CpioHeader (Redline 1.2.8 API)

java.lang.Object
- org.redline_rpm.payload.CpioHeader

```
public class CpioHeader
extends Object
```
This class provides a means to read file content from the compressed CPIO stream that is the body of an RPM distributable. Iterative calls to to read header will result in a header description being returned which includes a count of how many bytes to read from the channel for the file content.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BDEV`
`static int`	`CDEV`
`protected Charset`	`charset`
`protected int`	`checksum`
`protected static int`	`CPIO_HEADER`
`static int`	`DEFAULT_DIRECTORY_PERMISSION`
`static int`	`DEFAULT_FILE_PERMISSION`
`static String`	`DEFAULT_GROUP`
`static String`	`DEFAULT_USERNAME`
`protected int`	`devMajor`
`protected int`	`devMinor`
`static int`	`DIR`
`static int`	`FIFO`
`static int`	`FILE`
`protected int`	`filesize`
`protected int`	`flags`
`protected int`	`gid`
`protected String`	`gname`
`protected int`	`inode`
`protected static String`	`MAGIC`
`protected long`	`mtime`
`protected String`	`name`
`protected int`	`nlink`
`protected int`	`permissions`
`protected int`	`rdevMajor`
`protected int`	`rdevMinor`
`static int`	`SOCKET`
`static int`	`SYMLINK`
`protected static String`	`TRAILER`
`protected int`	`type`
`protected int`	`uid`
`protected String`	`uname`
`protected int`	`verifyFlags`

Constructor Summary

Constructors
Constructor and Description
`CpioHeader()`
`CpioHeader(File file)`
`CpioHeader(String name)`
`CpioHeader(String name, File file)`
`CpioHeader(String name, URL url)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getDevMajor()`
`int`	`getDevMinor()`
`int`	`getFileSize()`
`int`	`getFlags()`
`String`	`getGname()`
`int`	`getInode()`
`int`	`getMode()`
`int`	`getMtime()`
`String`	`getName()`
`int`	`getPermissions()`
`int`	`getRdevMajor()`
`int`	`getRdevMinor()`
`int`	`getType()`
`String`	`getUname()`
`int`	`getVerifyFlags()`
`boolean`	`isLast()` Test to see if this is the last header, and is therefore the end of the archive.
`protected String`	`pad(CharSequence sequence, int length)`
`int`	`read(ReadableByteChannel channel, int total)`
`protected CharSequence`	`readChars(CharBuffer buffer, int length)`
`protected int`	`readEight(CharBuffer buffer)`
`protected CharSequence`	`readSix(CharBuffer buffer)`
`void`	`setFileSize(int filesize)`
`void`	`setFlags(int flags)`
`void`	`setGname(String gname)`
`void`	`setInode(int inode)`
`void`	`setLast()`
`void`	`setMtime(long mtime)`
`void`	`setName(String name)`
`void`	`setPermissions(int permissions)`
`void`	`setType(int type)`
`void`	`setUname(String uname)`
`void`	`setVerifyFlags(int verifyFlags)`
`protected int`	`skip(ReadableByteChannel channel, int total)`
`int`	`skip(WritableByteChannel channel, int total)`
`String`	`toString()`
`int`	`write(WritableByteChannel channel, int total)` Write the content for the CPIO header, including the name immediately following.
`protected ByteBuffer`	`writeEight(int data)`
`protected ByteBuffer`	`writeSix(CharSequence data)`

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

Field Detail

DEFAULT_FILE_PERMISSION
```
public static final int DEFAULT_FILE_PERMISSION
```
See Also:

Constant Field Values

DEFAULT_DIRECTORY_PERMISSION
```
public static final int DEFAULT_DIRECTORY_PERMISSION
```
See Also:

Constant Field Values

DEFAULT_USERNAME

public static final String DEFAULT_USERNAME

See Also:: Constant Field Values

DEFAULT_GROUP

public static final String DEFAULT_GROUP

See Also:: Constant Field Values

FIFO
```
public static final int FIFO
```
See Also:

Constant Field Values

CDEV
```
public static final int CDEV
```
See Also:

Constant Field Values

DIR
```
public static final int DIR
```
See Also:

Constant Field Values

BDEV
```
public static final int BDEV
```
See Also:

Constant Field Values

FILE
```
public static final int FILE
```
See Also:

Constant Field Values

SYMLINK
```
public static final int SYMLINK
```
See Also:

Constant Field Values

SOCKET
```
public static final int SOCKET
```
See Also:

Constant Field Values

CPIO_HEADER
```
protected static final int CPIO_HEADER
```
See Also:

Constant Field Values

MAGIC
```
protected static final String MAGIC
```
See Also:

Constant Field Values

TRAILER
```
protected static final String TRAILER
```
See Also:

