dochanges #2

eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
  & eval 'exec perl -S $0 $argv:q'
  if 0;
#  THE PRECEEDING STUFF EXECS perl via $PATH
# -*-Fundamental-*-

require 5.000;

use bytes;

my $s = "\001";

# Schema stuff
#
$Act_add	= 0;
$Act_edit	= 1;
$Act_delete	= 2;
$Act_branch	= 3;
$Act_integ	= 4;
$Act_import	= 5;

#  $Id: //guest/robert_cowham/perforce/utils/cvs2p4/bin/dochanges#2 $
#
#  Richard Geiger
#

sub dirname
{
  local($dir) = @_;
  $dir =~ s%^$%.%; $dir = "$dir/";
  if ($dir =~ m%^/[^/]*//*$%) { return "/"; }
  if ($dir =~ m%^.*[^/]//*[^/][^/]*//*$%)
  { $dir =~ s%^(.*[^/])//*[^/][^/]*//*$%$1%; { return $dir; } }
  return ".";
}

use Carp; # ...or flounder. (This will fail unless 'perl' is a perl5!)
$| = 1;

($Myname = $0) =~ s%^.*/%%;
$Mydir = &dirname($0);
$Here = `/bin/pwd`; chop $Here;
if ($Mydir ne ".") { chdir "$Mydir" || die "$Myname: can't chdir \"$Mydir\": $!"; }
chdir ".." || die "$Myname: can't chdir \"..\": $!";
$Mydir = `/bin/pwd`; chop $Mydir;
chdir $Here || die "$Myname: can't chdir \"$Here\": $!";

#obs#use IPC::Open2;
require "$Mydir/lib/util.pl";

$Usage = <<LIT;
$Myname: usage: $Myname [-v <n>] [-s <change>] [-c] <conversiondir>
LIT


sub usage
{
  print STDERR $Usage;
  exit 1;
}


sub help
{
  print STDERR <<LIT;
$Usage

  -v <n>       set verbosity level [0]
  -s <change>  start numbering generated changes at <change>
  -c           copy (rather than link) the file archive

$Myname uses the outputs of the genmetadata and genchanges stages of
cvs2p4 and creates a Perforce metadatabase describing the converted
changes. It also links (or, optionally, copies) the RCS archives being
converted into the file archive tree under $P4ROOT.

LIT
  exit 1;
}


sub path
{
  my($prefix, $file_dir, $file_name) = @_;
  my($path);
  $path = "$prefix";
  if ($file_dir) { $path .= "$file_dir/"; }
  $path .= "$file_name";
  return $path;
}


sub is_binary_ext
{
  my ($path) = @_;
  my ($filename) = $path;
  $filename =~ s/^.*\///;
  my $fileext;
  $filename =~ m/\.([^\.]+)$/;
  $fileext = $1;
  $fileext =~ tr/A-Z/a-z/;
  if (defined($EXT{$fileext})) { return 1; }
  return 0;
}

#if (&is_binary_ext($ARGV[0]))
#  { print "BINARY\n"; } else { print "TEXT\n"; }
#exit 1;


#  Determine whether the depot already has this file on this code line.
#  (Used to determine when we need to branch).
#

sub depot_has
{
  my($file) = @_;
  if (defined($DEPOTMAP{$file})) { return ${$DEPOTMAP{$file}}[0]; }
  return 0;
}


sub depot_newrev
{
  my($file, $action) = @_;
  my ($have, $rev);

  if ($action =~ /^(add|branch)$/)
    {
      if (defined($DEPOTMAP{$file}))
        {
          ($have, $rev) = @{$DEPOTMAP{$file}};
	  if ($have)
	    { die "already have $file on add"; }
          $have = 1;
          $rev++;
        }
      else
        {
          $have = 1;
          $rev = 1;
          $DEPOTMAP{$file} = [ ];
        }
    }
  else
    {
      if (! defined($DEPOTMAP{$file}))
        {
          print "$Myname: unmapped \"$file\" on edit/delete.\n";
          exit 1;
        }
      ($have, $rev) = @{$DEPOTMAP{$file}};

      if (! $have)
        {
          print "$Myname: don't already have \"$file\" on edit/delete.\n";
          exit 1;
        }
      if ($action eq "delete")
        { $have = 0; }
      $rev++;
    }
    
