PNG  IHDRX cHRMz&u0`:pQ<bKGD pHYsodtIME MeqIDATxw]Wug^Qd˶ 6`!N:!@xI~)%7%@Bh&`lnjVF29gΨ4E$|>cɚ{gk= %,a KX%,a KX%,a KX%,a KX%,a KX%,a KX%, b` ǟzeאfp]<!SJmɤY޲ڿ,%c ~ع9VH.!Ͳz&QynֺTkRR.BLHi٪:l;@(!MԴ=žI,:o&N'Kù\vRmJ雵֫AWic H@" !: Cé||]k-Ha oݜ:y F())u]aG7*JV@J415p=sZH!=!DRʯvɱh~V\}v/GKY$n]"X"}t@ xS76^[bw4dsce)2dU0 CkMa-U5tvLƀ~mlMwfGE/-]7XAƟ`׮g ewxwC4\[~7@O-Q( a*XGƒ{ ՟}$_y3tĐƤatgvێi|K=uVyrŲlLӪuܿzwk$m87k( `múcE)"@rK( z4$D; 2kW=Xb$V[Ru819קR~qloѱDyįݎ*mxw]y5e4K@ЃI0A D@"BDk_)N\8͜9dz"fK0zɿvM /.:2O{ Nb=M=7>??Zuo32 DLD@D| &+֎C #B8ַ`bOb $D#ͮҪtx]%`ES`Ru[=¾!@Od37LJ0!OIR4m]GZRJu$‡c=%~s@6SKy?CeIh:[vR@Lh | (BhAMy=݃  G"'wzn޺~8ԽSh ~T*A:xR[ܹ?X[uKL_=fDȊ؂p0}7=D$Ekq!/t.*2ʼnDbŞ}DijYaȲ(""6HA;:LzxQ‘(SQQ}*PL*fc\s `/d'QXW, e`#kPGZuŞuO{{wm[&NBTiiI0bukcA9<4@SӊH*؎4U/'2U5.(9JuDfrޱtycU%j(:RUbArLֺN)udA':uGQN"-"Is.*+k@ `Ojs@yU/ H:l;@yyTn}_yw!VkRJ4P)~y#)r,D =ě"Q]ci'%HI4ZL0"MJy 8A{ aN<8D"1#IJi >XjX֔#@>-{vN!8tRݻ^)N_╗FJEk]CT՟ YP:_|H1@ CBk]yKYp|og?*dGvzنzӴzjֺNkC~AbZƷ`.H)=!QͷVTT(| u78y֮}|[8-Vjp%2JPk[}ԉaH8Wpqhwr:vWª<}l77_~{s۴V+RCģ%WRZ\AqHifɤL36: #F:p]Bq/z{0CU6ݳEv_^k7'>sq*+kH%a`0ԣisqにtү04gVgW΂iJiS'3w.w}l6MC2uԯ|>JF5`fV5m`Y**Db1FKNttu]4ccsQNnex/87+}xaUW9y>ͯ骵G{䩓Գ3+vU}~jJ.NFRD7<aJDB1#ҳgSb,+CS?/ VG J?|?,2#M9}B)MiE+G`-wo߫V`fio(}S^4e~V4bHOYb"b#E)dda:'?}׮4繏`{7Z"uny-?ǹ;0MKx{:_pÚmFמ:F " .LFQLG)Q8qN q¯¯3wOvxDb\. BKD9_NN &L:4D{mm o^tֽ:q!ƥ}K+<"m78N< ywsard5+вz~mnG)=}lYݧNj'QJS{S :UYS-952?&O-:W}(!6Mk4+>A>j+i|<<|;ر^߉=HE|V#F)Emm#}/"y GII웻Jі94+v뾧xu~5C95~ūH>c@덉pʃ1/4-A2G%7>m;–Y,cyyaln" ?ƻ!ʪ<{~h~i y.zZB̃/,雋SiC/JFMmBH&&FAbϓO^tubbb_hZ{_QZ-sύodFgO(6]TJA˯#`۶ɟ( %$&+V'~hiYy>922 Wp74Zkq+Ovn錄c>8~GqܲcWꂎz@"1A.}T)uiW4="jJ2W7mU/N0gcqܗOO}?9/wìXžΏ0 >֩(V^Rh32!Hj5`;O28؇2#ݕf3 ?sJd8NJ@7O0 b־?lldщ̡&|9C.8RTWwxWy46ah嘦mh٤&l zCy!PY?: CJyв]dm4ǜҐR޻RլhX{FƯanшQI@x' ao(kUUuxW_Ñ줮[w8 FRJ(8˼)_mQ _!RJhm=!cVmm ?sFOnll6Qk}alY}; "baӌ~M0w,Ggw2W:G/k2%R,_=u`WU R.9T"v,<\Ik޽/2110Ӿxc0gyC&Ny޽JҢrV6N ``یeA16"J³+Rj*;BϜkZPJaÍ<Jyw:NP8/D$ 011z֊Ⱳ3ι֘k1V_"h!JPIΣ'ɜ* aEAd:ݺ>y<}Lp&PlRfTb1]o .2EW\ͮ]38؋rTJsǏP@芎sF\> P^+dYJLbJ C-xϐn> ι$nj,;Ǖa FU *择|h ~izť3ᤓ`K'-f tL7JK+vf2)V'-sFuB4i+m+@My=O҈0"|Yxoj,3]:cо3 $#uŘ%Y"y죯LebqtҢVzq¼X)~>4L׶m~[1_k?kxֺQ`\ |ٛY4Ѯr!)N9{56(iNq}O()Em]=F&u?$HypWUeB\k]JɩSع9 Zqg4ZĊo oMcjZBU]B\TUd34ݝ~:7ڶSUsB0Z3srx 7`:5xcx !qZA!;%͚7&P H<WL!džOb5kF)xor^aujƍ7 Ǡ8/p^(L>ὴ-B,{ۇWzֺ^k]3\EE@7>lYBȝR.oHnXO/}sB|.i@ɥDB4tcm,@ӣgdtJ!lH$_vN166L__'Z)y&kH;:,Y7=J 9cG) V\hjiE;gya~%ks_nC~Er er)muuMg2;֫R)Md) ,¶ 2-wr#F7<-BBn~_(o=KO㭇[Xv eN_SMgSҐ BS헃D%g_N:/pe -wkG*9yYSZS.9cREL !k}<4_Xs#FmҶ:7R$i,fi!~' # !6/S6y@kZkZcX)%5V4P]VGYq%H1!;e1MV<!ϐHO021Dp= HMs~~a)ަu7G^];git!Frl]H/L$=AeUvZE4P\.,xi {-~p?2b#amXAHq)MWǾI_r`S Hz&|{ +ʖ_= (YS(_g0a03M`I&'9vl?MM+m~}*xT۲(fY*V4x@29s{DaY"toGNTO+xCAO~4Ϳ;p`Ѫ:>Ҵ7K 3}+0 387x\)a"/E>qpWB=1 ¨"MP(\xp߫́A3+J] n[ʼnӼaTbZUWb={~2ooKױӰp(CS\S筐R*JغV&&"FA}J>G֐p1ٸbk7 ŘH$JoN <8s^yk_[;gy-;߉DV{c B yce% aJhDȶ 2IdйIB/^n0tNtџdcKj4϶v~- CBcgqx9= PJ) dMsjpYB] GD4RDWX +h{y`,3ꊕ$`zj*N^TP4L:Iz9~6s) Ga:?y*J~?OrMwP\](21sZUD ?ܟQ5Q%ggW6QdO+\@ ̪X'GxN @'4=ˋ+*VwN ne_|(/BDfj5(Dq<*tNt1х!MV.C0 32b#?n0pzj#!38}޴o1KovCJ`8ŗ_"]] rDUy޲@ Ȗ-;xџ'^Y`zEd?0„ DAL18IS]VGq\4o !swV7ˣι%4FѮ~}6)OgS[~Q vcYbL!wG3 7띸*E Pql8=jT\꘿I(z<[6OrR8ºC~ډ]=rNl[g|v TMTղb-o}OrP^Q]<98S¤!k)G(Vkwyqyr޽Nv`N/e p/~NAOk \I:G6]4+K;j$R:Mi #*[AȚT,ʰ,;N{HZTGMoּy) ]%dHء9Պ䠬|<45,\=[bƟ8QXeB3- &dҩ^{>/86bXmZ]]yޚN[(WAHL$YAgDKp=5GHjU&99v簪C0vygln*P)9^͞}lMuiH!̍#DoRBn9l@ xA/_v=ȺT{7Yt2N"4!YN`ae >Q<XMydEB`VU}u]嫇.%e^ánE87Mu\t`cP=AD/G)sI"@MP;)]%fH9'FNsj1pVhY&9=0pfuJ&gޤx+k:!r˭wkl03׼Ku C &ѓYt{.O.zҏ z}/tf_wEp2gvX)GN#I ݭ߽v/ .& и(ZF{e"=V!{zW`, ]+LGz"(UJp|j( #V4, 8B 0 9OkRrlɱl94)'VH9=9W|>PS['G(*I1==C<5"Pg+x'K5EMd؞Af8lG ?D FtoB[je?{k3zQ vZ;%Ɠ,]E>KZ+T/ EJxOZ1i #T<@ I}q9/t'zi(EMqw`mYkU6;[t4DPeckeM;H}_g pMww}k6#H㶏+b8雡Sxp)&C $@'b,fPߑt$RbJ'vznuS ~8='72_`{q纶|Q)Xk}cPz9p7O:'|G~8wx(a 0QCko|0ASD>Ip=4Q, d|F8RcU"/KM opKle M3#i0c%<7׿p&pZq[TR"BpqauIp$ 8~Ĩ!8Սx\ւdT>>Z40ks7 z2IQ}ItԀ<-%S⍤};zIb$I 5K}Q͙D8UguWE$Jh )cu4N tZl+[]M4k8֦Zeq֮M7uIqG 1==tLtR,ƜSrHYt&QP윯Lg' I,3@P'}'R˪e/%-Auv·ñ\> vDJzlӾNv5:|K/Jb6KI9)Zh*ZAi`?S {aiVDԲuy5W7pWeQJk֤#5&V<̺@/GH?^τZL|IJNvI:'P=Ϛt"¨=cud S Q.Ki0 !cJy;LJR;G{BJy޺[^8fK6)=yʊ+(k|&xQ2`L?Ȓ2@Mf 0C`6-%pKpm')c$׻K5[J*U[/#hH!6acB JA _|uMvDyk y)6OPYjœ50VT K}cǻP[ $:]4MEA.y)|B)cf-A?(e|lɉ#P9V)[9t.EiQPDѠ3ϴ;E:+Օ t ȥ~|_N2,ZJLt4! %ա]u {+=p.GhNcŞQI?Nd'yeh n7zi1DB)1S | S#ًZs2|Ɛy$F SxeX{7Vl.Src3E℃Q>b6G ўYCmtկ~=K0f(=LrAS GN'ɹ9<\!a`)֕y[uՍ[09` 9 +57ts6}b4{oqd+J5fa/,97J#6yν99mRWxJyѡyu_TJc`~W>l^q#Ts#2"nD1%fS)FU w{ܯ R{ ˎ󅃏џDsZSQS;LV;7 Od1&1n$ N /.q3~eNɪ]E#oM~}v֯FڦwyZ=<<>Xo稯lfMFV6p02|*=tV!c~]fa5Y^Q_WN|Vs 0ҘދU97OI'N2'8N֭fgg-}V%y]U4 峧p*91#9U kCac_AFңĪy뚇Y_AiuYyTTYЗ-(!JFLt›17uTozc. S;7A&&<ԋ5y;Ro+:' *eYJkWR[@F %SHWP 72k4 qLd'J "zB6{AC0ƁA6U.'F3:Ȅ(9ΜL;D]m8ڥ9}dU "v!;*13Rg^fJyShyy5auA?ɩGHRjo^]׽S)Fm\toy 4WQS@mE#%5ʈfFYDX ~D5Ϡ9tE9So_aU4?Ѽm%&c{n>.KW1Tlb}:j uGi(JgcYj0qn+>) %\!4{LaJso d||u//P_y7iRJ߬nHOy) l+@$($VFIQ9%EeKʈU. ia&FY̒mZ=)+qqoQn >L!qCiDB;Y<%} OgBxB!ØuG)WG9y(Ą{_yesuZmZZey'Wg#C~1Cev@0D $a@˲(.._GimA:uyw֬%;@!JkQVM_Ow:P.s\)ot- ˹"`B,e CRtaEUP<0'}r3[>?G8xU~Nqu;Wm8\RIkբ^5@k+5(By'L&'gBJ3ݶ!/㮻w҅ yqPWUg<e"Qy*167΃sJ\oz]T*UQ<\FԎ`HaNmڜ6DysCask8wP8y9``GJ9lF\G g's Nn͵MLN֪u$| /|7=]O)6s !ĴAKh]q_ap $HH'\1jB^s\|- W1:=6lJBqjY^LsPk""`]w)󭃈,(HC ?䔨Y$Sʣ{4Z+0NvQkhol6C.婧/u]FwiVjZka&%6\F*Ny#8O,22+|Db~d ~Çwc N:FuuCe&oZ(l;@ee-+Wn`44AMK➝2BRՈt7g*1gph9N) *"TF*R(#'88pm=}X]u[i7bEc|\~EMn}P瘊J)K.0i1M6=7'_\kaZ(Th{K*GJyytw"IO-PWJk)..axӝ47"89Cc7ĐBiZx 7m!fy|ϿF9CbȩV 9V-՛^pV̌ɄS#Bv4-@]Vxt-Z, &ֺ*diؠ2^VXbs֔Ìl.jQ]Y[47gj=幽ex)A0ip׳ W2[ᎇhuE^~q흙L} #-b۸oFJ_QP3r6jr+"nfzRJTUqoaۍ /$d8Mx'ݓ= OՃ| )$2mcM*cЙj}f };n YG w0Ia!1Q.oYfr]DyISaP}"dIӗթO67jqR ҊƐƈaɤGG|h;t]䗖oSv|iZqX)oalv;۩meEJ\!8=$4QU4Xo&VEĊ YS^E#d,yX_> ۘ-e\ "Wa6uLĜZi`aD9.% w~mB(02G[6y.773a7 /=o7D)$Z 66 $bY^\CuP. (x'"J60׿Y:Oi;F{w佩b+\Yi`TDWa~|VH)8q/=9!g߆2Y)?ND)%?Ǐ`k/sn:;O299yB=a[Ng 3˲N}vLNy;*?x?~L&=xyӴ~}q{qE*IQ^^ͧvü{Huu=R|>JyUlZV, B~/YF!Y\u_ݼF{_C)LD]m {H 0ihhadd nUkf3oٺCvE\)QJi+֥@tDJkB$1!Đr0XQ|q?d2) Ӣ_}qv-< FŊ߫%roppVBwü~JidY4:}L6M7f٬F "?71<2#?Jyy4뷢<_a7_=Q E=S1И/9{+93֮E{ǂw{))?maÆm(uLE#lïZ  ~d];+]h j?!|$F}*"4(v'8s<ŏUkm7^7no1w2ؗ}TrͿEk>p'8OB7d7R(A 9.*Mi^ͳ; eeUwS+C)uO@ =Sy]` }l8^ZzRXj[^iUɺ$tj))<sbDJfg=Pk_{xaKo1:-uyG0M ԃ\0Lvuy'ȱc2Ji AdyVgVh!{]/&}}ċJ#%d !+87<;qN޼Nفl|1N:8ya  8}k¾+-$4FiZYÔXk*I&'@iI99)HSh4+2G:tGhS^繿 Kتm0 вDk}֚+QT4;sC}rՅE,8CX-e~>G&'9xpW,%Fh,Ry56Y–hW-(v_,? ; qrBk4-V7HQ;ˇ^Gv1JVV%,ik;D_W!))+BoS4QsTM;gt+ndS-~:11Sgv!0qRVh!"Ȋ(̦Yl.]PQWgٳE'`%W1{ndΗBk|Ž7ʒR~,lnoa&:ü$ 3<a[CBݮwt"o\ePJ=Hz"_c^Z.#ˆ*x z̝grY]tdkP*:97YľXyBkD4N.C_[;F9`8& !AMO c `@BA& Ost\-\NX+Xp < !bj3C&QL+*&kAQ=04}cC!9~820G'PC9xa!w&bo_1 Sw"ܱ V )Yl3+ס2KoXOx]"`^WOy :3GO0g;%Yv㐫(R/r (s } u B &FeYZh0y> =2<Ϟc/ -u= c&׭,.0"g"7 6T!vl#sc>{u/Oh Bᾈ)۴74]x7 gMӒ"d]U)}" v4co[ ɡs 5Gg=XR14?5A}D "b{0$L .\4y{_fe:kVS\\O]c^W52LSBDM! C3Dhr̦RtArx4&agaN3Cf<Ԉp4~ B'"1@.b_/xQ} _߃҉/gٓ2Qkqp0շpZ2fԫYz< 4L.Cyυι1t@鎫Fe sYfsF}^ V}N<_`p)alٶ "(XEAVZ<)2},:Ir*#m_YӼ R%a||EƼIJ,,+f"96r/}0jE/)s)cjW#w'Sʯ5<66lj$a~3Kʛy 2:cZ:Yh))+a߭K::N,Q F'qB]={.]h85C9cr=}*rk?vwV렵ٸW Rs%}rNAkDv|uFLBkWY YkX מ|)1!$#3%y?pF<@<Rr0}: }\J [5FRxY<9"SQdE(Q*Qʻ)q1E0B_O24[U'],lOb ]~WjHޏTQ5Syu wq)xnw8~)c 쫬gٲߠ H% k5dƝk> kEj,0% b"vi2Wس_CuK)K{n|>t{P1򨾜j>'kEkƗBg*H%'_aY6Bn!TL&ɌOb{c`'d^{t\i^[uɐ[}q0lM˕G:‚4kb祔c^:?bpg… +37stH:0}en6x˟%/<]BL&* 5&fK9Mq)/iyqtA%kUe[ڛKN]Ě^,"`/ s[EQQm?|XJ߅92m]G.E΃ח U*Cn.j_)Tѧj̿30ڇ!A0=͜ar I3$C^-9#|pk!)?7.x9 @OO;WƝZBFU keZ75F6Tc6"ZȚs2y/1 ʵ:u4xa`C>6Rb/Yм)^=+~uRd`/|_8xbB0?Ft||Z\##|K 0>>zxv8۴吅q 8ĥ)"6>~\8:qM}#͚'ĉ#p\׶ l#bA?)|g g9|8jP(cr,BwV (WliVxxᡁ@0Okn;ɥh$_ckCgriv}>=wGzβ KkBɛ[˪ !J)h&k2%07δt}!d<9;I&0wV/ v 0<H}L&8ob%Hi|޶o&h1L|u֦y~󛱢8fٲUsւ)0oiFx2}X[zVYr_;N(w]_4B@OanC?gĦx>мgx>ΛToZoOMp>40>V Oy V9iq!4 LN,ˢu{jsz]|"R޻&'ƚ{53ўFu(<٪9:΋]B;)B>1::8;~)Yt|0(pw2N%&X,URBK)3\zz&}ax4;ǟ(tLNg{N|Ǽ\G#C9g$^\}p?556]/RP.90 k,U8/u776s ʪ_01چ|\N 0VV*3H鴃J7iI!wG_^ypl}r*jɤSR 5QN@ iZ#1ٰy;_\3\BQQ x:WJv츟ٯ$"@6 S#qe딇(/P( Dy~TOϻ<4:-+F`0||;Xl-"uw$Цi󼕝mKʩorz"mϺ$F:~E'ҐvD\y?Rr8_He@ e~O,T.(ފR*cY^m|cVR[8 JҡSm!ΆԨb)RHG{?MpqrmN>߶Y)\p,d#xۆWY*,l6]v0h15M˙MS8+EdI='LBJIH7_9{Caз*Lq,dt >+~ّeʏ?xԕ4bBAŚjﵫ!'\Ը$WNvKO}ӽmSşذqsOy?\[,d@'73'j%kOe`1.g2"e =YIzS2|zŐƄa\U,dP;jhhhaxǶ?КZ՚.q SE+XrbOu%\GتX(H,N^~]JyEZQKceTQ]VGYqnah;y$cQahT&QPZ*iZ8UQQM.qo/T\7X"u?Mttl2Xq(IoW{R^ ux*SYJ! 4S.Jy~ BROS[V|žKNɛP(L6V^|cR7i7nZW1Fd@ Ara{詑|(T*dN]Ko?s=@ |_EvF]׍kR)eBJc" MUUbY6`~V޴dJKß&~'d3i WWWWWW
