Package org.jline.console.impl

Class SystemRegistryImpl

java.lang.Object

org.jline.console.impl.SystemRegistryImpl

All Implemented Interfaces:

org.jline.builtins.ConsoleOptionGetter, CommandRegistry, SystemRegistry

Direct Known Subclasses:

SimpleSystemRegistryImpl

public class SystemRegistryImpl
extends Object
implements SystemRegistry

Aggregate command registries.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	SystemRegistryImpl.CommandData
static enum	SystemRegistryImpl.Pipe
static class	SystemRegistryImpl.UnknownCommandException

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

CommandRegistry.CommandSession

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

SystemRegistry.Registeries

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.jline.builtins.ConfigurationPath	configPath
protected final org.jline.reader.Parser	parser
protected final Supplier<Path>	workDir

Constructor Summary

Constructors

Constructor	Description
SystemRegistryImpl(org.jline.reader.Parser parser, org.jline.terminal.Terminal terminal, Supplier<Path> workDir, org.jline.builtins.ConfigurationPath configPath)

Method Summary

Modifier and Type	Method	Description
void	addCompleter(org.jline.reader.Completer completer)
void	cleanUp()	Deletes temporary console variables and resets output streams.
void	close()	Orderly closes this system registry.
Map<String,String>	commandAliases()	Returns a map of alias-to-command names known by this registry.
CmdDesc	commandDescription(List<String> args)	Returns a command description for use in the JLine Widgets framework.
CmdDesc	commandDescription(CmdLine line)	Returns a description for a command, method, or syntax for use in the JLine Widgets framework.
List<String>	commandInfo(String command)	Returns a short info about command known by this registry.
Set<String>	commandNames()	Returns the command names known by this registry.
org.jline.reader.impl.completer.SystemCompleter	compileCompleters()	Returns a SystemCompleter that can provide detailed completion information for all registered commands.
org.jline.reader.Completer	completer()	Returns a command completer that includes console variable and script completion.
ConsoleEngine	consoleEngine()
Object	consoleOption(String name)	Returns the value of a console option.
<T> T	consoleOption(String name, T defVal)	Returns the value of a console option with a default value if the option doesn't exist.
Object	execute(String line)	Executes a command, script, or evaluates a script engine statement.
Collection<String>	getPipeNames()	Returns the names of all pipes defined in this system registry.
SystemRegistryImpl	groupCommandsInHelp(boolean commandGroups)
boolean	hasCommand(String command)	Returns whether a command with the specified name is known to this registry.
void	initialize(File script)	Initializes the console engine environment by executing a console script.
Object	invoke(String command, Object... args)	Executes a command with the specified arguments.
boolean	isCommandAlias(String command)	Checks if an alias is a known command alias.
boolean	isCommandOrScript(String command)	Checks if a command or script is known to this registry.
boolean	isCommandOrScript(org.jline.reader.ParsedLine line)	Checks if a parsed line contains a command or script that is known to this registry.
void	register(String command, CommandRegistry subcommandRegistry)	Register subcommand registry
void	rename(SystemRegistryImpl.Pipe pipe, String name)
void	renameLocal(String command, String newName)
void	setCommandRegistries(CommandRegistry... commandRegistries)	Sets the command registries to be used by this system registry.
void	setConsoleOption(String name, Object value)	Sets the value of a console option.
void	setGroupCommandsInHelp(boolean commandGroups)
void	setScriptDescription(Function<CmdLine,CmdDesc> scriptDescription)
org.jline.terminal.Terminal	terminal()	Returns the terminal associated with this system registry.
void	trace(boolean stack, Throwable exception)	Prints an exception on the terminal with control over stack trace display.
void	trace(Throwable exception)	Prints an exception on the terminal.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jline.console.CommandRegistry

invoke, name

Field Details

parser

protected final org.jline.reader.Parser parser

configPath

protected final org.jline.builtins.ConfigurationPath configPath

workDir

protected final Supplier<Path> workDir

Constructor Details

SystemRegistryImpl

public SystemRegistryImpl(org.jline.reader.Parser parser,
 org.jline.terminal.Terminal terminal,
 Supplier<Path> workDir,
 org.jline.builtins.ConfigurationPath configPath)

Method Details

rename

public void rename(SystemRegistryImpl.Pipe pipe,
 String name)

renameLocal

public void renameLocal(String command,
 String newName)

getPipeNames

public Collection<String> getPipeNames()

Description copied from interface: SystemRegistry

Returns the names of all pipes defined in this system registry.

This method retrieves the names of all pipes that have been defined in this system registry. Pipes are used to connect the output of one command to the input of another.

