com.facebook.presto.hive.$internal.jodd.io.FileUtil Maven / Gradle / Ivy
// Copyright (c) 2003-2014, Jodd Team (com.facebook.presto.hive.$internal.jodd.org). All Rights Reserved.
package com.facebook.presto.hive.$internal.jodd.io;
import com.facebook.presto.hive.$internal.jodd.JoddCore;
import com.facebook.presto.hive.$internal.jodd.util.StringPool;
import com.facebook.presto.hive.$internal.jodd.util.SystemUtil;
import com.facebook.presto.hive.$internal.jodd.util.URLDecoder;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.RandomAccessFile;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.FileFilter;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import java.util.ArrayList;
import static com.facebook.presto.hive.$internal.jodd.JoddCore.fileUtilParams;
/**
* File utilities.
*/
public class FileUtil {
private static final String MSG_NOT_A_DIRECTORY = "Not a directory: ";
private static final String MSG_CANT_CREATE = "Can't create: ";
private static final String MSG_NOT_FOUND = "Not found: ";
private static final String MSG_NOT_A_FILE = "Not a file: ";
private static final String MSG_ALREADY_EXISTS = "Already exists: ";
private static final String MSG_UNABLE_TO_DELETE = "Unable to delete: ";
/**
* Simple factory for File objects.
*/
private static File file(String fileName) {
return new File(fileName);
}
/**
* Simple factory for File objects.
*/
private static File file(File parent, String fileName) {
return new File(parent, fileName);
}
// ---------------------------------------------------------------- misc shortcuts
/**
* Checks if two files points to the same file.
*/
public static boolean equals(String file1, String file2) {
return equals(file(file1), file(file2));
}
/**
* Checks if two files points to the same file.
*/
public static boolean equals(File file1, File file2) {
try {
file1 = file1.getCanonicalFile();
file2 = file2.getCanonicalFile();
} catch (IOException ignore) {
return false;
}
return file1.equals(file2);
}
/**
* Converts file URLs to file. Ignores other schemes and returns null.
*/
public static File toFile(URL url) {
String fileName = toFileName(url);
if (fileName == null) {
return null;
}
return file(fileName);
}
/**
* Converts file to URL in a correct way.
* Returns null in case of error.
*/
public static URL toURL(File file) throws MalformedURLException {
return file.toURI().toURL();
}
/**
* Converts file URLs to file name. Accepts only URLs with 'file' protocol.
* Otherwise, for other schemes returns null.
*/
public static String toFileName(URL url) {
if ((url == null) || (url.getProtocol().equals("file") == false)) {
return null;
}
String filename = url.getFile().replace('/', File.separatorChar);
return URLDecoder.decode(filename, JoddCore.encoding);
}
// ---------------------------------------------------------------- mkdirs
/**
* Creates all folders at once.
* @see #mkdirs(java.io.File)
*/
public static void mkdirs(String dirs) throws IOException {
mkdirs(file(dirs));
}
/**
* Creates all folders at once.
*/
public static void mkdirs(File dirs) throws IOException {
if (dirs.exists()) {
if (dirs.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + dirs);
}
return;
}
if (dirs.mkdirs() == false) {
throw new IOException(MSG_CANT_CREATE + dirs);
}
}
/**
* Creates single folder.
* @see #mkdir(java.io.File)
*/
public static void mkdir(String dir) throws IOException {
mkdir(file(dir));
}
/**
* Creates single folders.
*/
public static void mkdir(File dir) throws IOException {
if (dir.exists()) {
if (dir.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + dir);
}
return;
}
if (dir.mkdir() == false) {
throw new IOException(MSG_CANT_CREATE + dir);
}
}
// ---------------------------------------------------------------- touch
/**
* @see #touch(java.io.File)
*/
public static void touch(String file) throws IOException {
touch(file(file));
}
/**
* Implements the Unix "touch" utility. It creates a new file
* with size 0 or, if the file exists already, it is opened and
* closed without modifying it, but updating the file date and time.
