InputStreamReader.java (refill): Handle no-progress case correctly.

	* java/io/InputStreamReader.java (refill): Handle no-progress
	case correctly.
	* gnu/gcj/convert/IOConverter.java: Add 'utf8' alias.

From-SVN: r101663

libjava/ChangeLog

 2005-07-06  Tom Tromey  <tromey@redhat.com>
 
+	* java/io/InputStreamReader.java (refill): Handle no-progress
+	case correctly.
+	* gnu/gcj/convert/IOConverter.java: Add 'utf8' alias.
+
+2005-07-06  Tom Tromey  <tromey@redhat.com>
+
 	* testsuite/libjava.jacks/jacks.xfail: Removed 9.1.3-body-5.
 
 2005-07-05  Bryce McKinlay  <mckinlay@redhat.com>

libjava/gnu/gcj/convert/IOConverter.java

-/* Copyright (C) 2000, 2001  Free Software Foundation
+/* Copyright (C) 2000, 2001, 2005  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -28,6 +28,8 @@ public abstract class IOConverter
     // canonical name.
     hash.put ("iso-latin-1", "8859_1");
     hash.put ("iso8859_1", "8859_1");
+    // At least one build script out there uses 'utf8'.
+    hash.put ("utf8", "UTF8");
     // On Solaris the default encoding, as returned by nl_langinfo(),
     // is `646' (aka ASCII), but the Solaris iconv_open() doesn't
     // understand that.  We work around the problem by adding an

libjava/java/io/InputStreamReader.java

@@ -289,9 +289,23 @@ public class InputStreamReader extends Reader
 	  return -1;
 	converter.setInput(in.buf, in.pos, in.count);
 	int count = converter.read(buf, offset, length);
-	in.skip(converter.inpos - in.pos);
-	if (count > 0)
-	  return count;
+
+	// We might have bytes but not have made any progress.  In
+	// this case we try to refill.  If refilling fails, we assume
+	// we have a malformed character at the end of the stream.
+	if (count == 0 && converter.inpos == in.pos)
+	  {
+	    in.mark(in.count);
+	    if (! in.refill ())
+	      throw new CharConversionException ();
+	    in.reset();
+	  }
+	else
+	  {
+	    in.skip(converter.inpos - in.pos);
+	    if (count > 0)
+	      return count;
+	  }
       }
   }
 }