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Copy pathYtfFileUtil.java
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Copy pathYtfFileUtil.java
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498 lines (453 loc) · 15.2 KB
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package com.yuantuan.ytwebview.utils;
import android.content.Context;
import android.content.res.Resources;
import android.os.Environment;
import android.util.Log;
import com.yuantuan.ytwebview.file.Question;
import com.yuantuan.ytwebview.params.YtfConstant;
import com.yuantuan.ytwebview.safety.EncryptionHandle;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
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.io.InputStreamReader;
import java.io.OutputStream;
import java.net.FileNameMap;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
/**
* =============================================================================
* [YTF] (C)2015-2099 Yuantuan Inc.
* Link http://www.ytframework.cn
* =============================================================================
*
* @author Like<[email protected]>
* @created 2016/7/7.
* @description 一些对数据存储，数据操作，SD卡操作有关的
* =============================================================================
*/
public class YtfFileUtil {
private static Context mContext;
/**
* 包名
*/
private static String packageName;
/**
* 获取资源
*/
private static Resources resources;
/**
* 单例
*/
private static YtfFileUtil ytfFileUtil;
private YtfFileUtil() {
}
public static void init(Context context) {
mContext = context;
packageName = mContext.getPackageName();
resources = mContext.getResources();
ytfFileUtil = new YtfFileUtil();
}
/**
* 单例模式
*
* @return
*/
public static YtfFileUtil getInstance() {
if (ytfFileUtil == null) {
throw new NullPointerException("请先初始化YtfFileUtil类");
} else {
return ytfFileUtil;
}
}
/**
* 判断SD卡是否正常挂载
*
* @return
*/
public static boolean SDCardIsWork() {
return Environment.getExternalStorageState().equals("mounted");
}
/**
* 获取内置SD卡的路径
*
* @return
*/
public static String getExternaStoragePath() {
return Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator;
}
/**
* 删除文件
*
* @param file
*/
public static void delete(File file) {
if (file.isFile()) {
file.delete();
} else {
File[] list = file.listFiles();
if (list != null && list.length != 0) {
File[] file1 = list;
for (int i = 0; i < list.length; ++i) {
File item = file1[i];
delete(item);
}
file.delete();
} else {
file.delete();
}
}
}
/**
* 计算文件大小
*
* @param file
* @return
*/
public static long computeDirOrFileSize(File file) {
if (file != null && file.exists()) {
if (file.isFile()) {
return file.length();
} else {
long length = 0L;
File[] list = file.listFiles();
if (list != null) {
for (int i = 0; i < list.length; ++i) {
File item = list[i];
if (item.isFile()) {
length += item.length();
} else {
length += computeDirOrFileSize(item);
}
}
}
return length;
}
} else {
return 0L;
}
}
/**
* 获取原生下面文件的文件流
*
* @param path
* @return
*/
public String getAssetsFileStream(String path) {
try {
InputStreamReader inputReader = new InputStreamReader(resources.getAssets().open(path));
if (inputReader != null) {
BufferedReader bufReader = new BufferedReader(inputReader);
String line = "";
String result = "";
while ((line = bufReader.readLine()) != null)
result += line;
return result;
} else {
throw new NullPointerException("未找到指定文件");
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 获取指定文件夹下面的文件内容
*
* @param strFilePath
* @return
*/
public String getFileString(String strFilePath) {
/**判断SD是否工作*/
if (!SDCardIsWork()) {
return "";
}
File file = new File(strFilePath);
BufferedReader reader;
String text = "";
try {
// FileReader f_reader = new FileReader(file);
// BufferedReader reader = new BufferedReader(f_reader);
FileInputStream fis = new FileInputStream(file);
BufferedInputStream in = new BufferedInputStream(fis);
in.mark(4);
byte[] first3bytes = new byte[3];
in.read(first3bytes);// 找到文档的前三个字节并自动判断文档类型。
in.reset();
L.d("格式：first3bytes[0]="+first3bytes[0]+",first3bytes[1]="+first3bytes[1]+",first3bytes[2]="+first3bytes[2]);
if (first3bytes[0] == (byte) 0xEF && first3bytes[1] == (byte) 0xBB
&& first3bytes[2] == (byte) 0xBF) {// utf-8
L.d("格式：utf-8");
reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
} else if (first3bytes[0] == (byte) 0xFF
&& first3bytes[1] == (byte) 0xFE) {
L.d("格式：unicode");
reader = new BufferedReader(
new InputStreamReader(in, "unicode"));
} else if (first3bytes[0] == (byte) 0xFE
&& first3bytes[1] == (byte) 0xFF) {
L.d("格式：utf-16be");
reader = new BufferedReader(new InputStreamReader(in,
"utf-16be"));
} else if (first3bytes[0] == (byte) 0xFF
&& first3bytes[1] == (byte) 0xFF) {
L.d("格式：utf-16le");
reader = new BufferedReader(new InputStreamReader(in,
"utf-16le"));
} else if (first3bytes[0] ==123 &&first3bytes[1]==13&&first3bytes[2]==10) {
/**UTF-8无BOM*/
reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
