ÿØÿà JFIF 

  
 
  ÿÛ „ 
 !.%+&8&+/1555$;@;4?.451
4,$,44444444444414444444444444444444444444444444444444ÿÀ  á á
" 

ÿÄ   



           
 ÿÄ ? 
    
 !1AQaq"2‘¡±ÁðBRbrÑá#‚’¢²3S CñÿÄ 
 

             
ÿÄ ! 
 
 
       
!1QAa‘2ÿÚ 
  ? 5˜Z¯V¦cø)›t/? z¨±>Õ5€¶‹Á¤·¼z¼Ü¬+ñ®v¤¨_ˆR­BFn©—˜ý®ç̝P8gýt·ÉSTŦˆìät?þé¼íìN/Þa)ì–í6ô…
Ï¿øÃj´¿KÇü]ÿ ªô¹-eKànëÕHTx}ýSÜ›ÿ ”7Ø×&µ<¦  ¥ÑO¶[Ù¯ä¨ÞÃÿ PZ-¬;#õ|•
oaÿ ©CìÞz3˜öː/¤­ñTûIØ}š^   mÓ%ªxˆ¥ÉŸu=Z+ISe¿45™¼u;ú&WØ÷€æßQ™®{|
íx*TC“#ZŠìZ§²‹ 6pv…³¿¡äª*áZÐ%ÒOáˆo"x«OHk
w±æ+¬V(kMúŸ5Vö«$ ÁrÏbàb57/luR ¸ÑÛj Òµì`Ðœq­û žICÀ
Ê•©4€Âcà¨Ï€O´<èÐ:›ù(Ë^L8þ‘ÍÌ#¸Ð_Ì©ÙK(Öz 4¬û+¸;ü’V’84‘¬ÃŽ:[â‡ÔÌáõp¢~§ªlæ£ö{®G>J¼"°‡7¯ÆÉèßû ‹É‹§ÁòÃýâßî
^ƾÙõ‹×óH#«LP½ïX=xÑÍ$|W?•~•îëÔ©ª‹
{ÝT…Kÿ ”hûâá)J*ö˜–ÔU;iÇ€/ ÆþjóZ\ýwØ=Ìm
ºèËL9 ýè
Æð/¨’¥öo=nË.%Îì   ŽÕ¯È|{Oj²ƒE6e/ßdÄõ²Ìâ1O®ò×TsəԸhOMýíMˆ¿¼H˜l²,7Â¥#MF/Úf°Ö½± ¸–dr‹NýÊ íjqx{œÉ ä-È    ¦
øÄër¨q°ð
†nцýÑÄÆ’mä…n<0È™;ÁÝá¯ÁZƒ7FÀmì­ É&9ˆîéi¶ùN§Y•ÃZãAâ?•‡©‰ , ó¾IŸŠc1 4â&y­&pŠ­6;M À 0¹qç»p.á …ŸÅáK@<u %Ü6ÓtIÌpÓr»söfeÁ0O…­´Kƒ&ñ™\©<+,~)‹
ºHÐ*×µ&†ž‘Æ÷ÚŸ
1ßjC5Oh´‡›

