| #!/usr/bin/env python |
| |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| |
| import sys |
| |
| marker = b"<DATA_CHARS>" |
| |
| def expand(data): |
| """ |
| Expand *data* as a initializer list of hexadecimal char escapes. |
| """ |
| expanded_data = ", ".join([hex(c) for c in bytearray(data)]) |
| return expanded_data.encode('ascii') |
| |
| |
| def apply_template(template, data): |
| if template.count(marker) != 1: |
| raise ValueError("Invalid template") |
| return template.replace(marker, expand(data)) |
| |
| |
| if __name__ == "__main__": |
| if len(sys.argv) != 4: |
| raise ValueError("Usage: {0} <template file> <data file> " |
| "<output file>".format(sys.argv[0])) |
| with open(sys.argv[1], "rb") as f: |
| template = f.read() |
| with open(sys.argv[2], "rb") as f: |
| data = f.read() |
| |
| expanded_data = apply_template(template, data) |
| with open(sys.argv[3], "wb") as f: |
| f.write(expanded_data) |