forked from osmocom/wireshark
170 lines
4.5 KiB
Perl
Executable file
170 lines
4.5 KiB
Perl
Executable file
#!/usr/bin/perl -w
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#
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# Copyright 2004 Jörg Mayer (see AUTHORS file)
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#
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# $Id: make-version.pl,v 1.7 2004/03/04 16:19:40 jmayer Exp $
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#
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# Ethereal - Network traffic analyzer
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# By Gerald Combs <gerald@ethereal.com>
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# Copyright 1998 Gerald Combs
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# usage: ./make-version.pl
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#
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# If "version.conf" is present, it is parsed for configuration values.
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# Possible values are:
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#
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# enable - Enable or disable versioning. Zero (0) disables, nonzero
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# enables.
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# format - A strftime() formatted string to use as a template for the
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# version string.
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#
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# Default configuration:
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#
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# enable: 1
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# format: CVS %Y%m%d%H%M%S
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use strict;
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use Time::Local;
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use POSIX qw(strftime);
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my $version_file = 'cvsversion.h';
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my $vconf_file = 'version.conf';
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my %monthnum = ( "Jan" => "0", "Feb" => "1", "Mar" => "2", "Apr" => "3",
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"May" => "4", "Jun" => "5", "Jul" => "6", "Aug" => "7",
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"Sep" => "8", "Oct" => "9", "Nov" => "10", "Dec" => "11" );
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my $last = 0;
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my $last_file = undef;
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my %version_pref = ("enable" => 1, "format" => "CVS %Y%m%d%H%M%S");
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# Recursively find all CVS Entries files starting from the given directory,
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# and compute the modification time of the most recently modified Entries file.
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sub find_last_CVS_Entries {
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my $dir = shift;
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my $d;
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opendir(DIR, "$dir") || print STDERR "Can't open directory $dir ($!)\n" && next;
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foreach $d (readdir(DIR)) {
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if (-d "$dir/$d" && $d !~ /^\.(|.)$/) {
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if ($d =~ /^CVS$/) {
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if (-f "$dir/CVS/Entries") {
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&lastentry("$dir/CVS/Entries");
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}
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} else { # Recurse in directory
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&find_last_CVS_Entries("$dir/$d");
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}
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}
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}
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closedir DIR;
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}
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# Check all entries in $file. In case they are newer, update $last accordingly
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# Args: Entries file
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sub lastentry {
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my $date;
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my ($wdayascii, $monthascii, $day, $time, $year);
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my $file = shift;
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my $current;
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open(FILE, "<$file") || print STDERR "Open $file for reading failed ($!)\n" && return 1;
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while (<FILE>) {
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chomp;
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# Regular lines look like this: /ethereal_be.py/1.6/Fri Aug 2 22:55:19 2002//
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next if (/^D/);
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$date = (split(/\//, $_, 5))[3];
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# Month Day Hour Minute Second Year
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next if ($date !~ /\w{3} (\w{3}) (.\d) (\d\d):(\d\d):(\d\d) (\d{4})/);
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$current = timegm($5, $4, $3, $2, $monthnum{$1}, $6);
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if ($current > $last) {
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$last = $current;
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}
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}
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close FILE;
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return 1;
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}
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# Print the CVS version to $version_file.
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# Don't change the file if it is not needed.
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sub print_cvs_version
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{
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my $cvs_version;
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my $needs_update = 1;
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if ($last) {
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$cvs_version = "#define CVSVERSION \"" .
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strftime($version_pref{"format"}, gmtime($last)) .
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"\"\n";
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} else {
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$cvs_version = "/* #define CVSVERSION \"\" */\n";
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}
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if (open(OLDVER, "<$version_file")) {
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if (<OLDVER> eq $cvs_version) {
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print "$version_file is up-to-date.\n";
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$needs_update = 0;
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}
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close OLDVER;
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}
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if ($needs_update == 1) {
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# print "Updating $version_file so it contains:\n$cvs_version";
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open(VER, ">$version_file") || die ("Cannot write to $version_file ($!)\n");
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print VER "$cvs_version";
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close VER;
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print "$version_file has been updated.\n";
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}
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}
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# Read values from the configuration file, if it exists.
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sub get_config {
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open(FILE, "<$vconf_file") || print STDERR "Version configuration file $vconf_file not found. Using defaults.\n" && return 1;
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while (<FILE>) {
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chomp;
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next if (/^#/);
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next unless (/^(\w+):\s+(\S.*)/);
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$version_pref{$1} = $2;
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}
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close FILE;
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return 1;
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}
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##
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## Start of code
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##
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&get_config();
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if ($version_pref{"enable"} == 0) {
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print "Version tag disabled in $vconf_file.\n";
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} elsif (-d "./CVS") {
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print "This is a build from CVS (or a CVS snapshot), "
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. "CVS version tag will be computed.\n";
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&find_last_CVS_Entries(".");
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} else {
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print "This is not a CVS build.\n";
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}
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# Now that we've computed everything, print the CVS version to $version_file
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&print_cvs_version;
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__END__
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