# $Id$
#
# Takes over some of the release work rather than having it all
# inline in the Makefile.

$date = `/usr/bin/date +"%a %b %d %T %Y"`;
chop $date;
$VERSION = "VERSION";
$CHANGELOG = "ChangeLog";
$TAO_VERSION = '';
$MODNAME = 'TAO';

# Range of values on this is "alpha", "beta", or "major",
# in which case the 3rd, 2nd, or 1st digit.
$BUMP_WHICH = $ENV{'RELEASE_TYPE'};

sub inplace {
    my($ext, @files) = @_;
    my(@nfiles) = ();
    my($nfile);
    $ext = '~' if ($ext eq '');
    foreach $file (@files) {
        $nfile = $file . $ext;
        if (rename ($file, $nfile)) {
            push(@nfiles, $nfile);
        }
        else {
            warn "Unable to rename $files[$i] for in-place editing: $!\n";
        }
    }
    @nfiles;
}

@inplace = inplace('.del', $VERSION, $CHANGELOG);

open (VERSION, $inplace[0])
    || die "Unable to open file $inplace[0] for inplace edit: $!\n";
open (VERSIONOUT, ">$VERSION")
    || die "Unable to open file $VERSION for writing: $!\n";

undef $version_number;
while (<VERSION>) {
    if ($BUMP_WHICH =~ m/major/i) {
        $bump_expr = 'sprintf("$1%d.0.0", $2+1)';
    }
    elsif ($BUMP_WHICH =~ m/beta/i) {
        $bump_expr = 'sprintf("$1$2.%d.0", $3+1)';
    }
    else {
        $bump_expr = 'sprintf("$1$2.$3.%d", $4+1)';
    }
    $subst = 's/(TAO version )(\d+)\.(\d+)\.(\d+)/' . $bump_expr . '/e';
    eval $subst;
    ($version_number = $_) =~ s/.*(\d+\.\d+\.\d+).*/$1/ if (!defined($version_number));
    if (s/(, released ).*/$1$date./) {
        ($TAO_VERSION = $_) =~ s/^This is //;
    }
    print VERSIONOUT $_;
}

close (VERSIONOUT);
close (VERSION);
chmod 0644, $VERSION;

$message = $date."  ".$ENV{"SIGNATURE"}."  <".$ENV{"LOGNAME"}."\@cs.wustl.edu>\n\n\t* ".$TAO_VERSION."\n";
$message_printed = 0;

open (CHANGELOG, $inplace[1])
    || die "Unable to open file $inplace[1] for inplace edit: $!\n";
open (CHANGELOGOUT, ">$CHANGELOG")
    || die "Unable to open file $CHANGELOG for writing: $!\n";

while (<CHANGELOG>) {
    print CHANGELOGOUT "$message" if ( ! $message_printed++ );
    print CHANGELOGOUT $_;
}

close (CHANGELOG);
close (CHANGELOGOUT);
chmod 0644, $CHANGELOG;

# Morph the version number
chop $version_number;
($version_tag = $MODNAME."-".$version_number) =~ s/\./_/g;

$CVSCOM = 'cvs';
$COM = qq/$CVSCOM commit -m'$TAO_VERSION' $VERSION $CHANGELOG && $CVSCOM rtag $version_tag $MODNAME && $CVSCOM rtag -F Current $MODNAME/;
print $COM;
system $COM;

unlink @inplace;