/**
* Writes the Item's creation date to the Items Random Access File
*
* @param file - the Item's Random Access File
*/
private void writeCreationDate(RandomAccessFile file) {
try {
file.writeShort(getCreationDate().get(Calendar.YEAR));
file.writeByte(getCreationDate().get(Calendar.MONTH));
file.writeByte(getCreationDate().get(Calendar.DAY_OF_MONTH));
} catch (Exception e) {
}
}
/**
* Writes the Item location to the Items Random Access File
*
* @param file - the Item's Random Access File
*/
private void writeLocationToFile(RandomAccessFile file) {
try {
file.writeByte(1); // Write the warehouse number
file.writeByte(getLocation().getAisle()); // Write the aisle number
file.writeByte(getLocation().getColumn()); // Write the column number
file.writeChar(getLocation().getRow()); // Write the row number
} catch (Exception e) {
}
}
public int getOrCreateField(Field f) throws IOException, ReflectiveOperationException {
if (fieldIdMapping.size() > f.getFieldId()) {
return fieldIdMapping.get(f.getFieldId()).getFieldId();
}
RandomAccessFile file = null;
try {
file = new RandomAccessFile(filePath, "rw");
file.seek(file.length());
f.setFieldId(fieldIdMapping.size());
file.writeUTF(f.getFieldName());
int typeId = fieldTypeStore.getOrCreateTypeId(f.getFieldType());
file.writeByte(typeId);
BitSet bitSet = new BitSet(8);
bitSet.set(BIT_INDEX_INDEXED, f.isIndexed());
bitSet.set(BIT_INDEX_STORED, f.isStored());
file.write(bitSet.toByteArray());
// Add to indexes
fieldIdMapping.add(f);
fieldNameMapping.put(f.getFieldName(), f);
return f.getFieldId();
} finally {
if (file != null) {
file.close();
}
}
}
/**
* @param skip 跳过多少过字节进行插入数据
* @param str 要插入的字符串
* @param fileName 文件路径
*/
public static void writeSkip(long skip, String str, String fileName) throws IOException {
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(fileName, "rw");
if (skip < 0 || skip > raf.length()) {
System.out.println("跳过字节数无效");
return;
}
byte[] b = str.getBytes();
raf.setLength(raf.length() + b.length);
for (long i = raf.length() - 1; i > b.length + skip - 1; i--) {
raf.seek(i - b.length);
byte temp = raf.readByte();
raf.seek(i);
raf.writeByte(temp);
}
raf.seek(skip);
raf.write(b);
} catch (Exception e) {
throw new IOException(e);
} finally {
try {
raf.close();
} catch (IOException e) {
throw e;
}
}
}
public void saveMetaData() throws IOException {
pageFile.seek(offset);
pageFile.writeInt(nextPageId);
pageFile.writeInt(currentFill);
pageFile.writeInt(bloomfilter);
pageFile.writeByte(type);
}
/* write a chunk data to the region file at specified sector number */
private void write(int sectorNumber, byte[] data, int length) throws IOException {
debugln(" " + sectorNumber);
file.seek(sectorNumber * SECTOR_BYTES);
file.writeInt(length + 1); // chunk length
file.writeByte(VERSION_DEFLATE); // chunk version number
file.write(data, 0, length); // chunk data
}
// see DbFile.java for javadocs
public void writePage(Page page) throws IOException {
// some code goes here
long offset = page.getId().pageNumber() * BufferPool.PAGE_SIZE;
byte[] data = page.getPageData();
try {
raf.seek(offset);
for (int i = 0; i < data.length; i++) {
raf.writeByte(data[i]);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
/**
* Corrupt the specified file. Some random bytes within the file will be changed to some random
* values.