Current Directory: /opt/cpanel/ea-ruby24/root/usr/share/gems/doc/rack-2.2.3/rdoc/Rack
Viewing File: /opt/cpanel/ea-ruby24/root/usr/share/gems/doc/rack-2.2.3/rdoc/Rack/Utils.html
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>module Rack::Utils - rack-2.2.3 Documentation</title> <script type="text/javascript"> var rdoc_rel_prefix = "../"; var index_rel_prefix = "../"; </script> <script src="../js/navigation.js" defer></script> <script src="../js/search.js" defer></script> <script src="../js/search_index.js" defer></script> <script src="../js/searcher.js" defer></script> <script src="../js/darkfish.js" defer></script> <link href="../css/fonts.css" rel="stylesheet"> <link href="../css/rdoc.css" rel="stylesheet"> <body id="top" role="document" class="module"> <nav role="navigation"> <div id="project-navigation"> <div id="home-section" role="region" title="Quick navigation" class="nav-section"> <h2> <a href="../index.html" rel="home">Home</a> </h2> <div id="table-of-contents-navigation"> <a href="../table_of_contents.html#pages">Pages</a> <a href="../table_of_contents.html#classes">Classes</a> <a href="../table_of_contents.html#methods">Methods</a> </div> </div> <div id="search-section" role="search" class="project-section initially-hidden"> <form action="#" method="get" accept-charset="utf-8"> <div id="search-field-wrapper"> <input id="search-field" role="combobox" aria-label="Search" aria-autocomplete="list" aria-controls="search-results" type="text" name="search" placeholder="Search" spellcheck="false" title="Type to search, Up and Down to navigate, Enter to load"> </div> <ul id="search-results" aria-label="Search Results" aria-busy="false" aria-expanded="false" aria-atomic="false" class="initially-hidden"></ul> </form> </div> </div> <div id="class-metadata"> <!-- Method Quickref --> <div id="method-list-section" class="nav-section"> <h3>Methods</h3> <ul class="link-list" role="directory"> <li ><a href="#method-c-key_space_limit">::key_space_limit</a> <li ><a href="#method-c-key_space_limit-3D">::key_space_limit=</a> <li ><a href="#method-c-param_depth_limit">::param_depth_limit</a> <li ><a href="#method-c-param_depth_limit-3D">::param_depth_limit=</a> <li ><a href="#method-i-add_cookie_to_header">#add_cookie_to_header</a> <li ><a href="#method-i-add_remove_cookie_to_header">#add_remove_cookie_to_header</a> <li ><a href="#method-i-best_q_match">#best_q_match</a> <li ><a href="#method-i-build_nested_query">#build_nested_query</a> <li ><a href="#method-i-build_query">#build_query</a> <li ><a href="#method-i-byte_ranges">#byte_ranges</a> <li ><a href="#method-i-clean_path_info">#clean_path_info</a> <li ><a href="#method-i-clock_time">#clock_time</a> <li ><a href="#method-i-delete_cookie_header-21">#delete_cookie_header!</a> <li ><a href="#method-i-escape">#escape</a> <li ><a href="#method-i-escape_html">#escape_html</a> <li ><a href="#method-i-escape_path">#escape_path</a> <li ><a href="#method-i-get_byte_ranges">#get_byte_ranges</a> <li ><a href="#method-i-make_delete_cookie_header">#make_delete_cookie_header</a> <li ><a href="#method-i-parse_cookies">#parse_cookies</a> <li ><a href="#method-i-parse_cookies_header">#parse_cookies_header</a> <li ><a href="#method-i-parse_nested_query">#parse_nested_query</a> <li ><a href="#method-i-parse_query">#parse_query</a> <li ><a href="#method-i-q_values">#q_values</a> <li ><a href="#method-i-rfc2109">#rfc2109</a> <li ><a href="#method-i-rfc2822">#rfc2822</a> <li ><a href="#method-i-secure_compare">#secure_compare</a> <li ><a href="#method-i-select_best_encoding">#select_best_encoding</a> <li ><a href="#method-i-set_cookie_header-21">#set_cookie_header!</a> <li ><a href="#method-i-status_code">#status_code</a> <li ><a href="#method-i-unescape">#unescape</a> <li ><a href="#method-i-unescape_path">#unescape_path</a> <li ><a href="#method-i-valid_path-3F">#valid_path?</a> </ul> </div> </div> </nav> <main role="main" aria-labelledby="module-Rack::Utils"> <h1 id="module-Rack::Utils" class="module"> module Rack::Utils </h1> <section class="description"> <p><a href="Utils.html">Rack::Utils</a> contains a grab-bag of useful methods for writing web applications adopted from all kinds of Ruby libraries.</p> </section> <section id="5Buntitled-5D" class="documentation-section"> <section class="constants-list"> <header> <h3>Constants</h3> </header> <dl> <dt id="COMMON_SEP">COMMON_SEP <dd> <dt id="DEFAULT_SEP">DEFAULT_SEP <dd> <dt id="ESCAPE_HTML">ESCAPE_HTML <dd> <dt id="ESCAPE_HTML_PATTERN">ESCAPE_HTML_PATTERN <dd> <dt id="HTTP_STATUS_CODES">HTTP_STATUS_CODES <dd><p>Every standard HTTP code mapped to the appropriate message. Generated with:</p> <pre>curl -s https://www.iana.org/assignments/http-status-codes/http-status-codes-1.csv | \ ruby -ne &#39;m = /^(\d{3}),(?!Unassigned|\(Unused\))([^,]+)/.match($_) and \ puts &quot;#{m[1]} =&gt; \x27#{m[2].strip}\x27,&quot;&#39;</pre> <dt id="InvalidParameterError">InvalidParameterError <dd> <dt id="KeySpaceConstrainedParams">KeySpaceConstrainedParams <dd> <dt id="NULL_BYTE">NULL_BYTE <dd> <dt id="PATH_SEPS">PATH_SEPS <dd> <dt id="ParameterTypeError">ParameterTypeError <dd> <dt id="STATUS_WITH_NO_ENTITY_BODY">STATUS_WITH_NO_ENTITY_BODY <dd><p>Responses with HTTP status codes that should not have an entity body</p> <dt id="SYMBOL_TO_STATUS_CODE">SYMBOL_TO_STATUS_CODE <dd> </dl> </section> <section class="attribute-method-details" class="method-section"> <header> <h3>Attributes</h3> </header> <div id="attribute-c-default_query_parser" class="method-detail"> <div class="method-heading attribute-method-heading"> <span class="method-name">default_query_parser</span><span class="attribute-access-type">[RW]</span> </div> <div class="method-description"> </div> </div> <div id="attribute-c-multipart_part_limit" class="method-detail"> <div class="method-heading attribute-method-heading"> <span class="method-name">multipart_part_limit</span><span class="attribute-access-type">[RW]</span> </div> <div class="method-description"> </div> </div> </section> <section id="public-class-5Buntitled-5D-method-details" class="method-section"> <header> <h3>Public Class Methods</h3> </header> <div id="method-c-key_space_limit" class="method-detail "> <div class="method-heading"> <span class="method-name">key_space_limit</span><span class="method-args">()</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="key_space_limit-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 72</span> <span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">key_space_limit</span> <span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">key_space_limit</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-c-key_space_limit-3D" class="method-detail "> <div class="method-heading"> <span class="method-name">key_space_limit=</span><span class="method-args">(v)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="key_space_limit-3D-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 76</span> <span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">key_space_limit=</span>(<span class="ruby-identifier">v</span>) <span class="ruby-keyword">self</span>.<span class="ruby-identifier">default_query_parser</span> = <span class="ruby-keyword">self</span>.