138 lines
4.2 KiB
PHP
138 lines
4.2 KiB
PHP
<?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) 2012-2014 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\Output\ShellOutput;
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use Symfony\Component\Console\Formatter\OutputFormatter;
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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 current stack trace.
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*/
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class TraceCommand extends Command
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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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$this
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->setName('trace')
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->setDefinition(array(
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new InputOption('include-psy', 'p', InputOption::VALUE_NONE, 'Include Psy in the call stack.'),
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new InputOption('num', 'n', InputOption::VALUE_REQUIRED, 'Only include NUM lines.'),
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))
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->setDescription('Show the current call stack.')
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->setHelp(
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<<<HELP
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Show the current call stack.
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Optionally, include PsySH in the call stack by passing the <info>--include-psy</info> option.
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e.g.
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<return>> trace -n10</return>
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<return>> trace --include-psy</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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protected function execute(InputInterface $input, OutputInterface $output)
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{
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$trace = $this->getBacktrace(new \Exception(), $input->getOption('num'), $input->getOption('include-psy'));
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$output->page($trace, ShellOutput::NUMBER_LINES | ShellOutput::OUTPUT_RAW);
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}
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/**
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* Get a backtrace for an exception.
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*
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* Optionally limit the number of rows to include with $count, and exclude
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* Psy from the trace.
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*
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* @param \Exception $e The exception with a backtrace.
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* @param int $count (default: PHP_INT_MAX)
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* @param bool $includePsy (default: true)
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*
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* @return array Formatted stacktrace lines.
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*/
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protected function getBacktrace(\Exception $e, $count = null, $includePsy = true)
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{
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if ($cwd = getcwd()) {
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$cwd = rtrim($cwd, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
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}
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if ($count === null) {
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$count = PHP_INT_MAX;
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}
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$lines = array();
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$trace = $e->getTrace();
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array_unshift($trace, array(
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'function' => '',
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'file' => $e->getFile() !== null ? $e->getFile() : 'n/a',
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'line' => $e->getLine() !== null ? $e->getLine() : 'n/a',
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'args' => array(),
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));
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if (!$includePsy) {
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for ($i = count($trace) - 1; $i >= 0; $i--) {
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$thing = isset($trace[$i]['class']) ? $trace[$i]['class'] : $trace[$i]['function'];
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if (preg_match('/\\\\?Psy\\\\/', $thing)) {
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$trace = array_slice($trace, $i + 1);
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break;
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}
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}
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}
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for ($i = 0, $count = min($count, count($trace)); $i < $count; $i++) {
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$class = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
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$type = isset($trace[$i]['type']) ? $trace[$i]['type'] : '';
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$function = $trace[$i]['function'];
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$file = isset($trace[$i]['file']) ? $this->replaceCwd($cwd, $trace[$i]['file']) : 'n/a';
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$line = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a';
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$lines[] = sprintf(
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' %s%s%s() at <info>%s:%s</info>',
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OutputFormatter::escape($class),
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OutputFormatter::escape($type),
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OutputFormatter::escape($function),
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OutputFormatter::escape($file),
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OutputFormatter::escape($line)
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);
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}
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return $lines;
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}
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/**
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* Replace the given directory from the start of a filepath.
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*
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* @param string $cwd
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* @param string $file
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*
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* @return string
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*/
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private function replaceCwd($cwd, $file)
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{
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if ($cwd === false) {
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return $file;
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} else {
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return preg_replace('/^' . preg_quote($cwd, '/') . '/', '', $file);
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}
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}
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}
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