*
* @throws IllegalArgumentException if the given file is not a file
* @throws IOException if an IOException occurs while reading or writing the file
*/
public static void corruptFile(File file) throws IOException {
if (!file.isFile()) {
throw new IllegalArgumentException("Given argument is not a file:" + file);
}
RandomAccessFile raf = new RandomAccessFile(file, "rws");
Random random = new Random();
for (long i = 0; i < raf.length(); i++) {
raf.seek(i);
if (random.nextBoolean()) {
raf.writeByte(random.nextInt());
}
}
raf.close();
}
public void commitChanges() throws IOException, RuntimeException {
Throwable t = null;
RandomAccessFile dataFile = null;
try {
try {
dataFile = new RandomAccessFile(filePath, "rw");
} catch (FileNotFoundException e) {
throw new RuntimeException(filePath + " can't get access to file", e);
}
if (data == null || data.isEmpty()) {
closeDataFile(dataFile);
Shell sh = new Shell(tablePath, false);
if (sh.rm(filePath) != Shell.ExitCode.OK) {
throw new RuntimeException(filePath + " can't delete file");
}
exists = false;
return;
}
int offset = 0;
Set<Map.Entry<String, Storeable>> mySet = data.entrySet();
for (Map.Entry<String, Storeable> myEntry : mySet) {
offset += getLength(myEntry.getKey()) + 1 + 4;
}
int currOffset = offset;
dataFile.setLength(0);
dataFile.seek(0);
for (Map.Entry<String, Storeable> myEntry : mySet) {
dataFile.write(myEntry.getKey().getBytes());
dataFile.writeByte(0);
dataFile.writeInt(currOffset);
currOffset += getLength(table.getProvider().serialize(table, myEntry.getValue()));
}
for (Map.Entry<String, Storeable> myEntry : mySet) {
dataFile.write(table.getProvider().serialize(table, myEntry.getValue()).getBytes());
}
} catch (RuntimeException e5) {
t = e5;
throw e5;
} finally {
try {
closeDataFile(dataFile);
} catch (Throwable e6) {
if (t != null) {
t.addSuppressed(e6);
}
}
}
}
private static void MAPPER_SaveBinds() {
String fileName = JavaMapper.mapperfile;
try {
RandomAccessFile saveFile = new RandomAccessFile(fileName, "rw");
for (CEvent event : events) {
saveFile.write(event.GetName().getBytes());
for (CBind bind : event.bindlist) {
String buf = " \"" + bind.ConfigName() + bind.AddFlags() + "\"";
saveFile.write(buf.getBytes());
}
saveFile.writeByte((byte) '\n');
}
saveFile.close();
// change_action_text("Mapper file saved.",CLR_WHITE);
} catch (Exception e) {
Log.log_msg("Can't open " + fileName + " for saving the mappings");
}
}
/**
* Writes the initial data chunks that start the wave file. Prepares file for data samples to
* written.
*
* @param comment ignored by the WAV header.
* @exception IOException
*/
public void writeHeader(final String comment) throws IOException {
/* writes the RIFF chunk indicating wave format */
byte[] chkid = "RIFF".getBytes();
raf.write(chkid, 0, chkid.length);
writeInt(raf, 0); /* total length must be blank */
chkid = "WAVE".getBytes();
raf.write(chkid, 0, chkid.length);
/* format subchunk: of size 16 */
chkid = "fmt ".getBytes();
raf.write(chkid, 0, chkid.length);
if (isPCM) {
writeInt(raf, 16); // Size of format chunk
writeShort(raf, WAVE_FORMAT_PCM); // Format tag: PCM
writeShort(raf, (short) channels); // Number of channels
writeInt(raf, sampleRate); // Sampling frequency
writeInt(raf, sampleRate * channels * 2); // Average bytes per second
writeShort(raf, (short) (channels * 2)); // Blocksize of data
writeShort(raf, (short) 16); // Bits per sample
} else {
int length = comment.length();
writeInt(raf, (short) (18 + 2 + 80 + length)); // Size of format chunk
writeShort(raf, WAVE_FORMAT_SPEEX); // Format tag: Speex
writeShort(raf, (short) channels); // Number of channels
writeInt(raf, sampleRate); // Sampling frequency
writeInt(
raf,
(calculateEffectiveBitrate(mode, channels, quality) + 7)
>> 3); // Average bytes per second
writeShort(raf, (short) calculateBlockSize(mode, channels, quality)); // Blocksize of data