} else {
L.d("格式：GBK");
reader = new BufferedReader(new InputStreamReader(in, "GBK"));
}
String str = reader.readLine();
int index = 0;
int line = 0;
List<Question> questions = new ArrayList<>();
while (str != null) {
while (line < 3) {
text = text + str + "\r\n";
str = reader.readLine();
line++;
}
line = 0;
Question question = new Question();
String[] num = text.split("\r\n");
for (int i = 0; i < num.length; i++) {
if (i % 3 == 0) {
question.setId(index);
}
if (i % 3 == 2) {
question.setQuestion(num[i]);
}
if (i % 3 == 1) {
question.setAnwer(num[i]);
}
}
questions.add(question);
index++;
}
reader.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return text;
}
/**
* 读取SD卡中文本文件,无编码格式
*
* @param fileName
* @return
*/
public String readSDFile(String fileName) {
StringBuffer sb = new StringBuffer();
File file = new File(fileName);
try {
FileInputStream fis = new FileInputStream(file);
int c;
while ((c = fis.read()) != -1) {
sb.append((char) c);
}
fis.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
/**
* 写数据到SD
*
* @param str 写入字符串
* @param pathName 路径，路径样式/sdcard/test/
* @param name 名称
*/
public static void writeFileToSD(String str, String pathName, String name) {
/**判断SD是否工作*/
if (!SDCardIsWork()) {
return;
}
try {
File path = new File(pathName);
File file = new File(pathName + name);
if (!path.exists()) {
//L.d("TestFile", "Create the path:" + pathName);
path.mkdir();
}
if (!file.exists()) {
//L.d("TestFile", "Create the file:" + name);
file.createNewFile();
}
FileOutputStream stream = new FileOutputStream(file);
byte[] buf = str.getBytes();
stream.write(buf);
stream.close();
} catch (Exception e) {
Log.e("TestFile", "Error on writeFilToSD.");
e.printStackTrace();
}
}
/**
* 从SD卡读取文件
*
* @param path 文件路径+名称，路径样式/sdcard/test/
* @return
*/
public static String readFileToSD(String path) {
if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
File targetFile = new File(path);
String readedStr = "";
try {
if (!targetFile.exists()) {
targetFile.createNewFile();
return "No File error ";
} else {
InputStream in = new BufferedInputStream(new FileInputStream(targetFile));
BufferedReader br = new BufferedReader(new InputStreamReader(in, "UTF-8"));
String tmp;
while ((tmp = br.readLine()) != null) {
readedStr += tmp;
}
br.close();
in.close();
return readedStr;
}
} catch (Exception e) {
return e.toString();
}
} else {
return "SD Card error";
}
}
/**
* 复制assets目录下指定所有文件到指定目录下面
*
* @param assetDir
* @param dir
*/
public static void copyAssets(String assetDir, String dir) {
String[] files;
try {
// 获得Assets一共有几多文件
files = resources.getAssets().list(assetDir);
//L.d("<>_<>", "copyAssets: "+files.length);
} catch (IOException e1) {
return;
}
File mWorkingPath = new File(dir);
// 如果文件路径不存在
if (!mWorkingPath.exists()) {
// 创建文件夹
if (!mWorkingPath.mkdirs()) {
// 文件夹创建不成功时调用
}
}
for (int i = 0; i < files.length; i++) {
try {
// 获得每个文件的名字
String fileName = files[i];
// 根据路径判断是文件夹还是文件
if (!fileName.contains(".")) {
if (0 == assetDir.length()) {
copyAssets(fileName, dir + fileName + "/");
} else {
copyAssets(assetDir + "/" + fileName, dir + "/"
+ fileName + "/");
}
continue;
}
File outFile = new File(mWorkingPath, fileName);
if (outFile.exists())
outFile.delete();
InputStream in = null;
if (0 != assetDir.length())
in = mContext.getAssets().open(assetDir + "/" + fileName);
else
in = mContext.getAssets().open(fileName);
OutputStream out = new FileOutputStream(outFile);
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 从assets目录中复制整个文件夹内容
*
* @param context Context 使用CopyFiles类的Activity
* @param oldPath String 原文件路径 如：/aa
* @param newPath String 复制后路径 如：xx:/bb/cc
*/
public static void copyFilesFassets(Context context, String oldPath, String newPath) {
try {
String fileNames[] = context.getAssets().list(oldPath);//获取assets目录下的所有文件及目录名
//L.d("<>_<>", "copyAssets: "+fileNames.length);
if (fileNames.length > 0) {//如果是目录
File file = new File(newPath);
file.mkdirs();//如果文件夹不存在，则递归
for (String fileName : fileNames) {
copyFilesFassets(context, oldPath + "/" + fileName, newPath + "/" + fileName);
}
} else {//如果是文件
InputStream is = context.getAssets().open(oldPath);
FileOutputStream fos = new FileOutputStream(new File(newPath));
byte[] buffer = new byte[1024];
int byteCount = 0;
while ((byteCount = is.read(buffer)) != -1) {//循环从输入流读取 buffer字节
fos.write(buffer, 0, byteCount);//将读取的输入流写入到输出流
}
fos.flush();//刷新缓冲区
is.close();
fos.close();
}
} catch (Exception e) {
e.printStackTrace();
//如果捕捉到错误则通知UI线程
}
}
/**
* 获取包名
*
* @return
*/
public String getPackageName() {
return mContext.getPackageName();
}
/**
* 获取热修复路径
*
* @return
*/
public String getRepair() {
return YtfConstant.DATA_HEAD + getPackageName() + "/";
}
/**
* 获取Mime类型
*
* @param str
* @return
*/
public String getFileMimeType(String str) {
FileNameMap fileNameMap = URLConnection.getFileNameMap();
return fileNameMap.getContentTypeFor(str);
}
}