# This module contains all code for checking API versions for the 
# VSS to Perforce converter.
#
# $Id: //public/perforce/utils/vsstop4/main/convert.pm#16 $
#

require 5.0;

package utils;   # This package

use Exporter;

use vars qw(@ISA @EXPORT);
use convert;

@ISA = qw(Exporter);
@EXPORT = qw(p4api p4exec p4errors_get p4errors_print log_ss_version);

# Checks 
sub p4api
{
  my $version_reqd = "3.6001";
  my $usage = "\nP4Perl module (P4) is required for the converter to run.

Install P4Perl from http://public.perforce.com//guest/tony_smith/perforce/API/Perl/index.html.

Please use version $version_reqd (other versions not tested and unlikely to work).
Just double-click on Windows installer and run it (no real need to download and save). E.g.:

http://public.perforce.com/guest/tony_smith/perforce/API/Perl/released/p4perl56-setup-$version_reqd.exe
  or
http://public.perforce.com/guest/tony_smith/perforce/API/Perl/released/p4perl58-setup-$version_reqd.exe

as appropriate.
\n";

  # Check that P4 Module is installed
  eval{require P4; import P4;};
  if ($@) {
    print $usage;
    exit(1);
  }

  convert::log("P4Perl version: $P4::VERSION\n");
  if ($P4::VERSION !~ /\s*$version_reqd\s*$/) {
    print $usage;
    print "****** Wrong P4Perl version installed - $P4::VERSION is what you have - please uninstall and install $version_reqd instead!";
    exit(1);
  }
  
  my $p4 = new P4;
  $p4->SetApiLevel( 57 ); # Lock to 2005.1 format
  $p4->SetProg("vsstop4");
  return $p4;
}

sub p4exec
{
  my ($p4, $cmd, $errorexit) = @_;
  $errorexit = 0 if (!defined($errorexit));
  my @result = $p4->Run(split(' ', $cmd));
  my $result = join("\n", @result);
  p4errors_print($p4, $cmd, $errorexit);
  return $result;
}

sub p4errors_print
{
  my ($p4, $msg, $errorexit) = @_;
  $errorexit = 0 if (!defined($errorexit));
  if ($p4->ErrorCount()) {
    my $output = "**p4errors - $msg:\n";
    print $output;
    convert::log($output);
    foreach my $e ($p4->Errors()){
      print "$e\n" if $errorexit;;
      convert::log("$e\n");
    }
    exit(4) if $errorexit;
  }
}

sub p4errors_get
{
  my @result;
  if ($p4->ErrorCount()) {
    foreach my $e ($p4->Errors()){
      push @result, "$e\n";
    }
  }
  return join("\n", @result);
}

sub log_ss_version
{
  my $output = convert::run("ss about $convert::ss_options");
  convert::log($output);
  convert::sum_log($output);
}

1;