convert.pl #1

#!/usr/bin/perl -w
#
# Visual SourceSafe to Perforce converter, top level wrapper (calls all other scripts)
#
# Copyright 1998 Perforce Software.  All rights reserved.
# Written by James Strickland, April 1998
# Maintained by Robert Cowham, since 2000
#
# $Id: //guest/hari_krishna_dara/perforce/utils/vsstop4/main/convert.pl#1 $
#

require 5.0;
use strict;
use lib '.';
use convert;

$| = 1; # don't buffer output

# Check that P4 Module is installed
eval{require P4; import P4;};
if ($@) {
  print "\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.

Use the Current version (for Perl 5.6 or 5.8 as appropriate), and 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/current/p4perl56-setup.exe or
http://public.perforce.com/guest/tony_smith/perforce/API/Perl/current/p4perl58-setup.exe
\n";

  exit(1);
}

# Check for parameter to avoid asking questions
my $confirm = shift(@ARGV);
$confirm = "" if (!defined($confirm));

unlink("logfile.log") if ($convert::debug_level>0); # nuke the logfile, if any

# check that p4 is operational, warn if version does not support -f
print "Running p4 info.\n";
my $p4info=convert::p4run(" info");

# note: p4 info prints errors to stderr, so we deduce an error from the lack
# of output saying anything about the server
if( $p4info !~ m@server@si) {
  print "\np4 info returned an error which must be fixed before proceeding.
Check the installation section of the Perforce manual.
Most likely you haven't started a Perforce server or you haven't set P4PORT
to point to the server.

You can obtain Perforce documentation from http://www.perforce.com\n\n";
  print "Here's what p4 info returned:\n$p4info" if($p4info);
  exit(1);
}

if( $p4info =~ m@\nServer version:\s+[^\s]+/([0-9]+) @s) {
  my $change_number = $1;
  my $magic_number = 4761; # first release of 97.3
  if( $change_number < $magic_number ) {
    print "Detected Perforce server version with change number $change_number.

The VSS converter requires a 97.3 or later server.  You can download Perforce
from http://www.perforce.com/\n";
    exit(2);
  }
} else { # Server version line not recognized
  print "The Perforce server version was not detected - either you have a really
old version (you can get the latest version from http://www.perforce.com)
or the format of the output of p4 info has changed and no one updated
this script to match (in which case, we'd appreciate it if you let us know
- send email to support\@perforce.com).

The VSS converter requires a 97.3 or later server.  You can download Perforce
from http://www.perforce.com/
";

  if ($confirm !~ /\-[yY]/)
  {
     print "Do you wish to proceed with your existing server? (y/n) ";
     exit(3) if(<STDIN> !~ /y/);
  }
}

# check no opened files...
print "Checking for no opened files.\n";
if(convert::p4run(" opened")) {
  print "************************** ERROR
  You have a variety of opened files - conversion cannot proceed.
  Please revert them and try again:
";

    print convert::p4run(" opened");
    exit(4);
}

# check that the depot is empty
print "Checking that the depot is empty.\n";
if(convert::p4run(" changes -m 1") || convert::p4run(" labels")) {
  my $port = $p4info;
  $port =~ s@.*\nServer address:\s*(\S+).*@$1@s;
  print "The Perforce depot stored by the server at '$port' is not empty!
Running this import process will import changes with earlier timestamps than
existing changes in the depot. Be careful!!
";

  if ($confirm !~ /-[yY]/)
  {
     print "Are you sure you want to proceed? ";
     exit(4) if(<STDIN> !~ /y/);
  }
}



# Check if we are being asked to ignore changes - dangerous!!
if($convert::start_time != 0) {
  print "************* WARNING
You have specified a start_time before which to ignore changelists.
This is potentially dangerous because if you have not correctly specified the
time stamp, you will get duplicate changelists!
";

    print "Are you sure you want to proceed? ";
    exit(4) if(<STDIN> !~ /y/);
}

# Check that the user has superuser or admin protections

if(!convert::p4run("protect -o")) {
  print "You do not have superuser permissions for this Perforce repository.
The converter updates the date and time on imported changelists which requires
superuser or administrator permissions.
";

    print "Are you sure you want to proceed? ";
    exit(4) if(<STDIN> !~ /y/);
}

# Timestamp
print "Conversion started             " . scalar(localtime()) . "\n";

# set up user name and client

$ENV{P4PORT}   = $convert::p4port;

$ENV{P4USER}   = $convert::p4user;

$ENV{P4CLIENT} = $convert::p4client;
print "\nUsing port/client/user '$ENV{P4PORT}/$ENV{P4CLIENT}/$ENV{P4USER}'.\n\n";

my $client_view = "//$convert::depot/$convert::depot_root/... //$ENV{P4CLIENT}/$convert::depot_root/...\n";

print "...creating/updating client $ENV{P4CLIENT} with:\n";
print "      root $convert::client_root.\n";
print "      view $client_view\n";

my $form = convert::p4run(" client -o $ENV{P4CLIENT}");
# Update the root and view
$form =~ s@(\nRoot:\s*)\s+\S[^\n]*\n@$1 $convert::client_root@s;
$form =~ s@(\nView:\s*)\n\s+.*\n$@$1\n\t$client_view@s;
convert::p4run(" client -i", $form);

if ($convert::bypass_metadata) {
  # If a bypass is requested, verify that the files are there.
  $convert::bypass_metadata =
   -f "$convert::metadata_dir/files" &&
    -f "$convert::metadata_dir/labels_summary" &&
     -f "$convert::metadata_dir/changes";
}

if ($convert::bypass_metadata) {
  print "BYPASSING the re-creation of the metadata/ files.\n";
} else {
  print "Extracting metadata...         " . scalar(localtime()) . "\n";
  print "...from all VSS projects at and below $convert::root\n";
  runcmd("perl readhist.pl");

  # Sort the metadata
  print "Sorting the metadata.          " . scalar(localtime()) . "\n";
  runcmd("perl sortmeta.pl");

  # Improve the metadata - group changes, etc.
  print "Improving the metadata.        " . scalar(localtime()) . "\n";
  runcmd("perl improve.pl");
}

# And now, what you've all been waiting for..
print "Creating the Perforce depot.   " . scalar(localtime()) . "\n";

runcmd("perl mkdepot.pl");

# Some post-processing
print "Sorting the mapping file.      " . scalar(localtime()) . "\n";
runcmd("perl sortmap.pl");

# Verification step
if ($convert::perform_verify) {
  print "\nVerifying the result.          " . scalar(localtime()) . "\n";
  runcmd("perl verify.pl");
}

# Timestamp
print "Conversion finished            " . scalar(localtime()) . "\n";

sub runcmd
{
    my $cmd = shift;

    my $result = system($cmd);
    if ($result) {
        die "***** Failed to run command: $cmd\n";
    }
}
#eof