Ø×ë æâ“Þà

ÒT]§n{ºöB³ ¦ ̹Â8Êï¦MÉ<„¨s¹¶ì7Ì”æR$Ncà! /éþäRM÷Gƒ¿É$
¦oà>%6·y6ƒ‰3?”úºŽ‰éX5ªPT §µ!=Mž«Ú½‹ÅgÂSâÉaþÓoö–¯ÁÔìR>5éÿ üs¶ÆUcÌ  kÇR
]ÿ ù¬¼«VŽ;Â|‡~¢¦”ÏÅ°æ
{L™Õ°Óv¹ò¸írŽ¡×¢CÃ!íVÕ {¶»sŒNPg/
"uÕbkm²“$ďå¿é¹§°½æz¯6 †s¿!s–wÚÝ“™Œ°.ûj>·+™Òa…©Œ&rÝÎtÛë긪Ît’LAVp%c Úý[ÄzJ¾ÇàXXç@˜ó<êL]·T˜¾¥1Ó©V‡g´æ½¦Ý@¹óø!_@´ÞâSÁ —S3™•& ]@JHÚý©ZŽ €×æÔr»Áf!‡yÞ4Mv*èÓã_{‘åóUuљØ«Oïé*®EvÑ
Œ÷‡U \"㪒ÍK+À 4“M¡ï:0¥5í!'<@î´”>Ç»&Z–ïCCV˜Ì5Šo&îhè.žû
|ÓK©h$s6KìŒëã)¹hI¦GïOåóI;ììü#É$Š0…Ææ¥TØ.5­¾gn´ “ÂÖ\:hœ89G)J@„}œ:’Ò{/Š"¦_Æ×7Æ3VÇŠÊa]ÚŒÙ€Ä–=®uÁßâACZƒ§§£Qnâ:«,×{tyø¬iÛcœÜÄ€H½ÄÍCk´÷šß
.W'b¤Íåh]÷€=,Žv×cÚEÚHXJX¶îo¨FÒtèöŸ>ªª6[J®Fµ£sGÁeqõfe\íjÒÐïÄÐGˆe1Ø‹.Ø”‘Ëuø
Y­ˆÜŽG|zùªüMpDnQWÄ”%JŠ™)â*p@Örš«ÕT2Ð%ˆG#ª„
·¤!°ŸOTÂT¸aÚ%4&h™LµšØüÐ.F¿²ÐÞ_Ç‚¾ÅÃaÜ÷09Æ 
q€öy˜v‡85õN÷]¬äѼóS{°_MŽ¬úÔ#°Ç¸0åÞè2ëôPcvÆw9®ií1Ä8F™˜à‰´+‰Ik1òÝ7“Ñ×ÒsÝ\x‚h`ÞÑ`ó"|µEcý£n˜h`}GÞ  !±ù²Ápü²
ß6
0ïi󜵩SÈÇ7˜-ÕURO˜¦´f$ªž-Í6(œ}<„ éc øs]ŽŽ„*—¾
ìdŽ„)méª\¿êÎIg¾ØÞ~I#C/¼¼´EÁÈŽi8“©õådô·>euä ƒ'Ê×लR1ÉJE1ÐAát`t;ÇР%Ý<‡¥„ÍÆ`×Oyó)õiI€ñQaŸ4Ûù\áàaÃÔ¹HÃu¹*k€¦<„eS‡&õÏ
B!ŽhüÞ`yj}mªf×\¿
Ç~æ­9‡û\՞Ǖg²1Žû5V7 !àöšm°
c`ܬøÇìµÒ'P"?…´Ö,"§^•õŽ¨sÔ)6˜sæéÍR¼
ò|Sl”‹7 nPW

Gòú÷½§O¯‡„l¡kSÞŒr½PÊ@æ¢pŽ-mÿ #Ÿ˜Àº¶Áä¦;ïÔæ$1££`“Õ>„—·ž)ß
ð
³ñ#Ï Ô$¶œ‰ÊE‹À;÷º
¯«P:Ñ”8–IÊtpÞ3ª“>ê“þës4ò2OÏÕ­±zô†Õ§‰.÷ä¸;¿˜“'œ›žª}«Œ{ª±Ì 9ÔóÞÕ‡0
$íWV3Üì¬
—@kÝ4@¿r¼±½¬™›?øØæ´'Áé®CË3-g$˜ö‡×auÚi´Žp/êÛæF›Ú2v‹ã¿¿,nB1̨ƃqÞa5͝@&Æû“él÷ \C²½UÍc ¯k×¢U
ÖéQå™—-r    wô ÞÏ<Ò=&=ÿ Ôê Òêˈt,i—;LîÜ á¸*ÚÃ1$êL•LÍ <É)ýÐà’
;F™{ƒ™˜€&'}‚ãÄK`¡ÞT@I;®žZóè‚s’7®°›+§O­Åq©é»²9<Ô
J ¼9O’HL»Ùïì¸rk¼Ž_ý‘TŸu[²ßÚŒ·ü÷B%¯E ŸÔX5êO´Ç•€’I0 É<mÆÈJoúáõóQâØòÙaÙt:  ·=|Ôaz]a1cÉŸ1
4˜à3΍}GFøí7/B«vεŕL=Ðr1ÕšnwH›óÞ¢ºö{)´4€æZç^ÿ yÑ:_([¿ipqQÊ^âÆe;»½“¦º|¢ÀTçèrú1”óTÃ’u¦CG¤ ¡
Š­7ë

