/**
* Returns true if the code was executed correctly. False if there was an error trying to share
* the file. If the file was not supposed to be shared, and was not shared, true would still be
* returned.
*/
private boolean shareTorrentFile(File torrentFile) {
if (torrentManager.isDownloadingTorrent(torrentFile)) {
return true;
}
if (!SharingSettings.SHARE_DOWNLOADED_FILES_IN_NON_SHARED_DIRECTORIES.getValue()) {
return true;
}
BTData btData = null;
FileInputStream torrentInputStream = null;
try {
torrentInputStream = new FileInputStream(torrentFile);
Map<?, ?> torrentFileMap = (Map<?, ?>) Token.parse(torrentInputStream.getChannel());
btData = new BTDataImpl(torrentFileMap);
} catch (IOException e) {
LOG.error("Error reading torrent file: " + torrentFile, e);
return false;
} finally {
FileUtils.close(torrentInputStream);
}
if (btData.isPrivate()) {
gnutellaFileList.remove(torrentFile);
return true;
}
File saveDir = SharingSettings.getSaveDirectory();
File torrentParent = torrentFile.getParentFile();
if (torrentParent.equals(saveDir)) {
// already in saveDir
gnutellaFileList.add(torrentFile);
return true;
}
final File tFile = getSharedTorrentMetaDataFile(btData);
if (tFile.equals(torrentFile)) {
gnutellaFileList.add(tFile);
return true;
}
gnutellaFileList.remove(tFile);
File backup = null;
if (tFile.exists()) {
backup = new File(tFile.getParent(), tFile.getName().concat(".bak"));
FileUtils.forceRename(tFile, backup);
}
if (FileUtils.copy(torrentFile, tFile)) {
gnutellaFileList.add(tFile);
} else {
if (backup != null) {
// restore backup
if (FileUtils.forceRename(backup, tFile)) {
gnutellaFileList.add(tFile);
}
}
}
return true;
}
public void loadDump(File dumpFile, File lineFile, File dumpInfoFile)
throws FileNotFoundException, IOException {
FileInputStream vertexStream = new FileInputStream(dumpFile);
MappedByteBuffer inVertex =
vertexStream.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, dumpFile.length());
vertices = inVertex.asFloatBuffer();
FileInputStream vertexLineStream = new FileInputStream(lineFile);
MappedByteBuffer inLine;
inLine = vertexLineStream.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, lineFile.length());
stripVertexCounts = inLine.asIntBuffer();
Scanner scanner = new Scanner(dumpInfoFile);
String line;
line = scanner.nextLine();
minX = Float.parseFloat(line);
line = scanner.nextLine();
maxX = Float.parseFloat(line);
line = scanner.nextLine();
minY = Float.parseFloat(line);
line = scanner.nextLine();
maxY = Float.parseFloat(line);
}
/**
* @param f
* @param numPruebas
* @throws FileNotFoundException
* @throws IOException
*/
private static void prueba1(File f, int numPruebas) throws FileNotFoundException, IOException {
FileInputStream fin;
fin = new FileInputStream(f);
// Open the file and then get a channel from the stream
FileChannel channel = fin.getChannel();
int size = (int) channel.size();
// Get the file's size and then map it into memory
ByteBuffer bbCorrect = channel.map(FileChannel.MapMode.READ_ONLY, 0, size);
// Chunkeo a 1KB
Random rnd = new Random();
long t1 = System.currentTimeMillis();
FileInputStream fin2 = new FileInputStream(f);
FileChannel channel2 = fin2.getChannel();
BigByteBuffer bb = new BigByteBuffer(channel2, FileChannel.MapMode.READ_ONLY, 1024 * 1024);
for (int i = 0; i < numPruebas; i++) {
int pos = rnd.nextInt(size - 10);
// pos = 2;
byte bCorrect = bbCorrect.get(pos);
byte bPrueba = bb.get(pos);
