#!/usr/bin/perl
#
#*******************************************************************************
#
#Copyright (c) 2009, Perforce Software, Inc.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 
# 1.  Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 
# 2.  Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL PERFORCE SOFTWARE, INC. BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#*******************************************************************************
#Author: Stephen Moon
#Date: June 18, 2010
#Summary: You first need to generate the labels and 
#         save it to a file to use as an argument
#         for this script.
#
#         That need might be obviated in future because
#         I wrote in this matter because I had a misunderstanding
#         that a checkpoint contains "@dv@" records which
#         it does not.
#
#         To sum it up, this script was created to change
#         a depot name of all labels in a depot.  This is 
#         needed if you are p4duplicating the original
#         depot.  I might rewrite this in future.
#*******************************************************************************

use warnings;
use strict;
use Fatal qw/ open /;

my $debug = 0; #$debug = 1 turns on debugging

my $argc = @ARGV;
my $opcode = "";

if ($argc != 4) {
   die "Usage: getRecordForLabel.pl <checkpoint> <labelNames> <old_depot> <new_depot>\n" .
       "e.g. getRecordForLabel.pl chkpt labelNames.txt depot depot_2\n";
}

my $label = $ARGV[1];
my $odepot = $ARGV[2];
my $ndepot = $ARGV[3];

open(INCHKPT,"$ARGV[0]");
open(OUTCHKPT,">$ARGV[0].new");

while(<INCHKPT>) {
   if(/^\@pv\@ \d+ (\@db.view\@|\@db.label\@) .*$/) {
      $opcode = $_;
      $opcode = &processLabels(\$opcode,\$label,\$odepot,\$ndepot);
      $_ = $opcode . "\n"; 
   }
   print OUTCHKPT "$_";
}

close(INCHKPT);
close(OUTCHKPT);

sub processLabels() {

my $opcodeRef = shift;
my $labelRef = shift;
my $odepotRef = shift;
my $ndepotRef = shift;

open(INLABEL,"$$labelRef");

if($debug == 1) {
   print "Before Opcode Process: $$opcodeRef, $$labelRef, $$odepotRef, $$ndepotRef \n";
}

while(<INLABEL>) {
   
   chomp;
   if($$opcodeRef =~ /^\@pv\@ \d+ (\@db.view\@|\@db.label\@) \@$_\@ .*$/) {
      
      if($debug == 1) {
         print "Process opcode for each label: \n" . 
               "$$opcodeRef, $$odepotRef, $$ndepotRef\n";
      }
      $opcodeRef = &replaceDepot($opcodeRef,$odepotRef,$ndepotRef);
   
   }
}
close(INLABEL);
return $$opcodeRef;

} 

sub replaceDepot() {

my $opcodeRef = shift;
my $odepotRef = shift;
my $ndepotRef = shift;

   $$opcodeRef =~ s#//$$odepotRef/#//$$ndepotRef/#g;

   if($debug == 1) {
      print "After fix: $$opcodeRef\n";
   }

return $opcodeRef;

}