Merge "A build property's value is returned empty in runtime when its length...

# 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

  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.

    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 + "="