Class: Piston::Commands::Diff

Inherits:
Piston::Command show all
Defined in:
lib/piston/commands/diff.rb

Instance Attribute Summary

Attributes inherited from Piston::Command

#args, #dry_run, #force, #lock, #logging_stream, #quiet, #recursive, #revision, #show_updates, #verbose

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Piston::Command

#find_targets, #initialize, #skip, #svn

Constructor Details

This class inherits a constructor from Piston::Command

Class Method Details

.detailed_help ⇒ Object 



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# File 'lib/piston/commands/diff.rb', line 43

def self.detailed_help
  <<EOF
usage: diff [DIR [...]]

  This operation has the effect of producing a diff between the pristine upstream
  (at the last updated revision) and your local version.  In other words, it
  gives you the changes you have made in your repository that have not been
  incorporated upstream.
EOF
end

.help ⇒ Object 



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# File 'lib/piston/commands/diff.rb', line 39

def self.help
  "Shows the differences between the local repository and the pristine upstream"
end

Instance Method Details

#diff(dir) ⇒ Object 



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# File 'lib/piston/commands/diff.rb', line 14

def diff(dir)
  return unless File.directory?(dir)
  logging_stream.puts "Processing '#{dir}'..."
  repos = svn(:propget, Piston::ROOT, dir).chomp
  uuid = svn(:propget, Piston::UUID, dir).chomp
  remote_revision = svn(:propget, Piston::REMOTE_REV, dir).chomp.to_i

  logging_stream.puts "  Fetching remote repository's latest revision and UUID"
  info = YAML::load(svn(:info, repos))
  return skip(dir, "Repository UUID changed\n  Expected #{uuid}\n  Found    #{info['Repository UUID']}\n  Repository: #{repos}") unless uuid == info['Repository UUID']

  logging_stream.puts "  Checking out repository at revision #{remote_revision}"
  svn :checkout, '--ignore-externals', '--quiet', '--revision', remote_revision, repos, dir.tmp

  puts run_diff(dir.tmp, dir)

  logging_stream.puts "  Removing temporary files / folders"
  FileUtils.rm_rf dir.tmp

end

#run ⇒ Object 



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# File 'lib/piston/commands/diff.rb', line 8

def run
  (args.empty? ? find_targets : args).each do |dir|
    diff dir
  end
end

#run_diff(dir1, dir2) ⇒ Object 



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# File 'lib/piston/commands/diff.rb', line 35

def run_diff(dir1, dir2)
  `diff -urN --exclude=.svn #{dir1} #{dir2}`
end