/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.rdfxml.xmlinput.impl;
import java.util.HashSet;
import java.util.Set;
import org.apache.jena.rdfxml.xmlinput.ARPErrorNumbers ;
import org.apache.jena.rdfxml.xmlinput.states.Frame ;
import org.xml.sax.SAXParseException;
abstract public class QNameLexer implements Names, ARPErrorNumbers {
final int bad;
final int select;
final Frame frame;
public QNameLexer(Frame f, int good, int bad) {
bad &= ~good;
this.bad = bad;
this.select = good|bad;
this.frame = f;
}
private int xml(String wanted, int fl) {
return
(fl &select)== fl
&& wanted.equals(getLocalName())
&& getUri().equals(xmlns)
? fl : 0;
}
abstract boolean isInRdfns(Taint taintMe) throws SAXParseException;
abstract void error(Taint taintMe,int rslt) throws SAXParseException;
abstract void deprecatedAttribute(Taint me,int rslt) throws SAXParseException;
abstract String getLocalName();
abstract String getUri();
abstract String getQName();
private int rdf(Taint taintMe,String wanted, int fl) throws SAXParseException {
if ((fl &select)== fl
&& wanted.equals(getLocalName())) {
if (isInRdfns(taintMe))
return fl;
if (getQName().toLowerCase().startsWith("rdf:"))
frame.warning(taintMe,WARN_NOT_RDF_NAMESPACE,getQName() + " is not special. " +
"The namespace binding of the RDF namespace is incorrect. It should be <"+rdfns+"> not <"+getUri()+">");
}
return 0;
}
int lookup(Taint taintMe) throws SAXParseException {
int rslt = lookupNoMsg(taintMe);
if ((rslt&bad)!=0) {
switch (rslt){
case A_DEPRECATED:
deprecatedAttribute(taintMe,rslt);
break;
case A_BAGID:
bagIDAttribute(taintMe,rslt);
break;
default:
error(taintMe,rslt);
}
}
return rslt;
}
abstract void bagIDAttribute(Taint taintMe, int rslt) throws SAXParseException;
private int lookupNoMsg(Taint taintMe) throws SAXParseException {
char firstChar;
try {
firstChar = getLocalName().charAt(0);
}
catch (StringIndexOutOfBoundsException e) {
// Yes this really happens with the DOM one.
// How disgusting.
// When xmlns="eg:a"
// xmlns is the prefix ...
// System.err.println(getUri());
if (this.getUri().equals(xmlnsns))
return A_XMLNS;
throw e;
}
switch (firstChar) {
case 'b': /* base bagID */
switch (getLocalName().length()) {
case 4:
return xml("base",A_XMLBASE);
case 5:
return rdf(taintMe,"bagID",A_BAGID);
}
break;
case 'l': /* lang li */
switch (getLocalName().length()) {
case 2:
return rdf(taintMe,"li",E_LI);
case 4:
return xml("lang",A_XMLLANG);
}
break;
case 's': /* space */
return xml("space",A_XML_OTHER);
case 'i': /* space */
return xml("id",A_XML_OTHER);
case 'I': /* ID */
return rdf(taintMe,"ID",A_ID);
case 'n': /* nodeID */
return rdf(taintMe,"nodeID",A_NODEID);
case 'a': /* about aboutEach aboutEachPrefix */
switch (getLocalName().length()) {
case 5:
return rdf(taintMe,"about",A_ABOUT);
case 9:
return rdf(taintMe,"aboutEach",A_DEPRECATED);
case 15:
return rdf(taintMe,"aboutEachPrefix",A_DEPRECATED);
}
break;
case 'r': /* resource */
return rdf(taintMe,"resource",A_RESOURCE);
case 'R': /* resource */
return rdf(taintMe,"RDF",E_RDF);
case 'd': /* datatype */
return rdf(taintMe,"datatype",A_DATATYPE);
case 't': /* type */
return rdf(taintMe,"type",A_TYPE);
case 'p': /* parseType */
return rdf(taintMe,"parseType",A_PARSETYPE);
case 'D': /* Description */
return rdf(taintMe,"Description",E_DESCRIPTION);
}
return 0;
}
// static final Set rdfnames = new HashSet();
// static {
// rdfnames.add("Description");
// rdfnames.add("RDF");
// rdfnames.add("li");
// }
static final Set<String> knownRDFProperties = new HashSet<>();
static final Set<String> knownRDFTypes = knownRDFProperties;
static {
knownRDFTypes.add("Bag");
knownRDFTypes.add("Seq");
knownRDFTypes.add("Alt");
knownRDFTypes.add("List");
knownRDFTypes.add("XMLLiteral");
knownRDFTypes.add("Property");
knownRDFProperties.add("type");
knownRDFTypes.add("Statement");
knownRDFProperties.add("subject");
knownRDFProperties.add("predicate");
knownRDFProperties.add("object");
knownRDFProperties.add("value");
knownRDFProperties.add("first");
knownRDFProperties.add("rest");
// not strictly true.
knownRDFProperties.add("nil");
}
// static final Set knownBadRDFNames = new HashSet();
// static {
// knownBadRDFNames.add("ID");
// knownBadRDFNames.add("about");
// knownBadRDFNames.add("aboutEach");
// knownBadRDFNames.add("aboutEachPrefix");
// knownBadRDFNames.add("resource");
// knownBadRDFNames.add("bagID");
// knownBadRDFNames.add("parseType");
// knownBadRDFNames.add("datatype");
// knownBadRDFNames.add("li");
// knownBadRDFNames.add("type");
// knownBadRDFNames.add("Description");
// knownBadRDFNames.add("nodeID");
// }
protected static boolean isMemberProperty(String name) {
if (name.startsWith("_")) {
String number = name.substring(1);
if (number.startsWith("-") || number.startsWith("0"))
return false;
try {
Integer.parseInt(number);
return true;
} catch (NumberFormatException e) {
try {
// It might be > Integer.MAX_VALUE
new java.math.BigInteger(number);
return true;
} catch (NumberFormatException ee) {
return false;
}
}
}
return false;
}
static public boolean isKnownRDFProperty(String name) {
return knownRDFProperties.contains(name)
|| isMemberProperty(name);
}
static public boolean isKnownNonMemberRDFProperty(String name) {
return knownRDFProperties.contains(name);
}
}