·i“¿z»n
ö¼±ù^ö<‹çu7¸ÈlvZðÛAUXje•
dLÞH ÚosÇr`È™‡pÊeÇ4@x7´)ö†Ótœ~i‘Ï[x@äUÃæ­m·e´x
°t¸·²5'žªža   =ÖÌåzϘ'-´ˆpž3§ò‡k  Ý'‰ýÑï¦3ºdè“{eiÔõNkîšECEΠ¥ÃT9ãqÃâŸîɐ8z \?€    >JX` 
ñ¹õ%;µŸD‘«´€àwÒ™UûئžÖö\×®×´8 ½‡ºÐÆÓ§?Àkmœ=;d5*@-ì0F Rªýš[Ü6âö̃ڸr*KA9· u*µæ£?U¸Âêí†8@¦X4 e-ò„0s{ HâUpU?¼mñRa°®a%Ð'tÉ×’\¾ÊÉ]t›h>·(Ë@R¼¡Ãt h}’O÷au<+nT…Ö…MӐ??Óe95 q>í/;&JSû °¯ÊéÞøƒ*Ã2½Ài&:nôUl=¾¿5eˆ3”ñc|Ú2V”>„»&eE;«ÚäC
p¢Ûúy 9š[ŒÌx¼擼A&DåÒ¯ˆ¤ÀÌ;"˜ÏQä¸åhÊ}Ûq«Û0WžÒ|»€ø®öCm5•\ÇÀ§Pe3£]0ÃàLDÉ‰1øªxjgwT‚÷¿LΨK‹›ùs—xˆÜ±µ
kæ¸f‰‰ÜGk/LÛØ6d9ò¶ùA{ƒA3š/¬D¬khÓk‰`˜"㯒r¿±Óã jx‡°e}<Ñø\3y:'À•/h½Í€Ç4~g ?Û(¼]v‘ªlKÎâ~?O‚W%{Ì:“'©úNq¾›úo(X’¥¯ˆ
nFê{Ç€ü?º'ë
ø‹ì
Þ09ŒÌç9Æ —ËC`j@ÓÄ(+a‹un¸#ÂꟋ{K`‘ÑÍÍ'à´»/Û,KW;Þ4²þð ï Nm|~fGÏ(…³Ã)«1ö­Õ
¥‡¨©ƒÃ™ü-s=à=U66Ï«Ýc蓦W¹íž®›nÔ%êÇìŒ<#Ü×84ån®Ð ÒåOC`  ñânÑs‡¢ç 1õ%Îhì½Ã½® e:ݼUZo
™`  
ÅZŸŒÊ«ê1ÏÄo$q¹Þ€©ˆhÐÉä¯ñ[!…Ú˜àJ:x2$Íß&PåT£6ç—
‡Í*4Ýšçjÿ ‰É nófÐ ó(L5C•åÆ\rMÒ@ò
}y-W}™üýVù—ú¢=Ù”c®‘< M ž
´Phr¦©TD ‘ù.$´÷O‡‘V2Æò.=IUŒ=ž‡â¬i™aþÓåÙ?òUø'ØÖ•.~* šTŒ!•-×áºTâ®ä#õü'´ eýlYÅÓeÕKÂrT"CÚ@u!Óxƒ{š3€}1¿(r}%«nËamjÑ%ÑNEò
v  ˜à  σöK³,*º.àzù¨™Ó ÚçâU¦*¿ 9{%Ö¹ njûdaXöb)  kÛƱûÓ\°M7ˆÂ=û›ç¿Ã‚­V»Cg–8ÙêE-j)k$º`Ã-ùEýeBÆÇ]c¡°ñty&Òd0nõ'¡W+ƒ*|–ø<K\%¦cÏÄ#N,Úú‘¤òÒÛõ ’¶§‰Ì
ú•dçb31Ð\7‡ëÚw82
‰KÝkÚñ'¢Ž…[&¼ÌAÔzHàP *اoßreÁY¥Ñ¾ãE|&QbKg]ã„þê*b;R³Öi‹  ±î$£ÈTm¶k÷ˆ
¦»Ù¹i¦¨6 h%Á'Ú
J   \F±â+‹b/Å9ñå5Àë­nˆRv«¯#„&î„$º’@:‘Ôrø+,àq‘秬*Úg´>µFa\GQªEAÔp5\Ǽ·¼Ç8·õ -â§Ú[
‡
uZeÖ 3}×d'+¹:ð+K†Û®s!Ï$úe€<Û”x)1»a­¡LC]¸µík…ÚàA»AYº{†ªS[¦5HÒ7ù
--,ísòDØ€èk   ÞÀîÜò@â(  ËNˆë›4ô½•/¦o‡€Û7
ê•ÆêòðÜy
