Class ShellDispatcher

Shell dispatcher handles dispatching cli commands.

Consult /bin/cake.php for how this class is used in practice.

Namespace: Cake\Console

Properties summary

  • $_aliases protected static
    array

    List of connected aliases.

  • $args public
    array

    Contains arguments parsed from the command line.

Method Summary

  • __construct() public

    Constructor

  • _bootstrap() protected

    Initializes the environment and loads the CakePHP core.

  • _createShell() protected

    Create the given shell name, and set the plugin property

  • _dispatch() protected

    Dispatch a request.

  • _handleAlias() protected

    If the input matches an alias, return the aliased shell name

  • _initEnvironment() protected

    Defines current working environment.

  • _shellExists() protected

    Check if a shell class exists for the given name.

  • addShortPluginAliases() public

    For all loaded plugins, add a short alias

  • alias() public static

    Add an alias for a shell command.

  • dispatch() public

    Dispatches a CLI request

  • findShell() public

    Get shell to use, either plugin shell or application shell

  • help() public

    Shows console help. Performs an internal dispatch to the CommandList Shell

  • resetAliases() public static

    Clear any aliases that have been set.

  • run() public static

    Run the dispatcher

  • shiftArgs() public

    Removes first argument and shifts other arguments up

  • version() public

    Prints the currently installed version of CakePHP. Performs an internal dispatch to the CommandList Shell

Method Detail

__construct() public 

__construct(array $args, bool $bootstrap)

Constructor

The execution of the script is stopped after dispatching the request with a status code of either 0 or 1 according to the result of the dispatch.

Parameters

array $args optional

the argv from PHP

bool $bootstrap optional

Should the environment be bootstrapped.

_bootstrap() protected 

_bootstrap()

Initializes the environment and loads the CakePHP core.

_createShell() protected 

_createShell(string $className, string $shortName)

Create the given shell name, and set the plugin property

Parameters

string $className

The class name to instantiate

string $shortName

The plugin-prefixed shell name

Returns

\Cake\Console\Shell

A shell instance.

_dispatch() protected 

_dispatch(array $extra)

Dispatch a request.

Parameters

array $extra optional

Extra parameters that you can manually pass to the Shell to be dispatched. Built-in extra parameter is :

  • requested : if used, will prevent the Shell welcome message to be displayed

Returns

bool|int|null

Throws

Cake\Console\Exception\MissingShellMethodException

_handleAlias() protected 

_handleAlias(string $shell)

If the input matches an alias, return the aliased shell name

Parameters

string $shell

Optionally the name of a plugin or alias

Returns

string

Shell name with plugin prefix

_initEnvironment() protected 

_initEnvironment()

Defines current working environment.

Throws

Cake\Core\Exception\Exception

_shellExists() protected 

_shellExists(string $shell)

Check if a shell class exists for the given name.

Parameters

string $shell

The shell name to look for.

Returns

string|null

Either the classname or null.

addShortPluginAliases() public 

addShortPluginAliases()

For all loaded plugins, add a short alias

This permits a plugin which implements a shell of the same name to be accessed Using the shell name alone

Returns

array

the resultant list of aliases

alias() public static 

alias(string $short, ?string $original)

Add an alias for a shell command.

Aliases allow you to call shells by alternate names. This is most useful when dealing with plugin shells that you want to have shorter names for.

If you re-use an alias the last alias set will be the one available.

Usage

Aliasing a shell named ClassName:

$this->alias('alias', 'ClassName');

Getting the original name for a given alias:

$this->alias('alias');

Parameters

string $short

The new short name for the shell.

string|null $original optional

The original full name for the shell.

Returns

string|null

The aliased class name, or null if the alias does not exist

dispatch() public 

dispatch(array $extra)

Dispatches a CLI request

Converts a shell command result into an exit code. Null/True are treated as success. All other return values are an error.

Parameters

array $extra optional

Extra parameters that you can manually pass to the Shell to be dispatched. Built-in extra parameter is :

  • requested : if used, will prevent the Shell welcome message to be displayed

Returns

int

The cli command exit code. 0 is success.

findShell() public 

findShell(string $shell)

Get shell to use, either plugin shell or application shell

All paths in the loaded shell paths are searched, handles alias dereferencing

Parameters

string $shell

Optionally the name of a plugin

Returns

\Cake\Console\Shell

A shell instance.

Throws

Cake\Console\Exception\MissingShellException
when errors are encountered.

help() public 

help()

Shows console help. Performs an internal dispatch to the CommandList Shell

resetAliases() public static 

resetAliases()

Clear any aliases that have been set.

run() public static 

run(array $argv, array $extra)

Run the dispatcher

Parameters

array $argv

The argv from PHP

array $extra optional

Extra parameters

Returns

int

The exit code of the shell process.

shiftArgs() public 

shiftArgs()

Removes first argument and shifts other arguments up

Returns

mixed

Null if there are no arguments otherwise the shifted argument

version() public 

version()

Prints the currently installed version of CakePHP. Performs an internal dispatch to the CommandList Shell

Property Detail

$_aliases protected static

List of connected aliases.

Type

array

$args public

Contains arguments parsed from the command line.

Type

array

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https://api.cakephp.org/4.0/class-Cake.Console.ShellDispatcher.html