#! /usr/bin/perl
#
# NAME: templatebranch.pl
#
# DESC: This script uses original branchspec as a template
# to make a new branchspec
#
# Command line equivalent
# p4 branch -o OLD | sed '/^Branch:/ c\Branch: NEW' | p4 branch -i
#

$branchold = shift ARGV;	#The original branchspec template.
$user   = shift ARGV;		#The current user.
$server = shift ARGV;           #ip_address:port of your Perforce server.
$branchnew = shift ARGV;	#The new branchspec name made from template.

$p4     = "p4";		# Absolute path to the p4 cli program.

if ($branchold eq $branchnew)
{
  print "\nNew branchspec name must be unique and not already exist.\n\nSelect a branchspec and try again.\n";
  exit 1;
}

$cmd = "\"$p4\" -u $user -p $server branch -o \"$branchold\" | sed '/^Branch:/ c\Branch: \"$branchnew\"' | p4 branch -i |";

open NEWBRNCH, $cmd
  or die "Cannot run template branchspec command.\n\n";

$count = 0;

while (<NEWBRNCH>)
{
  $count++;  
}  

if($count ne 0) { print "\nNew branchspec $branchnew created.\n\nBranch created from $branchold.\n";   }
if($count eq 0) { print "\nNo new branchspec created from template.\n"; }
 
exit 0;