My first commit of codes

vendor/psy/psysh/src/Psy/Command/BufferCommand.php

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+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Interact with the current code buffer.
+ *
+ * Shows and clears the buffer for the current multi-line expression.
+ */
+class BufferCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('buffer')
+            ->setAliases(array('buf'))
+            ->setDefinition(array(
+                new InputOption('clear', '', InputOption::VALUE_NONE, 'Clear the current buffer.'),
+            ))
+            ->setDescription('Show (or clear) the contents of the code input buffer.')
+            ->setHelp(
+                <<<HELP
+Show the contents of the code buffer for the current multi-line expression.
+
+Optionally, clear the buffer by passing the <info>--clear</info> option.
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $buf = $this->getApplication()->getCodeBuffer();
+        if ($input->getOption('clear')) {
+            $this->getApplication()->resetCodeBuffer();
+            $output->writeln($this->formatLines($buf, 'urgent'), ShellOutput::NUMBER_LINES);
+        } else {
+            $output->writeln($this->formatLines($buf), ShellOutput::NUMBER_LINES);
+        }
+    }
+
+    /**
+     * A helper method for wrapping buffer lines in `<urgent>` and `<return>` formatter strings.
+     *
+     * @param array  $lines
+     * @param string $type  (default: 'return')
+     *
+     * @return array Formatted strings
+     */
+    protected function formatLines(array $lines, $type = 'return')
+    {
+        $template = sprintf('<%s>%%s</%s>', $type, $type);
+
+        return array_map(function ($line) use ($template) {
+            return sprintf($template, $line);
+        }, $lines);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ClearCommand.php

@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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 Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Clear the Psy Shell.
+ *
+ * Just what it says on the tin.
+ */
+class ClearCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('clear')
+            ->setDefinition(array())
+            ->setDescription('Clear the Psy Shell screen.')
+            ->setHelp(
+                <<<HELP
+Clear the Psy Shell screen.
+
+Pro Tip: If your PHP has readline support, you should be able to use ctrl+l too!
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->write(sprintf('%c[2J%c[0;0f', 27, 27));
+    }
+}

vendor/psy/psysh/src/Psy/Command/Command.php

@@ -0,0 +1,282 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Shell;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Command\Command as BaseCommand;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Helper\TableStyle;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * The Psy Shell base command.
+ */
+abstract class Command extends BaseCommand
+{
+    /**
+     * Sets the application instance for this command.
+     *
+     * @param Application $application An Application instance
+     *
+     * @api
+     */
+    public function setApplication(Application $application = null)
+    {
+        if ($application !== null && !$application instanceof Shell) {
+            throw new \InvalidArgumentException('PsySH Commands require an instance of Psy\Shell.');
+        }
+
+        return parent::setApplication($application);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function asText()
+    {
+        $messages = array(
+            '<comment>Usage:</comment>',
+            ' ' . $this->getSynopsis(),
+            '',
+        );
+
+        if ($this->getAliases()) {
+            $messages[] = $this->aliasesAsText();
+        }
+
+        if ($this->getArguments()) {
+            $messages[] = $this->argumentsAsText();
+        }
+
+        if ($this->getOptions()) {
+            $messages[] = $this->optionsAsText();
+        }
+
+        if ($help = $this->getProcessedHelp()) {
+            $messages[] = '<comment>Help:</comment>';
+            $messages[] = ' ' . str_replace("\n", "\n ", $help) . "\n";
+        }
+
+        return implode("\n", $messages);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    private function getArguments()
+    {
+        $hidden = $this->getHiddenArguments();
+
+        return array_filter($this->getNativeDefinition()->getArguments(), function ($argument) use ($hidden) {
+            return !in_array($argument->getName(), $hidden);
+        });
+    }
+
+    /**
+     * These arguments will be excluded from help output.
+     *
+     * @return array
+     */
+    protected function getHiddenArguments()
+    {
+        return array('command');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    private function getOptions()
+    {
+        $hidden = $this->getHiddenOptions();
+
+        return array_filter($this->getNativeDefinition()->getOptions(), function ($option) use ($hidden) {
+            return !in_array($option->getName(), $hidden);
+        });
+    }
+
+    /**
+     * These options will be excluded from help output.
+     *
+     * @return array
+     */
+    protected function getHiddenOptions()
+    {
+        return array('verbose');
+    }
+
+    /**
+     * Format command aliases as text..
+     *
+     * @return string
+     */
+    private function aliasesAsText()
+    {
+        return '<comment>Aliases:</comment> <info>' . implode(', ', $this->getAliases()) . '</info>' . PHP_EOL;
+    }
+
+    /**
+     * Format command arguments as text.
+     *
+     * @return string
+     */
+    private function argumentsAsText()
+    {
+        $max = $this->getMaxWidth();
+        $messages = array();
+
+        $arguments = $this->getArguments();
+        if (!empty($arguments)) {
+            $messages[] = '<comment>Arguments:</comment>';
+            foreach ($arguments as $argument) {
+                if (null !== $argument->getDefault() && (!is_array($argument->getDefault()) || count($argument->getDefault()))) {
+                    $default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($argument->getDefault()));
+                } else {
+                    $default = '';
+                }
+
+                $description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $argument->getDescription());
+
+                $messages[] = sprintf(" <info>%-${max}s</info> %s%s", $argument->getName(), $description, $default);
+            }
+
+            $messages[] = '';
+        }
+
+        return implode(PHP_EOL, $messages);
+    }
+
+    /**
+     * Format options as text.
+     *
+     * @return string
+     */
+    private function optionsAsText()
+    {
+        $max = $this->getMaxWidth();
+        $messages = array();
+
+        $options = $this->getOptions();
+        if ($options) {
+            $messages[] = '<comment>Options:</comment>';
+
+            foreach ($options as $option) {
+                if ($option->acceptValue() && null !== $option->getDefault() && (!is_array($option->getDefault()) || count($option->getDefault()))) {
+                    $default = sprintf('<comment> (default: %s)</comment>', $this->formatDefaultValue($option->getDefault()));
+                } else {
+                    $default = '';
+                }
+
+                $multiple = $option->isArray() ? '<comment> (multiple values allowed)</comment>' : '';
+                $description = str_replace("\n", "\n" . str_pad('', $max + 2, ' '), $option->getDescription());
+
+                $optionMax = $max - strlen($option->getName()) - 2;
+                $messages[] = sprintf(
+                    " <info>%s</info> %-${optionMax}s%s%s%s",
+                    '--' . $option->getName(),
+                    $option->getShortcut() ? sprintf('(-%s) ', $option->getShortcut()) : '',
+                    $description,
+                    $default,
+                    $multiple
+                );
+            }
+
+            $messages[] = '';
+        }
+
+        return implode(PHP_EOL, $messages);
+    }
+
+    /**
+     * Calculate the maximum padding width for a set of lines.
+     *
+     * @return int
+     */
+    private function getMaxWidth()
+    {
+        $max = 0;
+
+        foreach ($this->getOptions() as $option) {
+            $nameLength = strlen($option->getName()) + 2;
+            if ($option->getShortcut()) {
+                $nameLength += strlen($option->getShortcut()) + 3;
+            }
+
+            $max = max($max, $nameLength);
+        }
+
+        foreach ($this->getArguments() as $argument) {
+            $max = max($max, strlen($argument->getName()));
+        }
+
+        return ++$max;
+    }
+
+    /**
+     * Format an option default as text.
+     *
+     * @param mixed $default
+     *
+     * @return string
+     */
+    private function formatDefaultValue($default)
+    {
+        if (is_array($default) && $default === array_values($default)) {
+            return sprintf("array('%s')", implode("', '", $default));
+        }
+
+        return str_replace("\n", '', var_export($default, true));
+    }
+
+    /**
+     * Get a Table instance.
+     *
+     * Falls back to legacy TableHelper.
+     *
+     * @return Table|TableHelper
+     */
+    protected function getTable(OutputInterface $output)
+    {
+        if (!class_exists('Symfony\Component\Console\Helper\Table')) {
+            return $this->getTableHelper();
+        }
+
+        $style = new TableStyle();
+        $style
+            ->setVerticalBorderChar(' ')
+            ->setHorizontalBorderChar('')
+            ->setCrossingChar('');
+
+        $table = new Table($output);
+
+        return $table
+            ->setRows(array())
+            ->setStyle($style);
+    }
+
+    /**
+     * Legacy fallback for getTable.
+     *
+     * @return TableHelper
+     */
+    protected function getTableHelper()
+    {
+        $table = $this->getApplication()->getHelperSet()->get('table');
+
+        return $table
+            ->setRows(array())
+            ->setLayout(TableHelper::LAYOUT_BORDERLESS)
+            ->setHorizontalBorderChar('')
+            ->setCrossingChar('');
+    }
+}