<span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">new_space_limit</span>(<span class="ruby-identifier">v</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-c-param_depth_limit" class="method-detail "> <div class="method-heading"> <span class="method-name">param_depth_limit</span><span class="method-args">()</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="param_depth_limit-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 64</span> <span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">param_depth_limit</span> <span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">param_depth_limit</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-c-param_depth_limit-3D" class="method-detail "> <div class="method-heading"> <span class="method-name">param_depth_limit=</span><span class="method-args">(v)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="param_depth_limit-3D-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 68</span> <span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">param_depth_limit=</span>(<span class="ruby-identifier">v</span>) <span class="ruby-keyword">self</span>.<span class="ruby-identifier">default_query_parser</span> = <span class="ruby-keyword">self</span>.<span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">new_depth_limit</span>(<span class="ruby-identifier">v</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> </section> <section id="public-instance-5Buntitled-5D-method-details" class="method-section"> <header> <h3>Public Instance Methods</h3> </header> <div id="method-i-add_cookie_to_header" class="method-detail "> <div class="method-heading"> <span class="method-name">add_cookie_to_header</span><span class="method-args">(header, key, value)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="add_cookie_to_header-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 221</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">add_cookie_to_header</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-keyword">case</span> <span class="ruby-identifier">value</span> <span class="ruby-keyword">when</span> <span class="ruby-constant">Hash</span> <span class="ruby-identifier">domain</span> = <span class="ruby-node">&quot;; domain=#{value[:domain]}&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:domain</span>] <span class="ruby-identifier">path</span> = <span class="ruby-node">&quot;; path=#{value[:path]}&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:path</span>] <span class="ruby-identifier">max_age</span> = <span class="ruby-node">&quot;; max-age=#{value[:max_age]}&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:max_age</span>] <span class="ruby-identifier">expires</span> = <span class="ruby-node">&quot;; expires=#{value[:expires].httpdate}&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:expires</span>] <span class="ruby-identifier">secure</span> = <span class="ruby-string">&quot;; secure&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:secure</span>] <span class="ruby-identifier">httponly</span> = <span class="ruby-string">&quot;; HttpOnly&quot;</span> <span class="ruby-keyword">if</span> (<span class="ruby-identifier">value</span>.<span class="ruby-identifier">key?</span>(<span class="ruby-value">:httponly</span>) <span class="ruby-operator">?</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:httponly</span>] <span class="ruby-operator">:</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:http_only</span>]) <span class="ruby-identifier">same_site</span> = <span class="ruby-keyword">case</span> <span class="ruby-identifier">value</span>[<span class="ruby-value">:same_site</span>] <span class="ruby-keyword">when</span> <span class="ruby-keyword">false</span>, <span class="ruby-keyword">nil</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">when</span> <span class="ruby-value">:none</span>, <span class="ruby-string">&#39;None&#39;</span>, <span class="ruby-value">:None</span> <span class="ruby-string">&#39;; SameSite=None&#39;</span> <span class="ruby-keyword">when</span> <span class="ruby-value">:lax</span>, <span class="ruby-string">&#39;Lax&#39;</span>, <span class="ruby-value">:Lax</span> <span class="ruby-string">&#39;; SameSite=Lax&#39;</span> <span class="ruby-keyword">when</span> <span class="ruby-keyword">true</span>, <span class="ruby-value">:strict</span>, <span class="ruby-string">&#39;Strict&#39;</span>, <span class="ruby-value">:Strict</span> <span class="ruby-string">&#39;; SameSite=Strict&#39;</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">&quot;Invalid SameSite value: #{value[:same_site].inspect}&quot;</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">value</span> = <span class="ruby-identifier">value</span>[<span class="ruby-value">:value</span>] <span class="ruby-keyword">end</span> <span class="ruby-identifier">value</span> = [<span class="ruby-identifier">value</span>] <span class="ruby-keyword">unless</span> <span class="ruby-constant">Array</span> <span class="ruby-operator">===</span> <span class="ruby-identifier">value</span> <span class="ruby-identifier">cookie</span> = <span class="ruby-node">&quot;#{escape(key)}=#{value.map { |v| escape v }.join(&#39;&amp;&#39;)}#{domain}&quot;</span> <span class="ruby-node">&quot;#{path}#{max_age}#{expires}#{secure}#{httponly}#{same_site}&quot;</span> <span class="ruby-keyword">case</span> <span class="ruby-identifier">header</span> <span class="ruby-keyword">when</span> <span class="ruby-keyword">nil</span>, <span class="ruby-string">&#39;&#39;</span> <span class="ruby-identifier">cookie</span> <span class="ruby-keyword">when</span> <span class="ruby-constant">String</span> [<span class="ruby-identifier">header</span>, <span class="ruby-identifier">cookie</span>].<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;\n&quot;</span>) <span class="ruby-keyword">when</span> <span class="ruby-constant">Array</span> (<span class="ruby-identifier">header</span> <span class="ruby-operator">+</span> [<span class="ruby-identifier">cookie</span>]).<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;\n&quot;</span>) <span class="ruby-keyword">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">&quot;Unrecognized cookie header value. Expected String, Array, or nil, got #{header.inspect}&quot;</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-add_remove_cookie_to_header" class="method-detail "> <div class="method-heading"> <span class="method-name">add_remove_cookie_to_header</span><span class="method-args">(header, key, value = {})</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Adds a cookie that will <strong>remove</strong> a cookie from the client. Hence the strange method name.</p> <div class="method-source-code" id="add_remove_cookie_to_header-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 304</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">add_remove_cookie_to_header</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span> = {}) <span class="ruby-identifier">new_header</span> = <span class="ruby-identifier">make_delete_cookie_header</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-identifier">add_cookie_to_header</span>(<span class="ruby-identifier">new_header</span>, <span class="ruby-identifier">key</span>, { <span class="ruby-identifier">value</span><span class="ruby-operator">:</span> <span class="ruby-string">&#39;&#39;</span>, <span class="ruby-identifier">path</span><span class="ruby-operator">:</span> <span class="ruby-keyword">nil</span>, <span class="ruby-identifier">domain</span><span class="ruby-operator">:</span> <span class="ruby-keyword">nil</span>, <span class="ruby-identifier">max_age</span><span class="ruby-operator">:</span> <span class="ruby-string">&#39;0&#39;</span>, <span class="ruby-identifier">expires</span><span class="ruby-operator">:</span> <span class="ruby-constant">Time</span>.