trunk/masters-pmf/java_speed_test/java/read_trace.java

   1 import java.io.*;
   2
   3 public class read_trace {
   4         public static void main(String[] args) {
   5                 int tmp = 0;
   6                 boolean print = false;
   7                 String filename = "";
   8
   9                 for(String s : args) {
  10                         if(s.equals("-p")) {
  11                                 print = true;
  12                         }
  13                         else {
  14                                 filename = s;
  15                         }
  16                 }
  17
  18                 if(filename.equals("")) {
  19                         System.out.println("error: no filename specified");
  20                         return;
  21                 }
  22
  23                 try {
  24                         FileInputStream file_input = new FileInputStream (filename);
  25                         BufferedInputStream buffered_input = new BufferedInputStream(file_input);
  26                         DataInputStream data_input = new DataInputStream (buffered_input);
  27
  28                         int timestamp;
  29                         short id;
  30                         byte length;
  31
  32                         while(true) {
  33                                 timestamp = data_input.readInt();
  34                                 id = data_input.readShort();
  35                                 length = data_input.readByte();
  36
  37                                 byte[] buf = new byte[length];
  38                                 data_input.readFully(buf, 0, length);
  39
  40
  41                                 ByteArrayInputStream eargs = new ByteArrayInputStream(buf);
  42                                 DataInputStream eargs_data = new DataInputStream (eargs);
  43
  44                                 /* read arg 1 (short) */
  45                                 short arg1 = eargs_data.readShort();
  46
  47                                 /* read arg 2 (string) */
  48                                 eargs_data.mark(10000);
  49                                 int strlen=0;
  50                                 while(eargs_data.readByte() != 0)
  51                                         strlen++;
  52                                 eargs_data.reset();
  53                                 byte[] arg2 = new byte[strlen];
  54                                 eargs_data.readFully(arg2, 0, strlen);
  55
  56                                 if(args.length>0 && args[0].equals("-p"))
  57                                         System.out.printf("timestamp %d id %d args=(short=%d string=\"%s\") %n", timestamp, id, arg1, new String(arg2));
  58                         }
  59
  60                 }
  61                 catch(IOException e) {
  62                         //System.out.println ("IO exception = " + e );
  63                         //e.printStackTrace();
  64                 }
  65
  66                 //file_input.close();
  67         }
  68 }