if (bCorrect != bPrueba) {
System.err.println("Error de lectura. " + bCorrect + " " + bPrueba);
} else {
// System.out.println("Correcto: pos=" + pos + " byte= " + bPrueba);
}
}
close(channel2, fin2, bb);
System.gc();
long t2 = System.currentTimeMillis();
System.out.println("T=" + (t2 - t1) + "mseconds");
}
public static void main(String[] args) throws IOException {
System.out.println("PWD: " + System.getProperty("user.dir"));
System.out.println("Input: " + args[0]);
FileInputStream fis = new FileInputStream(new File(args[0]));
System.out.println("input size: " + fis.getChannel().size());
PrintStructure ps = new PrintStructure();
ps.print(fis.getChannel(), 0, 0, 0);
}
public static void initialize() throws IOException, ConfigurationException {
try (FileInputStream fis = new FileInputStream("CHANGES.txt")) {
dataSource = ByteBuffer.allocateDirect((int) fis.getChannel().size());
while (dataSource.hasRemaining()) {
fis.getChannel().read(dataSource);
}
dataSource.flip();
}
SchemaLoader.loadSchema();
SchemaLoader.schemaDefinition("");
}
public static void copyFile(@NotNull File from, @NotNull File to, boolean append)
throws IOException {
FileInputStream in = null;
FileOutputStream out = null;
try {
out = createOutputStream(to, append);
in = new FileInputStream(from);
FileChannel readChannel = in.getChannel();
FileChannel writeChannel = out.getChannel();
long size = readChannel.size();
for (long position = 0; position < size; ) {
position += readChannel.transferTo(position, MB, writeChannel);
}
if (from.length() != to.length()) {
throw new IOException("Failed to copy full contents from " + from + " to " + to);
}
} finally {
close(in);
close(out);
}
}
/**
* @param startByte
* @param endByte
* @return
* @throws Exception
* @return true if all the bytes between in the file between startByte and endByte are null, false
* otherwise
*/
private boolean isFilePortionNull(int startByte, int endByte) throws IOException {
logger.config("Checking file portion:" + Hex.asHex(startByte) + ":" + Hex.asHex(endByte));
FileInputStream fis = null;
FileChannel fc = null;
try {
fis = new FileInputStream(file);
fc = fis.getChannel();
fc.position(startByte);
ByteBuffer bb = ByteBuffer.allocateDirect(endByte - startByte);
fc.read(bb);
while (bb.hasRemaining()) {
if (bb.get() != 0) {
return false;
}
}
} finally {
if (fc != null) {
fc.close();
}
if (fis != null) {
fis.close();
}
}
return true;
}
/*Function to read file */
public byte[] getFile(String fname) throws Exception {
/*FileInputStream and FileChannel for performance. */
FileInputStream in = new FileInputStream(fname);
FileChannel ch = in.getChannel();
MappedByteBuffer mb = ch.map(FileChannel.MapMode.READ_ONLY, 0L, ch.size());
long l = (new File(fname)).length();
/*Currently, supported max size is 20MB*/
if (l > MAX_SIZE) {
// errorMessage("File size too large. Max file size allowed
// is"+(Integer.MAX_VALUE/1000)+"KB");
return null;
}
byte[] barray = new byte[(int) l];
int nGet;
/*Read the file in to barray*/
while (mb.hasRemaining()) {
nGet = Math.min(mb.remaining(), Integer.MAX_VALUE);
mb.get(barray, 0, nGet);
}
if (in != null) in.close();
/*Return barray*/
return barray;
}
public void bt_resetAction(View v) {
// Log.d( SystemInfo.TIG, TAG + "::bt_resetAction() - RESET DATABASE" );
// TODO implement option to dump db data on SD card
try { // TODO this code is not enough tested - it shall rather show the idea!!!