vendor/psy/psysh/src/Psy/Command/DocCommand.php

@@ -0,0 +1,98 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Formatter\DocblockFormatter;
+use Psy\Formatter\SignatureFormatter;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Read the documentation for an object, class, constant, method or property.
+ */
+class DocCommand extends ReflectingCommand
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('doc')
+            ->setAliases(array('rtfm', 'man'))
+            ->setDefinition(array(
+                new InputArgument('value', InputArgument::REQUIRED, 'Function, class, instance, constant, method or property to document.'),
+            ))
+            ->setDescription('Read the documentation for an object, class, constant, method or property.')
+            ->setHelp(
+                <<<HELP
+Read the documentation for an object, class, constant, method or property.
+
+It's awesome for well-documented code, not quite as awesome for poorly documented code.
+
+e.g.
+<return>>>> doc preg_replace</return>
+<return>>>> doc Psy\Shell</return>
+<return>>>> doc Psy\Shell::debug</return>
+<return>>>> \$s = new Psy\Shell</return>
+<return>>>> doc \$s->run</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        list($value, $reflector) = $this->getTargetAndReflector($input->getArgument('value'));
+
+        $doc = $this->getManualDoc($reflector) ?: DocblockFormatter::format($reflector);
+        $db  = $this->getApplication()->getManualDb();
+
+        $output->page(function ($output) use ($reflector, $doc, $db) {
+            $output->writeln(SignatureFormatter::format($reflector));
+            if (empty($doc) && !$db) {
+                $output->writeln('');
+                $output->writeln('<warning>PHP manual not found</warning>');
+                $output->writeln('    To document core PHP functionality, download the PHP reference manual:');
+                $output->writeln('    https://github.com/bobthecow/psysh#downloading-the-manual');
+            } else {
+                $output->writeln('');
+                $output->writeln($doc);
+            }
+        });
+    }
+
+    private function getManualDoc($reflector)
+    {
+        switch (get_class($reflector)) {
+            case 'ReflectionFunction':
+                $id = $reflector->name;
+                break;
+
+            case 'ReflectionMethod':
+                $id = $reflector->class . '::' . $reflector->name;
+                break;
+
+            default:
+                return false;
+        }
+
+        if ($db = $this->getApplication()->getManualDb()) {
+            return $db
+                ->query(sprintf('SELECT doc FROM php_manual WHERE id = %s', $db->quote($id)))
+                ->fetchColumn(0);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/DumpCommand.php

@@ -0,0 +1,96 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Exception\RuntimeException;
+use Psy\Presenter\Presenter;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Dump an object or primitive.
+ *
+ * This is like var_dump but *way* awesomer.
+ */
+class DumpCommand extends ReflectingCommand implements PresenterManagerAware
+{
+    private $presenterManager;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = $manager;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('dump')
+            ->setDefinition(array(
+                new InputArgument('target', InputArgument::REQUIRED, 'A target object or primitive to dump.', null),
+                new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse', 10),
+                new InputOption('all', 'a', InputOption::VALUE_NONE, 'Include private and protected methods and properties.'),
+            ))
+            ->setDescription('Dump an object or primitive.')
+            ->setHelp(
+                <<<HELP
+Dump an object or primitive.
+
+This is like var_dump but <strong>way</strong> awesomer.
+
+e.g.
+<return>>>> dump \$_</return>
+<return>>>> dump \$someVar</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $depth  = $input->getOption('depth');
+        $target = $this->resolveTarget($input->getArgument('target'));
+        $output->page($this->presenterManager->present($target, $depth, $input->getOption('all') ? Presenter::VERBOSE : 0));
+    }
+
+    /**
+     * Resolve dump target name.
+     *
+     * @throws RuntimeException if target name does not exist in the current scope.
+     *
+     * @param string $target
+     *
+     * @return mixed
+     */
+    protected function resolveTarget($target)
+    {
+        $matches = array();
+        if (preg_match(self::INSTANCE, $target, $matches)) {
+            return $this->getScopeVariable($matches[1]);
+        } else {
+            throw new RuntimeException('Unknown target: ' . $target);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ExitCommand.php

@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Exception\BreakException;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Exit the Psy Shell.
+ *
+ * Just what it says on the tin.
+ */
+class ExitCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('exit')
+            ->setAliases(array('quit', 'q'))
+            ->setDefinition(array())
+            ->setDescription('End the current session and return to caller.')
+            ->setHelp(
+                <<<HELP
+End the current session and return to caller.
+
+e.g.
+<return>>>> exit</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        throw new BreakException('Goodbye.');
+    }
+}

vendor/psy/psysh/src/Psy/Command/HelpCommand.php

@@ -0,0 +1,98 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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 Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Help command.
+ *
+ * Lists available commands, and gives command-specific help when asked nicely.
+ */
+class HelpCommand extends Command
+{
+    private $command;
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('help')
+            ->setAliases(array('?'))
+            ->setDefinition(array(
+                new InputArgument('command_name', InputArgument::OPTIONAL, 'The command name', null),
+            ))
+            ->setDescription('Show a list of commands. Type `help [foo]` for information about [foo].')
+            ->setHelp('My. How meta.');
+    }
+
+    /**
+     * Helper for setting a subcommand to retrieve help for.
+     *
+     * @param Command $command
+     */
+    public function setCommand($command)
+    {
+        $this->command = $command;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        if ($this->command !== null) {
+            // help for an individual command
+            $output->page($this->command->asText());
+            $this->command = null;
+        } elseif ($name = $input->getArgument('command_name')) {
+            // help for an individual command
+            $output->page($this->getApplication()->get($name)->asText());
+        } else {
+            // list available commands
+            $commands = $this->getApplication()->all();
+
+            $table = $this->getTable($output);
+
+            foreach ($commands as $name => $command) {
+                if ($name !== $command->getName()) {
+                    continue;
+                }
+
+                if ($command->getAliases()) {
+                    $aliases = sprintf('<comment>Aliases:</comment> %s', implode(', ', $command->getAliases()));
+                } else {
+                    $aliases = '';
+                }
+
+                $table->addRow(array(
+                    sprintf('<info>%s</info>', $name),
+                    $command->getDescription(),
+                    $aliases,
+                ));
+            }
+
+            $output->startPaging();
+            if ($table instanceof TableHelper) {
+                $table->render($output);
+            } else {
+                $table->render();
+            }
+            $output->stopPaging();
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/HistoryCommand.php