*/
public static void touch(File file) throws IOException {
if (file.exists() == false) {
StreamUtil.close(new FileOutputStream(file));
}
file.setLastModified(System.currentTimeMillis());
}
// ---------------------------------------------------------------- params
/**
* Creates new {@link FileUtilParams} instance by cloning current default params.
*/
public static FileUtilParams cloneParams() {
try {
return fileUtilParams.clone();
} catch (CloneNotSupportedException ignore) {
return null;
}
}
/**
* Creates new {@link FileUtilParams} instance with default values.
*/
public static FileUtilParams params() {
return new FileUtilParams();
}
// ---------------------------------------------------------------- copy file to file
/**
* @see #copyFile(java.io.File, java.io.File, FileUtilParams)
*/
public static void copyFile(String src, String dest) throws IOException {
copyFile(file(src), file(dest), fileUtilParams);
}
/**
* @see #copyFile(java.io.File, java.io.File, FileUtilParams)
*/
public static void copyFile(String src, String dest, FileUtilParams params) throws IOException {
copyFile(file(src), file(dest), params);
}
/**
* @see #copyFile(java.io.File, java.io.File, FileUtilParams)
*/
public static void copyFile(File src, File dest) throws IOException {
copyFile(src, dest, fileUtilParams);
}
/**
* Copies a file to another file with specified {@link FileUtilParams copy params}.
*/
public static void copyFile(File src, File dest, FileUtilParams params) throws IOException {
checkFileCopy(src, dest, params);
doCopyFile(src, dest, params);
}
private static void checkFileCopy(File src, File dest, FileUtilParams params) throws IOException {
if (src.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + src);
}
if (src.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + src);
}
if (equals(src, dest) == true) {
throw new IOException("Files '" + src + "' and '" + dest + "' are equal");
}
File destParent = dest.getParentFile();
if (destParent != null && destParent.exists() == false) {
if (params.createDirs == false) {
throw new IOException(MSG_NOT_FOUND + destParent);
}
if (destParent.mkdirs() == false) {
throw new IOException(MSG_CANT_CREATE + destParent);
}
}
}
/**
* Internal file copy when most of the pre-checking has passed.
*/
private static void doCopyFile(File src, File dest, FileUtilParams params) throws IOException {
if (dest.exists()) {
if (dest.isDirectory()) {
throw new IOException("Destination '" + dest + "' is a directory");
}
if (params.overwrite == false) {
throw new IOException(MSG_ALREADY_EXISTS + dest);
}
}
// do copy file
FileInputStream input = new FileInputStream(src);
try {
FileOutputStream output = new FileOutputStream(dest);
try {
StreamUtil.copy(input, output);
} finally {
StreamUtil.close(output);
}
} finally {
StreamUtil.close(input);
}
// done
if (src.length() != dest.length()) {
throw new IOException("Copy file failed of '" + src + "' to '" + dest + "' due to different sizes");
}
if (params.preserveDate) {
dest.setLastModified(src.lastModified());
}
}
// ---------------------------------------------------------------- copy file to directory
/**
* @see #copyFileToDir(java.io.File, java.io.File, FileUtilParams)
*/
public static File copyFileToDir(String src, String destDir) throws IOException {
return copyFileToDir(file(src), file(destDir), fileUtilParams);
}
/**
* @see #copyFileToDir(java.io.File, java.io.File, FileUtilParams)
*/
public static File copyFileToDir(String src, String destDir, FileUtilParams params) throws IOException {
return copyFileToDir(file(src), file(destDir), params);
}
/**
* @see #copyFileToDir(java.io.File, java.io.File, FileUtilParams)
*/
public static File copyFileToDir(File src, File destDir) throws IOException {
return copyFileToDir(src, destDir, fileUtilParams);
}
/**
* Copies a file to folder with specified copy params and returns copied destination.