<span class="ruby-identifier">at</span>(<span class="ruby-value">0</span>) }.<span class="ruby-identifier">merge</span>(<span class="ruby-identifier">value</span>)) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-best_q_match" class="method-detail "> <div class="method-heading"> <span class="method-name">best_q_match</span><span class="method-args">(q_value_header, available_mimes)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Return best accept value to use, based on the algorithm in RFC 2616 Section 14. If there are multiple best matches (same specificity and quality), the value returned is arbitrary.</p> <div class="method-source-code" id="best_q_match-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 143</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">best_q_match</span>(<span class="ruby-identifier">q_value_header</span>, <span class="ruby-identifier">available_mimes</span>) <span class="ruby-identifier">values</span> = <span class="ruby-identifier">q_values</span>(<span class="ruby-identifier">q_value_header</span>) <span class="ruby-identifier">matches</span> = <span class="ruby-identifier">values</span>.<span class="ruby-identifier">map</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">req_mime</span>, <span class="ruby-identifier">quality</span><span class="ruby-operator">|</span> <span class="ruby-identifier">match</span> = <span class="ruby-identifier">available_mimes</span>.<span class="ruby-identifier">find</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">am</span><span class="ruby-operator">|</span> <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">Mime</span>.<span class="ruby-identifier">match?</span>(<span class="ruby-identifier">am</span>, <span class="ruby-identifier">req_mime</span>) } <span class="ruby-keyword">next</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">match</span> [<span class="ruby-identifier">match</span>, <span class="ruby-identifier">quality</span>] <span class="ruby-keyword">end</span>.<span class="ruby-identifier">compact</span>.<span class="ruby-identifier">sort_by</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">match</span>, <span class="ruby-identifier">quality</span><span class="ruby-operator">|</span> (<span class="ruby-identifier">match</span>.<span class="ruby-identifier">split</span>(<span class="ruby-string">&#39;/&#39;</span>, <span class="ruby-value">2</span>).<span class="ruby-identifier">count</span>(<span class="ruby-string">&#39;*&#39;</span>) <span class="ruby-operator">*</span> <span class="ruby-value">-10</span>) <span class="ruby-operator">+</span> <span class="ruby-identifier">quality</span> <span class="ruby-keyword">end</span>.<span class="ruby-identifier">last</span> <span class="ruby-identifier">matches</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-identifier">matches</span>.<span class="ruby-identifier">first</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-build_nested_query" class="method-detail "> <div class="method-heading"> <span class="method-name">build_nested_query</span><span class="method-args">(value, prefix = nil)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="build_nested_query-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 110</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">build_nested_query</span>(<span class="ruby-identifier">value</span>, <span class="ruby-identifier">prefix</span> = <span class="ruby-keyword">nil</span>) <span class="ruby-keyword">case</span> <span class="ruby-identifier">value</span> <span class="ruby-keyword">when</span> <span class="ruby-constant">Array</span> <span class="ruby-identifier">value</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">v</span><span class="ruby-operator">|</span> <span class="ruby-identifier">build_nested_query</span>(<span class="ruby-identifier">v</span>, <span class="ruby-node">&quot;#{prefix}[]&quot;</span>) }.<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;&amp;&quot;</span>) <span class="ruby-keyword">when</span> <span class="ruby-constant">Hash</span> <span class="ruby-identifier">value</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">k</span>, <span class="ruby-identifier">v</span><span class="ruby-operator">|</span> <span class="ruby-identifier">build_nested_query</span>(<span class="ruby-identifier">v</span>, <span class="ruby-identifier">prefix</span> <span class="ruby-operator">?</span> <span class="ruby-node">&quot;#{prefix}[#{escape(k)}]&quot;</span> <span class="ruby-operator">:</span> <span class="ruby-identifier">escape</span>(<span class="ruby-identifier">k</span>)) }.<span class="ruby-identifier">delete_if</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:empty?</span>).<span class="ruby-identifier">join</span>(<span class="ruby-string">&#39;&amp;&#39;</span>) <span class="ruby-keyword">when</span> <span class="ruby-keyword">nil</span> <span class="ruby-identifier">prefix</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-string">&quot;value must be a Hash&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">prefix</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-node">&quot;#{prefix}=#{escape(value)}&quot;</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-build_query" class="method-detail "> <div class="method-heading"> <span class="method-name">build_query</span><span class="method-args">(params)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="build_query-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 100</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">build_query</span>(<span class="ruby-identifier">params</span>) <span class="ruby-identifier">params</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">k</span>, <span class="ruby-identifier">v</span><span class="ruby-operator">|</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">v</span>.<span class="ruby-identifier">class</span> <span class="ruby-operator">==</span> <span class="ruby-constant">Array</span> <span class="ruby-identifier">build_query</span>(<span class="ruby-identifier">v</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> [<span class="ruby-identifier">k</span>, <span class="ruby-identifier">x</span>] }) <span class="ruby-keyword">else</span> <span class="ruby-identifier">v</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-operator">?</span> <span class="ruby-identifier">escape</span>(<span class="ruby-identifier">k</span>) <span class="ruby-operator">:</span> <span class="ruby-node">&quot;#{escape(k)}=#{escape(v)}&quot;</span> <span class="ruby-keyword">end</span> }.<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;&amp;&quot;</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-byte_ranges" class="method-detail "> <div class="method-heading"> <span class="method-name">byte_ranges</span><span class="method-args">(env, size)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Parses the “Range:” header, if present, into an array of Range objects. Returns nil if the header is missing or syntactically invalid. Returns an empty array if none of the ranges are satisfiable.