writeShort(raf, (short) quality); // Bits per sample
writeShort(raf, (short) (2 + 80 + length)); // The count in bytes of the extra size
raf.writeByte(0xff & 1); // ACM major version number
raf.writeByte(0xff & 0); // ACM minor version number
raf.write(buildSpeexHeader(sampleRate, mode, channels, vbr, nframes));
raf.writeBytes(comment);
}
/* write the start of data chunk */
chkid = "data".getBytes();
raf.write(chkid, 0, chkid.length);
writeInt(raf, 0);
}
/** write the first 32 bytes to file */
public void write(RandomAccessFile ff) throws tinySQLException {
try {
// -----------------------------
// write out the primary header
ff.seek(FLAG_INDEX);
ff.writeByte((byte) 0x03);
setTimestamp(ff); // set current date YY MM DD (dBase is not Y2K save)
setNumRecords(ff, 0);
setHeaderLength(ff, numFields);
setRecordLength(ff, recordLength);
setReserved(ff);
} catch (Exception e) {
throw new tinySQLException(e.getMessage());
}
}
private static void writeFile(String sFile, byte[] bytes) {
byte[] emptybuf = null;
try {
RandomAccessFile file = new RandomAccessFile(new File(sFile), "rw");
file.seek(file.length()); // append
int i = 0;
for (i = 0; i < bytes.length; i++) {
file.writeByte(bytes[i]);
}
log("Wrote " + i + " bytes to " + sFile);
file.close();
return;
} catch (IOException es) {
log("File not found.");
}
return;
}
public void export_song_to_file(int a_slot, String a_file_path) {
if (a_slot < 0 || a_slot > 0x1f) {
return;
}
RandomAccessFile m_file = null;
try {
m_file = new RandomAccessFile(a_file_path, "rw");
int l_file_name_ptr = g_file_name_start_ptr + a_slot * g_file_name_length;
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr++]);
m_file.writeByte(m_work_ram[l_file_name_ptr]);
int l_file_version_ptr = g_file_version_start_ptr + a_slot;
m_file.writeByte(m_work_ram[l_file_version_ptr]);
int l_block_id = 0;
int l_block_alloc_table_ptr = g_block_alloc_table_start_ptr;
while (l_block_id < getTotalBlockCount()) {
if (a_slot == m_work_ram[l_block_alloc_table_ptr++]) {
int l_block_ptr = g_block_start_ptr + l_block_id * g_block_size;
for (int l_byte_index = 0; l_byte_index < g_block_size; l_byte_index++) {
m_file.writeByte(m_work_ram[l_block_ptr++]);
}
}
l_block_id++;
}
m_file.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] argv) {
String victim = "Beginner"; // What's the name of the target?
int fpointer = 0; // Where are we in the target class file?
// How on earth do I use this thing?
if (argv.length != 0) {
System.out.println("Try \"java Attacker" + "\".");
System.exit(1);
}
// If the target isn't writeable, then forget the whole deal.
File testit = new File(victim + ".class");
if (!(testit.canWrite())) {
System.out.println(victim + ".class must be writeable. Fix it!");
System.exit(2);
}
try {
RandomAccessFile target = new RandomAccessFile(victim + ".class", "rw");
/* Adjust the proper attribute_length and code_length in order to maintain
the hacked class file's verifiability. */
// Increase the attacked method's attribute_lenth by 3.
fpointer = 455;
target.seek(fpointer);
int changed_byte = (int) target.readUnsignedByte() + 3;
target.seek(fpointer);
target.writeByte(changed_byte);
// Increase the attacked method's code_length by 3.
fpointer = 463;
target.seek(fpointer);
changed_byte = (int) target.readUnsignedByte() + 3;
target.seek(fpointer);
target.writeByte(changed_byte);
/* Insert the 3 bytes of code to make Beginner.class deviant */
// Get to where we want to insert code.
fpointer = 506;
target.seek(fpointer);
// Save the remainder of the target class file.
int diff = (int) target.length() - fpointer;
byte[] tail = new byte[diff];
target.read(tail, 0, diff);
// Insert the 3 bytes.
target.seek(fpointer);
target.writeByte(167);
target.writeByte(255);
target.writeByte(214);
// Restore the tail.
