1 files changed, 127 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/MeteredInputStream.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/MeteredInputStream.java
new file mode 100644
index 000000000..330e4b20f
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/keyring/MeteredInputStream.java
@@ -0,0 +1,127 @@
+/* MeteredInputStream.java -- 
+   Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.javax.crypto.keyring;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+final class MeteredInputStream
+    extends FilterInputStream
+{
+  private int count;
+  private final int limit;
+
+  MeteredInputStream(InputStream in, int limit)
+  {
+    super(in);
+    if (limit < 0)
+      throw new IllegalArgumentException("limit must be nonnegative");
+    this.limit = limit;
+    count = 0;
+  }
+
+  /**
+   * Tests if the number of bytes read has reached the limit.
+   * 
+   * @return True if the limit has been reached.
+   */
+  public boolean limitReached()
+  {
+    return count == limit;
+  }
+
+  public int available() throws IOException
+  {
+    return Math.min(in.available(), limit - count);
+  }
+
+  public void close() throws IOException
+  {
+    in.close();
+  }
+
+  public void mark(int readLimit)
+  {
+  }
+
+  public boolean markSupported()
+  {
+    return false;
+  }
+
+  public int read() throws IOException
+  {
+    if (limitReached())
+      return -1;
+    int i = in.read();
+    if (i != -1)
+      count++;
+    return i;
+  }
+
+  public int read(byte[] buf) throws IOException
+  {
+    return read(buf, 0, buf.length);
+  }
+
+  public int read(byte[] buf, int off, int len) throws IOException
+  {
+    if (limitReached())
+      return -1;
+    int i = in.read(buf, off, Math.min(len, limit - count));
+    if (i != -1)
+      count += i;
+    return i;
+  }
+
+  public void reset() throws IOException
+  {
+  }
+
+  public long skip(long len) throws IOException
+  {
+    if (limitReached())
+      return 0L;
+    len = Math.min(len, limit - count);
+    len = in.skip(len);
+    count += (int) len;
+    return len;
+  }
+}