1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/emul/mini/src/main/java/java/net/URL.java Wed Jan 23 20:39:23 2013 +0100
1.3 @@ -0,0 +1,1037 @@
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.IOException;
1.32 +import java.io.InputStream;
1.33 +import org.apidesign.bck2brwsr.core.JavaScriptBody;
1.34 +
1.35 +/**
1.36 + * Class <code>URL</code> represents a Uniform Resource
1.37 + * Locator, a pointer to a "resource" on the World
1.38 + * Wide Web. A resource can be something as simple as a file or a
1.39 + * directory, or it can be a reference to a more complicated object,
1.40 + * such as a query to a database or to a search engine. More
1.41 + * information on the types of URLs and their formats can be found at:
1.42 + * <blockquote>
1.43 + * <a href="http://www.socs.uts.edu.au/MosaicDocs-old/url-primer.html">
1.44 + * <i>http://www.socs.uts.edu.au/MosaicDocs-old/url-primer.html</i></a>
1.45 + * </blockquote>
1.46 + * <p>
1.47 + * In general, a URL can be broken into several parts. The previous
1.48 + * example of a URL indicates that the protocol to use is
1.49 + * <code>http</code> (HyperText Transfer Protocol) and that the
1.50 + * information resides on a host machine named
1.51 + * <code>www.socs.uts.edu.au</code>. The information on that host
1.52 + * machine is named <code>/MosaicDocs-old/url-primer.html</code>. The exact
1.53 + * meaning of this name on the host machine is both protocol
1.54 + * dependent and host dependent. The information normally resides in
1.55 + * a file, but it could be generated on the fly. This component of
1.56 + * the URL is called the <i>path</i> component.
1.57 + * <p>
1.58 + * A URL can optionally specify a "port", which is the
1.59 + * port number to which the TCP connection is made on the remote host
1.60 + * machine. If the port is not specified, the default port for
1.61 + * the protocol is used instead. For example, the default port for
1.62 + * <code>http</code> is <code>80</code>. An alternative port could be
1.63 + * specified as:
1.64 + * <blockquote><pre>
1.65 + * http://www.socs.uts.edu.au:80/MosaicDocs-old/url-primer.html
1.66 + * </pre></blockquote>
1.67 + * <p>
1.68 + * The syntax of <code>URL</code> is defined by <a
1.69 + * href="http://www.ietf.org/rfc/rfc2396.txt"><i>RFC 2396: Uniform
1.70 + * Resource Identifiers (URI): Generic Syntax</i></a>, amended by <a
1.71 + * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format for
1.72 + * Literal IPv6 Addresses in URLs</i></a>. The Literal IPv6 address format
1.73 + * also supports scope_ids. The syntax and usage of scope_ids is described
1.74 + * <a href="Inet6Address.html#scoped">here</a>.
1.75 + * <p>
1.76 + * A URL may have appended to it a "fragment", also known
1.77 + * as a "ref" or a "reference". The fragment is indicated by the sharp
1.78 + * sign character "#" followed by more characters. For example,
1.79 + * <blockquote><pre>
1.80 + * http://java.sun.com/index.html#chapter1
1.81 + * </pre></blockquote>
1.82 + * <p>
1.83 + * This fragment is not technically part of the URL. Rather, it
1.84 + * indicates that after the specified resource is retrieved, the
1.85 + * application is specifically interested in that part of the
1.86 + * document that has the tag <code>chapter1</code> attached to it. The
1.87 + * meaning of a tag is resource specific.
1.88 + * <p>
1.89 + * An application can also specify a "relative URL",
1.90 + * which contains only enough information to reach the resource
1.91 + * relative to another URL. Relative URLs are frequently used within
1.92 + * HTML pages. For example, if the contents of the URL:
1.93 + * <blockquote><pre>
1.94 + * http://java.sun.com/index.html
1.95 + * </pre></blockquote>
1.96 + * contained within it the relative URL:
1.97 + * <blockquote><pre>
1.98 + * FAQ.html
1.99 + * </pre></blockquote>
1.100 + * it would be a shorthand for:
1.101 + * <blockquote><pre>
1.102 + * http://java.sun.com/FAQ.html
1.103 + * </pre></blockquote>
1.104 + * <p>
1.105 + * The relative URL need not specify all the components of a URL. If
1.106 + * the protocol, host name, or port number is missing, the value is
1.107 + * inherited from the fully specified URL. The file component must be
1.108 + * specified. The optional fragment is not inherited.
1.109 + * <p>
1.110 + * The URL class does not itself encode or decode any URL components
1.111 + * according to the escaping mechanism defined in RFC2396. It is the
1.112 + * responsibility of the caller to encode any fields, which need to be
1.113 + * escaped prior to calling URL, and also to decode any escaped fields,
1.114 + * that are returned from URL. Furthermore, because URL has no knowledge
1.115 + * of URL escaping, it does not recognise equivalence between the encoded
1.116 + * or decoded form of the same URL. For example, the two URLs:<br>
1.117 + * <pre> http://foo.com/hello world/ and http://foo.com/hello%20world</pre>
1.118 + * would be considered not equal to each other.
1.119 + * <p>
1.120 + * Note, the {@link java.net.URI} class does perform escaping of its
1.121 + * component fields in certain circumstances. The recommended way
1.122 + * to manage the encoding and decoding of URLs is to use {@link java.net.URI},
1.123 + * and to convert between these two classes using {@link #toURI()} and
1.124 + * {@link URI#toURL()}.
