程序包 com.lark.oapi.okio

类 Buffer

java.lang.Object

com.lark.oapi.okio.Buffer

所有已实现的接口:

BufferedSink, BufferedSource, Sink, Source, Closeable, Flushable, AutoCloseable, Cloneable, ByteChannel, Channel, ReadableByteChannel, WritableByteChannel

public final class Buffer
extends Object
implements BufferedSource, BufferedSink, Cloneable, ByteChannel

A collection of bytes in memory.

Moving data from one buffer to another is fast. Instead of copying bytes from one place in memory to another, this class just changes ownership of the underlying byte arrays.

This buffer grows with your data. Just like ArrayList, each buffer starts small. It consumes only the memory it needs to.

This buffer pools its byte arrays. When you allocate a byte array in Java, the runtime must zero-fill the requested array before returning it to you. Even if you're going to write over that space anyway. This class avoids zero-fill and GC churn by pooling byte arrays.

嵌套类概要

嵌套类

修饰符和类型	类	说明
static final class	Buffer.UnsafeCursor	A handle to the underlying data in a buffer.

构造器概要

构造器

构造器	说明
Buffer()

方法概要

修饰符和类型	方法	说明
Buffer	buffer()	Returns this source's internal buffer.
final void	clear()	Discards all bytes in this buffer.
Buffer	clone()	Returns a deep copy of this buffer.
void	close()	Closes this source and releases the resources held by this source.
final long	completeSegmentByteCount()	Returns the number of bytes in segments that are not writable.
final Buffer	copyTo(Buffer out, long offset, long byteCount)	Copy byteCount bytes from this, starting at offset, to out.
final Buffer	copyTo(OutputStream out)	Copy the contents of this to out.
final Buffer	copyTo(OutputStream out, long offset, long byteCount)	Copy byteCount bytes from this, starting at offset, to out.
BufferedSink	emit()	Writes all buffered data to the underlying sink, if one exists.
Buffer	emitCompleteSegments()	Writes complete segments to the underlying sink, if one exists.
boolean	equals(Object o)
boolean	exhausted()	Returns true if there are no more bytes in this source.
void	flush()	Writes all buffered data to the underlying sink, if one exists.
Buffer	getBuffer()	This source's internal buffer.
final byte	getByte(long pos)	Returns the byte at pos.
int	hashCode()
final ByteString	hmacSha1(ByteString key)	Returns the 160-bit SHA-1 HMAC of this buffer.
final ByteString	hmacSha256(ByteString key)	Returns the 256-bit SHA-256 HMAC of this buffer.
final ByteString	hmacSha512(ByteString key)	Returns the 512-bit SHA-512 HMAC of this buffer.
long	indexOf(byte b)	Equivalent to indexOf(b, 0).
long	indexOf(byte b, long fromIndex)	Returns the index of b in this at or beyond fromIndex, or -1 if this buffer does not contain b in that range.
long	indexOf(byte b, long fromIndex, long toIndex)	Returns the index of b if it is found in the range of fromIndex inclusive to toIndex exclusive.
long	indexOf(ByteString bytes)	Equivalent to indexOf(bytes, 0).
long	indexOf(ByteString bytes, long fromIndex)	Returns the index of the first match for bytes in the buffer at or after fromIndex.
long	indexOfElement(ByteString targetBytes)	Equivalent to indexOfElement(targetBytes, 0).
long	indexOfElement(ByteString targetBytes, long fromIndex)	Returns the first index in this buffer that is at or after fromIndex and that contains any of the bytes in targetBytes.
InputStream	inputStream()	Returns an input stream that reads from this source.
boolean	isOpen()
final ByteString	md5()	Returns the 128-bit MD5 hash of this buffer.
OutputStream	outputStream()	Returns an output stream that writes to this sink.
BufferedSource	peek()	Returns a new BufferedSource that can read data from this BufferedSource without consuming it.
boolean	rangeEquals(long offset, ByteString bytes)	Returns true if the bytes at offset in this source equal bytes.
boolean	rangeEquals(long offset, ByteString bytes, int bytesOffset, int byteCount)	Returns true if byteCount bytes at offset in this source equal bytes at bytesOffset.
int	read(byte[] sink)	Removes up to sink.length bytes from this and copies them into sink.
int	read(byte[] sink, int offset, int byteCount)	Removes up to byteCount bytes from this and copies them into sink at offset.
long	read(Buffer sink, long byteCount)	Removes at least 1, and up to byteCount bytes from this and appends them to sink.
int	read(ByteBuffer sink)
long	readAll(Sink sink)	Removes all bytes from this and appends them to sink.
final Buffer.UnsafeCursor	readAndWriteUnsafe()
final Buffer.UnsafeCursor	readAndWriteUnsafe(Buffer.UnsafeCursor unsafeCursor)
byte	readByte()	Removes a byte from this source and returns it.
byte[]	readByteArray()	Removes all bytes from this and returns them as a byte array.
byte[]	readByteArray(long byteCount)	Removes byteCount bytes from this and returns them as a byte array.
ByteString	readByteString()	Removes all bytes bytes from this and returns them as a byte string.
ByteString	readByteString(long byteCount)	Removes byteCount bytes from this and returns them as a byte string.
long	readDecimalLong()	Reads a long from this source in signed decimal form (i.e., as a string in base 10 with optional leading '-').