@@ -0,0 +1,260 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Output\ShellOutput;
+use Psy\Readline\Readline;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Psy Shell history command.
+ *
+ * Shows, searches and replays readline history. Not too shabby.
+ */
+class HistoryCommand extends Command
+{
+    /**
+     * Set the Shell's Readline service.
+     *
+     * @param Readline $readline
+     */
+    public function setReadline(Readline $readline)
+    {
+        $this->readline = $readline;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('history')
+            ->setAliases(array('hist'))
+            ->setDefinition(array(
+                new InputOption('show',        's', InputOption::VALUE_REQUIRED, 'Show the given range of lines'),
+                new InputOption('head',        'H', InputOption::VALUE_REQUIRED, 'Display the first N items.'),
+                new InputOption('tail',        'T', InputOption::VALUE_REQUIRED, 'Display the last N items.'),
+
+                new InputOption('grep',        'G', InputOption::VALUE_REQUIRED, 'Show lines matching the given pattern (string or regex).'),
+                new InputOption('insensitive', 'i', InputOption::VALUE_NONE,     'Case insensitive search (requires --grep).'),
+                new InputOption('invert',      'v', InputOption::VALUE_NONE,     'Inverted search (requires --grep).'),
+
+                new InputOption('no-numbers',  'N', InputOption::VALUE_NONE,     'Omit line numbers.'),
+
+                new InputOption('save',        '',  InputOption::VALUE_REQUIRED, 'Save history to a file.'),
+                new InputOption('replay',      '',  InputOption::VALUE_NONE,     'Replay'),
+                new InputOption('clear',       '',  InputOption::VALUE_NONE,     'Clear the history.'),
+            ))
+            ->setDescription('Show the Psy Shell history.')
+            ->setHelp(
+                <<<HELP
+Show, search, save or replay the Psy Shell history.
+
+e.g.
+<return>>>> history --grep /[bB]acon/</return>
+<return>>>> history --show 0..10 --replay</return>
+<return>>>> history --clear</return>
+<return>>>> history --tail 1000 --save somefile.txt</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $this->validateOnlyOne($input, array('show', 'head', 'tail'));
+        $this->validateOnlyOne($input, array('save', 'replay', 'clear'));
+
+        $history = $this->getHistorySlice(
+            $input->getOption('show'),
+            $input->getOption('head'),
+            $input->getOption('tail')
+        );
+        $highlighted = false;
+
+        $invert      = $input->getOption('invert');
+        $insensitive = $input->getOption('insensitive');
+        if ($pattern = $input->getOption('grep')) {
+            if (substr($pattern, 0, 1) !== '/' || substr($pattern, -1) !== '/' || strlen($pattern) < 3) {
+                $pattern = '/' . preg_quote($pattern, '/') . '/';
+            }
+
+            if ($insensitive) {
+                $pattern .= 'i';
+            }
+
+            $this->validateRegex($pattern);
+
+            $matches     = array();
+            $highlighted = array();
+            foreach ($history as $i => $line) {
+                if (preg_match($pattern, $line, $matches) xor $invert) {
+                    if (!$invert) {
+                        $chunks = explode($matches[0], $history[$i]);
+                        $chunks = array_map(array(__CLASS__, 'escape'), $chunks);
+                        $glue   = sprintf('<urgent>%s</urgent>', self::escape($matches[0]));
+
+                        $highlighted[$i] = implode($glue, $chunks);
+                    }
+                } else {
+                    unset($history[$i]);
+                }
+            }
+        } elseif ($invert) {
+            throw new \InvalidArgumentException('Cannot use -v without --grep.');
+        } elseif ($insensitive) {
+            throw new \InvalidArgumentException('Cannot use -i without --grep.');
+        }
+
+        if ($save = $input->getOption('save')) {
+            $output->writeln(sprintf('Saving history in %s...', $save));
+            file_put_contents($save, implode(PHP_EOL, $history) . PHP_EOL);
+            $output->writeln('<info>History saved.</info>');
+        } elseif ($input->getOption('replay')) {
+            if (!($input->getOption('show') || $input->getOption('head') || $input->getOption('tail'))) {
+                throw new \InvalidArgumentException('You must limit history via --head, --tail or --show before replaying.');
+            }
+
+            $count = count($history);
+            $output->writeln(sprintf('Replaying %d line%s of history', $count, ($count !== 1) ? 's' : ''));
+            $this->getApplication()->addInput($history);
+        } elseif ($input->getOption('clear')) {
+            $this->clearHistory();
+            $output->writeln('<info>History cleared.</info>');
+        } else {
+            $type = $input->getOption('no-numbers') ? 0 : ShellOutput::NUMBER_LINES;
+            if (!$highlighted) {
+                $type = $type | ShellOutput::OUTPUT_RAW;
+            }
+
+            $output->page($highlighted ?: $history, $type);
+        }
+    }
+
+    /**
+     * Extract a range from a string.
+     *
+     * @param string $range
+     *
+     * @return array [ start, end ]
+     */
+    private function extractRange($range)
+    {
+        if (preg_match('/^\d+$/', $range)) {
+            return array($range, $range + 1);
+        }
+
+        $matches = array();
+        if ($range !== '..' && preg_match('/^(\d*)\.\.(\d*)$/', $range, $matches)) {
+            $start = $matches[1] ? intval($matches[1]) : 0;
+            $end   = $matches[2] ? intval($matches[2]) + 1 : PHP_INT_MAX;
+
+            return array($start, $end);
+        }
+
+        throw new \InvalidArgumentException('Unexpected range: ' . $range);
+    }
+
+    /**
+     * Retrieve a slice of the readline history.
+     *
+     * @param string $show
+     * @param string $head
+     * @param string $tail
+     *
+     * @return array A slilce of history.
+     */
+    private function getHistorySlice($show, $head, $tail)
+    {
+        $history = $this->readline->listHistory();
+
+        if ($show) {
+            list($start, $end) = $this->extractRange($show);
+            $length = $end - $start;
+        } elseif ($head) {
+            if (!preg_match('/^\d+$/', $head)) {
+                throw new \InvalidArgumentException('Please specify an integer argument for --head.');
+            }
+
+            $start  = 0;
+            $length = intval($head);
+        } elseif ($tail) {
+            if (!preg_match('/^\d+$/', $tail)) {
+                throw new \InvalidArgumentException('Please specify an integer argument for --tail.');
+            }
+
+            $start  = count($history) - $tail;
+            $length = intval($tail) + 1;
+        } else {
+            return $history;
+        }
+
+        return array_slice($history, $start, $length, true);
+    }
+
+    /**
+     * Validate that $pattern is a valid regular expression.
+     *
+     * @param string $pattern
+     *
+     * @return boolean
+     */
+    private function validateRegex($pattern)
+    {
+        set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
+        try {
+            preg_match($pattern, '');
+        } catch (ErrorException $e) {
+            throw new RuntimeException(str_replace('preg_match(): ', 'Invalid regular expression: ', $e->getRawMessage()));
+        }
+        restore_error_handler();
+    }
+
+    /**
+     * Validate that only one of the given $options is set.
+     *
+     * @param InputInterface $input
+     * @param array          $options
+     */
+    private function validateOnlyOne(InputInterface $input, array $options)
+    {
+        $count = 0;
+        foreach ($options as $opt) {
+            if ($input->getOption($opt)) {
+                $count++;
+            }
+        }
+
+        if ($count > 1) {
+            throw new \InvalidArgumentException('Please specify only one of --' . implode(', --', $options));
+        }
+    }
+
+    /**
+     * Clear the readline history.
+     */
+    private function clearHistory()
+    {
+        $this->readline->clearHistory();
+    }
+
+    public static function escape($string)
+    {
+        return OutputFormatter::escape($string);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand.php

