2016-04-13 01:19:22 +00:00
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<?php
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namespace NoccyLabs\Shell;
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use NoccyLabs\Shell\LineRead;
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2017-01-23 22:28:12 +00:00
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use NoccyLabs\TinyEvent\EventEmitterTrait;
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use NoccyLabs\TinyEvent\Event;
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2016-04-13 01:19:22 +00:00
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2016-11-01 14:12:11 +00:00
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class Shell
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2016-04-13 01:19:22 +00:00
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{
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2017-01-23 22:28:12 +00:00
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use EventEmitterTrait;
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const EVT_UPDATE_PROMPT = "shell.prompt"; // called to update the prompt
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const EVT_BEFORE_COMMAND = "shell.command.before"; // before a command is executed
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const EVT_AFTER_COMMAND = "shell.command.after"; // after a command is executed
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2017-01-24 13:42:43 +00:00
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const EVT_BAD_COMMAND = "shell.command.bad"; // no such command found
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2017-01-23 22:28:12 +00:00
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const EVT_CONTEXT_CHANGED = "shell.context"; // a new context is activated
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const EVT_SHELL_START = "shell.start"; // the shell is about to start
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const EVT_SHELL_STOP = "shell.stop"; // the shell is about to exit
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const EVT_SHELL_ABORT = "shell.abort"; // the shell was aborted (ctrl-c)
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const EVT_SHELL_ESCAPE = "shell.escape"; // escape key pressed
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2017-01-24 13:42:43 +00:00
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const EVT_TASK_CREATED = "task.created"; // a task was created
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const EVT_TASK_DESTROYED = "task.destryed"; // a task was removed or invalidated
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2016-04-29 00:25:57 +00:00
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2017-01-23 22:28:12 +00:00
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/**
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* @var LineRead The lineread instance
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*/
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2016-11-01 14:12:11 +00:00
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protected $lineReader = null;
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2017-01-23 22:28:12 +00:00
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/**
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* @var Context The current context
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*/
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2016-11-01 14:12:11 +00:00
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protected $context = null;
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2017-01-23 22:28:12 +00:00
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/**
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* @var Context[] The stack of parent contexts
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*/
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2016-11-01 14:12:11 +00:00
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protected $contextStack = [];
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2017-01-23 23:49:13 +00:00
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/**
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* @var object[] Created timers
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2017-01-24 13:42:43 +00:00
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*/
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2016-11-02 13:22:53 +00:00
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protected $timers = [];
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2017-01-24 13:42:43 +00:00
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/**
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* @var TaskInterface[] Created tasks
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2017-01-23 23:49:13 +00:00
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*/
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2017-01-23 22:28:12 +00:00
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protected $tasks = [];
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2017-01-23 23:49:13 +00:00
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/**
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* @var string The prompt string
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*/
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2016-11-12 15:37:51 +00:00
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protected $prompt = ">";
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2017-01-23 23:49:13 +00:00
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/**
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* @var Style The style applied to the prompt
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*/
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2017-01-23 22:28:12 +00:00
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protected $prompt_style = null;
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2017-01-23 23:49:13 +00:00
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/**
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* @var Style The style applied to the input text
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*/
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2017-01-23 22:28:12 +00:00
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protected $input_style = null;
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2017-01-25 20:49:26 +00:00
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/**
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* @var callable The callback to pass the input on to
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*/
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protected $input_callback = null;
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/**
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* @var string Question prompt for getInput()
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*/
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protected $input_prompt = null;
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/**
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* @var string The prompt before changing to $input_prompt
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*/
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protected $input_last_prompt = null;
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2016-11-01 14:12:11 +00:00
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2017-01-23 23:49:13 +00:00
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/**
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* Constructor
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*
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*/
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2017-01-23 22:28:12 +00:00
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public function __construct()
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{
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2017-01-23 23:49:13 +00:00
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$t = $this;
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register_shutdown_function(function () use (&$t) {
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if ($t) unset($t);
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});
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}
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/**
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* Destructor
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*
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*/
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public function __destruct()
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{
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if ($this->lineReader) {
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$this->lineReader = null;
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}
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2016-11-01 14:12:11 +00:00
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}
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2016-04-13 01:19:22 +00:00
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2017-01-28 12:00:26 +00:00
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/**
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* Return the current context
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*
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* @return Context The current context
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*/
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public function getContext()
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{
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return $this->context;
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Push a new primary context, saving the previous contexts on a stack.
