ua.gradsoft.termware.envs
Class SystemLogEnv

java.lang.Object
  ua.gradsoft.termware.envs.SystemLogEnv

All Implemented Interfaces:

IEnv

public class SystemLogEnv
extends Object
implements IEnv

the same as SystemEnv, but in addition set input, output and log streams to appropriative files.

Constructor Summary

SystemLogEnv()

SystemLogEnv(Term t)
t must be nil, or must look like

Method Summary

void	close() called before shutown of term system
Reader	getInput() get input
PrintWriter	getLog() get log stream
PrintWriter	getOutput() get standard output
void	setInput(Reader input) set input
void	setLog(PrintWriter log) set log stream
void	setOutput(PrintWriter output) set Output Stream.
void	show(TermWareException ex) show exception.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemLogEnv

public SystemLogEnv()

SystemLogEnv

public SystemLogEnv(Term t)
             throws IOException,
                    TermWareException

t must be nil, or must look like

 env(t_1,t_2,t_3)
 where 
   t_1 - string or atom 'system', which means standart input, or name of
         input file.
   t_2 - string or atom 'system', which means standart output, or name of
         output file.
   t_3 - string or atom 'system', which means standart error output, or 
         name of log file.

Throws:

IOException

TermWareException

Method Detail

getOutput

public PrintWriter getOutput()

get standard output

Specified by:

getOutput in interface IEnv

setOutput

public void setOutput(PrintWriter output)

set Output Stream.

getInput

public Reader getInput()

get input

Specified by:

getInput in interface IEnv

setInput

public void setInput(Reader input)
              throws IOException

set input

Throws:

IOException

getLog

public PrintWriter getLog()

get log stream

Specified by:

getLog in interface IEnv

setLog

public void setLog(PrintWriter log)

set log stream

show

public void show(TermWareException ex)

show exception.

Specified by:

show in interface IEnv

close

public void close()

Description copied from interface: IEnv

called before shutown of term system

Specified by:

close in interface IEnv