'Án½µ á˜ݦ  ndeo…[ì¶Ê,¥R³Ä=À±—–ß;£™´ñSâ*g§”ïaið‘Jå~™ÓÞß³Õ¢»8x埒²52>AÊb&-÷\7´éÄù€T˜,w;3{ï˜k…à¹ÄqÀ«œ{
€\
ˆ¾[´¨јr &Úé„Ívˆ±8†¿]|¬ņ4I×pÞS1ÈÖz‰#Ìv‡G!YNògñ:màTz¢Ý1ô©^O=~ë|5Bã™ç•¼µõ•bÆ@úÕS¬ÈŒ#¬zünrŸ
û”
Z²•ï›èðV"ÁHÚý©wÝ €7¼Ìu1hÑa3Éä û f$o¿É ™Ú›ÝçnpÒ3äÌ3†Í§,Äï]$‰/pê†«À¼
¸e9­Æê_C]žƒ·ý·frÁN«,E=›Çq
-‰öŒ:aÏ¿±í&£Í:-}
84‘ÿ eƒQÑeëSsuiA
³g㟥ú£?ÿ ʼn*”“÷aühe:ÊWa@ÒÞk±eØ]
F Ô—r.åä˜@ö¥ªZoÐýYL·¥S²G/‡ñ
<~*ZÆ´è>JlòàÛƽÿ 窘ìGN¢:I®KšJp/`íIÁÀõ#Ä-€ö­šµŒoF4|ÆQØÆ@Ì|£Ô…¢À{9˜è½Üó›€ôYÒÎYsið;ís¤€à²ˆ‚4qÉVŒI$  ‰"°   æµ8cXGjœˏ¡Aâý•ËÜ¢ûïe·çLx']á"oÅÎê3¯Ç—¹”ó0nå‚âg{Œñ>
S´˜îè°g238‚ãköÝfÚd´6Ò€;ò÷±¢™¼›º¢Æ'¥Ðx'e¬ç
]bÈÆV¢ó‹kýBO
ðÊâ$Ÿ!×T
3Mýמ
žìٍàÌü‘8÷€àæØ8æ©6‰©L´«…oãpð„~Çk‰!ñ;‹”ÛžÍ àž±z Ÿôû øŸÝužÏ;ÿ #|u6™Þ¬ÚˆÐõA4¶â|ôl|Ê2ŽÇ¤ÝÅÇY.<#Aí.k§hóF‚”Y;
M½Ö4hŸ4&›­¿tès´%FìL¥£Ãk‰ÇT¤haÁ¤ÚxfÉ`ÑìË›>i 3t‚:,–+^÷´–{Û–Nxi"x‘Ûg
î¨>¥Õ܁ùZH,2Û“:8xÊ¢Çí9.É-Ìâã-=çjwµS˜dütžçwýGòú®®ûº_ˆýx$–¡ãøO
EÚÛÏ÷R„×w+3£Á£öUMyR²¹âŒ°š›¸Ñãò9§Ó_Dl+Ùßc›úšGÅÌc†Ž!Ko=¶.‘Îÿ c²(2®V mª.ÿ ¹B›¹å ù„öŸSV>™ü¯$y:G¢Z×àøúdî¹û­·ýÇ´:•c LÍõi_‹ö+ÎæGÊè>OŠ•äž´§Þ{X}¨1ÚTc›»Qþ•êô°t¿OP?eæ~É{5]•ÙR£r5†nZ\ã@
&îJõ ¾àC°þV>fé¥/ü5ñÊIº_é5;e­h<@
Ä&æÃëE%;X,ÒãÆÞ`Oò¦kŸm#˜!ÀyÄ¢|
óLšò¥Ä`
¶R=|ÈCâh5ò3DˆïF†ðÒ#ÅìÛœ?¸yhBãœí
ZxßÎÄhºRK„`Þödvײ™ÀÈÑÒgŒuYw³%†ƒÓzõ ÖÏp‚dH®¦A´ù§»ÓÇMæ~)ˆð‡û:ù&Ä •vGD´À 
n
Ý
‡¼Ö8Fö   óáà£~Ë¥x`oK|Ä?fxiØü%pìR>éò+Û±éÎ>núlFŤ'tq8LZÏvÃ?„¡ß±È⽆¯³íü@x|PöUäèØã¡ð‚ŒAìÏ"vÍwóŸÍ{ ý0.z    È•Ö{,N¡£¡ŸKÕÙž>Ýœþ ÍÀ<n^Àïe€Þgn¹”ÜiQê
9Ú±‡„è]ËA¿‚MJìiÓxŒn-ÄS6!ÓæÑû*jÎWøìšÇ뙦gj~+?\,Ö7ÁÕÊ”G™q6TF)óCç<ÓšÂUé†gW=àà“hóR³ÊQì<!÷ÇpR1¯u„De,è­vvâDß~žHå‰ú£Kìní¢ÐçÅÄÅ¥Ü÷
±ÃìÇžûƒz\þÞ¨-•‹
€

