| /* |
| * 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. |
| */ |
| |
| package android.util; |
| |
| import android.util.Log; |
| |
| import java.io.BufferedReader; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** Parsed representation of /etc/event-log-tags. */ |
| public class EventLogTags { |
| private final static String TAG = "EventLogTags"; |
| |
| private final static String TAGS_FILE = "/etc/event-log-tags"; |
| |
| public static class Description { |
| public final int mTag; |
| public final String mName; |
| // TODO: Parse parameter descriptions when anyone has a use for them. |
| |
| Description(int tag, String name) { |
| mTag = tag; |
| mName = name; |
| } |
| } |
| |
| private final static Pattern COMMENT_PATTERN = Pattern.compile( |
| "^\\s*(#.*)?$"); |
| |
| private final static Pattern TAG_PATTERN = Pattern.compile( |
| "^\\s*(\\d+)\\s+(\\w+)\\s*(\\(.*\\))?\\s*$"); |
| |
| private final HashMap<String, Description> mNameMap = |
| new HashMap<String, Description>(); |
| |
| private final HashMap<Integer, Description> mTagMap = |
| new HashMap<Integer, Description>(); |
| |
| public EventLogTags() throws IOException { |
| this(new BufferedReader(new FileReader(TAGS_FILE), 256)); |
| } |
| |
| public EventLogTags(BufferedReader input) throws IOException { |
| String line; |
| while ((line = input.readLine()) != null) { |
| Matcher m = COMMENT_PATTERN.matcher(line); |
| if (m.matches()) continue; |
| |
| m = TAG_PATTERN.matcher(line); |
| if (m.matches()) { |
| try { |
| int tag = Integer.parseInt(m.group(1)); |
| Description d = new Description(tag, m.group(2)); |
| mNameMap.put(d.mName, d); |
| mTagMap.put(d.mTag, d); |
| } catch (NumberFormatException e) { |
| Log.e(TAG, "Error in event log tags entry: " + line, e); |
| } |
| } else { |
| Log.e(TAG, "Can't parse event log tags entry: " + line); |
| } |
| } |
| } |
| |
| public Description get(String name) { |
| return mNameMap.get(name); |
| } |
| |
| public Description get(int tag) { |
| return mTagMap.get(tag); |
| } |
| } |