*/
public static File copyFileToDir(File src, File destDir, FileUtilParams params) throws IOException {
if (destDir.exists() && destDir.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + destDir);
}
File dest = file(destDir, src.getName());
copyFile(src, dest, params);
return dest;
}
// ---------------------------------------------------------------- copy dir
public static void copyDir(String srcDir, String destDir) throws IOException {
copyDir(file(srcDir), file(destDir), fileUtilParams);
}
public static void copyDir(String srcDir, String destDir, FileUtilParams params) throws IOException {
copyDir(file(srcDir), file(destDir), params);
}
public static void copyDir(File srcDir, File destDir) throws IOException {
copyDir(srcDir, destDir, fileUtilParams);
}
/**
* Copies directory with specified copy params.
*/
public static void copyDir(File srcDir, File destDir, FileUtilParams params) throws IOException {
checkDirCopy(srcDir, destDir);
doCopyDirectory(srcDir, destDir, params);
}
private static void checkDirCopy(File srcDir, File destDir) throws IOException {
if (srcDir.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + srcDir);
}
if (srcDir.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + srcDir);
}
if (equals(srcDir, destDir) == true) {
throw new IOException("Source '" + srcDir + "' and destination '" + destDir + "' are equal");
}
}
private static void doCopyDirectory(File srcDir, File destDir, FileUtilParams params) throws IOException {
if (destDir.exists()) {
if (destDir.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + destDir);
}
} else {
if (params.createDirs == false) {
throw new IOException(MSG_NOT_FOUND + destDir);
}
if (destDir.mkdirs() == false) {
throw new IOException(MSG_CANT_CREATE + destDir);
}
if (params.preserveDate) {
destDir.setLastModified(srcDir.lastModified());
}
}
File[] files = srcDir.listFiles();
if (files == null) {
throw new IOException("Failed to list contents of: " + srcDir);
}
IOException exception = null;
for (File file : files) {
File destFile = file(destDir, file.getName());
try {
if (file.isDirectory()) {
if (params.recursive == true) {
doCopyDirectory(file, destFile, params);
}
} else {
doCopyFile(file, destFile, params);
}
} catch (IOException ioex) {
if (params.continueOnError == true) {
exception = ioex;
continue;
}
throw ioex;
}
}
if (exception != null) {
throw exception;
}
}
// ---------------------------------------------------------------- move file
public static void moveFile(String src, String dest) throws IOException {
moveFile(file(src), file(dest), fileUtilParams);
}
public static void moveFile(String src, String dest, FileUtilParams params) throws IOException {
moveFile(file(src), file(dest), params);
}
public static void moveFile(File src, File dest) throws IOException {
moveFile(src, dest, fileUtilParams);
}
public static void moveFile(File src, File dest, FileUtilParams params) throws IOException {
checkFileCopy(src, dest, params);
doMoveFile(src, dest, params);
}
private static void doMoveFile(File src, File dest, FileUtilParams params) throws IOException {
if (dest.exists()) {
if (dest.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + dest);
}
if (params.overwrite == false) {
throw new IOException(MSG_ALREADY_EXISTS + dest);
}
dest.delete();
}
final boolean rename = src.renameTo(dest);
if (!rename) {
doCopyFile(src, dest, params);
src.delete();
}
}
// ---------------------------------------------------------------- move file to dir
public static void moveFileToDir(String src, String destDir) throws IOException {
moveFileToDir(file(src), file(destDir), fileUtilParams);
}
public static void moveFileToDir(String src, String destDir, FileUtilParams params) throws IOException {
moveFileToDir(file(src), file(destDir), params);
}
public static void moveFileToDir(File src, File destDir) throws IOException {
moveFileToDir(src, destDir, fileUtilParams);
}
public static void moveFileToDir(File src, File destDir, FileUtilParams params) throws IOException {
if (destDir.exists() && destDir.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + destDir);
}
moveFile(src, file(destDir, src.getName()), params);
}
// ---------------------------------------------------------------- move dir
public static void moveDir(String srcDir, String destDir) throws IOException {
moveDir(file(srcDir), file(destDir));
}
public static void moveDir(File srcDir, File destDir) throws IOException {
checkDirCopy(srcDir, destDir);
doMoveDirectory(srcDir, destDir);
}
private static void doMoveDirectory(File src, File dest) throws IOException {
if (dest.exists()) {
if (dest.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + dest);
}
dest = file(dest, dest.getName());
dest.mkdir();
}
final boolean rename = src.renameTo(dest);
if (!rename) {
doCopyDirectory(src, dest, params());
deleteDir(src);
}
}
// ---------------------------------------------------------------- delete file
public static void deleteFile(String dest) throws IOException {
deleteFile(file(dest));
}
public static void deleteFile(File dest) throws IOException {
if (dest.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + dest);
}
if (dest.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + dest);
}
if (dest.delete() == false) {
throw new IOException(MSG_UNABLE_TO_DELETE + dest);
}
}
// ---------------------------------------------------------------- delete dir
public static void deleteDir(String dest) throws IOException {
deleteDir(file(dest), fileUtilParams);
}
public static void deleteDir(String dest, FileUtilParams params) throws IOException {
deleteDir(file(dest), params);
}
public static void deleteDir(File dest) throws IOException {
deleteDir(dest, fileUtilParams);
}
/**
* Deletes a directory.
