Convert requires into a graph - this is pretty dreadful please can someone do better?

go.sh

egrep -e "require\s\"([a-z]|_|/)+\"" -o -r lib | ./sniffrequires.rb  | dot -Tsvg > /tmp/foo.svg; open /tmp/foo.svg

sniffrequires.rb

#!/usr/bin/ruby

puts "digraph {"
$stdin.each do | line |
  /lib\/(?<from>(\w|\/)+)(\.rb)?:require \"(?<to>(\w|\/)+)/i =~ line
  puts "\t #{from.gsub("/", "_")} -> #{to.gsub("/", "_")}"
end

puts "}"

Creates something like

https://www.dropbox.com/s/lr1czff32zdccz1/foo.png?dl=0

Anyone has a better approach let me know. Just hacked this together to see why guard/rspec had so many circular dependency warnings.

Looks like it does the job pretty well. Your grep will miss files that have underscores or dashes in them, or use single quotes instead of double. You could make the regular expressions a bit more accurate like so: egrep -e "requires\s*[\"'][^\"']+[\"']" ... and %r{lib/(?<from>.+?)(\.rb)?:require\s*["'](?<to>[^'"]+)["']}

Thanks - been gradually refining it as I realised I missed stuff! To be honest it's pretty horrible and if I was going to do it again I would probably use a real grown up parser not regex :D

To be fair, the parser version is possibly worse :D

https://github.com/jennifersmith/rubygraph