+++ /dev/null
-// URLStreamHandler.java - Superclass of all stream protocol handlers.
-
-/* Copyright (C) 1999, 2002 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package java.net;
-
-/**
- * @author Warren Levy <warrenl@cygnus.com>
- * @date March 4, 1999.
- */
-
-/**
- * Written using on-line Java Platform 1.2 API Specification, as well
- * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
- * Status: Believed complete and correct.
- */
-
-public abstract class URLStreamHandler
-{
- protected abstract URLConnection openConnection(URL u)
- throws java.io.IOException;
-
- protected void parseURL(URL u, String spec, int start, int limit)
- {
- String host = u.getHost();
- int port = u.getPort();
- String file = u.getFile();
-
- /* TBD: The JDK 1.2 doc specifically says that limit is the position
- * to stop parsing at and that it will be either the end of the string
- * or the position of '#'; thus the doc infers that this method does
- * not set the ref.
- */
- if (spec.regionMatches (start, "//", 0, 2))
- {
- int hostEnd;
- int colon;
-
- start += 2;
- int slash = spec.indexOf('/', start);
- if (slash >= 0)
- hostEnd = slash;
- else
- hostEnd = limit;
-
- host = spec.substring (start, hostEnd);
-
- // Look for optional port number. It is valid for the non-port
- // part of the host name to be null (e.g. a URL "http://:80").
- // TBD: JDK 1.2 in this case sets host to null rather than "";
- // this is undocumented and likely an unintended side effect in 1.2
- // so we'll be simple here and stick with "". Note that
- // "http://" or "http:///" produce a "" host in JDK 1.2.
- if ((colon = host.indexOf(':')) >= 0)
- {
- try
- {
- port = Integer.parseInt(host.substring(colon + 1));
- }
- catch (NumberFormatException e)
- {
- ; // Ignore invalid port values; port is already set to u's
- // port.
- }
- host = host.substring(0, colon);
- }
- file = null;
- start = hostEnd;
- }
- else if (host == null)
- host = "";
-
- if (start < limit && spec.charAt(start) == '/')
- {
- // This is an absolute path name; ignore any file context.
- file = spec.substring(start, limit);
- }
- else if (file == null || file.length() <= 0)
- {
- // No file context available; just spec for file.
- file = spec.substring(start, limit);
- }
- else if (start < limit)
- {
- // Context is available, but only override it if there is a new file.
- file = file.substring(0, file.lastIndexOf('/'))
- + '/' + spec.substring(start, limit);
- }
-
- u.set(u.getProtocol(), host, port, file, u.getRef());
- }
-
- private static String canonicalizeFilename(String file)
- {
- int index;
-
- // Replace "/./" with "/". This probably isn't very efficient in
- // the general case, but it's probably not bad most of the time.
- while ((index = file.indexOf("/./")) >= 0)
- file = file.substring(0, index) + file.substring(index + 2);
-
- // Process "/../" correctly. This probably isn't very efficient in
- // the general case, but it's probably not bad most of the time.
- while ((index = file.indexOf("/../")) >= 0)
- {
- // Strip of the previous directory - if it exists.
- int previous = file.lastIndexOf('/', index - 1);
- if (previous >= 0)
- file = file.substring(0, previous) + file.substring(index + 3);
- else
- break;
- }
- return file;
- }
-
- public boolean sameFile(URL url1, URL url2)
- {
- if (url1 == url2)
- return true;
- // This comparison is very conservative. It assumes that any
- // field can be null.
- if (url1 == null || url2 == null || url1.getPort() != url2.getPort())
- return false;
- String s1, s2;
- s1 = url1.getProtocol();
- s2 = url2.getProtocol();
- if (s1 != s2 && (s1 == null || ! s1.equals(s2)))
- return false;
- s1 = url1.getHost();
- s2 = url2.getHost();
- if (s1 != s2 && (s1 == null || ! s1.equals(s2)))
- return false;
- s1 = canonicalizeFilename(url1.getFile());
- s2 = canonicalizeFilename(url2.getFile());
- if (s1 != s2 && (s1 == null || ! s1.equals(s2)))
- return false;
- return true;
- }
-
- protected void setURL(URL u, String protocol, String host, int port,
- String file, String ref)
- {
- u.set(protocol, host, port, file, ref);
- }
-
- protected String toExternalForm(URL u)
- {
- String resStr, host, file, ref;
- int port;
-
- resStr = u.getProtocol() + ":";
- host = u.getHost();
- port = u.getPort();
- file = u.getFile();
- ref = u.getRef();
-
- // JDK 1.2 online doc infers that host could be null because it
- // explicitly states that file cannot be null, but is silent on host.
- //
- // Note that this produces different results from JDK 1.2 as JDK 1.2
- // ignores a non-default port if host is null or "". That is inconsistent
- // with the spec since the result of this method is spec'ed so it can be
- // used to construct a new URL that is equivalent to the original.
- if (host == null)
- host = "";
- if (port >= 0 || ! (host.length() == 0))
- resStr = resStr + "//" + host + (port < 0 ? "" : ":" + port);
-
- resStr = resStr + file;
-
- if (ref != null)
- resStr = resStr + "#" + ref;
-
- return resStr;
- }
-}
projects / msp430-gcc.git / blobdiff