Enum debugging automation for Objective C, eg. with a TextExpander snippet

gistfile1.rb

#!/usr/bin/ruby

def NSStringFromEnum(input)
  inputArray = input.lines.collect
  typeNameLine = inputArray[-1]
  typeName = typeNameLine.match(/(\w+);/)[1]

  output = "NSString* NSStringFrom#{typeName}(#{typeName} value) {\n    switch (value) {\n";

  constantLines = inputArray[1..-2]
  constantLines.each {|constantLine|
    constantName = constantLine.match(/(\w+)/)[1]
    output += "        case #{constantName}:\n";
    output += "            return @\"#{constantName}\";\n";
    output += "            break;\n";
  }
  output += "        default:\n";
  output += "            return [NSString stringWithFormat:@\"<unknown #{typeName}: %d>\", value];\n";

  output + "    }\n}"
end

clipboard = %x{__CF_USER_TEXT_ENCODING=$UID:0x8000100:0x8000100 pbpaste}.strip

print NSStringFromEnum(clipboard)

As seen on: http://rentzsch.tumblr.com/post/37512716957/enum-nsstring

This makes it super easy to use with TextExpander. Copy paste your enum definition, type your TextExpander command and this will create the enum debugging help in place.