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#!/bin/sh
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# The beginning of this script is both valid POSIX shell and valid Python,
# such that the script starts with the shell and is reexecuted with
# the right Python.
# Embeds a shell script inside a Python triple quote. This pattern is valid
# shell because `''':'`, `':'` and `:` are all equivalent, and `:` is a no-op.
''':'
# Commands that are to be run with the system Python 3 instead of the
# virtualenv.
nativecmds="
bootstrap
create-mach-environment
install-moz-phab
"
run_py() {
# Try to run a specific Python interpreter.
py_executable="$1"
shift
if command -v "$py_executable" > /dev/null
then
exec "$py_executable" $py_profile_command_args "$0" "$@"
else
echo "This mach command requires $py_executable, which wasn't found on the system!"
case "$py_executable" in
python3) ;;
*)
echo "Consider running 'mach bootstrap' or 'mach create-mach-environment' to create the mach virtualenvs, or set MACH_USE_SYSTEM_PYTHON to use the system Python installation over a virtualenv."
;;
esac
exit 1
fi
}
get_command() {
# Parse the name of the mach command out of the arguments. This is necessary
# in the presence of global mach arguments that come before the name of the
# command, e.g. `mach -v build`. We dispatch to the correct Python
# interpreter depending on the command.
while true; do
case $1 in
-v|--verbose) shift;;
-l|--log-file)
if [ "$#" -lt 2 ]
then
echo
break
else
shift 2
fi
;;
--no-interactive) shift;;
--log-interval) shift;;
--log-no-times) shift;;
-h) shift;;
--debug-command) shift;;
--profile-command)
py_profile_command="1"
shift;;
--settings)
if [ "$#" -lt 2 ]
then
echo
break
else
shift 2
fi
;;
"") echo; break;;
*) echo $1; break;;
esac
done
return ${py_profile_command}
}
state_dir=${MOZBUILD_STATE_PATH:-~/.mozbuild}
command=$(get_command "$@")
py_profile_command=$?
if [ ${py_profile_command} -eq 0 ]
then
py_profile_command_args=""
else
# We would prefer to use an array variable here, but we're limited to POSIX.
# None of our arguments have quoting or spaces so we can safely interpolate
# a string instead.
py_profile_command_args="-m cProfile -o mach_profile_${command}.cProfile"
echo "Running with --profile-command. To visualize, use snakeviz:"
echo "$HOME/.mozbuild/_virtualenvs/mach/bin/python -m pip install snakeviz"
echo "$HOME/.mozbuild/_virtualenvs/mach/bin/python -m snakeviz mach_profile_${command}.cProfile"
fi
# If MACH_USE_SYSTEM_PYTHON or MOZ_AUTOMATION are set, always use the
# python 3 executables and not the virtualenv locations.
if [ -z ${MACH_USE_SYSTEM_PYTHON} ] && [ -z ${MOZ_AUTOMATION} ]
then
case "$OSTYPE" in
cygwin|msys|win32) bin_path=Scripts;;
*) bin_path=bin;;
esac
py3executable=$state_dir/_virtualenvs/mach/$bin_path/python
else
py3executable=python3
fi
# Check whether we need to run with the native Python 3 interpreter.
case " $(echo $nativecmds) " in
*\ $command\ *)
run_py python3 "$@"
;;
esac
# # Use the mach virtualenv's Python 3 for the rest of the commands.
run_py "$py3executable" "$@"
'''
from __future__ import absolute_import, print_function, unicode_literals
import os
import sys
def load_mach(dir_path, mach_path):
import importlib.util
spec = importlib.util.spec_from_file_location('mach_initialize', mach_path)
mach_initialize = importlib.util.module_from_spec(spec)
spec.loader.exec_module(mach_initialize)
return mach_initialize.initialize(dir_path)
def check_and_get_mach(dir_path):
initialize_paths = (
'build/mach_initialize.py',
# test package initialize
'tools/mach_initialize.py',
)
for initialize_path in initialize_paths:
mach_path = os.path.join(dir_path, initialize_path)
if os.path.isfile(mach_path):
return load_mach(dir_path, mach_path)
return None
def main(args):
# XCode python sets __PYVENV_LAUNCHER__, which overrides the executable
# used when a python subprocess is created. This is an issue when we want
# to run using our virtualenv python executables.
# In future Python relases, __PYVENV_LAUNCHER__ will be cleared before
# application code (mach) is started.
os.environ.pop("__PYVENV_LAUNCHER__", None)
mach = check_and_get_mach(os.path.dirname(os.path.realpath(__file__)))
if not mach:
print('Could not run mach: No mach source directory found.')
sys.exit(1)
sys.exit(mach.run(args))
if __name__ == '__main__':
main(sys.argv[1:])