package gnu.java.net.protocol.core;
import gnu.gcj.Core;
import java.io.InputStream;
import java.io.IOException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
class Connection extends URLConnection
{
private Hashtable hdrHash = new Hashtable();
private Vector hdrVec = new Vector();
private boolean gotHeaders = false;
private Core core;
public Connection (URL url)
{
super(url);
}
public void connect() throws IOException
{
if (connected)
return;
core = Core.create (url.getFile());
connected = true;
}
public InputStream getInputStream() throws IOException
{
if (!connected)
connect();
if (! doInput)
throw new ProtocolException("Can't open InputStream if doInput is false");
return new CoreInputStream (core);
}
public String getHeaderField(String name)
{
try
{
getHeaders();
}
catch (IOException x)
{
return null;
}
return (String) hdrHash.get(name.toLowerCase());
}
public Map getHeaderFields()
{
try
{
getHeaders();
}
catch (IOException x)
{
return null;
}
return hdrHash;
}
public String getHeaderField(int n)
{
try
{
getHeaders();
}
catch (IOException x)
{
return null;
}
if (n < hdrVec.size())
return getField ((String) hdrVec.elementAt(n));
return null;
}
public String getHeaderFieldKey(int n)
{
try
{
getHeaders();
}
catch (IOException x)
{
return null;
}
if (n < hdrVec.size())
return getKey ((String) hdrVec.elementAt(n));
return null;
}
private String getKey(String str)
{
if (str == null)
return null;
int index = str.indexOf(':');
if (index >= 0)
return str.substring(0, index);
else
return null;
}
private String getField(String str)
{
if (str == null)
return null;
int index = str.indexOf(':');
if (index >= 0)
return str.substring(index + 1).trim();
else
return str;
}
private void getHeaders() throws IOException
{
if (gotHeaders)
return;
gotHeaders = true;
connect();
long len = core.length;
String line = "Content-length: " + len;
hdrVec.addElement(line);
String key = getKey(line);
hdrHash.put(key.toLowerCase(), Long.toString(len));
}
}