Package org.aoju.bus.core.io.sink

Interface BufferSink

All Superinterfaces:

AutoCloseable, Channel, Closeable, Flushable, Sink, WritableByteChannel

All Known Implementing Classes:

Buffer, RealSink

public interface BufferSink
extends Sink, WritableByteChannel

一种接收器,它在内部保存缓冲区, 以便调用者可以进行小的写操作没有性能损失

Since:

Java 17+

Author:

Kimi Liu

Method Summary

Modifier and Type	Method	Description
Buffer	buffer()	Returns this sink's internal buffer.
BufferSink	emit()	Writes all buffered data to the underlying sink, if one exists.
BufferSink	emitCompleteSegments()	Writes complete segments to the underlying sink, if one exists.
void	flush()	Writes all buffered data to the underlying sink, if one exists.
OutputStream	outputStream()	Returns an output stream that writes to this sink.
BufferSink	write(byte[] source)	Like OutputStream.write(byte[]), this writes a complete byte array to this sink.
BufferSink	write(byte[] source, int offset, int byteCount)	Like OutputStream.write(byte[], int, int), this writes byteCount bytes of source, starting at offset.
BufferSink	write(ByteString byteString)
BufferSink	write(Source source, long byteCount)	Removes byteCount bytes from source and appends them to this sink.
long	writeAll(Source source)	Removes all bytes from source and appends them to this sink.
BufferSink	writeByte(int b)	Writes a byte to this sink.
BufferSink	writeDecimalLong(long v)	Writes a long to this sink in signed decimal form (i.e., as a string in base 10).
BufferSink	writeHexadecimalUnsignedLong(long v)	Writes a long to this sink in hexadecimal form (i.e., as a string in base 16).
BufferSink	writeInt(int i)	Writes a big-endian int to this sink using four bytes.
BufferSink	writeIntLe(int i)	Writes a little-endian int to this sink using four bytes.
BufferSink	writeLong(long v)	Writes a big-endian long to this sink using eight bytes.
BufferSink	writeLongLe(long v)	Writes a little-endian long to this sink using eight bytes.
BufferSink	writeShort(int s)	Writes a big-endian short to this sink using two bytes.
BufferSink	writeShortLe(int s)	Writes a little-endian short to this sink using two bytes.
BufferSink	writeString(String string, int beginIndex, int endIndex, Charset charset)	Encodes the characters at beginIndex up to endIndex from string in charset and writes it to this sink.
BufferSink	writeString(String string, Charset charset)	Encodes string in charset and writes it to this sink.
BufferSink	writeUtf8(String string)	Encodes string in UTF-8 and writes it to this sink.
BufferSink	writeUtf8(String string, int beginIndex, int endIndex)	Encodes the characters at beginIndex up to endIndex from string in UTF-8 and writes it to this sink.
BufferSink	writeUtf8CodePoint(int codePoint)	Encodes codePoint in UTF-8 and writes it to this sink.

Methods inherited from interface java.nio.channels.Channel

close, isOpen

Methods inherited from interface org.aoju.bus.core.io.sink.Sink

close, timeout, write

Methods inherited from interface java.nio.channels.WritableByteChannel

write

Method Details

buffer

Buffer buffer()

Returns this sink's internal buffer.

write

BufferSink write(ByteString byteString)
          throws IOException

Throws:

IOException

write

BufferSink write(byte[] source)
          throws IOException

Like OutputStream.write(byte[]), this writes a complete byte array to this sink.

Throws:

IOException

write

BufferSink write(byte[] source,
 int offset,
 int byteCount)
          throws IOException

Like OutputStream.write(byte[], int, int), this writes byteCount bytes of source, starting at offset.

Throws:

IOException

writeAll

long writeAll(Source source)
       throws IOException

Removes all bytes from source and appends them to this sink. Returns the number of bytes read which will be 0 if source is exhausted.

Throws:

IOException

write

BufferSink write(Source source,
 long byteCount)
          throws IOException

Removes byteCount bytes from source and appends them to this sink.

Throws:

IOException

writeUtf8

BufferSink writeUtf8(String string)
              throws IOException

Encodes string in UTF-8 and writes it to this sink.

 Buffer buffer = new Buffer();
 buffer.writeUtf8("Uh uh uh!");
 buffer.writeByte(' ');
 buffer.writeUtf8("You didn't say the magic word!");

 assertEquals("Uh uh uh! You didn't say the magic word!", buffer.readUtf8());
 

Throws:

IOException

writeUtf8

BufferSink writeUtf8(String string,
 int beginIndex,
 int endIndex)
              throws IOException

Encodes the characters at beginIndex up to endIndex from string in UTF-8 and writes it to this sink.

 Buffer buffer = new Buffer();
 buffer.writeUtf8("I'm a hacker!\n", 6, 12);
 buffer.writeByte(' ');
 buffer.writeUtf8("That's what I said: you're a nerd.\n", 29, 33);
 buffer.writeByte(' ');
 buffer.writeUtf8("I prefer to be called a hacker!\n", 24, 31);

 assertEquals("hacker nerd hacker!", buffer.readUtf8());
 

Throws:

IOException

writeUtf8CodePoint

BufferSink writeUtf8CodePoint(int codePoint)
                       throws IOException

Encodes codePoint in UTF-8 and writes it to this sink.

Throws:

IOException

writeString

BufferSink writeString(String string,
 Charset charset)
                throws IOException

Encodes string in charset and writes it to this sink.

Throws:

IOException

writeString

BufferSink writeString(String string,
 int beginIndex,
 int endIndex,
 Charset charset)
                throws IOException

Encodes the characters at beginIndex up to endIndex from string in charset and writes it to this sink.

