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path: root/util/licensecheck.py
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#!/usr/bin/env python3

# TODO: username argument
# TODO: updating licenses

import argparse
import datetime

def getLicense(licenseFile):
    with open(licenseFile) as rawlicense:
        licensetext = rawlicense.read()
    
    # fill in name and year
    licensetext = licensetext.replace('$AUTHOR$', 'Xian Nox')
    licensetext = licensetext.replace('$CURRENTYEAR$', str(datetime.datetime.now().year))
    
    return licensetext

def hasLicense(sourceFile):
    with open(sourceFile) as source:
        if source.readline().startswith('/** LICENSE **'):
            return True
        else:
            return False

def fix(sourceFile, licenseText):
    with open(sourceFile, 'r') as source:
        origData = source.read()
    with open(sourceFile, 'w') as source:
        source.write(licenseText + origData)

def main(license, src, verbose=False):
    if verbose is True:
        print("Using license header {0}".format(license))
        print("Going through {0}".format(src))

    # read license file
    licensetext = getLicense(license)
    #print(licensetext)
    
    # open source file and check for license
    for filename in src:
        if hasLicense(filename):
            print("{0} has license".format(filename))
        else:
            fix(filename, licensetext)
            print("{0} license added".format(filename))

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Check source files for license')
    parser.add_argument('-l', '--license', required=True)
    parser.add_argument('-v', '--verbose', action='store_true')
    parser.add_argument('src', nargs='*')
    args = parser.parse_args()

    main(args.license, args.src, args.verbose)
else:
    print('Do not use this as an import!')
    sys.exit(-1)