ó j·Ã^c@@s#ddlmZddlZddlmZmZmZddlmZm Z m Z ddl m Z ddl mZerÞddlmZmZmZmZmZddlmZerËdd lmZqÞdd lmZnd Zd d d gZdefd„ƒYZdefd„ƒYZdS(i(tabsolute_importN(t iteritemstiterkeyst itervalues(t HashMismatcht HashMissingtInstallationError(t read_chunks(tMYPY_CHECK_RUNNING(tDicttListtBinaryIOtNoReturntIterator(tPY3(t_Hash(t_hashtsha256tsha384tsha512tHashescB@sheZdZd d„Zed„ƒZd„Zd„Zd„Z d„Z d„Z d„Z d „Z RS( saA wrapper that builds multiple hashes at once and checks them against known-good values cC@s|dkrin||_dS(so :param hashes: A dict of algorithm names pointing to lists of allowed hex digests N(tNonet_allowed(tselfthashes((s+site-packages/pip/_internal/utils/hashes.pyt__init__)scC@std„|jjƒDƒƒS(Ncs@s|]}t|ƒVqdS(N(tlen(t.0tdigests((s+site-packages/pip/_internal/utils/hashes.pys 4s(tsumRtvalues(R((s+site-packages/pip/_internal/utils/hashes.pyt digest_count1scC@s||jj|gƒkS(s/Return whether the given hex digest is allowed.(Rtget(Rt hash_namet hex_digest((s+site-packages/pip/_internal/utils/hashes.pytis_hash_allowed6scC@sæi}x]t|jƒD]L}ytj|ƒ||s (Q