B He @sxdZddlZddlZddlZddlZddlZddlZddlZddlZddl m Z m Z m Z m Z mZe eeeedfdddZe ee edd d ZGd d d e Zee ed ddZeee edddZee edddZedkrtddlZeZedstdedeedeej edddx4ee!dde"d d!d"D]Z#ee#d#dq^WdS)$zPEP 656 support. This module implements logic to detect if the currently running Python is linked against musl, and what musl version is used. N)IOIterator NamedTupleOptionalTuple.)ffmtreturncCst||t|S)N)structunpackreadcalcsize)rrrt/var/www/downstreamdata.science/rtclock/rtclock-venv/lib/python3.7/site-packages/pip/_vendor/packaging/_musllinux.py_read_unpackedsr)rr c Csd|dyt|d}Wntjk r.dSX|ddtdkrHdS|tddydd d |d\}}}Wntk rdSXtj|}yt||\}}}}}}} Wntjk rdSXxt | dD]} |||| y|t||\} } } Wntjk rdSX| d kr,q|| t | |  d }d |krZdS|SWdS)zDetect musl libc location by parsing the Python executable. Based on: https://gist.github.com/lyssdod/f51579ae8d93c8657a5564aefc2ffbca ELF header: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html r16BNsELFHHI)IIIIHHHIIIIIIII)rrr)QQQIHHHIIQQQQQQ)r)rrmusl)seekrr errortupler KeyErroroperator itemgetterrangeosfsdecoder strip)ridente_fmtp_fmtp_idxp_get_e_phoff e_phentsizee_phnumip_typep_offsetp_filesz interpreterrrr_parse_ld_musl_from_elfsB     r6c@seZdZUeed<eed<dS) _MuslVersionmajorminorN)__name__ __module__ __qualname__int__annotations__rrrrr7Gs r7)outputr cCsxdddd|DD}t|dks<|ddddkr@dStd |d }|sXdStt|d t|dd S) NcSsg|] }|r|qSrr).0nrrr Msz'_parse_musl_version..css|]}|VqdS)N)r')r@rArrr Msz&_parse_musl_version..rrrrzVersion (\d+)\.(\d+)r)r8r9) splitlineslenrematchr7r=group)r?linesmrrr_parse_musl_versionLs rK) executabler c Cslt8}y|t|d}Wntk r2dSXt|}WdQRX|sNdStj|gtjdd}t |j S)a`Detect currently-running musl runtime version. This is done by checking the specified executable's dynamic linking information, and invoking the loader to parse its output for a version string. If the loader is musl, the output would be something like:: musl libc (x86_64) Version 1.2.2 Dynamic Program Loader rbNT)stderruniversal_newlines) contextlib ExitStack enter_contextopenOSErrorr6 subprocessrunPIPErKrN)rLstackrldprocrrr_get_musl_versionVs r[)archr ccsLttj}|dkrdSx0t|jddD]}d|jd|d|Vq&WdS)aTGenerate musllinux tags compatible to the current platform. :param arch: Should be the part of platform tag after the ``linux_`` prefix, e.g. ``x86_64``. The ``linux_`` prefix is assumed as a prerequisite for the current platform to be musllinux-compatible. :returns: An iterator of compatible musllinux tags. N musllinux_r-)r[sysrLr$r9r8)r\sys_muslr9rrr platform_tagsns ra__main__zlinux-z not linuxzplat:zmusl:ztags: )endz[.-]r--rr]z )$__doc__rP functoolsr"r%rFr rUr_typingrrrrrbytesstrr=rr6r7rK lru_cacher[rar: sysconfig get_platformplat startswithAssertionErrorprintrLsubsplittrrrrs21    $