#!/usr/bin/env impala-python
# Copyright 2015 Cloudera Inc.
#
# 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 tool walks the build directory (release by default) and will print the text, data,
# and bss section sizes of the archives.
import fnmatch
import os
import re
import subprocess
from prettytable import PrettyTable

def get_bin_size_data(file):
  data = ""
  try:
    data = subprocess.check_output(["size", "-B", "-t", file], stderr=subprocess.STDOUT)
  except Exception, e:
    data = e.output

  res = re.split(r'\s+', data.split("\n")[-2])
  if len(res[0].strip()) == 0:
    return res[1:-3]
  else:
    return res[:-3]

def find_files(build_type="release"):
  root_path = os.path.join(os.getenv("IMPALA_HOME"), "be", "build", build_type)
  matches = []
  for root, dirs, files in os.walk(root_path):
    for filename in fnmatch.filter(files, '*.a'):
      matches.append(os.path.join(root, filename))

  tab = PrettyTable(["file", "text", "data", "bss"])
  sums = ["Total", 0, 0, 0]
  for m in matches:
    row = [os.path.basename(m)] + get_bin_size_data(m);
    tab.add_row(row)
    for x in range(1, 4):
      sums[x] += int(row[x])
  tab.add_row(sums)
  print(tab)

if __name__ == "__main__":
  find_files()