#
# Copyright (C) 2022 The Android Open Source Project
#
# 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
#
#     http://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.

# This file contains utils for constructing -Xbootclasspath and -Xbootclasspath-location
# for dex2oat and dalvikvm from apex modules list.
#
# Those utils could be used outside of art/test/ to run ART in chroot setup.

import os, sys

# Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
# because that's what we use for compiling the boot.art image.
# It may contain additional modules from TEST_CORE_JARS.
bpath_modules = ("core-oj core-libart okhttp bouncycastle apache-xml core-icu4j"
                 " conscrypt")


# Helper function to construct paths for apex modules (for both -Xbootclasspath and
# -Xbootclasspath-location).
#
#  Arguments.
#   ${1}: path prefix.
def get_apex_bootclasspath_impl(bpath_prefix: str):
  bpath_separator = ""
  bpath = ""
  bpath_jar = ""
  for bpath_module in bpath_modules.split(" "):
    apex_module = "com.android.art"
    if bpath_module == "conscrypt":
      apex_module = "com.android.conscrypt"
    if bpath_module == "core-icu4j":
      apex_module = "com.android.i18n"
    bpath_jar = f"/apex/{apex_module}/javalib/{bpath_module}.jar"
    bpath += f"{bpath_separator}{bpath_prefix}{bpath_jar}"
    bpath_separator = ":"
  return bpath


# Gets a -Xbootclasspath paths with the apex modules.
#
#  Arguments.
#   ${1}: host (y|n).
def get_apex_bootclasspath(host: bool):
  bpath_prefix = ""

  if host:
    bpath_prefix = os.environ["ANDROID_HOST_OUT"]

  return get_apex_bootclasspath_impl(bpath_prefix)


# Gets a -Xbootclasspath-location paths with the apex modules.
#
#  Arguments.
#   ${1}: host (y|n).
def get_apex_bootclasspath_locations(host: bool):
  bpath_location_prefix = ""

  if host:
    ANDROID_BUILD_TOP=os.environ["ANDROID_BUILD_TOP"]
    ANDROID_HOST_OUT=os.environ["ANDROID_HOST_OUT"]
    if ANDROID_HOST_OUT[0:len(ANDROID_BUILD_TOP)+1] == f"{ANDROID_BUILD_TOP}/":
      bpath_location_prefix=ANDROID_HOST_OUT[len(ANDROID_BUILD_TOP)+1:]
    else:
      print(f"ANDROID_BUILD_TOP/ is not a prefix of ANDROID_HOST_OUT"\
            "\nANDROID_BUILD_TOP={ANDROID_BUILD_TOP}"\
            "\nANDROID_HOST_OUT={ANDROID_HOST_OUT}")
      sys.exit(1)

  return get_apex_bootclasspath_impl(bpath_location_prefix)