/*
* Copyright 2013, 2014 Deutsche Nationalbibliothek
*
* Licensed 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.culturegraph.mf.io;
import java.io.Reader;
import org.culturegraph.mf.commons.ResourceUtil;
import org.culturegraph.mf.framework.FluxCommand;
import org.culturegraph.mf.framework.MetafactureException;
import org.culturegraph.mf.framework.ObjectReceiver;
import org.culturegraph.mf.framework.annotations.Description;
import org.culturegraph.mf.framework.annotations.In;
import org.culturegraph.mf.framework.annotations.Out;
import org.culturegraph.mf.framework.helpers.DefaultObjectPipe;
/**
* Opens a resource or file and passes a reader for it to the receiver.
*
* @author Christoph Böhme
*
*/
@Description("Opens a resource.")
@In(String.class)
@Out(java.io.Reader.class)
@FluxCommand("open-resource")
public final class ResourceOpener
extends DefaultObjectPipe<String, ObjectReceiver<Reader>> {
private String encoding = "UTF-8";
/**
* Returns the encoding used to open the resource.
*
* @return current default setting
*/
public String getEncoding() {
return encoding;
}
/**
* Sets the encoding used to open the resource.
*
* @param encoding new encoding
*/
public void setEncoding(final String encoding) {
this.encoding = encoding;
}
@Override
public void process(final String file) {
try {
getReceiver().process(ResourceUtil.getReader(file, encoding));
} catch (java.io.IOException e) {
throw new MetafactureException(e);
}
}
}