| /* |
| * Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.net.www.protocol.jar; |
| |
| import java.io.*; |
| import java.net.*; |
| import java.util.*; |
| import sun.net.www.ParseUtil; |
| |
| /* |
| * Jar URL Handler |
| */ |
| public class Handler extends java.net.URLStreamHandler { |
| |
| private static final String separator = "!/"; |
| |
| protected java.net.URLConnection openConnection(URL u) |
| throws IOException { |
| return new JarURLConnection(u, this); |
| } |
| |
| private int indexOfBangSlash(String spec) { |
| int indexOfBang = spec.length(); |
| while((indexOfBang = spec.lastIndexOf('!', indexOfBang)) != -1) { |
| if ((indexOfBang != (spec.length() - 1)) && |
| (spec.charAt(indexOfBang + 1) == '/')) { |
| return indexOfBang + 1; |
| } else { |
| indexOfBang--; |
| } |
| } |
| return -1; |
| } |
| |
| protected void parseURL(URL url, String spec, |
| int start, int limit) { |
| String file = null; |
| String ref = null; |
| // first figure out if there is an anchor |
| int refPos = spec.indexOf('#', limit); |
| boolean refOnly = refPos == start; |
| if (refPos > -1) { |
| ref = spec.substring(refPos + 1, spec.length()); |
| if (refOnly) { |
| file = url.getFile(); |
| } |
| } |
| // then figure out if the spec is |
| // 1. absolute (jar:) |
| // 2. relative (i.e. url + foo/bar/baz.ext) |
| // 3. anchor-only (i.e. url + #foo), which we already did (refOnly) |
| boolean absoluteSpec = false; |
| if (spec.length() >= 4) { |
| absoluteSpec = spec.substring(0, 4).equalsIgnoreCase("jar:"); |
| } |
| spec = spec.substring(start, limit); |
| |
| if (absoluteSpec) { |
| file = parseAbsoluteSpec(spec); |
| } else if (!refOnly) { |
| file = parseContextSpec(url, spec); |
| |
| // Canonize the result after the bangslash |
| int bangSlash = indexOfBangSlash(file); |
| String toBangSlash = file.substring(0, bangSlash); |
| String afterBangSlash = file.substring(bangSlash); |
| sun.net.www.ParseUtil canonizer = new ParseUtil(); |
| afterBangSlash = canonizer.canonizeString(afterBangSlash); |
| file = toBangSlash + afterBangSlash; |
| } |
| setURL(url, "jar", "", -1, file, ref); |
| } |
| |
| private String parseAbsoluteSpec(String spec) { |
| URL url = null; |
| int index = -1; |
| // check for !/ |
| if ((index = indexOfBangSlash(spec)) == -1) { |
| throw new NullPointerException("no !/ in spec"); |
| } |
| // test the inner URL |
| try { |
| String innerSpec = spec.substring(0, index - 1); |
| url = new URL(innerSpec); |
| } catch (MalformedURLException e) { |
| throw new NullPointerException("invalid url: " + |
| spec + " (" + e + ")"); |
| } |
| return spec; |
| } |
| |
| private String parseContextSpec(URL url, String spec) { |
| String ctxFile = url.getFile(); |
| // if the spec begins with /, chop up the jar back !/ |
| if (spec.startsWith("/")) { |
| int bangSlash = indexOfBangSlash(ctxFile); |
| if (bangSlash == -1) { |
| throw new NullPointerException("malformed " + |
| "context url:" + |
| url + |
| ": no !/"); |
| } |
| ctxFile = ctxFile.substring(0, bangSlash); |
| } |
| if (!ctxFile.endsWith("/") && (!spec.startsWith("/"))){ |
| // chop up the last component |
| int lastSlash = ctxFile.lastIndexOf('/'); |
| if (lastSlash == -1) { |
| throw new NullPointerException("malformed " + |
| "context url:" + |
| url); |
| } |
| ctxFile = ctxFile.substring(0, lastSlash + 1); |
| } |
| return (ctxFile + spec); |
| } |
| } |