+++ /dev/null
-<?php
-
-/*
- * This file is part of Psy Shell.
- *
- * (c) 2012-2017 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 JakubOnderka\PhpConsoleHighlighter\Highlighter;
-use Psy\Configuration;
-use Psy\ConsoleColorFactory;
-use Psy\Exception\RuntimeException;
-use Psy\Formatter\CodeFormatter;
-use Psy\Formatter\SignatureFormatter;
-use Psy\Output\ShellOutput;
-use Symfony\Component\Console\Formatter\OutputFormatter;
-use Symfony\Component\Console\Input\InputArgument;
-use Symfony\Component\Console\Input\InputInterface;
-use Symfony\Component\Console\Input\InputOption;
-use Symfony\Component\Console\Output\OutputInterface;
-
-/**
- * Show the code for an object, class, constant, method or property.
- */
-class ShowCommand extends ReflectingCommand
-{
- private $colorMode;
- private $highlighter;
- private $lastException;
- private $lastExceptionIndex;
-
- /**
- * @param null|string $colorMode (default: null)
- */
- public function __construct($colorMode = null)
- {
- $this->colorMode = $colorMode ?: Configuration::COLOR_MODE_AUTO;
-
- return parent::__construct();
- }
-
- /**
- * {@inheritdoc}
- */
- protected function configure()
- {
- $this
- ->setName('show')
- ->setDefinition(array(
- new InputArgument('value', InputArgument::OPTIONAL, 'Function, class, instance, constant, method or property to show.'),
- new InputOption('ex', null, InputOption::VALUE_OPTIONAL, 'Show last exception context. Optionally specify a stack index.', 1),
- ))
- ->setDescription('Show the code for an object, class, constant, method or property.')
- ->setHelp(
- <<<HELP
-Show the code for an object, class, constant, method or property, or the context
-of the last exception.
-
-<return>cat --ex</return> defaults to showing the lines surrounding the location of the last
-exception. Invoking it more than once travels up the exception's stack trace,
-and providing a number shows the context of the given index of the trace.
-
-e.g.
-<return>>>> show \$myObject</return>
-<return>>>> show Psy\Shell::debug</return>
-<return>>>> show --ex</return>
-<return>>>> show --ex 3</return>
-HELP
- );
- }
-
- /**
- * {@inheritdoc}
- */
- protected function execute(InputInterface $input, OutputInterface $output)
- {
- // n.b. As far as I can tell, InputInterface doesn't want to tell me
- // whether an option with an optional value was actually passed. If you
- // call `$input->getOption('ex')`, it will return the default, both when
- // `--ex` is specified with no value, and when `--ex` isn't specified at
- // all.
- //
- // So we're doing something sneaky here. If we call `getOptions`, it'll
- // return the default value when `--ex` is not present, and `null` if
- // `--ex` is passed with no value. /shrug
- $opts = $input->getOptions();
-
- // Strict comparison to `1` (the default value) here, because `--ex 1`
- // will come in as `"1"`. Now we can tell the difference between
- // "no --ex present", because it's the integer 1, "--ex with no value",
- // because it's `null`, and "--ex 1", because it's the string "1".