@@ -0,0 +1,278 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\InterfaceEnumerator;
+use Psy\Command\ListCommand\MethodEnumerator;
+use Psy\Command\ListCommand\PropertyEnumerator;
+use Psy\Command\ListCommand\TraitEnumerator;
+use Psy\Command\ListCommand\VariableEnumerator;
+use Psy\Exception\RuntimeException;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Helper\TableHelper;
+use Symfony\Component\Console\Input\InputArgument;
+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 PresenterManagerAware
+{
+    protected $presenterManager;
+    protected $enumerators;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = $manager;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('ls')
+            ->setAliases(array('list', 'dir'))
+            ->setDefinition(array(
+                new InputArgument('target', InputArgument::OPTIONAL, 'A target class or object to list.', null),
+
+                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('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).'),
+
+                new InputOption('grep',        'G', InputOption::VALUE_REQUIRED, 'Limit to items matching the given pattern (string or regex).'),
+                new InputOption('insensitive', 'i', InputOption::VALUE_NONE,     'Case-insensitive search (requires --grep).'),
+                new InputOption('invert',      'v', InputOption::VALUE_NONE,     'Inverted search (requires --grep).'),
+
+                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>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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, true);
+        } else {
+            $reflector = null;
+        }
+
+        // TODO: something cleaner than this :-/
+        if ($input->getOption('long')) {
+            $output->startPaging();
+        }
+
+        foreach ($this->enumerators as $enumerator) {
+            $this->$method($output, $enumerator->enumerate($input, $reflector, $target));
+        }
+
+        if ($input->getOption('long')) {
+            $output->stopPaging();
+        }
+    }
+
+    /**
+     * Initialize Enumerators.
+     */
+    protected function initEnumerators()
+    {
+        if (!isset($this->enumerators)) {
+            $mgr = $this->presenterManager;
+
+            $this->enumerators = array(
+                new ClassConstantEnumerator($mgr),
+                new ClassEnumerator($mgr),
+                new ConstantEnumerator($mgr),
+                new FunctionEnumerator($mgr),
+                new GlobalVariableEnumerator($mgr),
+                new InterfaceEnumerator($mgr),
+                new PropertyEnumerator($mgr),
+                new MethodEnumerator($mgr),
+                new TraitEnumerator($mgr),
+                new VariableEnumerator($mgr, $this->context),
+            );
+        }
+    }
+
+    /**
+     * Write the list items to $output.
+     *
+     * @param OutputInterface $output
+     * @param null|array      $result List of enumerated items.
+     */
+    protected function write(OutputInterface $output, array $result = null)
+    {
+        if ($result === null) {
+            return;
+        }
+
+        foreach ($result as $label => $items) {
+            $names = array_map(array($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 null|array      $result List of enumerated items.
+     */
+    protected function writeLong(OutputInterface $output, array $result = null)
+    {
+        if ($result === null) {
+            return;
+        }
+
+        $table = $this->getTable($output);
+
+        foreach ($result as $label => $items) {
+            $output->writeln('');
+            $output->writeln(sprintf('<strong>%s:</strong>', $label));
+
+            $table->setRows(array());
+            foreach ($items as $item) {
+                $table->addRow(array($this->formatItemName($item), $item['value']));
+            }
+
+            if ($table instanceof TableHelper) {
+                $table->render($output);
+            } else {
+                $table->render();
+            }
+        }
+    }
+
+    /**
+     * Format an item name given its visibility.
+     *
+     * @param array $item
+     *
+     * @return string
+     */
+    private function formatItemName($item)
+    {
+        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 $input)
+    {
+        // grep, invert and insensitive
+        if (!$input->getOption('grep')) {
+            foreach (array('invert', 'insensitive') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense without --grep');
+                }
+            }
+        }
+
+        if (!$input->getArgument('target')) {
+            // if no target is passed, there can be no properties or methods
+            foreach (array('properties', 'methods') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense without a specified target.');
+                }
+            }
+
+            foreach (array('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 (array('vars', 'globals', 'functions', 'classes', 'interfaces', 'traits') as $option) {
+                if ($input->getOption($option)) {
+                    throw new RuntimeException('--' . $option . ' does not make sense with a specified target.');
+                }
+            }
+
+            foreach (array('constants', 'properties', 'methods') 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);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ClassConstantEnumerator.php

@@ -0,0 +1,118 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Psy\Reflection\ReflectionConstant;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Class Constant Enumerator class.
+ */
+class ClassConstantEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list constants when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list constants on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            // TODO: handle ReflectionExtension as well
+            return;
+        }
+
+        // only list constants if we are specifically asked
+        if (!$input->getOption('constants')) {
+            return;
+        }
+
+        $constants = $this->prepareConstants($this->getConstants($reflector));
+
+        if (empty($constants)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $constants;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined constants for the given class or object Reflector.
+     *
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getConstants(\Reflector $reflector)
+    {
+        $constants = array();
+        foreach ($reflector->getConstants() as $name => $constant) {
+            $constants[$name] = new ReflectionConstant($reflector, $name);
+        }
+
+        // TODO: this should be natcasesort
+        ksort($constants);
+
+        return $constants;
+    }
+
+    /**
+     * Prepare formatted constant array.
+     *
+     * @param array $constants
+     *
+     * @return array
+     */
+    protected function prepareConstants(array $constants)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($constants as $name => $constant) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CONSTANT,
+                    'value' => $this->presentRef($constant->getValue()),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Constants';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Constants';
+        } else {
+            return 'Class Constants';
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ClassEnumerator.php

@@ -0,0 +1,80 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Class Enumerator class.
+ */
+class ClassEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list classes when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --classes Foo
+        //
+        // ... for listing classes in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list classes if we are specifically asked
+        if (!$input->getOption('classes')) {
+            return;
+        }
+
+        $classes = $this->prepareClasses(get_declared_classes());
+
+        if (empty($classes)) {
+            return;
+        }
+
+        return array(
+            'Classes' => $classes,
+        );
+    }
+
+    /**
+     * Prepare formatted class array.
+     *
+     * @param array $class
+     *
+     * @return array
+     */
+    protected function prepareClasses(array $classes)
+    {
+        natcasesort($classes);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($classes as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/ConstantEnumerator.php

@@ -0,0 +1,103 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Constant Enumerator class.
+ */
+class ConstantEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list constants when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --constants Foo
+        //
+        // ... for listing constants in the Foo namespace
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list constants if we are specifically asked
+        if (!$input->getOption('constants')) {
+            return;
+        }
+
+        $category  = $input->getOption('user') ? 'user' : $input->getOption('category');
+        $label     = $category ? ucfirst($category) . ' Constants' : 'Constants';
+        $constants = $this->prepareConstants($this->getConstants($category));
+
+        if (empty($constants)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$label] = $constants;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined constants.
+     *
+     * Optionally restrict constants to a given category, e.g. "date".
+     *
+     * @param string $category
+     *
+     * @return array
+     */
+    protected function getConstants($category = null)
+    {
+        if (!$category) {
+            return get_defined_constants();
+        }
+
+        $consts = get_defined_constants(true);
+
+        return isset($consts[$category]) ? $consts[$category] : array();
+    }
+
+    /**
+     * Prepare formatted constant array.
+     *
+     * @param array $constants
+     *
+     * @return array
+     */
+    protected function prepareConstants(array $constants)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        $names = array_keys($constants);
+        natcasesort($names);
+
+        foreach ($names as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CONSTANT,
+                    'value' => $this->presentRef($constants[$name]),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/Enumerator.php

@@ -0,0 +1,146 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Psy\Formatter\SignatureFormatter;
+use Psy\Presenter\PresenterManager;
+use Psy\Util\Mirror;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Abstract Enumerator class.
+ */
+abstract class Enumerator
+{
+    // Output styles
+    const IS_PUBLIC    = 'public';
+    const IS_PROTECTED = 'protected';
+    const IS_PRIVATE   = 'private';
+    const IS_GLOBAL    = 'global';
+    const IS_CONSTANT  = 'const';
+    const IS_CLASS     = 'class';
+    const IS_FUNCTION  = 'function';
+
+    private $presenterManager;
+
+    private $filter       = false;
+    private $invertFilter = false;
+    private $pattern;
+
+    /**
+     * Enumerator constructor.
+     *
+     * @param PresenterManager $presenterManager
+     */
+    public function __construct(PresenterManager $presenterManager)
+    {
+        $this->presenterManager = $presenterManager;
+    }
+
+    /**
+     * Return a list of categorized things with the given input options and target.
+     *
+     * @param InputInterface $input
+     * @param Reflector      $reflector
+     * @param mixed          $target
+     *
+     * @return array
+     */
+    public function enumerate(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        $this->setFilter($input);
+
+        return $this->listItems($input, $reflector, $target);
+    }
+
+    /**
+     * Enumerate specific items with the given input options and target.
+     *
+     * Implementing classes should return an array of arrays:
+     *
+     *     [
+     *         'Constants' => [
+     *             'FOO' => [
+     *                 'name'  => 'FOO',
+     *                 'style' => 'public',
+     *                 'value' => '123',
+     *             ],
+     *         ],
+     *     ]
+     *
+     * @param InputInterface $input
+     * @param Reflector      $reflector
+     * @param mixed          $target
+     *
+     * @return array
+     */
+    abstract protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null);
+
+    protected function presentRef($value)
+    {
+        return $this->presenterManager->presentRef($value);
+    }
+
+    protected function showItem($name)
+    {
+        return $this->filter === false || (preg_match($this->pattern, $name) xor $this->invertFilter);
+    }
+
+    private function setFilter(InputInterface $input)
+    {
+        if ($pattern = $input->getOption('grep')) {
+            if (substr($pattern, 0, 1) !== '/' || substr($pattern, -1) !== '/' || strlen($pattern) < 3) {
+                $pattern = '/' . preg_quote($pattern, '/') . '/';
+            }
+
+            if ($input->getOption('insensitive')) {
+                $pattern .= 'i';
+            }
+
+            $this->validateRegex($pattern);
+
+            $this->filter       = true;
+            $this->pattern      = $pattern;
+            $this->invertFilter = $input->getOption('invert');
+        } else {
+            $this->filter = false;
+        }
+    }
+
+    /**
+     * Validate that $pattern is a valid regular expression.
+     *
+     * @param string $pattern
+     *
+     * @return boolean
+     */
+    private function validateRegex($pattern)
+    {
+        set_error_handler(array('Psy\Exception\ErrorException', 'throwException'));
+        try {
+            preg_match($pattern, '');
+        } catch (ErrorException $e) {
+            throw new RuntimeException(str_replace('preg_match(): ', 'Invalid regular expression: ', $e->getRawMessage()));
+        }
+        restore_error_handler();
+    }
+
+    protected function presentSignature($target)
+    {
+        // This might get weird if the signature is actually for a reflector. Hrm.
+        if (!$target instanceof \Reflector) {
+            $target = Mirror::get($target);
+        }
+
+        return SignatureFormatter::format($target);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/FunctionEnumerator.php

