Re: byte array to string conversion

[Lars Andersen <lars at rimfaxe dot com>]

Tom Tromey wrote:

> > > > > > "Lars" == Lars Andersen <lars@rimfaxe.com> writes:
> > > > > >            
>
> Lars> Just tried it with the latest 3.4 snapshot. Same thing.
>
> I suspect your system's iconv(), or your locale setting, or both.
>
> Try debugging the program with gdb.  My theory is that the early
> `test_str.getBytes()' call is returning bad results.
>
> Tom
>  

I modified the example a bit.

This one works for both Sun jdk and GCJ.

Substitute "iso-8859-1" with "UTF-8" and only Sun jdk works (at least 
for me)

>>>>>>>>>>>>>>>>>>>>

public class TestStringConversion
{
   private static final int BYTE_RANGE = (1 + Byte.MAX_VALUE) - 
Byte.MIN_VALUE;
   private static byte[] allBytes = new byte[BYTE_RANGE];
   private static char[] byteToChars = new char[BYTE_RANGE];

   static
   {
      
       for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE; i++)
       {
           allBytes[i - Byte.MIN_VALUE] = (byte) i;
       }

    
       String allBytesString = "";
       try
       {
         allBytesString = new String(allBytes,0,Byte.MAX_VALUE - 
Byte.MIN_VALUE,"iso-8859-1");
       }
       catch (Exception e)
       { }
      
       int allBytesStringLen = allBytesString.length();

       for (int i = 0; (i < (Byte.MAX_VALUE - Byte.MIN_VALUE)) && (i < 
allBytesStringLen); i++)
       {
           byteToChars[i] = allBytesString.charAt(i);
       }
   }
  
   public TestStringConversion()
   {
   }
  
   /**
    * String conversion as found in com.mysql.jdbc.StringUtils
    */
   public static String toAsciiString(byte[] buffer, int startPos, int 
length)
   {
       char[] charArray = new char[length];
       int readpoint = startPos;
       for (int i = 0; i < length; i++)
       {
           charArray[i] = byteToChars[(int) buffer[readpoint] - 
Byte.MIN_VALUE];
           readpoint++;
       } 
       return new String(charArray);
   }
  

   public static void main(String[] args)
   { 
     
      String test_str = "Test String"; 
      byte[] test_buf = test_str.getBytes();
      System.out.println("toAsciiString -> "+toAsciiString(test_buf, 0, 
test_buf.length));
   }
  
}


<<<<<<<<<<<<<<<<<<<<

/Lars Andersen