1.1 --- a/emul/mini/src/main/java/java/net/URL.java Mon Feb 25 19:00:08 2013 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,1090 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle in the LICENSE file that accompanied this code.
1.13 - *
1.14 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 - * version 2 for more details (a copy is included in the LICENSE file that
1.18 - * accompanied this code).
1.19 - *
1.20 - * You should have received a copy of the GNU General Public License version
1.21 - * 2 along with this work; if not, write to the Free Software Foundation,
1.22 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 - *
1.24 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -
1.29 -package java.net;
1.30 -
1.31 -import java.io.ByteArrayInputStream;
1.32 -import java.io.IOException;
1.33 -import java.io.InputStream;
1.34 -import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.35 -
1.36 -
1.37 -/**
1.38 - * Class <code>URL</code> represents a Uniform Resource
1.39 - * Locator, a pointer to a "resource" on the World
1.40 - * Wide Web. A resource can be something as simple as a file or a
1.41 - * directory, or it can be a reference to a more complicated object,
1.42 - * such as a query to a database or to a search engine. More
1.43 - * information on the types of URLs and their formats can be found at:
1.44 - * <blockquote>
1.45 - * <a href="http://www.socs.uts.edu.au/MosaicDocs-old/url-primer.html">
1.46 - * <i>http://www.socs.uts.edu.au/MosaicDocs-old/url-primer.html</i></a>
1.47 - * </blockquote>
1.48 - * <p>
1.49 - * In general, a URL can be broken into several parts. The previous
1.50 - * example of a URL indicates that the protocol to use is
1.51 - * <code>http</code> (HyperText Transfer Protocol) and that the
1.52 - * information resides on a host machine named
1.53 - * <code>www.socs.uts.edu.au</code>. The information on that host
1.54 - * machine is named <code>/MosaicDocs-old/url-primer.html</code>. The exact
1.55 - * meaning of this name on the host machine is both protocol
1.56 - * dependent and host dependent. The information normally resides in
1.57 - * a file, but it could be generated on the fly. This component of
1.58 - * the URL is called the <i>path</i> component.
1.59 - * <p>
1.60 - * A URL can optionally specify a "port", which is the
1.61 - * port number to which the TCP connection is made on the remote host
1.62 - * machine. If the port is not specified, the default port for
1.63 - * the protocol is used instead. For example, the default port for
1.64 - * <code>http</code> is <code>80</code>. An alternative port could be
1.65 - * specified as:
1.66 - * <blockquote><pre>
1.67 - * http://www.socs.uts.edu.au:80/MosaicDocs-old/url-primer.html
1.68 - * </pre></blockquote>
1.69 - * <p>
1.70 - * The syntax of <code>URL</code> is defined by <a
1.71 - * href="http://www.ietf.org/rfc/rfc2396.txt"><i>RFC 2396: Uniform
1.72 - * Resource Identifiers (URI): Generic Syntax</i></a>, amended by <a
1.73 - * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format for
1.74 - * Literal IPv6 Addresses in URLs</i></a>. The Literal IPv6 address format
1.75 - * also supports scope_ids. The syntax and usage of scope_ids is described
1.76 - * <a href="Inet6Address.html#scoped">here</a>.
1.77 - * <p>
1.78 - * A URL may have appended to it a "fragment", also known
1.79 - * as a "ref" or a "reference". The fragment is indicated by the sharp
1.80 - * sign character "#" followed by more characters. For example,
1.81 - * <blockquote><pre>
1.82 - * http://java.sun.com/index.html#chapter1
1.83 - * </pre></blockquote>
1.84 - * <p>
1.85 - * This fragment is not technically part of the URL. Rather, it
1.86 - * indicates that after the specified resource is retrieved, the
1.87 - * application is specifically interested in that part of the
1.88 - * document that has the tag <code>chapter1</code> attached to it. The
1.89 - * meaning of a tag is resource specific.
1.90 - * <p>
1.91 - * An application can also specify a "relative URL",
1.92 - * which contains only enough information to reach the resource
1.93 - * relative to another URL. Relative URLs are frequently used within
1.94 - * HTML pages. For example, if the contents of the URL:
1.95 - * <blockquote><pre>
1.96 - * http://java.sun.com/index.html
1.97 - * </pre></blockquote>
1.98 - * contained within it the relative URL:
1.99 - * <blockquote><pre>
1.100 - * FAQ.html
1.101 - * </pre></blockquote>
1.102 - * it would be a shorthand for:
1.103 - * <blockquote><pre>
1.104 - * http://java.sun.com/FAQ.html
1.105 - * </pre></blockquote>
1.106 - * <p>
1.107 - * The relative URL need not specify all the components of a URL. If
1.108 - * the protocol, host name, or port number is missing, the value is
1.109 - * inherited from the fully specified URL. The file component must be
1.110 - * specified. The optional fragment is not inherited.
1.111 - * <p>
1.112 - * The URL class does not itself encode or decode any URL components
1.113 - * according to the escaping mechanism defined in RFC2396. It is the
1.114 - * responsibility of the caller to encode any fields, which need to be
1.115 - * escaped prior to calling URL, and also to decode any escaped fields,
1.116 - * that are returned from URL. Furthermore, because URL has no knowledge
1.117 - * of URL escaping, it does not recognise equivalence between the encoded
1.118 - * or decoded form of the same URL. For example, the two URLs:<br>
1.119 - * <pre> http://foo.com/hello world/ and http://foo.com/hello%20world</pre>
1.120 - * would be considered not equal to each other.
