2004-05-04 Michael Koch <konqueror@gmx.de>

	* java/nio/ByteBuffer.java,
	java/nio/CharBuffer.java,
	java/nio/DoubleBuffer.java,
	java/nio/FloatBuffer.java,
	java/nio/IntBuffer.java,
	java/nio/LongBuffer.java,
	java/nio/ShortBuffer.java:
	(compareTo): Fixed bogus implementation in all buffer classes.

From-SVN: r81489

7 files changed, 132 insertions, 167 deletions

diff --git a/libjava/java/nio/ByteBuffer.java b/libjava/java/nio/ByteBuffer.java
index 276b2db..8b43da5 100644
--- a/libjava/java/nio/ByteBuffer.java
+++ b/libjava/java/nio/ByteBuffer.java
@@ -293,32 +293,27 @@ public abstract class ByteBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    ByteBuffer a = (ByteBuffer) obj;
+    ByteBuffer other = (ByteBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+        byte a = get(pos_this++);
+	byte b = other.get(pos_other++);
+      	 
+	if (a == b)
+	  continue;
+      	   
+	if (a < b)
+	  return -1;
+      	   
+	return 1;
       }
-
-    return 0;
+      
+    return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/CharBuffer.java b/libjava/java/nio/CharBuffer.java
index 3d488ba..416ca83 100644
--- a/libjava/java/nio/CharBuffer.java
+++ b/libjava/java/nio/CharBuffer.java
@@ -1,5 +1,5 @@
 /* CharBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -310,32 +310,27 @@ public abstract class CharBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    CharBuffer a = (CharBuffer) obj;
+    CharBuffer other = (CharBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+	 char a = get(pos_this++);
+	 char b = other.get(pos_other++);
+      	 
+	 if (a == b)
+	   continue;
+      	   
+	 if (a < b)
+	   return -1;
+      	   
+	 return 1;
       }
-
-    return 0;
+      
+     return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/DoubleBuffer.java b/libjava/java/nio/DoubleBuffer.java
index d669c21..1ad8bae 100644
--- a/libjava/java/nio/DoubleBuffer.java
+++ b/libjava/java/nio/DoubleBuffer.java
@@ -1,5 +1,5 @@
 /* DoubleBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -265,32 +265,27 @@ public abstract class DoubleBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    DoubleBuffer a = (DoubleBuffer) obj;
+    DoubleBuffer other = (DoubleBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+	double a = get(pos_this++);
+	double b = other.get(pos_other++);
+      	 
+	if (a == b)
+	  continue;
+      	   
+	if (a < b)
+	  return -1;
+      	   
+	return 1;
       }
-
-    return 0;
+      
+    return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/FloatBuffer.java b/libjava/java/nio/FloatBuffer.java
index 0c7b04d..ab87b7f 100644
--- a/libjava/java/nio/FloatBuffer.java
+++ b/libjava/java/nio/FloatBuffer.java
@@ -1,5 +1,5 @@
 /* FloatBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -265,32 +265,27 @@ public abstract class FloatBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    FloatBuffer a = (FloatBuffer) obj;
+    FloatBuffer other = (FloatBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+	float a = get(pos_this++);
+	float b = other.get(pos_other++);
+      	 
+	if (a == b)
+	  continue;
+      	   
+	if (a < b)
+	  return -1;
+      	   
+	return 1;
       }
-
-    return 0;
+      
+    return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/IntBuffer.java b/libjava/java/nio/IntBuffer.java
index 469a344..52d822a 100644
--- a/libjava/java/nio/IntBuffer.java
+++ b/libjava/java/nio/IntBuffer.java
@@ -1,5 +1,5 @@
 /* IntBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -265,32 +265,27 @@ public abstract class IntBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    IntBuffer a = (IntBuffer) obj;
+    IntBuffer other = (IntBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+      	 int a = get(pos_this++);
+      	 int b = other.get(pos_other++);
+      	 
+      	 if (a == b)
+      	   continue;
+      	   
+      	 if (a < b)
+      	   return -1;
+      	   
+      	 return 1;
       }
-
-    return 0;
+      
+     return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/LongBuffer.java b/libjava/java/nio/LongBuffer.java
index 712e0b3..1b420eb 100644
--- a/libjava/java/nio/LongBuffer.java
+++ b/libjava/java/nio/LongBuffer.java
@@ -1,5 +1,5 @@
 /* LongBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -265,32 +265,27 @@ public abstract class LongBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    LongBuffer a = (LongBuffer) obj;
+    LongBuffer other = (LongBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+	 long a = get(pos_this++);
+	 long b = other.get(pos_other++);
+      	 
+	 if (a == b)
+	   continue;
+      	   
+	 if (a < b)
+	   return -1;
+      	   
+	 return 1;
       }
-
-    return 0;
+      
+     return remaining() - other.remaining();
   }
 
   /**
diff --git a/libjava/java/nio/ShortBuffer.java b/libjava/java/nio/ShortBuffer.java
index 61097d0..9f54276 100644
--- a/libjava/java/nio/ShortBuffer.java
+++ b/libjava/java/nio/ShortBuffer.java
@@ -1,5 +1,5 @@
 /* ShortBuffer.java -- 
-   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
@@ -265,32 +265,27 @@ public abstract class ShortBuffer extends Buffer
    */
   public int compareTo (Object obj)
   {
-    ShortBuffer a = (ShortBuffer) obj;
+    ShortBuffer other = (ShortBuffer) obj;
 
-    if (a.remaining () != remaining ())
-      return 1;
-
-    if (! hasArray () ||
-        ! a.hasArray ())
-      {
-        return 1;
-      }
-
-    int r = remaining ();
-    int i1 = position ();
-    int i2 = a.position ();
-
-    for (int i = 0; i < r; i++)
+    int num = Math.min(remaining(), other.remaining());
+    int pos_this = position();
+    int pos_other = other.position();
+    
+    for (int count = 0; count < num; count++)
       {
-        int t = (int) (get (i1) - a.get (i2));
-
-        if (t != 0)
-          {
-            return (int) t;
-          }
+	 short a = get(pos_this++);
+	 short b = other.get(pos_other++);
+      	 
+	 if (a == b)
+	   continue;
+      	   
+	 if (a < b)
+	   return -1;
+      	   
+	 return 1;
       }
-
-    return 0;
+      
+     return remaining() - other.remaining();
   }
 
   /**