herp derp

offlineimap2mbsync.rb

#!env ruby
# offlineimap --info >| ~/tmp/offlineimap.info.output 2>&1
output = File.join(ENV['HOME'], 'tmp/offlineimap.info.output')
config = File.join(ENV['HOME'], '.offlineimaprc')

def parse_ini(file)
  data = {}
  f = File.open(file, 'r')
  section = "no-section"
  f.each_line do |l|
    l = l.chomp!
    if l[0] == '[' and l[l.length-1] == ']'
      section = l[1..-2]
      data[section] = {}
    elsif l.include? '='
      parts = l.split('=')
      data[section][parts[0].strip] = parts[1].strip
    end
  end
  f.close
  data
end

def parse_output(file)
  data = {}
  f = File.open(file, 'r')

  repository = "no-repo"
  folderlist_started = false

  f.each_line do |l|
    l.chomp!
    case l
    when /^Remote repository/
      repository = l.gsub(/^.*'(.*)':.*$/, '\1')
      data[repository] = []
    when /^Folderlist:/
      folderlist_started = true
    when ''
      folderlist_started = false if folderlist_started
    when /^.* -> .*$/
      if folderlist_started
        data[repository].push l.split(' -> ').map(&:strip)
      end
    end
  end
  f.close
  data
end

def print_store(name, repo)
  ret = {}

  repo.each do |(key,val)|
    case key
    when 'type'
      if val == 'Maildir'
        ret['MaildirStore'] = name
      elsif val == 'IMAP'
        ret['IMAPStore'] = name
        ret['SSLVersions'] = 'TLSv1.2'
        ret['SSLType'] = 'IMAPS'
      elsif val == 'Gmail'
        ret['IMAPStore'] = name
        ret['Host'] = 'imap.gmail.com'
        ret['SSLType'] = 'IMAPS'
        ret['SSLVersions'] = 'TLSv1.2'
      end
    when 'localfolders'
      ret['Path'] = val[-1] == '/' ? val : val+'/'
    when 'remotehost'
      ret['Host'] = val
    when 'remoteuser'
      ret['User'] = val
    when 'remoteport'
      ret['Port'] = val
    when 'auth_mechanisms'
      ret['AuthMechs'] = val
    when 'remotepasseval'
      ret['PassCmd'] = val.gsub(/^.*\("(.*)"\).*$/,'"pass \1"')
    end
  end

  ret.map{ |(k,v)| "#{k} #{v}" }#.join("\n") + "\n\n"
end

def print_mbsyncrc(config, folders)
  lines = []
  config.keys.select {|k| k.start_with? 'Account'}.each do |acc|
    acckey = acc.gsub(/^Account /,'').gsub('@','-')

    lines << "# {{{ #{acckey}"
    ["local", "remote"].each do |repotype|
      repokey = config[acc]["#{repotype}repository"]
      repodata = config["Repository #{repokey}"]
      lines << print_store(repokey, repodata)
      lines << ''
    end

    channels = []
    folders[config[acc]["remoterepository"]].each do |m,s|
      channame = "#{acckey}-#{s}"
      channels << channame
      lines << "Channel #{channame}"
      lines << "Master :#{config[acc]['remoterepository']}:\"#{m}\""
      lines << "Slave :#{config[acc]['localrepository']}:\"#{s}\""
      lines << 'Sync All'
      lines << ''
    end
    lines << ''

    lines << "Group #{acckey}"
    lines << "Channels #{channels.join(' ')}"
    lines << ''
    lines << "# }}}"
    lines << ''
  end

  puts lines.join("\n")
end

configdata = parse_ini(config)
folderdata = parse_output(output)

print_mbsyncrc(configdata, folderdata)