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wireshark/make-version.pl

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#!/usr/bin/perl -w
#
# Copyright 2004 Jörg Mayer (see AUTHORS file)
#
# $Id$
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# usage: ./make-version.pl [-p|--package-version]
#
# If "version.conf" is present, it is parsed for configuration values.
# Possible values are:
#
# enable - Enable or disable versioning. Zero (0) disables, nonzero
# enables.
# svn_client - Use svn client i.s.o. ugly internal SVN file hack
# format - A strftime() formatted string to use as a template for
# the version string. The sequence "%#" will substitute
# the SVN revision number.
# pkg_enable - Enable or disable package versioning.
# pkg_format - Like "format", but used for the package version.
#
# If run with the "-p" or "--package-version" argument, the
# AC_INIT macro in configure.in and the VERSION macro in
# config.nmake will have the pkg_format template appended to the
# version number. svnversion.h will _not_ be generated if either
# argument is present.
#
# Default configuration:
#
# enable: 1
# svn_client: 1
# format: SVN %Y%m%d%H%M%S
# pkg_enable: 1
# pkg_format: -SVN-%#
# XXX - We're pretty dumb about the "%#" substitution, and about having
# spaces in the package format.
use strict;
use Time::Local;
use POSIX qw(strftime);
use Getopt::Long;
my $version_file = 'svnversion.h';
my $package_string = "";
my $vconf_file = 'version.conf';
my $last_change = 0;
my $revision = 0;
my $repo_path = "unknown";
my $pkg_version = 0;
my %version_pref = (
"enable" => 1,
"svn_client" => 1,
"format" => "SVN %Y%m%d%H%M%S",
# Normal development builds
"pkg_enable" => 1,
"pkg_format" => "-SVN-%#",
# Development releases
#"pkg_enable" => 0,
#"pkg_format" => "",
);
my $srcdir = ".";
# Run "svn info". Parse out the most recent modification time and the
# revision number.
sub read_svn_info {
my $line;
my $version_format = $version_pref{"format"};
my $package_format = "";
my $in_entries = 0;
my $svn_name;
my $repo_version;
my $repo_root = undef;
my $repo_url = undef;
my $do_hack = 1;
if ($version_pref{"pkg_enable"}) {
$package_format = $version_pref{"pkg_format"};
}
if ($version_pref{"svn_client"}) {
eval {
use warnings "all";
no warnings "all";
$line = qx{svn info $srcdir};
if (defined($line)) {
if ($line =~ /Last Changed Date: (\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
$last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
}
if ($line =~ /Last Changed Rev: (\d+)/) {
$revision = $1;
}
if ($line =~ /URL: (\S+)/) {
$repo_url = $1;
}
if ($line =~ /Repository Root: (\S+)/) {
$repo_root = $1;
}
}
1;
};
if ($last_change && $revision && $repo_url && $repo_root) {
$do_hack = 0;
}
}
# 'svn info' failed or the user really wants us to dig around in .svn/entries
if ($do_hack) {
# Start of ugly internal SVN file hack
if (! open (ENTRIES, "< $srcdir/.svn/entries")) {
print ("Unable to open $srcdir/.svn/entries\n");
} else {
# We need to find out whether our parser can handle the entries file
$line = <ENTRIES>;
chomp $line;
if ($line eq '<?xml version="1.0" encoding="utf-8"?>') {
$repo_version = "pre1.4";
} elsif ($line =~ /^8$/) {
$repo_version = "1.4";
} else {
$repo_version = "unknown";
}
if ($repo_version eq "pre1.4") {
# The entries schema is flat, so we can use regexes to parse its contents.
while ($line = <ENTRIES>) {
if ($line =~ /<entry$/ || $line =~ /<entry\s/) {
$in_entries = 1;
$svn_name = "";
}
if ($in_entries) {
if ($line =~ /name="(.*)"/) { $svn_name = $1; }
if ($line =~ /committed-date="(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)/) {
$last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
}
if ($line =~ /revision="(\d+)"/) { $revision = $1; }
}
if ($line =~ /\/>/) {
if (($svn_name eq "" || $svn_name eq "svn:this_dir") &&
$last_change && $revision) {
$in_entries = 0;
last;
}
}
# XXX - Fetch the repository root & URL
}
}
close ENTRIES;
