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# Copyright 2022 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
"""Serializes an Environment into a JSON file."""
from __future__ import print_function
import ntpath
import os
import posixpath
import re
# Disable super() warnings since this file must be Python 2 compatible.
# pylint: disable=super-with-arguments
class GNIVisitor(object): # pylint: disable=useless-object-inheritance
"""Serializes portions of an Environment into a gni file.
Example gni file:
declare_args() {
pw_env_setup_CIPD_DEFAULT = "//<ENVIRONMENT_DIR>/cipd/packages/default"
pw_env_setup_CIPD_PIGWEED = "//<ENVIRONMENT_DIR>/cipd/packages/pigweed"
pw_env_setup_CIPD_ARM = "//<ENVIRONMENT_DIR>/cipd/packages/arm"
pw_env_setup_CIPD_PYTHON = "//<ENVIRONMENT_DIR>/cipd/packages/python"
pw_env_setup_CIPD_BAZEL = "//<ENVIRONMENT_DIR>/cipd/packages/bazel"
pw_env_setup_CIPD_LUCI = "//<ENVIRONMENT_DIR>/cipd/packages/luci"
pw_env_setup_VIRTUAL_ENV = "//<ENVIRONMENT_DIR>/pigweed-venv"
}
"""
def __init__(self, project_root, *args, **kwargs):
super(GNIVisitor, self).__init__(*args, **kwargs)
self._project_root = project_root
self._lines = []
def serialize(self, env, outs):
self._lines.append(
"""
# This file is automatically generated by Pigweed's environment setup. Do not
# edit it manually or check it in.
""".strip()
)
self._lines.append('declare_args() {')
env.accept(self)
self._lines.append('}')
for line in self._lines:
print(line, file=outs)
self._lines = []
def _abspath_to_gn_path(self, path):
gn_path = os.path.relpath(path, start=self._project_root)
if os.name == 'nt':
# GN paths are posix-style, so convert to posix. This
# find-and-replace is a little crude, but python 2.7 doesn't support
# pathlib.
gn_path = gn_path.replace(ntpath.sep, posixpath.sep)
return '//{}'.format(gn_path)
def visit_set(self, set): # pylint: disable=redefined-builtin
match = re.search(r'PW_(.*)_CIPD_INSTALL_DIR', set.name)
if match:
name = 'pw_env_setup_CIPD_{}'.format(match.group(1))
self._lines.append(
' {} = "{}"'.format(name, self._abspath_to_gn_path(set.value))
)
if set.name == 'VIRTUAL_ENV':
self._lines.append(
' pw_env_setup_VIRTUAL_ENV = "{}"'.format(
self._abspath_to_gn_path(set.value)
)
)
if set.name == 'PW_PACKAGE_ROOT':
self._lines.append(
' pw_env_setup_PACKAGE_ROOT = "{}"'.format(
self._abspath_to_gn_path(set.value)
)
)
def visit_clear(self, clear):
pass
def visit_remove(self, remove):
pass
def visit_prepend(self, prepend):
pass
def visit_append(self, append):
pass
def visit_echo(self, echo):
pass
def visit_comment(self, comment):
pass
def visit_command(self, command):
pass
def visit_doctor(self, doctor):
pass
def visit_blank_line(self, blank_line):
pass
def visit_function(self, function):
pass
def visit_hash(self, hash): # pylint: disable=redefined-builtin
pass
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