File sd = Environment.getExternalStorageDirectory();
File data = Environment.getDataDirectory();
if (sd.canWrite()) {
String currentDBPath =
"//data//" + SystemInfo.TIG + ".db" + "//databases//" + SystemInfo.DB_NAME;
String backupDBPath = SystemInfo.DB_NAME;
File currentDB = new File(data, currentDBPath);
File backupDB = new File(sd, backupDBPath);
if (currentDB.exists()) {
fileInputStream = new FileInputStream(currentDB);
FileChannel src = fileInputStream.getChannel();
fileOutputStream = new FileOutputStream(backupDB);
FileChannel dst = fileOutputStream.getChannel();
dst.transferFrom(src, 0, src.size());
src.close();
dst.close();
}
}
} catch (Exception e) {
Log.w(SystemInfo.TIG, TAG + " saving database failed");
}
// reset DB (dialog)
AlertDialog.Builder yesnobox = new AlertDialog.Builder(this);
yesnobox.setMessage("Really remove all data?");
yesnobox.setTitle("Confirm Database Reset");
yesnobox.setPositiveButton(
"Yes",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
for (int idx = 0; idx < DB_list.size(); ++idx) {
DB_list.get(idx).data_reset();
}
// TODO rm
/*
DB.data_reset();
DB.data_reset(); // XXX
DB.data_reset();
DB.data_reset();
//*/
// refresh to battery view
displayData(SystemInfo.PLOT_BATTERY_COMMENT, SystemInfo.DB_TABLENAME_BATTERY);
}
});
yesnobox.setNegativeButton(
"No",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// do nothing
;
}
});
yesnobox.show();
}
public String getJsonFile() {
String jString = null;
try {
File dir = Environment.getExternalStorageDirectory();
File yourFile = new File(dir, "form.json");
FileInputStream stream = new FileInputStream(yourFile);
try {
FileChannel fc = stream.getChannel();
MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
/* Instead of using default, pass in a decoder. */
jString = Charset.defaultCharset().decode(bb).toString();
} finally {
stream.close();
}
jObject = new JSONObject(jString);
} catch (Exception e) {
e.printStackTrace();
}
return jObject.toString();
}
/**
* 根据文件名获取文件内容
*
* @param file 文件
* @param charsetName 字符集
* @return 文件内容，UTF-8编码。不会为null，可为空字符串
*/
public static String getFileContent(File file, String charsetName) {
if (file.isFile()) {
FileInputStream inf = null;
FileChannel inc = null;
StringBuilder content = new StringBuilder();
try {
inf = new FileInputStream(file);
inc = inf.getChannel();
Charset charset = Charset.forName(charsetName);
CharsetDecoder decoder = charset.newDecoder();
InputStreamReader reader = new InputStreamReader(inf, decoder);
char cbuf[] = new char[1024];
int count = 0;
while ((count = reader.read(cbuf)) > -1) {
content.append(cbuf, 0, count);
}
return content.toString();
} catch (UnmappableCharacterException e) {
System.err.println(
"The file's charset is not " + charsetName + ". file:" + file.getAbsolutePath());
// e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
close(inc);
close(inf);
}
} else {
// logger.warn("The file is not exists or is not a file!" + file.getAbsolutePath());
}
return "";
}
public String getFileBinaryBase64(String fileName) throws APIException {
if ((new File(fileName)).exists()) {
FileInputStream stream = null;
try {
stream = new FileInputStream(new File(fileName));
FileChannel fc = stream.getChannel();
MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
/* Instead of using default, pass in a decoder. */
byte[] b = new byte[bb.remaining()];
bb.get(b);
return Base64.encodeBytes(b);
} catch (Exception e) {
throw new APIException(fileName + " could not have its files extracte!");
} finally {
try {
stream.close();
} catch (Exception e) {
throw new APIException(fileName + " could not be closed!");
}
}
} else {
throw new APIException(fileName + " doesn't exist!");
}
}
/**
* 监测复制进度(留意buffer的大小，对速度有很大影响)
*
* @param source
* @param target
*/
public static void nioBufferCopy(File source, File target) {
FileChannel in = null;
FileChannel out = null;
FileInputStream inStream = null;
FileOutputStream outStream = null;
try {
inStream = new FileInputStream(source);
outStream = new FileOutputStream(target);
in = inStream.getChannel();
out = outStream.getChannel();
ByteBuffer buffer = ByteBuffer.allocate(4096);
while (in.read(buffer) != -1) {
buffer.flip();
out.write(buffer);
buffer.clear();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
close(inStream);
close(in);
close(outStream);
close(out);
}
}
/**
* 文件复制
*
* @param s
* @param t
*/
public static void fileCopy(File s, File t) {
t.delete();
FileInputStream fi = null;
FileOutputStream fo = null;
FileChannel in = null;
FileChannel out = null;
try {
fi = new FileInputStream(s);
fo = new FileOutputStream(t);
in = fi.getChannel(); // 得到对应的文件通道
out = fo.getChannel(); // 得到对应的文件通道
in.transferTo(0, in.size(), out); // 连接两个通道，并且从in通道读取，然后写入out通道
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
fi.close();
in.close();
fo.close();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/** @param args */