1.121 - * <p>
1.122 - * Note, the {@link java.net.URI} class does perform escaping of its
1.123 - * component fields in certain circumstances. The recommended way
1.124 - * to manage the encoding and decoding of URLs is to use {@link java.net.URI},
1.125 - * and to convert between these two classes using {@link #toURI()} and
1.126 - * {@link URI#toURL()}.
1.127 - * <p>
1.128 - * The {@link URLEncoder} and {@link URLDecoder} classes can also be
1.129 - * used, but only for HTML form encoding, which is not the same
1.130 - * as the encoding scheme defined in RFC2396.
1.131 - *
1.132 - * @author James Gosling
1.133 - * @since JDK1.0
1.134 - */
1.135 -public final class URL implements java.io.Serializable {
1.136 -
1.137 - static final long serialVersionUID = -7627629688361524110L;
1.138 -
1.139 - /**
1.140 - * The property which specifies the package prefix list to be scanned
1.141 - * for protocol handlers. The value of this property (if any) should
1.142 - * be a vertical bar delimited list of package names to search through
1.143 - * for a protocol handler to load. The policy of this class is that
1.144 - * all protocol handlers will be in a class called <protocolname>.Handler,
1.145 - * and each package in the list is examined in turn for a matching
1.146 - * handler. If none are found (or the property is not specified), the
1.147 - * default package prefix, sun.net.www.protocol, is used. The search
1.148 - * proceeds from the first package in the list to the last and stops
1.149 - * when a match is found.
1.150 - */
1.151 - private static final String protocolPathProp = "java.protocol.handler.pkgs";
1.152 -
1.153 - /**
1.154 - * The protocol to use (ftp, http, nntp, ... etc.) .
1.155 - * @serial
1.156 - */
1.157 - private String protocol;
1.158 -
1.159 - /**
1.160 - * The host name to connect to.
1.161 - * @serial
1.162 - */
1.163 - private String host;
1.164 -
1.165 - /**
1.166 - * The protocol port to connect to.
1.167 - * @serial
1.168 - */
1.169 - private int port = -1;
1.170 -
1.171 - /**
1.172 - * The specified file name on that host. <code>file</code> is
1.173 - * defined as <code>path[?query]</code>
1.174 - * @serial
1.175 - */
1.176 - private String file;
1.177 -
1.178 - /**
1.179 - * The query part of this URL.
1.180 - */
1.181 - private transient String query;
1.182 -
1.183 - /**
1.184 - * The authority part of this URL.
1.185 - * @serial
1.186 - */
1.187 - private String authority;
1.188 -
1.189 - /**
1.190 - * The path part of this URL.
1.191 - */
1.192 - private transient String path;
1.193 -
1.194 - /**
1.195 - * The userinfo part of this URL.
1.196 - */
1.197 - private transient String userInfo;
1.198 -
1.199 - /**
1.200 - * # reference.
1.201 - * @serial
1.202 - */
1.203 - private String ref;
1.204 -
1.205 - /**
1.206 - * The host's IP address, used in equals and hashCode.
1.207 - * Computed on demand. An uninitialized or unknown hostAddress is null.
1.208 - */
1.209 - transient Object hostAddress;
1.210 -
1.211 - /**
1.212 - * The URLStreamHandler for this URL.
1.213 - */
1.214 - transient URLStreamHandler handler;
1.215 -
1.216 - /* Our hash code.
1.217 - * @serial
1.218 - */
1.219 - private int hashCode = -1;
1.220 -
1.221 - /** input stream associated with the URL */
1.222 - private InputStream is;
1.223 -
1.224 - /**
1.225 - * Creates a <code>URL</code> object from the specified
1.226 - * <code>protocol</code>, <code>host</code>, <code>port</code>
1.227 - * number, and <code>file</code>.<p>
1.228 - *
1.229 - * <code>host</code> can be expressed as a host name or a literal
1.230 - * IP address. If IPv6 literal address is used, it should be
1.231 - * enclosed in square brackets (<tt>'['</tt> and <tt>']'</tt>), as
1.232 - * specified by <a
1.233 - * href="http://www.ietf.org/rfc/rfc2732.txt">RFC 2732</a>;
1.234 - * However, the literal IPv6 address format defined in <a
1.235 - * href="http://www.ietf.org/rfc/rfc2373.txt"><i>RFC 2373: IP
1.236 - * Version 6 Addressing Architecture</i></a> is also accepted.<p>
1.237 - *
1.238 - * Specifying a <code>port</code> number of <code>-1</code>
1.239 - * indicates that the URL should use the default port for the
1.240 - * protocol.<p>
1.241 - *
1.242 - * If this is the first URL object being created with the specified
1.243 - * protocol, a <i>stream protocol handler</i> object, an instance of
1.244 - * class <code>URLStreamHandler</code>, is created for that protocol:
1.245 - * <ol>
1.246 - * <li>If the application has previously set up an instance of
1.247 - * <code>URLStreamHandlerFactory</code> as the stream handler factory,
1.248 - * then the <code>createURLStreamHandler</code> method of that instance
1.249 - * is called with the protocol string as an argument to create the
1.250 - * stream protocol handler.
1.251 - * <li>If no <code>URLStreamHandlerFactory</code> has yet been set up,
1.252 - * or if the factory's <code>createURLStreamHandler</code> method
1.253 - * returns <code>null</code>, then the constructor finds the
1.254 - * value of the system property:
1.255 - * <blockquote><pre>
1.256 - * java.protocol.handler.pkgs
1.257 - * </pre></blockquote>
1.258 - * If the value of that system property is not <code>null</code>,
1.259 - * it is interpreted as a list of packages separated by a vertical
1.260 - * slash character '<code>|</code>'. The constructor tries to load
1.261 - * the class named:
1.262 - * <blockquote><pre>
1.263 - * <<i>package</i>>.<<i>protocol</i>>.Handler
1.264 - * </pre></blockquote>
1.265 - * where <<i>package</i>> is replaced by the name of the package
1.266 - * and <<i>protocol</i>> is replaced by the name of the protocol.