final Buffer	readFrom(InputStream in)	Read and exhaust bytes from in to this.
final Buffer	readFrom(InputStream in, long byteCount)	Read byteCount bytes from in to this.
void	readFully(byte[] sink)	Removes exactly sink.length bytes from this and copies them into sink.
void	readFully(Buffer sink, long byteCount)	Removes exactly byteCount bytes from this and appends them to sink.
long	readHexadecimalUnsignedLong()	Reads a long form this source in hexadecimal form (i.e., as a string in base 16).
int	readInt()	Removes four bytes from this source and returns a big-endian int.
int	readIntLe()	Removes four bytes from this source and returns a little-endian int.
long	readLong()	Removes eight bytes from this source and returns a big-endian long.
long	readLongLe()	Removes eight bytes from this source and returns a little-endian long.
short	readShort()	Removes two bytes from this source and returns a big-endian short.
short	readShortLe()	Removes two bytes from this source and returns a little-endian short.
String	readString(long byteCount, Charset charset)	Removes byteCount bytes from this, decodes them as charset, and returns the string.
String	readString(Charset charset)	Removes all bytes from this, decodes them as charset, and returns the string.
final Buffer.UnsafeCursor	readUnsafe()
final Buffer.UnsafeCursor	readUnsafe(Buffer.UnsafeCursor unsafeCursor)
String	readUtf8()	Removes all bytes from this, decodes them as UTF-8, and returns the string.
String	readUtf8(long byteCount)	Removes byteCount bytes from this, decodes them as UTF-8, and returns the string.
int	readUtf8CodePoint()	Removes and returns a single UTF-8 code point, reading between 1 and 4 bytes as necessary.
String	readUtf8Line()	Removes and returns characters up to but not including the next line break.
String	readUtf8LineStrict()	Removes and returns characters up to but not including the next line break.
String	readUtf8LineStrict(long limit)	Like BufferedSource.readUtf8LineStrict(), except this allows the caller to specify the longest allowed match.
boolean	request(long byteCount)	Returns true when the buffer contains at least byteCount bytes, expanding it as necessary.
void	require(long byteCount)	Returns when the buffer contains at least byteCount bytes.
int	select(Options options)	Finds the first string in options that is a prefix of this buffer, consumes it from this buffer, and returns its index.
final ByteString	sha1()	Returns the 160-bit SHA-1 hash of this buffer.
final ByteString	sha256()	Returns the 256-bit SHA-256 hash of this buffer.
final ByteString	sha512()	Returns the 512-bit SHA-512 hash of this buffer.
final long	size()	Returns the number of bytes currently in this buffer.
void	skip(long byteCount)	Discards byteCount bytes from the head of this buffer.
final ByteString	snapshot()	Returns an immutable copy of this buffer as a byte string.
final ByteString	snapshot(int byteCount)	Returns an immutable copy of the first byteCount bytes of this buffer as a byte string.
Timeout	timeout()	Returns the timeout for this source.
String	toString()	Returns a human-readable string that describes the contents of this buffer.
Buffer	write(byte[] source)	Like OutputStream.write(byte[]), this writes a complete byte array to this sink.
Buffer	write(byte[] source, int offset, int byteCount)	Like OutputStream.write(byte[], int, int), this writes byteCount bytes of source, starting at offset.
void	write(Buffer source, long byteCount)	Removes byteCount bytes from source and appends them to this.
Buffer	write(ByteString byteString)
BufferedSink	write(Source source, long byteCount)	Removes byteCount bytes from source and appends them to this sink.
int	write(ByteBuffer source)
long	writeAll(Source source)	Removes all bytes from source and appends them to this sink.
Buffer	writeByte(int b)	Writes a byte to this sink.
Buffer	writeDecimalLong(long v)	Writes a long to this sink in signed decimal form (i.e., as a string in base 10).
Buffer	writeHexadecimalUnsignedLong(long v)	Writes a long to this sink in hexadecimal form (i.e., as a string in base 16).
Buffer	writeInt(int i)	Writes a big-endian int to this sink using four bytes.
Buffer	writeIntLe(int i)	Writes a little-endian int to this sink using four bytes.
Buffer	writeLong(long v)	Writes a big-endian long to this sink using eight bytes.
Buffer	writeLongLe(long v)	Writes a little-endian long to this sink using eight bytes.
Buffer	writeShort(int s)	Writes a big-endian short to this sink using two bytes.
Buffer	writeShortLe(int s)	Writes a little-endian short to this sink using two bytes.
Buffer	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.
Buffer	writeString(String string, Charset charset)	Encodes string in charset and writes it to this sink.
final Buffer	writeTo(OutputStream out)	Write the contents of this to out.
final Buffer	writeTo(OutputStream out, long byteCount)	Write byteCount bytes from this to out.
Buffer	writeUtf8(String string)	Encodes string in UTF-8 and writes it to this sink.
Buffer	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.
Buffer	writeUtf8CodePoint(int codePoint)	Encodes codePoint in UTF-8 and writes it to this sink.

