Clean Imports.rb

#!/usr/bin/env ruby
 
require "#{ENV['TM_SUPPORT_PATH']}/lib/exit_codes.rb"
 
lines = STDIN.readlines
doc = lines.join
 
importRegex = /^\s*import /
classCapture = /\.(\w+)\s*;$/
packageCapture = /^\s*import\s+(\w+)/
 
lines.delete_if { |line|
  if (line.match(importRegex)) 
	matches = line.match(classCapture)
	(matches && doc.scan(matches.captures.first).length <= 1)
  end
  false
}
 
firstImport = false
lastImport = false
lines.each_with_index{|line, i|
  if (line.match(importRegex))
    firstImport ||= i
    lastImport = i
  end
}
 
TextMate::exit_show_tool_tip("No imports") unless (firstImport && lastImport)
 
importLines = lines.slice!(firstImport..lastImport).delete_if{|line| line.strip.empty?};
 
TextMate::exit_show_tool_tip("Imports mixed") if (importLines.any?{|line| !line.match(importRegex)})
 
importLines.uniq!
importLines.sort!
 
lastPackage = importLines.first.match(packageCapture).captures.first
importLines.map!{|line|
  retArray = [line];
  newPackage = line.match(packageCapture).captures.first
  retArray.unshift("\n") if (newPackage != lastPackage)
  lastPackage = newPackage
  retArray
}.flatten!
 
puts lines.insert(firstImport, importLines).join