1.267 - * If this class does not exist, or if the class exists but it is not
1.268 - * a subclass of <code>URLStreamHandler</code>, then the next package
1.269 - * in the list is tried.
1.270 - * <li>If the previous step fails to find a protocol handler, then the
1.271 - * constructor tries to load from a system default package.
1.272 - * <blockquote><pre>
1.273 - * <<i>system default package</i>>.<<i>protocol</i>>.Handler
1.274 - * </pre></blockquote>
1.275 - * If this class does not exist, or if the class exists but it is not a
1.276 - * subclass of <code>URLStreamHandler</code>, then a
1.277 - * <code>MalformedURLException</code> is thrown.
1.278 - * </ol>
1.279 - *
1.280 - * <p>Protocol handlers for the following protocols are guaranteed
1.281 - * to exist on the search path :-
1.282 - * <blockquote><pre>
1.283 - * http, https, ftp, file, and jar
1.284 - * </pre></blockquote>
1.285 - * Protocol handlers for additional protocols may also be
1.286 - * available.
1.287 - *
1.288 - * <p>No validation of the inputs is performed by this constructor.
1.289 - *
1.290 - * @param protocol the name of the protocol to use.
1.291 - * @param host the name of the host.
1.292 - * @param port the port number on the host.
1.293 - * @param file the file on the host
1.294 - * @exception MalformedURLException if an unknown protocol is specified.
1.295 - * @see java.lang.System#getProperty(java.lang.String)
1.296 - * @see java.net.URL#setURLStreamHandlerFactory(
1.297 - * java.net.URLStreamHandlerFactory)
1.298 - * @see java.net.URLStreamHandler
1.299 - * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
1.300 - * java.lang.String)
1.301 - */
1.302 - public URL(String protocol, String host, int port, String file)
1.303 - throws MalformedURLException
1.304 - {
1.305 - this(protocol, host, port, file, null);
1.306 - }
1.307 -
1.308 - /**
1.309 - * Creates a URL from the specified <code>protocol</code>
1.310 - * name, <code>host</code> name, and <code>file</code> name. The
1.311 - * default port for the specified protocol is used.
1.312 - * <p>
1.313 - * This method is equivalent to calling the four-argument
1.314 - * constructor with the arguments being <code>protocol</code>,
1.315 - * <code>host</code>, <code>-1</code>, and <code>file</code>.
1.316 - *
1.317 - * No validation of the inputs is performed by this constructor.
1.318 - *
1.319 - * @param protocol the name of the protocol to use.
1.320 - * @param host the name of the host.
1.321 - * @param file the file on the host.
1.322 - * @exception MalformedURLException if an unknown protocol is specified.
1.323 - * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.324 - * int, java.lang.String)
1.325 - */
1.326 - public URL(String protocol, String host, String file)
1.327 - throws MalformedURLException {
1.328 - this(protocol, host, -1, file);
1.329 - }
1.330 -
1.331 - /**
1.332 - * Creates a <code>URL</code> object from the specified
1.333 - * <code>protocol</code>, <code>host</code>, <code>port</code>
1.334 - * number, <code>file</code>, and <code>handler</code>. Specifying
1.335 - * a <code>port</code> number of <code>-1</code> indicates that
1.336 - * the URL should use the default port for the protocol. Specifying
1.337 - * a <code>handler</code> of <code>null</code> indicates that the URL
1.338 - * should use a default stream handler for the protocol, as outlined
1.339 - * for:
1.340 - * java.net.URL#URL(java.lang.String, java.lang.String, int,
1.341 - * java.lang.String)
1.342 - *
1.343 - * <p>If the handler is not null and there is a security manager,
1.344 - * the security manager's <code>checkPermission</code>
1.345 - * method is called with a
1.346 - * <code>NetPermission("specifyStreamHandler")</code> permission.
1.347 - * This may result in a SecurityException.
1.348 - *
1.349 - * No validation of the inputs is performed by this constructor.
1.350 - *
1.351 - * @param protocol the name of the protocol to use.
1.352 - * @param host the name of the host.
1.353 - * @param port the port number on the host.
1.354 - * @param file the file on the host
1.355 - * @param handler the stream handler for the URL.
1.356 - * @exception MalformedURLException if an unknown protocol is specified.
1.357 - * @exception SecurityException
1.358 - * if a security manager exists and its
1.359 - * <code>checkPermission</code> method doesn't allow
1.360 - * specifying a stream handler explicitly.
