U lu f&ã@s^dZddlmZmZmZddlmZddlmZdd„Z dd „Z d d „Z d d „Z dd d gZ dS)z miscellaneous zmq_utils wrappingé)ÚInterruptedSystemCallÚ _check_rcÚ_check_versioné)Úffi)ÚlibcCs,tddƒt|tƒr| d¡}tt |¡ƒS)zxCheck for zmq capability by name (e.g. 'ipc', 'curve') .. versionadded:: libzmq-4.1 .. versionadded:: 14.1 )érzzmq.hasÚutf8)rÚ isinstanceÚstrÚencodeÚboolÚCZzmq_has)Z capability©rú:/tmp/pip-unpacked-wheel-h6ekxre8/zmq/backend/cffi/utils.pyÚhas s   rcCsVtddƒt d¡}t d¡}t ||¡}t|ƒt |¡dd…t |¡dd…fS)ugenerate a Z85 key pair for use with zmq.CURVE security Requires libzmq (≥ 4.0) to have been built with CURVE support. Returns ------- (public, secret) : two bytestrings The public and private key pair as 40 byte z85-encoded bytestrings. )ééÚ curve_keypairúchar[64]Né()rrÚnewrZzmq_curve_keypairrÚbuffer)ÚpublicÚprivateÚrcrrrrs    rcCsNt|tƒr| d¡}tddƒt d¡}t ||¡}t|ƒt  |¡dd…S)unCompute the public key corresponding to a private key for use with zmq.CURVE security Requires libzmq (≥ 4.2) to have been built with CURVE support. Parameters ---------- private The private key as a 40 byte z85-encoded bytestring Returns ------- bytestring The public key as a 40 byte z85-encoded bytestring. r )rrÚ curve_publicrNr) r r r rrrrZzmq_curve_publicrr)rrrrrrr*s     rcOs6||Ž}z t|ƒWq2tk r,YqYqXq2qdS)z/make a call, retrying if interrupted with EINTRN)rr)ÚfÚargsÚkwargsrrrrÚ_retry_sys_callBs   r N)Ú__doc__Z zmq.errorrrrZ_cffirrrrrrr Ú__all__rrrrÚs