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*
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* @param Context $context
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*/
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public function pushContext(Context $context)
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2016-04-13 01:19:22 +00:00
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{
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2016-11-01 14:12:11 +00:00
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if ($this->context) {
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2016-11-02 12:53:56 +00:00
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$context->setParent($this->context);
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2016-11-01 14:12:11 +00:00
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array_unshift($this->contextStack, $this->context);
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2016-04-25 18:47:30 +00:00
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}
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2016-11-02 12:53:56 +00:00
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$context->setShell($this);
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2016-11-01 14:12:11 +00:00
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$this->context = $context;
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2017-01-23 22:28:12 +00:00
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$this->dispatchEvent(self::EVT_CONTEXT_CHANGED);
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2016-04-13 01:19:22 +00:00
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Pop the current context.
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*
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* @return Context
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*/
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public function popContext()
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2016-04-13 01:19:22 +00:00
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{
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2016-11-01 14:12:11 +00:00
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$previous = $this->context;
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if (count($this->contextStack)>0) {
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$this->context = array_shift($this->contextStack);
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} else {
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$this->context = null;
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2016-04-25 18:47:30 +00:00
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}
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2017-01-23 22:28:12 +00:00
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$this->dispatchEvent(self::EVT_CONTEXT_CHANGED);
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2016-11-01 14:12:11 +00:00
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return $previous;
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}
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2016-04-25 18:47:30 +00:00
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2016-11-01 14:12:11 +00:00
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public function getContextPath($separator=":")
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{
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2016-11-01 14:32:53 +00:00
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// Return null if we don't have a current context
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if (!$this->context)
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return null;
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// Assemble the contexts to walk
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2016-11-01 14:12:11 +00:00
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$stack = [ $this->context->getName() ];
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foreach ($this->contextStack as $context) {
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$stack[] = $context->getName();
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2016-04-13 01:19:22 +00:00
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}
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2016-11-01 14:32:53 +00:00
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// Reverse the order to make it more logical
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2016-11-01 14:12:11 +00:00
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$stack = array_reverse($stack);
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return join($separator,$stack);
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2016-04-13 01:19:22 +00:00
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}
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2016-11-01 14:12:11 +00:00
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/**
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2017-01-23 22:28:12 +00:00
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* Create a new empty context and push it on the stack.
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2016-11-01 14:12:11 +00:00
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*
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2017-01-23 22:28:12 +00:00
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* @param string $name The name of the context to create
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* @return Context The created context
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2016-11-01 14:12:11 +00:00
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*/
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2017-01-23 22:28:12 +00:00
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public function createContext($name)
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2016-11-01 14:12:11 +00:00
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{
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2017-01-23 22:28:12 +00:00
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$context = new Context($name);
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$this->pushContext($context);
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return $context;
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2016-04-13 01:19:22 +00:00
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Add a callback to be called at a regular interval during the update phase.
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* Adding timers with a low interval (less than 200 i.e. 0.2s) may have an
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* impact on performance.