@@ -0,0 +1,112 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Function Enumerator class.
+ */
+class FunctionEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list functions when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --functions Foo
+        //
+        // ... for listing functions in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list functions if we are specifically asked
+        if (!$input->getOption('functions')) {
+            return;
+        }
+
+        if ($input->getOption('user')) {
+            $label     = 'User Functions';
+            $functions = $this->getFunctions('user');
+        } elseif ($input->getOption('internal')) {
+            $label     = 'Internal Functions';
+            $functions = $this->getFunctions('internal');
+        } else {
+            $label     = 'Functions';
+            $functions = $this->getFunctions();
+        }
+
+        $functions = $this->prepareFunctions($functions);
+
+        if (empty($functions)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$label] = $functions;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined functions.
+     *
+     * Optionally limit functions to "user" or "internal" functions.
+     *
+     * @param null|string $type "user" or "internal" (default: both)
+     *
+     * @return array
+     */
+    protected function getFunctions($type = null)
+    {
+        $funcs = get_defined_functions();
+
+        if ($type) {
+            return $funcs[$type];
+        } else {
+            return array_merge($funcs['internal'], $funcs['user']);
+        }
+    }
+
+    /**
+     * Prepare formatted function array.
+     *
+     * @param array $functions
+     *
+     * @return array
+     */
+    protected function prepareFunctions(array $functions)
+    {
+        natcasesort($functions);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($functions as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_FUNCTION,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/GlobalVariableEnumerator.php

@@ -0,0 +1,92 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Global Variable Enumerator class.
+ */
+class GlobalVariableEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list globals when no Reflector is present.
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list globals if we are specifically asked
+        if (!$input->getOption('globals')) {
+            return;
+        }
+
+        $globals = $this->prepareGlobals($this->getGlobals());
+
+        if (empty($globals)) {
+            return;
+        }
+
+        return array(
+            'Global Variables' => $globals,
+        );
+    }
+
+    /**
+     * Get defined global variables.
+     *
+     * @return array
+     */
+    protected function getGlobals()
+    {
+        global $GLOBALS;
+
+        $names = array_keys($GLOBALS);
+        natcasesort($names);
+
+        $ret = array();
+        foreach ($names as $name) {
+            $ret[$name] = $GLOBALS[$name];
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Prepare formatted global variable array.
+     *
+     * @param array $globals
+     *
+     * @return array
+     */
+    protected function prepareGlobals($globals)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($globals as $name => $value) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => self::IS_GLOBAL,
+                    'value' => $this->presentRef($value),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/InterfaceEnumerator.php

@@ -0,0 +1,80 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Interface Enumerator class.
+ */
+class InterfaceEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list interfaces when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --interfaces Foo
+        //
+        // ... for listing interfaces in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list interfaces if we are specifically asked
+        if (!$input->getOption('interfaces')) {
+            return;
+        }
+
+        $interfaces = $this->prepareInterfaces(get_declared_interfaces());
+
+        if (empty($interfaces)) {
+            return;
+        }
+
+        return array(
+            'Interfaces' => $interfaces,
+        );
+    }
+
+    /**
+     * Prepare formatted interface array.
+     *
+     * @param array $interfaces
+     *
+     * @return array
+     */
+    protected function prepareInterfaces(array $interfaces)
+    {
+        natcasesort($interfaces);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($interfaces as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/MethodEnumerator.php

@@ -0,0 +1,138 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Method Enumerator class.
+ */
+class MethodEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list methods when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list methods on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            return;
+        }
+
+        // only list methods if we are specifically asked
+        if (!$input->getOption('methods')) {
+            return;
+        }
+
+        $showAll = $input->getOption('all');
+        $methods = $this->prepareMethods($this->getMethods($showAll, $reflector));
+
+        if (empty($methods)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $methods;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined methods for the given class or object Reflector.
+     *
+     * @param boolean    $showAll   Include private and protected methods.
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getMethods($showAll, \Reflector $reflector)
+    {
+        $methods = array();
+        foreach ($reflector->getMethods() as $name => $method) {
+            if ($showAll || $method->isPublic()) {
+                $methods[$method->getName()] = $method;
+            }
+        }
+
+        // TODO: this should be natcasesort
+        ksort($methods);
+
+        return $methods;
+    }
+
+    /**
+     * Prepare formatted method array.
+     *
+     * @param array $methods
+     *
+     * @return array
+     */
+    protected function prepareMethods(array $methods)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($methods as $name => $method) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => $this->getVisibilityStyle($method),
+                    'value' => $this->presentSignature($method),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Methods';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Methods';
+        } else {
+            return 'Class Methods';
+        }
+    }
+
+    /**
+     * Get output style for the given method's visibility.
+     *
+     * @param \ReflectionMethod $method
+     *
+     * @return string
+     */
+    private function getVisibilityStyle(\ReflectionMethod $method)
+    {
+        if ($method->isPublic()) {
+            return self::IS_PUBLIC;
+        } elseif ($method->isProtected()) {
+            return self::IS_PROTECTED;
+        } else {
+            return self::IS_PRIVATE;
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/PropertyEnumerator.php

