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#!/usr/bin/python
# Copyright 2011 Lars Wirzenius
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import cliapp
import os
import tempfile
class FixShebang(cliapp.Application):
def add_settings(self):
self.settings.string(['shebang'], 'interpreter path and args')
def process_input(self, arg):
name = self.create_tempfile_for(arg)
temp = open(name, 'w')
shebang = self.settings['shebang']
if not shebang:
raise Exception('You must specify an interpreter with --shebang')
if not shebang.startswith('#!'):
shebang = '#!%s' % shebang
temp.write('%s\n' % shebang)
f = open(arg)
line1 = f.readline()
if line1 and not line1.startswith('#!'):
temp.write(line1)
for line in f:
temp.write(line)
f.close()
temp.close()
os.rename(name, arg)
def create_tempfile_for(self, filename):
fd, name = tempfile.mkstemp(dir=os.path.dirname(filename))
os.close(fd)
return name
if __name__ == '__main__':
FixShebang().run()
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