1.125 + * <p>
1.126 + * The {@link URLEncoder} and {@link URLDecoder} classes can also be
1.127 + * used, but only for HTML form encoding, which is not the same
1.128 + * as the encoding scheme defined in RFC2396.
1.129 + *
1.130 + * @author James Gosling
1.131 + * @since JDK1.0
1.132 + */
1.133 +public final class URL implements java.io.Serializable {
1.134 +
1.135 + static final long serialVersionUID = -7627629688361524110L;
1.136 +
1.137 + /**
1.138 + * The property which specifies the package prefix list to be scanned
1.139 + * for protocol handlers. The value of this property (if any) should
1.140 + * be a vertical bar delimited list of package names to search through
1.141 + * for a protocol handler to load. The policy of this class is that
1.142 + * all protocol handlers will be in a class called <protocolname>.Handler,
1.143 + * and each package in the list is examined in turn for a matching
1.144 + * handler. If none are found (or the property is not specified), the
1.145 + * default package prefix, sun.net.www.protocol, is used. The search
1.146 + * proceeds from the first package in the list to the last and stops
1.147 + * when a match is found.
1.148 + */
1.149 + private static final String protocolPathProp = "java.protocol.handler.pkgs";
1.150 +
1.151 + /**
1.152 + * The protocol to use (ftp, http, nntp, ... etc.) .
1.153 + * @serial
1.154 + */
1.155 + private String protocol;
1.156 +
1.157 + /**
1.158 + * The host name to connect to.
1.159 + * @serial
1.160 + */
1.161 + private String host;
1.162 +
1.163 + /**
1.164 + * The protocol port to connect to.
1.165 + * @serial
1.166 + */
1.167 + private int port = -1;
1.168 +
1.169 + /**
1.170 + * The specified file name on that host. <code>file</code> is
1.171 + * defined as <code>path[?query]</code>
1.172 + * @serial
1.173 + */
1.174 + private String file;
1.175 +
1.176 + /**
1.177 + * The query part of this URL.
1.178 + */
1.179 + private transient String query;
1.180 +
1.181 + /**
1.182 + * The authority part of this URL.
1.183 + * @serial
1.184 + */
1.185 + private String authority;
1.186 +
1.187 + /**
1.188 + * The path part of this URL.
1.189 + */
1.190 + private transient String path;
1.191 +
1.192 + /**
1.193 + * The userinfo part of this URL.
1.194 + */
1.195 + private transient String userInfo;
1.196 +
1.197 + /**
1.198 + * # reference.
1.199 + * @serial
1.200 + */
1.201 + private String ref;
1.202 +
1.203 + /**
1.204 + * The host's IP address, used in equals and hashCode.
1.205 + * Computed on demand. An uninitialized or unknown hostAddress is null.
1.206 + */
1.207 + transient Object hostAddress;
1.208 +
1.209 + /**
1.210 + * The URLStreamHandler for this URL.
1.211 + */
1.212 + transient URLStreamHandler handler;
1.213 +
1.214 + /* Our hash code.
1.215 + * @serial
1.216 + */
1.217 + private int hashCode = -1;
1.218 +
1.219 + /**
1.220 + * Creates a <code>URL</code> object from the specified
1.221 + * <code>protocol</code>, <code>host</code>, <code>port</code>
1.222 + * number, and <code>file</code>.<p>
1.223 + *
1.224 + * <code>host</code> can be expressed as a host name or a literal
1.225 + * IP address. If IPv6 literal address is used, it should be
1.226 + * enclosed in square brackets (<tt>'['</tt> and <tt>']'</tt>), as
1.227 + * specified by <a
1.228 + * href="http://www.ietf.org/rfc/rfc2732.txt">RFC 2732</a>;
1.229 + * However, the literal IPv6 address format defined in <a
1.230 + * href="http://www.ietf.org/rfc/rfc2373.txt"><i>RFC 2373: IP
1.231 + * Version 6 Addressing Architecture</i></a> is also accepted.<p>
1.232 + *
1.233 + * Specifying a <code>port</code> number of <code>-1</code>
1.234 + * indicates that the URL should use the default port for the
1.235 + * protocol.<p>
1.236 + *
1.237 + * If this is the first URL object being created with the specified
1.238 + * protocol, a <i>stream protocol handler</i> object, an instance of
1.239 + * class <code>URLStreamHandler</code>, is created for that protocol:
1.240 + * <ol>
1.241 + * <li>If the application has previously set up an instance of
1.242 + * <code>URLStreamHandlerFactory</code> as the stream handler factory,
1.243 + * then the <code>createURLStreamHandler</code> method of that instance
1.244 + * is called with the protocol string as an argument to create the
1.245 + * stream protocol handler.
1.246 + * <li>If no <code>URLStreamHandlerFactory</code> has yet been set up,
1.247 + * or if the factory's <code>createURLStreamHandler</code> method
1.248 + * returns <code>null</code>, then the constructor finds the
1.249 + * value of the system property:
1.250 + * <blockquote><pre>
1.251 + * java.protocol.handler.pkgs
1.252 + * </pre></blockquote>
1.253 + * If the value of that system property is not <code>null</code>,
1.254 + * it is interpreted as a list of packages separated by a vertical
1.255 + * slash character '<code>|</code>'. The constructor tries to load
1.256 + * the class named:
1.257 + * <blockquote><pre>
1.258 + * <<i>package</i>>.<<i>protocol</i>>.Handler
1.259 + * </pre></blockquote>
1.260 + * where <<i>package</i>> is replaced by the name of the package
1.261 + * and <<i>protocol</i>> is replaced by the name of the protocol.
