Build packages on OSX.

Gemfile

@@ -0,0 +1,5 @@
+source "http://rubygems.org"
+
+gemspec
+
+gem 'ruby-debug'

README.md

@@ -78,3 +78,7 @@ $ dpkg --info pkg/git_1.7.5.4-1+github1_amd64.deb
  Homepage: http://git-scm.com
  Description: The Git DVCS with custom patches and bugfixes for GitHub.
 ```
+
+## Building on OSX
+
+Some packages can be built on OSX, but you must install the [dpkg](https://raw.github.com/gist/1137917/318569ae4f6748024fa9416271a012bb97e1f6e5/dpkg-homebrew), findutils, and gnu-tar packages from homebrew.

bin/brew2deb

@@ -1,33 +1,5 @@
 #!/usr/bin/env ruby
-require 'optparse'
-require 'fileutils'
 
-formula = ARGV.find{ |arg| arg =~ /\.rb$/ and File.exists?(arg) }
-formula ||= 'formula.rb'
-
-unless File.exists?(formula)
-  STDERR.puts '*** No formula.rb found in the working directory'
-  exit(1)
-end
-
-Dir.chdir File.dirname(File.expand_path(formula))
-
-if ARGV.include? 'clean'
-  FileUtils.rm_rf %w[ tmp-build tmp-install ], :verbose => true
-  exit
-end
-
-$:.unshift File.expand_path('../../lib', __FILE__)
-require 'debian_formula'
-
-Object.__send__ :remove_const, :HOMEBREW_CACHE
-HOMEBREW_WORKDIR = Pathname.new(Dir.pwd)
-HOMEBREW_CACHE = HOMEBREW_WORKDIR+'src'
-FileUtils.mkdir_p(HOMEBREW_CACHE)
-
-$:.unshift File.expand_path('.')
-load formula
-
-klass = File.read(formula)[/class (\w+)/, 1]
-eval(klass).package!
+require 'brew2deb'
 
+Brew2Deb::CLI.run

brew2deb.gemspec

@@ -0,0 +1,20 @@
+require 'date'
+
+Gem::Specification.new do |s|
+  s.name    = 'brew2deb'
+  s.version = '0.0.0'
+  s.date    = Date.today.to_s
+
+  s.summary = "homebrew + fpm = debian packages"
+  s.description = s.summary
+
+  s.authors  = ['Aman Gupta']
+  s.email    = 'aman@tmm1.net'
+  s.homepage = 'http://github.com/tmm1/brew2deb'
+
+  s.files = Dir['lib/**/*']
+  s.bindir = 'bin'
+  s.default_executable = 'bin/brew2deb'
+
+  s.add_dependency 'fpm'
+end

fpm/lib/fpm/builder.rb

@@ -203,7 +203,7 @@ def generate_md5sums
   def checksum(paths)
     paths.collect do |path|
       next if !File.exists?(path)
-      %x{find #{path} -type f -printf %P\\\\0 | xargs -0 md5sum}.split("\n")
+      %x{gfind #{path} -type f -printf %P\\\\0 | xargs -0 md5sum}.split("\n")
     end.flatten
   end # def checksum
 end

fpm/lib/fpm/source.rb

@@ -129,7 +129,7 @@ def tar(output, paths, chdir=".")
 
     files_tar = [ tar_cmd ] \
                 + excludes \
-                + [ "--owner=root", "--group=root", "-rf", output ] \
+                + [ "--owner=root", "-rf", output ] \
                 + paths
     ::Dir.chdir(chdir) do
       system(*files_tar)
@@ -139,7 +139,7 @@ def tar(output, paths, chdir=".")
   def tar_cmd
     # Rely on gnu tar for solaris.
     case %x{uname -s}.chomp
-    when "SunOS"
+    when "SunOS", "Darwin"
       return "gtar"
     else
       return "tar"

lib/brew2deb.rb

@@ -0,0 +1,52 @@
+require 'fileutils'
+require 'optparse'
+require 'ostruct'
+require 'tempfile'
+
+require 'fpm'
+require "fpm/program"
+
+module Brew2Deb
+  def self.clean(env)
+    [env.build_dir, env.install_dir].each do |dir|
+      FileUtils.rm_rf dir, :verbose => env.verbose
+    end
+  end
+
+  def self.build(env)
+    load_hacks!(env)
+
+    formula = load_formula(env)
+
+    formula.package!(env)
+  end
+
+  def self.load_hacks!(env)
+    load_homebrew(env)
+    load_extensions
+  end
+
+  def self.load_homebrew(env)
+    Kernel.eval("::HOMEBREW_WORKDIR = Pathname.new('#{env.base_dir}')")
+    Kernel.eval("::HOMEBREW_CACHE = Pathname.new('#{env.cache_dir}')")
