This program adds the given license notice at the beginning of all c, cpp, h, hpp files in a folder

add_license_notice.py

#! /usr/bin/env python
# This program adds the given license notice at the
# beginning of all c, cpp, h, hpp files in a folder
#
# usage:
# change to the directory that contains the code files
# python3 add_license_notice.py <license_file> <source_path>
# it will apply the changes too all files in that directory

import glob
import sys

if len(sys.argv) != 3:
    print('Usage: \n\tpython3 add_license_notice.py <license_file> <source_path>')
    exit()

code_files = []
for ftype in ['c', 'cpp', 'h', 'hpp']:
    code_files += glob.glob(sys.argv[2]+"/*."+ftype)

print("Files:\n"+str(code_files))

with open (sys.argv[1], 'r' ) as f:
    license = f.read()
    print("License:\n"+license)

for fname in code_files:
    with open (fname, 'r+' ) as f:
        content = f.read()
        content_new = license + '\n' + content
        f.seek(0)
        f.write(content_new)
        f.truncate()

print("Completed.")