  @{$DEPOTMAP{$file}} = ( $have, $rev );

  return $rev;
}


sub genrev
{
  my ($depotfile, $p4rev, $type, $action, $modtime, $lbrfile, $lbrrev, $lbrtype) = @_;
  return "$depotfile$s$p4rev$s$type$s$action$s$modtime$s//$lbrfile$s$lbrrev$s$lbrtype";
}


sub genchange
{
  my ($revs, $ch_time, $msg, $who, $integs) = @_;

  if ($LOGNOTE)
    {
      my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime(time);
      my($ts) = sprintf("%04d/%02d/%02d %02d:%02d:%02d",
                         $year+1900, $mon+1, $mday, $hour, $min, $sec);
      $msg .= "\n[imported from CVS by cvs2p4 at $ts]\n";
    }

  my $smsg = $msg;
  $smsg = substr($smsg, 0, 31);
  $smsg = &atq($smsg);

  print DBMETA "\@pv\@ 0 \@db.change\@ $Change $Change cvs2p4 $who $ch_time 1 $smsg\n";
  
  $msg = &atq($msg);
  print DBMETA "\@pv\@ 0 \@db.desc\@ $Change $msg\n";

  foreach my $rev (@{$revs})
    {
      my ($depotfile, $p4rev, $type, $action, $modtime, $lbrfile, $lbrrev, $lbrtype) = split(/$s/, $rev);

      $depotfile = &atq($depotfile);
      $lbrfile   = &atq($lbrfile);
      $lbrrev    = &atq($lbrrev);
      $zdig      = "00000000000000000000000000000000";

      $depotfile =~ s/\/Attic(\/[^\/]+)$/$1/;

      my $p4depotfile = &p4_esc($depotfile);

      print DBMETA "\@pv\@ 3 \@db.rev\@ $p4depotfile $p4rev $type $action ".
                      "$Change $ch_time $time $zdig $lbrfile $lbrrev $lbrtype\n";
      print DBMETA "\@pv\@ 0 \@db.revcx\@ $Change $p4depotfile $p4rev $action\n";
    }

  foreach my $integ (@{$integs})
    {
      my($tofile, $fromfile, $fromrev) = split(/$s/, $integ);

      $tofile = &atq($tofile);
      $fromfile = &atq($fromfile);

      $tofile =~ s/\/Attic(\/[^\/]+)$/$1/;
      $fromfile =~ s/\/Attic(\/[^\/]+)$/$1/;

      my $p4tofile = &p4_esc($tofile);
      my $p4fromfile = &p4_esc($fromfile);

      print DBMETA "\@pv\@ 0 \@db.integed\@ $tofile $fromfile 0 $fromrev 0 1 2 $Change\n";
      print DBMETA "\@pv\@ 0 \@db.integed\@ $fromfile $tofile 0 1 0 $fromrev 3 $Change\n";
    }

  $Change++;

}

  
sub type_of
{
   my ($rcsfile, $rev, $options) = @_;

   my $binary = 0;

   if ($options =~ /[ob]/ || &is_binary_ext($rcsfile))
     { $binary = 1; }
   elsif ($CHECKBIN)
     {
       if (&s("$CO -q -p$rev '$file' >'$Convdir/rev.tmp'"))
         {
           print "$Myname: \"$CO -p$rev '$file' >'$Convdir/rev.tmp'\" failed.\n";
           exit 1;
         }
       if (-B "$Convdir/rev.tmp") { $binary = 1; }
       unlink "$Convdir/rev.tmp";
     }
       
   my $type = 0;

