package gnu.gcj.protocol.file;
import java.net.*;
import java.io.*;
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 File fileIn;
private InputStream inputStream;
private OutputStream outputStream;
public Connection(URL url)
{
super(url);
}
public void connect() throws IOException
{
if (connected)
return;
String fname = url.getFile();
fileIn = new File(fname);
if (doInput)
inputStream = new BufferedInputStream(new FileInputStream(fileIn));
if (doOutput)
outputStream = new BufferedOutputStream(new FileOutputStream(fileIn));
connected = true;
}
public InputStream getInputStream() throws IOException
{
if (! doInput)
throw new ProtocolException("Can't open InputStream if doInput is false");
if (!connected)
connect();
return inputStream;
}
public OutputStream getOutputStream() throws IOException
{
if (! doOutput)
throw new
ProtocolException("Can't open OutputStream if doOutput is false");
if (!connected)
connect();
return outputStream;
}
public String getHeaderField(String name)
{
try
{
getHeaders();
}
catch (IOException x)
{
return null;
}
return (String) hdrHash.get(name.toLowerCase());
}
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 = fileIn.length();
String line = "Content-length: " + len;
hdrVec.addElement(line);
String key = getKey(line);
hdrHash.put(key.toLowerCase(), Long.toString(len));
}
}