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package com.nis.nmsclient.util;
import java.io.File;
import org.apache.log4j.Logger;
import com.nis.nmsclient.util.GzipUtil;
import com.nis.nmsclient.util.RarUtil;
import com.nis.nmsclient.util.ZipUtil;
/**
* 文件解压缩的统一处理
* @date Mar 20, 2012
* @version
*/
public class CompressFileMgr {
static Logger logger = Logger.getLogger(CompressFileMgr.class);
/**
* 文件压缩
* @param sourcePath 源文件或目录
* @param destFile 压缩后的文件
* @param excludes 源目录中不要压缩的文件列表
* @param isAbs 相对路径还是绝对路径压缩
* @return
* @throws Exception
*/
public boolean compressFile(String sourcePath, String destFile,
String[] excludes, boolean isAbs) throws Exception {
boolean returnFlag = true;
File folder = new File(sourcePath);
if (!folder.exists()) {
return false;
}
if (destFile.length() == (destFile.lastIndexOf(".zip") + 4)) {// 判断是否zip包
ZipUtil.zip(sourcePath, destFile, excludes);
} else if (destFile.length() == (destFile.lastIndexOf(".gz") + 3)) {// 判断是否gzip包
GzipUtil.gzipByCmd(sourcePath, destFile, excludes, isAbs);
} else if (destFile.length() == (destFile.lastIndexOf(".tar") + 4)) {// 判断是否tar包
GzipUtil.tarByCmd(sourcePath, destFile, excludes, isAbs);
} else {
throw new Exception("unable to compress this compressed file");
}
return returnFlag;
}
/**
* 文件解压，如果sourcePath是一个目录，则解压它下面的所有压缩文件
* @param sourcePath 需要解压的文件或需要解压文件的目录
* @param destPath 解压到的目标路径
* @param isAbs 相对路径还是绝对路径解压
* @return
* @throws Exception
*/
public boolean decompressFile(String sourcePath, String destPath, boolean isAbs)
throws Exception {
logger.debug("decompressFile start……");
boolean returnFlag = true;
logger.debug("decompressFile sourcePath-----" + sourcePath);
logger.debug("decompressFile destPath-----" + destPath);
File folder = new File(sourcePath);
if (!folder.exists()) {
return false;
}
if (folder.isDirectory()) {
String files[] = folder.list();
String fileAbs = null;
for (int i = 0; i < files.length; i++) {
fileAbs = sourcePath + File.separator + files[i];
decompressFile(fileAbs, destPath, isAbs);
}
} else {
decompress(sourcePath, destPath, isAbs);
}
logger.debug("decompressFile end!");
return returnFlag;
}
/**
* 解压文件，只针对单个压缩文件
* @param sourceFile 需要解压的文件
* @param destPath 解压到的目标路径
* @param isAbs 相对路径还是绝对路径解压
* @throws Exception
*/
private void decompress(String sourceFile, String destPath, boolean isAbs)
throws Exception {
logger.debug("decompress start……");
logger.debug("decompress sourceFile---" + sourceFile);
logger.debug("decompress 1-----"+(sourceFile.length() == (sourceFile.lastIndexOf(".zip") + 4)));
logger.debug("decompress 2-----"+(sourceFile.length() == (sourceFile.lastIndexOf(".rar") + 4)));
logger.debug("decompress 3-----"+(sourceFile.length() == (sourceFile.lastIndexOf(".gz") + 3)));
if (sourceFile.length() == (sourceFile.lastIndexOf(".zip") + 4)) {// 判断是否zip包
ZipUtil.unZip(sourceFile, destPath);
} else if (sourceFile.length() == (sourceFile.lastIndexOf(".rar") + 4)) {// 判断是否rar包
RarUtil.unRar(sourceFile, destPath);
} else if (sourceFile.length() == (sourceFile.lastIndexOf(".gz") + 3)) {// 判断是否gzip包
GzipUtil.unGzipByCmd(sourceFile, destPath, isAbs);
} else if (sourceFile.length() == (sourceFile.lastIndexOf(".tar") + 4)) {// 判断是否tar包
GzipUtil.unTarByCmd(sourceFile, destPath, isAbs);
} else {
throw new Exception("unable to decompress this decompressed file");
}
logger.debug("decompress end!");
}
public static String getCompressSuffixByOs(boolean isAbs){
String suffix = ".zip";
//根据操作系统确定获取进程ID的方式
String os = System.getProperty("os.name");
if (os.startsWith("Windows")) {
suffix = ".zip";
}else if (os.startsWith("Linux")){
suffix = (isAbs ? "_absolute" : "_relative") + ".tar.gz";
}
return suffix;
}
public static boolean isCompressFile(File file){
boolean flag = false;
if(file.isFile()){
String fileName = file.getName();
if (".rar".equalsIgnoreCase(fileName.substring(fileName.length() - 4))
|| ".zip".equalsIgnoreCase(fileName.substring(fileName.length() - 4))
|| ".tar".equalsIgnoreCase(fileName.substring(fileName.length() - 4))
|| ".gz".equalsIgnoreCase(fileName.substring(fileName.length() - 3))) {
flag = true;
}
}
return flag;
}
}
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