mirror of git://gcc.gnu.org/git/gcc.git
84 lines
2.0 KiB
Java
84 lines
2.0 KiB
Java
// Connection.java - Implementation of URLConnection for gcjlib
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// protocol.
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/* Copyright (C) 2003 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package gnu.java.net.protocol.gcjlib;
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import java.io.InputStream;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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import gnu.gcj.Core;
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import gnu.gcj.runtime.SharedLibHelper;
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import gnu.java.net.protocol.core.CoreInputStream;
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/**
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* @author Tom Tromey <tromey@redhat.com>
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* @date January 10, 2003
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*/
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class Connection extends URLConnection
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{
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String solib;
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String name;
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Core core;
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public Connection (URL url) throws MalformedURLException
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{
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super (url);
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int index = url.getFile().indexOf ("!/");
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if (index == -1)
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throw new MalformedURLException ("couldn't find !/ in gcjlib URL");
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name = url.getFile().substring (index + 2);
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solib = url.getFile().substring (0, index);
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}
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public void connect() throws IOException
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{
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if (core != null)
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return;
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// We can't create a new SharedLibHelper here, since we don't know
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// what parent class loader to use.
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SharedLibHelper helper = SharedLibHelper.findHelper(solib);
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if (helper == null)
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throw new IOException("library not loaded: " + solib);
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core = helper.findCore(name);
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if (core == null)
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throw new IOException("couldn't find core object: " + name);
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}
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public InputStream getInputStream() throws IOException
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{
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connect();
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return new CoreInputStream(core);
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}
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public String getHeaderField(String field)
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{
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try
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{
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if (!connected)
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connect();
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if (field.equals("content-type"))
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return guessContentTypeFromName(name);
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else if (field.equals("content-length"))
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return Long.toString(core.length);
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}
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catch (IOException e)
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{
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// Fall through.
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}
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return null;
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}
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}
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