allow for non formula.rb files

Author: tmm1

bin/brew2deb

@@ -2,11 +2,16 @@
 require 'optparse'
 require 'fileutils'
 
-unless File.exists?('formula.rb')
+formula = ARGV.find{ |arg| arg =~ /\.rb$/ and File.exists?(arg) }
+formula ||= 'formula.rb'
+
+unless File.exists?(formula)
   STDERR.puts '*** No formula.rb found in the working directory'
   exit(1)
 end
 
+Dir.chdir File.dirname(File.expand_path(formula))
+
 if ARGV.include? 'clean'
   FileUtils.rm_rf %w[ tmp-build tmp-install ], :verbose => true
   exit
@@ -20,8 +25,9 @@ HOMEBREW_WORKDIR = Pathname.new(Dir.pwd)
 HOMEBREW_CACHE = HOMEBREW_WORKDIR+'src'
 FileUtils.mkdir_p(HOMEBREW_CACHE)
 
-require './formula'
+$:.unshift File.expand_path('.')
+load formula
 
-klass = File.read('formula.rb')[/class (\w+)/, 1]
+klass = File.read(formula)[/class (\w+)/, 1]
 eval(klass).package!