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*
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* @param int $interval Interval in ms
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* @param callable $handler The handler
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* @param array $userdata Data to be passed to the handler
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* @return Timer
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*/
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public function addTimer($interval, callable $handler, array $userdata=[])
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2016-04-13 01:19:22 +00:00
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{
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2016-11-02 13:22:53 +00:00
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$timer = new class($interval, $handler, $userdata) {
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private $next;
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private $interval;
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private $handler;
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private $userdata;
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public function __construct($interval, callable $handler, array $userdata) {
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$this->interval = $interval / 1000;
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2017-01-22 22:22:13 +00:00
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$this->next = microtime(true) + $this->interval;
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2016-11-02 13:22:53 +00:00
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$this->handler = $handler;
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$this->userdata = $userdata;
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}
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public function update() {
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$now = microtime(true);
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if ($now > $this->next) {
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$this->next = $now + $this->interval;
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call_user_func($this->handler, $this->userdata);
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}
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}
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};
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$this->timers[] = $timer;
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return $timer;
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2016-04-13 01:19:22 +00:00
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Remove a created timer.
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*
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* @param Timer $timer
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*/
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2017-01-22 22:22:13 +00:00
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public function removeTimer($timer)
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2016-04-13 01:19:22 +00:00
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{
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2017-01-22 22:22:13 +00:00
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$this->timers = array_filter($this->timers, function ($v) use ($timer) {
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return ($v !== $timer);
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});
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2016-04-13 01:19:22 +00:00
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}
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2017-01-24 13:42:43 +00:00
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/**
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* Add a task to be update():d in the main loop.
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*
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* @param TaskInterface $task The task to add
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*/
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public function addTask(TaskInterface $task)
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{
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if ($this->dispatchEvent(self::EVT_TASK_CREATED, [
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'task' => $task
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])->isPropagationStopped()) {
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return;
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}
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$this->tasks[] = $task;
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}
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/**
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* Remove a previously added task. This can also be done by the task returning
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* false from its isValid() method.
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*
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* @param TaskInterface $task The task to remove
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*/
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public function removeTask(TaskInterface $task)
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{
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$this->tasks = array_filter($this->tasks, function ($item) use ($task) {
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return ($item != $task);
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});
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$this->dispatchEvent(self::EVT_TASK_DESTROYED, [
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'task' => $task
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]);
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}
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2017-01-23 23:49:13 +00:00
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/**
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* Set the prompt text
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*
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* @param string $text The text
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*/
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2016-11-01 14:12:11 +00:00
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public function setPrompt($text)
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2016-04-29 13:49:10 +00:00
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{
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2016-11-12 15:37:51 +00:00
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$this->prompt = $text;
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2017-01-25 20:49:26 +00:00
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2016-11-12 15:37:51 +00:00
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if ($this->lineReader) {
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$this->lineReader->setPromptText($text);
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2016-11-01 14:12:11 +00:00
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}
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2016-04-29 13:49:10 +00:00
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}
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2017-01-23 23:49:13 +00:00
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/**
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* Set the prompt style
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*
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* @param Style $style The style to apply to the prompt
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*/
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2017-01-23 22:28:12 +00:00
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public function setPromptStyle(Style $style)
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{
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$this->prompt_style = $style;
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if ($this->lineReader) {
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$this->lineReader->setPromptStyle($style);
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}
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}
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2017-01-23 23:49:13 +00:00
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/**
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* Set the input style
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*
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* @param Style $style The style to apply to the text
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*/
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2017-01-23 22:28:12 +00:00
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public function setInputStyle(Style $style)
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{
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$this->input_style = $style;
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if ($this->lineReader) {
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$this->lineReader->setCommandStyle($style);
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}
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Find a command and return a closure.
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*
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* @return callable The command
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*/
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private function findCommand($command)
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2016-04-29 00:25:57 +00:00
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{
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2016-11-01 14:12:11 +00:00
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// Go over current context and walk through stack until finding command
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2016-11-02 21:49:19 +00:00
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if ($this->context->hasCommand($command)) {
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$handler = $this->context->getCommand($command);
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} else {
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foreach($this->contextStack as $context) {
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if ($context->hasCommand($command) && $context->isCommandGlobal($command)) {
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$handler = $context->getCommand($command);
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break;
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}
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2016-11-01 14:12:11 +00:00
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}
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}
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2016-11-02 21:49:19 +00:00
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// No handler...
