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#! /usr/bin/python3
# Copyright (C) 2013 Canonical Ltd.
# Author: Colin Watson <cjwatson@ubuntu.com>
# 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; version 3 of the License.
#
# 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/>.
"""Operations on Click packages."""
from __future__ import print_function
from optparse import OptionParser
import os
import signal
import sys
from textwrap import dedent
# Support running from the build tree.
sys.path.insert(0, os.path.join(sys.path[0], os.pardir))
import gi
gi.require_version('Click', '0.4')
# There is an unfortunate name clash with
# https://pypi.python.org/pypi/click; try to detect this and take evasive
# action.
import click_package as click
if not getattr(click, "_CLICK_IS_A_PACKAGING_FORMAT_", None):
import site
wrong_click_mods = [
mod for mod in sys.modules if mod.split(".")[0] == "click"]
for mod in wrong_click_mods:
del sys.modules[mod]
try:
user_site_index = sys.path.index(site.getusersitepackages())
except ValueError:
print(
"Cannot start click due to a conflict with a different "
"locally-installed Python 'click' package. Remove it using "
"Python packaging tools and try again.",
file=sys.stderr)
sys.exit(1)
del sys.path[user_site_index]
from click_package import commands
def fix_stdout():
if sys.version >= "3":
# Force encoding to UTF-8 even in non-UTF-8 locales.
import io
sys.stdout = io.TextIOWrapper(
sys.stdout.detach(), encoding="UTF-8", line_buffering=True)
else:
# Avoid having to do .encode("UTF-8") everywhere.
import codecs
sys.stdout = codecs.EncodedFile(sys.stdout, "UTF-8")
def null_decode(input, errors="strict"):
return input, len(input)
sys.stdout.decode = null_decode
def main():
fix_stdout()
# Python's default handling of SIGPIPE is not helpful to us.
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
parser = OptionParser(dedent("""\
%%prog COMMAND [options]
Commands are as follows ('%%prog COMMAND --help' for more):
%s""") % commands.help_text())
parser.disable_interspersed_args()
_, args = parser.parse_args()
if not args:
parser.print_help()
return 0
command = args[0]
args = args[1:]
if command == "help":
if args and args[0] in commands.all_commands:
mod = commands.load_command(args[0])
mod.run(["--help"])
else:
parser.print_help()
return 0
if command not in commands.all_commands:
parser.error("unknown command: %s" % command)
mod = commands.load_command(command)
return mod.run(args)
if __name__ == "__main__":
sys.exit(main())
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