Day 8.0

Gemfile

@@ -1,4 +1,5 @@
 source "https://rubygems.org"
 
+gem "letters"
 gem "minitest"
 gem "pry"

Gemfile.lock

@@ -1,7 +1,22 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    activesupport (4.2.5)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    awesome_print (1.6.1)
     coderay (1.1.0)
+    colorize (0.7.7)
+    i18n (0.7.0)
+    json (1.8.3)
+    letters (0.4.1)
+      activesupport
+      awesome_print
+      colorize
+      xml-simple
     method_source (0.8.2)
     minitest (5.8.3)
     pry (0.10.3)
@@ -9,11 +24,16 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     slop (3.6.0)
+    thread_safe (0.3.5)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    xml-simple (1.1.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  letters
   minitest
   pry
 

day_08.rb

@@ -0,0 +1,336 @@
+require "letters"
+require "pry"
+
+class String
+  def escaped
+    escaped = ""
+
+    ss = StringScanner.new(self)
+    ss.scan(/"/)
+
+    while true
+      ss.scan(/[^\\]*/)
+      escaped << ss.matched if ss.matched?
+
+      break if ss.eos?
+
+      ss.skip(/\\/)
+
+      case ss.scan(/./)
+      when ?x
+        ss.skip(/../)
+        escaped << ?.
+      else
+        escaped << ss.matched
+      end
+    end
+
+    escaped.sub(/"$/, "")
+  end
+end
+
+num = DATA.read.each_line.map(&:chomp).inject(0) do |n,line|
+  n + line.size - line.escaped.size
+end
+puts num
+__END__
+"sjdivfriyaaqa\xd2v\"k\"mpcu\"yyu\"en"
+"vcqc"
+"zbcwgmbpijcxu\"yins\"sfxn"
+"yumngprx"
+"bbdj"
+"czbggabkzo\"wsnw\"voklp\"s"
+"acwt"
+"aqttwnsohbzian\"evtllfxwkog\"cunzw"
+"ugvsgfv"
+"xlnillibxg"
+"kexh\"pmi"
+"syvugow"
+"m\"ktqnw"
+"yrbajyndte\\rm"
+"f\"kak\x70sn\xc4kjri"
+"yxthr"
+"alvumfsjni\"kohg"
+"trajs\x5brom\xf1yoijaumkem\"\"tahlzs"
+"\"oedr\"pwdbnnrc"
+"qsmzhnx\""
+"\"msoytqimx\\tbklqz"
+"mjdfcgwdshrehgs"
+"\"rivyxahf\""
+"ciagc\x04bp"
+"xkfc"
+"xrgcripdu\x4c\xc4gszjhrvumvz\"mngbirb"
+"gvmae\"yiiujoqvr\"mkxmgbbut\"u"
+"ih"
+"ncrqlejehs"
+"mkno\x43pcfdukmemycp"
+"uanzoqxkpsksbvdnkji\"feamp"
+"axoufpnbx\\ao\x61pfj\"b"
+"dz\\ztawzdjy"
+"ihne\"enumvswypgf"
+"\"dgazthrphbshdo\\vuqoiy\""
+"dlnmptzt\\zahwpylc\\b\"gmslrqysk"
+"mhxznyzcp"
+"rebr\"amvxw\x5fmbnfpkkeghlntavj"
+"lades\x47ncgdof\"\"jmbbk"
+"dwxuis\xa5wdkx\\z\"admgnoddpgkt\\zs"
+"g\\k\x27qsl\x34hwfglcdxqbeclt\xca\\"
+"lhyjky\\m\"pvnm\\xmynpxnlhndmahjl"
+"c\"uxabbgorrpprw\"xas\\vefkxioqpt"
+"rfrvjxpevcmma\x71gtfipo"
