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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2022 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Command;
use Psy\Command\ListCommand\ClassConstantEnumerator;
use Psy\Command\ListCommand\ClassEnumerator;
use Psy\Command\ListCommand\ConstantEnumerator;
use Psy\Command\ListCommand\FunctionEnumerator;
use Psy\Command\ListCommand\GlobalVariableEnumerator;
use Psy\Command\ListCommand\MethodEnumerator;
use Psy\Command\ListCommand\PropertyEnumerator;
use Psy\Command\ListCommand\VariableEnumerator;
use Psy\Exception\RuntimeException;
use Psy\Input\CodeArgument;
use Psy\Input\FilterOptions;
use Psy\Output\ShellOutput;
use Psy\VarDumper\Presenter;
use Psy\VarDumper\PresenterAware;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\TableHelper;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
/**
* List available local variables, object properties, etc.
*/
class ListCommand extends ReflectingCommand implements PresenterAware
{
protected $presenter;
protected $enumerators;
/**
* PresenterAware interface.
*
* @param Presenter $presenter
*/
public function setPresenter(Presenter $presenter)
{
$this->presenter = $presenter;
}
/**
* {@inheritdoc}
*/
protected function configure()
{
list($grep, $insensitive, $invert) = FilterOptions::getOptions();
$this
->setName('ls')
->setAliases(['dir'])
->setDefinition([
new CodeArgument('target', CodeArgument::OPTIONAL, 'A target class or object to list.'),
new InputOption('vars', '', InputOption::VALUE_NONE, 'Display variables.'),
new InputOption('constants', 'c', InputOption::VALUE_NONE, 'Display defined constants.'),
new InputOption('functions', 'f', InputOption::VALUE_NONE, 'Display defined functions.'),
new InputOption('classes', 'k', InputOption::VALUE_NONE, 'Display declared classes.'),
new InputOption('interfaces', 'I', InputOption::VALUE_NONE, 'Display declared interfaces.'),
new InputOption('traits', 't', InputOption::VALUE_NONE, 'Display declared traits.'),
new InputOption('no-inherit', '', InputOption::VALUE_NONE, 'Exclude inherited methods, properties and constants.'),
new InputOption('properties', 'p', InputOption::VALUE_NONE, 'Display class or object properties (public properties by default).'),
new InputOption('methods', 'm', InputOption::VALUE_NONE, 'Display class or object methods (public methods by default).'),
$grep,
$insensitive,
$invert,
new InputOption('globals', 'g', InputOption::VALUE_NONE, 'Include global variables.'),
new InputOption('internal', 'n', InputOption::VALUE_NONE, 'Limit to internal functions and classes.'),
new InputOption('user', 'u', InputOption::VALUE_NONE, 'Limit to user-defined constants, functions and classes.'),
new InputOption('category', 'C', InputOption::VALUE_REQUIRED, 'Limit to constants in a specific category (e.g. "date").'),
new InputOption('all', 'a', InputOption::VALUE_NONE, 'Include private and protected methods and properties.'),
new InputOption('long', 'l', InputOption::VALUE_NONE, 'List in long format: includes class names and method signatures.'),
])
->setDescription('List local, instance or class variables, methods and constants.')
->setHelp(
<<<'HELP'
List variables, constants, classes, interfaces, traits, functions, methods,
and properties.
Called without options, this will return a list of variables currently in scope.
If a target object is provided, list properties, constants and methods of that
target. If a class, interface or trait name is passed instead, list constants
and methods on that class.
e.g.