*/
public static void deleteDir(File dest, FileUtilParams params) throws IOException {
cleanDir(dest, params);
if (dest.delete() == false) {
throw new IOException(MSG_UNABLE_TO_DELETE + dest);
}
}
public static void cleanDir(String dest) throws IOException {
cleanDir(file(dest), fileUtilParams);
}
public static void cleanDir(String dest, FileUtilParams params) throws IOException {
cleanDir(file(dest), params);
}
public static void cleanDir(File dest) throws IOException {
cleanDir(dest, fileUtilParams);
}
/**
* Cleans a directory without deleting it.
*/
public static void cleanDir(File dest, FileUtilParams params) throws IOException {
if (dest.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + dest);
}
if (dest.isDirectory() == false) {
throw new IOException(MSG_NOT_A_DIRECTORY + dest);
}
File[] files = dest.listFiles();
if (files == null) {
throw new IOException("Failed to list contents of: " + dest);
}
IOException exception = null;
for (File file : files) {
try {
if (file.isDirectory()) {
if (params.recursive == true) {
deleteDir(file, params);
}
} else {
file.delete();
}
} catch (IOException ioex) {
if (params.continueOnError == true) {
exception = ioex;
continue;
}
throw ioex;
}
}
if (exception != null) {
throw exception;
}
}
// ---------------------------------------------------------------- read/write chars
public static char[] readUTFChars(String fileName) throws IOException {
return readUTFChars(file(fileName));
}
/**
* Reads UTF file content as char array.
* @see UnicodeInputStream
*/
public static char[] readUTFChars(File file) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
long len = file.length();
if (len >= Integer.MAX_VALUE) {
len = Integer.MAX_VALUE;
}
UnicodeInputStream in = null;
try {
in = new UnicodeInputStream(new FileInputStream(file), null);
FastCharArrayWriter fastCharArrayWriter = new FastCharArrayWriter((int) len);
String encoding = in.getDetectedEncoding();
if (encoding == null) {
encoding = StringPool.UTF_8;
}
StreamUtil.copy(in, fastCharArrayWriter, encoding);
return fastCharArrayWriter.toCharArray();
} finally {
StreamUtil.close(in);
}
}
public static char[] readChars(String fileName) throws IOException {
return readChars(file(fileName), fileUtilParams.encoding);
}
public static char[] readChars(File file) throws IOException {
return readChars(file, fileUtilParams.encoding);
}
public static char[] readChars(String fileName, String encoding) throws IOException {
return readChars(file(fileName), encoding);
}
/**
* Reads file content as char array.