+"fgh\"kcwoqwfnjgdlzfclprg\"q"
+"onxnwykrba"
+"hkkg\x60f\"tjzsanpvarzgkfipl"
+"\"aintes\"ofq\"juiaqlqxmvpe\\a"
+"wiyczzs\"ciwk"
+"mfqeu"
+"v\xe1z\x7ftzalmvdmncfivrax\\rjwq"
+"k\"vtg"
+"exhrtdugeml\xf0"
+"behnchkpld"
+"mhgxy\"mfcrg\xc5gnp\"\"osqhj"
+"rlvjy"
+"awe"
+"ctwy"
+"vt"
+"\x54t"
+"zugfmmfomz"
+"cv\"cvcvfaada\x04fsuqjinbfh\xa9cq\xd2c\"d"
+"oj"
+"xazanf\"wbmcrn"
+"\\\\zkisyjpbzandqikqjqvee"
+"dpsnbzdwnxk\\v"
+"sj\"tuupr\\oyoh"
+"myvkgnw\x81q\xaaokt\\emgejbsyvxcl\\\xee"
+"ejeuqvunjcirdkkpt\"nlns"
+"twmlvwxyvfyqqzu"
+"\"xwtzdp\x98qkcis\"dm\\\"ep\"xyykq"
+"vvcq\\expok"
+"wgukjfanjgpdjb"
+"\"mjcjajnxy\\dcpc"
+"wdvgnecw\\ab\x44klceduzgsvu"
+"dqtqkukr\"iacngufbqkdpxlwjjt"
+"\"xj\"\x66qofsqzkoah"
+"nptiwwsqdep"
+"gsnlxql\x30mjl"
+"yeezwokjwrhelny\""
+"bjauamn\\izpmzqqasid"
+"tvjdbkn\"tiziw\x82r"
+"w"
+"xwoakbbnjnypnaa\xa9wft\"slrmoqkl"
+"vwxtnlvaaasyruykgygrvpiopzygf\"vq"
+"qdancvnvmhlmpj\\isdxs"
+"xzc\\elw"
+"b\"wxeqvy\"qf\"g\xcaoklsucwicyw\"dovr"
+"yomlvvjdbngz\"rly\"afr"
+"bfb\"x\"aweuwbwmoa\x13\"t\"zhr"
+"\"dmfoxb\"qvpjzzhykt\xd2\"\"ryhxi"
+"psqef\"yu\\qiflie\"\x79w"
+"arzewkej\"lqmh\\sayyusxxo\\"
+"vuvvp"
+"hc\"lg\x6bcpupsewzklai\"l"
+"cjdfygc\"auorqybnuqghsh\x10"
+"j"
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+"dws\"ru\"dvxfiwapif\"oqwzmle"
+"agcykg\\jt\\vzklqjvknoe"
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+"nnpipxufvbfpoz\"jno"
+"dtw"
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+"mxea\\mbjpi"
+"lgbotkk\"zmxh\\\\qji\"jszulnjsxkqf"
+"lwckmhwhx\"gmftlb\x91am"
+"xxdxqyxth"
+"\"lmqhwkjxmvayxy"
+"tf"
+"qy"
+"wdqmwxdztax\"m\"\x09\x11xdxmfwxmtqgwvf"
+"\xcbnazlf\"ghziknszmsrahaf"
+"e\x6aupmzhxlvwympgjjpdvo\"kylfa"
+"\x81vhtlillb\xactgoatva"
+"dvnlgr"
+"f"
+"xg\xfacwizsadgeclm"
+"vnnrzbtw\"\\prod\\djbyppngwayy\""
+"lrt\xf4jahwvfz"
+"aqpnjtom\"ymkak\\dadfybqrso\\fwv"
+"gz\"aac\"mrbk\"ktommrojraqh"
+"wycamwoecsftepfnlcdkm"
+"nrhddblbuzlqsl\x9cben"
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+"sil\xbbtevmt\"gvrvybui\"faw\"j"
+"cjex\\tp\x45pzf"
+"asjobvtxszfodgf\"ibftg"
+"gkyjyjdrxdcllnh\"sjcibenrdnxv"
+"oswsdpjyxpbwnqbcpl\"yrdvs\\zq"
+"\"\"tyowzc\\fycbp\"jbwrbvgui"
+"cbpcabqkdgzmpgcwjtrchxp"
+"iyrzfh\x45gw\"fdlfpiaap\x31xqq"
+"evgksznidz"
+"b\\w\\"
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+"qjfyk"
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+"usbbmwcxd\\bdgg"
