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  1. JDK
  2. JDK-4418975

RFE :Include InputStreamTokenizer

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    Details

    • Type: Enhancement
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 1.3.0
    • Fix Version/s: None
    • Component/s: core-libs
    • Labels:
    • Subcomponent:
    • CPU:
      generic
    • OS:
      generic

      Description



      Name: ssT124754 Date: 02/26/2001


      Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
      Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)


      It struck me as odd several years ago that there is no InputStreamTokenizer in
      the java.util package. I see that as of yet it has not been added, and would
      like to suggest its addition as soon as possible. The code follows:

      package java.util;

      import java.io.InputStream;
      import java.io.IOException;

      public class InputStreamTokenizer
      {

          private InputStream in;
          private String delimit;
          private StringTokenizer tok;

          public InputStreamTokenizer(InputStream i, String del)
          {
              in = i;
      delimit = del;
      try {
      readData();
      }
      catch (IOException e) {
      tok = new StringTokenizer("","");
      }
          }

          private void readData() throws IOException
          {
      String buf = "";
      byte b[] = new byte[1];
      Character bb;
      if(in.available() > 0) {
                  in.read(b);
      bb = new Character((char)b[0]);
      boolean keepit = !charIsDelimit(bb);
                  while((buf.length() == 0 || keepit) && in.available() > 0) {
      if(keepit) buf += bb;
      in.read(b);
      bb = new Character((char)b[0]);
      keepit = !charIsDelimit(bb);
      }
      }
      tok = new StringTokenizer(buf, delimit);
          }

          private boolean charIsDelimit(Character bb)
          {
      for(int i=0; i<delimit.length(); i++)
      {
      if(bb.charValue() == delimit.charAt(i)) return true;
      }
      return false;
          }

          public boolean hasMoreTokens()
          {
      try {
      if(tok.hasMoreElements()) return true;
      else if(in.available() <= 0) return false;
      readData();
      return tok.hasMoreElements();
      }
      catch (IOException e) {
      System.out.println("Error reading stream: " + e);
      return false;
      }
         }

          public Object nextToken() throws NoSuchElementException
          {
      try {
      if(tok.hasMoreElements()) return tok.nextElement();
      else if(in.available() <= 0) {
      throw new NoSuchElementException();
      }
      readData();
      return tok.nextElement();
      }
      catch (IOException e) {
                  throw new NoSuchElementException();
      }
          }

          /* for test purposes */
          public static void main(String args[])
          {
      FileInputStream fin = null;
      try {
      fin = new FileInputStream(args[0]);
      }
      catch (FileNotFoundException e) {
      System.out.println("File not found: " + e);
      }
      InputStreamTokenizer tok = new InputStreamTokenizer(fin, " \n\t");
      while(tok.hasMoreTokens()) {
      System.out.println("NEXT TOKEN:\t" + tok.nextToken());
      }
          }

      }
      (Review ID: 117649)
      ======================================================================

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              Assignee:
              kkladkosunw Konstantin Kladko (Inactive)
              Reporter:
              ssultanasunw Shaheen Sultana (Inactive)
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