1.262 + * If this class does not exist, or if the class exists but it is not
1.263 + * a subclass of <code>URLStreamHandler</code>, then the next package
1.264 + * in the list is tried.
1.265 + * <li>If the previous step fails to find a protocol handler, then the
1.266 + * constructor tries to load from a system default package.
1.267 + * <blockquote><pre>
1.268 + * <<i>system default package</i>>.<<i>protocol</i>>.Handler
1.269 + * </pre></blockquote>
1.270 + * If this class does not exist, or if the class exists but it is not a
1.271 + * subclass of <code>URLStreamHandler</code>, then a
1.272 + * <code>MalformedURLException</code> is thrown.
1.273 + * </ol>
1.274 + *
1.275 + * <p>Protocol handlers for the following protocols are guaranteed
1.276 + * to exist on the search path :-
1.277 + * <blockquote><pre>
1.278 + * http, https, ftp, file, and jar
1.279 + * </pre></blockquote>
1.280 + * Protocol handlers for additional protocols may also be
1.281 + * available.
1.282 + *
1.283 + * <p>No validation of the inputs is performed by this constructor.
1.284 + *
1.285 + * @param protocol the name of the protocol to use.
1.286 + * @param host the name of the host.
1.287 + * @param port the port number on the host.
1.288 + * @param file the file on the host
1.289 + * @exception MalformedURLException if an unknown protocol is specified.
1.290 + * @see java.lang.System#getProperty(java.lang.String)
1.291 + * @see java.net.URL#setURLStreamHandlerFactory(
1.292 + * java.net.URLStreamHandlerFactory)
1.293 + * @see java.net.URLStreamHandler
1.294 + * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
1.295 + * java.lang.String)
1.296 + */
1.297 + public URL(String protocol, String host, int port, String file)
1.298 + throws MalformedURLException
1.299 + {
1.300 + this(protocol, host, port, file, null);
1.301 + }
1.302 +
1.303 + /**
1.304 + * Creates a URL from the specified <code>protocol</code>
1.305 + * name, <code>host</code> name, and <code>file</code> name. The
1.306 + * default port for the specified protocol is used.
1.307 + * <p>
1.308 + * This method is equivalent to calling the four-argument
1.309 + * constructor with the arguments being <code>protocol</code>,
1.310 + * <code>host</code>, <code>-1</code>, and <code>file</code>.
1.311 + *
1.312 + * No validation of the inputs is performed by this constructor.
1.313 + *
1.314 + * @param protocol the name of the protocol to use.
1.315 + * @param host the name of the host.
1.316 + * @param file the file on the host.
1.317 + * @exception MalformedURLException if an unknown protocol is specified.
1.318 + * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.319 + * int, java.lang.String)
1.320 + */
1.321 + public URL(String protocol, String host, String file)
1.322 + throws MalformedURLException {
1.323 + this(protocol, host, -1, file);
1.324 + }
1.325 +
1.326 + /**
1.327 + * Creates a <code>URL</code> object from the specified
1.328 + * <code>protocol</code>, <code>host</code>, <code>port</code>
1.329 + * number, <code>file</code>, and <code>handler</code>. Specifying
1.330 + * a <code>port</code> number of <code>-1</code> indicates that
1.331 + * the URL should use the default port for the protocol. Specifying
1.332 + * a <code>handler</code> of <code>null</code> indicates that the URL
1.333 + * should use a default stream handler for the protocol, as outlined
1.334 + * for:
1.335 + * java.net.URL#URL(java.lang.String, java.lang.String, int,
1.336 + * java.lang.String)
1.337 + *
1.338 + * <p>If the handler is not null and there is a security manager,
1.339 + * the security manager's <code>checkPermission</code>
1.340 + * method is called with a
1.341 + * <code>NetPermission("specifyStreamHandler")</code> permission.
1.342 + * This may result in a SecurityException.
1.343 + *
1.344 + * No validation of the inputs is performed by this constructor.
1.345 + *
1.346 + * @param protocol the name of the protocol to use.
1.347 + * @param host the name of the host.
1.348 + * @param port the port number on the host.
1.349 + * @param file the file on the host
1.350 + * @param handler the stream handler for the URL.
1.351 + * @exception MalformedURLException if an unknown protocol is specified.
1.352 + * @exception SecurityException
1.353 + * if a security manager exists and its
1.354 + * <code>checkPermission</code> method doesn't allow
1.355 + * specifying a stream handler explicitly.
