Automate the boring staff with Ruby

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ୀ۶ͳ͜ͱ͸ 3VCZʹ͓Ͷ͕͍͠Α͏ 2020.12.27. Tama.rb #25 ೥๨ΕLTձ @makicamel

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w!NBLJDBNFM઒ݪສق wɹ w3VCZͱϏʔϧɹɹͱ͓ञ͕޷͖ ࣗݾ঺հ

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͓खݩͷRails ΞϓϦʹ BQQMJDBUJPO@DPOUSPMMFSSC ͍ͭ͋͘Γ·͔͢ʁ ಥવͰ͕͢ ܧঝͱϝλϓϩάϥϛϯάຬࡌͳΞϓϦέʔγϣϯίʔυͰ΋ΞΫγϣϯͱϑΟϧλʹ೰·ͳ͍ͨΊͷ(FNΛ࡞ͬͨ࿩ IUUQTTQFBLFSEFDLDPNNBLJDBNFMMFUTFOKPZDSFBUJOHHFNT

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˞೥݄೔࣌఺ "/%1"% # => 325 $ find . -name application_controller.rb | wc -l

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˞೥݄೔ݱࡏ "/%1"% $ fd application_controller.rb | wc -l # => 49 # => 325 ˞೥݄೔࣌఺ $ find . -name application_controller.rb | wc -l 85%ݮʂ ͍͢͝Ͷ

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ॳख •ͻͱͭͻͱͭखͰஔ͖׵͑Δ •σΟϨΫτϦຖʹ౗͍͚ͯ͠͹͍͍͸ͣ •ࠓ·Ͱͷ׳ྫ΋कΒΕͯແடংʹͳΒͳ͍ •2 PullRequests Ͱ໿ 40 ϑΝΠϧ࡟আ •࣌ؒͱࠜؾͱूதྗͷඞཁͳ࡞ۀ

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खΛಈ͔ͯ͠ؾͮ͘ •εΫϦϓτͰ͍͚ΔͷͰ͸ʁ

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ཌ݄༵೔

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ཌ݄༵೔ ࢒໿ 240 ϑΝΠϧ͸দా͞Μ͕౗ͯ͘͠Ε·ͨ͠

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εΫϦϓτͰ΍Δͱ ͳʹ͕͏Ε͍͠ͷ͔

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εΫϦϓτͰ΍Δͱ •࡞ۀϛε͕ͳ͍ •ਓؒ͸ؒҧ͑Δ •ϓϩάϥϜ͸໊લ͕ࣅ͍ͯΔϞδϡʔϧ͕͋ͬͯ΋ؒҧ͑ͳ͍ •ϛεʹ஫ҙΛ෷Θͳͯ͘Α͍ͷͰϨϏϡʔෛ୲͕ݮΔ

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εΫϦϓτͰ΍Δͱ •࠶ݱੑ͕ߴ͍ •ߟྀ࿙Ε͕͋ͬͯ΋ԿճͰ΋΍Γ௚͠Մೳ •ख࡞ۀͰಉ͡࡞ۀɾݕূΛ܁Γฦ͞ͳͯ͘Α͍

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εΫϦϓτͰ΍Δͱ •࠶ར༻ੑ͕ߴ͍ •৚݅Λม͑ͯΑΓ෯޿͍໰୊ʹద༻Ͱ͖Δ •ૣ͍ •80 ϑΝΠϧͷ࡟আ͕਺ඵ •ίϛοτͷ࡞੒΋Ͱ͖Δ

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εΫϦϓτͰ΍Δͱ •࣮֬ •ʮ֬ೝͷ Rails.application.eager_load! ๨Εͨʂʯͱ͔ͳ͍ •ʮrubocop -a ๨Εͨʂʯͱ͔ͳ͍

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εΫϦϓτͰ΍Δͱ •ؾ͍͍࣋ͪ •Ruby ͷΑ͞ •୯७࡞ۀ͸ͭ·Βͳ͍ɾ͖͋Δɾूதྗɾࠜؾ͕ඞཁ •࢓ࣄͷ߹ؒʹؾ߹͍Ͱ΍͍ͬͯΔͷͰΤλΔ •ؾ͍͍࣋ͪͱΤλΒͳ͍ʂ