</p> <div class="method-source-code" id="byte_ranges-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 336</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">byte_ranges</span>(<span class="ruby-identifier">env</span>, <span class="ruby-identifier">size</span>) <span class="ruby-identifier">warn</span> <span class="ruby-string">&quot;`byte_ranges` is deprecated, please use `get_byte_ranges`&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">$VERBOSE</span> <span class="ruby-identifier">get_byte_ranges</span> <span class="ruby-identifier">env</span>[<span class="ruby-string">&#39;HTTP_RANGE&#39;</span>], <span class="ruby-identifier">size</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-clean_path_info" class="method-detail "> <div class="method-heading"> <span class="method-name">clean_path_info</span><span class="method-args">(path_info)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="clean_path_info-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 589</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">clean_path_info</span>(<span class="ruby-identifier">path_info</span>) <span class="ruby-identifier">parts</span> = <span class="ruby-identifier">path_info</span>.<span class="ruby-identifier">split</span> <span class="ruby-constant">PATH_SEPS</span> <span class="ruby-identifier">clean</span> = [] <span class="ruby-identifier">parts</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">part</span><span class="ruby-operator">|</span> <span class="ruby-keyword">next</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">part</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">part</span> <span class="ruby-operator">==</span> <span class="ruby-string">&#39;.&#39;</span> <span class="ruby-identifier">part</span> <span class="ruby-operator">==</span> <span class="ruby-string">&#39;..&#39;</span> <span class="ruby-operator">?</span> <span class="ruby-identifier">clean</span>.<span class="ruby-identifier">pop</span> <span class="ruby-operator">:</span> <span class="ruby-identifier">clean</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">part</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">clean_path</span> = <span class="ruby-identifier">clean</span>.<span class="ruby-identifier">join</span>(<span class="ruby-operator">::</span><span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">SEPARATOR</span>) <span class="ruby-identifier">clean_path</span>.<span class="ruby-identifier">prepend</span>(<span class="ruby-string">&quot;/&quot;</span>) <span class="ruby-keyword">if</span> <span class="ruby-identifier">parts</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">parts</span>.<span class="ruby-identifier">first</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-identifier">clean_path</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-clock_time" class="method-detail "> <div class="method-heading"> <span class="method-name">clock_time</span><span class="method-args">()</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="clock_time-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 81</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">clock_time</span> <span class="ruby-constant">Process</span>.<span class="ruby-identifier">clock_gettime</span>(<span class="ruby-constant">Process</span><span class="ruby-operator">::</span><span class="ruby-constant">CLOCK_MONOTONIC</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-delete_cookie_header-21" class="method-detail "> <div class="method-heading"> <span class="method-name">delete_cookie_header!</span><span class="method-args">(header, key, value = {})</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="delete_cookie_header-21-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 297</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">delete_cookie_header!</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span> = {}) <span class="ruby-identifier">header</span>[<span class="ruby-constant">SET_COOKIE</span>] = <span class="ruby-identifier">add_remove_cookie_to_header</span>(<span class="ruby-identifier">header</span>[<span class="ruby-constant">SET_COOKIE</span>], <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-keyword">nil</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-escape" class="method-detail "> <div class="method-heading"> <span class="method-name">escape</span><span class="method-args">(s)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>URI escapes. (CGI style space to +)</p> <div class="method-source-code" id="escape-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 33</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">escape</span>(<span class="ruby-identifier">s</span>) <span class="ruby-constant">URI</span>.<span class="ruby-identifier">encode_www_form_component</span>(<span class="ruby-identifier">s</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-escape_html" class="method-detail "> <div class="method-heading"> <span class="method-name">escape_html</span><span class="method-args">(string)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Escape ampersands, brackets and quotes to their HTML/XML entities.</p> <div class="method-source-code" id="escape_html-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 168</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">escape_html</span>(<span class="ruby-identifier">string</span>) <span class="ruby-identifier">string</span>.<span class="ruby-identifier">to_s</span>.<span class="ruby-identifier">gsub</span>(<span class="ruby-constant">ESCAPE_HTML_PATTERN</span>){<span class="ruby-operator">|</span><span class="ruby-identifier">c</span><span class="ruby-operator">|</span> <span class="ruby-constant">ESCAPE_HTML</span>[<span class="ruby-identifier">c</span>] } <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-escape_path" class="method-detail "> <div class="method-heading"> <span class="method-name">escape_path</span><span class="method-args">(s)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Like URI escaping, but with %20 instead of +. Strictly speaking this is true URI escaping.</p> <div class="method-source-code" id="escape_path-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 39</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">escape_path</span>(<span class="ruby-identifier">s</span>) <span class="ruby-operator">::</span><span class="ruby-constant">URI</span><span class="ruby-operator">::</span><span class="ruby-constant">DEFAULT_PARSER</span>.<span class="ruby-identifier">escape</span> <span class="ruby-identifier">s</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-get_byte_ranges" class="method-detail "> <div class="method-heading"> <span class="method-name">get_byte_ranges</span><span class="method-args">(http_range, size)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="get_byte_ranges-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 341</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">get_byte_ranges</span>(<span class="ruby-identifier">http_range</span>, <span class="ruby-identifier">size</span>) <span class="ruby-comment"># See &lt;http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35&gt;</span> <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">http_range</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-identifier">http_range</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp">/bytes=([^;]+)/</span> <span class="ruby-identifier">ranges</span> = [] <span class="ruby-node">$1</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/,\s*/</span>).