jnr.posix

Interface POSIXHandler

All Known Implementing Classes:

DefaultPOSIXHandler

public interface POSIXHandler

The POSIXHandler class allows you do implement the runtime-specific behavior you need in such a way that it is insulated from the implementation of the POSIX library. Implementing each of the methods in this interface should give you are working POSIX implementation.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	POSIXHandler.WARNING_ID

Method Summary

Methods

Modifier and Type	Method and Description
void	error(jnr.constants.platform.Errno error, String extraData)
void	error(jnr.constants.platform.Errno error, String methodName, String extraData)
File	getCurrentWorkingDirectory()
String[]	getEnv()
PrintStream	getErrorStream() Get your runtime's current ErrorStream
InputStream	getInputStream()
PrintStream	getOutputStream()
int	getPID() Get your runtime's process ID.
boolean	isVerbose()
void	unimplementedError(String methodName) Specify that posix method is unimplemented.
void	warn(POSIXHandler.WARNING_ID id, String message, Object... data)

Method Detail

error

void error(jnr.constants.platform.Errno error,
         String extraData)

error

void error(jnr.constants.platform.Errno error,
         String methodName,
         String extraData)

unimplementedError

void unimplementedError(String methodName)

Specify that posix method is unimplemented. In JRuby we generate an exception with this.

Parameters:

methodName - the POSIX method that failed

warn

void warn(POSIXHandler.WARNING_ID id,
        String message,
        Object... data)

isVerbose

boolean isVerbose()

Returns:

should we provide verbose output about POSIX activities

getCurrentWorkingDirectory

File getCurrentWorkingDirectory()

Returns:

current working directory of your runtime.

getEnv

String[] getEnv()

Returns:

current set of environment variables of your runtime.

getInputStream

InputStream getInputStream()

Returns:

your runtime's current input stream

getOutputStream

PrintStream getOutputStream()

Returns:

your runtime's current output stream

getPID

int getPID()

Get your runtime's process ID. This is only intended for non-native POSIX support (e.g. environments where JNA cannot load or security restricted environments). In JRuby we found a number of packages which would rather have some identity for the runtime than nothing. Note: If you do not want this to work you impl can just call unimplementedError(String).

Returns:

your runtime's process ID

getErrorStream

PrintStream getErrorStream()

Get your runtime's current ErrorStream

Returns:

your runtime's current error stream