U Ha @stdZddlZddlZddlZddlZddlZddlZddlZddlZddl m Z m Z m Z m Z mZe eeeedfdddZe ee edd d ZGd d d e Zee ed ddZeee edddZee edddZedkrpddlZeZedstdedeedeej edddee!dde"d d!d"D]Z#ee#d#dq\dS)$zPEP 656 support. This module implements logic to detect if the currently running Python is linked against musl, and what musl version is used. N)IOIterator NamedTupleOptionalTuple.)ffmtreturncCst||t|SN)structunpackreadcalcsize)rrrD/tmp/pip-unpacked-wheel-tx790h60/pip/_vendor/packaging/_musllinux.py_read_unpackedsr)rr c Csp|dzt|d}Wntjk r0YdSX|ddtdkrJdS|tddzdd d |d\}}}Wntk rYdSXtj|}zt||\}}}}}}} Wntjk rYdSXt | dD]} |||| z|t||\} } } Wntjk r&YdSX| d kr4q|| t | |  d }d |krddS|SdS)zDetect musl libc location by parsing the Python executable. Based on: https://gist.github.com/lyssdod/f51579ae8d93c8657a5564aefc2ffbca ELF header: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html rZ16BNsELFZHHI)ZIIIIHHHZIIIIIIII)rrr)ZQQQIHHHZIIQQQQQQ)r)rrmusl)seekrr errortuplerKeyErroroperator itemgetterrangeosfsdecoder strip)ridentZe_fmtZp_fmtZp_idxZp_get_e_phoff e_phentsizee_phnumiZp_typeZp_offsetZp_filesz interpreterrrr_parse_ld_musl_from_elfsF      r*c@seZdZUeed<eed<dS) _MuslVersionmajorminorN)__name__ __module__ __qualname__int__annotations__rrrrr+Gs r+)outputr cCsxdddd|DD}t|dks<|ddddkr@dStd |d }|sXdStt|d t|dd S) NcSsg|] }|r|qSrr.0nrrr Msz'_parse_musl_version..css|]}|VqdSr )r"r4rrr Msz&_parse_musl_version..rrrrzVersion (\d+)\.(\d+)r)r,r-) splitlineslenrematchr+r1group)r3linesmrrr_parse_musl_versionLs r@) executabler c CsxtD}z|t|d}Wn tk r>YW5QRdSXt|}W5QRX|sZdStj|gtjdd}t |j S)a`Detect currently-running musl runtime version. This is done by checking the specified executable's dynamic linking information, and invoking the loader to parse its output for a version string. If the loader is musl, the output would be something like:: musl libc (x86_64) Version 1.2.2 Dynamic Program Loader rbNT)stderruniversal_newlines) contextlib ExitStack enter_contextopenIOErrorr* subprocessrunPIPEr@rC)rAstackrZldprocrrr_get_musl_versionVs rO)archr ccsHttj}|dkrdSt|jddD]}d|jd|d|Vq$dS)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. NZ musllinux_r$)rOsysrArr-r,)rPZsys_muslr-rrr platform_tagsns rS__main__zlinux-z not linuxzplat:zmusl:ztags: )endz[.-]r$-rrQz )$__doc__rE functoolsrr r;r rJrRtypingrrrrrbytesstrr1rr*r+r@ lru_cacherOrSr. sysconfig get_platformplat startswithAssertionErrorprintrAsubsplittrrrrs21    "