upload android base code part3

android/build/make/tools/post_process_props.py

@@ -0,0 +1,144 @@
+#!/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
+
+# Usage: post_process_props.py file.prop [blacklist_key, ...]
+# Blacklisted keys are removed from the property file, if present
+
+# See PROP_VALUE_MAX in system_properties.h.
+# The constant in system_properties.h includes the terminating NUL,
+# so we decrease the value by 1 here.
+PROP_VALUE_MAX = 91
+
+# 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 /vendor/default.prop and
+# /odm/default.prop into this function. The prop object has get(name) and
+# put(name,value) methods.
+def mangle_default_prop_override(prop):
+  pass
+
+# Put the modifications that you need to make into the /system/etc/prop.default 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 "adb" not in val:
+      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");
+
+def validate(prop):
+  """Validate the properties.
+
+  Returns:
+    True if nothing is wrong.
+  """
+  check_pass = True
+  buildprops = prop.to_dict()
+  for key, value in buildprops.iteritems():
+    # Check build properties' length.
+    if len(value) > PROP_VALUE_MAX:
+      check_pass = False
+      sys.stderr.write("error: %s cannot exceed %d bytes: " %
+                       (key, PROP_VALUE_MAX))
+      sys.stderr.write("%s (%d)\n" % (value, len(value)))
+  return check_pass
+
+class PropFile:
+
+  def __init__(self, lines):
+    self.lines = [s.strip() for s in lines]
+
+  def to_dict(self):
+    props = {}
+    for line in self.lines:
+      if not line or line.startswith("#"):
+        continue
+      if "=" in line:
+        key, value = line.split("=", 1)
+        props[key] = value
+    return props
+
+  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 delete(self, name):
+    key = name + "="
+    self.lines = [ line for line in self.lines if not line.startswith(key) ]
+
+  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("/vendor/default.prop") or
+        filename.endswith("/odm/default.prop")):
+    mangle_default_prop_override(properties)
+  elif (filename.endswith("/default.prop") or # legacy
+        filename.endswith("/prop.default")):
+    mangle_default_prop(properties)
+  else:
+    sys.stderr.write("bad command line: " + str(argv) + "\n")
+    sys.exit(1)
+
+  if not validate(properties):
+    sys.exit(1)
+
+  # Drop any blacklisted keys
+  for key in argv[2:]:
+    properties.delete(key)
+
+  f = open(filename, 'w+')
+  properties.write(f)
+  f.close()
+
+if __name__ == "__main__":
+  main(sys.argv)