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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 import java.io.BufferedReader;
     18 import java.io.FileInputStream;
     19 import java.io.IOException;
     20 import java.io.InputStreamReader;
     21 import java.util.ArrayList;
     22 import java.util.List;
     23 
     24 /**
     25  * Parses and analyzes a log, pulling our PRELOAD information. If you have
     26  * an emulator or device running in the background, this class will use it
     27  * to measure and record the memory usage of each class.
     28  *
     29  * TODO: Should analyze lines and select substring dynamically (instead of hardcoded 19)
     30  */
     31 public class Compile {
     32 
     33     public static void main(String[] args) throws IOException {
     34         if (args.length != 2) {
     35             System.err.println("Usage: Compile [log file] [output file]");
     36             System.exit(0);
     37         }
     38 
     39         Root root = new Root();
     40 
     41         List<Record> records = new ArrayList<Record>();
     42 
     43         BufferedReader in = new BufferedReader(new InputStreamReader(
     44                 new FileInputStream(args[0])));
     45 
     46         String line;
     47         int lineNumber = 0;
     48         while ((line = in.readLine()) != null) {
     49             lineNumber++;
     50             if (line.startsWith("I/PRELOAD")) {
     51                 try {
     52                     String clipped = line.substring(19);
     53                     records.add(new Record(clipped, lineNumber));
     54                 } catch (RuntimeException e) {
     55                     throw new RuntimeException(
     56                             "Exception while recording line " + lineNumber + ": " + line, e);
     57                 }
     58             }
     59         }
     60 
     61         for (Record record : records) {
     62             root.indexProcess(record);
     63         }
     64 
     65         for (Record record : records) {
     66             root.indexClassOperation(record);
     67         }
     68 
     69         in.close();
     70 
     71         root.toFile(args[1]);
     72     }
     73 }
     74