   #  NOTE: CVS/RCS just doesn't have the notion of Perforce's "text"
   #  vs "ktext" types; in RCS, a file is either "text" (in which
   #  keywords get expanded in one way or another), or "binary", in
   #  which they are left untouched (RCS's concept of "binary". How's a
   #  poor conversion program to cope?! For now, we just treat ALL RCS
   #  "text" files as either "ktext", or ALL as "text". That's controlled
   #  by the $TEXTTYPE configuration setting
   #  
   #    else { $type |= $TEXTTYPE; }
   #  
   #  line, below. If you need your conversion to treat _some_ one
   #  way, and _others_ another way, you'll need to add a mechanism
   #  for determining which to use, hereabouts. - rmg
   #

   if ($binary)         { $type |= 0x0100; } else { $type |= $TEXTTYPE; }
   if ($options =~ /x/) { $type |= 0x0200; }
   return $type;
}


sub rmap
{
  my ($depotrev, $cvsrev, $revinfo) = @_;

  $depotrev =~ s/\/Attic(\/[^\/]+)$/$1/;

  $REVMAP{$depotrev} = $revinfo;
  if ($RREVMAP{$cvsrev}) { $RREVMAP{$cvsrev} .= "\001"; }
  $RREVMAP{$cvsrev} .= "$depotrev";
}

#  Process one "change" from CVS.
#  Called with the set of CVS files/revs to process in @change
#
sub dochange
{
  my %map;   # will remember the p4 rev for files in this change group, for integ records

  print "========== change group $do_change_num\n";

  if ($V > 0)
    {
      foreach $c (@change)
        {
          ($filerev, $time, $who, $state, $line, $branches, $prevrev, $options) = split(/$S/, $c);
          @filerev = split(/\//, $filerev);
          $rev = pop(@filerev);
          $file = join("/", @filerev);
         print "$who $time $filerev $state $line $branches\n";
       }
    }

  # Do the revisions...
  #
#  print "=== deletes\n";

  undef @revs;

  my $ch_time = 0;
  foreach $c (@change)
    {
      chomp $c;
      ($filerev, $time, $who, $state, $line, $branches, $prevrev, $options) = split(/$S/, $c);
      if ($line eq "$TRUNKLINE") { $line = $MAINNAME; }
      @filerev = split(/\//, $filerev);
      $rev = pop(@filerev);
      $file = join("/", @filerev);

      ($file_dir = &dirname($file)) =~ s/^$CVS_MODULE//;
      $file_dir =~ s/^\///;
      ($file_name = $file) =~ s%^.*/%%;

      $Depotfile  = &path("$P4_DEPOT/$line/", $file_dir, $file_name);
      $Importfile = &path("$IMPORT/", $file_dir, $file_name);

      if ($state eq $DEADSTATE)
        {
          $Exists_in_depot = &depot_has($Depotfile);
          if ($Exists_in_depot)
            {
	      $type = &type_of($file, $rev, $options);
	      if ($time > $ch_time) { $ch_time = $time; }
	      my $grev = &depot_newrev($Depotfile, "delete");
	      &rmap("$Depotfile#$grev", $filerev, $c);
              push(@revs, (&genrev($Depotfile,
                                   $grev,
                                   $type,
                                   $Act_delete,
                                   $time, 
                                   $Importfile,
                                   $rev,
                                   $type)));
            }
        }
    }

  if ($#revs >=  0) { &genchange(\@revs, $ch_time, $MSGS{$filerev}, $who); }

#  print "===adds/edits===\n";
  undef @revs;
  $ch_time = 0;
  foreach $c (@change)
    {
      chomp $c;
      ($filerev, $time, $who, $state, $line, $branches, $prevrev, $options) = split(/$S/, $c);
      if ($line eq "$TRUNKLINE") { $line = $MAINNAME; }
      @filerev = split(/\//, $filerev);
      $rev = pop(@filerev);
      $file = join("/", @filerev);

      ($file_dir = &dirname($file)) =~ s/^$CVS_MODULE//;
      $file_dir =~ s/^\///;
      ($file_name = $file) =~ s%^.*/%%;

      $Depotfile  = &path("$P4_DEPOT/$line/", $file_dir, $file_name);
      $Importfile = &path("$IMPORT/", $file_dir, $file_name);

