tools/updaterevision.py

#!/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:
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#	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
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#	   contributors may be used to endorse or promote products derived from
#	   this software without specific prior written permission.
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#	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
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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()