@@ -0,0 +1,161 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Property Enumerator class.
+ */
+class PropertyEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list properties when a Reflector is present.
+
+        if ($reflector === null) {
+            return;
+        }
+
+        // We can only list properties on actual class (or object) reflectors.
+        if (!$reflector instanceof \ReflectionClass) {
+            return;
+        }
+
+        // only list properties if we are specifically asked
+        if (!$input->getOption('properties')) {
+            return;
+        }
+
+        $showAll    = $input->getOption('all');
+        $properties = $this->prepareProperties($this->getProperties($showAll, $reflector), $target);
+
+        if (empty($properties)) {
+            return;
+        }
+
+        $ret = array();
+        $ret[$this->getKindLabel($reflector)] = $properties;
+
+        return $ret;
+    }
+
+    /**
+     * Get defined properties for the given class or object Reflector.
+     *
+     * @param boolean    $showAll   Include private and protected properties.
+     * @param \Reflector $reflector
+     *
+     * @return array
+     */
+    protected function getProperties($showAll, \Reflector $reflector)
+    {
+        $properties = array();
+        foreach ($reflector->getProperties() as $property) {
+            if ($showAll || $property->isPublic()) {
+                $properties[$property->getName()] = $property;
+            }
+        }
+
+        // TODO: this should be natcasesort
+        ksort($properties);
+
+        return $properties;
+    }
+
+    /**
+     * Prepare formatted property array.
+     *
+     * @param array $properties
+     *
+     * @return array
+     */
+    protected function prepareProperties(array $properties, $target = null)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($properties as $name => $property) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => $this->getVisibilityStyle($property),
+                    'value' => $this->presentValue($property, $target),
+                );
+            }
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Get a label for the particular kind of "class" represented.
+     *
+     * @param \ReflectionClass $reflector
+     *
+     * @return string
+     */
+    protected function getKindLabel(\ReflectionClass $reflector)
+    {
+        if ($reflector->isInterface()) {
+            return 'Interface Properties';
+        } elseif (method_exists($reflector, 'isTrait') && $reflector->isTrait()) {
+            return 'Trait Properties';
+        } else {
+            return 'Class Properties';
+        }
+    }
+
+    /**
+     * Get output style for the given property's visibility.
+     *
+     * @param \ReflectionProperty $property
+     *
+     * @return string
+     */
+    private function getVisibilityStyle(\ReflectionProperty $property)
+    {
+        if ($property->isPublic()) {
+            return self::IS_PUBLIC;
+        } elseif ($property->isProtected()) {
+            return self::IS_PROTECTED;
+        } else {
+            return self::IS_PRIVATE;
+        }
+    }
+
+    /**
+     * Present the $target's current value for a reflection property.
+     *
+     * @param \ReflectionProperty $property
+     * @param mixed               $target
+     *
+     * @return string
+     */
+    protected function presentValue(\ReflectionProperty $property, $target)
+    {
+        if (!is_object($target)) {
+            // TODO: figure out if there's a way to return defaults when target
+            // is a class/interface/trait rather than an object.
+            return '';
+        }
+
+        $property->setAccessible(true);
+        $value = $property->getValue($target);
+
+        return $this->presentRef($value);
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/TraitEnumerator.php

@@ -0,0 +1,85 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Trait Enumerator class.
+ */
+class TraitEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // bail early if current PHP doesn't know about traits.
+        if (!function_exists('trait_exists')) {
+            return;
+        }
+
+        // only list traits when no Reflector is present.
+        //
+        // TODO: make a NamespaceReflector and pass that in for commands like:
+        //
+        //     ls --traits Foo
+        //
+        // ... for listing traits in the Foo namespace
+
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list traits if we are specifically asked
+        if (!$input->getOption('traits')) {
+            return;
+        }
+
+        $traits = $this->prepareTraits(get_declared_traits());
+
+        if (empty($traits)) {
+            return;
+        }
+
+        return array(
+            'Traits' => $traits,
+        );
+    }
+
+    /**
+     * Prepare formatted trait array.
+     *
+     * @param array $traits
+     *
+     * @return array
+     */
+    protected function prepareTraits(array $traits)
+    {
+        natcasesort($traits);
+
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($traits as $name) {
+            if ($this->showItem($name)) {
+                $ret[$name] = array(
+                    'name'  => $name,
+                    'style' => self::IS_CLASS,
+                    'value' => $this->presentSignature($name),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ListCommand/VariableEnumerator.php

@@ -0,0 +1,129 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Psy\Context;
+use Psy\Presenter\PresenterManager;
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Variable Enumerator class.
+ */
+class VariableEnumerator extends Enumerator
+{
+    private static $specialVars = array('_', '_e');
+    private $context;
+
+    /**
+     * Variable Enumerator constructor.
+     *
+     * Unlike most other enumerators, the Variable Enumerator needs access to
+     * the current scope variables, so we need to pass it a Context instance.
+     *
+     * @param PresenterManager $presenterManager
+     * @param Context          $context
+     */
+    public function __construct(PresenterManager $presenterManager, Context $context)
+    {
+        $this->context = $context;
+        parent::__construct($presenterManager);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list variables when no Reflector is present.
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list variables if we are specifically asked
+        if (!$input->getOption('vars')) {
+            return;
+        }
+
+        $showAll   = $input->getOption('all');
+        $variables = $this->prepareVariables($this->getVariables($showAll));
+
+        if (empty($variables)) {
+            return;
+        }
+
+        return array(
+            'Variables' => $variables,
+        );
+    }
+
+    /**
+     * Get scope variables.
+     *
+     * @param boolean $showAll Include special variables (e.g. $_).
+     *
+     * @return array
+     */
+    protected function getVariables($showAll)
+    {
+        $scopeVars = $this->context->getAll();
+        uksort($scopeVars, function ($a, $b) {
+            if ($a === '_e') {
+                return 1;
+            } elseif ($b === '_e') {
+                return -1;
+            } elseif ($a === '_') {
+                return 1;
+            } elseif ($b === '_') {
+                return -1;
+            } else {
+                // TODO: this should be natcasesort
+                return strcasecmp($a, $b);
+            }
+        });
+
+        $ret = array();
+        foreach ($scopeVars as $name => $val) {
+            if (!$showAll && in_array($name, self::$specialVars)) {
+                continue;
+            }
+
+            $ret[$name] = $val;
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Prepare formatted variable array.
+     *
+     * @param array $variables
+     *
+     * @return array
+     */
+    protected function prepareVariables(array $variables)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+        foreach ($variables as $name => $val) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => in_array($name, self::$specialVars) ? self::IS_PRIVATE : self::IS_PUBLIC,
+                    'value' => $this->presentRef($val), // TODO: add types to variable signatures
+                );
+            }
+        }
+
+        return $ret;
+    }
+}

vendor/psy/psysh/src/Psy/Command/ParseCommand.php

@@ -0,0 +1,125 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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 PhpParser\Lexer;
+use PhpParser\Parser;
+use Psy\Presenter\PHPParserPresenter;
+use Psy\Presenter\PresenterManager;
+use Psy\Presenter\PresenterManagerAware;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Parse PHP code and show the abstract syntax tree.
+ */
+class ParseCommand extends Command implements PresenterManagerAware
+{
+    private $presenterManager;
+    private $parser;
+
+    /**
+     * PresenterManagerAware interface.
+     *
+     * @param PresenterManager $manager
+     */
+    public function setPresenterManager(PresenterManager $manager)
+    {
+        $this->presenterManager = new PresenterManager();
+
+        foreach ($manager as $presenter) {
+            $this->presenterManager->addPresenter($presenter);
+        }
+
+        $this->presenterManager->addPresenter(new PHPParserPresenter());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('parse')
+            ->setDefinition(array(
+                new InputArgument('code', InputArgument::REQUIRED, 'PHP code to parse.'),
+                new InputOption('depth', '', InputOption::VALUE_REQUIRED, 'Depth to parse', 10),
+            ))
+            ->setDescription('Parse PHP code and show the abstract syntax tree.')
+            ->setHelp(
+                <<<HELP
+Parse PHP code and show the abstract syntax tree.
+
+This command is used in the development of PsySH. Given a string of PHP code,
+it pretty-prints the PHP Parser parse tree.
+
+See https://github.com/nikic/PHP-Parser
+
+It prolly won't be super useful for most of you, but it's here if you want to play.
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $code = $input->getArgument('code');
+        if (strpos('<?', $code) === false) {
+            $code = '<?php ' . $code;
+        }
+
+        $depth = $input->getOption('depth');
+        $nodes = $this->parse($code);
+        $output->page($this->presenterManager->present($nodes, $depth));
+    }
+
+    /**
+     * Lex and parse a string of code into statements.
+     *
+     * @param string $code
+     *
+     * @return array Statements
+     */
+    private function parse($code)
+    {
+        $parser = $this->getParser();
+
+        try {
+            return $parser->parse($code);
+        } catch (\PhpParser\Error $e) {
+            if (strpos($e->getMessage(), 'unexpected EOF') === false) {
+                throw $e;
+            }
+
+            // If we got an unexpected EOF, let's try it again with a semicolon.
+            return $parser->parse($code . ';');
+        }
+    }
+
+    /**
+     * Get (or create) the Parser instance.
+     *
+     * @return Parser
+     */
+    private function getParser()
+    {
+        if (!isset($this->parser)) {
+            $this->parser = new Parser(new Lexer());
+        }
+
+        return $this->parser;
+    }
+}