<return>>>> ls</return>
<return>>>> ls $foo</return>
<return>>>> ls -k --grep mongo -i</return>
<return>>>> ls -al ReflectionClass</return>
<return>>>> ls --constants --category date</return>
<return>>>> ls -l --functions --grep /^array_.*/</return>
<return>>>> ls -l --properties new DateTime()</return>
HELP
);
}
/**
* {@inheritdoc}
*
* @return int 0 if everything went fine, or an exit code
*/
protected function execute(InputInterface $input, OutputInterface $output)
{
$this->validateInput($input);
$this->initEnumerators();
$method = $input->getOption('long') ? 'writeLong' : 'write';
if ($target = $input->getArgument('target')) {
list($target, $reflector) = $this->getTargetAndReflector($target);
} else {
$reflector = null;
}
// @todo something cleaner than this :-/
if ($output instanceof ShellOutput && $input->getOption('long')) {
$output->startPaging();
}
foreach ($this->enumerators as $enumerator) {
$this->$method($output, $enumerator->enumerate($input, $reflector, $target));
}
if ($output instanceof ShellOutput && $input->getOption('long')) {
$output->stopPaging();
}
// Set some magic local variables
if ($reflector !== null) {
$this->setCommandScopeVariables($reflector);
}
return 0;
}
/**
* Initialize Enumerators.
*/
protected function initEnumerators()
{
if (!isset($this->enumerators)) {
$mgr = $this->presenter;
$this->enumerators = [
new ClassConstantEnumerator($mgr),
new ClassEnumerator($mgr),
new ConstantEnumerator($mgr),
new FunctionEnumerator($mgr),
new GlobalVariableEnumerator($mgr),
new PropertyEnumerator($mgr),
new MethodEnumerator($mgr),
new VariableEnumerator($mgr, $this->context),
];
}
}
/**
* Write the list items to $output.
*
* @param OutputInterface $output
* @param array $result List of enumerated items
*/
protected function write(OutputInterface $output, array $result)
{
if (\count($result) === 0) {
return;
}
foreach ($result as $label => $items) {
$names = \array_map([$this, 'formatItemName'], $items);
$output->writeln(\sprintf('<strong>%s</strong>: %s', $label, \implode(', ', $names)));
}
}
/**
* Write the list items to $output.
*
* Items are listed one per line, and include the item signature.
*
* @param OutputInterface $output
* @param array $result List of enumerated items
*/
protected function writeLong(OutputInterface $output, array $result)
{
if (\count($result) === 0) {
return;
}
$table = $this->getTable($output);
foreach ($result as $label => $items) {
$output->writeln('');
$output->writeln(\sprintf('<strong>%s:</strong>', $label));
$table->setRows([]);
foreach ($items as $item) {
$table->addRow([$this->formatItemName($item), $item['value']]);
}
if ($table instanceof TableHelper) {
$table->render($output);
} else {
$table->render();
}
}
}
/**
* Format an item name given its visibility.
*
* @param array $item
*
* @return string
*/
private function formatItemName(array $item): string
{
return \sprintf('<%s>%s</%s>', $item['style'], OutputFormatter::escape($item['name']), $item['style']);
}
/**
* Validate that input options make sense, provide defaults when called without options.
*
* @throws RuntimeException if options are inconsistent
*
* @param InputInterface $input
*/
private function validateInput(InputInterface $input)
{
if (!$input->getArgument('target')) {
// if no target is passed, there can be no properties or methods
foreach (['properties', 'methods', 'no-inherit'] as $option) {
if ($input->getOption($option)) {
throw new RuntimeException('--'.$option.' does not make sense without a specified target');
}
}
foreach (['globals', 'vars', 'constants', 'functions', 'classes', 'interfaces', 'traits'] as $option) {
if ($input->getOption($option)) {
return;
}
}
// default to --vars if no other options are passed
$input->setOption('vars', true);
} else {
// if a target is passed, classes, functions, etc don't make sense
foreach (['vars', 'globals'] as $option) {
if ($input->getOption($option)) {
throw new RuntimeException('--'.$option.' does not make sense with a specified target');
}
}
// @todo ensure that 'functions', 'classes', 'interfaces', 'traits' only accept namespace target?
foreach (['constants', 'properties', 'methods', 'functions', 'classes', 'interfaces', 'traits'] as $option) {
if ($input->getOption($option)) {
return;
}
}
// default to --constants --properties --methods if no other options are passed
$input->setOption('constants', true);
$input->setOption('properties', true);
$input->setOption('methods', true);
}
}
}
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