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2016-11-01 14:12:11 +00:00
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if (empty($handler)) {
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return false;
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}
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// Return closure
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return function (...$args) use ($handler) {
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return call_user_func($handler, ...$args);
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};
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2016-04-29 00:25:57 +00:00
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}
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2016-11-01 14:12:11 +00:00
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/**
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* Execute a command with arguments.
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*
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* @param string $command The command name to execute
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2017-01-23 23:49:13 +00:00
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* @param string ...$args Arguments
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2016-11-01 14:12:11 +00:00
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* @return mixed
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* @throws Exception\BadCommandExcception
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*/
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public function executeCommand($command, ...$args)
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2016-04-29 00:25:57 +00:00
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{
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2017-01-24 13:42:43 +00:00
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if ($this->dispatchEvent(self::EVT_BEFORE_COMMAND, [
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'command' => $command,
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'args' => $args
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])->isPropagationStopped()) {
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|
|
return true;
|
|
|
|
}
|
|
|
|
|
2016-11-01 14:12:11 +00:00
|
|
|
if ($this->executeBuiltin($command, ...$args)) {
|
2017-01-24 13:42:43 +00:00
|
|
|
$this->dispatchEvent(self::EVT_AFTER_COMMAND, [
|
|
|
|
'command' => $command,
|
|
|
|
'args' => $args,
|
|
|
|
'type' => 'builtin'
|
|
|
|
]);
|
2016-11-01 14:12:11 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Call the handler if the command was found
|
|
|
|
if (($target = $this->findCommand($command))) {
|
|
|
|
$ret = $target(...$args);
|
|
|
|
if ($ret instanceof Context) {
|
|
|
|
$this->pushContext($ret);
|
|
|
|
}
|
2017-01-24 13:42:43 +00:00
|
|
|
$this->dispatchEvent(self::EVT_AFTER_COMMAND, [
|
|
|
|
'command' => $command,
|
|
|
|
'args' => $args,
|
|
|
|
'type' => 'command'
|
|
|
|
]);
|
2016-11-01 14:12:11 +00:00
|
|
|
return;
|
|
|
|
}
|
2016-11-19 13:18:53 +00:00
|
|
|
|
|
|
|
// Call 'execute' on the current context
|
|
|
|
if ($this->context->execute($command, ...$args)) {
|
2017-01-24 13:42:43 +00:00
|
|
|
$this->dispatchEvent(self::EVT_AFTER_COMMAND, [
|
|
|
|
'command' => $command,
|
|
|
|
'args' => $args,
|
|
|
|
'type' => 'execute'
|
|
|
|
]);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Fire the EVT_BAD_COMMAND event and return if the event propagation
|
|
|
|
// has been stopped.
|
|
|
|