*/
public static char[] readChars(File file, String encoding) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
long len = file.length();
if (len >= Integer.MAX_VALUE) {
len = Integer.MAX_VALUE;
}
InputStream in = null;
try {
in = new FileInputStream(file);
if (encoding.startsWith("UTF")) {
in = new UnicodeInputStream(in, encoding);
}
FastCharArrayWriter fastCharArrayWriter = new FastCharArrayWriter((int) len);
StreamUtil.copy(in, fastCharArrayWriter, encoding);
return fastCharArrayWriter.toCharArray();
} finally {
StreamUtil.close(in);
}
}
public static void writeChars(File dest, char[] data) throws IOException {
outChars(dest, data, JoddCore.encoding, false);
}
public static void writeChars(String dest, char[] data) throws IOException {
outChars(file(dest), data, JoddCore.encoding, false);
}
public static void writeChars(File dest, char[] data, String encoding) throws IOException {
outChars(dest, data, encoding, false);
}
public static void writeChars(String dest, char[] data, String encoding) throws IOException {
outChars(file(dest), data, encoding, false);
}
protected static void outChars(File dest, char[] data, String encoding, boolean append) throws IOException {
if (dest.exists() == true) {
if (dest.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + dest);
}
}
Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dest, append), encoding));
try {
out.write(data);
} finally {
StreamUtil.close(out);
}
}
// ---------------------------------------------------------------- read/write string
public static String readUTFString(String fileName) throws IOException {
return readUTFString(file(fileName));
}
/**
* Detects optional BOM and reads UTF string from a file.
* If BOM is missing, UTF-8 is assumed.
* @see UnicodeInputStream
*/
public static String readUTFString(File file) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
long len = file.length();
if (len >= Integer.MAX_VALUE) {
len = Integer.MAX_VALUE;
}
UnicodeInputStream in = null;
try {
in = new UnicodeInputStream(new FileInputStream(file), null);
FastCharArrayWriter out = new FastCharArrayWriter((int) len);
String encoding = in.getDetectedEncoding();
if (encoding == null) {
encoding = StringPool.UTF_8;
}
StreamUtil.copy(in, out, encoding);
return out.toString();
} finally {
StreamUtil.close(in);
}
}
/**
* Detects optional BOM and reads UTF string from an input stream.
* If BOM is missing, UTF-8 is assumed.
*/
public static String readUTFString(InputStream inputStream) throws IOException {
UnicodeInputStream in = null;
try {
in = new UnicodeInputStream(inputStream, null);
FastCharArrayWriter out = new FastCharArrayWriter();
String encoding = in.getDetectedEncoding();
if (encoding == null) {
encoding = StringPool.UTF_8;
}
StreamUtil.copy(in, out, encoding);
return out.toString();
} finally {
StreamUtil.close(in);
}
}
public static String readString(String source) throws IOException {
return readString(file(source), fileUtilParams.encoding);
}
public static String readString(String source, String encoding) throws IOException {
return readString(file(source), encoding);
}
public static String readString(File source) throws IOException {
return readString(source, fileUtilParams.encoding);
}
/**
* Reads file content as string encoded in provided encoding.
* For UTF encoded files, detects optional BOM characters.
*/
public static String readString(File file, String encoding) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
long len = file.length();
if (len >= Integer.MAX_VALUE) {
len = Integer.MAX_VALUE;
}
InputStream in = null;
try {
in = new FileInputStream(file);
if (encoding.startsWith("UTF")) {
in = new UnicodeInputStream(in, encoding);
}
FastCharArrayWriter out = new FastCharArrayWriter((int) len);
StreamUtil.copy(in, out, encoding);
return out.toString();
} finally {
StreamUtil.close(in);
}
}
public static void writeString(String dest, String data) throws IOException {
outString(file(dest), data, fileUtilParams.encoding, false);
}
public static void writeString(String dest, String data, String encoding) throws IOException {
outString(file(dest), data, encoding, false);
}
public static void writeString(File dest, String data) throws IOException {
outString(dest, data, fileUtilParams.encoding, false);
}
public static void writeString(File dest, String data, String encoding) throws IOException {
outString(dest, data, encoding, false);
}
public static void appendString(String dest, String data) throws IOException {
outString(file(dest), data, fileUtilParams.encoding, true);
}
public static void appendString(String dest, String data, String encoding) throws IOException {
outString(file(dest), data, encoding, true);
}
public static void appendString(File dest, String data) throws IOException {
outString(dest, data, fileUtilParams.encoding, true);
}
public static void appendString(File dest, String data, String encoding) throws IOException {
outString(dest, data, encoding, true);
}
protected static void outString(File dest, String data, String encoding, boolean append) throws IOException {
if (dest.exists() == true) {
if (dest.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + dest);
}
}
FileOutputStream out = null;
try {
out = new FileOutputStream(dest, append);
out.write(data.getBytes(encoding));
} finally {
StreamUtil.close(out);
}
}
// ---------------------------------------------------------------- stream
public static void writeStream(File dest, InputStream in) throws IOException {
FileOutputStream out = null;
try {
out = new FileOutputStream(dest);
StreamUtil.copy(in, out);
} finally {
StreamUtil.close(out);
}
}
public static void writeStream(String dest, InputStream in) throws IOException {
FileOutputStream out = null;
try {
out = new FileOutputStream(dest);
StreamUtil.copy(in, out);
} finally {
StreamUtil.close(out);
}
}
// ---------------------------------------------------------------- read/write string lines
public static String[] readLines(String source) throws IOException {
return readLines(file(source), fileUtilParams.encoding);
}
public static String[] readLines(String source, String encoding) throws IOException {
return readLines(file(source), encoding);
}
public static String[] readLines(File source) throws IOException {
return readLines(source, fileUtilParams.encoding);
}
/**
* Reads lines from source files.
