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/**
* Copyright (c) 2017 ZTE Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the Apache License, Version 2.0
* and the Eclipse Public License v1.0 which both accompany this distribution,
* and are available at http://www.eclipse.org/legal/epl-v10.html
* and http://www.apache.org/licenses/LICENSE-2.0
*
* Contributors:
* ZTE - initial API and implementation and/or initial documentation
*/
package org.onap.sdc.workflowdesigner.utils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* common utility class.
*
*/
public class FileCommonUtils {
private static final Logger logger = LoggerFactory.getLogger(FileCommonUtils.class);
private static final int KILO_BYTE = 1024; // 1K
private static final int MEGA_BYTE = 1024 * 1024; // 1M
private static final int GIGA_BYTE = 1024 * 1024 * 1024; // 1G
private static final int TRY_COUNT = 3;
/**
*
* @param srcAbsolutePath
* @param destAbsolutePath
*/
public static void rename(String srcAbsolutePath, String destAbsolutePath) {
File dest = new File(destAbsolutePath);
new File(srcAbsolutePath).renameTo(dest);
}
/**
*
* @param filePath
* @return
*/
public static String getFileName(String filePath) {
return new File(filePath).getName();
}
/**
*
* @param filePath
* @return
*/
public static String getFilePath(String filePath) {
return new File(filePath).getParent();
}
/**
* @param ins
*/
public static void closeInputStream(InputStream ins) {
if (ins != null) {
try {
ins.close();
} catch (IOException e) {
logger.info("Close InputStream failed.", e);
}
}
}
/**
*
* @param os
*/
public static void closeOutputStream(OutputStream os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
logger.info("Close OutputStream failed.", e);
}
}
}
/**
* @param reader
*/
public static void closeReader(Reader reader) {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
logger.info("Close Reader failed.", e);
}
}
}
/**
*
* @param writer
*/
public static void closeWriter(Writer writer) {
if (writer != null) {
try {
writer.close();
} catch (IOException e) {
logger.info("Close Writer failed.", e);
}
}
}
/**
* @param sourecePath
* @param targetPath
* @throws IOException
*/
public static void copy(Path sourecePath, Path targetPath) throws IOException {
if (!sourecePath.toFile().exists()) {
return;
}
if (Files.isDirectory(sourecePath)) {
List<Path> paths = list(sourecePath);
for (Path path : paths) {
copy(path, targetPath.resolve(path.getFileName()));
}
return;
}
if (!targetPath.getParent().toFile().exists()) {
targetPath.getParent().toFile().mkdirs();
}
Files.copy(sourecePath, targetPath, StandardCopyOption.REPLACE_EXISTING);
}
/**
* create folder.
*
* @param path folder path to create
* @return boolean
*/
public static boolean createDirectory(String path) {
File folder = new File(path);
int tryCount = 0;
while (tryCount < FileCommonUtils.TRY_COUNT) {
tryCount++;
if (!folder.exists() && !folder.mkdirs()) {
continue;
} else {
return true;
}
}
return folder.exists();
}
/**
* delete the file and file directory.
*
* @param file file
* @return boolean
*/
public static void delete(File file) {
logger.info("delete file = {}", file);
if (file.isDirectory()) {
String[] children = file.list();
if (children != null) {
for (int i = 0; i < children.length; i++) {
delete(new File(file, children[i]));
}
}
}
deleteFile(file);
}
/**
*
* @param file
*/
public static void deleteFile(File file) {
logger.info("deleteFile file = {}", file);
try {
FileUtils.forceDelete(file);
} catch (IOException e) {
logger.warn("deleteFile error. {}", file, e);
}
}
public static String formatFileSize(double fileLength, int fileUnit) {
DecimalFormat format = new DecimalFormat("#0.00");
return format.format(fileLength / fileUnit) + "M";
}
/**
* get file size.
*
* @param file file which to get the size
* @param fileUnit file unit
* @return String file size
*/
public static String getFileSize(File file, int fileUnit) {
String fileSize = "";
DecimalFormat format = new DecimalFormat("#0.00");
if (file.exists()) {
fileSize = format.format((double) file.length() / fileUnit) + "M";
}
return fileSize;
}
/**
* get file size by content.
*
* @param contentRange content range
* @return String
*/
public static String getFileSizeByContent(String contentRange) {
String size =
contentRange.substring(contentRange.indexOf("/") + 1, contentRange.length()).trim();
return formatFileSize(Double.parseDouble(size), MEGA_BYTE);
}
/**
* get the size format according file size.