<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">range_spec</span><span class="ruby-operator">|</span> <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">range_spec</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp">/(\d*)-(\d*)/</span> <span class="ruby-identifier">r0</span>, <span class="ruby-identifier">r1</span> = <span class="ruby-node">$1</span>, <span class="ruby-node">$2</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r0</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r1</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-comment"># suffix-byte-range-spec, represents trailing suffix of file</span> <span class="ruby-identifier">r0</span> = <span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">r1</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-identifier">r0</span> = <span class="ruby-value">0</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r0</span> <span class="ruby-operator">&lt;</span> <span class="ruby-value">0</span> <span class="ruby-identifier">r1</span> = <span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">r0</span> = <span class="ruby-identifier">r0</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r1</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-identifier">r1</span> = <span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">r1</span> = <span class="ruby-identifier">r1</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r1</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">r0</span> <span class="ruby-comment"># backwards range is syntactically invalid</span> <span class="ruby-identifier">r1</span> = <span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">r1</span> <span class="ruby-operator">&gt;=</span> <span class="ruby-identifier">size</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">ranges</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">r0</span><span class="ruby-operator">..</span><span class="ruby-identifier">r1</span>) <span class="ruby-keyword">if</span> <span class="ruby-identifier">r0</span> <span class="ruby-operator">&lt;=</span> <span class="ruby-identifier">r1</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">ranges</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-make_delete_cookie_header" class="method-detail "> <div class="method-heading"> <span class="method-name">make_delete_cookie_header</span><span class="method-args">(header, key, value)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="make_delete_cookie_header-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 267</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">make_delete_cookie_header</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-keyword">case</span> <span class="ruby-identifier">header</span> <span class="ruby-keyword">when</span> <span class="ruby-keyword">nil</span>, <span class="ruby-string">&#39;&#39;</span> <span class="ruby-identifier">cookies</span> = [] <span class="ruby-keyword">when</span> <span class="ruby-constant">String</span> <span class="ruby-identifier">cookies</span> = <span class="ruby-identifier">header</span>.<span class="ruby-identifier">split</span>(<span class="ruby-string">&quot;\n&quot;</span>) <span class="ruby-keyword">when</span> <span class="ruby-constant">Array</span> <span class="ruby-identifier">cookies</span> = <span class="ruby-identifier">header</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">key</span> = <span class="ruby-identifier">escape</span>(<span class="ruby-identifier">key</span>) <span class="ruby-identifier">domain</span> = <span class="ruby-identifier">value</span>[<span class="ruby-value">:domain</span>] <span class="ruby-identifier">path</span> = <span class="ruby-identifier">value</span>[<span class="ruby-value">:path</span>] <span class="ruby-identifier">regexp</span> = <span class="ruby-keyword">if</span> <span class="ruby-identifier">domain</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">path</span> <span class="ruby-node">/\A#{key}=.*(?:domain=#{domain}(?:;|$).*path=#{path}(?:;|$)|path=#{path}(?:;|$).*domain=#{domain}(?:;|$))/</span> <span class="ruby-keyword">else</span> <span class="ruby-node">/\A#{key}=.*domain=#{domain}(?:;|$)/</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">path</span> <span class="ruby-node">/\A#{key}=.*path=#{path}(?:;|$)/</span> <span class="ruby-keyword">else</span> <span class="ruby-node">/\A#{key}=/</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">cookies</span>.<span class="ruby-identifier">reject!</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">cookie</span><span class="ruby-operator">|</span> <span class="ruby-identifier">regexp</span>.<span class="ruby-identifier">match?</span> <span class="ruby-identifier">cookie</span> } <span class="ruby-identifier">cookies</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;\n&quot;</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-parse_cookies" class="method-detail "> <div class="method-heading"> <span class="method-name">parse_cookies</span><span class="method-args">(env)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="parse_cookies-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 204</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">parse_cookies</span>(<span class="ruby-identifier">env</span>) <span class="ruby-identifier">parse_cookies_header</span> <span class="ruby-identifier">env</span>[<span class="ruby-constant">HTTP_COOKIE</span>] <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-parse_cookies_header" class="method-detail "> <div class="method-heading"> <span class="method-name">parse_cookies_header</span><span class="method-args">(header)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="parse_cookies_header-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 208</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">parse_cookies_header</span>(<span class="ruby-identifier">header</span>) <span class="ruby-comment"># According to RFC 6265:</span> <span class="ruby-comment"># The syntax for cookie headers only supports semicolons</span> <span class="ruby-comment"># User Agent -&gt; Server ==</span> <span class="ruby-comment"># Cookie: SID=31d4d96e407aad42; lang=en-US</span> <span class="ruby-keyword">return</span> {} <span class="ruby-keyword">unless</span> <span class="ruby-identifier">header</span> <span class="ruby-identifier">header</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/[;] */n</span>).<span class="ruby-identifier">each_with_object</span>({}) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">cookie</span>, <span class="ruby-identifier">cookies</span><span class="ruby-operator">|</span> <span class="ruby-keyword">next</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">cookie</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span> = <span class="ruby-identifier">cookie</span>.<span class="ruby-identifier">split</span>(<span class="ruby-string">&#39;=&#39;</span>, <span class="ruby-value">2</span>) <span class="ruby-identifier">cookies</span>[<span class="ruby-identifier">key</span>] = (<span class="ruby-identifier">unescape</span>(<span class="ruby-identifier">value</span>) <span class="ruby-keyword">rescue</span> <span class="ruby-identifier">value</span>) <span class="ruby-keyword">unless</span> <span class="ruby-identifier">cookies</span>.<span class="ruby-identifier">key?</span>(<span class="ruby-identifier">key</span>) <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-parse_nested_query" class="method-detail "> <div class="method-heading"> <span class="method-name">parse_nested_query</span><span class="method-args">(qs, d = nil)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="parse_nested_query-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 96</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">parse_nested_query</span>(<span class="ruby-identifier">qs</span>, <span class="ruby-identifier">d</span> = <span class="ruby-keyword">nil</span>) <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">Utils</span>.