content: /*
   * Copyright (C) 2008 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.
   */
  
  /**
   * One line from the loaded-classes file.
   */
  class Record {
  
      /**
       * The delimiter character we use, {@code :}, conflicts with some other
       * names. In that case, manually replace the delimiter with something else.
       */
      private static final String[] REPLACE_CLASSES = {
              "com.google.android.apps.maps:FriendService",
              "com.google.android.apps.maps\\u003AFriendService",
              "com.google.android.apps.maps:driveabout",
              "com.google.android.apps.maps\\u003Adriveabout",
              "com.google.android.apps.maps:GoogleLocationService",
              "com.google.android.apps.maps\\u003AGoogleLocationService",
              "com.google.android.apps.maps:LocationFriendService",
              "com.google.android.apps.maps\\u003ALocationFriendService",
              "com.google.android.apps.maps:MapsBackgroundService",
              "com.google.android.apps.maps\\u003AMapsBackgroundService",
              "com.google.android.apps.maps:NetworkLocationService",
              "com.google.android.apps.maps\\u003ANetworkLocationService",
              "com.android.chrome:sandboxed_process",
              "com.android.chrome\\u003Asandboxed_process",
              "com.android.fakeoemfeatures:background",
              "com.android.fakeoemfeatures\\u003Abackground",
              "com.android.fakeoemfeatures:core",
              "com.android.fakeoemfeatures\\u003Acore",
              "com.android.launcher:wallpaper_chooser",
              "com.android.launcher\\u003Awallpaper_chooser",
              "com.android.nfc:handover",
              "com.android.nfc\\u003Ahandover",
              "com.google.android.music:main",
              "com.google.android.music\\u003Amain",
              "com.google.android.music:ui",
              "com.google.android.music\\u003Aui",
              "com.google.android.setupwarlock:broker",
              "com.google.android.setupwarlock\\u003Abroker",
              "mobi.mgeek.TunnyBrowser:DolphinNotification",
              "mobi.mgeek.TunnyBrowser\\u003ADolphinNotification",
              "com.qo.android.sp.oem:Quickword",
              "com.qo.android.sp.oem\\u003AQuickword",
              "android:ui",
              "android\\u003Aui",
              "system:ui",
              "system\\u003Aui",
      };
  
      enum Type {
          /** Start of initialization. */
          START_LOAD,
  
          /** End of initialization. */
          END_LOAD,
  
          /** Start of initialization. */
          START_INIT,
  
          /** End of initialization. */
          END_INIT
      }
  
      /** Parent process ID. */
      final int ppid;
  
      /** Process ID. */
      final int pid;
  
      /** Thread ID. */
      final int tid;
  
      /** Process name. */
      final String processName;
  
      /** Class loader pointer. */
      final int classLoader;
  
      /** Type of record. */
      final Type type;
  
      /** Name of loaded class. */
      final String className;
  
      /** Record time (ns). */
      final long time;
  
      /** Source file line# */
      int sourceLineNumber;
  
      /**
       * Parses a line from the loaded-classes file.
       */
      Record(String line, int lineNum) {
          char typeChar = line.charAt(0);
          switch (typeChar) {
              case '>': type = Type.START_LOAD; break;
              case '<': type = Type.END_LOAD; break;
              case '+': type = Type.START_INIT; break;
              case '-': type = Type.END_INIT; break;
              default: throw new AssertionError("Bad line: " + line);
          }
  
          sourceLineNumber = lineNum;
  
          for (int i = 0; i < REPLACE_CLASSES.length; i+= 2) {
              line = line.replace(REPLACE_CLASSES[i], REPLACE_CLASSES[i+1]);
          }
  
          line = line.substring(1);
          String[] parts = line.split(":");
  
          ppid = Integer.parseInt(parts[0]);
          pid = Integer.parseInt(parts[1]);
          tid = Integer.parseInt(parts[2]);
  
          processName = decode(parts[3]).intern();
  
          classLoader = Integer.parseInt(parts[4]);
          className = vmTypeToLanguage(decode(parts[5])).intern();
  
          time = Long.parseLong(parts[6]);
      }
  
      /**
       * Decode any escaping that may have been written to the log line.
       *
       * Supports unicode-style escaping:  \\uXXXX = character in hex
       *
       * @param rawField the field as it was written into the log
       * @result the same field with any escaped characters replaced
       */
      String decode(String rawField) {
          String result = rawField;
          int offset = result.indexOf("\\u");
          while (offset >= 0) {
              String before = result.substring(0, offset);
              String escaped = result.substring(offset+2, offset+6);
              String after = result.substring(offset+6);
  
              result = String.format("%s%c%s", before, Integer.parseInt(escaped, 16), after);
  
              // find another but don't recurse
              offset = result.indexOf("\\u", offset + 1);
          }
          return result;
      }
  
      /**
       * Converts a VM-style name to a language-style name.
       */
      String vmTypeToLanguage(String typeName) {
          // if the typename is (null), just return it as-is.  This is probably in dexopt and
          // will be discarded anyway.  NOTE: This corresponds to the case in dalvik/vm/oo/Class.c
          // where dvmLinkClass() returns false and we clean up and exit.
          if ("(null)".equals(typeName)) {
              return typeName;
          }
  
          if (!typeName.startsWith("L") || !typeName.endsWith(";") ) {
              throw new AssertionError("Bad name: " + typeName + " in line " + sourceLineNumber);
          }
  
          typeName = typeName.substring(1, typeName.length() - 1);
          return typeName.replace("/", ".");
      }
  }
  