1.356 + * @see java.lang.System#getProperty(java.lang.String)
1.357 + * @see java.net.URL#setURLStreamHandlerFactory(
1.358 + * java.net.URLStreamHandlerFactory)
1.359 + * @see java.net.URLStreamHandler
1.360 + * @see java.net.URLStreamHandlerFactory#createURLStreamHandler(
1.361 + * java.lang.String)
1.362 + * @see SecurityManager#checkPermission
1.363 + * @see java.net.NetPermission
1.364 + */
1.365 + public URL(String protocol, String host, int port, String file,
1.366 + URLStreamHandler handler) throws MalformedURLException {
1.367 + if (handler != null) {
1.368 + throw new SecurityException();
1.369 + }
1.370 +
1.371 + protocol = protocol.toLowerCase();
1.372 + this.protocol = protocol;
1.373 + if (host != null) {
1.374 +
1.375 + /**
1.376 + * if host is a literal IPv6 address,
1.377 + * we will make it conform to RFC 2732
1.378 + */
1.379 + if (host.indexOf(':') >= 0 && !host.startsWith("[")) {
1.380 + host = "["+host+"]";
1.381 + }
1.382 + this.host = host;
1.383 +
1.384 + if (port < -1) {
1.385 + throw new MalformedURLException("Invalid port number :" +
1.386 + port);
1.387 + }
1.388 + this.port = port;
1.389 + authority = (port == -1) ? host : host + ":" + port;
1.390 + }
1.391 +
1.392 + Parts parts = new Parts(file);
1.393 + path = parts.getPath();
1.394 + query = parts.getQuery();
1.395 +
1.396 + if (query != null) {
1.397 + this.file = path + "?" + query;
1.398 + } else {
1.399 + this.file = path;
1.400 + }
1.401 + ref = parts.getRef();
1.402 +
1.403 + // Note: we don't do validation of the URL here. Too risky to change
1.404 + // right now, but worth considering for future reference. -br
1.405 + if (handler == null &&
1.406 + (handler = getURLStreamHandler(protocol)) == null) {
1.407 + throw new MalformedURLException("unknown protocol: " + protocol);
1.408 + }
1.409 + this.handler = handler;
1.410 + }
1.411 +
1.412 + /**
1.413 + * Creates a <code>URL</code> object from the <code>String</code>
1.414 + * representation.
1.415 + * <p>
1.416 + * This constructor is equivalent to a call to the two-argument
1.417 + * constructor with a <code>null</code> first argument.
1.418 + *
1.419 + * @param spec the <code>String</code> to parse as a URL.
1.420 + * @exception MalformedURLException if no protocol is specified, or an
1.421 + * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.422 + * @see java.net.URL#URL(java.net.URL, java.lang.String)
1.423 + */
1.424 + public URL(String spec) throws MalformedURLException {
1.425 + this(null, spec);
1.426 + }
1.427 +
1.428 + /**
1.429 + * Creates a URL by parsing the given spec within a specified context.
1.430 + *
1.431 + * The new URL is created from the given context URL and the spec
1.432 + * argument as described in
1.433 + * RFC2396 "Uniform Resource Identifiers : Generic * Syntax" :
1.434 + * <blockquote><pre>
1.435 + * <scheme>://<authority><path>?<query>#<fragment>
1.436 + * </pre></blockquote>
1.437 + * The reference is parsed into the scheme, authority, path, query and
1.438 + * fragment parts. If the path component is empty and the scheme,
1.439 + * authority, and query components are undefined, then the new URL is a
1.440 + * reference to the current document. Otherwise, the fragment and query
1.441 + * parts present in the spec are used in the new URL.
1.442 + * <p>
1.443 + * If the scheme component is defined in the given spec and does not match
1.444 + * the scheme of the context, then the new URL is created as an absolute
1.445 + * URL based on the spec alone. Otherwise the scheme component is inherited
1.446 + * from the context URL.
1.447 + * <p>
1.448 + * If the authority component is present in the spec then the spec is
1.449 + * treated as absolute and the spec authority and path will replace the
1.450 + * context authority and path. If the authority component is absent in the
1.451 + * spec then the authority of the new URL will be inherited from the
1.452 + * context.
1.453 + * <p>
1.454 + * If the spec's path component begins with a slash character
1.455 + * "/" then the
1.456 + * path is treated as absolute and the spec path replaces the context path.
1.457 + * <p>
1.458 + * Otherwise, the path is treated as a relative path and is appended to the
1.459 + * context path, as described in RFC2396. Also, in this case,
1.460 + * the path is canonicalized through the removal of directory
1.461 + * changes made by occurences of ".." and ".".
1.462 + * <p>
1.463 + * For a more detailed description of URL parsing, refer to RFC2396.
1.464 + *
1.465 + * @param context the context in which to parse the specification.
1.466 + * @param spec the <code>String</code> to parse as a URL.
1.467 + * @exception MalformedURLException if no protocol is specified, or an
1.468 + * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.469 + * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.470 + * int, java.lang.String)
1.471 + * @see java.net.URLStreamHandler
1.472 + * @see java.net.URLStreamHandler#parseURL(java.net.URL,
1.473 + * java.lang.String, int, int)
1.474 + */
1.475 + public URL(URL context, String spec) throws MalformedURLException {
1.476 + this(context, spec, null);
1.477 + }
1.478 +
1.479 + /**
1.480 + * Creates a URL by parsing the given spec with the specified handler
1.481 + * within a specified context. If the handler is null, the parsing
1.482 + * occurs as with the two argument constructor.
1.483 + *
1.484 + * @param context the context in which to parse the specification.
1.485 + * @param spec the <code>String</code> to parse as a URL.
1.486 + * @param handler the stream handler for the URL.
1.487 + * @exception MalformedURLException if no protocol is specified, or an
1.488 + * unknown protocol is found, or <tt>spec</tt> is <tt>null</tt>.
