--- /dev/null
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command;
+
+use 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 $pattern
+ *
+ * @return bool
+ */
+ private function validateRegex($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);
+ }
+}
projects / yaffs-website / blobdiff