<span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">parse_nested_query</span>(<span class="ruby-identifier">qs</span>, <span class="ruby-identifier">d</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-parse_query" class="method-detail "> <div class="method-heading"> <span class="method-name">parse_query</span><span class="method-args">(qs, d = nil, &unescaper)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="parse_query-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 92</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">parse_query</span>(<span class="ruby-identifier">qs</span>, <span class="ruby-identifier">d</span> = <span class="ruby-keyword">nil</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">unescaper</span>) <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">Utils</span>.<span class="ruby-identifier">default_query_parser</span>.<span class="ruby-identifier">parse_query</span>(<span class="ruby-identifier">qs</span>, <span class="ruby-identifier">d</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">unescaper</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-q_values" class="method-detail "> <div class="method-heading"> <span class="method-name">q_values</span><span class="method-args">(q_value_header)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="q_values-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 128</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">q_values</span>(<span class="ruby-identifier">q_value_header</span>) <span class="ruby-identifier">q_value_header</span>.<span class="ruby-identifier">to_s</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/\s*,\s*/</span>).<span class="ruby-identifier">map</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">part</span><span class="ruby-operator">|</span> <span class="ruby-identifier">value</span>, <span class="ruby-identifier">parameters</span> = <span class="ruby-identifier">part</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/\s*;\s*/</span>, <span class="ruby-value">2</span>) <span class="ruby-identifier">quality</span> = <span class="ruby-value">1.0</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">parameters</span> <span class="ruby-operator">&amp;&amp;</span> (<span class="ruby-identifier">md</span> = <span class="ruby-regexp">/\Aq=([\d.]+)/</span>.<span class="ruby-identifier">match</span>(<span class="ruby-identifier">parameters</span>)) <span class="ruby-identifier">quality</span> = <span class="ruby-identifier">md</span>[<span class="ruby-value">1</span>].<span class="ruby-identifier">to_f</span> <span class="ruby-keyword">end</span> [<span class="ruby-identifier">value</span>, <span class="ruby-identifier">quality</span>] <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-rfc2109" class="method-detail "> <div class="method-heading"> <span class="method-name">rfc2109</span><span class="method-args">(time)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Modified version of stdlib time.rb Time#rfc2822 to use &#39;%d-%b-%Y&#39; instead of &#39;% %b %Y&#39;. It assumes that the time is in GMT to comply to the RFC 2109.</p> <p>NOTE: I&#39;m not sure the RFC says it requires GMT, but is ambiguous enough that I&#39;m certain someone implemented only that option. Do not use %a and %b from Time.strptime, it would use localized names for weekday and month.</p> <div class="method-source-code" id="rfc2109-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 327</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">rfc2109</span>(<span class="ruby-identifier">time</span>) <span class="ruby-identifier">wday</span> = <span class="ruby-constant">Time</span><span class="ruby-operator">::</span><span class="ruby-constant">RFC2822_DAY_NAME</span>[<span class="ruby-identifier">time</span>.<span class="ruby-identifier">wday</span>] <span class="ruby-identifier">mon</span> = <span class="ruby-constant">Time</span><span class="ruby-operator">::</span><span class="ruby-constant">RFC2822_MONTH_NAME</span>[<span class="ruby-identifier">time</span>.<span class="ruby-identifier">mon</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>] <span class="ruby-identifier">time</span>.<span class="ruby-identifier">strftime</span>(<span class="ruby-node">&quot;#{wday}, %d-#{mon}-%Y %H:%M:%S GMT&quot;</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-rfc2822" class="method-detail "> <div class="method-heading"> <span class="method-name">rfc2822</span><span class="method-args">(time)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="rfc2822-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 314</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">rfc2822</span>(<span class="ruby-identifier">time</span>) <span class="ruby-identifier">time</span>.<span class="ruby-identifier">rfc2822</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-secure_compare" class="method-detail "> <div class="method-heading"> <span class="method-name">secure_compare</span><span class="method-args">(a, b)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Constant time string comparison.</p> <p>NOTE: the values compared should be of fixed length, such as strings that have already been processed by HMAC. This should not be used on variable length plaintext strings because it could leak length info via timing attacks.</p> <div class="method-source-code" id="secure_compare-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 375</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">secure_compare</span>(<span class="ruby-identifier">a</span>, <span class="ruby-identifier">b</span>) <span class="ruby-keyword">return</span> <span class="ruby-keyword">false</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">a</span>.<span class="ruby-identifier">bytesize</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">b</span>.<span class="ruby-identifier">bytesize</span> <span class="ruby-identifier">l</span> = <span class="ruby-identifier">a</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-string">&quot;C*&quot;</span>) <span class="ruby-identifier">r</span>, <span class="ruby-identifier">i</span> = <span class="ruby-value">0</span>, <span class="ruby-value">-1</span> <span class="ruby-identifier">b</span>.<span class="ruby-identifier">each_byte</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">v</span><span class="ruby-operator">|</span> <span class="ruby-identifier">r</span> <span class="ruby-operator">|=</span> <span class="ruby-identifier">v</span> <span class="ruby-operator">^</span> <span class="ruby-identifier">l</span>[<span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>] } <span class="ruby-identifier">r</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-select_best_encoding" class="method-detail "> <div class="method-heading"> <span class="method-name">select_best_encoding</span><span class="method-args">(available_encodings, accept_encoding)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="select_best_encoding-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 172</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">select_best_encoding</span>(<span class="ruby-identifier">available_encodings</span>, <span class="ruby-identifier">accept_encoding</span>) <span class="ruby-comment"># http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html</span> <span class="ruby-identifier">expanded_accept_encoding</span> = [] <span class="ruby-identifier">accept_encoding</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-identifier">preference</span> = <span class="ruby-identifier">available_encodings</span>.