1.489 + * @exception SecurityException
1.490 + * if a security manager exists and its
1.491 + * <code>checkPermission</code> method doesn't allow
1.492 + * specifying a stream handler.
1.493 + * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.494 + * int, java.lang.String)
1.495 + * @see java.net.URLStreamHandler
1.496 + * @see java.net.URLStreamHandler#parseURL(java.net.URL,
1.497 + * java.lang.String, int, int)
1.498 + */
1.499 + public URL(URL context, String spec, URLStreamHandler handler)
1.500 + throws MalformedURLException
1.501 + {
1.502 + String original = spec;
1.503 + int i, limit, c;
1.504 + int start = 0;
1.505 + String newProtocol = null;
1.506 + boolean aRef=false;
1.507 + boolean isRelative = false;
1.508 +
1.509 + // Check for permission to specify a handler
1.510 + if (handler != null) {
1.511 + throw new SecurityException();
1.512 + }
1.513 +
1.514 + try {
1.515 + limit = spec.length();
1.516 + while ((limit > 0) && (spec.charAt(limit - 1) <= ' ')) {
1.517 + limit--; //eliminate trailing whitespace
1.518 + }
1.519 + while ((start < limit) && (spec.charAt(start) <= ' ')) {
1.520 + start++; // eliminate leading whitespace
1.521 + }
1.522 +
1.523 + if (spec.regionMatches(true, start, "url:", 0, 4)) {
1.524 + start += 4;
1.525 + }
1.526 + if (start < spec.length() && spec.charAt(start) == '#') {
1.527 + /* we're assuming this is a ref relative to the context URL.
1.528 + * This means protocols cannot start w/ '#', but we must parse
1.529 + * ref URL's like: "hello:there" w/ a ':' in them.
1.530 + */
1.531 + aRef=true;
1.532 + }
1.533 + for (i = start ; !aRef && (i < limit) &&
1.534 + ((c = spec.charAt(i)) != '/') ; i++) {
1.535 + if (c == ':') {
1.536 +
1.537 + String s = spec.substring(start, i).toLowerCase();
1.538 + if (isValidProtocol(s)) {
1.539 + newProtocol = s;
1.540 + start = i + 1;
1.541 + }
1.542 + break;
1.543 + }
1.544 + }
1.545 +
1.546 + // Only use our context if the protocols match.
1.547 + protocol = newProtocol;
1.548 + if ((context != null) && ((newProtocol == null) ||
1.549 + newProtocol.equalsIgnoreCase(context.protocol))) {
1.550 + // inherit the protocol handler from the context
1.551 + // if not specified to the constructor
1.552 + if (handler == null) {
1.553 + handler = context.handler;
1.554 + }
1.555 +
1.556 + // If the context is a hierarchical URL scheme and the spec
1.557 + // contains a matching scheme then maintain backwards
1.558 + // compatibility and treat it as if the spec didn't contain
1.559 + // the scheme; see 5.2.3 of RFC2396
1.560 + if (context.path != null && context.path.startsWith("/"))
1.561 + newProtocol = null;
1.562 +
1.563 + if (newProtocol == null) {
1.564 + protocol = context.protocol;
1.565 + authority = context.authority;
1.566 + userInfo = context.userInfo;
1.567 + host = context.host;
1.568 + port = context.port;
1.569 + file = context.file;
1.570 + path = context.path;
1.571 + isRelative = true;
1.572 + }
1.573 + }
1.574 +
1.575 + if (protocol == null) {
1.576 + throw new MalformedURLException("no protocol: "+original);
1.577 + }
1.578 +
1.579 + // Get the protocol handler if not specified or the protocol
1.580 + // of the context could not be used
1.581 + if (handler == null &&
1.582 + (handler = getURLStreamHandler(protocol)) == null) {
1.583 + throw new MalformedURLException("unknown protocol: "+protocol);
1.584 + }
1.585 + this.handler = handler;
1.586 +
1.587 + i = spec.indexOf('#', start);
1.588 + if (i >= 0) {
1.589 +//thrw(protocol + " hnd: " + handler.getClass().getName() + " i: " + i);
1.590 + ref = spec.substring(i + 1, limit);
1.591 + limit = i;
1.592 + }
1.593 +
1.594 + /*
1.595 + * Handle special case inheritance of query and fragment
1.596 + * implied by RFC2396 section 5.2.2.
1.597 + */
1.598 + if (isRelative && start == limit) {
1.599 + query = context.query;
1.600 + if (ref == null) {
1.601 + ref = context.ref;
1.602 + }
1.603 + }
1.604 +
1.605 + handler.parseURL(this, spec, start, limit);
1.606 +
1.607 + } catch(MalformedURLException e) {
1.608 + throw e;
1.609 + } catch(Exception e) {
1.610 + MalformedURLException exception = new MalformedURLException(e.getMessage());
1.611 + exception.initCause(e);
1.612 + throw exception;
1.613 + }
1.614 + }
1.615 +
1.616 + /*
1.617 + * Returns true if specified string is a valid protocol name.
