Package org.aoju.bus.core.io.source

Class PeekSource

java.lang.Object

org.aoju.bus.core.io.source.PeekSource

All Implemented Interfaces:

Closeable, AutoCloseable, Source

public class PeekSource
extends Object
implements Source

一个Source,它可以窥视上游的BufferSource并允许读取和 展开缓冲数据而不使用它 这是通过请求额外的数据吗 如果需要,则复制上游源文件,如果需要,则从上游源文件的内部缓冲区复制 此源还维护其上游缓冲区的起始位置的快照 每次读取时验证 如果从上游缓冲区读取,则此源将变为 无效,在以后的读取中抛出IllegalStateException

Since:

Java 17+

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor	Description
PeekSource(BufferSource upstream)

Method Summary

Modifier and Type	Method	Description
void	close()	关闭此源并释放此源持有的资源.
long	read(Buffer sink, long byteCount)	从中删除至少1个字节，最多为byteCount字节， 并将它们 附加到sink。
Timeout	timeout()	返回此源的超时时间.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PeekSource

public PeekSource(BufferSource upstream)

Method Details

read

public long read(Buffer sink,
 long byteCount)
          throws IOException

Description copied from interface: Source

从中删除至少1个字节，最多为byteCount字节， 并将它们 附加到sink。返回读取的字节数，如果该源已耗尽，则返回-1

Specified by:

read in interface Source

Parameters:

sink - 缓冲

byteCount - 长度大小

Returns:

the long

Throws:

IOException - IOException IOException.

timeout

public Timeout timeout()

Description copied from interface: Source

返回此源的超时时间.

Specified by:

timeout in interface Source

Returns:

超时时间

close

public void close()
           throws IOException

Description copied from interface: Source

关闭此源并释放此源持有的资源. 读取闭源是一个错误。多次关闭源是安全的.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface Source

Throws:

IOException - IOException IOException.