rJrMrbrrrrpfs    zImpLoader.get_filenamerQrQrQ)rSrTrUrVrhrmr5rXr rWrdrgrlrirkrprrrrr s    r ) zipimporterc csttj|j}|j}t|}i}ddl}|D]}||s>q.||dt j }t|dkr|ddr|d|vrd||d<||ddfVt|dkrq.| |d}|dkrq.|r.d|vr.||vr.d||<||dfVq.dS) Nrr]r+z __init__.pyTr5r#F) Zsorted zipimportZ_zip_directory_cacheZarchiver*Zlenr8 startswithrLr7Zsepr:) r2r*ZdirlistZ_prefixZplenr0r8r=r>rrriter_zipimport_modulests*    rtc Csjztj|}WnVtydtjD]8}z ||}tj||Wq`Wq"tyXYq"0q"d}Yn0|S)zRetrieve a finder for the given path item The returned finder is cached in sys.path_importer_cache if it was newly created by a path hook. The cache (or part of it) can be cleared manually if a rescan of sys.path_hooks is necessary. N)r'Zpath_importer_cacheKeyErrorZ path_hooksZ setdefaultr%)Z path_itemr2Z path_hookrrrrs      rccs|drd|}t|d|vrV|dd}t|}t|dd}|durhdSntjEdHtj }|D]}t |VqldS)aYield finders for the given module name If fullname contains a '.', the finders will be for the package containing fullname, otherwise they will be all registered top level finders (i.e. those on both sys.meta_path and sys.path_hooks). If the named module is in a package, that package is imported as a side effect of invoking this function. If no module name is specified, all top level finders are produced. r#'Relative module name {!r} not supportedrr!N) rsformatr% rpartitionrrFr&r'Z meta_pathr)r)rMmsgZpkg_namepkgr)Zitemrrrrs     rcCsn|tjvr tj|}|dur dSt|trb|}t|dd}|durF|St|dddurZdS|j}n|}t|S)zGet a "loader" object for module_or_name Returns None if the module cannot be found or imported. If the named module is not already imported, its containing package (if any) is imported, in order to establish the package __path__. NZ __loader__Z__spec__)r'r(r,rr&rSr)Zmodule_or_nameZmodulerrMrrrrs    rc Cs|drd|}t|ztj|}WnHttttfyt}z(d}t||t |||WYd}~n d}~00|dur|j SdS)zFind a "loader" object for fullname This is a backwards compatibility wrapper around importlib.util.find_spec that converts most failures to ImportError and only returns the loader rather than the full spec r#rvz,Error while finding loader for {!r} ({}: {})N) rsrwr%rrrrZ TypeErrorr.Ztyper)rMryroZexrrrrs  .rc Cst|ts|S|d}|dd}|d\}}}|rdztj|j}Wqjttfy`|YS0ntj}|D]>}t|t sqnt |}|durg} t |dr| |} | dur| j pg} nt |dr||\}} | D]} | |vr|| qtj||} tj| rnz t| } Wn:tyP}z tjd| |fWYd}~qnd}~00| F| D]0}|d}|r\|drq\||q\Wdqn1s0Yqn|S) aExtend a package's path. Intended use is to place the following code in a package's __init__.py: from pkgutil import extend_path __path__ = extend_path(__path__, __name__) This will add to the package's __path__ all subdirectories of directories on sys.path named after the package. This is useful if one wants to distribute different parts of a single logical package as multiple directories. It also looks for *.pkg files beginning where * matches the name argument. This feature is similar to *.pth files (see site.py), except that it doesn't special-case lines starting with 'import'. A *.pkg file is trusted at face value: apart from checking for duplicates, all entries found in a *.pkg file are added to the path, regardless of whether they are exist the filesystem. (This is a feature.) If the input path is not a list (as is the case for frozen packages) it is returned unchanged. The input path is not modified; an extended copy is returned. Items are only appended to the copy at the end. It is assumed that sys.path is a sequence. Items of sys.path that are not (unicode or 8-bit) strings referring to existing directories are ignored. Unicode items of sys.path that cause errors when used as filenames may cause this function to raise an exception (in line with os.path.isdir() behavior). z.pkgNr#rrzCan't open %s: %s Z z#)r,Zlistrxr'r(r!rurr)r-rr1rZsubmodule_search_locationsrZappendr7r;Zisfiler\r9ZstderrZwriteZrstriprs)r)rZ sname_pkgZparent_packageZ_Z final_nameZ search_pathZdirrZportionsroZportionZpkgfilernryZlinerrrrsR!             0rcCstj|}|durdS|j}|dus0t|ds4dStj|pJtj |}|dus^t|dsbdS| d}| dt j |jt j j|}||S)afGet a resource from a package. This is a wrapper round the PEP 302 loader get_data API. The package argument should be the name of a package, in standard module format (foo.bar). The resource argument should be in the form of a relative filename, using '/' as the path separator. The parent directory name '..' is not allowed, and nor is a rooted name (starting with a '/'). The function returns a binary string, which is the contents of the specified resource. For packages located in the filesystem, which have already been imported, this is the rough equivalent of d = os.path.dirname(sys.modules[package].__file__) data = open(os.path.join(d, resource), 'rb').read() If the package cannot be located or loaded, or it uses a PEP 302 loader which does not support get_data(), then None is returned. Nr __file__z/r)rrrrr1r'r(getZ _bootstrapZ_loadrLZinsertr7r)Zdirnamer{r;r )ZpackageZresourcerorrZpartsZ resource_namerrrr Vs     r z(?!\d)(\w+)(\.(?!\d)(\w+))*z ^(?Pz)(?P:(?Pz)?)?$c Cst|}|std||}|drZt|d}|d}|rT|dng}nn|d}|d}t|}|r|d}|d|}zt|}|d|}Wqxt yYqYqx0qx|}|D]}t ||}q|S)a Resolve a name to an object. It is expected that `name` will be a string in one of the following formats, where W is shorthand for a valid Python identifier and dot stands for a literal period in these pseudo-regexes: W(.W)* W(.W)*:(W(.W)*)? The first form is intended for backward compatibility only. It assumes that some part of the dotted name is a package, and the rest is an object somewhere within that package, possibly nested inside other objects. Because the place where the package stops and the object hierarchy starts can't be inferred by inspection, repeated attempts to import must be done with this form. In the second form, the caller makes the division point clear through the provision of a single colon: the dotted name to the left of the colon is a package to be imported, and the dotted name to the right is the object hierarchy within that package. Only one import is needed in this form. If it ends with the colon, then a module object is returned. The function will return an object (which might be a module), or raise one of the following exceptions: ValueError - if `name` isn't in a recognised format ImportError - if an import failed when it shouldn't have AttributeError - if a failure occurred when traversing the object hierarchy within the imported package to get to the desired object) zinvalid format: ZclnrzZobjr#r) _NAME_PATTERNZmatchr.Z groupdictr|rrFrLZpopr%r&) rrZgdrZr}r>rZsZresultrrr resolve_names0           r)NrN)NrrRrRrRrR)-rVZ collectionsrZ functoolsrZ simplegenericrZimportlib.utilZimportlib.machineryr7Zos.pathZrer'ZtypesrrDZ__all__rrr rr r/rAZregisterZ machineryZ FileFinderrGr r rrrqrtr%rrrrrr Z _DOTTED_WORDSrjZUr~rrrrrZsX     9   (Jc   ^+