target.write(tail);
// All the changes are made, so close the file and get out of here
target.close();
} catch (IOException ioe) {
}
}
private boolean writeIndex() {
boolean ret = false;
if (readFromIndex || !usePreindexedCache) {
return true;
}
if (!writeIndex) {
return true;
}
File indexFile = getIndexFile();
if (indexFile == null) {
return false;
}
RandomAccessFile raf = null;
long writtenSoFar = 0;
try {
raf = new RandomAccessFile(indexFile, "rw");
raf.writeLong(zipFileLastModified);
writtenSoFar += 8;
List<DirectoryEntry> directoriesToWrite = new ArrayList<DirectoryEntry>();
Map<RelativeDirectory, Long> offsets = new HashMap<RelativeDirectory, Long>();
raf.writeInt(directories.keySet().size());
writtenSoFar += 4;
for (RelativeDirectory dirName : directories.keySet()) {
DirectoryEntry dirEntry = directories.get(dirName);
directoriesToWrite.add(dirEntry);
// Write the dir name bytes
byte[] dirNameBytes = dirName.getPath().getBytes("UTF-8");
int dirNameBytesLen = dirNameBytes.length;
raf.writeInt(dirNameBytesLen);
writtenSoFar += 4;
raf.write(dirNameBytes);
writtenSoFar += dirNameBytesLen;
// Write the number of files in the dir
List<Entry> dirEntries = dirEntry.getEntriesAsCollection();
raf.writeInt(dirEntries.size());
writtenSoFar += 4;
offsets.put(dirName, new Long(writtenSoFar));
// Write the offset of the file's data in the dir
dirEntry.writtenOffsetOffset = 0L;
raf.writeLong(0L);
writtenSoFar += 8;
}
for (DirectoryEntry de : directoriesToWrite) {
// Fix up the offset in the directory table
long currFP = raf.getFilePointer();
long offsetOffset = offsets.get(de.dirName).longValue();
raf.seek(offsetOffset);
raf.writeLong(writtenSoFar);
raf.seek(currFP);
// Now write each of the files in the DirectoryEntry
List<Entry> list = de.getEntriesAsCollection();
for (Entry zfie : list) {
// Write the name bytes
byte[] zfieNameBytes = zfie.name.getBytes("UTF-8");
int zfieNameBytesLen = zfieNameBytes.length;
raf.writeInt(zfieNameBytesLen);
writtenSoFar += 4;
raf.write(zfieNameBytes);
writtenSoFar += zfieNameBytesLen;
// Write isDir
raf.writeByte(zfie.isDir ? (byte) 1 : (byte) 0);
writtenSoFar += 1;
// Write offset of bytes in the real Jar/Zip file
raf.writeInt(zfie.offset);
writtenSoFar += 4;
// Write size of the file in the real Jar/Zip file
raf.writeInt(zfie.size);
writtenSoFar += 4;
// Write compressed size of the file in the real Jar/Zip file
raf.writeInt(zfie.compressedSize);
writtenSoFar += 4;
// Write java time stamp of the file in the real Jar/Zip file
raf.writeLong(zfie.getLastModified());
writtenSoFar += 8;
}
}
} catch (Throwable t) {
// Do nothing
} finally {
try {
if (raf != null) {
raf.close();
}
} catch (IOException ioe) {
// Do nothing
}
}
return ret;
}
/**
* ***** This writes the binary byte to the file. Later, use readBinaryByte to read the value from
* the file.