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

Buffer

public Buffer()

方法详细资料

size

public final long size()

Returns the number of bytes currently in this buffer.

buffer

public Buffer buffer()

从接口复制的说明: BufferedSource

Returns this source's internal buffer.

指定者:

buffer 在接口中 BufferedSink

指定者:

buffer 在接口中 BufferedSource

getBuffer

public Buffer getBuffer()

从接口复制的说明: BufferedSource

This source's internal buffer.

指定者:

getBuffer 在接口中 BufferedSource

outputStream

public OutputStream outputStream()

从接口复制的说明: BufferedSink

Returns an output stream that writes to this sink.

指定者:

outputStream 在接口中 BufferedSink

emitCompleteSegments

public Buffer emitCompleteSegments()

从接口复制的说明: BufferedSink

Writes complete segments to the underlying sink, if one exists. Like BufferedSink.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.
 

指定者:

emitCompleteSegments 在接口中 BufferedSink

emit

public BufferedSink emit()

从接口复制的说明: BufferedSink

Writes all buffered data to the underlying sink, if one exists. Like BufferedSink.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());
 

指定者:

emit 在接口中 BufferedSink

exhausted

public boolean exhausted()

从接口复制的说明: BufferedSource

Returns true if there are no more bytes in this source. This will block until there are bytes to read or the source is definitely exhausted.

指定者:

exhausted 在接口中 BufferedSource

require

public void require(long byteCount)
             throws EOFException

从接口复制的说明: BufferedSource

Returns when the buffer contains at least byteCount bytes. Throws an EOFException if the source is exhausted before the required bytes can be read.

指定者:

require 在接口中 BufferedSource

抛出:

EOFException

request

public boolean request(long byteCount)

从接口复制的说明: BufferedSource

Returns true when the buffer contains at least byteCount bytes, expanding it as necessary. Returns false if the source is exhausted before the requested bytes can be read.

指定者:

request 在接口中 BufferedSource

peek

public BufferedSource peek()

从接口复制的说明: BufferedSource

Returns a new BufferedSource that can read data from this BufferedSource without consuming it. The returned source becomes invalid once this source is next read or closed.

For example, we can use peek() to lookahead and read the same data multiple times.

 

   Buffer buffer = new Buffer();
   buffer.writeUtf8("abcdefghi");

   buffer.readUtf8(3) // returns "abc", buffer contains "defghi"

   BufferedSource peek = buffer.peek();
   peek.readUtf8(3); // returns "def", buffer contains "defghi"
   peek.readUtf8(3); // returns "ghi", buffer contains "defghi"

   buffer.readUtf8(3); // returns "def", buffer contains "ghi"
 

指定者:

peek 在接口中 BufferedSource

inputStream

public InputStream inputStream()

从接口复制的说明: BufferedSource

Returns an input stream that reads from this source.

指定者:

inputStream 在接口中 BufferedSource

copyTo

public final Buffer copyTo(OutputStream out)
                    throws IOException

Copy the contents of this to out.

抛出:

IOException

copyTo

public final Buffer copyTo(OutputStream out,
 long offset,
 long byteCount)
                    throws IOException

Copy byteCount bytes from this, starting at offset, to out.

抛出:

IOException

copyTo

public final Buffer copyTo(Buffer out,
 long offset,
 long byteCount)

Copy byteCount bytes from this, starting at offset, to out.

writeTo

public final Buffer writeTo(OutputStream out)
                     throws IOException

Write the contents of this to out.

抛出:

IOException

writeTo

public final Buffer writeTo(OutputStream out,
 long byteCount)
                     throws IOException

Write byteCount bytes from this to out.

抛出:

IOException

readFrom

public final Buffer readFrom(InputStream in)
                      throws IOException

Read and exhaust bytes from in to this.

抛出:

IOException

readFrom

public final Buffer readFrom(InputStream in,
 long byteCount)
                      throws IOException

Read byteCount bytes from in to this.

