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<?php
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/*
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* This file is part of Psy Shell.
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*
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* (c) 2012-2023 Justin Hileman
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Psy\Command;
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use Psy\Context;
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use Psy\ContextAware;
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use Psy\Input\FilterOptions;
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use Psy\Output\ShellOutput;
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use Symfony\Component\Console\Input\InputArgument;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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/**
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* Show the last uncaught exception.
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*/
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class WtfCommand extends TraceCommand implements ContextAware
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{
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/**
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* Context instance (for ContextAware interface).
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*
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* @var Context
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*/
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protected $context;
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/**
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* ContextAware interface.
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*
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* @param Context $context
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*/
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public function setContext(Context $context)
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{
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$this->context = $context;
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}
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/**
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* {@inheritdoc}
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*/
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protected function configure()
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{
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list($grep, $insensitive, $invert) = FilterOptions::getOptions();
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$this
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->setName('wtf')
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->setAliases(['last-exception', 'wtf?'])
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->setDefinition([
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new InputArgument('incredulity', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Number of lines to show.'),
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new InputOption('all', 'a', InputOption::VALUE_NONE, 'Show entire backtrace.'),
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$grep,
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$insensitive,
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$invert,
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])
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->setDescription('Show the backtrace of the most recent exception.')
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->setHelp(
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<<<'HELP'
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Shows a few lines of the backtrace of the most recent exception.
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If you want to see more lines, add more question marks or exclamation marks:
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e.g.
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<return>>>> wtf ?</return>
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<return>>>> wtf ?!???!?!?</return>
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To see the entire backtrace, pass the -a/--all flag:
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e.g.
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<return>>>> wtf -a</return>
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HELP
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);
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}
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/**
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* {@inheritdoc}
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*
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* @return int 0 if everything went fine, or an exit code
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*/
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protected function execute(InputInterface $input, OutputInterface $output)
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{
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$this->filter->bind($input);
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$incredulity = \implode('', $input->getArgument('incredulity'));
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if (\strlen(\preg_replace('/[\\?!]/', '', $incredulity))) {
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throw new \InvalidArgumentException('Incredulity must include only "?" and "!"');
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}
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$exception = $this->context->getLastException();
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$count = $input->getOption('all') ? \PHP_INT_MAX : \max(3, \pow(2, \strlen($incredulity) + 1));
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$shell = $this->getApplication();
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if ($output instanceof ShellOutput) {
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$output->startPaging();
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}
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do {
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$traceCount = \count($exception->getTrace());
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$showLines = $count;
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// Show the whole trace if we'd only be hiding a few lines
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if ($traceCount < \max($count * 1.2, $count + 2)) {
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$showLines = \PHP_INT_MAX;
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}
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$trace = $this->getBacktrace($exception, $showLines);
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$moreLines = $traceCount - \count($trace);
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$output->writeln($shell->formatException($exception));
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$output->writeln('--');
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$output->write($trace, true, ShellOutput::NUMBER_LINES);
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$output->writeln('');
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if ($moreLines > 0) {
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$output->writeln(\sprintf(
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'<aside>Use <return>wtf -a</return> to see %d more lines</aside>',
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$moreLines
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));
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$output->writeln('');
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}
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} while ($exception = $exception->getPrevious());
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if ($output instanceof ShellOutput) {
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$output->stopPaging();
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}
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return 0;
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}
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}
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