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80 lines
2.6 KiB
Java
80 lines
2.6 KiB
Java
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/* VMURLConnection - VM code for URLConnection
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.net;
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import gnu.classpath.Configuration;
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import java.io.IOException;
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import java.io.InputStream;
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final class VMURLConnection
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{
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public static final int LENGTH = 1024;
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static
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{
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if (Configuration.INIT_LOAD_LIBRARY)
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System.loadLibrary("javanet");
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init();
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}
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private static native void init();
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private static native String guessContentTypeFromBuffer(byte[] b, int valid);
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/**
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* This is called from URLConnection to guess the mime type of a
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* stream. This method may return null to indicate that it could
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* not guess a type.
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*/
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static String guessContentTypeFromStream(InputStream is)
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throws IOException
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{
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if (! is.markSupported())
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return null;
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is.mark(LENGTH);
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byte[] bytes = new byte[LENGTH];
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int r = is.read(bytes);
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if (r < 0)
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return null;
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is.reset();
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return guessContentTypeFromBuffer(bytes, r);
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}
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}
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