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package com.cmcc.simulator.xml;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.GZIPOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.utils.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GZIPUtil {
private static final Logger logger = LoggerFactory.getLogger(GZIPUtil.class);
public static File pack(File[] sources, File target) {
FileOutputStream out = null;
try {
out = new FileOutputStream(target);
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
TarArchiveOutputStream os = new TarArchiveOutputStream(out);
for (File file : sources) {
try {
TarArchiveEntry tae = new TarArchiveEntry(file);
tae.setName(file.getName());
os.putArchiveEntry(tae);
// os.putArchiveEntry(tae);
IOUtils.copy(new FileInputStream(file), os);
os.closeArchiveEntry();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
if (os != null) {
try {
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return target;
}
public static File compress(String filePath, File source) {
File target = new File(filePath + "/" + source.getName() + ".gz");
FileInputStream in = null;
GZIPOutputStream out = null;
try {
in = new FileInputStream(source);
out = new GZIPOutputStream(new FileOutputStream(target));
byte[] array = new byte[1024];
int number = -1;
while ((number = in.read(array, 0, array.length)) != -1) {
out.write(array, 0, number);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
return target;
}
public static void doCompressFileToGz(String inFileName) {
try {
logger.debug("Creating the GZIP output stream.");
String outFileName = inFileName + ".gz";
GZIPOutputStream out = null;
try {
out = new GZIPOutputStream(new FileOutputStream(outFileName));
} catch (FileNotFoundException e) {
logger.info("Could not create file: " + outFileName);
System.exit(1);
}
logger.debug("Opening the input file.");
FileInputStream in = null;
try {
in = new FileInputStream(inFileName);
} catch (FileNotFoundException e) {
logger.error("File not found. " + inFileName);
System.exit(1);
}
logger.debug("Transfering bytes from input file to GZIP Format.");
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
logger.info("Completing the GZIP file");
out.finish();
out.close();
} catch (IOException e) {
e.printStackTrace();
System.exit(1);
}
}
}
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