#!/usr/local/bin/perl
#
# This script exports and creates a tar file for a new release of ical.
#
# Release checklist:
#	* Update CHANGES.html
#	* make shipdoc
#	* Run "release <version number>"
#	* Move the tar file to "ical/icalbins" html directory
#	* Update pointers from ical/get.html
#	* Copy the tar file to ftp.lcs.mit.edu:pub/sanjay
#	* Send out announcement to "ical-announce@lcs.mit.edu"
#	* Send out announcement to "comp.lang.tcl"

require('getopts.pl');
$opt_n = 0;
$opt_m = 0;
$opt_d = 0;
&Getopts('nmd') || &usage;

unless ($opt_m || $opt_d) {($version = shift) || &usage;}
shift && &usage;

(-e "$ENV{HOME}/bin/html2man") || &usage;
(-e "$ENV{HOME}/bin/html2tk") || &usage;
(-e "./doc/ical.html") || &dir;

$SIG{'INT'} = 'interrupt';
$SIG{'HUP'} = 'interrupt';

# Generate various documents
&execute("cd doc ; make release");

# See if we are just "making" stuff
exit 0 if ($opt_m);

# Generate Makefile dependencies
$cinc = "-I/usr/include/cxx";
$incs = "-Itypes -Itime -Icalendar -I/usr/local/include";
&execute("Mdepend $incs $cinc -f Makefile.in *.C");
chdir('types');
&execute("Mdepend $cinc -f Makefile.in *.C");
chdir('../time');
&execute("Mdepend -I../types $cinc -f Makefile.in *.C");
chdir('../calendar');
&execute("Mdepend -I../types -I../time $cinc -f Makefile.in *.C");
chdir('..');

# See if we just want dependencies
exit 0 if ($opt_d);

($tag = 'Ical_' . $version) =~ s/[^\w\d]/_/g;
$dir = 'ical-' . $version;

# Store version number in sources
&execute('perl -pi~ -e ' .
	 '\'s|ICAL_VERSION=.*|ICAL_VERSION="' . $version . '"|\' ' .
	 'configure.in');
&execute('autoconf');

# Commit sources
&execute("cvs commit -m $tag");

# Add tag
&execute("cvs tag $tag");

# Extract the right release
&execute("cvs export -r $tag -d $dir ical");

# Generate the tar file
&execute("gtar cfpv - $dir | gzip > $dir.tar.gz");

# Remove the exported sources
&execute("rm -rf $dir");

sub execute {
    local($_) = @_;

    print STDERR $_ . "\n";
    return 1 if ($opt_n);

    system($_) && &cleanup;
    return 1;
}

sub usage {
    warn("Usage: release [-n] <version id>\n\n");
    warn("This is script intended to be run ONLY BY ME before I release\n");
    warn("ical to the world.  It depends on things that other people\n");
    warn("probably do not have.\n");
    warn("\n");
    warn("--Sanjay Ghemawat\n");
    &cleanup;
}

sub dir {
    warn("This script should be run from the ical source directory.\n"); 
    &cleanup;
}

sub cleanup {
    warn("\n*** failure ***\n");
    exit(1);
}