$evt = $this->dispatchEvent(self::EVT_BAD_COMMAND, [
|
|
|
|
'command'=>$command,
|
|
|
|
'args'=>$args
|
|
|
|
]);
|
|
|
|
if ($evt->isPropagationStopped()) {
|
2016-11-19 13:18:53 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2016-11-01 14:12:11 +00:00
|
|
|
// Throw error if the command could not be found
|
|
|
|
throw new Exception\BadCommandException("Command {$command} not found");
|
|
|
|
}
|
|
|
|
|
2017-01-23 23:49:13 +00:00
|
|
|
/**
|
|
|
|
* Execute a built-in command
|
|
|
|
*
|
|
|
|
* @param string $command Command name
|
|
|
|
* @param mixed ...$args Arguments
|
|
|
|
* @return bool True if the command was handled OK
|
|
|
|
*/
|
2016-11-01 14:12:11 +00:00
|
|
|
public function executeBuiltin($command, ...$args)
|
|
|
|
{
|
|
|
|
switch ($command) {
|
|
|
|
case '.':
|
2016-11-01 15:27:23 +00:00
|
|
|
$type = basename(strtr(get_class($this->context), "\\", "/"));
|
2016-11-15 02:29:00 +00:00
|
|
|
printf("%s<%s>: %s\n", $type, $this->context->getName(), $this->context->getContextInfo());
|
2016-11-01 14:45:54 +00:00
|
|
|
$level = 0;
|
|
|
|
foreach ($this->contextStack as $context) {
|
2016-11-01 15:27:23 +00:00
|
|
|
$type = basename(strtr(get_class($context), "\\", "/"));
|
2016-11-15 02:29:00 +00:00
|
|
|
printf(" %s└─%s<%s>: %s\n", str_repeat(" ",$level++), $type, $context->getName(), $context->getContextInfo());
|
2016-11-01 14:45:54 +00:00
|
|
|
}
|
2016-11-01 14:12:11 +00:00
|
|
|
break;
|
|
|
|
case '..':
|
|
|
|
if (count($this->contextStack)>0)
|
|
|
|
$this->popContext();
|
|
|
|
break;
|
|
|
|
case 'help':
|
2016-11-01 15:10:35 +00:00
|
|
|
$help = $this->context->getCommandHelp();
|
2016-11-02 21:49:19 +00:00
|
|
|
$ghelp = [];
|
|
|
|
foreach ($this->contextStack as $context) {
|
|
|
|
$commands = $context->getCommandHelp();
|
|
|
|
foreach ($commands as $command=>$info) {
|
|
|
|
if (strpos(" ",$command)!==false) {
|
|
|
|
list ($cmd,$arg)=explode(" ",$command,2);
|
|
|
|
} else {
|
|
|
|
$cmd = $command;
|
|
|
|
}
|
|
|
|
if ($context->isCommandGlobal($cmd)) {
|
|
|
|
$ghelp[$command] = $info;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
ksort($ghelp);
|
2017-01-27 03:36:23 +00:00
|
|
|
$_ = function($command,$args,$info) {
|
2017-01-27 03:43:44 +00:00
|
|
|
printf(" \e[96m%s\e[0m \e[0;3m%s\e[0m \e[30G\e[36m%s\e[0m\n", $command, $args, $info);
|
2017-01-27 03:36:23 +00:00
|
|
|
};
|
2017-01-27 03:30:50 +00:00
|
|
|
printf("\e[1mCommands:\e[0m\n");
|
2016-11-01 15:10:35 +00:00
|
|
|
foreach ($help as $command=>$info) {
|
2017-01-27 03:30:50 +00:00
|
|
|
if (strpos($command," ")!==false) {
|
|
|
|
list($command,$args) = explode(" ",$command,2);
|
|
|
|
} else $args=null;
|
2017-01-27 03:36:23 +00:00
|
|
|
$_($command, $args,$info);
|
2016-11-02 21:49:19 +00:00
|
|
|
}
|
|
|
|
if (count($ghelp)) {
|
2017-01-27 03:43:44 +00:00
|
|
|
printf("\e[1mCommands from parent contexts:\e[0m\n");
|
2017-01-27 03:30:50 +00:00
|
|
|
if (strpos($command," ")!==false) {
|
|
|
|
list($command,$args) = explode(" ",$command,2);
|
|
|
|
} else $args=null;
|
2017-01-27 03:36:23 +00:00
|
|
|
$_($command, $args,$info);
|
2016-11-01 15:10:35 +00:00
|
|
|
}
|
2017-01-27 03:43:44 +00:00
|
|
|
printf("\e[1mGlobal commands:\e[0m\n");
|
2017-01-27 03:36:23 +00:00
|
|
|
$_("exit", null, "Leave the shell");
|
|
|
|
$_(".", null, "Show the context tree");
|
|
|
|
$_("..", null, "Discard the current context and go to parent");
|
2016-11-01 14:12:11 +00:00
|
|
|
break;
|
|
|
|
case 'exit':
|
|
|
|
$this->stop();
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Parse a string and execute the resulting command.
