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#! /usr/bin/env python3
##
## jarsnap.py - make fat jar files
## Copyright (C) 2015 Delwink, LLC
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU Affero General Public License as published by
## the Free Software Foundation, version 3 only.
##
## 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 Affero General Public License for more details.
##
## You should have received a copy of the GNU Affero General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
##
from datetime import datetime
from getopt import gnu_getopt, GetoptError
from os import mkdir, remove, rename
from os.path import join, exists
from shutil import rmtree, make_archive, unpack_archive
from sys import argv
from tempfile import gettempdir
__title__ = 'jarsnap.py'
__version__ = '1.0.4'
__author__ = 'David McMackins II'
def make_fat_jar(jars, main_class, output_path='fat.jar'):
workdir = join(gettempdir(), '{} {}'.format(__title__, datetime.now()))
if not exists(workdir):
mkdir(workdir)
meta_inf = join(workdir, 'META-INF')
mkdir(meta_inf)
try:
for jar in jars:
unpack_archive(jar, workdir, 'zip')
with open(join(meta_inf, 'MANIFEST.MF'), 'w') as mf:
mf.write('Manifest-Version: 1.0\r\n'
+ 'Created-By: {} {}\r\n'.format(__title__, __version__)
+ 'Main-Class: {}\r\n\r\n'.format(main_class))
out_name = make_archive(output_path, 'zip', root_dir=workdir)
rename(out_name, output_path)
finally:
rmtree(workdir)
def main(argv, name='jarsnap'):
_HELP = """{} - make fat jars
Usage: {} [options] <-m|--main-class MAIN> jar1 [jar2 [jar3 ...]]
Options:
-h, --help
Displays this help and exits.
-m, --main-class=MAIN
Sets the main class path to MAIN.
-o, --output=OUTPUT
Sets the output file path to OUTPUT. Defaults to 'fat.jar'
-v, --version
Displays version information and exits.""".format(__title__,
name)
_VERSION = """{} {}
Copyright (C) 2015 Delwink, LLC
License AGPLv3: GNU AGPL version 3 only <http://gnu.org/licenses/agpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by {}""".format(__title__, __version__, __author__)
_HELPEXIT = 'Use `{} --help` for more information.'.format(name)
try:
opts, args = gnu_getopt(argv, 'vho:m:',
['version', 'help', 'output=', 'main-class='])
except GetoptError as e:
print('{}: {}'.format(__title__, e))
exit(_HELPEXIT)
main_class = ''
output_path = 'fat.jar'
for key, value in opts:
if key in ('-v', '--version'):
print(_VERSION)
exit(0)
elif key in ('-h', '--help'):
print(_HELP)
exit(0)
elif key in ('-o', '--output'):
output_path = value
elif key in ('-m', '--main-class'):
main_class = value
if not main_class:
print('{}: main class was not set!'.format(__title__))
exit(_HELPEXIT)
make_fat_jar(args, main_class, output_path)
if __name__ == '__main__':
main(argv[1:])
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