diff -r f9f4d4d6f162 -r 51d14b0c68c0 tools/updaterevision.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/updaterevision.py	Sat Aug 03 01:18:56 2019 +0300
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# coding: utf-8
+#
+#	Copyright 2015 Teemu Piippo
+#	All rights reserved.
+#
+#	Redistribution and use in source and binary forms, with or without
+#	modification, are permitted provided that the following conditions
+#	are met:
+#
+#	1. Redistributions of source code must retain the above copyright
+#	   notice, this list of conditions and the following disclaimer.
+#	2. Redistributions in binary form must reproduce the above copyright
+#	   notice, this list of conditions and the following disclaimer in the
+#	   documentation and/or other materials provided with the distribution.
+#	3. Neither the name of the copyright holder nor the names of its
+#	   contributors may be used to endorse or promote products derived from
+#	   this software without specific prior written permission.
+#
+#	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+#	TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+#	PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
+#	OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+#	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#	PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#	LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING
+#	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+import argparse
+import outputfile
+
+def main():
+	import subprocess
+	from datetime import datetime
+	parser = argparse.ArgumentParser(description='Writes a header file with Hg commit information')
+	parser.add_argument('--cwd', default = '.')
+	parser.add_argument('output')
+	args = parser.parse_args()
+	f = outputfile.OutputFile(args.output)
+	data = subprocess.check_output(['hg', 'log', '--cwd', args.cwd, '-r.', '--template',
+		'{node|short} {branch} {date|hgdate}']).decode().replace('\n', '').split(' ')
+
+	rev = data[0]
+	branch = data[1]
+	timestamp = int(data[2])
+	date = datetime.utcfromtimestamp(timestamp)
+	datestring = date.strftime('%y%m%d-%H%M') if date.year >= 2000 else '000000-0000'
+
+	if len(rev) > 7:
+		rev = rev[0:7]
+
+	if subprocess.check_output(['hg', 'id', '--cwd', args.cwd, '-n']).decode().replace('\n', '').endswith('+'):
+		rev += '+'
+
+	f.write('#define HG_NODE "%s"\n' % rev)
+	f.write('#define HG_BRANCH "%s"\n' % branch)
+	f.write('#define HG_DATE_VERSION "%s"\n' % datestring)
+	f.write('#define HG_DATE_STRING "%s"\n' % date.strftime('%d %b %Y'))
+	f.write('#define HG_DATE_TIME %d\n' % int(timestamp))
+	if f.save():
+		print('%s updated to %s' %(f.filename, rev))
+
+if __name__ == '__main__':
+	main()