¸+¶n¿^
?†[ÖWóÒX¸,0Ø:l?‰Âý«ÿ ·Dc+fÔ[ƒ›ûªšx«kæž1KI…<#'nž¶\±íÎ8¤ìK@’@J¥v)º[Ž±Æå´¼
½Ý¡ç¯ÐO¥ø®è•Óȱ߿wša©“œt‡4îyªœ&+1ÏØ:‚æƒ=/ꎔ`hm
“=©‹]°g}ì€DgUƒ8¤qCˆãáÅ,‡Ô¬ñ10HÑDÂbáÂÿ Œ»v·:uòB6»áp‰>°<×EA!Å‚D™IúOÍ
¡>ôG}Â`ÍßkÜL™Ž  Þð™
{IøF²
¹òQ3&!ÃÂÞz.d&Ï-sH¸,Ôõ˜ŽP€
77ˆÝ¼ÊëÜw   =cÕ
Ú,ØÐ5ÎYÐ)ì´öœgŒ[¤
ßv㙑8心>h]§µháYš£²ºÑ.{Ï7Sð•?´~×SÃKýJÛ˜
™Íäiúu<µX¶1õ^kâçIÑ£sZ4h>j*ÔšD:4­¿_ ÷¸
Õxæÿ ¸?Mù _•­ÊÐ ä ÷ý ÑwL
œ­ïnTkÛUÍN©ë:¦fV ¶ÜÔÜMªÅâA½–¿R×TXš-%iTÊT•‡Ù‚JôϐZxWÑè‰f‰òG º
×Õû2aZ7OU3[“×AT–ÞŒ…-‘¤”Ì 
ì&(ˆ¿­•ƒkï’:ðY¦W‘Å)“†‘˜³Åtcø˜ñTÂwÚÇ4
|üLÇªí–v-
qˆèU
qPE.†â‘˜µ Æ,ÐÅs]8¾„oúÑ i>ÜxxÈó)ƒ ´æÁâØ$À‰vžŸf$Ž|ãw;ÀÁIJ»b`
{¦Ó¤Ú$©YÀ‘n@Óïž«9J¼êG   m¤
ܯ¹ÌW4€ÐÒÅÛ‡#褕Ÿn-?í|с¥÷Ú¹¬'´ÞÜ9ÓK`hê£SÄSà?7—Wí_´…óB›»:=Ãïq`<8ñÓŒÑlú2d¬ê³£hÖ[l|$vÝro~'R®‰§°ñmY ͧäP
|PUª¹·:3Œ[Û{Xÿ ºâ@‚W–Äé u‚ ¯´*=íή.pûÒdt @
G‰¬ s¸    ëÉücr ÞæѨÊ@>¤¢Ö±.Þ'¯°ÌME[YéïĵÂCå½
Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”
빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢
Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾
á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ]R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß
¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ 
àfPìð  .wFšir´þ’2_Y
*Æ€x\«
ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1    2Ž‰$€$I$#‰SÞ’H
ë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙa

