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1#!/usr/bin/env python
2#
3# Copyright (C) 2009 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17import sys
18
19# Put the modifications that you need to make into the /system/build.prop into this
20# function. The prop object has get(name) and put(name,value) methods.
21def mangle_build_prop(prop):
22  pass
23
24
25# Put the modifications that you need to make into the /system/build.prop into this
26# function. The prop object has get(name) and put(name,value) methods.
27def mangle_default_prop(prop):
28  # If ro.debuggable is 1, then enable adb on USB by default
29  # (this is for userdebug builds)
30  if prop.get("ro.debuggable") == "1":
31    val = prop.get("persist.sys.usb.config")
32    if val == "":
33      val = "adb"
34    else:
35      val = val + ",adb"
36    prop.put("persist.sys.usb.config", val)
37
38
39class PropFile:
40  def __init__(self, lines):
41    self.lines = [s[:-1] for s in lines]
42
43  def get(self, name):
44    key = name + "="
45    for line in self.lines:
46      if line.startswith(key):
47        return line[len(key):]
48    return ""
49
50  def put(self, name, value):
51    key = name + "="
52    for i in range(0,len(self.lines)):
53      if self.lines[i].startswith(key):
54        self.lines[i] = key + value
55        return
56    self.lines.append(key + value)
57
58  def write(self, f):
59    f.write("\n".join(self.lines))
60    f.write("\n")
61
62def main(argv):
63  filename = argv[1]
64  f = open(filename)
65  lines = f.readlines()
66  f.close()
67
68  properties = PropFile(lines)
69  if filename.endswith("/build.prop"):
70    mangle_build_prop(properties)
71  elif filename.endswith("/default.prop"):
72    mangle_default_prop(properties)
73  else:
74    sys.stderr.write("bad command line: " + str(argv) + "\n")
75    sys.exit(1)
76
77  f = open(filename, 'w+')
78  properties.write(f)
79  f.close()
80
81if __name__ == "__main__":
82  main(sys.argv)
83