package net.xndroid.utils;
/**
* this source file is from http://www.cnblogs.com/lbjz/p/4008458.html
* original package name is com.yabsz.decompCompr
* */
/**
* 2010-4-20
*/
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
/**
* TAR工具
*
* @author
* @since 1.0
*/
public abstract class TarUtils {
private static final String BASE_DIR = "";
// 符号"/"用来作为目录标识判断符
private static final String PATH = "/";
private static final int BUFFER = 1024;
private static final String EXT = ".tar";
/**
* 归档
*
* @param srcPath
* @param destPath
* @throws Exception
*/
public static void archive(String srcPath, String destPath)
throws Exception {
File srcFile = new File(srcPath);
archive(srcFile, destPath);
}
/**
* 归档
*
* @param srcFile
* 源路径
* @param destPath
* 目标路径
* @throws Exception
*/
public static void archive(File srcFile, File destFile) throws Exception {
TarArchiveOutputStream taos = new TarArchiveOutputStream(
new FileOutputStream(destFile));
archive(srcFile, taos, BASE_DIR);
taos.flush();
taos.close();
}
/**
* 归档
*
* @param srcFile
* @throws Exception
*/
public static void archive(File srcFile) throws Exception {
String name = srcFile.getName();
//String basePath = srcFile.getParent();
String destPath = name + EXT;
archive(srcFile, destPath);
}
/**
* 归档文件
*
* @param srcFile
* @param destPath
* @throws Exception
*/
public static void archive(File srcFile, String destPath) throws Exception {
archive(srcFile, new File(destPath));
}
/**
* 归档
*
* @param srcPath
* @throws Exception
*/
public static void archive(String srcPath) throws Exception {
File srcFile = new File(srcPath);
archive(srcFile);
}
/**
* 归档
*
* @param srcFile
* 源路径
* @param taos
* TarArchiveOutputStream
* @param basePath
* 归档包内相对路径
* @throws Exception
*/
private static void archive(File srcFile, TarArchiveOutputStream taos,
String basePath) throws Exception {
if (srcFile.isDirectory()) {
archiveDir(srcFile, taos, basePath);
} else {
archiveFile(srcFile, taos, basePath);
}
}
/**
* 目录归档
*
* @param dir
* @param taos
* TarArchiveOutputStream
* @param basePath
* @throws Exception
*/
private static void archiveDir(File dir, TarArchiveOutputStream taos,
String basePath) throws Exception {
File[] files = dir.listFiles();
if (files.length < 1) {
TarArchiveEntry entry = new TarArchiveEntry(basePath
+ dir.getName() + PATH);
taos.putArchiveEntry(entry);
taos.closeArchiveEntry();
}
for (File file : files) {
// 递归归档
archive(file, taos, basePath + dir.getName() + PATH);
}
}
/**
* 数据归档
*
* @param data
* 待归档数据
* @param path
* 归档数据的当前路径
* @param name
* 归档文件名
* @param taos
* TarArchiveOutputStream
* @throws Exception
*/
private static void archiveFile(File file, TarArchiveOutputStream taos,
String dir) throws Exception {
/**
* 归档内文件名定义
*
* <pre>
* 如果有多级目录，那么这里就需要给出包含目录的文件名
* 如果用WinRAR打开归档包，中文名将显示为乱码
* </pre>
*/
TarArchiveEntry entry = new TarArchiveEntry(dir + file.getName());
entry.setSize(file.length());
taos.putArchiveEntry(entry);
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
file));
int count;
byte data[] = new byte[BUFFER];
while ((count = bis.read(data, 0, BUFFER)) != -1) {
taos.write(data, 0, count);
}
bis.close();
taos.closeArchiveEntry();
}
/**
* 解归档
*
* @param srcFile
* @throws Exception
*/
public static void dearchive(File srcFile) throws Exception {
String basePath = srcFile.getParent();
dearchive(srcFile, basePath);
}
/**
* 解归档
*
* @param srcFile
* @param destFile
* @throws Exception
*/
public static void dearchive(File srcFile, File destFile) throws Exception {
TarArchiveInputStream tais = new TarArchiveInputStream(
new FileInputStream(srcFile));
dearchive(destFile, tais);
tais.close();
}
/**
* 解归档
*
* @param srcFile
* @param destPath
* @throws Exception
*/
public static void dearchive(File srcFile, String destPath)
throws Exception {
dearchive(srcFile, new File(destPath));
}
/**
* 文件 解归档
*
* @param destFile
* 目标文件
* @param tais
* ZipInputStream
* @throws Exception
*/
private static void dearchive(File destFile, TarArchiveInputStream tais)
throws Exception {
TarArchiveEntry entry = null;
while ((entry = tais.getNextTarEntry()) != null) {
// 文件
String dir = destFile.getPath() + File.separator + entry.getName();
File dirFile = new File(dir);
// 文件检查
fileProber(dirFile);
if (entry.isDirectory()) {
dirFile.mkdirs();
} else {
dearchiveFile(dirFile, tais);
}
}
}
/**
* 文件 解归档
*
* @param srcPath
* 源文件路径
*
* @throws Exception
*/
public static void dearchive(String srcPath) throws Exception {
File srcFile = new File(srcPath);
dearchive(srcFile);
}
/**
* 文件 解归档
*
* @param srcPath
* 源文件路径
* @param destPath
* 目标文件路径
* @throws Exception
*/
public static void dearchive(String srcPath, String destPath)
throws Exception {
File srcFile = new File(srcPath);
dearchive(srcFile, destPath);
}
/**
* 文件解归档
*
* @param destFile
* 目标文件
* @param tais
* TarArchiveInputStream
* @throws Exception
*/
private static void dearchiveFile(File destFile, TarArchiveInputStream tais)
throws Exception {
BufferedOutputStream bos = new BufferedOutputStream(
new FileOutputStream(destFile));
int count;
byte data[] = new byte[BUFFER];
while ((count = tais.read(data, 0, BUFFER)) != -1) {
bos.write(data, 0, count);
}
bos.close();
}
/**
* 文件探针
*
* <pre>
* 当父目录不存在时，创建目录！
* </pre>
*
* @param dirFile
*/
private static void fileProber(File dirFile) {
File parentFile = dirFile.getParentFile();
if (!parentFile.exists()) {
// 递归寻找上级目录
fileProber(parentFile);
parentFile.mkdir();
}
}
}