+
+    $:.unshift(env.homebrew_library_dir)
+    require 'global'
+    require 'formula'
+  end
+
+  def self.load_extensions
+    require 'brew2deb/ext/string'
+    require 'brew2deb/ext/formula'
+    require 'brew2deb/ext/debian_formula'
+    require 'brew2deb/ext/debian_source_formula'
+  end
+
+  def self.load_formula(env)
+    load env.formula
+    eval(File.read(env.formula)[/class (\w+)/, 1])
+  end
+end
+
+require 'brew2deb/cli'
+require 'brew2deb/env'

lib/brew2deb/cli.rb

@@ -0,0 +1,72 @@
+module Brew2Deb
+  module CLI
+    def self.run(argv = ARGV)
+      options = {}
+
+      if argv.empty?
+        options[:formula] = 'formula.rb'
+      elsif argv.first !~ /^-/
+        options[:formula] = argv.shift
+      end
+
+      parse(options, argv)
+
+      env = Env.new(options)
+      Brew2Deb.send(env.action, env)
+    end
+
+    def self.parse(options, argv)
+      optparse = OptionParser.new do |opts|
+        opts.on('-a', '--architecture', 'i386 or amd64') do |arch|
+          options[:architecture] = arch
+        end
+
+        opts.on('-b', '--build', 'Build the formula (DEFAULT)') do
+          options[:action] = :build
+        end
+
+        opts.on('-c', '--clean', 'Clean the package.') do
+          options[:action] = :clean
+        end
+
+        opts.on('-d', '--dir DIR', 'Working directory. Defaults to pwd.') do |dir|
+          options[:base_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-e', '--cache-dir DIR', 'Cache directory. Defaults to pwd/tmp-cache.') do |dir|
+          options[:cache_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-f', '--formula FILE', 'The homebrew formula file.') do |file|
+          options[:formula] = file
+        end
+
+        opts.on('-i', '--install-dir DIR', 'Build directory. Defaults to pwd/tmp-install.') do |dir|
+          options[:install_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-o', '--homebrew-dir DIR', 'Homebrew installation dir.') do |dir|
+          options[:homebrew_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-p', '--package-dir DIR', 'Package directory. Defaults to pwd/pkg.') do |dir|
+          options[:package_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-u', '--build-dir DIR', 'Build directory. Defaults to pwd/tmp-build.') do |dir|
+          options[:build_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-t', '--output-dir DIR', 'Output directory. Defaults to pwd.') do |dir|
+          options[:output_dir] = Pathname.new(dir)
+        end
+
+        opts.on('-v', '--verbose') do
+          options[:verbose] = true
+        end
+      end
+
+      optparse.parse(argv)
+    end
+  end
+end

lib/brew2deb/env.rb

@@ -0,0 +1,42 @@
+module Brew2Deb
+  class Env < OpenStruct
+    def self.defaults
+      {
+        :action       => :build,
+        :architecture => 'i386',
+        :base_dir     => Pathname.new(Dir.pwd),
+        :homebrew_dir => Pathname.new(File.dirname(__FILE__)) + 'vendor' + 'homebrew',
+      }
+    end
+
+    def self.new(attrs = {})
+      super(defaults.merge(attrs))
+    end
+
+    def build_dir
+      super || begin
+        base_dir + 'tmp-build'
+      end
+    end
+
+    def install_dir
+      super || begin
+        base_dir + 'tmp-install'
+      end
+    end
+
+    def homebrew_library_dir
+      homebrew_dir + 'Library/Homebrew'
+    end
+
+    def package_dir
+      super || begin
+        base_dir + 'pkg'
+      end
+    end
+
+    def output_dir
+      super || base_dir
+    end
+  end
+end