/*
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.extension;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import org.json.JSONArray;
import org.json.JSONException;
import com.polyvi.xface.extension.XExtensionResult.Status;
import com.polyvi.xface.plugin.api.XIWebContext;
import com.polyvi.xface.util.XPathResolver;
import com.polyvi.xface.util.XZipper;
public class XZipExt extends XExtension{
private enum ErrorCode {
NONE,
// 文件不存在.
FILE_NOT_EXIST,
// 压缩文件出错.
COMPRESS_FILE_ERROR,
// 解压文件出错.
UNZIP_FILE_ERROR,
// 文件路径错误
FILE_PATH_ERROR,
// 文件类型错误,不支持的文件类型
FILE_TYPE_ERROR,
}
private static final String COMMAND_ZIP = "zip";
private static final String COMMAND_ZIP_FILES = "zipFiles";
private static final String COMMAND_UNZIP = "unzip";
@Override
public void sendAsyncResult(String result) {
}
@Override
public boolean isAsync(String action) {
return true;
}
@Override
public XExtensionResult exec(String action,
JSONArray args, XCallbackContext callbackCtx) throws JSONException {
Status status = Status.ERROR;
ErrorCode errorCode = ErrorCode.NONE;
if(COMMAND_ZIP.equals(action)){
try{
boolean zipSuccess = zip(mWebContext, args.getString(0), args.getString(1));
if(!zipSuccess){
errorCode = ErrorCode.FILE_PATH_ERROR;
} else {
status = Status.OK;
return new XExtensionResult(status);
}
} catch (FileNotFoundException e) {
errorCode = ErrorCode.FILE_NOT_EXIST;
} catch (IOException e) {
errorCode = ErrorCode.COMPRESS_FILE_ERROR;
} catch (IllegalArgumentException e){
errorCode = ErrorCode.COMPRESS_FILE_ERROR;
}
} else if(COMMAND_ZIP_FILES.equals(action)){
try{
boolean zipSuccess = zipFiles(mWebContext, args.getJSONArray(0), args.getString(1));
if(!zipSuccess){
errorCode = ErrorCode.FILE_PATH_ERROR;
}else {
status = Status.OK;
return new XExtensionResult(status);
}
} catch (FileNotFoundException e) {
errorCode = ErrorCode.FILE_NOT_EXIST;
} catch (IOException e) {
errorCode = ErrorCode.COMPRESS_FILE_ERROR;
} catch (IllegalArgumentException e){
errorCode = ErrorCode.COMPRESS_FILE_ERROR;
}
} else if (COMMAND_UNZIP.equals(action)) {
try{
boolean zipSuccess = unzip(mWebContext, args.getString(0), args.getString(1));
if(!zipSuccess){
errorCode = ErrorCode.FILE_PATH_ERROR;
}else {
status = Status.OK;
return new XExtensionResult(status);
}
} catch (FileNotFoundException e) {
errorCode = ErrorCode.FILE_NOT_EXIST;
} catch (IOException e) {
errorCode = ErrorCode.UNZIP_FILE_ERROR;
} catch (IllegalArgumentException e){
errorCode = ErrorCode.UNZIP_FILE_ERROR;
}
}
return new XExtensionResult(status, errorCode.ordinal());
}
/**
* zip压缩方法(都限定在app的workspace下面)
* @param webContext app对象
* @param srcEntry 要压缩的源文件，可以是文件也可以是文件夹
* @param destZipFile 压缩成的目标文件，可以是test.zip也可以是a/b/c/test.zip
* @return 返回压缩是否成功
* true 成功
* false 失败, 路径非法
* */
private boolean zip(XIWebContext webContext, String srcEntry, String destZipFile)
throws NullPointerException, FileNotFoundException, IOException,
IllegalArgumentException {
XPathResolver srcPathResolver = new XPathResolver(srcEntry, webContext.getWorkSpace());
XPathResolver desPathResolver = new XPathResolver(destZipFile, webContext.getWorkSpace());
String srcPath = srcPathResolver.resolve();
String desPath = desPathResolver.resolve();
if(null == srcPath || null == desPath) {
return false;
}
new XZipper().zipDir(srcPath, desPath);
return true;
}
/**
* zip压缩多个可选文件方法(都限定在app的workspace下面)
* @param webContext app对象
* @param srcEntries 要压缩的源文件列表，可以是文件也可以是文件夹
* @param destZipFile 压缩成的目标文件，可以是test.zip也可以是a/b/c/test.zip
* @return 返回压缩是否成功
* true 成功
* false 失败, 路径非法
* @throws JSONException
* */
private boolean zipFiles(XIWebContext webContext, JSONArray srcEntries, String destZipFile)
throws NullPointerException, FileNotFoundException, IOException,
IllegalArgumentException, JSONException {
String[] paths = new String[srcEntries.length()];
for (int i = 0; i < srcEntries.length(); i++) {
XPathResolver pathResolver = new XPathResolver(srcEntries.getString(i), webContext.getWorkSpace());
paths[i] = pathResolver.resolve();
if(null == paths[i]) {
return false;
}
File srcFile = new File(paths[i]);
if (!srcFile.exists()) {
throw new FileNotFoundException();
}
}
XPathResolver desPathResolver = new XPathResolver(destZipFile, webContext.getWorkSpace());
String desPath = desPathResolver.resolve();
if(null == desPath) {
return false;
}
new XZipper().zipFiles(paths, desPath);
return true;
}
/**
* unzip解压缩方法(都限定在app的workspace下面)
* @param app app对象
* @param zipFilePath 要解压的源文件
* @param destPath 要解压的目标路径
* @return 返回解压缩是否成功
* true 成功
* false 失败, 路径非法
* */
private boolean unzip(XIWebContext webContext, String zipFilePath, String destPath)
throws FileNotFoundException, IOException {
XPathResolver srcPathResolver = new XPathResolver(zipFilePath, webContext.getWorkSpace());
XPathResolver desPathResolver = new XPathResolver(destPath, webContext.getWorkSpace());
String srcPath = srcPathResolver.resolve();
String desPath = desPathResolver.resolve();
if(null == srcPath || null == desPath) {
return false;
}
new XZipper().unzipFile( desPath, srcPath);
return true;
}
}