Specified by:

getPipeNames in interface SystemRegistry

Returns:

a collection of pipe names defined in this system registry

setCommandRegistries

public void setCommandRegistries(CommandRegistry... commandRegistries)

Description copied from interface: SystemRegistry

Sets the command registries to be used by this system registry.

This method configures the command registries that will be aggregated by this system registry. Commands from all of these registries will be available for execution through this system registry.

Specified by:

setCommandRegistries in interface SystemRegistry

Parameters:

commandRegistries - the command registries to be used by the application

initialize

public void initialize(File script)

Description copied from interface: SystemRegistry

Initializes the console engine environment by executing a console script.

This method executes the specified script to initialize the console engine environment. The script can set up variables, aliases, and other configuration needed for the console application.

Specified by:

initialize in interface SystemRegistry

Parameters:

script - the initialization script to execute

commandNames

public Set<String> commandNames()

Description copied from interface: CommandRegistry

Returns the command names known by this registry.

Specified by:

commandNames in interface CommandRegistry

Returns:

the set of known command names, excluding aliases

commandAliases

public Map<String,String> commandAliases()

Description copied from interface: CommandRegistry

Returns a map of alias-to-command names known by this registry.

Specified by:

commandAliases in interface CommandRegistry

Returns:

a map with alias keys and command name values

consoleOption

public Object consoleOption(String name)

Description copied from interface: SystemRegistry

Returns the value of a console option.

This method retrieves the value of the console option with the specified name. Console options are used to configure the behavior of the console and its components.

Specified by:

consoleOption in interface org.jline.builtins.ConsoleOptionGetter

Specified by:

consoleOption in interface SystemRegistry

Parameters:

name - the name of the option to retrieve

Returns:

the value of the option, or null if the option doesn't exist

consoleOption

public <T> T consoleOption(String name,
 T defVal)

Description copied from interface: SystemRegistry

Returns the value of a console option with a default value if the option doesn't exist.

This method retrieves the value of the console option with the specified name, returning a default value if the option doesn't exist. Console options are used to configure the behavior of the console and its components.

Specified by:

consoleOption in interface org.jline.builtins.ConsoleOptionGetter

Specified by:

consoleOption in interface SystemRegistry

Type Parameters:

T - the type of the option value

Parameters:

name - the name of the option to retrieve

defVal - the default value to return if the option doesn't exist

Returns:

the value of the option, or the default value if the option doesn't exist

setConsoleOption

public void setConsoleOption(String name,
 Object value)

Description copied from interface: SystemRegistry

Sets the value of a console option.

This method sets the value of the console option with the specified name. Console options are used to configure the behavior of the console and its components.

Specified by:

setConsoleOption in interface SystemRegistry

Parameters:

name - the name of the option to set

value - the value to assign to the option

register

public void register(String command,
 CommandRegistry subcommandRegistry)

Register subcommand registry

Specified by:

register in interface SystemRegistry

Parameters:

command - main command

subcommandRegistry - subcommand registry

commandInfo

public List<String> commandInfo(String command)

Description copied from interface: CommandRegistry

Returns a short info about command known by this registry.

Specified by:

commandInfo in interface CommandRegistry

Parameters:

command - the command name

Returns:

a short info about command

hasCommand

public boolean hasCommand(String command)

Description copied from interface: CommandRegistry

Returns whether a command with the specified name is known to this registry.

Specified by:

hasCommand in interface CommandRegistry

Parameters:

command - the command name to test

Returns:

true if the specified command is registered

setGroupCommandsInHelp

public void setGroupCommandsInHelp(boolean commandGroups)

groupCommandsInHelp

public SystemRegistryImpl groupCommandsInHelp(boolean commandGroups)

isCommandOrScript

public boolean isCommandOrScript(org.jline.reader.ParsedLine line)

Description copied from interface: SystemRegistry

Checks if a parsed line contains a command or script that is known to this registry.

This method determines whether the specified parsed command line contains a command or script that is known to this registry. This can be used to determine whether the line can be executed by this registry.

Specified by:

isCommandOrScript in interface SystemRegistry

Parameters:

line - the parsed command line to test

Returns:

true if the specified line contains a command or script that is known to this registry, false otherwise

isCommandOrScript

public boolean isCommandOrScript(String command)

Description copied from interface: SystemRegistry

Checks if a command or script is known to this registry.

This method determines whether the specified command or script is known to this registry. This can be used to determine whether the command or script can be executed by this registry.

Specified by:

isCommandOrScript in interface SystemRegistry

Parameters:

command - the command or script name to test

Returns:

true if the specified command or script is known to this registry, false otherwise

addCompleter

public void addCompleter(org.jline.reader.Completer completer)

compileCompleters

public org.jline.reader.impl.completer.SystemCompleter compileCompleters()

Description copied from interface: CommandRegistry

Returns a SystemCompleter that can provide detailed completion information for all registered commands.

