o –¨ÊhÉ$ã@s°dZddlmZdZddlZddlmZdd„Zd d „Zd d „Z d d„Z dd„Z dd„Z dd„Z dd„Zdd„Zdd„Zdd„Zd(dd„Zdd „Zd!d"„Zd#d$„Zd)d&d'„ZdS)*z Utilities é)Úprint_functionFNé)Ú struct_unpackcCs|z9t|tƒr |WSt|ƒ}|dkr|dWS|dkr*|dd|}td|ƒdWS|dd|}td|ƒdWS‚)z&Unpacks the given buffer to an integerrréóú +----------+------------------------- | length | a string goes here +----------+------------------------- If the string is bigger than 250, then it looks like this: <- 1b -><- 2/3/8 -> +------+-----------+------------------------- | type | length | a string goes here +------+-----------+------------------------- if type == ü: length is code in next 2 bytes elif type == ý: length is code in next 3 bytes elif type == þ: length is code in next 8 bytes NULL has a special value. If the buffer starts with û then it's a NULL and we return None as value. Returns a tuple (trucated buffer, bytes). rr+rNéúéüééýr#éþr©r)r rÚlsizeÚfstrrrÚread_lc_string«s  ,r<cCsg}ddddœ}t|ƒ}d}||kr†||}|dkrdS|dkr*| d¡|d 7}nX|d krF|}| ||d ||d …¡|d |7}nJsz"_digest_buffer..cSsg|]}dt|ƒ‘qSrO)ÚordrPrrrrSKs)r ÚstrÚjoin)r rrrÚ_digest_bufferGs rWécCsN|r|r|dkrt|d|…ƒ}nt|ƒ}t|d|ƒdStt|ƒƒdS)z2Debug function printing output of _digest_buffer()rz: N)rWÚprint)ÚabufferÚprefixÚlimitÚdigestrrrÚ print_bufferMs  r^)NN)NrX)Ú__doc__Ú __future__rÚ__MYSQL_DEBUG__rÚcatch23rrrr!r$r&r(r*r/r3r<rErIrJrMrWr^rrrrÚs*        5 )