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#!/usr/bin/env python
#
# Copyright (C) 2009 The Android Open Source Project
#
# 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.
import sys
# Put the modifications that you need to make into the /system/build.prop into this
# function. The prop object has get(name) and put(name,value) methods.
def mangle_build_prop(prop):
buildprops=prop.buildprops
check_pass=True
for key in buildprops:
# Check build properties' length.
# Terminator(\0) added into the provided value of properties
# Total length (including terminator) will be no greater that PROP_VALUE_MAX(92).
if len(buildprops[key]) > 91:
# If dev build, show a warning message, otherwise fail the build with error message
if prop.get("ro.build.version.incremental").startswith("eng"):
sys.stderr.write("warning: " + key + " exceeds 91 symbols: ")
sys.stderr.write(buildprops[key])
sys.stderr.write("(" + str(len(buildprops[key])) + ") \n")
sys.stderr.write("warning: This will cause the " + key + " ")
sys.stderr.write("property return as empty at runtime\n")
else:
check_pass=False
sys.stderr.write("error: " + key + " cannot exceed 91 symbols: ")
sys.stderr.write(buildprops[key])
sys.stderr.write("(" + str(len(buildprops[key])) + ") \n")
if not check_pass:
sys.exit(1)
# Put the modifications that you need to make into the /system/build.prop into this
# function. The prop object has get(name) and put(name,value) methods.
def mangle_default_prop(prop):
# If ro.debuggable is 1, then enable adb on USB by default
# (this is for userdebug builds)
if prop.get("ro.debuggable") == "1":
val = prop.get("persist.sys.usb.config")
if val == "":
val = "adb"
else:
val = val + ",adb"
prop.put("persist.sys.usb.config", val)
# UsbDeviceManager expects a value here. If it doesn't get it, it will
# default to "adb". That might not the right policy there, but it's better
# to be explicit.
if not prop.get("persist.sys.usb.config"):
prop.put("persist.sys.usb.config", "none");
class PropFile:
buildprops={}
def __init__(self, lines):
self.lines = [s[:-1] for s in lines]
for line in self.lines:
line=line.strip()
if not line.strip() or line.startswith("#"):
continue
index=line.find("=")
key=line[0:index]
value=line[index+1:]
self.buildprops[key]=value
def get(self, name):
key = name + "="
for line in self.lines:
if line.startswith(key):
return line[len(key):]
return ""
def put(self, name, value):
key = name + "="
for i in range(0,len(self.lines)):
if self.lines[i].startswith(key):
self.lines[i] = key + value
return
self.lines.append(key + value)
def write(self, f):
f.write("\n".join(self.lines))
f.write("\n")
def main(argv):
filename = argv[1]
f = open(filename)
lines = f.readlines()
f.close()
properties = PropFile(lines)
if filename.endswith("/build.prop"):
mangle_build_prop(properties)
elif filename.endswith("/default.prop"):
mangle_default_prop(properties)
else:
sys.stderr.write("bad command line: " + str(argv) + "\n")
sys.exit(1)
f = open(filename, 'w+')
properties.write(f)
f.close()
if __name__ == "__main__":
main(sys.argv)
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