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import re
import sys
from datetime import datetime
CURRENT_YEAR = datetime.today().year
LICENSE_BLOB = """Copyright (c) %d The Jaeger Authors
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.""" % CURRENT_YEAR
LICENSE_BLOB_LINES_PY = [
('# ' + l).strip() + '\n' for l in LICENSE_BLOB.split('\n')
]
COPYRIGHT_RE = re.compile(r'Copyright \(c\) (\d+)', re.I)
def update_py_license(name):
with open(name) as f:
orig_lines = list(f)
lines = list(orig_lines)
found = False
changed = False
for i, line in enumerate(lines[:5]):
m = COPYRIGHT_RE.search(line)
if not m:
continue
found = True
year = int(m.group(1))
if year == CURRENT_YEAR:
break
new_line = COPYRIGHT_RE.sub('Copyright (c) %d' % CURRENT_YEAR, line)
assert line != new_line, ('Could not change year in: %s' % line)
lines[i] = new_line
changed = True
break
if not found and lines:
if 'Code generated by' in lines[0]:
lines[1:1] = ['\n'] + LICENSE_BLOB_LINES_PY
else:
lines[0:0] = LICENSE_BLOB_LINES_PY + ['\n']
changed = True
if changed:
with open(name, 'w') as f:
for line in lines:
f.write(line)
def main():
if len(sys.argv) == 1:
print('USAGE: %s FILE ...' % sys.argv[0])
sys.exit(1)
for name in sys.argv[1:]:
if name.endswith('.py'):
update_py_license(name)
else:
raise NotImplementedError('Unsupported file type: %s' % name)
if __name__ == "__main__":
main()
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