/*
 * 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.axis2.deployment.resolver;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ws.commons.schema.resolver.DefaultURIResolver;
import org.xml.sax.InputSource;

import java.net.URI;

public class WarFileBasedURIResolver extends DefaultURIResolver {

    protected static final Log log = LogFactory
            .getLog(WarFileBasedURIResolver.class);

    private ClassLoader classLoader;

    public WarFileBasedURIResolver(ClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    public InputSource resolveEntity(
            String targetNamespace,
            String schemaLocation,
            String baseUri) {
        //no issue with
        if (isAbsolute(schemaLocation)) {
            return super.resolveEntity(
                    targetNamespace, schemaLocation, baseUri);
        } else {
            //validate
            if ((baseUri == null || "".equals(baseUri)) && schemaLocation.startsWith("..")) {
                throw new RuntimeException(
                        "Unsupported schema location " + schemaLocation);
            }

            URI lastImportLocation = URI.create(baseUri).resolve(schemaLocation);
            String searchingStr = lastImportLocation.toString();
            return new InputSource(classLoader.getResourceAsStream(searchingStr));
        }
    }
}