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+/* VMURLConnection - VM code for URLConnection
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is 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, 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; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, 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 java.net;
+
+import gnu.classpath.Configuration;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+final class VMURLConnection
+{
+ public static final int LENGTH = 1024;
+
+ static
+ {
+ if (Configuration.INIT_LOAD_LIBRARY)
+ System.loadLibrary("javanet");
+ init();
+ }
+
+ private static native void init();
+
+ private static native String guessContentTypeFromBuffer(byte[] b, int valid);
+
+ /**
+ * This is called from URLConnection to guess the mime type of a
+ * stream. This method may return null to indicate that it could
+ * not guess a type.
+ */
+ static String guessContentTypeFromStream(InputStream is)
+ throws IOException
+ {
+ if (! is.markSupported())
+ return null;
+ is.mark(LENGTH);
+ byte[] bytes = new byte[LENGTH];
+ int r = is.read(bytes);
+ if (r < 0)
+ return null;
+ is.reset();
+ return guessContentTypeFromBuffer(bytes, r);
+ }
+}