*/
public static String[] readLines(File file, String encoding) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
List list = new ArrayList();
InputStream in = null;
try {
in = new FileInputStream(file);
if (encoding.startsWith("UTF")) {
in = new UnicodeInputStream(in, encoding);
}
BufferedReader br = new BufferedReader(new InputStreamReader(in, encoding));
String strLine;
while ((strLine = br.readLine()) != null) {
list.add(strLine);
}
} finally {
StreamUtil.close(in);
}
return list.toArray(new String[list.size()]);
}
// ---------------------------------------------------------------- read/write bytearray
public static byte[] readBytes(String file) throws IOException {
return readBytes(file(file));
}
public static byte[] readBytes(File file) throws IOException {
if (file.exists() == false) {
throw new FileNotFoundException(MSG_NOT_FOUND + file);
}
if (file.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + file);
}
long len = file.length();
if (len >= Integer.MAX_VALUE) {
throw new IOException("File is larger then max array size");
}
byte[] bytes = new byte[(int) len];
RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r");
randomAccessFile.readFully(bytes);
randomAccessFile.close();
return bytes;
}
public static void writeBytes(String dest, byte[] data) throws IOException {
outBytes(file(dest), data, 0, data.length, false);
}
public static void writeBytes(String dest, byte[] data, int off, int len) throws IOException {
outBytes(file(dest), data, off, len, false);
}
public static void writeBytes(File dest, byte[] data) throws IOException {
outBytes(dest, data, 0, data.length, false);
}
public static void writeBytes(File dest, byte[] data, int off, int len) throws IOException {
outBytes(dest, data, off, len, false);
}
public static void appendBytes(String dest, byte[] data) throws IOException {
outBytes(file(dest), data, 0, data.length, true);
}
public static void appendBytes(String dest, byte[] data, int off, int len) throws IOException {
outBytes(file(dest), data, off, len, true);
}
public static void appendBytes(File dest, byte[] data) throws IOException {
outBytes(dest, data, 0, data.length, true);
}
public static void appendBytes(File dest, byte[] data, int off, int len) throws IOException {
outBytes(dest, data, off, len, true);
}
protected static void outBytes(File dest, byte[] data, int off, int len, boolean append) throws IOException {
if (dest.exists() == true) {
if (dest.isFile() == false) {
throw new IOException(MSG_NOT_A_FILE + dest);
}
}
FileOutputStream out = null;
try {
out = new FileOutputStream(dest, append);
out.write(data, off, len);
} finally {
StreamUtil.close(out);
}
}
// ---------------------------------------------------------------- equals content
public static boolean compare(String file1, String file2) throws IOException {
return compare(file(file1), file(file2));
}
/**
* Compare the contents of two files to determine if they are equal or
* not.
*
* This method checks to see if the two files are different lengths
* or if they point to the same file, before resorting to byte-by-byte
* comparison of the contents.