�3�g-�@sVdZd
dl
Zd
dlZd
dlZd
dlZddgZ	dZ
eZGdd�dej
j�Zdd
d�
ZdS)a�A dumb and slow but simple dbm clone.

For database spam, spam.dir contains the index (a text file),
spam.bak *may* contain a backup of the index (also a text file),
while spam.dat contains the data (a binary file).

XXX TO DO:

- seems to contain a bug when updating...

- reclaim free space (currently, space once occupied by deleted or expanded
items is never reused)

- support concurrent access (currently, if two processes take turns making
updates, they can mess up the index)

- support efficient access to large databases (currently, the whole index
is read when the database is opened, and some updates rewrite the whole index)

- support opening for read-only (flag = 'm')

�N�error�openic@s�eZ
dZeZeZd+dd�
Zdd�Zdd�Zdd	�ZeZ	d
d�Z
dd
�Zdd�Zdd�Z
dd�Zdd�Zdd�Zdd�Zdd�Zdd�Zdd�ZeZd d!�Zd"d#�ZeZd$d%�Zd&d'�Zd(d)�Zd*S),�	_Database�
ccCsL||_|d
k|_
|
d|_|
d|_|
d|_d|_|�|�

|�|�

dS)N�
rz.dirz.datz.bak)�_mode�	_readonly�_dirfile�_datfile�_bakfile�_index�_create�_update)�selfZfilebasename�mode�flag�r�'/opt/python39/lib/python3.9/dbm/dumb.py�__init__0s








z_Database.__init__cCs�|
d
kr@|j|j
|jfD]&}zt�|�

Wqty<


Yq0qztj|jddd�}WnZty�


|
dv
rn�tj|jddd��}|�|j�

Wd�
n1s�0


Y
Yn
0|�	�
dS)N�
nr�Latin-1�
�encoding�rr�
w)
r
rr	�_os�remove�OSError�_ior�_chmod�close)rr�filename�
frrrr
Is











0z_Database._createcCs�d
|_i|_
ztj|jddd�}Wn"tyD


|
dv
r:�d|_YnZ0|�D
|D].}|��}t�|�
\}}|�	d�
}||j
|<qPWd�
n1s�0


Y
dS)NFrrrrT)
�	_modifiedrrrr	r�rstrip�_astZliteral_eval�encode)rrr"�line�key�pos_and_siz_pairrrrr\s













z_Database._updatec
Cs�|jdus|j
sdSz|j�|j�

Wnty8


Yn0z|j�|j|j�
Wntyb


Yn0|jj	|jd
dd��L}
|�
|j�

|j��D]$\}}d|�d�
|f}|
�
|�

q�Wd�
n1s�0


Y
dS)Nrrr�%r, %r
)rr#r�unlinkrr�renamer	rrr�items�decode�write)rr"r(r)�entryrrr�_commitps









z_Database._commitc

Cs|jdurt
d
�
�
dS�N�"DBM object has already been closed)rr�
rrrr�_verify_open�s


z_Database._verify_opencCspt|
t
�r|
�d
�
}
|��
|j|
\}}t�|jd��$}|�|�

|�	|�
}Wd�
n1sb0


Y
|S)N�utf-8�rb)
�
isinstance�strr&r5rrrr
�seek�read)rr(�pos�sizr"Zdatrrr�__getitem__�s









(
z_Database.__getitem__cCs�t�
|jd
��\}|�dd�
t|���
}|tdtt}|�d||�

|}|�|
�

Wd�
n1sp0


Y
|t|
�
fS)N�rb+r
��
�
)	rrr
r:�int�tell�
_BLOCKSIZEr/�len)r�valr"r<Znposrrr�_addval�s






