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/*
* Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
* written permission is obtained from UCAR/Unidata. The user also
* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.nc2.rewrite;
import ucar.nc2.NetcdfFileWriter;
import ucar.nc2.dt.grid.CFGridWriter2;
import ucar.nc2.write.Nc4Chunking;
import ucar.nc2.write.Nc4ChunkingStrategy;
import java.io.File;
import java.io.IOException;
import java.util.Formatter;
/**
* Describe
*
* @author caron
* @since 8/5/2014
*/
public class RewriteGrid {
double rewrite(String filenameIn, String filenameOut,
NetcdfFileWriter.Version version, Nc4Chunking.Strategy chunkerType, int deflateLevel, boolean shuffle,
Formatter fw) throws IOException {
ucar.nc2.dt.GridDataset gds = ucar.nc2.dt.grid.GridDataset.open(filenameIn);
Nc4Chunking chunking = (version == NetcdfFileWriter.Version.netcdf3) ? null : Nc4ChunkingStrategy.factory(chunkerType, deflateLevel, shuffle);
NetcdfFileWriter writer = NetcdfFileWriter.createNew(version, filenameOut, chunking);
long start = System.currentTimeMillis();
long totalBytes;
try {
totalBytes = CFGridWriter2.writeFile(gds, null, null, null, 1, null, null, 1, true, writer);
} catch (Throwable e) {
e.printStackTrace();
return 0;
}
File fin = new File(filenameIn);
double lenIn = (double) fin.length();
lenIn /= 1000 * 1000;
File fout = new File(filenameOut);
double lenOut = (double) fout.length();
lenOut /= 1000 * 1000;
System.out.format(" %10.3f: %s%n", lenOut / lenIn, fout.getCanonicalPath());
double took = (System.currentTimeMillis() - start) /1000.0;
System.out.format(" that took: %f secs%n", took);
if (fw != null)
fw.format("%s,%10.3f, %s,%s, %d, %10.3f,%10.3f,%d%n", fin.getName(), lenIn,
(chunkerType != null) ? chunkerType : "nc3",
shuffle ? "shuffle" : "",
deflateLevel,
lenOut, lenOut / lenIn, totalBytes);
return lenOut;
}
}
