1470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt/* 2470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * Copyright (C) 2006 The Android Open Source Project 3470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * 4470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * Licensed under the Apache License, Version 2.0 (the "License"); 5470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * you may not use this file except in compliance with the License. 6470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * You may obtain a copy of the License at 7470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * 8470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * http://www.apache.org/licenses/LICENSE-2.0 9470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * 10470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * Unless required by applicable law or agreed to in writing, software 11470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * distributed under the License is distributed on an "AS IS" BASIS, 12470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * See the License for the specific language governing permissions and 14470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * limitations under the License. 15470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt */ 16470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 17470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltpackage android.util; 18470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 19470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltimport java.io.FileDescriptor; 20470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltimport java.io.PrintWriter; 21c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalleimport java.util.Calendar; 22470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltimport java.util.Iterator; 23470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltimport java.util.LinkedList; 24470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 25470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt/** 26470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt * @hide 27470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt */ 28470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwaltpublic final class LocalLog { 29470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 30470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt private LinkedList<String> mLog; 31470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt private int mMaxLines; 32c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle private long mNow; 33470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 34470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt public LocalLog(int maxLines) { 35470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt mLog = new LinkedList<String>(); 36470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt mMaxLines = maxLines; 37470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt } 38470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 39470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt public synchronized void log(String msg) { 40470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt if (mMaxLines > 0) { 41c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle mNow = System.currentTimeMillis(); 42c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle StringBuilder sb = new StringBuilder(); 43c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle Calendar c = Calendar.getInstance(); 44c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle c.setTimeInMillis(mNow); 45c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle sb.append(String.format("%tm-%td %tH:%tM:%tS.%tL", c, c, c, c, c, c)); 46c520aa89a33ddb7c065ef06bcd2d2dbf96e1f989vandwalle mLog.add(sb.toString() + " - " + msg); 47470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt while (mLog.size() > mMaxLines) mLog.remove(); 48470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt } 49470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt } 50470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt 51470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt public synchronized void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 52470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt Iterator<String> itr = mLog.listIterator(0); 53470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt while (itr.hasNext()) { 54470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt pw.println(itr.next()); 55470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt } 56470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt } 5722b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt 587523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline public synchronized void reverseDump(FileDescriptor fd, PrintWriter pw, String[] args) { 597523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline for (int i = mLog.size() - 1; i >= 0; i--) { 607523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline pw.println(mLog.get(i)); 617523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline } 627523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline } 637523eb349e7ecb1fdfd8e8a9371306ab28c046ecErik Kline 6422b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt public static class ReadOnlyLocalLog { 6522b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt private final LocalLog mLog; 6622b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt ReadOnlyLocalLog(LocalLog log) { 6722b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt mLog = log; 6822b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt } 6922b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 7022b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt mLog.dump(fd, pw, args); 7122b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt } 7222b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt } 7322b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt 7422b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt public ReadOnlyLocalLog readOnlyLocalLog() { 7522b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt return new ReadOnlyLocalLog(this); 7622b4c6a027d72ec90dc91d150bee007cb8167eedRobert Greenwalt } 77470fd72a06390d7a6b854583afd0ed76ce0a03eeRobert Greenwalt} 78