Seperate apk_info and jar_info.

build/android/pylib/utils/apk_info.py

+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Gathers information about APKs."""
+
+import logging
+import os
+import re
+
+# TODO(frankf): Move cmd_helper to utils.
+from pylib import cmd_helper
+
+
+def GetPackageNameForApk(apk_path):
+  """Returns the package name of this APK."""
+  aapt_output = cmd_helper.GetCmdOutput(
+      ['aapt', 'dump', 'badging', apk_path]).split('\n')
+  package_name_re = re.compile(r'package: .*name=\'(\S*)\'')
+  for line in aapt_output:
+    m = package_name_re.match(line)
+    if m:
+      return m.group(1)
+  raise Exception('Failed to determine package name of %s' % apk_path)
+
+
+class ApkInfo(object):
+  """Helper class for inspecting APKs."""
+
+  def __init__(self, apk_path):
+    if not os.path.exists(apk_path):
+      raise Exception('%s not found, please build it' % apk_path)
+    self._apk_path = apk_path
+
+  def GetApkPath(self):
+    return self._apk_path
+
+  def GetPackageName(self):
+    """Returns the package name of this APK."""
+    return GetPackageNameForApk(self._apk_path)
+