1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
# 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 https://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> ...]
'''
import sys
import os
from utils import lockFile
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."""
lock = lockFile(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()
f = open(listFile, 'a')
for e in entries:
if e not in existing:
f.write("{0}\n".format(e))
existing.add(e)
f.close()
finally:
lock = None
if __name__ == '__main__':
if len(sys.argv) < 3:
print("Usage: buildlist.py <list file> <entry> [<entry> ...]",
file=sys.stderr)
sys.exit(1)
addEntriesToListFile(sys.argv[1], sys.argv[2:])
|
