com.sun.tools.rngom.xml.sax.XmlBaseHandler Maven / Gradle / Ivy
/*
* Copyright (C) 2004-2011
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.sun.tools.rngom.xml.sax;
import com.sun.tools.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);
}
}