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Added getInput() method for basic async input

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This commit is contained in:
Chris 2017-01-25 21:49:26 +01:00
parent c7b1a637c2
commit cee82fc740
2 changed files with 69 additions and 1 deletions
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31
examples/input.php Normal file
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@ -0,0 +1,31 @@
<?php
/*
* This example demonstrates how to use events to catch commands that
* have not been handled by any context or builtin.
*
*/
require_once __DIR__."/../vendor/autoload.php";
use NoccyLabs\Shell\Shell;
use NoccyLabs\Shell\Style;
use NoccyLabs\Shell\Context;
$myShell = new Shell();
// Set the initial prompt, not really needed.
$myShell->setPrompt("test>");
// Create an anonymous context and add a command
$ctx = $myShell->createContext("root");
$ctx->addCommand("hello", function () use ($myShell) {
$myShell->getInput("What is your name?", function ($name) use ($myShell) {
echo "Hello, {$name}\n";
$myShell->getInput("Who is your daddy and what does he do?", function ($daddy) {
echo "{$daddy}? Oookay...\n";
});
});
});
// Run the shell
$myShell->run();

37
lib/Shell.php
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@ -54,6 +54,18 @@ class Shell
* @var Style The style applied to the input text
*/
protected $input_style = null;
/**
* @var callable The callback to pass the input on to
*/
protected $input_callback = null;
/**
* @var string Question prompt for getInput()
*/
protected $input_prompt = null;
/**
* @var string The prompt before changing to $input_prompt
*/
protected $input_last_prompt = null;
/**
* Constructor
@ -532,6 +544,31 @@ class Shell
return $event;
}
public function getInput($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);
}
/**
* Stop the shell; calling this method will cause the main run() to return.
*