vendor/psy/psysh/src/Psy/Command/PsyVersionCommand.php

@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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 Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * A dumb little command for printing out the current Psy Shell version.
+ */
+class PsyVersionCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('version')
+            ->setDefinition(array())
+            ->setDescription('Show Psy Shell version.')
+            ->setHelp('Show Psy Shell version.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->writeln($this->getApplication()->getVersion());
+    }
+}

vendor/psy/psysh/src/Psy/Command/ReflectingCommand.php

@@ -0,0 +1,172 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Context;
+use Psy\ContextAware;
+use Psy\Exception\RuntimeException;
+use Psy\Util\Mirror;
+
+/**
+ * An abstract command with helpers for inspecting the current context.
+ */
+abstract class ReflectingCommand extends Command implements ContextAware
+{
+    const CLASS_OR_FUNC   = '/^[\\\\\w]+$/';
+    const INSTANCE        = '/^\$(\w+)$/';
+    const CLASS_MEMBER    = '/^([\\\\\w]+)::(\w+)$/';
+    const CLASS_STATIC    = '/^([\\\\\w]+)::\$(\w+)$/';
+    const INSTANCE_MEMBER = '/^\$(\w+)(::|->)(\w+)$/';
+    const INSTANCE_STATIC = '/^\$(\w+)::\$(\w+)$/';
+
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * Get the target for a value.
+     *
+     * @throws \InvalidArgumentException when the value specified can't be resolved.
+     *
+     * @param string  $valueName Function, class, variable, constant, method or property name.
+     * @param boolean $classOnly True if the name should only refer to a class, function or instance
+     *
+     * @return array (class or instance name, member name, kind)
+     */
+    protected function getTarget($valueName, $classOnly = false)
+    {
+        $valueName = trim($valueName);
+        $matches   = array();
+        switch (true) {
+            case preg_match(self::CLASS_OR_FUNC, $valueName, $matches):
+                return array($this->resolveName($matches[0], true), null, 0);
+
+            case preg_match(self::INSTANCE, $valueName, $matches):
+                return array($this->resolveInstance($matches[1]), null, 0);
+
+            case (!$classOnly && preg_match(self::CLASS_MEMBER, $valueName, $matches)):
+                return array($this->resolveName($matches[1]), $matches[2], Mirror::CONSTANT | Mirror::METHOD);
+
+            case (!$classOnly && preg_match(self::CLASS_STATIC, $valueName, $matches)):
+                return array($this->resolveName($matches[1]), $matches[2], Mirror::STATIC_PROPERTY | Mirror::PROPERTY);
+
+            case (!$classOnly && preg_match(self::INSTANCE_MEMBER, $valueName, $matches)):
+                if ($matches[2] === '->') {
+                    $kind = Mirror::METHOD | Mirror::PROPERTY;
+                } else {
+                    $kind = Mirror::CONSTANT | Mirror::METHOD;
+                }
+
+                return array($this->resolveInstance($matches[1]), $matches[3], $kind);
+
+            case (!$classOnly && preg_match(self::INSTANCE_STATIC, $valueName, $matches)):
+                return array($this->resolveInstance($matches[1]), $matches[2], Mirror::STATIC_PROPERTY);
+
+            default:
+                throw new RuntimeException('Unknown target: ' . $valueName);
+        }
+    }
+
+    /**
+     * Resolve a class or function name (with the current shell namespace).
+     *
+     * @param string $name
+     * @param bool   $includeFunctions (default: false)
+     *
+     * @return string
+     */
+    protected function resolveName($name, $includeFunctions = false)
+    {
+        if (substr($name, 0, 1) === '\\') {
+            return $name;
+        }
+
+        if ($namespace = $this->getApplication()->getNamespace()) {
+            $fullName = $namespace . '\\' . $name;
+
+            if (class_exists($fullName) || interface_exists($fullName) || ($includeFunctions && function_exists($fullName))) {
+                return $fullName;
+            }
+        }
+
+        return $name;
+    }
+
+    /**
+     * Get a Reflector and documentation for a function, class or instance, constant, method or property.
+     *
+     * @param string  $valueName Function, class, variable, constant, method or property name.
+     * @param boolean $classOnly True if the name should only refer to a class, function or instance
+     *
+     * @return array (value, Reflector)
+     */
+    protected function getTargetAndReflector($valueName, $classOnly = false)
+    {
+        list($value, $member, $kind) = $this->getTarget($valueName, $classOnly);
+
+        return array($value, Mirror::get($value, $member, $kind));
+    }
+
+    /**
+     * Return a variable instance from the current scope.
+     *
+     * @throws \InvalidArgumentException when the requested variable does not exist in the current scope.
+     *
+     * @param string $name
+     *
+     * @return mixed Variable instance.
+     */
+    protected function resolveInstance($name)
+    {
+        $value = $this->getScopeVariable($name);
+        if (!is_object($value)) {
+            throw new RuntimeException('Unable to inspect a non-object');
+        }
+
+        return $value;
+    }
+
+    /**
+     * Get a variable from the current shell scope.
+     *
+     * @param string $name
+     *
+     * @return mixed
+     */
+    protected function getScopeVariable($name)
+    {
+        return $this->context->get($name);
+    }
+
+    /**
+     * Get all scope variables from the current shell scope.
+     *
+     * @return array
+     */
+    protected function getScopeVariables()
+    {
+        return $this->context->getAll();
+    }
+}

vendor/psy/psysh/src/Psy/Command/ShowCommand.php

@@ -0,0 +1,63 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Exception\RuntimeException;
+use Psy\Formatter\CodeFormatter;
+use Psy\Formatter\SignatureFormatter;
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the code for an object, class, constant, method or property.
+ */
+class ShowCommand extends ReflectingCommand
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('show')
+            ->setDefinition(array(
+                new InputArgument('value', InputArgument::REQUIRED, 'Function, class, instance, constant, method or property to show.'),
+            ))
+            ->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.
+
+e.g.
+<return>>>> show \$myObject</return>
+<return>>>> show Psy\Shell::debug</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        list($value, $reflector) = $this->getTargetAndReflector($input->getArgument('value'));
+
+        try {
+            $output->page(CodeFormatter::format($reflector), ShellOutput::OUTPUT_RAW);
+        } catch (RuntimeException $e) {
+            $output->writeln(SignatureFormatter::format($reflector));
+            throw $e;
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/ThrowUpCommand.php

@@ -0,0 +1,87 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Context;
+use Psy\ContextAware;
+use Psy\Exception\ThrowUpException;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Throw an exception out of the Psy Shell.
+ */
+class ThrowUpCommand extends Command implements ContextAware
+{
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('throw-up')
+            ->setDefinition(array(
+                new InputArgument('exception', InputArgument::OPTIONAL, 'Exception to throw'),
+            ))
+            ->setDescription('Throw an exception out of the Psy Shell.')
+            ->setHelp(
+                <<<HELP
+Throws an exception out of the current the Psy Shell instance.
+
+By default it throws the most recent exception.
+
+e.g.
+<return>>>> throw-up</return>
+<return>>>> throw-up \$e</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws InvalidArgumentException if there is no exception to throw.
+     * @throws ThrowUpException         because what else do you expect it to do?
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        if ($name = $input->getArgument('exception')) {
+            $orig = $this->context->get(preg_replace('/^\$/', '', $name));
+        } else {
+            $orig = $this->context->getLastException();
+        }
+
+        if (!$orig instanceof \Exception) {
+            throw new \InvalidArgumentException('throw-up can only throw Exceptions');
+        }
+
+        throw new ThrowUpException($orig);
+    }
+}