1.361 - * @see java.lang.System#getProperty(java.lang.String)
1.362 - * @see java.net.URL#setURLStreamHandlerFactory(
1.363 - * java.net.URLStreamHandlerFactory)
1.364 - * @see java.net.URLStreamHandler
1.365 - * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
1.366 - * java.lang.String)
1.367 - * @see SecurityManager#checkPermission
1.368 - * @see java.net.NetPermission
1.369 - */
1.370 - public URL(String protocol, String host, int port, String file,
1.371 - URLStreamHandler handler) throws MalformedURLException {
1.372 - if (handler != null) {
1.373 - throw new SecurityException();
1.374 - }
1.375 -
1.376 - protocol = protocol.toLowerCase();
1.377 - this.protocol = protocol;
1.378 - if (host != null) {
1.379 -
1.380 - /**
1.381 - * if host is a literal IPv6 address,
1.382 - * we will make it conform to RFC 2732
1.383 - */
1.384 - if (host.indexOf(':') >= 0 && !host.startsWith("[")) {
1.385 - host = "["+host+"]";
1.386 - }
1.387 - this.host = host;
1.388 -
1.389 - if (port < -1) {
1.390 - throw new MalformedURLException("Invalid port number :" +
1.391 - port);
1.392 - }
1.393 - this.port = port;
1.394 - authority = (port == -1) ? host : host + ":" + port;
1.395 - }
1.396 -
1.397 - Parts parts = new Parts(file);
1.398 - path = parts.getPath();
1.399 - query = parts.getQuery();
1.400 -
1.401 - if (query != null) {
1.402 - this.file = path + "?" + query;
1.403 - } else {
1.404 - this.file = path;
1.405 - }
1.406 - ref = parts.getRef();
1.407 -
1.408 - // Note: we don't do validation of the URL here. Too risky to change
1.409 - // right now, but worth considering for future reference. -br
1.410 - if (handler == null &&
1.411 - (handler = getURLStreamHandler(protocol)) == null) {
1.412 - throw new MalformedURLException("unknown protocol: " + protocol);
1.413 - }
1.414 - this.handler = handler;
1.415 - }
1.416 -
1.417 - /**
1.418 - * Creates a <code>URL</code> object from the <code>String</code>
1.419 - * representation.
1.420 - * <p>
1.421 - * This constructor is equivalent to a call to the two-argument
1.422 - * constructor with a <code>null</code> first argument.
1.423 - *
1.424 - * @param spec the <code>String</code> to parse as a URL.
1.425 - * @exception MalformedURLException if no protocol is specified, or an
1.426 - * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.427 - * @see java.net.URL#URL(java.net.URL, java.lang.String)
1.428 - */
1.429 - public URL(String spec) throws MalformedURLException {
1.430 - this(null, spec);
1.431 - }
1.432 -
1.433 - private URL(String spec, InputStream is) throws MalformedURLException {
1.434 - this(null, spec);
1.435 - this.is = is;
1.436 - }
1.437 -
1.438 - /**
1.439 - * Creates a URL by parsing the given spec within a specified context.
1.440 - *
1.441 - * The new URL is created from the given context URL and the spec
1.442 - * argument as described in
1.443 - * RFC2396 "Uniform Resource Identifiers : Generic * Syntax" :
1.444 - * <blockquote><pre>
1.445 - * <scheme>://<authority><path>?<query>#<fragment>
1.446 - * </pre></blockquote>
1.447 - * The reference is parsed into the scheme, authority, path, query and
1.448 - * fragment parts. If the path component is empty and the scheme,
1.449 - * authority, and query components are undefined, then the new URL is a
1.450 - * reference to the current document. Otherwise, the fragment and query
1.451 - * parts present in the spec are used in the new URL.
1.452 - * <p>
1.453 - * If the scheme component is defined in the given spec and does not match
1.454 - * the scheme of the context, then the new URL is created as an absolute
1.455 - * URL based on the spec alone. Otherwise the scheme component is inherited
1.456 - * from the context URL.
1.457 - * <p>
1.458 - * If the authority component is present in the spec then the spec is
1.459 - * treated as absolute and the spec authority and path will replace the
1.460 - * context authority and path. If the authority component is absent in the
1.461 - * spec then the authority of the new URL will be inherited from the
1.462 - * context.
1.463 - * <p>
1.464 - * If the spec's path component begins with a slash character
1.465 - * "/" then the
1.466 - * path is treated as absolute and the spec path replaces the context path.
1.467 - * <p>
1.468 - * Otherwise, the path is treated as a relative path and is appended to the
1.469 - * context path, as described in RFC2396. Also, in this case,
1.470 - * the path is canonicalized through the removal of directory
1.471 - * changes made by occurences of ".." and ".".
1.472 - * <p>
1.473 - * For a more detailed description of URL parsing, refer to RFC2396.
1.474 - *
1.475 - * @param context the context in which to parse the specification.
1.476 - * @param spec the <code>String</code> to parse as a URL.
1.477 - * @exception MalformedURLException if no protocol is specified, or an
1.478 - * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.479 - * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.480 - * int, java.lang.String)
1.481 - * @see java.net.URLStreamHandler
1.482 - * @see java.net.URLStreamHandler#parseURL(java.net.URL,
1.483 - * java.lang.String, int, int)
1.484 - */
1.485 - public URL(URL context, String spec) throws MalformedURLException {
1.486 - this(context, spec, null);
1.487 - }
1.488 -
1.489 - /**
1.490 - * Creates a URL by parsing the given spec with the specified handler
1.491 - * within a specified context. If the handler is null, the parsing
1.492 - * occurs as with the two argument constructor.
1.493 - *
1.494 - * @param context the context in which to parse the specification.
1.495 - * @param spec the <code>String</code> to parse as a URL.
1.496 - * @param handler the stream handler for the URL.
1.497 - * @exception MalformedURLException if no protocol is specified, or an
1.498 - * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.499 - * @exception SecurityException
1.500 - * if a security manager exists and its
1.501 - * <code>checkPermission</code> method doesn't allow
1.502 - * specifying a stream handler.