public static void main(String[] args) throws Exception {
// 读取的 地址
File fInput = new File(Config.inputAdd);
// 读取流
FileInputStream fis = new FileInputStream(fInput);
// 读取 管道
FileChannel inputChannel = fis.getChannel();
// lock方式 加 共享锁
System.out.println("主线程 在 控制文件fInput - 30秒 ， 当前时间子线程 - >" + new Date());
FileLock lock = inputChannel.lock(0, fInput.length(), true);
System.out.println("子线程 对 fInput 加上锁了。加上的时间为： " + new Date());
if (null != lock) {
System.out.println("子线程开始执行 锁里面的操作了");
} else {
System.out.println("按道理说 这句话 永远 不应该被打印 的.....");
}
lock.release();
// 释放资源
fis.close();
inputChannel.close();
}
public static ChannelByteIO stdIO() {
FileInputStream input = new FileInputStream(FileDescriptor.in);
FileOutputStream output = new FileOutputStream(FileDescriptor.out);
FileChannel in = input.getChannel();
FileChannel out = output.getChannel();
return new ChannelByteIO(in, out);
}
/**
* Esse metodo serve para copiar um ou mais arquivos para outro diretorio. Exemplo: copy(new
* String[]{"/home/andre/teste.txt","/home/andre/teste2.txt" },"/home/ariella/");
*
* @param filenames
* @param dest
* @throws TSApplicationException
*/
public void copy(String[] filenames, String dest) throws TSApplicationException {
String[] fileNamesNovo = new String[filenames.length];
FileOutputStream fout = null;
FileInputStream fin = null;
// Compress the files
try {
for (int i = 0; i < filenames.length; i++) {
String novoArquivo = filenames[i].substring(filenames[i].lastIndexOf("/") + 1);
fileNamesNovo[i] = dest + novoArquivo;
// Cria a stream para ler o arquivo original
fin = new FileInputStream(filenames[i]);
fout = new FileOutputStream(fileNamesNovo[i]);
// Cria a stream para gravar o arquivo de c�pia
// Usa as streams para criar os canais correspondentes
FileChannel in = fin.getChannel();
FileChannel outChannel = fout.getChannel();
// N�mero de bytes do arquivo original
long numbytes = in.size();
// Transfere todo o volume para o arquivo de c�pia.
in.transferTo(0, numbytes, outChannel);
}
} catch (FileNotFoundException e) {
throw new TSApplicationException(TSConstant.MENSAGEM_FILE_NOT_FOUND);
} catch (IOException e) {
throw new TSApplicationException(TSConstant.MENSAGEM_ERRO_ENTRADA_SAIDA);
}
}
public static void main(String args[]) {
try {
aServer asr = new aServer();
// file channel.
FileInputStream is = new FileInputStream("");
is.read();
FileChannel cha = is.getChannel();
ByteBuffer bf = ByteBuffer.allocate(1024);
bf.flip();
cha.read(bf);
// Path Paths
Path pth = Paths.get("", "");
// Files some static operation.
Files.newByteChannel(pth);
Files.copy(pth, pth);
// file attribute, other different class for dos and posix system.
BasicFileAttributes bas = Files.readAttributes(pth, BasicFileAttributes.class);
bas.size();
} catch (Exception e) {
System.err.println(e);
}
System.out.println("hello ");
}
public static String getMd5(File file) {
if (file == null || !file.exists()) {
return null;
}
String value = null;
FileInputStream in = null;
try {
in = new FileInputStream(file);
MappedByteBuffer byteBuffer =
in.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, file.length());
MessageDigest md5 = MessageDigest.getInstance("MD5");
md5.update(byteBuffer);
BigInteger bi = new BigInteger(1, md5.digest());
value = bi.toString(16);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (null != in) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return value;
}
public static String getFileMD5String(File file) {
FileInputStream in = null;
FileChannel ch = null;
MappedByteBuffer byteBuffer = null;
try {
in = new FileInputStream(file);
ch = in.getChannel();
byteBuffer = ch.map(FileChannel.MapMode.READ_ONLY, 0, file.length());
messagedigest.update(byteBuffer);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ch != null) {
try {
ch.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
IOUtils.closeQuietly(in);
}
return bufferToHex(messagedigest.digest());
}
// Read up to 'len' bytes of Value. Value should already be persisted to
// disk. A racing delete can trigger a failure where we get a null return,
// but no crash (although one could argue that a racing load&delete is a bug
// no matter what).
@Override
public byte[] load(Value v) {
long skip = 0;
Key k = v._key;
// Convert an arraylet chunk into a long-offset from the base file.
if (k._kb[0] == Key.ARRAYLET_CHUNK) {
skip = ValueArray.getChunkOffset(k); // The offset
k = ValueArray.getArrayKey(k); // From the base file key
}
if (k._kb[0] == Key.DVEC) {
skip = water.fvec.NFSFileVec.chunkOffset(k); // The offset
}
try {
FileInputStream s = null;
try {
s = new FileInputStream(getFileForKey(k));
FileChannel fc = s.getChannel();
fc.position(skip);
AutoBuffer ab = new AutoBuffer(fc, true, Value.NFS);
byte[] b = ab.getA1(v._max);
ab.close();
assert v.isPersisted();
return b;
} finally {
if (s != null) s.close();
}
} catch (IOException e) { // Broken disk / short-file???
