#!/usr/bin/perl
#
# Make a fetchmail release.  Must be run as root, to make RPMs.
# Dumps a release notice and diffs as a MIME multipart message 
# in RELEASE_NOTES
#
$timezone = "-0500";

sub rfc822date
{
    @wdays  = ("Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
    @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Nov", "Dec");

    my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime(time());
    "$wdays[$wday], substr("0$mday", -2) . $months[$mon] " . " $timezone " . substr("0$hour", -2) . ":" . substr("0$min", -2) . ":" . substr("0$sec", -2) . " " . (1900+$year);
}


$version=`grep 'VERSION *=' Makefile.in`;
$version =~ /VERSION *= *(.*)/;
$version = $1;
$rcsid = $version;
$rcsid =~ tr/./-/;

open(ID, "rlog -h NEWS|");
while (<ID>) {
    last if /^symbolic names/;
}
while (<ID>) {
    if (/^\t(.*):/) {
	push(@versions, $1);
    }
}
close(ID);

if ($versions[0] eq $rcsid) {
    $rcsid = $versions[0];
    $oldid = $versions[1];
} else {
    $rcsid = '<workfile>';
    $oldid = $versions[0];
}

#$ENV{'PATH'} = "~esr/bin:/bin:/usr/bin";

print "Building $version release, RCS ID $rcsid, previous RCS ID $oldid\n";

print "Test-building the software...\n";
if (system("su -c 'make >/dev/null' esr")) {
	die("Compilation failure\n");
}

# Update the Debian logfile
open(DEBLOG, "debian/changelog");
$firstline = <DEBLOG>;
close(DEBLOG);
$firstline =~ /fetchmail \(*([^-]*)/;
$logvers = $1;
if ($version eq $logvers) {
    print "No change to Debian logfile...\n";
} else {
    $date = &rfc822date();
    print "Updating the Debian logfile ($logvers -> $version)...\n";
    open(DEBLOG, "<debian/changelog");
    open(TMP, ">mkr$$.tmp") || die("Error opening temp file\n");
    print TMP <<EOF;
fetchmail (${version}-1) unstable; urgency=low

  * new upstream version
  
 -- Eric S. Raymond <esr\@thyrsus.com>  ${date}
  
EOF
    while (<DEBLOG>) {
	print TMP $_;
    }
    close(TMP);
    close(DEBLOG);
    system("mv mkr$$.tmp debian/changelog");
}

print "Building the distribution...\n";
if (system("su -c 'make dist >/dev/null' esr")) {
	die("Distribution-build failure\n");
}

print "Building the RPMs...\n";
if (system("make rpm >/dev/null 2>/dev/null && chown esr *.rpm")) {
	die("RPM-build failure\n");
}

open(REPORT, ">PREAMBLE.$$");

print REPORT <<EOF;
From: esr\@thyrsus.com (Eric S. Raymond)
To: fetchmail-announce\@ccil.org
Reply-To: esr\@thyrsus.com (Eric S. Raymond)
Subject: The $version release of fetchmail is available
FCC: ~/postings/outmail

The $version release of fetchmail is now available at the usual locations,
including <URL:http://$ENV{'WWWVIRTUAL'}/~esr/fetchmail> and 
<URL:ftp://ftp.ccil.org/pub/esr/fetchmail>.

Here are the release notes:

EOF

# Extract the current notes
open(NEWS, "NEWS");
while (<NEWS>) {
    if (/^fetchmail/) {
	print REPORT $_;
	last;
    }
}
while (<NEWS>) {
    if (/^fetchmail/) {
	last;
    }
    print REPORT $_;
}

$oldrcs = $oldid;
$oldrcs =~ tr/-/./;
print REPORT <<EOF;

By popular demand, diffs from the previous release have been omitted.
EOF
#Diffs from the previous ($oldrcs) release follow as a MIME attachment.

close(NEWS);

close(REPORT);

if ($rcsid eq '<workfile>') {
    system("rcsdiff -u -r$oldid          RCS/* 2>/dev/null >DIFFS.$$");
} else {
    system("rcsdiff -u -r$oldid -r$rcsid RCS/* 2>/dev/null >DIFFS.$$");
}

rename("PREAMBLE.$$", "RELEASE.NOTES");
system("chown esr RELEASE.NOTES");
chmod(0700, "RELEASE.NOTES");
# If we ever want to go back to enclosing diffs.
#system "metasend -b -D 'fetchmail-$rcsid announcement' -m 'text/plain' -e 7bit -f PREAMBLE.$$ -n -D 'diff -u between -$oldrcs $rcsid' -m 'text/plain' -e 7bit -f DIFFS.$$ -o RELEASE_NOTES";

unlink("PREAMBLE.$$");
unlink("DIFFS.$$");

print "Building index page...\n";
system("rm -f index.html; indexgen.sh");

print "Done\n";

# makerelease ends here