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εΫϦϓτͰ΍Δͱ •໰୊ͷ੾Γ෼͚ํ͕ҟͳΔ •ख࡞ۀ࣌ɿʮਓ͕ؒཧղ͢Δҙຯͷ୯Ґʯ •Θ͕ͨ͠࡞ۀͨ͠ͷ͸໊લۭؒ୯Ґ •εΫϦϓτ࣌ɿʮઃఆͨ͠৚݅୯Ґʯ •দా͞Μ͕࠷ॳʹઃఆͨ͠৚݅͸ʮ͔ΒͬΆͳίϯτϩʔϥʯ •ҙຯ͝ͱʹద༻΋Ͱ͖Δ͕ʮશ෦౗͢ʯͱ͍͏࡞ઓͰ΍ͬͨํָ͕

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΍ͬͯΈΑ͏

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DBTF •ActiveSupport::Concern ͷ included ϒϩοΫͷ࢖༻ΛݮΒ͍ͨ͠

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DBTF •ActiveSupport::Concern ͷ included ϒϩοΫͷ࢖༻ΛݮΒ͍ͨ͠ module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA include EnergeticGreeting end GreetingA.new.hi # => "٩(ˊᗜˋ*)و" •include ͞Εͨ࣌ʹ ϒϩοΫ಺ͷίʔυ͕࣮ߦ͞ΕΔ

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•Ϟδϡʔϧ͕ include ͞ΕΔ౓ʹ࣮ߦ͞ΕΔ •ϞδϡʔϧͷΠϯελϯεม਺ʹϒϩοΫΛ࣋ͪଓ͚Δ •ਅͷϝιουఆٛʹؾΛ഑Δඞཁ͕͋Δ •ϦϑΝΫλϦϯάʹ༨ܭͳίετ͕͔͔Δ includedϒϩοΫ ͨ·ʹ࢖͏ʹ͸ ΂ΜΓͩΑ

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module DepressedGreeting def hi p 'ʢ◞‸◟ʣ' end end class GreetingB include DepressedGreeting end GreetingB.new.hi # => “ʢ◞‸◟ʣ” includedϒϩοΫ •Πϯελϯεϝιου͸ Module#includeͰੜ΍ͤΔ

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module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA def hi p 'hi' end include EnergeticGreeting end GreetingA.new.hi # => "٩(ˊᗜˋ*)و" module DepressedGreeting def hi p 'ʢ◞‸◟ʣ' end end class GreetingB def hi p 'hi' end include DepressedGreeting end GreetingB.new.hi # => "hi" ʮਅͷϝιουఆٛʯ

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module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA def hi p 'hi' end include EnergeticGreeting end GreetingA.new.hi # => "٩(ˊᗜˋ*)و" ʮਅͷϝιουఆٛʯ module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA2 include EnergeticGreeting def hi p 'hi' end end GreetingA2.new.hi # => "hi"

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•Module#include •Ϋϥεͷܧঝؔ܎ͷؒʹϞδϡʔϧ͕ૠೖ͞ΕΔ •ͨͩͷΦʔϓϯΫϥεͳͷͰݺͼग़͠ݩ͕༏ઌ •ActiveSupport::Concern •ࠇຐज़Λར༻ •هड़͕ޙͷํ͕༏ઌ Ή͔͍ͣ͠Ͷ͐ ʮਅͷϝιουఆٛʯ

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module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA def hi p 'hi' end include EnergeticGreeting end GreetingA.new.hi # => "٩(ˊᗜˋ*)و" ʮਅͷϝιουఆٛʯ module EnergeticGreeting extend ActiveSupport::Concern included do def hi p '٩(ˊᗜˋ*)و' end end end class GreetingA2 include EnergeticGreeting def hi p 'hi' end end GreetingA2.new.hi # => "hi"

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•Ϟδϡʔϧ͕ include ͞ΕΔ౓ʹ࣮ߦ͞ΕΔ •ϞδϡʔϧͷΠϯελϯεม਺ʹϒϩοΫΛ࣋ͪଓ͚Δ •ਅͷϝιουఆٛʹؾΛ഑Δඞཁ͕͋Δ •ϦϑΝΫλϦϯάʹ༨ܭͳίετ͕͔͔Δ includedϒϩοΫ ࡟আΛࢼΈͨ PullRequest ΋͕͋ͬͨ ਅͷϝιουఆٛ໰୊͕ݪҼͰClose