1.618 + */
1.619 + private boolean isValidProtocol(String protocol) {
1.620 + int len = protocol.length();
1.621 + if (len < 1)
1.622 + return false;
1.623 + char c = protocol.charAt(0);
1.624 + if (!Character.isLetter(c))
1.625 + return false;
1.626 + for (int i = 1; i < len; i++) {
1.627 + c = protocol.charAt(i);
1.628 + if (!Character.isLetterOrDigit(c) && c != '.' && c != '+' &&
1.629 + c != '-') {
1.630 + return false;
1.631 + }
1.632 + }
1.633 + return true;
1.634 + }
1.635 +
1.636 + /**
1.637 + * Sets the fields of the URL. This is not a public method so that
1.638 + * only URLStreamHandlers can modify URL fields. URLs are
1.639 + * otherwise constant.
1.640 + *
1.641 + * @param protocol the name of the protocol to use
1.642 + * @param host the name of the host
1.643 + @param port the port number on the host
1.644 + * @param file the file on the host
1.645 + * @param ref the internal reference in the URL
1.646 + */
1.647 + protected void set(String protocol, String host,
1.648 + int port, String file, String ref) {
1.649 + synchronized (this) {
1.650 + this.protocol = protocol;
1.651 + this.host = host;
1.652 + authority = port == -1 ? host : host + ":" + port;
1.653 + this.port = port;
1.654 + this.file = file;
1.655 + this.ref = ref;
1.656 + /* This is very important. We must recompute this after the
1.657 + * URL has been changed. */
1.658 + hashCode = -1;
1.659 + hostAddress = null;
1.660 + int q = file.lastIndexOf('?');
1.661 + if (q != -1) {
1.662 + query = file.substring(q+1);
1.663 + path = file.substring(0, q);
1.664 + } else
1.665 + path = file;
1.666 + }
1.667 + }
1.668 +
1.669 + /**
1.670 + * Sets the specified 8 fields of the URL. This is not a public method so
1.671 + * that only URLStreamHandlers can modify URL fields. URLs are otherwise
1.672 + * constant.
1.673 + *
1.674 + * @param protocol the name of the protocol to use
1.675 + * @param host the name of the host
1.676 + * @param port the port number on the host
1.677 + * @param authority the authority part for the url
1.678 + * @param userInfo the username and password
1.679 + * @param path the file on the host
1.680 + * @param ref the internal reference in the URL
1.681 + * @param query the query part of this URL
1.682 + * @since 1.3
1.683 + */
1.684 + protected void set(String protocol, String host, int port,
1.685 + String authority, String userInfo, String path,
1.686 + String query, String ref) {
1.687 + synchronized (this) {
1.688 + this.protocol = protocol;
1.689 + this.host = host;
1.690 + this.port = port;
1.691 + this.file = query == null ? path : path + "?" + query;
1.692 + this.userInfo = userInfo;
1.693 + this.path = path;
1.694 + this.ref = ref;
1.695 + /* This is very important. We must recompute this after the
1.696 + * URL has been changed. */
1.697 + hashCode = -1;
1.698 + hostAddress = null;
1.699 + this.query = query;
1.700 + this.authority = authority;
1.701 + }
1.702 + }
1.703 +
1.704 + /**
1.705 + * Gets the query part of this <code>URL</code>.
1.706 + *
1.707 + * @return the query part of this <code>URL</code>,
1.708 + * or <CODE>null</CODE> if one does not exist
1.709 + * @since 1.3
1.710 + */
1.711 + public String getQuery() {
1.712 + return query;
1.713 + }
1.714 +
1.715 + /**
1.716 + * Gets the path part of this <code>URL</code>.
1.717 + *
1.718 + * @return the path part of this <code>URL</code>, or an
1.719 + * empty string if one does not exist
1.720 + * @since 1.3
1.721 + */
1.722 + public String getPath() {
1.723 + return path;
1.724 + }
1.725 +
1.726 + /**
1.727 + * Gets the userInfo part of this <code>URL</code>.
1.728 + *
1.729 + * @return the userInfo part of this <code>URL</code>, or
1.730 + * <CODE>null</CODE> if one does not exist
1.731 + * @since 1.3
1.732 + */
1.733 + public String getUserInfo() {
1.734 + return userInfo;
1.735 + }
1.736 +
1.737 + /**
1.738 + * Gets the authority part of this <code>URL</code>.
1.739 + *
1.740 + * @return the authority part of this <code>URL</code>
1.741 + * @since 1.3
1.742 + */
1.743 + public String getAuthority() {
1.744 + return authority;
1.745 + }
1.746 +
1.747 + /**
1.748 + * Gets the port number of this <code>URL</code>.
1.749 + *
1.750 + * @return the port number, or -1 if the port is not set
1.751 + */
1.752 + public int getPort() {
1.753 + return port;
1.754 + }
1.755 +
1.756 + /**
1.757 + * Gets the default port number of the protocol associated
1.758 + * with this <code>URL</code>. If the URL scheme or the URLStreamHandler
1.759 + * for the URL do not define a default port number,
1.760 + * then -1 is returned.
1.761 + *
1.762 + * @return the port number
1.763 + * @since 1.4
1.764 + */
1.765 + public int getDefaultPort() {
1.766 + return handler.getDefaultPort();
1.767 + }
1.768 +
1.769 + /**
1.770 + * Gets the protocol name of this <code>URL</code>.
1.771 + *
1.772 + * @return the protocol of this <code>URL</code>.
1.773 + */
1.774 + public String getProtocol() {
1.775 + return protocol;
1.776 + }
1.777 +
1.778 + /**
1.779 + * Gets the host name of this <code>URL</code>, if applicable.