*/
public void writeBinaryByte(int col, int row, byte b) throws IOException {
raf.seek(row * nBytesPerRow + columnStartAt[col]);
raf.writeByte(b);
}
private void markDirty() throws IOException {
lockFileAccess.seek(STATE_REGION_POS);
lockFileAccess.writeByte(STATE_REGION_PROTOCOL);
lockFileAccess.writeBoolean(false);
assert lockFileAccess.getFilePointer() == STATE_REGION_SIZE + STATE_REGION_POS;
}
/* @see java.io.DataOutput.writeByte(int) */
public void writeByte(int v) throws IOException {
raf.writeByte(v);
}
private java.nio.channels.FileLock lock(FileLockManager.LockMode lockMode) throws Throwable {
LOGGER.debug(
"Waiting to acquire {} lock on {}.", lockMode.toString().toLowerCase(), displayName);
long timeout = System.currentTimeMillis() + lockTimeoutMs;
// Lock the state region, with the requested mode
java.nio.channels.FileLock stateRegionLock = lockStateRegion(lockMode, timeout);
if (stateRegionLock == null) {
// Can't acquire lock, get details of owner to include in the error message
String ownerPid = "unknown";
String ownerOperation = "unknown";
java.nio.channels.FileLock informationRegionLock =
lockInformationRegion(LockMode.Shared, timeout);
if (informationRegionLock == null) {
LOGGER.debug("Could not lock information region for {}. Ignoring.", displayName);
} else {
try {
if (lockFileAccess.length() <= INFORMATION_REGION_POS) {
LOGGER.debug(
"Lock file for {} is too short to contain information region. Ignoring.",
displayName);
} else {
lockFileAccess.seek(INFORMATION_REGION_POS);
if (lockFileAccess.readByte() != INFORMATION_REGION_PROTOCOL) {
throw new IllegalStateException(
String.format(
"Unexpected lock protocol found in lock file '%s' for %s.",
lockFile, displayName));
}
ownerPid = lockFileAccess.readUTF();
ownerOperation = lockFileAccess.readUTF();
}
} finally {
informationRegionLock.release();
}
}
throw new LockTimeoutException(
String.format(
"Timeout waiting to lock %s. It is currently in use by another Gradle instance.%nOwner PID: %s%nOur PID: %s%nOwner Operation: %s%nOur operation: %s%nLock file: %s",
displayName,
ownerPid,
metaDataProvider.getProcessIdentifier(),
ownerOperation,
operationDisplayName,
lockFile));
}
try {
if (lockFileAccess.length() > 0) {
lockFileAccess.seek(STATE_REGION_POS);
if (lockFileAccess.readByte() != STATE_REGION_PROTOCOL) {
throw new IllegalStateException(
String.format(
"Unexpected lock protocol found in lock file '%s' for %s.",
lockFile, displayName));
}
}
if (!stateRegionLock.isShared()) {
// We have an exclusive lock (whether we asked for it or not).
// Update the state region
if (lockFileAccess.length() < STATE_REGION_SIZE) {
// File did not exist before locking
lockFileAccess.seek(STATE_REGION_POS);
lockFileAccess.writeByte(STATE_REGION_PROTOCOL);
lockFileAccess.writeBoolean(false);
}
// Acquire an exclusive lock on the information region and write our details there
java.nio.channels.FileLock informationRegionLock =
lockInformationRegion(LockMode.Exclusive, timeout);
if (informationRegionLock == null) {
throw new IllegalStateException(
String.format(
"Timeout waiting to lock the information region for lock %s", displayName));
}
// check that the length of the reserved region is enough for storing our content
try {
lockFileAccess.seek(INFORMATION_REGION_POS);
lockFileAccess.writeByte(INFORMATION_REGION_PROTOCOL);
lockFileAccess.writeUTF(trimIfNecessary(metaDataProvider.getProcessIdentifier()));
lockFileAccess.writeUTF(trimIfNecessary(operationDisplayName));
lockFileAccess.setLength(lockFileAccess.getFilePointer());
} finally {
informationRegionLock.release();
}
}
} catch (Throwable t) {
stateRegionLock.release();
throw t;
}
LOGGER.debug("Lock acquired.");
return stateRegionLock;
}
public static void main(String args[]) throws Exception {
int index;
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
DatagramSocket clientSocket = new DatagramSocket();
byte[] sendData = new byte[1024];
byte[] receiveData = new byte[1024];
// Pull the target host from the command line.
InetAddress ipAddress = null;
if (args.length > 0) {
ipAddress = InetAddress.getByName(args[0]);
} else {
System.err.println("FATAL: You must specify a hast to connect to.");
System.exit(1);
}
// Get the request string from input and send it off.
String request = inFromUser.readLine();
sendData = request.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, ipAddress, PORT);
clientSocket.send(sendPacket);
// Get the header packet.
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
receiveData = receivePacket.getData();
String[] words = new String[8];
words = (new String(receiveData)).split("\\s+");
int numBytes = Integer.parseInt(words[1]);
boolean[] packets = new boolean[numBytes];
File download_file = new File("downloaded_file");
download_file.createNewFile();
RandomAccessFile download = new RandomAccessFile(download_file, "rw");
download.setLength(numBytes);
clientSocket.setSoTimeout(1000);
// Get the server's response.
do {
try {
while (true) {
receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
receiveData = receivePacket.getData();
// Convert the first two bytes back into the integer index of this packet.