1.503 - * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.504 - * int, java.lang.String)
1.505 - * @see java.net.URLStreamHandler
1.506 - * @see java.net.URLStreamHandler#parseURL(java.net.URL,
1.507 - * java.lang.String, int, int)
1.508 - */
1.509 - public URL(URL context, String spec, URLStreamHandler handler)
1.510 - throws MalformedURLException
1.511 - {
1.512 - this(findContext(context), spec, handler != null);
1.513 - }
1.514 -
1.515 - private URL(URL context, String spec, boolean ishandler)
1.516 - throws MalformedURLException {
1.517 - // Check for permission to specify a handler
1.518 - if (ishandler) {
1.519 - throw new SecurityException();
1.520 - }
1.521 - URLStreamHandler handler = null;
1.522 -
1.523 - String original = spec;
1.524 - int i, limit, c;
1.525 - int start = 0;
1.526 - String newProtocol = null;
1.527 - boolean aRef=false;
1.528 - boolean isRelative = false;
1.529 -
1.530 -
1.531 - try {
1.532 - limit = spec.length();
1.533 - while ((limit > 0) && (spec.charAt(limit - 1) <= ' ')) {
1.534 - limit--; //eliminate trailing whitespace
1.535 - }
1.536 - while ((start < limit) && (spec.charAt(start) <= ' ')) {
1.537 - start++; // eliminate leading whitespace
1.538 - }
1.539 -
1.540 - if (spec.regionMatches(true, start, "url:", 0, 4)) {
1.541 - start += 4;
1.542 - }
1.543 - if (start < spec.length() && spec.charAt(start) == '#') {
1.544 - /* we're assuming this is a ref relative to the context URL.
1.545 - * This means protocols cannot start w/ '#', but we must parse
1.546 - * ref URL's like: "hello:there" w/ a ':' in them.
1.547 - */
1.548 - aRef=true;
1.549 - }
1.550 - for (i = start ; !aRef && (i < limit) &&
1.551 - ((c = spec.charAt(i)) != '/') ; i++) {
1.552 - if (c == ':') {
1.553 -
1.554 - String s = spec.substring(start, i).toLowerCase();
1.555 - if (isValidProtocol(s)) {
1.556 - newProtocol = s;
1.557 - start = i + 1;
1.558 - }
1.559 - break;
1.560 - }
1.561 - }
1.562 -
1.563 - // Only use our context if the protocols match.
1.564 - protocol = newProtocol;
1.565 - if ((context != null) && ((newProtocol == null) ||
1.566 - newProtocol.equalsIgnoreCase(context.protocol))) {
1.567 - // inherit the protocol handler from the context
1.568 - // if not specified to the constructor
1.569 - if (handler == null) {
1.570 - handler = context.handler;
1.571 - }
1.572 -
1.573 - // If the context is a hierarchical URL scheme and the spec
1.574 - // contains a matching scheme then maintain backwards
1.575 - // compatibility and treat it as if the spec didn't contain
1.576 - // the scheme; see 5.2.3 of RFC2396
1.577 - if (context.path != null && context.path.startsWith("/"))
1.578 - newProtocol = null;
1.579 -
1.580 - if (newProtocol == null) {
1.581 - protocol = context.protocol;
1.582 - authority = context.authority;
1.583 - userInfo = context.userInfo;
1.584 - host = context.host;
1.585 - port = context.port;
1.586 - file = context.file;
1.587 - path = context.path;
1.588 - isRelative = true;
1.589 - }
1.590 - }
1.591 -
1.592 - if (protocol == null) {
1.593 - throw new MalformedURLException("no protocol: "+original);
1.594 - }
1.595 -
1.596 - // Get the protocol handler if not specified or the protocol
1.597 - // of the context could not be used
1.598 - if (handler == null &&
1.599 - (handler = getURLStreamHandler(protocol)) == null) {
1.600 - throw new MalformedURLException("unknown protocol: "+protocol);
1.601 - }
1.602 - this.handler = handler;
1.603 -
1.604 - i = spec.indexOf('#', start);
1.605 - if (i >= 0) {
1.606 -//thrw(protocol + " hnd: " + handler.getClass().getName() + " i: " + i);
1.607 - ref = spec.substring(i + 1, limit);
1.608 - limit = i;
1.609 - }
1.610 -
1.611 - /*
1.612 - * Handle special case inheritance of query and fragment
1.613 - * implied by RFC2396 section 5.2.2.
1.614 - */
1.615 - if (isRelative && start == limit) {
1.616 - query = context.query;
1.617 - if (ref == null) {
1.618 - ref = context.ref;
1.619 - }
1.620 - }
1.621 -
1.622 - handler.parseURL(this, spec, start, limit);
1.623 -
1.624 - } catch(MalformedURLException e) {
1.625 - throw e;
1.626 - } catch(Exception e) {
1.627 - MalformedURLException exception = new MalformedURLException(e.getMessage());
1.628 - exception.initCause(e);
1.629 - throw exception;
1.630 - }
1.631 - }
1.632 -
1.633 - /*
1.634 - * Returns true if specified string is a valid protocol name.
1.635 - */
1.636 - private boolean isValidProtocol(String protocol) {
1.637 - int len = protocol.length();
1.638 - if (len < 1)
1.639 - return false;
1.640 - char c = protocol.charAt(0);
1.641 - if (!Character.isLetter(c))
1.642 - return false;
1.643 - for (int i = 1; i < len; i++) {
1.644 - c = protocol.charAt(i);
1.645 - if (!Character.isLetterOrDigit(c) && c != '.' && c != '+' &&
1.646 - c != '-') {
1.647 - return false;
1.648 - }
1.649 - }
1.650 - return true;
1.651 - }
1.652 -
1.653 - /**
1.654 - * Sets the fields of the URL. This is not a public method so that
1.655 - * only URLStreamHandlers can modify URL fields. URLs are
1.656 - * otherwise constant.