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Ϟδϡʔϧ಺ͷϝιου͕࠶ఆٛ͞Ε͍ͯͳ͚Ε͹ included ϒϩοΫΛ֎͍͍ͯ͠ͱݴ͑ΔͷͰ͸

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εΫϦϓτσϏϡʔ

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•খ࢝͘͞Ίͨ •͜ͷ࣌ͷର৅ϑΝΠϧ͸11ϑΝΠϧ •ϨϏϡʔ͕༰қ •εΫϦϓτ΋ description ʹష͓ͬͯ͘ •ϨϏϡʔͷҰॿʹͳΔ͔΋ •ϑΟʔυόοΫ͕͋ͬͯษڧʹͳͬͨΓ͢Δ εΫϦϓτσϏϡʔ

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•`ʢόοΫΫΥʔτʣ •ίϚϯυͱ࣮ͯ͠ߦ͞Εɺͦͷඪ४ग़ྗ͕จࣈྻͱͯ͠༩͑ΒΕΔ •͜ͷதͷจࣈྻ͸μϒϧΫΥʔτͱಉ༷ͷղऍͱࣜల։͕ߦΘΕΔ ΂ΜΓͳಓ۩ͨͪ Ϧςϥϧ 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBEPDTQFDqJUFSBMIUNMDPNNBOE files = `git grep -l "included" -- 'app/controllers'` `git commit -m 'Inline #{namespace}::#{module_name}'`

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•git grep •git ؅ཧԼͷϑΝΠϧΛ grep •ਖ਼نදݱͱ͔σΟϨΫτϦࢦఆ(include/exclude)ͱ͔ ͍ΖΜͳΦϓγϣϯ͕͋ͬͯ΂ΜΓ ΂ΜΓͳಓ۩ͨͪ files = `git grep -l "included" -- 'app/controllers'`

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•File.read •ϑΝΠϧಡΈࠐΈ •ϑΝΠϧύε͕Θ͔Ε͹ಡΈࠐΜͰจࣈྻͱͯ͠ॲཧͰ͖Δ ΂ΜΓͳಓ۩ͨͪ src = File.read File.expand_path(filename) *0SFBE 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE*0JSFBEIUNM

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•String#scan •Ϩγʔόʹର͠ਖ਼نදݱΛ܁Γฦ͠Ϛον͠ɺ෦෼จࣈྻͷ഑ྻΛฦ͢ •Ϛονάϧʔϓ΋΂ΜΓͦ͏ ΂ΜΓͳಓ۩ͨͪ 4USJOHTDBO 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJTDBOIUNM methods = src.scan(/def (.*)$/).flatten

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•sed •จࣈྻΛஔ׵ͨ͠Γ࡟আͨ͠ΓςΩετॲཧͷͰ͖ΔίϚϯυ •ϫϯϥΠφʔͰಛʹ΂ΜΓ ΂ΜΓͳಓ۩ͨͪ TFEίϚϯυcίϚϯυͷ࢖͍ํ -JOVY cIZESPDVMͷϝϞ IUUQTIZESPDVMHJUIVCJPXJLJDPNNBOETTFEIUNM `sed -i '' '#{line}d' #{filename}`

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DBTF •1Օॴ͔Β͔͠ݺ͹Ε͍ͯͳ͍ϞδϡʔϧΛ࡟আͯ͠ΠϯϥΠϯʹ͍ͨ͠

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DBTF •1Օॴ͔Β͔͠ݺ͹Ε͍ͯͳ͍ϞδϡʔϧΛ࡟আͯ͠ΠϯϥΠϯʹ͍ͨ͠ •FatίϯτϩʔϥରࡦʢͨͿΜʣͰϝιουΛϞδϡʔϧʹ੾Γग़͍ͯ͠Δ •ίʔυ͕௥͍ͮΒ͍ •ϦϑΝΫλϦϯά࣌ʹϞδϡʔϧશ෦֬ೝ͢Δඞཁ͕͋ͬͯίετ

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DBTF

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•String#remove! •จࣈྻ΍ਖ਼نදݱΛड͚औΓɺϚονͨ͠จࣈྻΛ܁Γฦ͠࡟আ͢Δ •ࡶʹ࢖͑Δॻ͖৺஍͕ͱͯ΋͖͢ ΂ΜΓͳಓ۩ͨͪ SFNPWF 4USJOH "1*EPDL IUUQTBQJEPDLDPNSBJMTW4USJOHSFNPWF target_src.remove!( /module .*#{module_name}$/, /^\s*extend ActiveSupport::Concern/, /^\s*included do/ )

