U .c @sVdZddlmZddlZddlZddlZddlZddlZddlZddl Z ddl Z ddl m Z m Z mZddddd d Zdd d d dZGdddeZdddddZedddddZdddddZedkrRddlZeZedstdedeed ee jed!d"d#eed$d%ed&d'd(D]Z ee d)d#q>dS)*zPEP 656 support. This module implements logic to detect if the currently running Python is linked against musl, and what musl version is used. ) annotationsN)IOIterator NamedTuplez IO[bytes]strztuple[int, ...])ffmtreturncCst||t|SN)structunpackreadcalcsize)rrrG/tmp/pip-unpacked-wheel-vud_xk1z/wheel/vendored/packaging/_musllinux.py_read_unpackedsrz str | None)rr c Csp|dzt|d}Wntjk r0YdSX|ddtdkrJdS|tddzdd d |d\}}}Wntk rYdSXtj|}zt||\}}}}}}} Wntjk rYdSXt | dD]} |||| z|t||\} } } Wntjk r&YdSX| d kr4q|| t | |  d }d |krddS|SdS)zDetect musl libc location by parsing the Python executable. Based on: https://gist.github.com/lyssdod/f51579ae8d93c8657a5564aefc2ffbca ELF header: https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html rZ16BNsELFZHHI)ZIIIIHHHZIIIIIIII)rrr)ZQQQIHHHZIIQQQQQQ)r)rrmusl)seekrr errortuplerKeyErroroperator itemgetterrangeosfsdecoder strip)ridentZe_fmtZp_fmtZp_idxZp_get_e_phoff e_phentsizee_phnumiZp_typeZp_offsetZp_filesz interpreterrrr_parse_ld_musl_from_elfsF      r*c@seZdZUded<ded<dS) _MuslVersionintmajorminorN)__name__ __module__ __qualname____annotations__rrrrr+Is r+z_MuslVersion | None)outputr cCsxdddd|DD}t|dks<|ddddkr@dStd |d }|sXdStt|d t|dd S) NcSsg|] }|r|qSrr.0nrrr Osz'_parse_musl_version..css|]}|VqdSr )r"r4rrr Osz&_parse_musl_version..rrrrzVersion (\d+)\.(\d+)r)r-r.) splitlineslenrematchr+r,group)r3linesmrrr_parse_musl_versionNs r@) executabler c CsxtD}z|t|d}Wn tk r>YW5QRdSXt|}W5QRX|sZdStj|gtjdd}t |j S)a`Detect currently-running musl runtime version. This is done by checking the specified executable's dynamic linking information, and invoking the loader to parse its output for a version string. If the loader is musl, the output would be something like:: musl libc (x86_64) Version 1.2.2 Dynamic Program Loader rbNT)stderrtext) contextlib ExitStack enter_contextopenOSErrorr* subprocessrunPIPEr@rC)rAstackrZldprocrrr_get_musl_versionXs rOz Iterator[str])archr ccsHttj}|dkrdSt|jddD]}d|jd|d|Vq$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$)rOsysrArr.r-)rPZsys_muslr.rrr platform_tagsps rS__main__zlinux-z not linuxzplat:zmusl:ztags: )endz[.-]r$-rrQz )!__doc__ __future__rrE functoolsrr r;r rJrRtypingrrrrr*r+r@ lru_cacherOrSr/ sysconfig get_platformplat startswithAssertionErrorprintrAsubsplittrrrrs4 1    "