|
|
|
|
*
|
|
|
|
* @param string $command The string to parse
|
|
|
|
* @return mixed
|
|
|
|
*/
|
|
|
|
public function executeBuffer(string $command)
|
|
|
|
{
|
|
|
|
$args = str_getcsv($command, " ", "\"", "\\");
|
|
|
|
$command = array_shift($args);
|
|
|
|
|
|
|
|
try {
|
|
|
|
$this->executeCommand($command, ...$args);
|
|
|
|
} catch (Exception\ShellException $e) {
|
|
|
|
echo "\e[31;91;1m{$e->getMessage()}\e[0m\n";
|
|
|
|
}
|
2016-04-29 00:25:57 +00:00
|
|
|
}
|
|
|
|
|
2017-01-23 23:49:13 +00:00
|
|
|
/**
|
|
|
|
* Start the shell
|
|
|
|
*
|
|
|
|
*/
|
2016-04-25 18:47:30 +00:00
|
|
|
public function run()
|
2016-04-13 01:19:22 +00:00
|
|
|
{
|
2016-11-21 00:26:06 +00:00
|
|
|
try {
|
|
|
|
$this->lineReader = new LineRead();
|
2016-11-01 14:12:11 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
$this->lineReader->setPromptText($this->prompt);
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->lineReader->setPromptStyle($this->prompt_style?:new Style(Style::BR_GREEN));
|
|
|
|
$this->lineReader->setCommandStyle($this->input_style?:new Style(Style::GREEN));
|
2016-04-13 01:19:22 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
$this->running = true;
|
2016-04-25 18:47:30 +00:00
|
|
|
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->dispatchEvent(self::EVT_UPDATE_PROMPT);
|
|
|
|
$this->dispatchEvent(self::EVT_SHELL_START);
|
2016-11-01 14:12:11 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
while ($this->running) {
|
|
|
|
// Update the input stuff, sleep if nothing to do.
|
|
|
|
if (!($buffer = $this->lineReader->update())) {
|
|
|
|
usleep(10000);
|
|
|
|
}
|
|
|
|
// Escape is handy too...
|
|
|
|
if ($buffer == "\e") {
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->dispatchEvent(self::EVT_SHELL_ESCAPE);
|
2016-11-21 00:26:06 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
// we get a ^C on ^C, so deal with the ^C.
|
|
|
|
if ($buffer == "\x03") {
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->dispatchEvent(self::EVT_SHELL_ABORT);
|
2016-11-21 00:26:06 +00:00
|
|
|
$this->stop();
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
// Execute the buffer
|
|
|
|
ob_start();
|
|
|
|
$this->dispatchEvent("update");
|
|
|
|
foreach ($this->timers as $timer) {
|
|
|
|
$timer->update();
|
|
|
|
}
|
2017-01-24 13:42:43 +00:00
|
|
|
foreach ($this->tasks as $taskidx=>$task) {
|
2017-01-23 22:28:12 +00:00
|
|
|
$task->update();
|
2017-01-24 13:42:43 +00:00
|
|
|
if (!$task->isValid()) {
|
|
|
|
$this->dispatchEvent(self::EVT_TASK_DESTROYED, [
|
|
|
|
'task' => $task
|
|
|
|
]);
|
|
|
|
unset($this->tasks[$taskidx]);
|
|
|
|
}
|
2017-01-23 22:28:12 +00:00
|
|
|
}
|
2016-11-21 00:26:06 +00:00
|
|
|
if ($buffer) {
|
|
|
|
$this->executeBuffer($buffer);
|
|
|
|
}
|
|
|
|
$output = ob_get_contents();
|
|
|
|
ob_end_clean();
|
2016-11-01 14:12:11 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
if (trim($output)) {
|
|
|
|
$this->lineReader->erase();
|
|
|
|