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•String#sub! •จࣈྻ΍ਖ਼نදݱΛड͚औΓɺϚονͨ͠࠷ॳͷจࣈྻΛஔ׵͢Δ •ϑΝΠϧ A ͷ಺༰ΛϑΝΠϧ B ʹ࣋ͬͯ͘Δ࣌ʹ΂ΜΓ ΂ΜΓͳಓ۩ͨͪ 4USJOHTVC 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJTVCIUNM src.sub!(/^\s*include #{module_name}$/, target_src)

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•String#[] •ୈҰҾ਺ʹਖ਼نදݱɺୈೋҾ਺ʹintegerΛऔͬͯ ୈೋҾ਺൪໨ͷׅހʹϚον͢Δ࠷ॳͷ෦෼จࣈྻΛฦ͢ ΂ΜΓͳಓ۩ͨͪ 4USJOH<> 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJCEIUNM namespace = src[/class (.*?)Controller/, 1]

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DBTF •RailsͷϞσϧͷΠϯελϯεϝιουͷ͏ͪ ಛఆͷจࣈྻΛؚΉϞσϧͱϝιουΛྻڍ͍ͨ͠

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DBTF

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•rails runner •Rails ͷจ຺Ͱ Ruby ίʔυΛ࣮ߦͰ͖Δ •Rails ʹฉ͘ͱ͍Ζ͍Ζڭ͑ͯ͘ΕΔ ΂ΜΓͳಓ۩ͨͪ 3BJMTͷίϚϯυϥΠϯπʔϧ3BJMTΨΠυ IUUQTSBJMTHVJEFTKQDPNNBOE@MJOFIUNMSBJMTSVOOFS rails runner script.rb

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•Object#methods, Module#instance_methods •Ϩγʔό͕͍࣋ͬͯΔϝιου / ΠϯελϯεϝιουΛҰ๬͢Δ ΂ΜΓͳಓ۩ͨͪ 0CKFDUNFUIPET 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE0CKFDUJNFUIPETIUNM .PEVMFJOTUBODF@NFUIPET 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE.PEVMFJJOTUBODF@NFUIPETIUNM klass.instance_methods.select { |method| method.to_s.start_with? ‘awesome' }

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•Method#source_location •ϝιου͕ ruby Ͱఆٛ͞Ε͍ͯΔ৔߹ίʔυͷϑΝΠϧ໊ͱߦ൪߸Λฦ͢ •ϝιου͕ C Ͱఆٛ͞Ε͍ͯΔ৔߹ nil Λฦ͢ •e.g. ϓϩμΫγϣϯίʔυͰఆٛ͞Εͨಛఆͷ໊લͷϝιουΛநग़͢Δ ΂ΜΓͳಓ۩ͨͪ .FUIPETPVSDF@MPDBUJPO 3VCZϦϑΝϨϯεϚχϡΞϧ IUUQTEPDTSVCZMBOHPSHKBNFUIPE.FUIPEJTPVSDF@MPDBUJPOIUNM if klass.instance_method(:awesome).source_location.first.include? "my_app"

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•Method#source •ruby Ͱॻ͔ΕͨϝιουͷίʔυΛऔಘ͢Δ •display ΛݺͿͱਓؒʹ༏͘͠ग़ྗ͢Δ ΂ΜΓͳಓ۩ͨͪ NFUIPE@TPVSDFNFUIPE@TPVSDFSCBUWuCBOJTUFSNFUIPE@TPVSDF IUUQTHJUIVCDPNCBOJTUFSNFUIPE@TPVSDFCMPCWMJCNFUIPE@TPVSDFSC-- if klass.instance_method(method).source =~ /\bhi\b/

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·ͱΊ •εΫϦϓτ͸΂ΜΓ •.rb ϑΝΠϧ΋ͨͩͷจࣈྻ •Ruby ΍ Rails ͸͍ΖΜͳ͜ͱΛ஌͍ͬͯΔ •;ͩΜ࢖͍ͬͯΔϝιου΋ݟํΛม͑Δͱੈք͕޿͕Δ