抛出:

IOException

completeSegmentByteCount

public final long completeSegmentByteCount()

Returns the number of bytes in segments that are not writable. This is the number of bytes that can be flushed immediately to an underlying sink without harming throughput.

readByte

public byte readByte()

从接口复制的说明: BufferedSource

Removes a byte from this source and returns it.

指定者:

readByte 在接口中 BufferedSource

getByte

public final byte getByte(long pos)

Returns the byte at pos.

readShort

public short readShort()

从接口复制的说明: BufferedSource

Removes two bytes from this source and returns a big-endian short.

   Buffer buffer = new Buffer()
       .writeByte(0x7f)
       .writeByte(0xff)
       .writeByte(0x00)
       .writeByte(0x0f);
   assertEquals(4, buffer.size());

   assertEquals(32767, buffer.readShort());
   assertEquals(2, buffer.size());

   assertEquals(15, buffer.readShort());
   assertEquals(0, buffer.size());
 

指定者:

readShort 在接口中 BufferedSource

readInt

public int readInt()

从接口复制的说明: BufferedSource

Removes four bytes from this source and returns a big-endian int.

   Buffer buffer = new Buffer()
       .writeByte(0x7f)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x0f);
   assertEquals(8, buffer.size());

   assertEquals(2147483647, buffer.readInt());
   assertEquals(4, buffer.size());

   assertEquals(15, buffer.readInt());
   assertEquals(0, buffer.size());
 

指定者:

readInt 在接口中 BufferedSource

readLong

public long readLong()

从接口复制的说明: BufferedSource

Removes eight bytes from this source and returns a big-endian long.

   Buffer buffer = new Buffer()
       .writeByte(0x7f)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x0f);
   assertEquals(16, buffer.size());

   assertEquals(9223372036854775807L, buffer.readLong());
   assertEquals(8, buffer.size());

   assertEquals(15, buffer.readLong());
   assertEquals(0, buffer.size());
 

指定者:

readLong 在接口中 BufferedSource

readShortLe

public short readShortLe()

从接口复制的说明: BufferedSource

Removes two bytes from this source and returns a little-endian short.

   Buffer buffer = new Buffer()
       .writeByte(0xff)
       .writeByte(0x7f)
       .writeByte(0x0f)
       .writeByte(0x00);
   assertEquals(4, buffer.size());

   assertEquals(32767, buffer.readShortLe());
   assertEquals(2, buffer.size());

   assertEquals(15, buffer.readShortLe());
   assertEquals(0, buffer.size());
 

指定者:

readShortLe 在接口中 BufferedSource

readIntLe

public int readIntLe()

从接口复制的说明: BufferedSource

Removes four bytes from this source and returns a little-endian int.

   Buffer buffer = new Buffer()
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0x7f)
       .writeByte(0x0f)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00);
   assertEquals(8, buffer.size());

   assertEquals(2147483647, buffer.readIntLe());
   assertEquals(4, buffer.size());

   assertEquals(15, buffer.readIntLe());
   assertEquals(0, buffer.size());
 

指定者:

readIntLe 在接口中 BufferedSource

readLongLe

public long readLongLe()

从接口复制的说明: BufferedSource

Removes eight bytes from this source and returns a little-endian long.

   Buffer buffer = new Buffer()
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0xff)
       .writeByte(0x7f)
       .writeByte(0x0f)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00)
       .writeByte(0x00);
   assertEquals(16, buffer.size());

   assertEquals(9223372036854775807L, buffer.readLongLe());
   assertEquals(8, buffer.size());

   assertEquals(15, buffer.readLongLe());
   assertEquals(0, buffer.size());
 

指定者:

readLongLe 在接口中 BufferedSource

readDecimalLong

public long readDecimalLong()

从接口复制的说明: BufferedSource

Reads a long from this source in signed decimal form (i.e., as a string in base 10 with optional leading '-'). This will iterate until a non-digit character is found.

   Buffer buffer = new Buffer()
       .writeUtf8("8675309 -123 00001");

   assertEquals(8675309L, buffer.readDecimalLong());
   assertEquals(' ', buffer.readByte());
   assertEquals(-123L, buffer.readDecimalLong());
   assertEquals(' ', buffer.readByte());
   assertEquals(1L, buffer.readDecimalLong());
 

指定者:

readDecimalLong 在接口中 BufferedSource

readHexadecimalUnsignedLong

public long readHexadecimalUnsignedLong()

从接口复制的说明: BufferedSource

Reads a long form this source in hexadecimal form (i.e., as a string in base 16). This will iterate until a non-hexadecimal character is found.

   Buffer buffer = new Buffer()
       .writeUtf8("ffff CAFEBABE 10");

   assertEquals(65535L, buffer.readHexadecimalUnsignedLong());
   assertEquals(' ', buffer.readByte());
   assertEquals(0xcafebabeL, buffer.readHexadecimalUnsignedLong());
   assertEquals(' ', buffer.readByte());
   assertEquals(0x10L, buffer.readHexadecimalUnsignedLong());
 

指定者:

readHexadecimalUnsignedLong 在接口中 BufferedSource

readByteString

public ByteString readByteString()

从接口复制的说明: BufferedSource

Removes all bytes bytes from this and returns them as a byte string.