Specified by:

compileCompleters in interface CommandRegistry

Returns:

a SystemCompleter that can provide command completion for all registered commands

completer

public org.jline.reader.Completer completer()

Description copied from interface: SystemRegistry

Returns a command completer that includes console variable and script completion.

This method creates a completer that can provide completion for commands, console variables, and scripts. The completer can be used for tab completion in the console.

Specified by:

completer in interface SystemRegistry

Returns:

a completer for commands, console variables, and scripts

commandDescription

public CmdDesc commandDescription(List<String> args)

Description copied from interface: CommandRegistry

Returns a command description for use in the JLine Widgets framework. Default method must be overridden to return sub command descriptions.

Specified by:

commandDescription in interface CommandRegistry

Parameters:

args - command (args[0]) and its arguments

Returns:

command description for JLine TailTipWidgets to be displayed in the terminal status bar.

setScriptDescription

public void setScriptDescription(Function<CmdLine,CmdDesc> scriptDescription)

commandDescription

public CmdDesc commandDescription(CmdLine line)

Description copied from interface: SystemRegistry

Returns a description for a command, method, or syntax for use in the JLine Widgets framework.

This method generates a description for the specified command line, which can be displayed in the terminal status bar by JLine TailTipWidgets. The description includes information about the command's arguments, options, and usage.

Specified by:

commandDescription in interface SystemRegistry

Parameters:

line - the command line whose description to return

Returns:

a command description for JLine TailTipWidgets to be displayed in the terminal status bar

invoke

public Object invoke(String command,
 Object... args)
              throws Exception

Description copied from interface: SystemRegistry

Executes a command with the specified arguments.

This method executes the specified command with the specified arguments. The command is looked up in the command registries associated with this system registry.

Specified by:

invoke in interface SystemRegistry

Parameters:

command - the command to be executed

args - the arguments to pass to the command

Returns:

the result of executing the command

Throws:

Exception - if an error occurs during execution

terminal

public org.jline.terminal.Terminal terminal()

Description copied from interface: SystemRegistry

Returns the terminal associated with this system registry.

This method retrieves the terminal that is used by this system registry for input and output operations.

Specified by:

terminal in interface SystemRegistry

Returns:

the terminal associated with this system registry

isCommandAlias

public boolean isCommandAlias(String command)

Description copied from interface: SystemRegistry

Checks if an alias is a known command alias.

This method determines whether the specified alias is a known command alias. Command aliases are alternative names for commands that can be used to invoke them.

Specified by:

isCommandAlias in interface SystemRegistry

Parameters:

command - the alias to test

Returns:

true if the specified alias is a known command alias, false otherwise

execute

public Object execute(String line)
               throws Exception

Description copied from interface: SystemRegistry

Executes a command, script, or evaluates a script engine statement.

This method parses and executes the specified command line. If the line contains a known command, it will be executed. If it contains a script name, the script will be executed. Otherwise, the line will be evaluated as a script engine statement.

Specified by:

execute in interface SystemRegistry

Parameters:

line - the command line to be executed

Returns:

the result of executing the command line

Throws:

Exception - if an error occurs during execution

cleanUp

public void cleanUp()

Description copied from interface: SystemRegistry

Deletes temporary console variables and resets output streams.

This method cleans up temporary console variables and resets output streams to their default state. It should be called after command execution to ensure that temporary variables and redirected output streams don't affect subsequent commands.

Specified by:

cleanUp in interface SystemRegistry

trace

public void trace(Throwable exception)

Description copied from interface: SystemRegistry

Prints an exception on the terminal.

This method prints the specified exception on the terminal, including its message and stack trace. This is a convenience method that calls SystemRegistry.trace(boolean, Throwable) with stack=true.

Specified by:

trace in interface SystemRegistry

Parameters:

exception - the exception to print on the terminal

trace

public void trace(boolean stack,
 Throwable exception)

Description copied from interface: SystemRegistry

Prints an exception on the terminal with control over stack trace display.

This method prints the specified exception on the terminal. If stack is true, the full stack trace will be printed. Otherwise, only the exception message will be printed.

Specified by:

trace in interface SystemRegistry

Parameters:

stack - whether to print the full stack trace (true) or just the message (false)

exception - the exception to be printed

close

public void close()

Description copied from interface: SystemRegistry

Orderly closes this system registry.

This method performs an orderly shutdown of this system registry, releasing any resources it holds and performing any necessary cleanup operations. It should be called when the system registry is no longer needed.

Specified by:

close in interface SystemRegistry

consoleEngine

public ConsoleEngine consoleEngine()