Constant Field Values

charset
```
protected Charset charset
```

inode
```
protected int inode
```

type
```
protected int type
```

permissions
```
protected int permissions
```

uid
```
protected int uid
```

uname
```
protected String uname
```

gid
```
protected int gid
```

gname
```
protected String gname
```

nlink
```
protected int nlink
```

mtime
```
protected long mtime
```

filesize
```
protected int filesize
```

devMinor
```
protected int devMinor
```

devMajor
```
protected int devMajor
```

rdevMinor
```
protected int rdevMinor
```

rdevMajor
```
protected int rdevMajor
```

checksum
```
protected int checksum
```

name
```
protected String name
```

flags
```
protected int flags
```

verifyFlags
```
protected int verifyFlags
```

Constructor Detail

CpioHeader
```
public CpioHeader()
```

CpioHeader
```
public CpioHeader(String name)
```

CpioHeader
```
public CpioHeader(File file)
```

CpioHeader

public CpioHeader(String name,
                  URL url)

CpioHeader

public CpioHeader(String name,
                  File file)

Method Detail

getType
```
public int getType()
```

getPermissions
```
public int getPermissions()
```

getRdevMajor
```
public int getRdevMajor()
```

getRdevMinor
```
public int getRdevMinor()
```

getDevMajor
```
public int getDevMajor()
```

getDevMinor
```
public int getDevMinor()
```

getMtime
```
public int getMtime()
```

getInode
```
public int getInode()
```

getName
```
public String getName()
```

getFlags
```
public int getFlags()
```

getVerifyFlags
```
public int getVerifyFlags()
```

getMode
```
public int getMode()
```

setPermissions

public void setPermissions(int permissions)

setType
```
public void setType(int type)
```

setFileSize

public void setFileSize(int filesize)

setMtime
```
public void setMtime(long mtime)
```

setInode
```
public void setInode(int inode)
```

setFlags
```
public void setFlags(int flags)
```

setVerifyFlags

public void setVerifyFlags(int verifyFlags)

getUname
```
public String getUname()
```

getGname
```
public String getGname()
```

setUname
```
public void setUname(String uname)
```

setGname
```
public void setGname(String gname)
```

isLast
```
public boolean isLast()
```
Test to see if this is the last header, and is therefore the end of the archive. Uses the CPIO magic trailer value to denote the last header of the stream.

Returns:

true if last, false if not

setLast
```
public void setLast()
```

setName
```
public void setName(String name)
```

getFileSize
```
public int getFileSize()
```

writeSix

protected ByteBuffer writeSix(CharSequence data)

writeEight

protected ByteBuffer writeEight(int data)

readSix

protected CharSequence readSix(CharBuffer buffer)

readEight

protected int readEight(CharBuffer buffer)

readChars

protected CharSequence readChars(CharBuffer buffer,
                                 int length)

pad

protected String pad(CharSequence sequence,
                     int length)

skip

protected int skip(ReadableByteChannel channel,
                   int total)
            throws IOException

Throws:: IOException

skip

public int skip(WritableByteChannel channel,
                int total)
         throws IOException

Throws:: IOException

read

public int read(ReadableByteChannel channel,
                int total)
         throws IOException

Throws:: IOException

write
```
public int write(WritableByteChannel channel,
                 int total)
          throws IOException
```
Write the content for the CPIO header, including the name immediately following. The name data is rounded to the nearest 2 byte boundary as CPIO requires by appending a null when needed.

Parameters:

channel - which channel to write on

total - current size of header?

Returns:

total written and skipped

Throws:

IOException - there was an IO error

toString
```
public String toString()
```
Overrides:

toString in class Object

Class CpioHeader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_FILE_PERMISSION

DEFAULT_DIRECTORY_PERMISSION

DEFAULT_USERNAME

DEFAULT_GROUP

FIFO

CDEV

DIR

BDEV

FILE

SYMLINK

SOCKET

CPIO_HEADER

MAGIC

TRAILER

charset

inode

type

permissions

uid

uname

gid

gname

nlink

mtime

filesize

devMinor

devMajor

rdevMinor

rdevMajor

checksum

name

flags

verifyFlags

Constructor Detail

CpioHeader

CpioHeader

CpioHeader

CpioHeader

CpioHeader

Method Detail

getType

getPermissions

getRdevMajor

getRdevMinor

getDevMajor

getDevMinor

getMtime

getInode

getName

getFlags

getVerifyFlags

getMode

setPermissions

setType

setFileSize

setMtime

setInode

setFlags

setVerifyFlags

getUname

getGname

setUname

setGname

isLast

setLast

setName

getFileSize

writeSix

writeEight

readSix

readEight

readChars

pad

skip