H2O.ignore(e);
return null;
}
}
/**
* 读取到字节数组2
*
* @param filePath
* @return
* @throws IOException
*/
public static byte[] toByteArray2(String filePath) throws IOException {
File f = new File(filePath);
if (!f.exists()) {
throw new FileNotFoundException(filePath);
}
FileChannel channel = null;
FileInputStream fs = null;
try {
fs = new FileInputStream(f);
channel = fs.getChannel();
ByteBuffer byteBuffer = ByteBuffer.allocate((int) channel.size());
while ((channel.read(byteBuffer)) > 0) {
// do nothing
// System.out.println("reading");
}
return byteBuffer.array();
} catch (IOException e) {
e.printStackTrace();
throw e;
} finally {
try {
channel.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
fs.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
protected void loadFromByteBuffer(String fileName)
throws IOException, MaryConfigurationException {
/* Open the file */
FileInputStream fis = new FileInputStream(fileName);
FileChannel fc = fis.getChannel();
ByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
fis.close();
/* Load the Mary header */
hdr = new MaryHeader(bb);
if (hdr.getType() != MaryHeader.HALFPHONE_UNITFEATS) {
throw new MaryConfigurationException(
"File [" + fileName + "] is not a valid Mary Halfphone Features file.");
}
leftWeights = new FeatureDefinition(bb);
rightWeights = new FeatureDefinition(bb);
assert leftWeights.featureEquals(rightWeights)
: "Halfphone unit feature file contains incompatible feature definitions for left and right units -- this should not happen!";
featureDefinition = leftWeights; // one of them, for super class
int numberOfUnits = bb.getInt();
featureVectors = new FeatureVector[numberOfUnits];
for (int i = 0; i < numberOfUnits; i++) {
featureVectors[i] = featureDefinition.readFeatureVector(i, bb);
}
}
/**
* Internal copy file method.
*
* @param srcFile the validated source file, must not be <code>null</code>
* @param destFile the validated destination file, must not be <code>null</code>
* @throws IOException if an error occurs
*/
private static void doCopyFile(File srcFile, File destFile) throws IOException {
if (destFile.exists() && destFile.isDirectory()) {
throw new IOException("Destination '" + destFile + "' exists but is a directory");
}
FileInputStream fis = null;
FileOutputStream fos = null;
FileChannel input = null;
FileChannel output = null;
try {
fis = new FileInputStream(srcFile);
fos = new FileOutputStream(destFile);
input = fis.getChannel();
output = fos.getChannel();
long size = input.size();
long pos = 0;
long count = 0;
while (pos < size) {
count = (size - pos) > FIFTY_MB ? FIFTY_MB : (size - pos);
pos += output.transferFrom(input, pos, count);
}
} finally {
Streams.closeQuietly(output);
Streams.closeQuietly(fos);
Streams.closeQuietly(input);
Streams.closeQuietly(fis);
}
if (srcFile.length() != destFile.length()) {
throw new IOException(
"Failed to copy full contents from '" + srcFile + "' to '" + destFile + "'");
}
}
@Override
public void writeTo(
FileRange fileRange,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream)
throws IOException, WebApplicationException {
long fileSize = fileRange.getFile().length();
String contentRange =
"bytes " + fileRange.getBegin() + "-" + fileRange.getEnd() + "/" + fileSize;
long length = (fileRange.getEnd() - fileRange.getBegin()) + 1;
httpHeaders.putSingle("Content-Range", contentRange);
httpHeaders.putSingle("Content-Length", length);
FileInputStream fis = new FileInputStream(fileRange.getFile());
try {
if (fileRange.getBegin() > 0) {
fis.getChannel().position(fileRange.getBegin());
}
final byte[] buf = new byte[2048];
while (length > 0) {
int len = 2048 > length ? (int) length : 2048;
int read = fis.read(buf, 0, len);
if (read == -1) {
break;
}
entityStream.write(buf, 0, read);
length -= len;
}
} finally {
fis.close();
}
}
public ObjectStream<ChunkSample> create(String[] args) {
Parameters params = ArgumentParser.parse(args, Parameters.class);
language = params.getLang();
FileInputStream sampleDataIn = CmdLineUtil.openInFile(params.getData());
ObjectStream<String> lineStream =
new PlainTextByLineStream(sampleDataIn.getChannel(), params.getEncoding());
