Cocoa Method Signature Completion.tmCommand

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>beforeRunningCommand</key>
	<string>nop</string>
	<key>bundleUUID</key>
	<string>4679484F-6227-11D9-BFB1-000D93589AF6</string>
	<key>command</key>
	<string>#!/usr/bin/env ruby18
require ENV['TM_SUPPORT_PATH'] + "/lib/exit_codes"
require "#{ENV['TM_SUPPORT_PATH']}/lib/escape"

line = ENV['TM_CURRENT_LINE']

def construct_arg_name(arg)
	a = arg.match(/(NS|AB|CI|CD)?(Mutable)?(([AEIOQUYi])?[A-Za-z_0-9]+)/)
	unless a.nil?
		(a[4].nil? ? "a": "an") + a[3].sub!(/\b\w/) { $&amp;.upcase }
	else
		""
	end
end

def prettify(cand, call)
  stuff = cand.split("\t")
  if stuff[0].count(":") &gt; 0
    name_array = stuff[0].split(":")
    out = ""
    begin
      stuff[-(name_array.size)..-1].each_with_index do |arg,i|
        if arg == "SEL"
          out &lt;&lt; name_array[i] +  ":(SEL)"+ "aSelector "
        else
          out &lt;&lt; name_array[i] +  ":("+ arg.gsub(/ \*/,(ENV['TM_C_POINTER'] || " *").rstrip)+")"+ "#{construct_arg_name(arg)} "
        end
      end
    rescue NoMethodError
      out &lt;&lt; stuff[0]
    end
  else
    out = stuff[0]
  end
  out = "(#{stuff[5].gsub(/ \*/,(ENV['TM_C_POINTER'] || " *").rstrip)})#{out}" unless call || (stuff.size &lt; 4)

  return [out.chomp.strip, stuff[0], cand]
end

def snippet_generator(cand, start, call)
start = 0
  stuff = cand[start..-1].split("\t")
  if stuff[0].count(":") &gt; 0

    name_array = stuff[0].split(":")
    name_array = [""] if name_array.empty? 
    out = ""
    begin
      stuff[-(name_array.size)..-1].each_with_index do |arg,i|
          if arg == "SEL"
            out &lt;&lt; name_array[i] + ":(#{arg})${#{(i+1).to_s}:aSelector} " 
          else
            out &lt;&lt; name_array[i] + ":(#{arg.gsub(/ \*/,(ENV['TM_C_POINTER'] || " *").rstrip)})${#{(i+1).to_s}:#{construct_arg_name(arg)}} "
          end
      end
    rescue NoMethodError
      out &lt;&lt; stuff[0]
    end
  else
    out = stuff[0]
  end
out = "(#{stuff[5].gsub(/ \*/,(ENV['TM_C_POINTER'] || " *").rstrip)})#{out}" unless (stuff.size &lt; 4)
  if ENV['TM_SCOPE'].include? "meta.scope.implementation.objc"
    if stuff[5].match(/^void$/) || stuff[5].match(/IBAction/)
      rv = ""
    elsif stuff[5].match(/^BOOL$/)
      rv = "\treturn ${1:Y}${1/^(?:(Y)|(N)|.*)/(?1:ES:(?2:O))/};\n"
    else
      rv = "\treturn nil;\n"
    end
    
    out = out.chomp.strip + "\n\{$0\n#{rv}\}"
  else
    out = out.chomp.strip + "$0;"
  end
  return out
end

def pop_up(candidates, searchTerm, call = true)
  start = searchTerm.size
  prettyCandidates = candidates.map { |candidate| prettify(candidate,call) }.sort

if prettyCandidates.size &gt; 1
    require "enumerator"
    pruneList = []  

    prettyCandidates.each_cons(2) do |a| 
      pruneList &lt;&lt; (a[0][0] != a[1][0]) # check if prettified versions are the same
    end
    pruneList &lt;&lt; true
    ind = -1
    prettyCandidates = prettyCandidates.select do |a| #remove duplicates
      pruneList[ind+=1]  
    end
  end
  prettyCandidates = prettyCandidates.sort {|x,y| x[1].downcase &lt;=&gt; y[1].downcase }
  if prettyCandidates.size &gt; 1
    #index = start
    #test = false
    #while !test
    #  candidates.each_cons(2) do |a,b|
    #    break if test = (a[index].chr != b[index].chr || a[index].chr == "\t")
    #  end
    #  break if test
    #  searchTerm &lt;&lt; candidates[0][index].chr
    #  index +=1
    #end
    
    show_dialog(prettyCandidates,start) do |c,s|
			snippet_generator(c,s, call)
		end
  else
    snippet_generator( candidates[0], start, call )
  end
end

def show_dialog(prettyCandidates,start,&amp;snip_gen)
    require "#{ENV['TM_SUPPORT_PATH']}/lib/osx/plist"
    pl = {'menuItems' =&gt; prettyCandidates.map { |pretty,junk, full | { 'title' =&gt; pretty, 'cand' =&gt; full} }}
    io = open('|"$DIALOG" -u', "r+")
    io &lt;&lt;  pl.to_plist
    io.close_write
    res = OSX::PropertyList::load(io.read)
    if res.has_key? 'selectedMenuItem'
      snip_gen.call( res['selectedMenuItem']['cand'], start )
    else
      "$0"
    end
end

def candidates_or_exit(methodSearch, list, fileNames, notif = false)
	x = candidate_list(methodSearch, list, fileNames, notif)
  TextMate.exit_show_tool_tip "No completion available" if x.empty?
  return x
end

def candidate_list(methodSearch, list, fileNames, notif = false)
  candidates = []
  fileNames.each do |fileName|
    zGrepped = %x{ zgrep ^#{e_sh methodSearch } #{e_sh ENV['TM_BUNDLE_SUPPORT']}/#{fileName} }
    candidates += zGrepped.split("\n")
  end
  # strip notifications
  if notif
	  candidates = candidates.select {|cand| cand.match(/\tno\t/) }
	else
    candidates = candidates.reject {|cand| cand.match(/\tno\t/) }
  end
  return [] if candidates.empty?
  if list.nil?
    return candidates
  else
    n = []
    candidates.each do |cand|
      n &lt;&lt; cand if list.include?(cand.split("\t")[0])
    end
    n = (n.empty? ? candidates : n)

    return n
  end
end

methodDeclaration = /^((?:\+|-)\s*)([a-zA-Z][a-zA-Z0-9:]*)$/

if k = line.match(methodDeclaration)
  candidates = candidates_or_exit( k[2], nil, "CocoaMethods.txt.gz")
  res =pop_up(candidates, k[2])
  TextMate.exit_discard if res == "$0"
  print k[1] + res
else
  TextMate.exit_discard
end
</string>
	<key>fallbackInput</key>
	<string>line</string>
	<key>input</key>
	<string>selection</string>
	<key>keyEquivalent</key>
	<string>~</string>
	<key>name</key>
	<string>Completion: Partial Method Signature</string>
	<key>output</key>
	<string>insertAsSnippet</string>
	<key>scope</key>
	<string>meta.function.objc - (meta.argument-type.objc | meta.return-type.objc | meta.bracketed)</string>
	<key>uuid</key>
	<string>30E93FBA-5A81-4D94-8A03-9CD46FCA3CFA</string>
</dict>
</plist>