fix for some improper details in kelondroDyn

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2104 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/kelondro/kelondroAbstractRA.java

@@ -44,6 +44,7 @@
 
 package de.anomic.kelondro;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.Enumeration;
 import java.util.Iterator;
@@ -80,7 +81,7 @@ abstract class kelondroAbstractRA implements kelondroRA {
             len -= r;
         }
     }
-    /*
+    
     public byte[] readFully() throws IOException {
         ByteArrayOutputStream dest = new ByteArrayOutputStream();
         byte[] buffer = new byte[1024];
@@ -94,7 +95,7 @@ abstract class kelondroAbstractRA implements kelondroRA {
         dest.close();
         return dest.toByteArray();
     }
-    */  
+    
     public byte readByte() throws IOException {
         final int ch = this.read();
         if (ch < 0) throw new IOException();

source/de/anomic/kelondro/kelondroDyn.java

@@ -349,11 +349,13 @@ public class kelondroDyn extends kelondroTree {
         }
 
         public int read(byte[] b, int off, int len) throws IOException {
-            byte[] buf = getDyn(filekey, seekpos, len);
+            int l = Math.min(b.length - off, len);
-            if (buf == null) return 0;
+            byte[] buf = getDyn(filekey, seekpos, l);
-            System.arraycopy(buf, 0, b, off, len);
+            if (buf == null) return -1;
-            seekpos += len;
+            l = Math.min(buf.length, l);
-            return len;
+            System.arraycopy(buf, 0, b, off, l);
+            seekpos += l;
+            return l;
         }
 
         public void write(byte[] b, int off, int len) throws IOException {