| /* |
| * Copyright 2005-2006 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 com.sun.xml.internal.rngom.xml.sax; |
| |
| import com.sun.xml.internal.rngom.util.Uri; |
| import org.xml.sax.Locator; |
| |
| public class XmlBaseHandler { |
| private int depth = 0; |
| private Locator loc; |
| private Entry stack = null; |
| |
| private static class Entry { |
| private Entry parent; |
| private String attValue; |
| private String systemId; |
| private int depth; |
| } |
| |
| public void setLocator(Locator loc) { |
| this.loc = loc; |
| } |
| |
| public void startElement() { |
| ++depth; |
| } |
| |
| public void endElement() { |
| if (stack != null && stack.depth == depth) |
| stack = stack.parent; |
| --depth; |
| } |
| |
| public void xmlBaseAttribute(String value) { |
| Entry entry = new Entry(); |
| entry.parent = stack; |
| stack = entry; |
| entry.attValue = Uri.escapeDisallowedChars(value); |
| entry.systemId = getSystemId(); |
| entry.depth = depth; |
| } |
| |
| private String getSystemId() { |
| return loc == null ? null : loc.getSystemId(); |
| } |
| |
| public String getBaseUri() { |
| return getBaseUri1(getSystemId(), stack); |
| } |
| |
| private static String getBaseUri1(String baseUri, Entry stack) { |
| if (stack == null |
| || (baseUri != null && !baseUri.equals(stack.systemId))) |
| return baseUri; |
| baseUri = stack.attValue; |
| if (Uri.isAbsolute(baseUri)) |
| return baseUri; |
| return Uri.resolve(getBaseUri1(stack.systemId, stack.parent), baseUri); |
| } |
| } |