(
z_Database._addvalcCsNt�
|jd
��$}|�|
�

|�|�

Wd�
n1s80


Y
|
t|�
fS)Nr?)rrr
r:r/rF)rr<rGr"rrr�_setval�s



(
z_Database._setvalcCsd||j|
<t
j|jd
dd��4}|�|j�

|�d|
�d�
|f�

Wd�
n1sV0


Y
dS)N�
arrr*)rrrr	rr/r.)rr(r)r"rrr�_addkey�s




z_Database._addkeycCs�|jrt
d
�
�
t|
t�r$|
�d�
}
nt|
ttf�s:td�
�
t|t�rP|�d�
}nt|ttf�sftd�
�
|��
d|_	|
|j
v
r�|�|
|�|�
�
n^|j
|
\}}|t
dt
}t|�
t
dt
}||k
r�|�||�|j
|
<n|�|�
|j
|
<dS)N�'The database is opened for reading onlyr6zkeys must be bytes or stringszvalues must be bytes or stringsTrA)rrr8r9r&�bytes�	bytearray�	TypeErrorr5r#rrKrHrErFrI)rr(rGr<r=Z	oldblocksZ	newblocksrrr�__setitem__�s(




















z_Database.__setitem__cCsD|jrt
d
�
�
t|
t�r"|
�d�
}
|��
d|_|j|
=|��
dS)NrLr6T)	rrr8r9r&r5r#rr1�rr(rrr�__delitem__�s







z_Database.__delitem__c

Cs.zt|j
�
WSty(


td
�
d�Yn0dSr2)�listrrOrr4rrr�keys�s



z_Database.keysc

s ���
�f
d
d��j
��D�
S)Nc
sg|]}
|
�|
f�qSrr)�.0r(r4rr�
<listcomp>��z#_Database.items.<locals>.<listcomp>)r5rrTr4rr4rr-�s

z_Database.itemscCsPt|
t
�r|
�d
�
}
z|
|jvWStyJ


|jdurDtd�
d�n�Yn0dS)Nr6r3)r8r9r&rrOrrQrrr�__contains__�s









z_Database.__contains__c

Cs.zt|j
�
WSty(


td
�
d�Yn0dSr2)�iterrrOrr4rrr�iterkeys
s



z_Database.iterkeysc

Cs.zt|j
�
WSty(


td
�
d�Yn0dSr2)rFrrOrr4rrr�__len__

s



z_Database.__len__c

	CsDz$|��
Wd|_
|_|_|_nd|_
|_|_|_0dS�
N)r1rr
r	rr4rrrr 
s


z_Database.closecCs|j�
|
|j�
dSr\)r�chmodr)r�filerrrr
s
z_Database._chmodc


Cs|Sr\rr4rrr�	__enter__
s
z_Database.__enter__c
Gs|��
dSr\)
r )r�argsrrr�__exit__
s
z_Database.__exit__N)
r)�__name__�
__module__�__qualname__rrrr
rr1�syncr5r>rHrIrKrPrRrTr-rXrZ�__iter__r[r �__del__rr_rarrrrr#s2


	%rr�
cCsTzt�
d
�
}t�
|�

Wnty*


Yn0||@}|
dv
rFtd�
�
t|||
d�S)aEOpen the database file, filename, and return corresponding object.

    The flag argument, used to control how the database is opened in the
    other DBM implementations, supports only the semantics of 'c' and 'n'
    values.  Other values will default to the semantics of 'c' value:
    the database will always opened for update and will be created if it
    does not exist.

    The optional mode argument is the UNIX mode of the file, used only when
    the database has to be created.  It defaults to octal code 0o666 (and
    will be modified by the prevailing umask).

    r
)rrrrz)Flag must be one of 'r', 'w', 'c', or 'n')
r)r�umask�AttributeError�
ValueErrorr)r^rrZumrrrr"
s








)rrh)�__doc__�astr%�ior�osr�collections.abc�collections�__all__rErr�abc�MutableMappingrrrrrr�<module>
s