/*
* 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.riot.system;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.jena.atlas.iterator.Iter;
import org.apache.jena.atlas.lib.ActionKeyValue;
import org.apache.jena.atlas.lib.Pair;
import org.apache.jena.iri.IRI;
import org.apache.jena.iri.IRIFactory;
import com.hp.hpl.jena.shared.PrefixMapping;
/**
* Abstract base implementation of a {@link PrefixMap} which provides
* some useful helper methods
*
*/
public abstract class PrefixMapBase implements PrefixMap {
protected boolean strSafeFor(String str, char ch) {
return str.indexOf(ch) == -1;
}
protected String canonicalPrefix(String prefix) {
if (prefix.endsWith(":"))
return prefix.substring(0, prefix.length() - 1);
return prefix;
}
@Override
public Map<String, IRI> getMappingCopy() {
return new HashMap<String, IRI>(this.getMapping());
}
@Override
public Map<String, String> getMappingCopyStr() {
final Map<String, String> smap = new HashMap<String, String>();
ActionKeyValue<String, IRI> action = new ActionKeyValue<String, IRI>() {
@Override
public void apply(String key, IRI value) {
String str = value.toString();
smap.put(key, str);
}
};
Iter.apply(getMapping(), action);
return smap;
}
@Override
public void add(String prefix, String iriString) {
this.add(prefix, IRIFactory.iriImplementation().create(iriString));
}
@Override
public void putAll(PrefixMap pmap) {
for (Map.Entry<String, IRI> e : pmap.getMapping().entrySet()) {
this.add(e.getKey(), e.getValue());
}
}
@Override
public void putAll(PrefixMapping pmap) {
putAll(pmap.getNsPrefixMap()) ;
}
@Override
public void putAll(Map<String, String> mapping) {
for (Map.Entry<String, String> e : mapping.entrySet()) {
this.add(e.getKey(), e.getValue());
}
}
/**
* Abbreviate an IRI or return a pair of prefix and local parts.
*
* @param uriStr
* URI string to abbreviate
* @param turtleSafe
* Only return legal Turtle local names.
*/
protected Pair<String, String> abbrev(Map<String, IRI> prefixes, String uriStr, boolean checkLocalPart) {
for (Entry<String, IRI> e : prefixes.entrySet()) {
String uriForPrefix = e.getValue().toString();
if (uriStr.startsWith(uriForPrefix)) {
String ln = uriStr.substring(uriForPrefix.length());
if (!checkLocalPart || this.isSafeLocalPart(ln))
return Pair.create(e.getKey(), ln);
}
}
return null;
}
@Override
public String expand(String prefixedName) {
int i = prefixedName.indexOf(':');
if (i < 0)
return null;
return expand(prefixedName.substring(0, i), prefixedName.substring(i + 1));
}
/**
* Is a local name safe? Default is a fast check for Turtle-like local names.
* @param ln Local name
* @return True if safe, false otherwise
*/
protected boolean isSafeLocalPart(String ln) {
// This test isn't complete but covers the common issues that arise.
// Does not consider possible escaping.
return (strSafeFor(ln, '/') && strSafeFor(ln, '#') && strSafeFor(ln, ':'));
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{ ");
boolean first = true;
for (Entry<String, IRI> e : this.getMapping().entrySet()) {
String prefix = e.getKey();
IRI iri = e.getValue();
if (first)
first = false;
else
sb.append(" ,");
sb.append(prefix);
sb.append(":=");
sb.append(iri.toString());
}
sb.append(" }");
return sb.toString();
}
}