/* * Copyright (c) 2015, Oracle and/or its affiliates. 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.xml.catalog; import java.io.StringReader; import java.util.Iterator; import org.xml.sax.InputSource; /** * A SAX EntityResolver/JAXP URIResolver that uses catalogs. * *
* This class implements both a SAX EntityResolver and a JAXP URIResolver.
*
*
* @since 9
*/
final class CatalogResolverImpl implements CatalogResolver {
Catalog catalog;
/**
* Construct an instance of the CatalogResolver from a Catalog.
*
* @param catalog A Catalog.
*/
public CatalogResolverImpl(Catalog catalog) {
this.catalog = catalog;
}
@Override
public InputSource resolveEntity(String publicId, String systemId) {
//Normalize publicId and systemId
systemId = Normalizer.normalizeURI(systemId);
publicId = Normalizer.normalizePublicId(Normalizer.decodeURN(publicId));
//check whether systemId is an urn
if (systemId != null && systemId.startsWith("urn:publicid:")) {
systemId = Normalizer.decodeURN(systemId);
if (publicId != null && !publicId.equals(systemId)) {
systemId = null;
} else {
publicId = systemId;
systemId = null;
}
}
CatalogImpl c = (CatalogImpl)catalog;
String resolvedSystemId = resolve(c, publicId, systemId);
if (resolvedSystemId != null) {
return new InputSource(resolvedSystemId);
}
GroupEntry.ResolveType resolveType = ((CatalogImpl) catalog).getResolve();
switch (resolveType) {
case IGNORE:
return new InputSource(new StringReader(""));
case STRICT:
CatalogMessages.reportError(CatalogMessages.ERR_NO_MATCH,
new Object[]{publicId, systemId});
}
//no action, allow the parser to continue
return null;
}
/**
* Resolves the publicId or systemId to one specified in the catalog.
* @param catalog the catalog
* @param publicId the publicId
* @param systemId the systemId
* @return the resolved systemId if a match is found, null otherwise
*/
String resolve(CatalogImpl catalog, String publicId, String systemId) {
String resolvedSystemId = null;
//search the current catalog
catalog.reset();
if (systemId != null) {
resolvedSystemId = catalog.matchSystem(systemId);
}
if (resolvedSystemId == null) {
resolvedSystemId = catalog.matchPublic(publicId);
}
//mark the catalog as having been searched before trying alternatives
catalog.markAsSearched();
//search alternative catalogs
if (resolvedSystemId == null) {
Iterator