| # This Source Code Form is subject to the terms of the Mozilla Public |
| # License, v. 2.0. If a copy of the MPL was not distributed with this |
| # file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| '''A generic script to add entries to a file |
| if the entry does not already exist. |
| |
| Usage: buildlist.py <filename> <entry> [<entry> ...] |
| ''' |
| from __future__ import absolute_import, print_function |
| |
| import sys |
| import os |
| |
| from mozbuild.util import ( |
| ensureParentDir, |
| lock_file, |
| ) |
| |
| def addEntriesToListFile(listFile, entries): |
| """Given a file |listFile| containing one entry per line, |
| add each entry in |entries| to the file, unless it is already |
| present.""" |
| ensureParentDir(listFile) |
| lock = lock_file(listFile + ".lck") |
| try: |
| if os.path.exists(listFile): |
| f = open(listFile) |
| existing = set(x.strip() for x in f.readlines()) |
| f.close() |
| else: |
| existing = set() |
| for e in entries: |
| if e not in existing: |
| existing.add(e) |
| with open(listFile, 'wb') as f: |
| f.write("\n".join(sorted(existing))+"\n") |
| finally: |
| lock = None |
| |
| |
| def main(args): |
| if len(args) < 2: |
| print("Usage: buildlist.py <list file> <entry> [<entry> ...]", |
| file=sys.stderr) |
| return 1 |
| |
| return addEntriesToListFile(args[0], args[1:]) |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv[1:])) |