      # Note: we assume binary files never become text files or vice versa
      #

      if ($state ne $DEADSTATE)
        {
          $Exists_in_depot = &depot_has($Depotfile);

          if ($Exists_in_depot)
            {
	      $type = &type_of($file, $rev, $options);
	      if ($time > $ch_time) { $ch_time = $time; }
	      my $grev = &depot_newrev($Depotfile, "edit");
	      &rmap("$Depotfile#$grev", $filerev, $c);
 	      push(@revs, (&genrev($Depotfile,
                                   $grev,
                                   $type,
                                   $Act_edit,
                                   $time,
                                   $Importfile,
                                   $rev,
                                   $type)));
	      $map{"$Depotfile$s$rev"} = $grev;
            }
          else
            {

	      $type = &type_of($file, $rev, $options);
	      if ($time > $ch_time) { $ch_time = $time; }
	      my $grev = &depot_newrev($Depotfile, "add");
	      &rmap("$Depotfile#$grev", $filerev, $c);
 	      push(@revs, (&genrev($Depotfile,
                                   $grev,
                                   $type,
                                   $Act_add,
                                   $time,
                                   $Importfile,
                                   $rev,
                                   $type)));
	      $map{"$Depotfile$s$rev"} = $grev;
            }
        }
    }

  if ($#revs >= 0) { &genchange(\@revs, $ch_time, $MSGS{$filerev}, $who); }

#  print "===branches===\n";
  undef @revs; undef @integs;
  $ch_time = 0;
  foreach $c (@change)
    {
      chomp $c;
      ($filerev, $time, $who, $state, $line, $branches, $prevrev, $options) = split(/$S/, $c);
      if ($line eq "$TRUNKLINE") { $line = $MAINNAME; }
      if ($state ne $DEADSTATE && $branches ne "-")
        {
          @filerev = split(/\//, $filerev);
          $rev = pop(@filerev);
          $file = join("/", @filerev);

          ($file_dir = &dirname($file)) =~ s/^$CVS_MODULE//;
          $file_dir =~ s/^\///;
          ($file_name = $file) =~ s%^.*/%%;

          $Depotfile  = &path("$P4_DEPOT/$line/", $file_dir, $file_name);
          $Importfile = &path("$IMPORT/", $file_dir, $file_name);

          foreach $branch (split(/:/, $branches))
            {
	      $type = &type_of($file, $rev, $options);

              $Depot_branchfile = &path("$P4_DEPOT/$branch/", $file_dir, $file_name);

	      if ($time > $ch_time) { $ch_time = $time; }
              my $grev = &depot_newrev($Depot_branchfile, "add");

	      &rmap("$Depot_branchfile#$grev", $filerev, $c);

 	      push(@revs, (&genrev($Depot_branchfile,
                                   $grev,
                                   $type,
                                   $Act_branch,
                                   $time,
                                   $Importfile,
                                   $rev,
                                   $type)));

	      my $bprev;
              if (! ($bprev = $map{"$Depotfile$s$rev"})) { die "unmapped rev"; }

	      push(@integs, "$Depot_branchfile$s$Depotfile$s$bprev");
            }
        } 
    }

  if ($#revs >= 0) { &genchange(\@revs, $ch_time, "Branching\n", $who, \@integs); }

}


###### main starts here
#  

# option switch variables get defaults here...

$Metadata = "metadata";

# option switch variables get defaults here...

$V = 0;
$Change = 1;
$Copy = 0;

while ($#ARGV >= 0)
  {
    if ($ARGV[0] eq "-c")    { $Copy = 1; shift; next; }
    elsif ($ARGV[0] eq "-v")
      {
        shift; if ($ARGV[0] < 0) { &usage; }
        $V = $ARGV[0]; shift; next;
      }
    elsif ($ARGV[0] eq "-s")
      {
        shift; if ($ARGV[0] < 0) { &usage; }
        $Change = $ARGV[0]; shift; next;
      }
    elsif ($ARGV[0] eq "-help")
      { &help; }
    elsif ($ARGV[0] =~ /^-/) { &usage; }
    push(@Args, $ARGV[0]);
    shift;
  }

