#!/usr/bin/perl
# a lame line-by-line file comparision done for Rav ;->
#
#==========================================#
# Author: Marius Feraru aka AltBlue        #
# E-Mail: altblue@tuiasi.ro                #
# URL   : http://www.cs.tuiasi.ro/altblue/ #
#         http://bofh.mednet.ro/altblue/   #
#==========================================#

$file1 = $ARGV[0];
$file2 = $ARGV[1];

open(F,$file1) || die "cannot open '$file1': $!\n";
@file1 = <F>;
close(F);

open(F,$file2) || die "cannot open '$file2': $!\n";
@file2 = <F>;
close(F);

$ok1 = 1;
$ok2 = 1;

foreach(@file1) {
  unless(ab_isin($_,\@file2)) {
     print "bleah. '$_' is not a line in '$file2'.\n";
     $ok1 = 0;
  }
}

foreach(@file2) {
  unless(ab_isin($_,\@file1)) {
     print "bleah. '$_' is not a line in '$file1'.\n";
     $ok2 = 0;
  }
}


if($ok1 && $ok2) {
     print "'$file1' and '$file2' contain exactly the same lines.\n";
} elsif($ok1) {
     print "'$file1' is included in '$file2'.\n";
} elsif($ok2) {
     print "'$file2' is included in '$file1'.\n";
} else {
     print "'$file1' and '$file2' are different.\n";
}

#=========================================================================
# usage ab_isin($var,\@array)
# - returns 1 if $var is a member of @array, undef unless.
#=========
sub ab_isin {
     local ($v,@m)=($_[0],@{$_[1]});
     foreach(@m){
          return 1 if("$v" eq "$_");
     }
}