Imported GNU Classpath gcj-import-20051117.

* gnu/java/net/protocol/file/Connection.java: Removed, fully merged.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.

From-SVN: r107153

libjava/classpath/gnu/java/net/protocol/jar/Connection.java

@@ -47,7 +47,10 @@ import java.net.MalformedURLException;
 import java.net.ProtocolException;
 import java.net.URL;
 import java.net.URLConnection;
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.Hashtable;
+import java.util.Locale;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.zip.ZipFile;
@@ -60,6 +63,12 @@ import java.util.zip.ZipFile;
  */
 public final class Connection extends JarURLConnection
 {
+  /**
+   * HTTP-style DateFormat, used to format the last-modified header.
+   * Lazy initialized since jar files are used during bootstrapping.
+   */
+  private static SimpleDateFormat dateFormat;
+
   private JarFile jar_file;
   private JarEntry jar_entry;
   private URL jar_url;
@@ -82,7 +91,9 @@ public final class Connection extends JarURLConnection
 
       if ("file".equals (url.getProtocol()))
 	{
-	  File f = new File (url.getFile());
+	  String fn = url.getFile();
+	  fn = gnu.java.net.protocol.file.Connection.unquote(fn);
+	  File f = new File (fn);
 	  jf = new JarFile (f, true, ZipFile.OPEN_READ);
 	}
       else
@@ -165,6 +176,38 @@ public final class Connection extends JarURLConnection
     return jar_file;
   }
 
+  public String getHeaderField(String field)
+  {
+    try
+      {
+	if (!connected)
+	  connect();
+
+	if (field.equals("content-type"))
+          return guessContentTypeFromName(getJarEntry().getName());
+	else if (field.equals("content-length"))
+          return Long.toString(getJarEntry().getSize());
+	else if (field.equals("last-modified"))
+	  {
+	    // Both creating and manipulating dateFormat need synchronization.
+	    synchronized (this.getClass())
+	      {
+		if (dateFormat == null)
+		  dateFormat = new SimpleDateFormat
+		    ("EEE, dd MMM yyyy hh:mm:ss 'GMT'",
+		     new Locale ("En", "Us", "Unix"));
+
+        	return dateFormat.format(new Date(getJarEntry().getTime()));
+	      }
+	  }
+      }
+    catch (IOException e)
+      {
+        // Fall through.
+      }
+    return null;
+  }
+
   public int getContentLength()
   {
     if (!connected)
@@ -172,4 +215,19 @@ public final class Connection extends JarURLConnection
 
     return (int) jar_entry.getSize();
   }
+
+  public long getLastModified()
+  {
+    if (!connected)
+      return -1;
+
+    try
+      {
+	return getJarEntry().getTime();
+      }
+    catch (IOException e)
+      {
+	return -1;
+      }
+  }
 }