1.780 + * The format of the host conforms to RFC 2732, i.e. for a
1.781 + * literal IPv6 address, this method will return the IPv6 address
1.782 + * enclosed in square brackets (<tt>'['</tt> and <tt>']'</tt>).
1.783 + *
1.784 + * @return the host name of this <code>URL</code>.
1.785 + */
1.786 + public String getHost() {
1.787 + return host;
1.788 + }
1.789 +
1.790 + /**
1.791 + * Gets the file name of this <code>URL</code>.
1.792 + * The returned file portion will be
1.793 + * the same as <CODE>getPath()</CODE>, plus the concatenation of
1.794 + * the value of <CODE>getQuery()</CODE>, if any. If there is
1.795 + * no query portion, this method and <CODE>getPath()</CODE> will
1.796 + * return identical results.
1.797 + *
1.798 + * @return the file name of this <code>URL</code>,
1.799 + * or an empty string if one does not exist
1.800 + */
1.801 + public String getFile() {
1.802 + return file;
1.803 + }
1.804 +
1.805 + /**
1.806 + * Gets the anchor (also known as the "reference") of this
1.807 + * <code>URL</code>.
1.808 + *
1.809 + * @return the anchor (also known as the "reference") of this
1.810 + * <code>URL</code>, or <CODE>null</CODE> if one does not exist
1.811 + */
1.812 + public String getRef() {
1.813 + return ref;
1.814 + }
1.815 +
1.816 + /**
1.817 + * Compares this URL for equality with another object.<p>
1.818 + *
1.819 + * If the given object is not a URL then this method immediately returns
1.820 + * <code>false</code>.<p>
1.821 + *
1.822 + * Two URL objects are equal if they have the same protocol, reference
1.823 + * equivalent hosts, have the same port number on the host, and the same
1.824 + * file and fragment of the file.<p>
1.825 + *
1.826 + * Two hosts are considered equivalent if both host names can be resolved
1.827 + * into the same IP addresses; else if either host name can't be
1.828 + * resolved, the host names must be equal without regard to case; or both
1.829 + * host names equal to null.<p>
1.830 + *
1.831 + * Since hosts comparison requires name resolution, this operation is a
1.832 + * blocking operation. <p>
1.833 + *
1.834 + * Note: The defined behavior for <code>equals</code> is known to
1.835 + * be inconsistent with virtual hosting in HTTP.
1.836 + *
1.837 + * @param obj the URL to compare against.
1.838 + * @return <code>true</code> if the objects are the same;
1.839 + * <code>false</code> otherwise.
1.840 + */
1.841 + public boolean equals(Object obj) {
1.842 + if (!(obj instanceof URL))
1.843 + return false;
1.844 + URL u2 = (URL)obj;
1.845 +
1.846 + return handler.equals(this, u2);
1.847 + }
1.848 +
1.849 + /**
1.850 + * Creates an integer suitable for hash table indexing.<p>
1.851 + *
1.852 + * The hash code is based upon all the URL components relevant for URL
1.853 + * comparison. As such, this operation is a blocking operation.<p>
1.854 + *
1.855 + * @return a hash code for this <code>URL</code>.
1.856 + */
1.857 + public synchronized int hashCode() {
1.858 + if (hashCode != -1)
1.859 + return hashCode;
1.860 +
1.861 + hashCode = handler.hashCode(this);
1.862 + return hashCode;
1.863 + }
1.864 +
1.865 + /**
1.866 + * Compares two URLs, excluding the fragment component.<p>
1.867 + *
1.868 + * Returns <code>true</code> if this <code>URL</code> and the
1.869 + * <code>other</code> argument are equal without taking the
1.870 + * fragment component into consideration.
1.871 + *
1.872 + * @param other the <code>URL</code> to compare against.
1.873 + * @return <code>true</code> if they reference the same remote object;
1.874 + * <code>false</code> otherwise.
1.875 + */
1.876 + public boolean sameFile(URL other) {
1.877 + return handler.sameFile(this, other);
1.878 + }
1.879 +
1.880 + /**
1.881 + * Constructs a string representation of this <code>URL</code>. The
1.882 + * string is created by calling the <code>toExternalForm</code>
1.883 + * method of the stream protocol handler for this object.
1.884 + *
1.885 + * @return a string representation of this object.
1.886 + * @see java.net.URL#URL(java.lang.String, java.lang.String, int,
1.887 + * java.lang.String)
1.888 + * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
1.889 + */
1.890 + public String toString() {
1.891 + return toExternalForm();
1.892 + }
1.893 +
1.894 + /**
1.895 + * Constructs a string representation of this <code>URL</code>. The
1.896 + * string is created by calling the <code>toExternalForm</code>
1.897 + * method of the stream protocol handler for this object.
1.898 + *
1.899 + * @return a string representation of this object.
1.900 + * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.901 + * int, java.lang.String)
1.902 + * @see java.net.URLStreamHandler#toExternalForm(java.net.URL)
1.903 + */
1.904 + public String toExternalForm() {
1.905 + return handler.toExternalForm(this);
1.906 + }
1.907 +
1.908 + /**
1.909 + * Returns a {@link java.net.URLConnection URLConnection} instance that
1.910 + * represents a connection to the remote object referred to by the
1.911 + * {@code URL}.