指定者:

readByteString 在接口中 BufferedSource

readByteString

public ByteString readByteString(long byteCount)
                          throws EOFException

从接口复制的说明: BufferedSource

Removes byteCount bytes from this and returns them as a byte string.

指定者:

readByteString 在接口中 BufferedSource

抛出:

EOFException

select

public int select(Options options)

从接口复制的说明: BufferedSource

Finds the first string in options that is a prefix of this buffer, consumes it from this buffer, and returns its index. If no byte string in options is a prefix of this buffer this returns -1 and no bytes are consumed.

This can be used as an alternative to BufferedSource.readByteString() or even BufferedSource.readUtf8() if the set of expected values is known in advance.

   Options FIELDS = Options.of(
       ByteString.encodeUtf8("depth="),
       ByteString.encodeUtf8("height="),
       ByteString.encodeUtf8("width="));

   Buffer buffer = new Buffer()
       .writeUtf8("width=640\n")
       .writeUtf8("height=480\n");

   assertEquals(2, buffer.select(FIELDS));
   assertEquals(640, buffer.readDecimalLong());
   assertEquals('\n', buffer.readByte());
   assertEquals(1, buffer.select(FIELDS));
   assertEquals(480, buffer.readDecimalLong());
   assertEquals('\n', buffer.readByte());
 

指定者:

select 在接口中 BufferedSource

readFully

public void readFully(Buffer sink,
 long byteCount)
               throws EOFException

从接口复制的说明: BufferedSource

Removes exactly byteCount bytes from this and appends them to sink. Throws an EOFException if the requested number of bytes cannot be read.

指定者:

readFully 在接口中 BufferedSource

抛出:

EOFException

readAll

public long readAll(Sink sink)
             throws IOException

从接口复制的说明: BufferedSource

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

指定者:

readAll 在接口中 BufferedSource

抛出:

IOException

readUtf8

public String readUtf8()

从接口复制的说明: BufferedSource

Removes all bytes from this, decodes them as UTF-8, and returns the string. Returns the empty string if this source is empty.

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

   assertEquals("Uh uh uh! You didn't say the magic word!", buffer.readUtf8());
   assertEquals(0, buffer.size());

   assertEquals("", buffer.readUtf8());
   assertEquals(0, buffer.size());
 

指定者:

readUtf8 在接口中 BufferedSource

readUtf8

public String readUtf8(long byteCount)
                throws EOFException

从接口复制的说明: BufferedSource

Removes byteCount bytes from this, decodes them as UTF-8, and returns the string.

   Buffer buffer = new Buffer()
       .writeUtf8("Uh uh uh!")
       .writeByte(' ')
       .writeUtf8("You didn't say the magic word!");
   assertEquals(40, buffer.size());

   assertEquals("Uh uh uh! You ", buffer.readUtf8(14));
   assertEquals(26, buffer.size());

   assertEquals("didn't say the", buffer.readUtf8(14));
   assertEquals(12, buffer.size());

   assertEquals(" magic word!", buffer.readUtf8(12));
   assertEquals(0, buffer.size());
 

指定者:

readUtf8 在接口中 BufferedSource

抛出:

EOFException

readString

public String readString(Charset charset)

从接口复制的说明: BufferedSource

Removes all bytes from this, decodes them as charset, and returns the string.

指定者:

readString 在接口中 BufferedSource

readString

public String readString(long byteCount,
 Charset charset)
                  throws EOFException

从接口复制的说明: BufferedSource

Removes byteCount bytes from this, decodes them as charset, and returns the string.

指定者:

readString 在接口中 BufferedSource

抛出:

EOFException

readUtf8Line

@Nullable
public String readUtf8Line()
                    throws EOFException

从接口复制的说明: BufferedSource

Removes and returns characters up to but not including the next line break. A line break is either "\n" or "\r\n"; these characters are not included in the result.

   Buffer buffer = new Buffer()
       .writeUtf8("I'm a hacker!\n")
       .writeUtf8("That's what I said: you're a nerd.\n")
       .writeUtf8("I prefer to be called a hacker!\n");
   assertEquals(81, buffer.size());

   assertEquals("I'm a hacker!", buffer.readUtf8Line());
   assertEquals(67, buffer.size());

   assertEquals("That's what I said: you're a nerd.", buffer.readUtf8Line());
   assertEquals(32, buffer.size());

   assertEquals("I prefer to be called a hacker!", buffer.readUtf8Line());
   assertEquals(0, buffer.size());

   assertEquals(null, buffer.readUtf8Line());
   assertEquals(0, buffer.size());
 

On the end of the stream this method returns null, just like BufferedReader. If the source doesn't end with a line break then an implicit line break is assumed. Null is returned once the source is exhausted. Use this for human-generated data, where a trailing line break is optional.

