eurucamp 2012: Almost Sinatra

A fun code analysis.

Transcript

1. Sinatra in 8 Lines How to do crazy stuff with ruby %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{extend  Rack;a,D,S,$p,q,Applica)on=Builder.new,Object.method(:define_method),/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w[get  post  put  delete].map{|m|D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o|$t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" Saturday, August 18, 12
2. Konstantin Travis CI @konstan(nhaase  aka  rkh Saturday, August 18, 12
3. Sinatra Rack,  Tilt,  Rubinius,  ... Saturday, August 18, 12
4. “second to K&R, the most lagom technical book I’ve read.” Peter  Cooper  (Ruby  Inside) discount code: AUTHD 50% off ebook ($6.50) 40% OFF PRINT Saturday, August 18, 12
5. Prepare for strange code slides also,  no  memes  this  4me Saturday, August 18, 12
6. Obfuscation Saturday, August 18, 12
7. Until programmers stop acting like obfuscation is morally hazardous, they’re not artists, just kids who don’t want their food to touch. why  the  lucky  s(ff Saturday, August 18, 12
8. !?! Saturday, August 18, 12
9. !?! # => false Saturday, August 18, 12
10. ?:??::?? Saturday, August 18, 12
11. ?:??::?? Saturday, August 18, 12
12. ?:??::?? # => “:” Saturday, August 18, 12
13. eval \ '51966'+[46,1935634292,32,49,54].pack('clC3') Saturday, August 18, 12
14. eval \ '51966'+[46,1935634292,32,49,54].pack('clC3') # => “cafe” Saturday, August 18, 12
15. eval \ '51966'+['.',1935634292, ' ', '1', '6'].pack('ala3') # => “cafe” Saturday, August 18, 12
16. eval \ '51966'+['.', 'to_s', ' ', '1', '6'].pack('A4') # => “cafe” Saturday, August 18, 12
17. 51966.to_s(16) # => “cafe” Saturday, August 18, 12
18. 0xcaFE # => “cafe” Saturday, August 18, 12
19. enter the heredocs Saturday, August 18, 12
20. Saturday, August 18, 12
21. Saturday, August 18, 12
22. Distraction Saturday, August 18, 12
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24. Saturday, August 18, 12
25. github.com / rkh / almost-sinatra more  popular  than  a  pair  of  socks Saturday, August 18, 12
26. As little code as possible just  eight  lines Saturday, August 18, 12
27. Obfuscation was never the goal just  a  by-­‐product Saturday, August 18, 12
28. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{extend  Rack;a,D,S,$p,q,Applica)on=Builder.new,Object.method(:define_method),/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w[get  post  put  delete].map{|m|D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o|$t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" the code Saturday, August 18, 12
29. What works? Saturday, August 18, 12
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34. Simplify and compress Saturday, August 18, 12
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43. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{extend  Rack;a,D,S,$p,q,Applica)on=Builder.new,Object.method(:define_method),/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w[get  post  put  delete].map{|m|D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o|$t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" the code Saturday, August 18, 12
44. Fake it ‘till you make it Saturday, August 18, 12
45. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{ extend  Rack; a,D,S,$p,q,Applica)on =Builder.new, Object.method(:define_method),/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w[ get  post  put  delete].map{|m|D.(m){|u,&b| a.map(u){run-­‐>(e){ [200,{"Content-­‐Type"=>"text/html"}, [a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o|$t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}}; a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" Saturday, August 18, 12
46. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{extend  Rack;a, D,S,$p,q,Applica)on =Builder.new, Object.method(:define_method) ,/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w [get  post  put  delete].map{|m| D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v| D.(k){|n,*o| $t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[ set  enable  disable  configure  helpers  use  register]. map{|m| D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[ params  session].map{|m| D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b}; before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" Saturday, August 18, 12
47. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new{extend  Rack;a,D, S,$p,q,Applica)on =Builder.new,Object.method(:define_method), /@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m,4567,a %w[get  post  put  delete].map{|m|D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o| $t||=(h={};File.read(caller[0][/^[^:]+/]) .scan(S){|a,b|h[a]=b};h); v[0].new(*o){n.to_s==n  ?n:$t[n.to_s]}. render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}};END{Handler.get("webrick").run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on  #$p  for  development  with  backup  from  Webrick" Saturday, August 18, 12
48. %w.rack  )lt  backports  INT  TERM..map{|l|trap(l){$r.stop}rescue  require  l} $n=Sinatra=Module.new {extend  Rack; a,D,S, $p,q,Applica)on =Builder.new, Object.method(:define_method),/@@  *([^\n]+)\n(((?!@@)[^\n]*\n)*)/m, 4567,a %w[get  post  put  delete].map{|m|D.(m){|u,&b|a.map(u){run-­‐>(e){[200,{"Content-­‐Type"=>"text/html"},[a.instance_eval(&b)]]}}}} Tilt.mappings.map{|k,v|D.(k){|n,*o|$t||=(h={};File.read(caller[0][/^[^:]+/]).scan(S){|a,b|h[a]=b};h);v[0]. new(*o){n.to_s==n  ?n:$t[n.to_s]}.render(a,o[0].try(:[],:locals)||{})}} %w[set  enable  disable  configure  helpers  use  register].map{|m|D.(m){|*_,&b|b.try  :[]}}; END{Handler.get("webrick"). run(a,Port:$p){|s|$r=s}} %w[params  session].map{|m|D.(m){q.send  m}};a.use  Session::Cookie;a.use  Lock D.(:before){|&b|a.use  Rack::Config,&b};before{|e|q=Request.new  e;q.params.dup.map{|k,v|params[k.to_sym]=v}}} puts  "==  almost  #$n/No  Version  has  taken  the  stage  on #$p  for  development  with  backup  from  Webrick" Saturday, August 18, 12
49. It’s all about fun! Saturday, August 18, 12
50. “From now on, I’ll start quoting myself.” Konstan(n  Haase Saturday, August 18, 12
51. “If your app does not run with Almost Sinatra, please open a Sinatra issue.” Konstan(n  Haase Saturday, August 18, 12
52. “Versions are to Software what Subversion is to Git.” Konstan(n  Haase Saturday, August 18, 12
53. “don't include tests. tests just bloat the code base. just commit, the users will complain if you break anything.” Konstan(n  Haase Saturday, August 18, 12
54. BEARS or Horses this  slide  is  for  James  Coglan Saturday, August 18, 12
55. Thank You @konstan(nhaase Saturday, August 18, 12