1.912 + *
1.913 + * <P>A new instance of {@linkplain java.net.URLConnection URLConnection} is
1.914 + * created every time when invoking the
1.915 + * {@linkplain java.net.URLStreamHandler#openConnection(URL)
1.916 + * URLStreamHandler.openConnection(URL)} method of the protocol handler for
1.917 + * this URL.</P>
1.918 + *
1.919 + * <P>It should be noted that a URLConnection instance does not establish
1.920 + * the actual network connection on creation. This will happen only when
1.921 + * calling {@linkplain java.net.URLConnection#connect() URLConnection.connect()}.</P>
1.922 + *
1.923 + * <P>If for the URL's protocol (such as HTTP or JAR), there
1.924 + * exists a public, specialized URLConnection subclass belonging
1.925 + * to one of the following packages or one of their subpackages:
1.926 + * java.lang, java.io, java.util, java.net, the connection
1.927 + * returned will be of that subclass. For example, for HTTP an
1.928 + * HttpURLConnection will be returned, and for JAR a
1.929 + * JarURLConnection will be returned.</P>
1.930 + *
1.931 + * @return a {@link java.net.URLConnection URLConnection} linking
1.932 + * to the URL.
1.933 + * @exception IOException if an I/O exception occurs.
1.934 + * @see java.net.URL#URL(java.lang.String, java.lang.String,
1.935 + * int, java.lang.String)
1.936 + */
1.937 +// public URLConnection openConnection() throws java.io.IOException {
1.938 +// return handler.openConnection(this);
1.939 +// }
1.940 +
1.941 +
1.942 + /**
1.943 + * Opens a connection to this <code>URL</code> and returns an
1.944 + * <code>InputStream</code> for reading from that connection. This
1.945 + * method is a shorthand for:
1.946 + * <blockquote><pre>
1.947 + * openConnection().getInputStream()
1.948 + * </pre></blockquote>
1.949 + *
1.950 + * @return an input stream for reading from the URL connection.
1.951 + * @exception IOException if an I/O exception occurs.
1.952 + * @see java.net.URL#openConnection()
1.953 + * @see java.net.URLConnection#getInputStream()
1.954 + */
1.955 + public final InputStream openStream() throws java.io.IOException {
1.956 + throw new IOException();
1.957 +// return openConnection().getInputStream();
1.958 + }
1.959 +
1.960 + /**
1.961 + * Gets the contents of this URL. This method is a shorthand for:
1.962 + * <blockquote><pre>
1.963 + * openConnection().getContent()
1.964 + * </pre></blockquote>
1.965 + *
1.966 + * @return the contents of this URL.
1.967 + * @exception IOException if an I/O exception occurs.
1.968 + * @see java.net.URLConnection#getContent()
1.969 + */
1.970 + public final Object getContent() throws java.io.IOException {
1.971 + return loadText(toExternalForm());
1.972 + }
1.973 +
1.974 + @JavaScriptBody(args = "url", body = ""
1.975 + + "var request = new XMLHttpRequest();\n"
1.976 + + "request.open('GET', url, false);\n"
1.977 + + "request.send();\n"
1.978 + + "return request.responseText;\n"
1.979 + )
1.980 + private static native String loadText(String url) throws IOException;
1.981 +
1.982 + /**
1.983 + * Gets the contents of this URL. This method is a shorthand for:
1.984 + * <blockquote><pre>
1.985 + * openConnection().getContent(Class[])
1.986 + * </pre></blockquote>
1.987 + *
1.988 + * @param classes an array of Java types
1.989 + * @return the content object of this URL that is the first match of
1.990 + * the types specified in the classes array.
1.991 + * null if none of the requested types are supported.
1.992 + * @exception IOException if an I/O exception occurs.
1.993 + * @see java.net.URLConnection#getContent(Class[])
1.994 + * @since 1.3
1.995 + */
1.996 + public final Object getContent(Class[] classes)
1.997 + throws java.io.IOException {
1.998 + for (Class<?> c : classes) {
1.999 + if (c == String.class) {
1.1000 + return getContent();
1.1001 + }
1.1002 + }
1.1003 + return null;
1.1004 + }
1.1005 +
1.1006 + static URLStreamHandler getURLStreamHandler(String protocol) {
1.1007 + URLStreamHandler universal = new URLStreamHandler() {};
1.1008 + return universal;
1.1009 + }
1.1010 +
1.1011 +}
1.1012 +
1.1013 +class Parts {
1.1014 + String path, query, ref;
1.1015 +
1.1016 + Parts(String file) {
1.1017 + int ind = file.indexOf('#');
1.1018 + ref = ind < 0 ? null: file.substring(ind + 1);
1.1019 + file = ind < 0 ? file: file.substring(0, ind);
1.1020 + int q = file.lastIndexOf('?');
1.1021 + if (q != -1) {
1.1022 + query = file.substring(q+1);
1.1023 + path = file.substring(0, q);
1.1024 + } else {
1.1025 + path = file;
1.1026 + }
1.1027 + }
1.1028 +
1.1029 + String getPath() {
1.1030 + return path;
1.1031 + }
1.1032 +
1.1033 + String getQuery() {
1.1034 + return query;
1.1035 + }
1.1036 +
1.1037 + String getRef() {
1.1038 + return ref;
1.1039 + }
1.1040 +}