Tool to check and fix git-remote-hg marks

git-marks-check

#!/usr/bin/env ruby

require 'json'

$fix = false
$verbose = false
$git_marks = {}
$r_marks = {}
$note_marks = {}
$mode = 'hg'

# Parse arguments
ARGV.delete_if do |cur|
  next false if cur[0] != '-'
  case cur
  when /^-f$/, /^--fix$/
    $fix = true
    true
  when /^-v$/, /^--verbose$/
    $verbose = true
    true
  when /^-m(.+)$/, /^--mode=(.+)$/
    $mode = $1
    true
  end
end

$remote = ARGV[0] || 'origin'

$dir = File.join('.git', $mode, $remote)
$git_file = File.join($dir, 'marks-git')
$r_file = File.join($dir, 'marks-' + $mode)

# TODO
$r_file = File.join($dir, 'marks-int') if $mode == 'bzr'

# Get git marks
File.open($git_file).each do |l|
  if l =~ /:(\d+) (\h+)$/
    $git_marks[$1.to_i] = $2
  end
end

# Remove non commit objects
File.popen(%w[git cat-file --batch-check], 'r+') do |p|
  $git_marks.each do |mark,id|
    p.write(id + "\n")
    if p.readline =~ /(\h+) (\w+)(?: (\d+))?/
      type = $2
      $git_marks.delete(mark) unless type == 'commit'
    end
  end
end

# Remove notes
File.popen(%W[git rev-list refs/notes/#{$mode}], 'r', :err => File::NULL) do |p|
  p.each do |l|
    mark, id = $git_marks.find { |_,x| x == l.chomp }
    if mark
      $git_marks.delete(mark)
      $note_marks[mark] = id
    end
  end
end

# Get remote marks
r_data = JSON.parse(File.read($r_file))
$r_marks = r_data['marks'].invert

r_missing = $git_marks.reject { |mark,id| $r_marks[mark] }
git_missing = $r_marks.reject { |mark,id| $git_marks[mark] }

if $verbose
  r_missing.each do |mark,id|
    puts "Missing %s (%d) from #{$mode}" % [id, mark]
  end
  git_missing.each do |mark,id|
    puts "Missing %s (%d) from git" % [id, mark]
  end
end

if $fix
  # Fix remote marks
  r_data['marks'].delete_if { |mark,id| git_missing.has_key?(id) }
  File.write($r_file, r_data.to_json)

  # Fix git marks
  File.open($git_file, 'w') do |f|
    $git_marks.each do |mark,id|
      next if r_missing.has_key?(mark)
      f.puts ':%d %s' % [mark, id]
    end
    $note_marks.each do |mark,id|
      f.puts ':%d %s' % [mark, id]
    end
  end
end

if r_missing.empty? and git_missing.empty?
  puts 'Everything OK'
else
  puts 'Issues detected'
  exit 1
end

This is awesome! Thanks