index = 256 * (receiveData[0] & 0xff) + (receiveData[1] & 0xff);
packets[index] = true;
download.seek(index * 1022);
for (int i = 0; i < 1021; ++i) {
download.writeByte(receiveData[i + 2]);
}
}
} catch (Exception e) {
}
} while (moreToDo(packets));
}
/**
* Write tag to file
*
* @param tag
* @param raf
* @param rafTemp
* @throws CannotWriteException
* @throws IOException
*/
public void write(Tag tag, RandomAccessFile raf, RandomAccessFile rafTemp)
throws CannotWriteException, IOException {
logger.config("Writing tag");
MetadataBlockInfo blockInfo = new MetadataBlockInfo();
// Read existing data
FlacStreamReader flacStream = new FlacStreamReader(raf);
try {
flacStream.findStream();
} catch (CannotReadException cre) {
throw new CannotWriteException(cre.getMessage());
}
boolean isLastBlock = false;
while (!isLastBlock) {
MetadataBlockHeader mbh = MetadataBlockHeader.readHeader(raf);
switch (mbh.getBlockType()) {
case STREAMINFO:
{
blockInfo.streamInfoBlock =
new MetadataBlock(mbh, new MetadataBlockDataStreamInfo(mbh, raf));
break;
}
case VORBIS_COMMENT:
case PADDING:
case PICTURE:
{
// All these will be replaced by the new metadata so we just treat as padding in order
// to determine how much space is already allocated in the file
raf.seek(raf.getFilePointer() + mbh.getDataLength());
MetadataBlockData mbd = new MetadataBlockDataPadding(mbh.getDataLength());
blockInfo.metadataBlockPadding.add(new MetadataBlock(mbh, mbd));
break;
}
case APPLICATION:
{
MetadataBlockData mbd = new MetadataBlockDataApplication(mbh, raf);
blockInfo.metadataBlockApplication.add(new MetadataBlock(mbh, mbd));
break;
}
case SEEKTABLE:
{
MetadataBlockData mbd = new MetadataBlockDataSeekTable(mbh, raf);
blockInfo.metadataBlockSeekTable.add(new MetadataBlock(mbh, mbd));
break;
}
case CUESHEET:
{
MetadataBlockData mbd = new MetadataBlockDataCueSheet(mbh, raf);
blockInfo.metadataBlockCueSheet.add(new MetadataBlock(mbh, mbd));
break;
}
default:
{
// What are the consequences of doing this
raf.seek(raf.getFilePointer() + mbh.getDataLength());
break;
}
}
isLastBlock = mbh.isLastBlock();
}
// Number of bytes in the existing file available before audio data
int availableRoom = computeAvailableRoom(blockInfo);
// Minimum Size of the New tag data without padding
int newTagSize = tc.convert(tag).limit();
// Number of bytes required for new tagdata and other metadata blocks
int neededRoom = newTagSize + computeNeededRoom(blockInfo);
// Go to start of Flac within file
raf.seek(flacStream.getStartOfFlacInFile());
logger.config("Writing tag available bytes:" + availableRoom + ":needed bytes:" + neededRoom);
// There is enough room to fit the tag without moving the audio just need to
// adjust padding accordingly need to allow space for padding header if padding required
if ((availableRoom == neededRoom)
|| (availableRoom > neededRoom + MetadataBlockHeader.HEADER_LENGTH)) {
// Jump over Id3 (if exists) Flac and StreamInfoBlock
raf.seek(flacStream.getStartOfFlacInFile() + FlacStreamReader.FLAC_STREAM_IDENTIFIER_LENGTH);
// Write StreamInfo, we always write this first even if wasn't first in original spec
raf.write(blockInfo.streamInfoBlock.getHeader().getBytesWithoutIsLastBlockFlag());
raf.write(blockInfo.streamInfoBlock.getData().getBytes());
// Write Application Blocks
for (MetadataBlock aMetadataBlockApplication : blockInfo.metadataBlockApplication) {
raf.write(aMetadataBlockApplication.getHeader().getBytesWithoutIsLastBlockFlag());
raf.write(aMetadataBlockApplication.getData().getBytes());
