#!/usr/bin/env python
#
# Copyright (C) 2017 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.
#

import sys
import subprocess

def create_map_file(lib_file, map_file):
    output = open(map_file + ".map.txt", 'w')
    symbols = subprocess.check_output(['nm', '-g', '--defined-only', lib_file])
    output.write('# AUTO-GENERATED by device/rockchip/common/mapfile.py. DO NOT EDIT.\n')
    output.write(map_file.upper() + ' {\n')
    output.write('  global:\n')
    for line in symbols.splitlines():
        _, symbol_type, symbol_name = line.split(' ', 2)
        if symbol_type in ['T', 'W', 'B']:
            output.write('    {};\n'.format(symbol_name))

    output.write('  local:\n')
    output.write('    *;\n')
    output.write('};\n')
    output.close()
    print("GENERATED: " + map_file + ".map.txt")

# for testing and standalone usage.
if __name__ == '__main__':
    if len(sys.argv) == 2:
        lib_file = sys.argv[1]
        temp_array = lib_file[:-3].split('/')
        array_count = len(temp_array)
        file_name = temp_array[array_count - 1]
        create_map_file(lib_file, file_name)
    elif len(sys.argv) == 3:
        create_map_file(sys.argv[1], sys.argv[2])
    else:
        print("********************************************")
        print("usage:")
        print("./mapfile.py symbol_lib map_file_name")
        print("or")
        print("./mapfile.py symbol_lib")
        print("********************************************")