#!/usr/bin/env ruby
#-----------------------------------------------------------------------
#  call:     merge_files.rb fn1 fn2 fn3
#
#  assume that fn1 and fn2 have the same structure:
#  4 columns: run_number, than 3 integers
#  merge them into a single file leaving run number only once
#
# used by the lost run sections monitor
#-----------------------------------------------------------------------
require 'find'
require 'fileutils'

def usage
  puts "usage: merge_files fn1 fn2 fn3"
  exit(-1)
end

usage if ARGV.length < 2

fn1     = ARGV[0]
fn2     = ARGV[1]
fn3     = ARGV[2]
rc          = 0;
#-----------------------------------------------------------------------
#  start 
#-----------------------------------------------------------------------
f1          = File.open(fn1) ; 
output_file = File.new(fn3,"w");
rmax     = -1



f1.each_line { |line1| 

    rn1   = line1.split()[0].to_i;
    rs1_1 = line1.split()[1].to_i;
    rs2_1 = line1.split()[2].to_i;
    n1_1  = line1.split()[3].to_i;
    n2_1  = line1.split()[4].to_i;

   ok = 0

   f2          = File.open(fn2) ; 
   f2.each_line { |line2| 

     rn2   = line2.split()[0].to_i;
     rs1_2 = line2.split()[1].to_i;
     rs2_2 = line2.split()[2].to_i;
     n1_2  = line2.split()[3].to_i;
     n2_2  = line2.split()[4].to_i;

     if (rn1 == rn2) 

       printf "%8i %8i %8i %8i %8i %8i %8i %8i %8i\n", 
              rn1, rs1_1, rs2_1, n1_1, n2_1,
                   rs1_2, rs2_2, n1_2, n2_2

       output_file.printf ("%8i %8i %8i %8i %8i %8i %8i %8i %8i\n", 
	                    rn1, rs1_1, rs2_1, n1_1, n2_1,
        	                 rs1_2, rs2_2, n1_2, n2_2);
       ok = 1
       break
     end
   }
   f2.close;

   if (ok == 0) 
       printf "%8i %8i %8i %8i %8i %8i %8i %8i %8i \n", 
	rn1, rs1_1, rs2_1, n1_1, n2_1, -1, -1, -1, -1

       output_file.printf("%8i %8i %8i %8i %8i %8i %8i %8i %8i \n", 
	rn1, rs1_1, rs2_1, n1_1, n2_1, -1, -1, -1, -1)

   end
}

#-----------------------------------------------------------------------
#  done
#-----------------------------------------------------------------------
  puts "merge_files.rb: exit with rc=#{rc}"
exit(rc)