/**
* LOGBack: the reliable, fast and flexible logging library for Java.
*
* Copyright (C) 1999-2006, QOS.ch
*
* This library is free software, you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation.
*/
package ch.qos.logback.core.rolling.helper;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.GZIPOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import ch.qos.logback.core.Context;
import ch.qos.logback.core.spi.ContextAwareBase;
import ch.qos.logback.core.status.ErrorStatus;
import ch.qos.logback.core.status.WarnStatus;
/**
* The <code>Compression</code> class implements ZIP and GZ file
* compression/decompression methods.
*
* @author Ceki Gülcü
*/
public class Compress extends ContextAwareBase {
public static final int NONE = 0;
public static final int GZ = 1;
public static final int ZIP = 2;
/**
* String constant representing no compression. The value of this constant is
* "NONE".
*/
public static final String NONE_STR = "NONE";
/**
* String constant representing compression in the GZIP format. The value of
* this constant is "GZ".
*/
public static final String GZ_STR = "GZ";
/**
* String constant representing compression in the ZIP format. The value of
* this constant is "ZIP".
*/
public static final String ZIP_STR = "ZIP";
Context context;
public void ZIPCompress(String nameOfFile2zip) {
// Here we rely on the fact that the two argument version of ZIPCompress
// automatically adds a .zip extension to the second argument
GZCompress(nameOfFile2zip, nameOfFile2zip);
}
public void ZIPCompress(String nameOfFile2zip, String nameOfZippedFile) {
File file2zip = new File(nameOfFile2zip);
if (!file2zip.exists()) {
addStatus(new WarnStatus(
"The file to compress named [" + nameOfFile2zip
+ "] does not exist.", this));
return;
}
if (!nameOfZippedFile.endsWith(".zip")) {
nameOfZippedFile = nameOfZippedFile + ".zip";
}
File zippedFile = new File(nameOfZippedFile);
if (zippedFile.exists()) {
addStatus(new WarnStatus(
"The target compressed file named [" + nameOfZippedFile
+ "] exist already.", this));
return;
}
try {
FileOutputStream fos = new FileOutputStream(nameOfZippedFile);
ZipOutputStream zos = new ZipOutputStream(fos);
FileInputStream fis = new FileInputStream(nameOfFile2zip);
ZipEntry zipEntry = new ZipEntry(file2zip.getName());
zos.putNextEntry(zipEntry);
byte[] inbuf = new byte[8102];
int n;
while ((n = fis.read(inbuf)) != -1) {
zos.write(inbuf, 0, n);
}
fis.close();
zos.close();
if (!file2zip.delete()) {
addStatus(new WarnStatus("Could not delete [" + nameOfFile2zip + "].",
this));
}
} catch (Exception e) {
addStatus(new ErrorStatus("Error occurred while compressing ["
+ nameOfFile2zip + "] into [" + nameOfZippedFile + "].", this, e));
}
}
public void GZCompress(String nameOfFile2gz) {
// Here we rely on the fact that the two argument version of GZCompress
// automatically adds a .gz extension to the second argument
GZCompress(nameOfFile2gz, nameOfFile2gz);
}
public void GZCompress(String nameOfFile2gz, String nameOfgzedFile) {
File file2gz = new File(nameOfFile2gz);
if (!file2gz.exists()) {
addStatus(new WarnStatus("The file to compress named [" + nameOfFile2gz
+ "] does not exist.", this));
return;
}
if (!nameOfgzedFile.endsWith(".gz")) {
nameOfgzedFile = nameOfgzedFile + ".gz";
}
File gzedFile = new File(nameOfgzedFile);
if (gzedFile.exists()) {
addStatus(new WarnStatus("The target compressed file named ["
+ nameOfgzedFile + "] exist already.", this));
return;
}
try {
FileOutputStream fos = new FileOutputStream(nameOfgzedFile);
GZIPOutputStream gzos = new GZIPOutputStream(fos);
FileInputStream fis = new FileInputStream(nameOfFile2gz);
byte[] inbuf = new byte[8102];
int n;
while ((n = fis.read(inbuf)) != -1) {
gzos.write(inbuf, 0, n);
}
fis.close();
gzos.close();
if (!file2gz.delete()) {
addStatus(new WarnStatus("Could not delete [" + nameOfFile2gz + "].",
this));
}
} catch (Exception e) {
addStatus(new ErrorStatus("Error occurred while compressing ["
+ nameOfFile2gz + "] into [" + nameOfgzedFile + "].", this, e));
}
}
@Override
public String toString() {
return "c.q.l.core.rolling.helper.Compress";
}
}