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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Script to generate a list of object files.
0 represents a good object file.
1 represents a bad object file.
"""
import argparse
import os
import random
import sys
from binary_search_tool.test import common
def Main(argv):
"""Generates a list, the value of each element is 0 or 1.
The number of 1s in the list is specified by bad_obj_num.
The others are all 0s. The total number of 0s and 1s is specified by obj_num.
Args:
argv: argument from command line
Returns:
0 always.
"""
parser = argparse.ArgumentParser()
parser.add_argument(
"-n",
"--obj_num",
dest="obj_num",
default=common.DEFAULT_OBJECT_NUMBER,
help=("Number of total objects."),
)
parser.add_argument(
"-b",
"--bad_obj_num",
dest="bad_obj_num",
default=common.DEFAULT_BAD_OBJECT_NUMBER,
help=(
"Number of bad objects. Must be great than or "
"equal to zero and less than total object "
"number."
),
)
parser.add_argument(
"-o",
"--obj_list",
dest="obj_list",
default="",
help=(
"List of comma seperated objects to generate. "
"A 0 means the object is good, a 1 means the "
"object is bad."
),
)
options = parser.parse_args(argv)
obj_num = int(options.obj_num)
bad_obj_num = int(options.bad_obj_num)
bad_to_gen = int(options.bad_obj_num)
obj_list = options.obj_list
if not obj_list:
obj_list = []
for i in range(obj_num):
if bad_to_gen > 0 and random.randint(1, obj_num) <= bad_obj_num:
obj_list.append(1)
bad_to_gen -= 1
else:
obj_list.append(0)
while bad_to_gen > 0:
t = random.randint(0, obj_num - 1)
if obj_list[t] == 0:
obj_list[t] = 1
bad_to_gen -= 1
else:
obj_list = obj_list.split(",")
if os.path.isfile(common.OBJECTS_FILE):
os.remove(common.OBJECTS_FILE)
if os.path.isfile(common.WORKING_SET_FILE):
os.remove(common.WORKING_SET_FILE)
with open(common.OBJECTS_FILE, "w", encoding="utf-8") as f:
with open(common.WORKING_SET_FILE, "w", encoding="utf-8") as w:
for i in obj_list:
f.write("{0}\n".format(i))
w.write("{0}\n".format(i))
obj_num = len(obj_list)
bad_obj_num = obj_list.count(1)
print(
"Generated {0} object files, with {1} bad ones.".format(
obj_num, bad_obj_num
)
)
return 0
if __name__ == "__main__":
retval = Main(sys.argv[1:])
sys.exit(retval)
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