SVNHelper.rb

SVN_FILE = ".svn/entries"
class SVNHelper
  
 attr_accessor :version, :date
 
 def initialize(version, date)
   @version  = version 
   @date     = date
 end
 alias rev version 

 def self.version(root)
   file = File.join(root, SVN_FILE)  
   raise "Specified SVN file [#{file}] does not exist, can not get the revision information."  unless File.exists?(file)
  
  #third line is the revision name, ninth line is the last modified date.
   begin
     lines   = IO.readlines(file)
     version = self.new(lines[3].chomp,         
                        lines[9].chomp.to_time)
   rescue
    #in case of a change of SVN kernel, just return 'no_svn' and we will look back here.
    version = self.new('NO_SVN',Date.today)     
   end 
   version
   
 end
 
 def to_s
   rev
 end
 def rev_with_date
   %{#{version} [#{date.to_time.strftime("%y%m%d.%H%M%S")}]}
 end
 
end