Throws:

IOException

writeByte

BufferSink writeByte(int b)
              throws IOException

Writes a byte to this sink.

Throws:

IOException

writeShort

BufferSink writeShort(int s)
               throws IOException

Writes a big-endian short to this sink using two bytes.

 Buffer buffer = new Buffer();
 buffer.writeShort(32767);
 buffer.writeShort(15);

 assertEquals(4, buffer.size());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeShortLe

BufferSink writeShortLe(int s)
                 throws IOException

Writes a little-endian short to this sink using two bytes.

 Buffer buffer = new Buffer();
 buffer.writeShortLe(32767);
 buffer.writeShortLe(15);

 assertEquals(4, buffer.size());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeInt

BufferSink writeInt(int i)
             throws IOException

Writes a big-endian int to this sink using four bytes.

 Buffer buffer = new Buffer();
 buffer.writeInt(2147483647);
 buffer.writeInt(15);

 assertEquals(8, buffer.size());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeIntLe

BufferSink writeIntLe(int i)
               throws IOException

Writes a little-endian int to this sink using four bytes.

 Buffer buffer = new Buffer();
 buffer.writeIntLe(2147483647);
 buffer.writeIntLe(15);

 assertEquals(8, buffer.size());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeLong

BufferSink writeLong(long v)
              throws IOException

Writes a big-endian long to this sink using eight bytes.

 Buffer buffer = new Buffer();
 buffer.writeLong(9223372036854775807L);
 buffer.writeLong(15);

 assertEquals(16, buffer.size());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeLongLe

BufferSink writeLongLe(long v)
                throws IOException

Writes a little-endian long to this sink using eight bytes.

 Buffer buffer = new Buffer();
 buffer.writeLongLe(9223372036854775807L);
 buffer.writeLongLe(15);

 assertEquals(16, buffer.size());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0xff, buffer.readByte());
 assertEquals((byte) 0x7f, buffer.readByte());
 assertEquals((byte) 0x0f, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals((byte) 0x00, buffer.readByte());
 assertEquals(0, buffer.size());
 

Throws:

IOException

writeDecimalLong

BufferSink writeDecimalLong(long v)
                     throws IOException

Writes a long to this sink in signed decimal form (i.e., as a string in base 10).

 Buffer buffer = new Buffer();
 buffer.writeDecimalLong(8675309L);
 buffer.writeByte(' ');
 buffer.writeDecimalLong(-123L);
 buffer.writeByte(' ');
 buffer.writeDecimalLong(1L);

 assertEquals("8675309 -123 1", buffer.readUtf8());
 

Throws:

IOException

writeHexadecimalUnsignedLong

BufferSink writeHexadecimalUnsignedLong(long v)
                                 throws IOException

Writes a long to this sink in hexadecimal form (i.e., as a string in base 16).

 Buffer buffer = new Buffer();
 buffer.writeHexadecimalUnsignedLong(65535L);
 buffer.writeByte(' ');
 buffer.writeHexadecimalUnsignedLong(0xcafebabeL);
 buffer.writeByte(' ');
 buffer.writeHexadecimalUnsignedLong(0x10L);

 assertEquals("ffff cafebabe 10", buffer.readUtf8());
 

Throws:

IOException

flush

void flush()
    throws IOException

Writes all buffered data to the underlying sink, if one exists. Then that sink is recursively flushed which pushes data as far as possible towards its ultimate destination. Typically that destination is a network socket or file.

 BufferedSink b0 = new Buffer();
 BufferedSink b1 = Okio.buffer(b0);
 BufferedSink b2 = Okio.buffer(b1);

 b2.writeUtf8("hello");
 assertEquals(5, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(0, b0.buffer().size());

 b2.flush();
 assertEquals(0, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(5, b0.buffer().size());
 

Specified by:

flush in interface Flushable

Specified by:

flush in interface Sink

Throws:

IOException

emit

BufferSink emit()
         throws IOException

Writes all buffered data to the underlying sink, if one exists. Like flush(), but weaker. Call this before this buffered sink goes out of scope so that its data can reach its destination.

 BufferedSink b0 = new Buffer();
 BufferedSink b1 = Okio.buffer(b0);
 BufferedSink b2 = Okio.buffer(b1);

 b2.writeUtf8("hello");
 assertEquals(5, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(0, b0.buffer().size());

 b2.emit();
 assertEquals(0, b2.buffer().size());
 assertEquals(5, b1.buffer().size());
 assertEquals(0, b0.buffer().size());

 b1.emit();
 assertEquals(0, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(5, b0.buffer().size());
 

Throws:

IOException

emitCompleteSegments

BufferSink emitCompleteSegments()
                         throws IOException

Writes complete segments to the underlying sink, if one exists. Like flush(), but weaker. Use this to limit the memory held in the buffer to a single segment. Typically application code will not need to call this: it is only necessary when application code writes directly to this sink's buffer.

 BufferedSink b0 = new Buffer();
 BufferedSink b1 = Okio.buffer(b0);
 BufferedSink b2 = Okio.buffer(b1);

 b2.buffer().write(new byte[20_000]);
 assertEquals(20_000, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(0, b0.buffer().size());

 b2.emitCompleteSegments();
 assertEquals(3_616, b2.buffer().size());
 assertEquals(0, b1.buffer().size());
 assertEquals(16_384, b0.buffer().size()); // This example assumes 8192 byte segments.
 

Throws:

IOException

outputStream

OutputStream outputStream()

Returns an output stream that writes to this sink.