1.657 - *
1.658 - * @param protocol the name of the protocol to use
1.659 - * @param host the name of the host
1.660 - @param port the port number on the host
1.661 - * @param file the file on the host
1.662 - * @param ref the internal reference in the URL
1.663 - */
1.664 - protected void set(String protocol, String host,
1.665 - int port, String file, String ref) {
1.666 - synchronized (this) {
1.667 - this.protocol = protocol;
1.668 - this.host = host;
1.669 - authority = port == -1 ? host : host + ":" + port;
1.670 - this.port = port;
1.671 - this.file = file;
1.672 - this.ref = ref;
1.673 - /* This is very important. We must recompute this after the
1.674 - * URL has been changed. */
1.675 - hashCode = -1;
1.676 - hostAddress = null;
1.677 - int q = file.lastIndexOf('?');
1.678 - if (q != -1) {
1.679 - query = file.substring(q+1);
1.680 - path = file.substring(0, q);
1.681 - } else
1.682 - path = file;
1.683 - }
1.684 - }
1.685 -
1.686 - /**
1.687 - * Sets the specified 8 fields of the URL. This is not a public method so
1.688 - * that only URLStreamHandlers can modify URL fields. URLs are otherwise
1.689 - * constant.
1.690 - *
1.691 - * @param protocol the name of the protocol to use
1.692 - * @param host the name of the host
1.693 - * @param port the port number on the host
1.694 - * @param authority the authority part for the url
1.695 - * @param userInfo the username and password
1.696 - * @param path the file on the host
1.697 - * @param ref the internal reference in the URL
1.698 - * @param query the query part of this URL
1.699 - * @since 1.3
1.700 - */
1.701 - protected void set(String protocol, String host, int port,
1.702 - String authority, String userInfo, String path,
1.703 - String query, String ref) {
1.704 - synchronized (this) {
1.705 - this.protocol = protocol;
1.706 - this.host = host;
1.707 - this.port = port;
1.708 - this.file = query == null ? path : path + "?" + query;
1.709 - this.userInfo = userInfo;
1.710 - this.path = path;
1.711 - this.ref = ref;
1.712 - /* This is very important. We must recompute this after the
1.713 - * URL has been changed. */
1.714 - hashCode = -1;
1.715 - hostAddress = null;
1.716 - this.query = query;
1.717 - this.authority = authority;
1.718 - }
1.719 - }
1.720 -
1.721 - /**
1.722 - * Gets the query part of this <code>URL</code>.
1.723 - *
1.724 - * @return the query part of this <code>URL</code>,
1.725 - * or <CODE>null</CODE> if one does not exist
1.726 - * @since 1.3
1.727 - */
1.728 - public String getQuery() {
1.729 - return query;
1.730 - }
1.731 -
1.732 - /**
1.733 - * Gets the path part of this <code>URL</code>.
1.734 - *
1.735 - * @return the path part of this <code>URL</code>, or an
1.736 - * empty string if one does not exist
1.737 - * @since 1.3
1.738 - */
1.739 - public String getPath() {
1.740 - return path;
1.741 - }
1.742 -
1.743 - /**
1.744 - * Gets the userInfo part of this <code>URL</code>.
1.745 - *
1.746 - * @return the userInfo part of this <code>URL</code>, or
1.747 - * <CODE>null</CODE> if one does not exist
1.748 - * @since 1.3
1.749 - */
1.750 - public String getUserInfo() {
1.751 - return userInfo;
1.752 - }
1.753 -
1.754 - /**
1.755 - * Gets the authority part of this <code>URL</code>.
1.756 - *
1.757 - * @return the authority part of this <code>URL</code>
1.758 - * @since 1.3
1.759 - */
1.760 - public String getAuthority() {
1.761 - return authority;
1.762 - }
1.763 -
1.764 - /**
1.765 - * Gets the port number of this <code>URL</code>.
1.766 - *
1.767 - * @return the port number, or -1 if the port is not set
1.768 - */
1.769 - public int getPort() {
1.770 - return port;
1.771 - }
1.772 -
1.773 - /**
1.774 - * Gets the default port number of the protocol associated
1.775 - * with this <code>URL</code>. If the URL scheme or the URLStreamHandler
1.776 - * for the URL do not define a default port number,
1.777 - * then -1 is returned.
1.778 - *
1.779 - * @return the port number
1.780 - * @since 1.4
1.781 - */
1.782 - public int getDefaultPort() {
1.783 - return handler.getDefaultPort();
1.784 - }
1.785 -
1.786 - /**
1.787 - * Gets the protocol name of this <code>URL</code>.
1.788 - *
1.789 - * @return the protocol of this <code>URL</code>.
1.790 - */
1.791 - public String getProtocol() {
1.792 - return protocol;
1.793 - }
1.794 -
1.795 - /**
1.796 - * Gets the host name of this <code>URL</code>, if applicable.
1.797 - * The format of the host conforms to RFC 2732, i.e. for a
1.798 - * literal IPv6 address, this method will return the IPv6 address
1.799 - * enclosed in square brackets (<tt>'['</tt> and <tt>']'</tt>).
1.800 - *
1.801 - * @return the host name of this <code>URL</code>.
1.802 - */
1.803 - public String getHost() {
1.804 - return host;
1.805 - }
1.806 -
1.807 - /**
1.808 - * Gets the file name of this <code>URL</code>.
1.809 - * The returned file portion will be
1.810 - * the same as <CODE>getPath()</CODE>, plus the concatenation of
1.811 - * the value of <CODE>getQuery()</CODE>, if any. If there is
1.812 - * no query portion, this method and <CODE>getPath()</CODE> will
1.813 - * return identical results.
