Package org.jline.console

Interface ConsoleEngine

All Superinterfaces:

CommandRegistry

All Known Implementing Classes:

ConsoleEngineImpl

public interface ConsoleEngine
extends CommandRegistry

Manage console variables, commands and script executions.

Author:

Matti Rinta-Nikkola

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ConsoleEngine.ExecutionResult
static class	ConsoleEngine.WidgetCreator

Nested classes/interfaces inherited from interface org.jline.console.CommandRegistry

CommandRegistry.CommandSession

Field Summary

Fields

Modifier and Type	Field	Description
static final String	VAR_NANORC	Console string variable of nanorc file full path

Method Summary

Modifier and Type	Method	Description
<T> T	consoleOption(String option, T defval)	Read console option value
default Object	execute(File script)	Executes either JLine or ScriptEngine script.
default Object	execute(File script, String rawLine, String[] args)	Executes either JLine or ScriptEngine script.
Object	execute(String name, String rawLine, String[] args)	Executes command line that does not contain known command by the system registry.
Object	execute(Path script, String rawLine, String[] args)	Executes either JLine or ScriptEngine script.
boolean	executeWidget(Object function)	Execute widget function
String	expandCommandLine(String line)	Substitutes command line with system registry invoke method call.
Object[]	expandParameters(String[] args)	Substituting args references with their values.
String	expandToList(List<String> params)	Expands parameter list to string
String	getAlias(String name)	Returns alias 'name' value
List<String>	getNamedPipes()	Returns named pipe names
Map<String,List<String>>	getPipes()	Returns defined pipes
Object	getVariable(String name)	Get variable value
boolean	hasAlias(String name)	Returns true if alias 'name' exists
boolean	hasVariable(String name)	Test if variable with name exists
boolean	isExecuting()	Checks if consoleEngine is executing script
void	persist(Path file, Object object)	Persist object to file
static String	plainCommand(String command)	Removes the command name first character if it is colon
ConsoleEngine.ExecutionResult	postProcess(Object result)	Post processes execution result.
ConsoleEngine.ExecutionResult	postProcess(String line, Object result, String output)	Post processes execution result.
void	println(Object object)	Print object.
void	purge()	Delete temporary console variables
void	putVariable(String name, Object value)	Create console variable
List<Completer>	scriptCompleters()	Returns script and variable completers
Map<String,Boolean>	scripts()	Returns all scripts found from PATH
void	setConsoleOption(String name, Object value)	Set console option value
void	setLineReader(LineReader reader)	Sets lineReader
void	setScriptExtension(String extension)	Sets file name extension used by console scripts
void	setSystemRegistry(SystemRegistry systemRegistry)	Sets systemRegistry
Object	slurp(Path file)	Read object from file
void	trace(Object object)	Print object if trace is enabled

Methods inherited from interface org.jline.console.CommandRegistry

commandAliases, commandDescription, commandInfo, commandNames, compileCompleters, hasCommand, invoke, name

Field Details

VAR_NANORC

static final String VAR_NANORC

Console string variable of nanorc file full path

See Also:

• Constant Field Values

Method Details

plainCommand

static String plainCommand(String command)

Removes the command name first character if it is colon

Parameters:

command - the name of the command to complete

Returns:

command name without starting colon

setLineReader

void setLineReader(LineReader reader)

Sets lineReader

Parameters:

reader - LineReader

setSystemRegistry

void setSystemRegistry(SystemRegistry systemRegistry)

Sets systemRegistry

Parameters:

systemRegistry - SystemRegistry

expandParameters

Object[] expandParameters(String[] args)
                   throws Exception

Substituting args references with their values.

Parameters:

args - the arguments to be expanded

Returns:

expanded arguments

Throws:

Exception - in case of error

expandCommandLine

String expandCommandLine(String line)

Substitutes command line with system registry invoke method call.