if ($#Args ne 0) { &usage; }

$Convdir = $Args[0];
#chdir $Convdir || die "$Myname: can't chdir \"$Convdir\": $!";
#$Convdir = `/bin/pwd`; chop $Convdir;
#chdir $Here || die "$Myname: can't chdir \"$Here\": $!";

require "$Convdir/config";

if ($PureRCS) { $MAINNAME = "1"; }


my ($p4d_y, $p4d_r) = &p4d_vers($P4D);

if ($p4d_y < 2002)
  { print "$Myname: this version requires p4d 2002.1 or later <$p4d>.\n"; exit 1; }

if ($CHECKBIN)
  {
    #  Path the the RCS co command
    #
    if (! defined($CO)) { $CO = "/usr/local/bin/co"; }
    if (! -x ($CO))
      { print "$Myname: No executable \"co\" command at \"$CO\".\n"; exit 1; }
  }

$Metadata = "$Convdir/metadata";
$Logmsgs  = "$Convdir/logmsgs";
$Changes  = "$Convdir/changes";
$Revmap   = "$Convdir/revmap";
$Rrevmap  = "$Convdir/rrevmap";
$Depotmap = "$Convdir/depotmap";
$Client   = "$Convdir/p4";
$DBmeta   = "$P4ROOT/dbmeta";
$Checkpoint = "checkpoint";

$LOGNOTE = 1;

if (! defined($P4PORT))
  { print "$Myname: no P4PORT in \"$Convdir/config\".\n"; exit 1; }

($P4HOST = $P4PORT) =~ s/:.*//;
($P4PORTNUM = $P4PORT) =~ s/^.*://;

$P4ADMINUSER = "p4";

# These defaults can be overriden in the config file
#

if ($Change == 1)
  {
    # Remove any revmap, rrevmap files...
    #  
    if (&s("/bin/rm -f $Revmap $Revmap.db $Revmap.dir $Revmap.pag"))
      { die "/bin/rm -f $Revmap.db ..."; }
    if (&s("/bin/rm -f $Rrevmap $Rrevmap.db $Rrevmap.dir $Rrevmap.pag"))
      { die "/bin/rm -f $Rrevmap.db ..."; }
    if (&s("/bin/rm -f $Depotmap $Depotmap.db $Depotmap.dir $Depotmap.pag"))
      { die "/bin/rm -f $Depotmap.db ..."; }
    if (&s("/bin/rm -rf $P4ROOT && mkdir -p $P4ROOT"))
      { die "/bin/rm -rf $P4ROOT && mkdir -p $P4ROOT"; }
  }

$CVS_MODPATH = $CVS_MODULE;

chdir $CVS_MODPATH || die "$Myname: can't chdir \"$CVS_MODPATH\": $!";
$CVS_MODPATH = `/bin/pwd`; chop $CVS_MODPATH;
chdir $Here || die "$Myname: can't chdir \"$Here\": $!";

$CVS_MODULE_NAME = $CVS_MODULE;
$CVS_MODULE_NAME =~ s@/.*/@@g;
$IMPORT = "$DEPOT/$CVS_MODULE_NAME";

chdir $P4ROOT || die "$Myname: can't chdir \"$P4ROOT\": $!";
$P4ROOT = `/bin/pwd`; chop $P4ROOT;
if (&s("/bin/mkdir -p $P4ROOT/$DEPOT"))
  { die "/bin/mkdir -p $P4ROOT/$DEPOT"; }

#print "IMPORT $IMPORT\n"; die;

if ($Copy || $COPYIMPORT)
  {
    if (&s("/bin/cp -rp $CVS_MODPATH $P4ROOT/$IMPORT"))
      {
        print "$Myname \"/bin/cp -rp $CVS_MODPATH $P4ROOT/$IMPORT\" failed.\n";
        exit 1;
      }
     if (&s("/bin/chmod -R a-w $P4ROOT/$IMPORT"))
       {
         print "$Myname \"/bin/chmod -R a-w $P4ROOT/$IMPORT\" failed.\n";
         exit 1;
       }
  }
elsif (&s("/bin/ln -s $CVS_MODPATH $P4ROOT/$IMPORT"))
  {
    print "$Myname \"/bin/ln -s $CVS_MODPATH $P4ROOT/$IMPORT\" failed.\n";
    exit 1;
  }

chdir $Here || die "$Myname: can't chdir \"$Here\": $!";

