cx.ath.matthew.io

Class ExecInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

cx.ath.matthew.io.ExecInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class ExecInputStream
extends FilterInputStream

Class to pipe an InputStream through a command using stdin/stdout. E.g.

    Reader r = new InputStreamReader(new ExecInputStream(new FileInputStream("file"), "command"));
 

Field Summary

Fields

Modifier and Type	Field and Description
private InOutCopier	copy
private Process	proc
private OutputStream	stdin
private InputStream	stdout

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
ExecInputStream(InputStream is, Process p) Create a new ExecInputStream on the given InputStream using the process to filter the stream.
ExecInputStream(InputStream is, String cmd) Create a new ExecInputStream on the given InputStream using the process to filter the stream.
ExecInputStream(InputStream is, String[] cmd) Create a new ExecInputStream on the given InputStream using the process to filter the stream.
ExecInputStream(InputStream is, String[] cmd, String[] env) Create a new ExecInputStream on the given InputStream using the process to filter the stream.
ExecInputStream(InputStream is, String cmd, String[] env) Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
void	close()
void	finalize()
void	flush()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.lang.Object

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

Field Detail

proc

private Process proc

stdout

private InputStream stdout

stdin

private OutputStream stdin

copy

private InOutCopier copy

Constructor Detail

ExecInputStream

public ExecInputStream(InputStream is,
               Process p)
                throws IOException

Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Parameters:

is - Reads from this InputStream

p - Filters data through stdin/out on this Process

Throws:

IOException

ExecInputStream

public ExecInputStream(InputStream is,
               String cmd)
                throws IOException

Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Parameters:

is - Reads from this InputStream

cmd - Creates a Process from this string to filter data through stdin/out

Throws:

IOException

ExecInputStream

public ExecInputStream(InputStream is,
               String[] cmd)
                throws IOException

Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Parameters:

is - Reads from this InputStream

cmd - Creates a Process from this string array (command, arg, ...) to filter data through stdin/out

Throws:

IOException

ExecInputStream

public ExecInputStream(InputStream is,
               String cmd,
               String[] env)
                throws IOException

Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Parameters:

is - Reads from this InputStream

cmd - Creates a Process from this string to filter data through stdin/out

env - Setup the environment for the command

Throws:

IOException

ExecInputStream

public ExecInputStream(InputStream is,
               String[] cmd,
               String[] env)
                throws IOException

Create a new ExecInputStream on the given InputStream using the process to filter the stream.

Parameters:

is - Reads from this InputStream

cmd - Creates a Process from this string array (command, arg, ...) to filter data through stdin/out

env - Setup the environment for the command

Throws:

IOException

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class FilterInputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
       int off,
       int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class FilterInputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

reset

public void reset()

Overrides:

reset in class FilterInputStream

finalize

public void finalize()

Overrides:

finalize in class Object