*
* Code origin: Avalon
*/
public static boolean compare(File file1, File file2) throws IOException {
boolean file1Exists = file1.exists();
if (file1Exists != file2.exists()) {
return false;
}
if (file1Exists == false) {
return true;
}
if ((file1.isFile() == false) || (file2.isFile() == false)) {
throw new IOException("Only files can be compared");
}
if (file1.length() != file2.length()) {
return false;
}
if (equals(file1, file2)) {
return true;
}
InputStream input1 = null;
InputStream input2 = null;
try {
input1 = new FileInputStream(file1);
input2 = new FileInputStream(file2);
return StreamUtil.compare(input1, input2);
} finally {
StreamUtil.close(input1);
StreamUtil.close(input2);
}
}
// ---------------------------------------------------------------- time
public static boolean isNewer(String file, String reference) {
return isNewer(file(file), file(reference));
}
/**
* Test if specified File is newer than the reference File.
*
* @param file the File of which the modification date must be compared
* @param reference the File of which the modification date is used
* @return true if the File exists and has been modified more
* recently than the reference File.
*/
public static boolean isNewer(File file, File reference) {
if (reference.exists() == false) {
throw new IllegalArgumentException("Reference file not found: " + reference);
}
return isNewer(file, reference.lastModified());
}
public static boolean isOlder(String file, String reference) {
return isOlder(file(file), file(reference));
}
public static boolean isOlder(File file, File reference) {
if (reference.exists() == false) {
throw new IllegalArgumentException("Reference file not found: " + reference);
}
return isOlder(file, reference.lastModified());
}
/**
* Tests if the specified File is newer than the specified time reference.
*
* @param file the File of which the modification date must be compared.
* @param timeMillis the time reference measured in milliseconds since the
* epoch (00:00:00 GMT, January 1, 1970)
* @return true if the File exists and has been modified after
* the given time reference.
*/
public static boolean isNewer(File file, long timeMillis) {
if (!file.exists()) {
return false;
}
return file.lastModified() > timeMillis;
}
public static boolean isNewer(String file, long timeMillis) {
return isNewer(file(file), timeMillis);
}
public static boolean isOlder(File file, long timeMillis) {
if (!file.exists()) {
return false;
}
return file.lastModified() < timeMillis;
}
public static boolean isOlder(String file, long timeMillis) {
return isOlder(file(file), timeMillis);
}
// ---------------------------------------------------------------- smart copy
public static void copy(String src, String dest) throws IOException {
copy(file(src), file(dest), fileUtilParams);
}
public static void copy(String src, String dest, FileUtilParams params) throws IOException {
copy(file(src), file(dest), params);
}
public static void copy(File src, File dest) throws IOException {
copy(src, dest, fileUtilParams);
}
/**
* Smart copy. If source is a directory, copy it to destination.
* Otherwise, if destination is directory, copy source file to it.
* Otherwise, try to copy source file to destination file.
*/
public static void copy(File src, File dest, FileUtilParams params) throws IOException {
if (src.isDirectory() == true) {
copyDir(src, dest, params);
return;
}
if (dest.isDirectory() == true) {
copyFileToDir(src, dest, params);
return;
}
copyFile(src, dest, params);
}
// ---------------------------------------------------------------- smart move
public static void move(String src, String dest) throws IOException {
move(file(src), file(dest), fileUtilParams);
}
public static void move(String src, String dest, FileUtilParams params) throws IOException {
move(file(src), file(dest), params);
}
public static void move(File src, File dest) throws IOException {
move(src, dest, fileUtilParams);
}
/**
* Smart move. If source is a directory, move it to destination.
* Otherwise, if destination is directory, move source file to it.
* Otherwise, try to move source file to destination file.
*/
public static void move(File src, File dest, FileUtilParams params) throws IOException {
if (src.isDirectory() == true) {
moveDir(src, dest);
return;
}
if (dest.isDirectory() == true) {
moveFileToDir(src, dest, params);
return;
}
moveFile(src, dest, params);
}
// ---------------------------------------------------------------- smart delete
public static void delete(String dest) throws IOException {
delete(file(dest), fileUtilParams);
}
public static void delete(String dest, FileUtilParams params) throws IOException {
delete(file(dest), params);
}
public static void delete(File dest) throws IOException {
delete(dest, fileUtilParams);
}
/**
* Smart delete of destination file or directory.
