import sys

import os

import subprocess

def run_cmd(cmd, msg="Failed to run command"):

print('Running ' + ' '.join(cmd))

if subprocess.check_call(cmd):

print(msg)

exit(1)

def run_cmd_cwd(cmd, cwd, msg="Failed to run command"):

print('Change working directory to: ' + cwd)

print('Running ' + ' '.join(cmd))

if subprocess.check_call(cmd, cwd=cwd):

print(msg)

exit(1)

def get_argv(index, default):

if len(sys.argv) > index:

return sys.argv[index]

return default

def trim_output_file(file):

# Remove the leading and trailing bytes from the file

length = os.stat(file).st_size

if length < 20:

contents = b''

else:

f = open(file, "rb")

try:

pre = f.read(2)

print("Start characters in file skipped.", pre)

contents = f.read(length - 5)

post = f.read(3)

print("End characters in file skipped.", post)

finally:

f.close()

f = open(file, "wb")

f.write(contents)

f.close()

# remove all files with extension

def remove_files(path, ext):

for file in os.listdir(path):

if file.endswith(ext):

os.remove(os.path.join(path, file))