- if ($opts['ex'] !== 1) {
- if ($input->getArgument('value')) {
- throw new \InvalidArgumentException('Too many arguments (supply either "value" or "--ex")');
- }
-
- return $this->writeExceptionContext($input, $output);
- }
-
- if ($input->getArgument('value')) {
- return $this->writeCodeContext($input, $output);
- }
-
- throw new RuntimeException('Not enough arguments (missing: "value").');
- }
-
- private function writeCodeContext(InputInterface $input, OutputInterface $output)
- {
- list($value, $reflector) = $this->getTargetAndReflector($input->getArgument('value'));
-
- // Set some magic local variables
- $this->setCommandScopeVariables($reflector);
-
- try {
- $output->page(CodeFormatter::format($reflector, $this->colorMode), ShellOutput::OUTPUT_RAW);
- } catch (RuntimeException $e) {
- $output->writeln(SignatureFormatter::format($reflector));
- throw $e;
- }
- }
-
- private function writeExceptionContext(InputInterface $input, OutputInterface $output)
- {
- $exception = $this->context->getLastException();
- if ($exception !== $this->lastException) {
- $this->lastException = null;
- $this->lastExceptionIndex = null;
- }
-
- $opts = $input->getOptions();
- if ($opts['ex'] === null) {
- if ($this->lastException && $this->lastExceptionIndex !== null) {
- $index = $this->lastExceptionIndex + 1;
- } else {
- $index = 0;
- }
- } else {
- $index = max(0, intval($input->getOption('ex')) - 1);
- }
-
- $trace = $exception->getTrace();
- array_unshift($trace, array(
- 'file' => $exception->getFile(),
- 'line' => $exception->getLine(),
- ));
-
- if ($index >= count($trace)) {
- $index = 0;
- }
-
- $this->lastException = $exception;
- $this->lastExceptionIndex = $index;
-
- $output->writeln($this->getApplication()->formatException($exception));
- $output->writeln('--');
- $this->writeTraceLine($output, $trace, $index);
- $this->writeTraceCodeSnippet($output, $trace, $index);
-
- $this->setCommandScopeVariablesFromContext($trace[$index]);
- }
-
- private function writeTraceLine(OutputInterface $output, array $trace, $index)
- {
- $file = isset($trace[$index]['file']) ? $this->replaceCwd($trace[$index]['file']) : 'n/a';
- $line = isset($trace[$index]['line']) ? $trace[$index]['line'] : 'n/a';
-
- $output->writeln(sprintf(
- 'From <info>%s:%d</info> at <strong>level %d</strong> of backtrace (of %d).',
- OutputFormatter::escape($file),
- OutputFormatter::escape($line),
- $index + 1,
- count($trace)
- ));
- }
-
- private function replaceCwd($file)
- {
- if ($cwd = getcwd()) {
- $cwd = rtrim($cwd, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
- }
-
- if ($cwd === false) {
- return $file;
- } else {
- return preg_replace('/^' . preg_quote($cwd, '/') . '/', '', $file);
- }
- }
-
- private function writeTraceCodeSnippet(OutputInterface $output, array $trace, $index)
- {
- if (!isset($trace[$index]['file'])) {
- return;
- }
-
- $file = $trace[$index]['file'];
- if ($fileAndLine = $this->extractEvalFileAndLine($file)) {
- list($file, $line) = $fileAndLine;
- } else {
- if (!isset($trace[$index]['line'])) {
- return;
- }
-
- $line = $trace[$index]['line'];
- }
-
- if (is_file($file)) {
- $code = @file_get_contents($file);
- }
-
- if (empty($code)) {
- return;
- }
-
- $output->write($this->getHighlighter()->getCodeSnippet($code, $line, 5, 5), ShellOutput::OUTPUT_RAW);
- }
-
- private function getHighlighter()
- {
- if (!$this->highlighter) {
- $factory = new ConsoleColorFactory($this->colorMode);
- $this->highlighter = new Highlighter($factory->getConsoleColor());
- }
-
- return $this->highlighter;
- }
-
- private function setCommandScopeVariablesFromContext(array $context)
- {
- $vars = array();
-
- // @todo __namespace?
- if (isset($context['class'])) {
- $vars['__class'] = $context['class'];
- if (isset($context['function'])) {
- $vars['__method'] = $context['function'];
- }
- } elseif (isset($context['function'])) {
- $vars['__function'] = $context['function'];
- }
-
- if (isset($context['file'])) {
- $file = $context['file'];
- if ($fileAndLine = $this->extractEvalFileAndLine($file)) {
- list($file, $line) = $fileAndLine;
- } elseif (isset($context['line'])) {
- $line = $context['line'];
- }
-
- if (is_file($file)) {
- $vars['__file'] = $file;
- if (isset($line)) {
- $vars['__line'] = $line;
- }
- $vars['__dir'] = dirname($file);
- }
- }
-
- $this->context->setCommandScopeVariables($vars);
- }
-
- private function extractEvalFileAndLine($file)
- {
- if (preg_match('/(.*)\\((\\d+)\\) : eval\\(\\)\'d code$/', $file, $matches)) {
- return array($matches[1], $matches[2]);
- }
- }
-}
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