#  Open the changes file (this is the genchanges output file)
#
if (! open(CHGS, "<$Changes"))
  { print "$Myname: can't open \"$Changes\": $!\n"; exit 1; }

#  Open the db metadata (journal format) file we will write
#
if (! open(DBMETA, ">$DBmeta"))
  { print "$Myname: can't open \"$DBmeta\": $!\n"; exit 1; }

use DB_File;
$DBMCLASS="DB_File";

$myhashinfo = new DB_File::HASHINFO;
$myhashinfo->{bsize}=4096;

#  Open the REVMAP database...
#
if (! tie(%REVMAP, $DBMCLASS, $Revmap, O_CREAT|O_RDWR, 0666, $myhashinfo))
  { print "$Myname: can't tie \"$Revmap\": $!\n"; exit 1; }

#  Open the RREVMAP database...
#
if (! tie(%RREVMAP, $DBMCLASS, $Rrevmap, O_CREAT|O_RDWR, 0666, $myhashinfo))
  { print "$Myname: can't tie \"$Rrevmap\": $!\n"; exit 1; }

#  Open the DEPOTMAP database...
#
if (! tie(%DEPOTMAP, $DBMCLASS, $Depotmap, O_CREAT|O_RDWR, 0666, $myhashinfo))
  { print "$Myname: can't tie \"$Depotmap\": $!\n"; exit 1; }

#  Open the log messages database
#
if (! tie(%MSGS, $DBMCLASS, $Logmsgs, O_RDONLY, 0444, $myhashinfo))
  { print "$Myname: can't tie \"$Logmsgs\": $!\n"; exit 1; }

#
#
($depotname) = ($P4_DEPOT =~ m/\/\/([^\/]+)\/?/);

if ($depotname ne "depot")
  {
    print DBMETA "\@pv\@ 0 \@db.depot\@ \@$depotname\@ 0 \@subdir\@ \@$depotname/...\@\n";
    $now = time;
    print DBMETA "\@pv\@ 2 \@db.domain\@ \@$depotname\@ 100 \@\@ \@\@ \@cvs2p4\@ $now $now".
                 " 0 0 \@Created by cvs2p4\n@\n"; 
  }
    
$gather_change_num = $do_change_num = 0;
while (<CHGS>)
  {
    if (/^# ([0-9]+)$/)
      {
        $gather_change_num = $1;
        if ($do_change_num)
          {
            &dochange(@change);
            $do_change_num = 0;
          }

        #  Clear the change
        #
        undef @change;
      }
    elsif ($gather_change_num)
      { push(@change, $_); $do_change_num = $gather_change_num; }
  }
if ($do_change_num) { &dochange(@change); }

$Change--;
print DBMETA "\@pv\@ 0 \@db.counters\@ \@change\@ $Change\n";

#  We've written an upgrade-level 3 compliant database.
#
print DBMETA "\@pv\@ 0 \@db.counters\@ \@upgrade\@ 3\n";

close DBMETA;
untie %MSGS;
close CHGS;
untie %REVMAP;
untie %RREVMAP;
untie %DEPOTMAP;

$DBmeta =~ s%^.*/%%;

$P4D = "$P4D -r .";

if (&s("cd $P4ROOT && $P4D -jr $DBmeta"))
  { print "$Myname: \"$P4D -jr $DBmeta\" failed.\n"; exit 1; }

if ($p4d_y > 2002 || $p4d_r > 1)
  {
    # Then we could need a database upgrade. Let's go for it...
    #
    if (&s("cd $P4ROOT && $P4D -xu"))
      { print "$Myname: \"$P4D -xu\" failed.\n"; exit 1; }
  }

if (&s("cd $P4ROOT && rm -f $Checkpoint && $P4D -jd $Checkpoint"))
  { print "$Myname: \"$P4D -jd $Checkpoint\" failed.\n"; exit 1; }

exit 0;