*/
public static void delete(File dest, FileUtilParams params) throws IOException {
if (dest.isDirectory()) {
deleteDir(dest, params);
return;
}
deleteFile(dest);
}
// ---------------------------------------------------------------- misc
/**
* Check if one file is an ancestor of second one.
*
* @param strict if false then this method returns true if ancestor
* and file are equal
* @return true if ancestor is parent of file; false otherwise
*/
public static boolean isAncestor(File ancestor, File file, boolean strict) {
File parent = strict ? getParentFile(file) : file;
while (true) {
if (parent == null) {
return false;
}
if (parent.equals(ancestor)) {
return true;
}
parent = getParentFile(parent);
}
}
/**
* Returns parent for the file. The method correctly
* processes "." and ".." in file names. The name
* remains relative if was relative before.
* Returns null if the file has no parent.
*/
public static File getParentFile(final File file) {
int skipCount = 0;
File parentFile = file;
while (true) {
parentFile = parentFile.getParentFile();
if (parentFile == null) {
return null;
}
if (StringPool.DOT.equals(parentFile.getName())) {
continue;
}
if (StringPool.DOTDOT.equals(parentFile.getName())) {
skipCount++;
continue;
}
if (skipCount > 0) {
skipCount--;
continue;
}
return parentFile;
}
}
public static boolean isFilePathAcceptable(File file, FileFilter fileFilter) {
do {
if (fileFilter != null && !fileFilter.accept(file)) {
return false;
}
file = file.getParentFile();
} while (file != null);
return true;
}
// ---------------------------------------------------------------- temp
public static File createTempDirectory() throws IOException {
return createTempDirectory(JoddCore.tempFilePrefix, null, null);
}
/**
* Creates temporary directory.
*/
public static File createTempDirectory(String prefix, String suffix) throws IOException {
return createTempDirectory(prefix, suffix, null);
}
/**
* Creates temporary directory.
*/
public static File createTempDirectory(String prefix, String suffix, File tempDir) throws IOException {
File file = createTempFile(prefix, suffix, tempDir);
file.delete();
file.mkdir();
return file;
}
/**
* Simple method that creates temp file.
*/
public static File createTempFile() throws IOException {
return createTempFile(JoddCore.tempFilePrefix, null, null, true);
}
/**
* Creates temporary file.
* If create is set to true file will be
* physically created on the file system. Otherwise, it will be created and then
* deleted - trick that will make temp file exist only if they are used.
*/
public static File createTempFile(String prefix, String suffix, File tempDir, boolean create) throws IOException {
File file = createTempFile(prefix, suffix, tempDir);
file.delete();
if (create) {
file.createNewFile();
}
return file;
}
/**
* Creates temporary file. Wraps java method and repeat creation several time
* if something fail.
*/
public static File createTempFile(String prefix, String suffix, File dir) throws IOException {
int exceptionsCount = 0;
while (true) {
try {
return File.createTempFile(prefix, suffix, dir).getCanonicalFile();
} catch (IOException ioex) { // fixes java.io.WinNTFileSystem.createFileExclusively access denied
if (++exceptionsCount >= 50) {
throw ioex;
}
}
}
}
// ---------------------------------------------------------------- symlink
/**
* Determines whether the specified file is a symbolic link rather than an actual file.
* Always returns false on Windows.
*/
public static boolean isSymlink(final File file) throws IOException {
if (SystemUtil.isHostWindows()) {
return false;
}
File fileInCanonicalDir;
if (file.getParent() == null) {
fileInCanonicalDir = file;
} else {
File canonicalDir = file.getParentFile().getCanonicalFile();
fileInCanonicalDir = new File(canonicalDir, file.getName());
}
return !fileInCanonicalDir.getCanonicalFile().equals(fileInCanonicalDir.getAbsoluteFile());
}
}