hamledit PATH_TO_XML_FILE: Converts XML to haml, loads it with `subl -w`, and then converts it back to xml in-place.

hamledit

#!/usr/bin/env ruby
# Usage: hamledit [-v] PATH_TO_XML_FILE
# -v means "view only"
#
# Converts XML to haml, loads it with `subl -w`, and then converts it back to xml in-place.

require 'fileutils'
require 'posix-spawn'

orig = ARGV.last
viewonly = (ARGV.first == '-v')

unless viewonly
  backup = orig + ".backup.#{Time.now.to_f}.xml"
  FileUtils.cp orig, backup
end

# convert to HAML
tmp = orig + '.tmp.haml'
pid = POSIX::Spawn.spawn('html2haml', '--html-attributes', '--unix-newlines', '-x', orig, :out => tmp)
Process.waitpid pid
raise "died converting to haml" unless $?.success?

# edit in subl -w
pid = POSIX::Spawn.spawn('subl', '-w', tmp)
Process.waitpid pid

unless viewonly
  # write back out to the original file (dangerous!)
  pid = POSIX::Spawn.spawn('haml', '--double-quote-attributes', '--format', 'xhtml', '--unix-newlines', tmp, :out => orig)
  Process.waitpid pid
end

FileUtils.rm tmp