post process the system properties
Change-Id: Ib78fe238d90dd4523326e4fa088d9333edc9e299
diff --git a/tools/post_process_props.py b/tools/post_process_props.py
new file mode 100755
index 0000000..83e1431
--- /dev/null
+++ b/tools/post_process_props.py
@@ -0,0 +1,83 @@
+#!/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):
+ pass
+
+
+# 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)
+
+
+class PropFile:
+ def __init__(self, lines):
+ self.lines = [s[:-1] for s in lines]
+
+ 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)
+ #properties.write(f)
+ properties.write(sys.stdout)
+ f.close()
+
+if __name__ == "__main__":
+ main(sys.argv)