1.814 - *
1.815 - * @return the file name of this <code>URL</code>,
1.816 - * or an empty string if one does not exist
1.817 - */
1.818 - public String getFile() {
1.819 - return file;
1.820 - }
1.821 -
1.822 - /**
1.823 - * Gets the anchor (also known as the "reference") of this
1.824 - * <code>URL</code>.
1.825 - *
1.826 - * @return the anchor (also known as the "reference") of this
1.827 - * <code>URL</code>, or <CODE>null</CODE> if one does not exist
1.828 - */
1.829 - public String getRef() {
1.830 - return ref;
1.831 - }
1.832 -
1.833 - /**
1.834 - * Compares this URL for equality with another object.<p>
1.835 - *
1.836 - * If the given object is not a URL then this method immediately returns
1.837 - * <code>false</code>.<p>
1.838 - *
1.839 - * Two URL objects are equal if they have the same protocol, reference
1.840 - * equivalent hosts, have the same port number on the host, and the same
1.841 - * file and fragment of the file.<p>
1.842 - *
1.843 - * Two hosts are considered equivalent if both host names can be resolved
1.844 - * into the same IP addresses; else if either host name can't be
1.845 - * resolved, the host names must be equal without regard to case; or both
1.846 - * host names equal to null.<p>
1.847 - *
1.848 - * Since hosts comparison requires name resolution, this operation is a
1.849 - * blocking operation. <p>
1.850 - *
1.851 - * Note: The defined behavior for <code>equals</code> is known to
1.852 - * be inconsistent with virtual hosting in HTTP.
1.853 - *
1.854 - * @param obj the URL to compare against.
1.855 - * @return <code>true</code> if the objects are the same;
1.856 - * <code>false</code> otherwise.
1.857 - */
1.858 - public boolean equals(Object obj) {
1.859 - if (!(obj instanceof URL))
1.860 - return false;
1.861 - URL u2 = (URL)obj;
1.862 -
1.863 - return handler.equals(this, u2);
1.864 - }
1.865 -
1.866 - /**
1.867 - * Creates an integer suitable for hash table indexing.<p>
1.868 - *
1.869 - * The hash code is based upon all the URL components relevant for URL
1.870 - * comparison. As such, this operation is a blocking operation.<p>
1.871 - *
1.872 - * @return a hash code for this <code>URL</code>.
1.873 - */
1.874 - public synchronized int hashCode() {
1.875 - if (hashCode != -1)
1.876 - return hashCode;
1.877 -
1.878 - hashCode = handler.hashCode(this);
1.879 - return hashCode;
1.880 - }
1.881 -
1.882 - /**
1.883 - * Compares two URLs, excluding the fragment component.<p>
1.884 - *
1.885 - * Returns <code>true</code> if this <code>URL</code> and the
1.886 - * <code>other</code> argument are equal without taking the
1.887 - * fragment component into consideration.
1.888 - *
1.889 - * @param other the <code>URL</code> to compare against.
1.890 - * @return <code>true</code> if they reference the same remote object;
1.891 - * <code>false</code> otherwise.
1.892 - */
1.893 - public boolean sameFile(URL other) {
1.894 - return handler.sameFile(this, other);
1.895 - }
1.896 -
1.897 - /**
1.898 - * Constructs a string representation of this <code>URL</code>. The
1.899 - * string is created by calling the <code>toExternalForm</code>
1.900 - * method of the stream protocol handler for this object.
1.901 - *
1.902 - * @return a string representation of this object.
1.903 - * @see java.net.URL#URL(java.lang.String, java.lang.String, int,
1.904 - * java.lang.String)
1.905 - * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
1.906 - */
1.907 - public String toString() {
1.908 - return toExternalForm();
1.909 - }
1.910 -
1.911 - /**
1.912 - * Constructs a string representation of this <code>URL</code>. The
1.913 - * string is created by calling the <code>toExternalForm</code>
1.914 - * method of the stream protocol handler for this object.
1.915 - *
1.916 - * @return a string representation of this object.
1.917 - * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.918 - * int, java.lang.String)
1.919 - * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
1.920 - */
1.921 - public String toExternalForm() {
1.922 - return handler.toExternalForm(this);
1.923 - }
1.924 -
1.925 - /**
1.926 - * Returns a {@link java.net.URLConnection URLConnection} instance that
1.927 - * represents a connection to the remote object referred to by the
1.928 - * {@code URL}.
1.929 - *
1.930 - * <P>A new instance of {@linkplain java.net.URLConnection URLConnection} is
1.931 - * created every time when invoking the
1.932 - * {@linkplain java.net.URLStreamHandler#openConnection(URL)
1.933 - * URLStreamHandler.openConnection(URL)} method of the protocol handler for
1.934 - * this URL.</P>
1.935 - *
1.936 - * <P>It should be noted that a URLConnection instance does not establish
1.937 - * the actual network connection on creation. This will happen only when
1.938 - * calling {@linkplain java.net.URLConnection#connect() URLConnection.connect()}.</P>
1.939 - *
1.940 - * <P>If for the URL's protocol (such as HTTP or JAR), there
1.941 - * exists a public, specialized URLConnection subclass belonging
1.942 - * to one of the following packages or one of their subpackages:
1.943 - * java.lang, java.io, java.util, java.net, the connection
1.944 - * returned will be of that subclass. For example, for HTTP an
1.945 - * HttpURLConnection will be returned, and for JAR a
1.946 - * JarURLConnection will be returned.</P>
1.947 - *
1.948 - * @return a {@link java.net.URLConnection URLConnection} linking
1.949 - * to the URL.
1.950 - * @exception IOException if an I/O exception occurs.
