/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wps.ppio;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.gce.arcgrid.ArcGridFormat;
import org.geotools.parameter.Parameter;
import org.opengis.parameter.GeneralParameterValue;
/**
* Decodes/encodes a GeoTIFF file
*
* @author Andrea Aime - OpenGeo
*
*/
public class ArcGridPPIO extends CDataPPIO {
protected ArcGridPPIO() {
super(GridCoverage2D.class, GridCoverage2D.class, "application/arcgrid");
}
@Override
public Object decode(InputStream input) throws Exception {
// in order to read a grid coverage we need to first store it on disk
File root = new File(System.getProperty("java.io.tmpdir", "."));
File f = File.createTempFile("wps", "asc", root);
FileOutputStream os = null;
try {
os = new FileOutputStream(f);
IOUtils.copy(input, os);
} finally {
IOUtils.closeQuietly(os);
}
// and then we try to read it as a asc
return new ArcGridFormat().getReader(f).read(null);
}
@Override
public Object decode(String arcgrid) throws Exception {
// if the user forgot to add the final newline let's just add it
if(!arcgrid.endsWith("\n")) {
arcgrid += "\n";
}
ByteArrayInputStream in = new ByteArrayInputStream(arcgrid.getBytes());
return new ArcGridFormat().getReader(in).read(null);
}
@Override
public void encode(Object value, OutputStream os) throws IOException {
Parameter<Boolean> forceSquareCells = new Parameter<Boolean>(ArcGridFormat.FORCE_CELLSIZE, Boolean.TRUE);
new ArcGridFormat().getWriter(os).write((GridCoverage2D) value,
new GeneralParameterValue[] {forceSquareCells});
}
@Override
public String getFileExtension() {
return "asc";
}
}