指定者:

readUtf8Line 在接口中 BufferedSource

抛出:

EOFException

readUtf8LineStrict

public String readUtf8LineStrict()
                          throws EOFException

从接口复制的说明: BufferedSource

Removes and returns characters up to but not including the next line break. A line break is either "\n" or "\r\n"; these characters are not included in the result.

On the end of the stream this method throws. Every call must consume either '\r\n' or '\n'. If these characters are absent in the stream, an EOFException is thrown. Use this for machine-generated data where a missing line break implies truncated input.

指定者:

readUtf8LineStrict 在接口中 BufferedSource

抛出:

EOFException

readUtf8LineStrict

public String readUtf8LineStrict(long limit)
                          throws EOFException

从接口复制的说明: BufferedSource

Like BufferedSource.readUtf8LineStrict(), except this allows the caller to specify the longest allowed match. Use this to protect against streams that may not include "\n" or "\r\n".

The returned string will have at most limit UTF-8 bytes, and the maximum number of bytes scanned is limit + 2. If limit == 0 this will always throw an EOFException because no bytes will be scanned.

This method is safe. No bytes are discarded if the match fails, and the caller is free to try another match:

   Buffer buffer = new Buffer();
   buffer.writeUtf8("12345\r\n");

   // This will throw! There must be \r\n or \n at the limit or before it.
   buffer.readUtf8LineStrict(4);

   // No bytes have been consumed so the caller can retry.
   assertEquals("12345", buffer.readUtf8LineStrict(5));
 

指定者:

readUtf8LineStrict 在接口中 BufferedSource

抛出:

EOFException

readUtf8CodePoint

public int readUtf8CodePoint()
                      throws EOFException

从接口复制的说明: BufferedSource

Removes and returns a single UTF-8 code point, reading between 1 and 4 bytes as necessary.

If this source is exhausted before a complete code point can be read, this throws an EOFException and consumes no input.

If this source doesn't start with a properly-encoded UTF-8 code point, this method will remove 1 or more non-UTF-8 bytes and return the replacement character (U+FFFD). This covers encoding problems (the input is not properly-encoded UTF-8), characters out of range (beyond the 0x10ffff limit of Unicode), code points for UTF-16 surrogates (U+d800..U+dfff) and overlong encodings (such as 0xc080 for the NUL character in modified UTF-8).

指定者:

readUtf8CodePoint 在接口中 BufferedSource

抛出:

EOFException

readByteArray

public byte[] readByteArray()

从接口复制的说明: BufferedSource

Removes all bytes from this and returns them as a byte array.

指定者:

readByteArray 在接口中 BufferedSource

readByteArray

public byte[] readByteArray(long byteCount)
                     throws EOFException

从接口复制的说明: BufferedSource

Removes byteCount bytes from this and returns them as a byte array.

指定者:

readByteArray 在接口中 BufferedSource

抛出:

EOFException

read

public int read(byte[] sink)

从接口复制的说明: BufferedSource

Removes up to sink.length bytes from this and copies them into sink. Returns the number of bytes read, or -1 if this source is exhausted.

指定者:

read 在接口中 BufferedSource

readFully

public void readFully(byte[] sink)
               throws EOFException

从接口复制的说明: BufferedSource

Removes exactly sink.length bytes from this and copies them into sink. Throws an EOFException if the requested number of bytes cannot be read.

指定者:

readFully 在接口中 BufferedSource

抛出:

EOFException

read

public int read(byte[] sink,
 int offset,
 int byteCount)

从接口复制的说明: BufferedSource

Removes up to byteCount bytes from this and copies them into sink at offset. Returns the number of bytes read, or -1 if this source is exhausted.

指定者:

read 在接口中 BufferedSource

read

public int read(ByteBuffer sink)
         throws IOException

指定者:

read 在接口中 ReadableByteChannel

抛出:

IOException

clear

public final void clear()

Discards all bytes in this buffer. Calling this method when you're done with a buffer will return its segments to the pool.

skip

public void skip(long byteCount)
          throws EOFException

Discards byteCount bytes from the head of this buffer.

指定者:

skip 在接口中 BufferedSource

抛出:

EOFException

write

public Buffer write(ByteString byteString)

指定者:

write 在接口中 BufferedSink

writeUtf8

public Buffer writeUtf8(String string)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeUtf8 在接口中 BufferedSink

writeUtf8

public Buffer writeUtf8(String string,
 int beginIndex,
 int endIndex)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeUtf8 在接口中 BufferedSink

writeUtf8CodePoint

public Buffer writeUtf8CodePoint(int codePoint)

从接口复制的说明: BufferedSink

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

指定者:

writeUtf8CodePoint 在接口中 BufferedSink

writeString

public Buffer writeString(String string,
 Charset charset)

从接口复制的说明: BufferedSink

Encodes string in charset and writes it to this sink.