}
}
# If we picked up the revision and modification time,
# generate our strings.
if ($revision && $last_change) {
$version_format =~ s/%#/$revision/;
$package_format =~ s/%#/$revision/;
$package_string = strftime($package_format, gmtime($last_change));
}
if ($repo_url && $repo_root && index($repo_url, $repo_root) == 0) {
$repo_path = substr($repo_url, length($repo_root));
}
}
# Read configure.in, then write it back out with an updated
# "AC_INIT" line.
sub update_configure_in
{
my $line;
my $contents = "";
my $version = "";
return if ($package_string eq "");
open(CFGIN, "< configure.in") || die "Can't read configure.in!";
while ($line = <CFGIN>) {
if ($line =~ /^AC_INIT\(wireshark, (\d+)\.(\d+).(\d+)/) {
$line = "AC_INIT\(wireshark, $1.$2.$3$package_string)\n";
}
$contents .= $line
}
open(CFGIN, "> configure.in") || die "Can't write configure.in!";
print(CFGIN $contents);
close(CFGIN);
print "configure.in has been updated.\n";
}
# Read config.nmake, then write it back out with an updated
# "VERSION" line.
sub update_config_nmake
{
my $line;
my $contents = "";
my $version = "";
my $update_ve = 0;
if ($package_string ne "") { $update_ve = 1; };
open(CFGIN, "< config.nmake") || die "Can't read config.nmake!";
while ($line = <CFGIN>) {
if ($update_ve && $line =~ /^VERSION_EXTRA=/) {
$line = "VERSION_EXTRA=$package_string\n";
}
if ($line =~ /^VERSION_BUILD=/ && int($revision) > 0) {
$line = "VERSION_BUILD=$revision\n";
}
$contents .= $line
}
open(CFGIN, "> config.nmake") || die "Can't write config.nmake!";
print(CFGIN $contents);
close(CFGIN);
print "config.nmake has been updated.\n";
}
# Print the SVN version to $version_file.
# Don't change the file if it is not needed.
sub print_svn_version
{
my $svn_version;
my $needs_update = 1;
if ($pkg_version) { return; }
if ($last_change && $revision) {
$svn_version = "#define SVNVERSION \"SVN Rev " .
$revision . "\"\n" .
"#define SVNPATH \"" . $repo_path . "\"\n";
} else {
$svn_version = "/* #define SVNVERSION \"\" */\n" .
"/* #define SVNPATH \"\" */\n";
}
if (open(OLDVER, "<$version_file")) {
if (<OLDVER> eq $svn_version) {
$needs_update = 0;
}
close OLDVER;
}
if ($needs_update == 1) {
# print "Updating $version_file so it contains:\n$svn_version";
open(VER, ">$version_file") || die ("Cannot write to $version_file ($!)\n");
print VER "$svn_version";
close VER;
print "$version_file has been updated.\n";
} else {
print "$version_file is up-to-date.\n";
}
}
# Read values from the configuration file, if it exists.
sub get_config {
my $arg;
# Get our command-line args
GetOptions("package-version", \$pkg_version);
if ($#ARGV >= 0) {
$srcdir = $ARGV[0]
}
if (! open(FILE, "<$vconf_file")) {
print STDERR "Version configuration file $vconf_file not "
. "found. Using defaults.\n";
return 1;
}
while (<FILE>) {
chomp;
next if (/^#/);
next unless (/^(\w+)(:|=)\s*(\S.*)/);
$version_pref{$1} = $3;
}
close FILE;
return 1;
}
##
## Start of code
##
&get_config();
if (-d "$srcdir/.svn") {
print "This is a build from SVN (or a SVN snapshot).\n";
&read_svn_info();
if ($pkg_version) {
print "Generating package version. Ignoring $version_file\n";
&update_configure_in;
&update_config_nmake;
} elsif ($version_pref{"enable"} == 0) {
print "Version tag disabled in $vconf_file.\n";
$last_change = 0;
$revision = 0;
} else {
print "SVN version tag will be computed.\n";
}
} else {
print "This is not a SVN build.\n";
}
&print_svn_version;
__END__
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