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+"eke\\cqvpexqqk\"to\"tqmljrpn\xe6lji\""
+"g\xd2ifdsej"
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+"wfkuffdxlvm\\cvlyzlbyunclhmpp"
+"myaavh\"spue"
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+"ilqvar"
+"srh"
+"puuifxrfmpc\"bvalwi\x2blu\\"
+"yywlbutufzysbncw\\nqsfbhpz\"mngjq"
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+"hjdouiragzvxsqkreup\\"
+"qi"
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+"k"
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+"cqv\"bgjozjj\x60x\xa8yhvmdvutchjotyuz"
+"hkuiet\"oku\x8cfhumfpasl"
+"\"\\sbe\x4d"
+"vhknazqt"
+"eyyizvzcahgflvmoowvs\\jhvygci"
+"kki\x3ewcefkgtjap\"xtpxh\"lzepoqj"
+"wvtk"
+"\"ynet"
+"zh\\obk\"otagx\x59txfzf"
+"ocowhxlx\xe6zqg\x63wx\\tclkhq\\vmaze"
+"w\"cf"
+"qpniprnrzrnvykghqnalr"
+"jctcqra\"\x05dhlydpqamorqjsijt\\xjdgt"
+"sig"
+"qhlbidbflwxe\"xljbwls\x20vht"
+"irmrebfla\xefsg\"j"
+"nep"
+"hjuvsqlizeqobepf"
+"guzbcdp\"obyh"
+"\"mjagins\xf9tqykaxy\""
+"knvsdnmtr\"zervsb"
+"hzuy"
+"zza\"k\"buapb\\elm\xfeya"
+"lrqar\"dfqwkaaqifig\"uixjsz"
+"\"azuo\x40rmnlhhluwsbbdb\x32pk\\yu\"pbcf"
+"dplkdyty"
+"rfoyciebwlwphcycmguc"
+"ivnmmiemhgytmlprq\\eh"
+"lhkyzaaothfdhmbpsqd\\yyw"
+"tnlzifupcjcaj"
+"\\qiyirsdrfpmu\\\x15xusifaag"
+"\\lcomf\\s"
+"uramjivcirjhqcqcg"
+"kkbaklbxfxikffnuhtu\xc6t\"d"
+"n\xefai"
+"\"toy\"bnbpevuzoc\"muywq\"gz\"grbm"
+"\"muu\\wt"
+"\\srby\"ee"
+"erf\"gvw\"swfppf"
+"pbqcgtn\"iuianhcdazfvmidn\\nslhxdf"
+"uxbp"
+"up\\mgrcyaegiwmjufn"
+"nulscgcewj\\dvoyvhetdegzhs\""
+"masv\"k\\rzrb"
+"qtx\x79d\"xdxmbxrvhj"
+"fid\\otpkgjlh\"qgsvexrckqtn\xf4"
+"tagzu"
+"bvl\\\"noseec"
+"\\xgicuuh"
+"w\"a\"npemf"
+"sxp"
+"nsmpktic\x8awxftscdcvijjobnq\"gjd"
+"uks\"\"jxvyvfezz\"aynxoev\"cuoav"
+"m"
+"lkvokj"
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+"lmqzadwhfdgmep\x02tzfcbgrbfekhat"
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+"mvtm"
+"lt\"bbqzpumplkg"
+"ntd\xeeuwweucnuuslqfzfq"
+"y\xabl\"dbebxjrlbmuoo\\\x1au"
+"qjoqx\\a"
+"pu\"ekdnfpmly\xbago\""
+"fjhhdy"
+"arl"
+"xcywisim\"bwuwf\"\"raepeawwjub"
+"pbe"
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+"ojv\x40vtkwgkqepm\x8bzft\\vedrry"
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+"\"aglg"
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+"\"\\fdktlp"
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+"\xbedovhxuipaohlcvkwtxwmpz\"ckaif\"r"
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