*
* @param fileSize file size
* @return size format
*/
public static String getFormatFileSize(long fileSize) {
if (fileSize >= GIGA_BYTE) {
return String.format("%.1f GB", (float) fileSize / (long) GIGA_BYTE);
} else if (fileSize >= MEGA_BYTE) {
float fi = (float) fileSize / (long) MEGA_BYTE;
return String.format(fi > 100 ? "%.0f MB" : "%.1f MB", fi);
} else if (fileSize >= KILO_BYTE) {
float fi = (float) fileSize / (long) KILO_BYTE;
return String.format(fi > 100 ? "%.0f KB" : "%.1f KB", fi);
} else {
return String.format("%d B", fileSize);
}
}
public static long getFileSize(String path) {
return getFileSize(new File(path));
}
/**
*
* @param file
* @return
*/
public static long getFileSize(final File file) {
if (file.isFile()) {
return file.length();
}
final File[] children = file.listFiles();
long total = 0;
if (children != null) {
for (final File child : children) {
total += getFileSize(child);
}
}
return total;
}
/**
*
* @param path
* @return
* @throws IOException
*/
public static List<Path> list(Path path) throws IOException {
if (!path.toFile().isDirectory()) {
return new ArrayList<>();
}
List<Path> list = new ArrayList<>();
DirectoryStream<Path> ds = Files.newDirectoryStream(path);
for (Path p : ds) {
list.add(p);
}
return list;
}
/**
* @param path
* @return
* @throws IOException
*/
public static List<String> listFileName(Path path) throws IOException {
List<String> list = new ArrayList<>();
DirectoryStream<Path> ds = Files.newDirectoryStream(path);
for (Path p : ds) {
list.add(p.getFileName().toString());
}
return list;
}
/**
*
* @param srcPath
* @param destPath
* @throws IOException
*/
public static void moveDirectory(String srcPath, String destPath) throws IOException {
File destDirectory = new File(destPath);
File srcDirectory = new File(srcPath);
FileUtils.deleteDirectory(destDirectory);
FileUtils.copyDirectory(srcDirectory, destDirectory);
FileUtils.deleteDirectory(srcDirectory);
}
/**
*
* @param ins
* @return
* @throws IOException
*/
public static String[] readLines(InputStream ins) throws IOException {
InputStreamReader insReader = new InputStreamReader(ins);
BufferedReader reader = new BufferedReader(insReader);
List<String> lineList = new ArrayList<>();
String line;
try {
while ((line = reader.readLine()) != null) {
lineList.add(line);
}
} finally {
closeReader(reader);
closeReader(insReader);
}
return lineList.toArray(new String[0]);
}
/**
*
* @param ins
* @return
* @throws IOException
*/
public static String readString(InputStream ins) throws IOException {
return IOUtils.toString(ins, "UTF-8");
}
/**
*
* @param filePath
* @return
* @throws IOException
*/
public static String readString(String filePath) throws IOException {
InputStream ins = null;
try {
ins = Files.newInputStream(Paths.get(filePath));
return readString(ins);
} finally {
closeInputStream(ins);
}
}
/**
*
* @param ins
* @param path
* @param fileName
* @return
* @throws IOException
*/
public static String saveFile(InputStream ins, String path, String fileName) throws IOException {
File tmpPath = new File(path);
if (!tmpPath.exists()) {
tmpPath.mkdirs();
}
File file = new File(path + File.separator + fileName);
OutputStream os = null;
try {
int read = 0;
byte[] bytes = new byte[1024];
os = new FileOutputStream(file, true);
while ((read = ins.read(bytes)) != -1) {
os.write(bytes, 0, read);
}
os.flush();
return file.getAbsolutePath();
} finally {
closeOutputStream(os);
}
}
/**
* @param s
* @throws IOException
* @throws UnsupportedEncodingException
*/
public static void write(String s, String fileName)
throws UnsupportedEncodingException, IOException {
FileOutputStream out = null;
try {
out = new FileOutputStream(fileName);
out.write(s.getBytes("UTF-8"));
out.close();
} finally {
closeOutputStream(out);
}
}
/**
* @param ss
* @param fileName
* @throws IOException
* @throws UnsupportedEncodingException
*/
public static void write(String[] ss, String fileName)
throws UnsupportedEncodingException, IOException {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < ss.length; i++) {
sb.append(ss[i]).append(System.lineSeparator());
}
write(sb.toString(), fileName);
}
/**
*
* @param rootPath
* @param more
* @return
*/
public static String buildAbsolutePath(String rootPath, String... more) {
Path absolutePath = Paths.get(rootPath, more);
return absolutePath.toFile().getAbsolutePath();
}
}
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