指定者:

writeString 在接口中 BufferedSink

writeString

public Buffer writeString(String string,
 int beginIndex,
 int endIndex,
 Charset charset)

从接口复制的说明: BufferedSink

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

指定者:

writeString 在接口中 BufferedSink

write

public Buffer write(byte[] source)

从接口复制的说明: BufferedSink

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

指定者:

write 在接口中 BufferedSink

write

public Buffer write(byte[] source,
 int offset,
 int byteCount)

从接口复制的说明: BufferedSink

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

指定者:

write 在接口中 BufferedSink

write

public int write(ByteBuffer source)
          throws IOException

指定者:

write 在接口中 WritableByteChannel

抛出:

IOException

writeAll

public long writeAll(Source source)
              throws IOException

从接口复制的说明: BufferedSink

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.

指定者:

writeAll 在接口中 BufferedSink

抛出:

IOException

write

public BufferedSink write(Source source,
 long byteCount)
                   throws IOException

从接口复制的说明: BufferedSink

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

指定者:

write 在接口中 BufferedSink

抛出:

IOException

writeByte

public Buffer writeByte(int b)

从接口复制的说明: BufferedSink

Writes a byte to this sink.

指定者:

writeByte 在接口中 BufferedSink

writeShort

public Buffer writeShort(int s)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeShort 在接口中 BufferedSink

writeShortLe

public Buffer writeShortLe(int s)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeShortLe 在接口中 BufferedSink

writeInt

public Buffer writeInt(int i)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeInt 在接口中 BufferedSink

writeIntLe

public Buffer writeIntLe(int i)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeIntLe 在接口中 BufferedSink

writeLong

public Buffer writeLong(long v)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeLong 在接口中 BufferedSink

writeLongLe

public Buffer writeLongLe(long v)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeLongLe 在接口中 BufferedSink

writeDecimalLong

public Buffer writeDecimalLong(long v)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeDecimalLong 在接口中 BufferedSink

writeHexadecimalUnsignedLong

public Buffer writeHexadecimalUnsignedLong(long v)

从接口复制的说明: BufferedSink

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());
 

指定者:

writeHexadecimalUnsignedLong 在接口中 BufferedSink

write

public void write(Buffer source,
 long byteCount)

从接口复制的说明: Sink

Removes byteCount bytes from source and appends them to this.

指定者:

write 在接口中 Sink

read

public long read(Buffer sink,
 long byteCount)

从接口复制的说明: Source

Removes at least 1, and up to byteCount bytes from this and appends them to sink. Returns the number of bytes read, or -1 if this source is exhausted.

指定者:

read 在接口中 Source

indexOf

public long indexOf(byte b)

从接口复制的说明: BufferedSource

Equivalent to indexOf(b, 0).

指定者:

indexOf 在接口中 BufferedSource

indexOf

public long indexOf(byte b,
 long fromIndex)

Returns the index of b in this at or beyond fromIndex, or -1 if this buffer does not contain b in that range.

指定者:

indexOf 在接口中 BufferedSource

indexOf

public long indexOf(byte b,
 long fromIndex,
 long toIndex)

从接口复制的说明: BufferedSource

Returns the index of b if it is found in the range of fromIndex inclusive to toIndex exclusive. If b isn't found, or if fromIndex == toIndex, then -1 is returned.

The scan terminates at either toIndex or the end of the buffer, whichever comes first. The maximum number of bytes scanned is toIndex-fromIndex.

指定者:

indexOf 在接口中 BufferedSource

indexOf

public long indexOf(ByteString bytes)
             throws IOException

从接口复制的说明: BufferedSource

Equivalent to indexOf(bytes, 0).

指定者:

indexOf 在接口中 BufferedSource

抛出:

IOException

indexOf

public long indexOf(ByteString bytes,
 long fromIndex)
             throws IOException

从接口复制的说明: BufferedSource

Returns the index of the first match for bytes in the buffer at or after fromIndex. This expands the buffer as necessary until bytes is found. This reads an unbounded number of bytes into the buffer. Returns -1 if the stream is exhausted before the requested bytes are found.

   ByteString MOVE = ByteString.encodeUtf8("move");

   Buffer buffer = new Buffer();
   buffer.writeUtf8("Don't move! He can't see us if we don't move.");

   assertEquals(6,  buffer.indexOf(MOVE));
   assertEquals(40, buffer.indexOf(MOVE, 12));
 

指定者:

indexOf 在接口中 BufferedSource

抛出:

IOException

indexOfElement

public long indexOfElement(ByteString targetBytes)

从接口复制的说明: BufferedSource

Equivalent to indexOfElement(targetBytes, 0).