Parameters:

line - command line to be expanded

Returns:

expanded command line

expandToList

String expandToList(List<String> params)

Expands parameter list to string

Parameters:

params - list of script parameters

Returns:

expanded parameters list

scripts

Map<String,Boolean> scripts()

Returns all scripts found from PATH

Returns:

map keys have script file names and value is true if it is console script

setScriptExtension

void setScriptExtension(String extension)

Sets file name extension used by console scripts

Parameters:

extension - console script file extension

hasAlias

boolean hasAlias(String name)

Returns true if alias 'name' exists

Parameters:

name - alias name

Returns:

true if alias exists

getAlias

String getAlias(String name)

Returns alias 'name' value

Parameters:

name - alias name

Returns:

value of alias

getPipes

Map<String,List<String>> getPipes()

Returns defined pipes

Returns:

map of defined pipes

getNamedPipes

List<String> getNamedPipes()

Returns named pipe names

Returns:

list of named pipe names

scriptCompleters

List<Completer> scriptCompleters()

Returns script and variable completers

Returns:

script and variable completers

persist

void persist(Path file,
 Object object)

Persist object to file

Parameters:

file - file where object should be written

object - object to persist

slurp

Object slurp(Path file)
      throws IOException

Read object from file

Parameters:

file - file from where object should be read

Returns:

object

Throws:

IOException - in case of error

consoleOption

<T> T consoleOption(String option,
 T defval)

Read console option value

Type Parameters:

T - option type

Parameters:

option - option name

defval - default value

Returns:

option value

setConsoleOption

void setConsoleOption(String name,
 Object value)

Set console option value

Parameters:

name - the option name

value - value to assign console option

execute

Object execute(String name,
 String rawLine,
 String[] args)
        throws Exception

Executes command line that does not contain known command by the system registry. If the line is neither JLine or ScriptEngine script it will be evaluated as ScriptEngine statement.

Parameters:

name - parsed command/script name

rawLine - raw command line

args - parsed arguments of the command

Returns:

command line execution result

Throws:

Exception - in case of error

execute

default Object execute(File script)
                throws Exception

Executes either JLine or ScriptEngine script.

Parameters:

script - script file

Returns:

script execution result

Throws:

Exception - in case of error

execute

default Object execute(File script,
 String rawLine,
 String[] args)
                throws Exception

Executes either JLine or ScriptEngine script.

Parameters:

script - script file

rawLine - raw command line

args - script arguments

Returns:

script execution result

Throws:

Exception - in case of error

execute

Object execute(Path script,
 String rawLine,
 String[] args)
        throws Exception

Executes either JLine or ScriptEngine script.

Parameters:

script - script file

rawLine - raw command line

args - script arguments

Returns:

script execution result

Throws:

Exception - in case of error

postProcess

ConsoleEngine.ExecutionResult postProcess(String line,
 Object result,
 String output)

Post processes execution result. If result is to be assigned to the console variable then method will return null.

Parameters:

line - command line

result - command result to process

output - command redirected output

Returns:

processed result

postProcess

ConsoleEngine.ExecutionResult postProcess(Object result)

Post processes execution result.

Parameters:

result - command result to process

Returns:

processed result

trace

void trace(Object object)

Print object if trace is enabled

Parameters:

object - object to print

println

void println(Object object)

Print object.

Parameters:

object - object to print

putVariable

void putVariable(String name,
 Object value)

Create console variable

Parameters:

name - name of the variable

value - value of the variable

getVariable

Object getVariable(String name)

Get variable value

Parameters:

name - name of the variable

Returns:

variable value

hasVariable

boolean hasVariable(String name)

Test if variable with name exists

Parameters:

name - name of the variable

Returns:

true if variable with name exists

purge

void purge()

Delete temporary console variables

executeWidget

boolean executeWidget(Object function)

Execute widget function

Parameters:

function - to execute

Returns:

true on success

isExecuting

boolean isExecuting()

Checks if consoleEngine is executing script

Returns:

true when executing script