<span class="ruby-identifier">index</span>(<span class="ruby-identifier">m</span>) <span class="ruby-operator">||</span> <span class="ruby-identifier">available_encodings</span>.<span class="ruby-identifier">size</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">m</span> <span class="ruby-operator">==</span> <span class="ruby-string">&quot;*&quot;</span> (<span class="ruby-identifier">available_encodings</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">accept_encoding</span>.<span class="ruby-identifier">map</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:first</span>)).<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">m2</span><span class="ruby-operator">|</span> <span class="ruby-identifier">expanded_accept_encoding</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">m2</span>, <span class="ruby-identifier">q</span>, <span class="ruby-identifier">preference</span>] <span class="ruby-keyword">end</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">expanded_accept_encoding</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span>, <span class="ruby-identifier">preference</span>] <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span> <span class="ruby-identifier">encoding_candidates</span> = <span class="ruby-identifier">expanded_accept_encoding</span> .<span class="ruby-identifier">sort_by</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">_</span>, <span class="ruby-identifier">q</span>, <span class="ruby-identifier">p</span><span class="ruby-operator">|</span> [<span class="ruby-operator">-</span><span class="ruby-identifier">q</span>, <span class="ruby-identifier">p</span>] } .<span class="ruby-identifier">map!</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:first</span>) <span class="ruby-keyword">unless</span> <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-string">&quot;identity&quot;</span>) <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">push</span>(<span class="ruby-string">&quot;identity&quot;</span>) <span class="ruby-keyword">end</span> <span class="ruby-identifier">expanded_accept_encoding</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-identifier">m</span>) <span class="ruby-keyword">if</span> <span class="ruby-identifier">q</span> <span class="ruby-operator">==</span> <span class="ruby-value">0.0</span> <span class="ruby-keyword">end</span> (<span class="ruby-identifier">encoding_candidates</span> <span class="ruby-operator">&amp;</span> <span class="ruby-identifier">available_encodings</span>)[<span class="ruby-value">0</span>] <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-set_cookie_header-21" class="method-detail "> <div class="method-heading"> <span class="method-name">set_cookie_header!</span><span class="method-args">(header, key, value)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="set_cookie_header-21-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 262</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">set_cookie_header!</span>(<span class="ruby-identifier">header</span>, <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-identifier">header</span>[<span class="ruby-constant">SET_COOKIE</span>] = <span class="ruby-identifier">add_cookie_to_header</span>(<span class="ruby-identifier">header</span>[<span class="ruby-constant">SET_COOKIE</span>], <span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span>) <span class="ruby-keyword">nil</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-status_code" class="method-detail "> <div class="method-heading"> <span class="method-name">status_code</span><span class="method-args">(status)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="status_code-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 579</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">status_code</span>(<span class="ruby-identifier">status</span>) <span class="ruby-keyword">if</span> <span class="ruby-identifier">status</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Symbol</span>) <span class="ruby-constant">SYMBOL_TO_STATUS_CODE</span>.<span class="ruby-identifier">fetch</span>(<span class="ruby-identifier">status</span>) { <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">&quot;Unrecognized status code #{status.inspect}&quot;</span> } <span class="ruby-keyword">else</span> <span class="ruby-identifier">status</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-unescape" class="method-detail "> <div class="method-heading"> <span class="method-name">unescape</span><span class="method-args">(s, encoding = Encoding::UTF_8)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Unescapes a URI escaped string with <code>encoding</code>. <code>encoding</code> will be the target encoding of the string returned, and it defaults to UTF-8</p> <div class="method-source-code" id="unescape-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 51</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">unescape</span>(<span class="ruby-identifier">s</span>, <span class="ruby-identifier">encoding</span> = <span class="ruby-constant">Encoding</span><span class="ruby-operator">::</span><span class="ruby-constant">UTF_8</span>) <span class="ruby-constant">URI</span>.<span class="ruby-identifier">decode_www_form_component</span>(<span class="ruby-identifier">s</span>, <span class="ruby-identifier">encoding</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-unescape_path" class="method-detail "> <div class="method-heading"> <span class="method-name">unescape_path</span><span class="method-args">(s)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <p>Unescapes the *<strong>path</strong>* component of a URI. See <a href="Utils.html#method-i-unescape">#unescape</a> for unescaping query parameters or form components.</p> <div class="method-source-code" id="unescape_path-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 45</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">unescape_path</span>(<span class="ruby-identifier">s</span>) <span class="ruby-operator">::</span><span class="ruby-constant">URI</span><span class="ruby-operator">::</span><span class="ruby-constant">DEFAULT_PARSER</span>.<span class="ruby-identifier">unescape</span> <span class="ruby-identifier">s</span> <span class="ruby-keyword">end</span></pre> </div> </div> </div> <div id="method-i-valid_path-3F" class="method-detail "> <div class="method-heading"> <span class="method-name">valid_path?</span><span class="method-args">(path)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="valid_path-3F-source"> <pre><span class="ruby-comment"># File lib/rack/utils.rb, line 606</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">valid_path?</span>(<span class="ruby-identifier">path</span>) <span class="ruby-identifier">path</span>.<span class="ruby-identifier">valid_encoding?</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-operator">!</span><span class="ruby-identifier">path</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-constant">NULL_BYTE</span>) <span class="ruby-keyword">end</span></pre> </div> </div> </div> </section> </section> </main> <footer id="validator-badges" role="contentinfo"> <p><a href="http://validator.w3.org/check/referer">Validate</a> <p>Generated by <a href="https://rdoc.github.io/rdoc">RDoc</a> 5.0.1. <p>Based on <a href="http://deveiate.org/projects/Darkfish-RDoc/">Darkfish</a> by <a href="http://deveiate.org">Michael Granger</a>. </footer>