echo rtrim($output)."\n";
|
2017-01-24 13:42:43 +00:00
|
|
|
if ($this->running)
|
|
|
|
$this->lineReader->redraw();
|
2016-11-21 00:26:06 +00:00
|
|
|
}
|
2016-11-01 14:12:11 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
if (!$this->context) {
|
|
|
|
$this->stop();
|
2017-01-24 13:42:43 +00:00
|
|
|
break;
|
2016-11-21 00:26:06 +00:00
|
|
|
}
|
2016-11-01 14:12:11 +00:00
|
|
|
|
2016-11-21 00:26:06 +00:00
|
|
|
if ($buffer) {
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->dispatchEvent(self::EVT_UPDATE_PROMPT);
|
2016-11-21 00:26:06 +00:00
|
|
|
}
|
2016-11-01 14:15:47 +00:00
|
|
|
}
|
2016-11-21 00:26:06 +00:00
|
|
|
|
|
|
|
} catch (\Exception $e) {
|
|
|
|
fprintf(STDERR, "\e[31;1mFatal: Unhandled exception\e[0m\n\n%s\n", $e);
|
2016-11-01 14:12:11 +00:00
|
|
|
}
|
|
|
|
|
2017-01-23 22:28:12 +00:00
|
|
|
$this->dispatchEvent(self::EVT_SHELL_STOP);
|
|
|
|
|
2016-11-01 14:12:11 +00:00
|
|
|
$this->lineReader = null;
|
2016-04-13 01:19:22 +00:00
|
|
|
|
|
|
|
}
|
2017-01-23 23:49:13 +00:00
|
|
|
/**
|
|
|
|
* Helper function to emit an event with shell instance and context included.
|
|
|
|
*
|
|
|
|
* @param string $type The event type
|
|
|
|
* @param array[] $data The userdata of the event
|
|
|
|
*/
|
2017-01-23 22:28:12 +00:00
|
|
|
private function dispatchEvent($type, array $data=[])
|
|
|
|
{
|
|
|
|
$data['shell'] = $this;
|
|
|
|
$data['context'] = $this->context;
|
|
|
|
$event = new Event($type, $data);
|
|
|
|
$this->emitEvent($type, $event);
|
2017-01-24 13:42:43 +00:00
|
|
|
return $event;
|
2017-01-23 22:28:12 +00:00
|
|
|
}
|
|
|
|
|
2017-01-25 20:49:26 +00:00
|
|
|
public function getInput($prompt, callable $callback)
|
|
|
|
{
|
|
|
|
$this->addListener(Shell::EVT_UPDATE_PROMPT, [ $this, "onInputPrompt" ], $prompt);
|
|
|
|
$this->addListener(Shell::EVT_BEFORE_COMMAND, [ $this, "onInputHandler" ], $this->prompt, $callback);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function onInputPrompt(Event $e, $prompt)
|
|
|
|
{
|
|
|
|
$this->setPrompt($prompt);
|
|
|
|
$e->stopPropagation();
|
|
|
|
$this->removeListener(Shell::EVT_UPDATE_PROMPT, [ $this, "onInputPrompt" ], $prompt);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function onInputHandler(Event $e, $last_prompt, $callback)
|
|
|
|
{
|
|
|
|
// Restore the prompt
|
|
|
|
$this->setPrompt($last_prompt);
|
|
|
|
// Remove the listeners and compose the result string
|
|
|
|
$this->removeListener(Shell::EVT_BEFORE_COMMAND, [ $this, "onInputHandler" ], $last_prompt, $callback);
|
|
|
|
$input = trim($e->command." ".join(" ",$e->args));
|
|
|
|
$e->stopPropagation();
|
|
|
|
// Call the callback
|
|
|
|
call_user_func($callback, $input);
|
|
|
|
}
|
|
|
|
|
2017-01-23 23:49:13 +00:00
|
|
|
/**
|
|
|
|
* Stop the shell; calling this method will cause the main run() to return.
|
|
|
|
*
|
|
|
|
*/
|
2016-04-13 01:19:22 +00:00
|
|
|
public function stop()
|
|
|
|
{
|
|
|
|
$this->running = false;
|
|
|
|
}
|
|
|
|
}
|