vendor/psy/psysh/src/Psy/Command/TraceCommand.php

@@ -0,0 +1,137 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Output\ShellOutput;
+use Symfony\Component\Console\Formatter\OutputFormatter;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the current stack trace.
+ */
+class TraceCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('trace')
+            ->setDefinition(array(
+                new InputOption('include-psy', 'p', InputOption::VALUE_NONE,     'Include Psy in the call stack.'),
+                new InputOption('num',         'n', InputOption::VALUE_REQUIRED, 'Only include NUM lines.'),
+            ))
+            ->setDescription('Show the current call stack.')
+            ->setHelp(
+                <<<HELP
+Show the current call stack.
+
+Optionally, include PsySH in the call stack by passing the <info>--include-psy</info> option.
+
+e.g.
+<return>> trace -n10</return>
+<return>> trace --include-psy</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $trace = $this->getBacktrace(new \Exception(), $input->getOption('num'), $input->getOption('include-psy'));
+        $output->page($trace, ShellOutput::NUMBER_LINES | ShellOutput::OUTPUT_RAW);
+    }
+
+    /**
+     * Get a backtrace for an exception.
+     *
+     * Optionally limit the number of rows to include with $count, and exclude
+     * Psy from the trace.
+     *
+     * @param \Exception $e          The exception with a backtrace.
+     * @param int        $count      (default: PHP_INT_MAX)
+     * @param bool       $includePsy (default: true)
+     *
+     * @return array Formatted stacktrace lines.
+     */
+    protected function getBacktrace(\Exception $e, $count = null, $includePsy = true)
+    {
+        if ($cwd = getcwd()) {
+            $cwd = rtrim($cwd, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
+        }
+
+        if ($count === null) {
+            $count = PHP_INT_MAX;
+        }
+
+        $lines = array();
+
+        $trace = $e->getTrace();
+        array_unshift($trace, array(
+            'function' => '',
+            'file'     => $e->getFile() !== null ? $e->getFile() : 'n/a',
+            'line'     => $e->getLine() !== null ? $e->getLine() : 'n/a',
+            'args'     => array(),
+        ));
+
+        if (!$includePsy) {
+            for ($i = count($trace) - 1; $i >= 0; $i--) {
+                $thing = isset($trace[$i]['class']) ? $trace[$i]['class'] : $trace[$i]['function'];
+                if (preg_match('/\\\\?Psy\\\\/', $thing)) {
+                    $trace = array_slice($trace, $i + 1);
+                    break;
+                }
+            }
+        }
+
+        for ($i = 0, $count = min($count, count($trace)); $i < $count; $i++) {
+            $class    = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
+            $type     = isset($trace[$i]['type']) ? $trace[$i]['type'] : '';
+            $function = $trace[$i]['function'];
+            $file     = isset($trace[$i]['file']) ? $this->replaceCwd($cwd, $trace[$i]['file']) : 'n/a';
+            $line     = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a';
+
+            $lines[] = sprintf(
+                ' %s%s%s() at <info>%s:%s</info>',
+                OutputFormatter::escape($class),
+                OutputFormatter::escape($type),
+                OutputFormatter::escape($function),
+                OutputFormatter::escape($file),
+                OutputFormatter::escape($line)
+            );
+        }
+
+        return $lines;
+    }
+
+    /**
+     * Replace the given directory from the start of a filepath.
+     *
+     * @param string $cwd
+     * @param string $file
+     *
+     * @return string
+     */
+    private function replaceCwd($cwd, $file)
+    {
+        if ($cwd === false) {
+            return $file;
+        } else {
+            return preg_replace('/^' . preg_quote($cwd, '/') . '/', '', $file);
+        }
+    }
+}

vendor/psy/psysh/src/Psy/Command/WhereamiCommand.php

@@ -0,0 +1,115 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\PhpConsoleColor\ConsoleColor;
+use JakubOnderka\PhpConsoleHighlighter\Highlighter;
+use Psy\Output\ShellOutput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Show the context of where you opened the debugger.
+ */
+class WhereamiCommand extends Command
+{
+    public function __construct()
+    {
+        if (version_compare(PHP_VERSION, '5.3.6', '>=')) {
+            $this->backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+        } else {
+            $this->backtrace = debug_backtrace();
+        }
+
+        return parent::__construct();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('whereami')
+            ->setDefinition(array(
+                new InputOption('num', 'n', InputOption::VALUE_OPTIONAL, 'Number of lines before and after.', '5'),
+            ))
+            ->setDescription('Show where you are in the code.')
+            ->setHelp(
+                <<<HELP
+Show where you are in the code.
+
+Optionally, include how many lines before and after you want to display.
+
+e.g.
+<return>> whereami </return>
+<return>> whereami -n10</return>
+HELP
+            );
+    }
+
+    /**
+     * Obtains the correct trace in the full backtrace.
+     *
+     * @return array
+     */
+    protected function trace()
+    {
+        foreach ($this->backtrace as $i => $backtrace) {
+            if (!isset($backtrace['class'], $backtrace['function'])) {
+                continue;
+            }
+            $correctClass = $backtrace['class'] === 'Psy\Shell';
+            $correctFunction = $backtrace['function'] === 'debug';
+            if ($correctClass && $correctFunction) {
+                return $backtrace;
+            }
+        }
+
+        return end($this->backtrace);
+    }
+
+    /**
+     * Determine the file and line based on the specific backtrace.
+     *
+     * @return array
+     */
+    protected function fileInfo()
+    {
+        $backtrace = $this->trace();
+        if (preg_match('/eval\(/', $backtrace['file'])) {
+            preg_match_all('/([^\(]+)\((\d+)/', $backtrace['file'], $matches);
+            $file = $matches[1][0];
+            $line = (int) $matches[2][0];
+        } else {
+            $file = $backtrace['file'];
+            $line = $backtrace['line'];
+        }
+
+        return compact('file', 'line');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $info = $this->fileInfo();
+        $num = $input->getOption('num');
+        $colors = new ConsoleColor();
+        $colors->addTheme('line_number', array('blue'));
+        $highlighter = new Highlighter($colors);
+        $contents = file_get_contents($info['file']);
+        $output->page($highlighter->getCodeSnippet($contents, $info['line'], $num, $num), ShellOutput::OUTPUT_RAW);
+    }
+}

vendor/psy/psysh/src/Psy/Command/WtfCommand.php

@@ -0,0 +1,111 @@
+<?php
+
+/*
+ * This file is part of Psy Shell
+ *
+ * (c) 2012-2014 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\Context;
+use Psy\ContextAware;
+use Psy\Output\ShellOutput;
+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 last uncaught exception.
+ */
+class WtfCommand extends TraceCommand implements ContextAware
+{
+    /**
+     * Context instance (for ContextAware interface).
+     *
+     * @var Context
+     */
+    protected $context;
+
+    /**
+     * ContextAware interface.
+     *
+     * @param Context $context
+     */
+    public function setContext(Context $context)
+    {
+        $this->context = $context;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('wtf')
+            ->setAliases(array('last-exception', 'wtf?'))
+            ->setDefinition(array(
+                new InputArgument('incredulity', InputArgument::OPTIONAL | InputArgument::IS_ARRAY, 'Number of lines to show'),
+                new InputOption('verbose', 'v',  InputOption::VALUE_NONE, 'Show entire backtrace.'),
+            ))
+            ->setDescription('Show the backtrace of the most recent exception.')
+            ->setHelp(
+                <<<HELP
+Shows a few lines of the backtrace of the most recent exception.
+
+If you want to see more lines, add more question marks or exclamation marks:
+
+e.g.
+<return>>>> wtf ?</return>
+<return>>>> wtf ?!???!?!?</return>
+
+To see the entire backtrace, pass the -v/--verbose flag:
+
+e.g.
+<return>>>> wtf -v</return>
+HELP
+            );
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * --verbose is not hidden for this option :)
+     *
+     * @return array
+     */
+    protected function getHiddenOptions()
+    {
+        $options = parent::getHiddenOptions();
+        unset($options[array_search('verbose', $options)]);
+
+        return $options;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $incredulity = implode('', $input->getArgument('incredulity'));
+        if (strlen(preg_replace('/[\\?!]/', '', $incredulity))) {
+            throw new \InvalidArgumentException('Incredulity must include only "?" and "!".');
+        }
+
+        $exception = $this->context->getLastException();
+        $count     = $input->getOption('verbose') ? PHP_INT_MAX : pow(2, max(0, (strlen($incredulity) - 1)));
+        $trace     = $this->getBacktrace($exception, $count);
+
+        $shell = $this->getApplication();
+        $output->page(function ($output) use ($exception, $trace, $shell) {
+            $shell->renderException($exception, $output);
+            $output->writeln('--');
+            $output->write($trace, true, ShellOutput::NUMBER_LINES);
+        });
+    }
+}