/*
Copyright 2012-2013, Polyvi Inc. (http://polyvi.github.io/openxface)
This program is distributed under the terms of the GNU General Public License.
This file is part of xFace.
xFace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
xFace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with xFace. If not, see <http://www.gnu.org/licenses/>.
*/
package com.polyvi.xface.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import android.content.Context;
/**
* zip压缩解压缩的类，以后可以在类中扩展带密码的加压解压的方法。
* */
public class XZipper {
private static final String CLASS_NAME = XZipper.class.getSimpleName();
/**
* 对目录或文件进行zip压缩
*
* @param srcFileURL
* 待压缩的目录或文件url
* @param zipFileName
* 要压缩成的zip文件名
*/
public void zipDir(String srcFileURL, String zipFileName)
throws NullPointerException, FileNotFoundException, IOException,
IllegalArgumentException {
if (XStringUtils.isEmptyString(srcFileURL)
|| XStringUtils.isEmptyString(zipFileName)) {
throw new IllegalArgumentException();
}
File srcFile = new File(srcFileURL);
if (!srcFile.exists()) {
throw new FileNotFoundException();
}
//当要压缩的是一个文件时候，如果要压缩成的文件名和它同名，则抛出异常
if (srcFile.isFile() && zipFileName.equals(srcFileURL)) {
throw new IllegalArgumentException();
}
File zipFile = new File(zipFileName);
File zipFileParent = zipFile.getParentFile();
if (!zipFileParent.exists()) {
zipFileParent.mkdirs();
}
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile));
String entryPath = "";
if (srcFile.isDirectory()) {
entryPath = srcFile.getName() + File.separator;
}
compressDir(srcFileURL, zos, entryPath);
zos.close();
}
/**
* 对多个目录或文件进行zip压缩
*
* @param srcFilePaths
* 待压缩的文件列表
* @param zipFileName
* 要压缩成的zip文件名
*/
public void zipFiles(String[] srcFilePaths, String zipFileName)
throws NullPointerException, FileNotFoundException, IOException,
IllegalArgumentException {
if (XStringUtils.isEmptyString(zipFileName)) {
throw new IllegalArgumentException();
}
for (String path:srcFilePaths) {
if (XStringUtils.isEmptyString(path)) {
throw new IllegalArgumentException();
}
File srcFile = new File(path);
if (!srcFile.exists()) {
throw new FileNotFoundException();
}
//当要压缩的是一个文件时候，如果要压缩成的文件名和它同名，则抛出异常
if (srcFile.isFile() && zipFileName.equals(path)) {
throw new IllegalArgumentException();
}
}
File zipFile = new File(zipFileName);
File zipFileParent = zipFile.getParentFile();
if (!zipFileParent.exists()) {
zipFileParent.mkdirs();
}
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile));
for (String path:srcFilePaths) {
File entry = new File(path);
String entryPath = "";
if (entry.isDirectory()) {
entryPath = entry.getName() + File.separator;
}
compressDir(path, zos, entryPath);
}
zos.close();
}
/**
* zip或者压缩一个文件或者文件夹
*
* @param srcFilePath
* 带压缩的文件或文件夹
* @param zos
* zip输出流 {@link ZipOutputStream}
* @param entryPath
* 要写入到zip文件中的文件或文件夹的路径
* @throws IOException
*/
private void compressDir(String srcFilePath, ZipOutputStream zos,
String entryPath) throws IOException {
File zipDir = new File(srcFilePath);
String[] dirList = zipDir.list();
if (null == dirList || 0 == dirList.length || zipDir.isFile()) {
writeToZip(zipDir, zos, entryPath);
} else {
for (String pathName : dirList){
File f = new File(zipDir, pathName);
if (f.isDirectory()) {
String filePath = f.getPath();
compressDir(filePath, zos, entryPath + f.getName() + File.separator);
continue;
}
writeToZip(f, zos, entryPath);
}
}
}
/**
* 将文件写入zip文件中
*
* @param srcFile
* 源文件
* @param zos
* zip输出流 {@link ZipOutputStream}
* @param entryPath
* 要写入到zip文件中的文件或文件夹的路径
* */
private void writeToZip(File srcFile, ZipOutputStream zos,
String entryPath) throws IOException {
ZipEntry anEntry = null;
if (srcFile.isDirectory()) {
anEntry = new ZipEntry(entryPath);
zos.putNextEntry(anEntry);
return;
}
anEntry = new ZipEntry(entryPath + srcFile.getName());
zos.putNextEntry(anEntry);
FileInputStream fis = new FileInputStream(srcFile);
byte[] readBuffer = new byte[XConstant.BUFFER_LEN];
int bytesIn = 0;
bytesIn = fis.read(readBuffer);
while (bytesIn != -1) {
zos.write(readBuffer, 0, bytesIn);
bytesIn = fis.read(readBuffer);
}
fis.close();
zos.closeEntry();
}
/**
* 解压zip文件
*
* @param targetPath
* 解压的目标路径
* @param zipFilePath
* zip包路径
*/
public void unzipFile(String targetPath, String zipFilePath)
throws FileNotFoundException, IOException {
File zipFile = new File(zipFilePath);
InputStream is = null;
is = new FileInputStream(zipFile);
if(!unzipFileFromStream(targetPath, is)) {
throw new IOException();
}
}
/**
* 从assets文件资源中读取zip包进行解压
*
* @param targetPath
* 解压的目标目录路径
* @param context
* @param assetFileName
* 要解压的assets资源文件名
*/
public boolean unzipFileFromAsset(String targetPath,
Context context, String assetFileName) throws IOException {
InputStream is = context.getAssets().open(assetFileName);
return unzipFileFromStream(targetPath, is);
}
/**
* 从输入流中读取zip文件数据进行解压
*
* @param targetPath
* 解压的目标路径
* @param is
* 源zip包输入流
* @return 解压是否成功
* @throws IOException
*/
private boolean unzipFileFromStream(String targetPath, InputStream is)
throws IOException {
File dirFile = new File(targetPath + File.separator);
if (!dirFile.exists()) {
dirFile.mkdirs();
}
ZipInputStream zis = new ZipInputStream(is);
ZipEntry entry = null;
while (null != (entry = zis.getNextEntry())) {
String zipFileName = entry.getName();
if (entry.isDirectory()) {
File zipFolder = new File(targetPath + File.separator
+ zipFileName);
if (!zipFolder.exists()) {
zipFolder.mkdirs();
}
} else {
File file = new File(targetPath + File.separator + zipFileName);
// 如果要解压的文件目标位置父目录不存在，创建对应目录
File parent = file.getParentFile();
if (!parent.exists()) {
parent.mkdirs();
}
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
} catch (FileNotFoundException e) {
XLog.d(CLASS_NAME,
"Can't write file: " + file.getAbsolutePath());
e.printStackTrace();
return false;
}
int readLen = 0;
byte buffer[] = new byte[XConstant.BUFFER_LEN];
while (-1 != (readLen = zis.read(buffer))) {
fos.write(buffer, 0, readLen);
}
fos.close();
}
}
zis.close();
is.close();
return true;
}
}