指定者:

indexOfElement 在接口中 BufferedSource

indexOfElement

public long indexOfElement(ByteString targetBytes,
 long fromIndex)

从接口复制的说明: BufferedSource

Returns the first index in this buffer that is at or after fromIndex and that contains any of the bytes in targetBytes. This expands the buffer as necessary until a target byte is found. This reads an unbounded number of bytes into the buffer. Returns -1 if the stream is exhausted before the requested byte is found.

   ByteString ANY_VOWEL = ByteString.encodeUtf8("AEOIUaeoiu");

   Buffer buffer = new Buffer();
   buffer.writeUtf8("Dr. Alan Grant");

   assertEquals(4,  buffer.indexOfElement(ANY_VOWEL));    // 'A' in 'Alan'.
   assertEquals(11, buffer.indexOfElement(ANY_VOWEL, 9)); // 'a' in 'Grant'.
 

指定者:

indexOfElement 在接口中 BufferedSource

rangeEquals

public boolean rangeEquals(long offset,
 ByteString bytes)

从接口复制的说明: BufferedSource

Returns true if the bytes at offset in this source equal bytes. This expands the buffer as necessary until a byte does not match, all bytes are matched, or if the stream is exhausted before enough bytes could determine a match.

   ByteString simonSays = ByteString.encodeUtf8("Simon says:");

   Buffer standOnOneLeg = new Buffer().writeUtf8("Simon says: Stand on one leg.");
   assertTrue(standOnOneLeg.rangeEquals(0, simonSays));

   Buffer payMeMoney = new Buffer().writeUtf8("Pay me $1,000,000.");
   assertFalse(payMeMoney.rangeEquals(0, simonSays));
 

指定者:

rangeEquals 在接口中 BufferedSource

rangeEquals

public boolean rangeEquals(long offset,
 ByteString bytes,
 int bytesOffset,
 int byteCount)

从接口复制的说明: BufferedSource

Returns true if byteCount bytes at offset in this source equal bytes at bytesOffset. This expands the buffer as necessary until a byte does not match, all bytes are matched, or if the stream is exhausted before enough bytes could determine a match.

指定者:

rangeEquals 在接口中 BufferedSource

flush

public void flush()

从接口复制的说明: BufferedSink

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());
 

指定者:

flush 在接口中 BufferedSink

指定者:

flush 在接口中 Flushable

指定者:

flush 在接口中 Sink

isOpen

public boolean isOpen()

指定者:

isOpen 在接口中 Channel

close

public void close()

从接口复制的说明: Source

Closes this source and releases the resources held by this source. It is an error to read a closed source. It is safe to close a source more than once.

指定者:

close 在接口中 AutoCloseable

指定者:

close 在接口中 Channel

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 Sink

指定者:

close 在接口中 Source

timeout

public Timeout timeout()

从接口复制的说明: Source

Returns the timeout for this source.

指定者:

timeout 在接口中 Sink

指定者:

timeout 在接口中 Source

md5

public final ByteString md5()

Returns the 128-bit MD5 hash of this buffer.

sha1

public final ByteString sha1()

Returns the 160-bit SHA-1 hash of this buffer.

sha256

public final ByteString sha256()

Returns the 256-bit SHA-256 hash of this buffer.

sha512

public final ByteString sha512()

Returns the 512-bit SHA-512 hash of this buffer.

hmacSha1

public final ByteString hmacSha1(ByteString key)

Returns the 160-bit SHA-1 HMAC of this buffer.

hmacSha256

public final ByteString hmacSha256(ByteString key)

Returns the 256-bit SHA-256 HMAC of this buffer.

hmacSha512

public final ByteString hmacSha512(ByteString key)

Returns the 512-bit SHA-512 HMAC of this buffer.

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

toString

public String toString()

Returns a human-readable string that describes the contents of this buffer. Typically this is a string like [text=Hello] or [hex=0000ffff].

覆盖:

toString 在类中 Object

clone

public Buffer clone()

Returns a deep copy of this buffer.

snapshot

public final ByteString snapshot()

Returns an immutable copy of this buffer as a byte string.

snapshot

public final ByteString snapshot(int byteCount)

Returns an immutable copy of the first byteCount bytes of this buffer as a byte string.

readUnsafe

public final Buffer.UnsafeCursor readUnsafe()

readUnsafe

public final Buffer.UnsafeCursor readUnsafe(Buffer.UnsafeCursor unsafeCursor)

readAndWriteUnsafe

public final Buffer.UnsafeCursor readAndWriteUnsafe()

readAndWriteUnsafe

public final Buffer.UnsafeCursor readAndWriteUnsafe(Buffer.UnsafeCursor unsafeCursor)