}
// Write Seek Table Blocks
for (MetadataBlock aMetadataBlockSeekTable : blockInfo.metadataBlockSeekTable) {
raf.write(aMetadataBlockSeekTable.getHeader().getBytesWithoutIsLastBlockFlag());
raf.write(aMetadataBlockSeekTable.getData().getBytes());
}
// Write Cue sheet Blocks
for (MetadataBlock aMetadataBlockCueSheet : blockInfo.metadataBlockCueSheet) {
raf.write(aMetadataBlockCueSheet.getHeader().getBytesWithoutIsLastBlockFlag());
raf.write(aMetadataBlockCueSheet.getData().getBytes());
}
// Write tag (and padding)
raf.getChannel().write(tc.convert(tag, availableRoom - neededRoom));
}
// Need to move audio
else {
// Skip to start of Audio
// If Flac tag contains ID3header or something before start of official Flac header copy it
// over
if (flacStream.getStartOfFlacInFile() > 0) {
raf.seek(0);
rafTemp.getChannel().transferFrom(raf.getChannel(), 0, flacStream.getStartOfFlacInFile());
rafTemp.seek(flacStream.getStartOfFlacInFile());
}
rafTemp.writeBytes(FlacStreamReader.FLAC_STREAM_IDENTIFIER);
rafTemp.writeByte(0); // To ensure never set Last-metadata-block flag even if was before
int uptoStreamHeaderSize =
flacStream.getStartOfFlacInFile()
+ FlacStreamReader.FLAC_STREAM_IDENTIFIER_LENGTH
+ MetadataBlockHeader.BLOCK_TYPE_LENGTH;
rafTemp.seek(uptoStreamHeaderSize);
raf.seek(uptoStreamHeaderSize);
rafTemp
.getChannel()
.transferFrom(
raf.getChannel(),
uptoStreamHeaderSize,
MetadataBlockHeader.BLOCK_LENGTH
+ MetadataBlockDataStreamInfo.STREAM_INFO_DATA_LENGTH);
int dataStartSize =
flacStream.getStartOfFlacInFile()
+ FlacStreamReader.FLAC_STREAM_IDENTIFIER_LENGTH
+ MetadataBlockHeader.HEADER_LENGTH
+ MetadataBlockDataStreamInfo.STREAM_INFO_DATA_LENGTH;
rafTemp.seek(dataStartSize);
// Write all the metadatablocks
for (MetadataBlock aMetadataBlockApplication : blockInfo.metadataBlockApplication) {
rafTemp.write(aMetadataBlockApplication.getHeader().getBytesWithoutIsLastBlockFlag());
rafTemp.write(aMetadataBlockApplication.getData().getBytes());
}
for (MetadataBlock aMetadataBlockSeekTable : blockInfo.metadataBlockSeekTable) {
rafTemp.write(aMetadataBlockSeekTable.getHeader().getBytesWithoutIsLastBlockFlag());
rafTemp.write(aMetadataBlockSeekTable.getData().getBytes());
}
for (MetadataBlock aMetadataBlockCueSheet : blockInfo.metadataBlockCueSheet) {
rafTemp.write(aMetadataBlockCueSheet.getHeader().getBytesWithoutIsLastBlockFlag());
rafTemp.write(aMetadataBlockCueSheet.getData().getBytes());
}
// Write tag data use default padding
rafTemp.write(tc.convert(tag, FlacTagCreator.DEFAULT_PADDING).array());
// Write audio to new file
raf.seek(dataStartSize + availableRoom);
// Issue #385
// Transfer 'size' bytes from raf at its current position to rafTemp at position but do it in
// batches
// to prevent OutOfMemory exceptions
long amountToBeWritten = raf.getChannel().size() - raf.getChannel().position();
long written = 0;
long chunksize = TagOptionSingleton.getInstance().getWriteChunkSize();
long count = amountToBeWritten / chunksize;
long mod = amountToBeWritten % chunksize;
for (int i = 0; i < count; i++) {
written +=
rafTemp
.getChannel()
.transferFrom(raf.getChannel(), rafTemp.getChannel().position(), chunksize);
rafTemp.getChannel().position(rafTemp.getChannel().position() + chunksize);
}
written +=
rafTemp.getChannel().transferFrom(raf.getChannel(), rafTemp.getChannel().position(), mod);
if (written != amountToBeWritten) {
throw new CannotWriteException(
"Was meant to write "
+ amountToBeWritten
+ " bytes but only written "
+ written
+ " bytes");
}
}
}