1.951 - * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.952 - * int, java.lang.String)
1.953 - */
1.954 -// public URLConnection openConnection() throws java.io.IOException {
1.955 -// return handler.openConnection(this);
1.956 -// }
1.957 -
1.958 -
1.959 - /**
1.960 - * Opens a connection to this <code>URL</code> and returns an
1.961 - * <code>InputStream</code> for reading from that connection. This
1.962 - * method is a shorthand for:
1.963 - * <blockquote><pre>
1.964 - * openConnection().getInputStream()
1.965 - * </pre></blockquote>
1.966 - *
1.967 - * @return an input stream for reading from the URL connection.
1.968 - * @exception IOException if an I/O exception occurs.
1.969 - * @see java.net.URL#openConnection()
1.970 - * @see java.net.URLConnection#getInputStream()
1.971 - */
1.972 - public final InputStream openStream() throws java.io.IOException {
1.973 - if (is != null) {
1.974 - return is;
1.975 - }
1.976 - byte[] arr = (byte[]) getContent(new Class[] { byte[].class });
1.977 - if (arr == null) {
1.978 - throw new IOException();
1.979 - }
1.980 - return new ByteArrayInputStream(arr);
1.981 - }
1.982 -
1.983 - /**
1.984 - * Gets the contents of this URL. This method is a shorthand for:
1.985 - * <blockquote><pre>
1.986 - * openConnection().getContent()
1.987 - * </pre></blockquote>
1.988 - *
1.989 - * @return the contents of this URL.
1.990 - * @exception IOException if an I/O exception occurs.
1.991 - * @see java.net.URLConnection#getContent()
1.992 - */
1.993 - public final Object getContent() throws java.io.IOException {
1.994 - return loadText(toExternalForm());
1.995 - }
1.996 -
1.997 - @JavaScriptBody(args = "url", body = ""
1.998 - + "var request = new XMLHttpRequest();\n"
1.999 - + "request.open('GET', url, false);\n"
1.1000 - + "request.send();\n"
1.1001 - + "return request.responseText;\n"
1.1002 - )
1.1003 - private static native String loadText(String url) throws IOException;
1.1004 -
1.1005 - @JavaScriptBody(args = { "url", "arr" }, body = ""
1.1006 - + "var request = new XMLHttpRequest();\n"
1.1007 - + "request.open('GET', url, false);\n"
1.1008 - + "request.overrideMimeType('text\\/plain; charset=x-user-defined');\n"
1.1009 - + "request.send();\n"
1.1010 - + "var t = request.responseText;\n"
1.1011 - + "for (var i = 0; i < t.length; i++) arr.push(t.charCodeAt(i) & 0xff);\n"
1.1012 - + "return arr;\n"
1.1013 - )
1.1014 - private static native Object loadBytes(String url, byte[] arr) throws IOException;
1.1015 -
1.1016 - /**
1.1017 - * Gets the contents of this URL. This method is a shorthand for:
1.1018 - * <blockquote><pre>
1.1019 - * openConnection().getContent(Class[])
1.1020 - * </pre></blockquote>
1.1021 - *
1.1022 - * @param classes an array of Java types
1.1023 - * @return the content object of this URL that is the first match of
1.1024 - * the types specified in the classes array.
1.1025 - * null if none of the requested types are supported.
1.1026 - * @exception IOException if an I/O exception occurs.
1.1027 - * @see java.net.URLConnection#getContent(Class[])
1.1028 - * @since 1.3
1.1029 - */
1.1030 - public final Object getContent(Class[] classes)
1.1031 - throws java.io.IOException {
1.1032 - for (Class<?> c : classes) {
1.1033 - if (c == String.class) {
1.1034 - return loadText(toExternalForm());
1.1035 - }
1.1036 - if (c == byte[].class) {
1.1037 - return loadBytes(toExternalForm(), new byte[0]);
1.1038 - }
1.1039 - }
1.1040 - return null;
1.1041 - }
1.1042 -
1.1043 - static URLStreamHandler getURLStreamHandler(String protocol) {
1.1044 - URLStreamHandler universal = new URLStreamHandler() {};
1.1045 - return universal;
1.1046 - }
1.1047 -
1.1048 - private static URL findContext(URL context) throws MalformedURLException {
1.1049 - if (context == null) {
1.1050 - String base = findBaseURL();
1.1051 - if (base != null) {
1.1052 - context = new URL(null, base, false);
1.1053 - }
1.1054 - }
1.1055 - return context;
1.1056 - }
1.1057 -
1.1058 - @JavaScriptBody(args = {}, body =
1.1059 - "if (typeof window !== 'object') return null;\n"
1.1060 - + "if (!window.location) return null;\n"
1.1061 - + "if (!window.location.href) return null;\n"
1.1062 - + "return window.location.href;\n"
1.1063 - )
1.1064 - private static native String findBaseURL();
1.1065 -}
1.1066 -class Parts {
1.1067 - String path, query, ref;
1.1068 -
1.1069 - Parts(String file) {
1.1070 - int ind = file.indexOf('#');
1.1071 - ref = ind < 0 ? null: file.substring(ind + 1);
1.1072 - file = ind < 0 ? file: file.substring(0, ind);
1.1073 - int q = file.lastIndexOf('?');
1.1074 - if (q != -1) {
1.1075 - query = file.substring(q+1);
1.1076 - path = file.substring(0, q);
1.1077 - } else {
1.1078 - path = file;
1.1079 - }
1.1080 - }
1.1081 -
1.1082 - String getPath() {
1.1083 - return path;
1.1084 - }
1.1085 -
1.1086 - String getQuery() {
1.1087 - return query;
1.1088 - }
1.1089 -
1.1090 - String getRef() {
1.1091 - return ref;
1.1092 - }
1.1093 -}