ArchiveOutputStream

java.lang.Object
- java.io.OutputStream
- - org.apache.commons.compress.archivers.ArchiveOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

Direct Known Subclasses:

ArArchiveOutputStream, CpioArchiveOutputStream, TarArchiveOutputStream, ZipArchiveOutputStream
```
public abstract class ArchiveOutputStream
extends OutputStream
```
Archive output stream implementations are expected to override the OutputStream.write(byte[], int, int) method to improve performance. They should also override OutputStream.close() to ensure that any necessary trailers are added.
The normal sequence of calls when working with ArchiveOutputStreams is:
- Create ArchiveOutputStream object,
- optionally write SFX header (Zip only),
- repeat as needed:
  - putArchiveEntry(ArchiveEntry) (writes entry header),
  - OutputStream.write(byte[]) (writes entry data, as often as needed),
  - closeArchiveEntry() (closes entry),
- finish() (ends the addition of entries),
- optionally write additional data, provided format supports it,
- OutputStream.close().

Constructor Summary

Constructors

Constructor and Description
`ArchiveOutputStream()`

Method Summary

All Methods

Instance Methods

Abstract Methods

Concrete Methods

Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`canWriteEntryData(ArchiveEntry archiveEntry)` Whether this stream is able to write the given entry.
`abstract void`	`closeArchiveEntry()` Closes the archive entry, writing any trailer information that may be required.
`protected void`	`count(int written)` Increments the counter of already written bytes.
`protected void`	`count(long written)` Increments the counter of already written bytes.
`abstract ArchiveEntry`	`createArchiveEntry(File inputFile, String entryName)` Create an archive entry using the inputFile and entryName provided.
`abstract void`	`finish()` Finishes the addition of entries to this stream, without closing it.
`long`	`getBytesWritten()` Returns the current number of bytes written to this stream.
`int`	`getCount()` Deprecated. this method may yield wrong results for large archives, use #getBytesWritten instead
`abstract void`	`putArchiveEntry(ArchiveEntry entry)` Writes the headers for an archive entry to the output stream.
`void`	`write(int b)` Writes a byte to the current archive entry.

Methods inherited from class java.io.OutputStream
close, flush, write, write

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ArchiveOutputStream
```
public ArchiveOutputStream()
```
- Method Detail
  - putArchiveEntry
```
public abstract void putArchiveEntry(ArchiveEntry entry)
                              throws IOException
```
    Writes the headers for an archive entry to the output stream. The caller must then write the content to the stream and call closeArchiveEntry() to complete the process.
    
    Parameters:
    
    entry - describes the entry
    
    Throws:
    
    IOException -
  - closeArchiveEntry
```
public abstract void closeArchiveEntry()
                                throws IOException
```
    Closes the archive entry, writing any trailer information that may be required.
    
    Throws:
    
    IOException -
  - finish
```
public abstract void finish()
                     throws IOException
```
    Finishes the addition of entries to this stream, without closing it. Additional data can be written, if the format supports it.
    
    Throws:
    
    IOException - if the user forgets to close the entry.
  - createArchiveEntry
```
public abstract ArchiveEntry createArchiveEntry(File inputFile,
                                                String entryName)
                                         throws IOException
```
    Create an archive entry using the inputFile and entryName provided.
    
    Parameters:
    
    inputFile -
    
    entryName -
    
    Returns:
    
    the ArchiveEntry set up with details from the file
    
    Throws:
    
    IOException -
  - write
```
public void write(int b)
           throws IOException
```
    Writes a byte to the current archive entry.
    This method simply calls write( byte[], 0, 1 ).
    
    MUST be overridden if the OutputStream.write(byte[], int, int) method is not overridden; may be overridden otherwise.
    
    Specified by:
    
    write in class OutputStream
    
    Parameters:
    
    b - The byte to be written.
    
    Throws:
    
    IOException - on error
  - count
```
protected void count(int written)
```
    Increments the counter of already written bytes. Doesn't increment if EOF has been hit ( written == -1).
    
    Parameters:
    
    written - the number of bytes written
  - count
```
protected void count(long written)
```
    Increments the counter of already written bytes. Doesn't increment if EOF has been hit ( written == -1).
    
    Parameters:
    
    written - the number of bytes written
    
    Since:
    
    1.1
  - getCount
```
@Deprecated
public int getCount()
```
    Deprecated. this method may yield wrong results for large archives, use #getBytesWritten instead
    
    Returns the current number of bytes written to this stream.
    
    Returns:
    
    the number of written bytes
  - getBytesWritten
```
public long getBytesWritten()
```
    Returns the current number of bytes written to this stream.
    
    Returns:
    
    the number of written bytes
    
    Since:
    
    1.1
  - canWriteEntryData
```
public boolean canWriteEntryData(ArchiveEntry archiveEntry)
```
    Whether this stream is able to write the given entry.
    Some archive formats support variants or details that are not supported (yet).
    
    Parameters:
    
    archiveEntry - the entry to test
    
    Returns:
    
    This implementation always returns true.
    
    Since:
    
    1.1

Class ArchiveOutputStream

Constructor Summary

Constructors

Method Summary

Methods inherited from class java.io.OutputStream

Methods inherited from class java.lang.Object

Constructor Detail

ArchiveOutputStream

Method Detail

putArchiveEntry

closeArchiveEntry

finish

createArchiveEntry

write

count

count

getCount

getBytesWritten

canWriteEntryData