Increments the trac ticket numbers in the svn log and replaces "ticket:" with # for Redmine multi project

svn_log_increment_redmine.rb

@repo = "file:///path_to_svn_repo"
#How much each ticket should be incremented by
@increment_ticket = 100
#If the incremented ticket is above or below these numbers it will not increment
#Useful if you have a svn repository which refers to tickets in another project
@ticket_min = 0
@ticket_max = 100000

class SvnEntry
  attr_accessor :revision, :log
  def initialize
    @log = String.new
    @revision = String.new
  end
end


def get_revisions
  mode = :none
  svn_entry = nil
  svn_out = `svn log #{@repo}`
  svn_out.each do |line|
    if line =~ /^\-+\-$/
      yield svn_entry if svn_entry
      mode = :new_revision
      next
    end

    if mode == :new_revision
      svn_entry = SvnEntry.new
      svn_entry.revision = line.scan(/^r(\d+)/)[0][0]
      mode = :read_commit_info_skip_blank
      next
    end

    if mode == :read_commit_info_skip_blank
      mode = :read_commit_info
      next
    end

    if mode == :read_commit_info
      svn_entry.log << line
      next
    end
  end
end

def get_incremented_ticket(ticket_no)
  ticket_no = ticket_no.to_i
  incremented_ticket_no = ticket_no + @increment_ticket
  case incremented_ticket_no
  when @ticket_min..@ticket_max
    ticket_no = incremented_ticket_no
  end
  
  "#" + ticket_no.to_s
end

get_revisions do |r|
  if r.log =~ /#\d+/ || r.log =~ /ticket:\d+/
    puts r.log
    puts "~~~~~~~~~~~~~~~~~~~~"
    r.log = r.log.gsub(/#(\d+)/) { get_incremented_ticket $1 }
    r.log = r.log.gsub(/ticket:(\d+)/) { get_incremented_ticket $1 }
    puts r.log
    puts "----------------"
    logfile = File.new("outfile", "w")
    logfile.syswrite(r.log)
    command = `svn propset --revprop -r #{r.revision} svn:log -F outfile #{@repo}`
    puts command
    logfile.close
  end
end