ADChunkBasedShallowParserSampleStream sampleStream =
new ADChunkBasedShallowParserSampleStream(
lineStream,
params.getFunctTags(),
params.getIsIncludePOSTags(),
params.getUseCGTags(),
params.getExpandME());
if (params.getStart() != null && params.getStart() > -1) {
sampleStream.setStart(params.getStart());
}
if (params.getEnd() != null && params.getEnd() > -1) {
sampleStream.setEnd(params.getEnd());
}
return sampleStream;
}
public void run(String[] args) {
String script = null;
try {
FileInputStream stream = new FileInputStream(new File(args[0]));
try {
FileChannel fc = stream.getChannel();
MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
script = Charset.availableCharsets().get("UTF-8").decode(bb).toString();
} finally {
stream.close();
}
} catch (Exception ex) {
ex.printStackTrace();
System.exit(1);
}
Context cx = Context.enter();
try {
ScriptableObject scope = cx.initStandardObjects();
scope.putConst("language", scope, "java");
scope.putConst("platform", scope, "android");
scope.put("util", scope, new Util(cx, scope));
cx.evaluateString(scope, script, args[0], 1, null);
} catch (Error ex) {
ex.printStackTrace();
System.exit(1);
} catch (Exception ex) {
ex.printStackTrace();
System.exit(1);
} finally {
Context.exit();
}
System.exit(0);
}
/**
* Based on <a href="http://www.screaming-penguin.com/node/7749">Backing up your Android SQLite
* database to the SD card</a>
*
* @param src
* @param dst
* @return true if success
* @throws IOException
*/
boolean copyFile(File src, File dst) throws IOException {
long sizeIn = -1;
long sizeCopied = 0;
boolean ok = false;
if (src != null && src.exists()) {
sizeIn = src.length();
if (!dst.createNewFile()) {
MyLog.e(this, "New file was not created: '" + dst.getCanonicalPath() + "'");
} else if (src.getCanonicalPath().compareTo(dst.getCanonicalPath()) == 0) {
MyLog.d(this, "Cannot copy to itself: '" + src.getCanonicalPath() + "'");
} else {
FileInputStream fileInputStream = null;
java.nio.channels.FileChannel inChannel = null;
FileOutputStream fileOutputStream = null;
java.nio.channels.FileChannel outChannel = null;
try {
fileInputStream = new FileInputStream(src);
inChannel = fileInputStream.getChannel();
fileOutputStream = new FileOutputStream(dst);
outChannel = fileOutputStream.getChannel();
sizeCopied = inChannel.transferTo(0, inChannel.size(), outChannel);
ok = (sizeIn == sizeCopied);
} finally {
DbUtils.closeSilently(outChannel);
DbUtils.closeSilently(fileOutputStream);
DbUtils.closeSilently(inChannel);
DbUtils.closeSilently(fileInputStream);
}
}
}
MyLog.d(this, "Copied " + sizeCopied + " bytes of " + sizeIn);
return ok;
}
private void copyWaveFile(String inFilename, String outFilename) {
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = RECORDER_SAMPLERATE;
int channels = 2;
long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;
byte[] data = new byte[bufferSize];
try {
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
// AppLog.logString("File size: " + totalDataLen);
WriteWaveFileHeader(out, totalAudioLen, totalDataLen, longSampleRate, channels, byteRate);
while (in.read(data) != -1) {
out.write(data);
}
in.close();
out.close();
} catch (FileNotFoundException e) {
Log.d("SAN", e.getMessage());
} catch (IOException e) {
Log.d("SAN", e.getMessage());
}
}
public static void copyFile(File srcFile, File destFile) throws Exception {
int bufferSize = 2048;
FileInputStream in = new FileInputStream(srcFile);
FileOutputStream out = new FileOutputStream(destFile);
FileChannel inChannel = in.getChannel();
FileChannel outChannel = out.getChannel();
ByteBuffer buffer = null;
int length = -1;
try {
while (true) {
if (inChannel.position() == inChannel.size()) {
// finish copying
break;
} else if (inChannel.size() - inChannel.position() < length) {
// copy last chunk of data
length = (int) (inChannel.size() - inChannel.position());
} else {
length = bufferSize;
}
buffer = ByteBuffer.allocateDirect(length);
inChannel.read(buffer);
buffer.flip();
outChannel.write(buffer);
outChannel.force(false);
}
} finally {
_close(inChannel);
_close(in);
_close(outChannel);
_close(out);
}
}
