Connection.java (getJarFile): download and cache remote jar files.

	* gnu/gcj/protocol/jar/Connection.java (getJarFile): download and
	cache remote jar files.
	* gnu/gcj/runtime/VMClassLoader.java: Don't construct jar URL, only
	add File.separator to URL when it is a directory.
	* java/lang/ClassLoader.java: Add Classpath javadoc.
	(parent): final.
	(getParent): Add (disabled) security check.
	(findLibrary): New default method.
	* java/net/JarURLConnection.java (getManifest): Implement.
	(getInputStream): Only create InputStream when entry exists.
	(getHeaders): Only use jarFileURLConnection or JarEntry to set length
	when they exist.
	* java/net/URLClassLoader.java: New/Rewritten version from Classpath.

From-SVN: r59949

1 files changed, 14 insertions, 6 deletions

diff --git a/libjava/java/net/JarURLConnection.java b/libjava/java/net/JarURLConnection.java
index a90c7f3..6f4cd1f 100644
--- a/libjava/java/net/JarURLConnection.java
+++ b/libjava/java/net/JarURLConnection.java
@@ -134,7 +134,11 @@ public abstract class JarURLConnection extends URLConnection
     if (jarfile != null)
       {
 	// this is the easy way...
-	return jarfile.getInputStream (jarfile.getEntry (element));
+	ZipEntry entry = jarfile.getEntry(element);
+	if (entry != null)
+	  return jarfile.getInputStream (entry);
+	else
+	  return null;
       }
     else
       {
@@ -320,12 +324,17 @@ public abstract class JarURLConnection extends URLConnection
     // to add others later and for consistency, we'll implement it this way.
 
     // Add the only header we know about right now:  Content-length.
-    long len;
+    long len = -1;
 
     if (element == null)
-      len = jarFileURLConnection.getContentLength ();
+      if (jarFileURLConnection != null)
+	len = jarFileURLConnection.getContentLength ();
     else
-      len = getJarEntry ().getSize ();
+      {
+	JarEntry entry = getJarEntry();
+	if (entry != null)
+	  len = entry.getSize ();
+      }
 
     String line = "Content-length: " + len;
     hdrVec.addElement(line);
@@ -381,7 +390,6 @@ public abstract class JarURLConnection extends URLConnection
   {
     JarFile file = getJarFile ();
 
-    // FIXME: implement this
-    return null;
+    return (file != null) ? file.getManifest() : null;
   }
 }