--- /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\Input;
+
+use Symfony\Component\Console\Input\InputDefinition;
+use Symfony\Component\Console\Input\StringInput;
+
+/**
+ * A StringInput subclass specialized for code arguments.
+ */
+class ShellInput extends StringInput
+{
+ private $hasCodeArgument = false;
+
+ /**
+ * Unlike the parent implementation's tokens, this contains an array of
+ * token/rest pairs, so that code arguments can be handled while parsing.
+ */
+ private $tokenPairs;
+ private $parsed;
+
+ /**
+ * Constructor.
+ *
+ * @param string $input An array of parameters from the CLI (in the argv format)
+ */
+ public function __construct($input)
+ {
+ parent::__construct($input);
+
+ $this->tokenPairs = $this->tokenize($input);
+ }
+
+ /**
+ * {@inheritdoc}
+ *
+ * @throws \InvalidArgumentException if $definition has CodeArgument before the final argument position
+ */
+ public function bind(InputDefinition $definition)
+ {
+ $hasCodeArgument = false;
+
+ if ($definition->getArgumentCount() > 0) {
+ $args = $definition->getArguments();
+ $lastArg = array_pop($args);
+ foreach ($args as $arg) {
+ if ($arg instanceof CodeArgument) {
+ $msg = sprintf('Unexpected CodeArgument before the final position: %s', $arg->getName());
+ throw new \InvalidArgumentException($msg);
+ }
+ }
+
+ if ($lastArg instanceof CodeArgument) {
+ $hasCodeArgument = true;
+ }
+ }
+
+ $this->hasCodeArgument = $hasCodeArgument;
+
+ return parent::bind($definition);
+ }
+
+ /**
+ * Tokenizes a string.
+ *
+ * The version of this on StringInput is good, but doesn't handle code
+ * arguments if they're at all complicated. This does :)
+ *
+ * @param string $input The input to tokenize
+ *
+ * @return array An array of token/rest pairs
+ *
+ * @throws \InvalidArgumentException When unable to parse input (should never happen)
+ */
+ private function tokenize($input)
+ {
+ $tokens = array();
+ $length = strlen($input);
+ $cursor = 0;
+ while ($cursor < $length) {
+ if (preg_match('/\s+/A', $input, $match, null, $cursor)) {
+ } elseif (preg_match('/([^="\'\s]+?)(=?)(' . StringInput::REGEX_QUOTED_STRING . '+)/A', $input, $match, null, $cursor)) {
+ $tokens[] = array(
+ $match[1] . $match[2] . stripcslashes(str_replace(array('"\'', '\'"', '\'\'', '""'), '', substr($match[3], 1, strlen($match[3]) - 2))),
+ substr($input, $cursor),
+ );
+ } elseif (preg_match('/' . StringInput::REGEX_QUOTED_STRING . '/A', $input, $match, null, $cursor)) {
+ $tokens[] = array(
+ stripcslashes(substr($match[0], 1, strlen($match[0]) - 2)),
+ substr($input, $cursor),
+ );
+ } elseif (preg_match('/' . StringInput::REGEX_STRING . '/A', $input, $match, null, $cursor)) {
+ $tokens[] = array(
+ stripcslashes($match[1]),
+ substr($input, $cursor),
+ );
+ } else {
+ // should never happen
+ throw new \InvalidArgumentException(sprintf('Unable to parse input near "... %s ..."', substr($input, $cursor, 10)));
+ }
+
+ $cursor += strlen($match[0]);
+ }
+
+ return $tokens;
+ }
+
+ /**
+ * Same as parent, but with some bonus handling for code arguments.
+ */
+ protected function parse()
+ {
+ $parseOptions = true;
+ $this->parsed = $this->tokenPairs;
+ while (null !== $tokenPair = array_shift($this->parsed)) {
+ // token is what you'd expect. rest is the remainder of the input
+ // string, including token, and will be used if this is a code arg.
+ list($token, $rest) = $tokenPair;
+
+ if ($parseOptions && '' === $token) {
+ $this->parseShellArgument($token, $rest);
+ } elseif ($parseOptions && '--' === $token) {
+ $parseOptions = false;
+ } elseif ($parseOptions && 0 === strpos($token, '--')) {
+ $this->parseLongOption($token);
+ } elseif ($parseOptions && '-' === $token[0] && '-' !== $token) {
+ $this->parseShortOption($token);
+ } else {
+ $this->parseShellArgument($token, $rest);
+ }
+ }
+ }
+
+ /**
+ * Parses an argument, with bonus handling for code arguments.
+ *
+ * @param string $token The current token
+ * @param string $rest The remaining unparsed input, including the current token
+ *
+ * @throws \RuntimeException When too many arguments are given
+ */
+ private function parseShellArgument($token, $rest)
+ {
+ $c = count($this->arguments);
+
+ // if input is expecting another argument, add it
+ if ($this->definition->hasArgument($c)) {
+ $arg = $this->definition->getArgument($c);
+
+ if ($arg instanceof CodeArgument) {
+ // When we find a code argument, we're done parsing. Add the
+ // remaining input to the current argument and call it a day.
+ $this->parsed = array();
+ $this->arguments[$arg->getName()] = $rest;
+ } else {
+ $this->arguments[$arg->getName()] = $arg->isArray() ? array($token) : $token;
+ }
+
+ // if last argument isArray(), append token to last argument
+ } elseif ($this->definition->hasArgument($c - 1) && $this->definition->getArgument($c - 1)->isArray()) {
+ $arg = $this->definition->getArgument($c - 1);
+ $this->arguments[$arg->getName()][] = $token;
+
+ // unexpected argument
+ } else {
+ $all = $this->definition->getArguments();
+ if (count($all)) {
+ throw new \RuntimeException(sprintf('Too many arguments, expected arguments "%s".', implode('" "', array_keys($all))));
+ }
+
+ throw new \RuntimeException(sprintf('No arguments expected, got "%s".', $token));
+ }
+ }
+
+ // Everything below this is copypasta from ArgvInput private methods
+
+ /**
+ * Parses a short option.
+ *
+ * @param string $token The current token
+ */
+ private function parseShortOption($token)
+ {
+ $name = substr($token, 1);
+
+ if (strlen($name) > 1) {
+ if ($this->definition->hasShortcut($name[0]) && $this->definition->getOptionForShortcut($name[0])->acceptValue()) {
+ // an option with a value (with no space)
+ $this->addShortOption($name[0], substr($name, 1));
+ } else {
+ $this->parseShortOptionSet($name);
+ }
+ } else {
+ $this->addShortOption($name, null);
+ }
+ }
+
+ /**
+ * Parses a short option set.
+ *
+ * @param string $name The current token
+ *
+ * @throws \RuntimeException When option given doesn't exist
+ */
+ private function parseShortOptionSet($name)
+ {
+ $len = strlen($name);
+ for ($i = 0; $i < $len; ++$i) {
+ if (!$this->definition->hasShortcut($name[$i])) {
+ throw new \RuntimeException(sprintf('The "-%s" option does not exist.', $name[$i]));
+ }
+
+ $option = $this->definition->getOptionForShortcut($name[$i]);
+ if ($option->acceptValue()) {
+ $this->addLongOption($option->getName(), $i === $len - 1 ? null : substr($name, $i + 1));
+
+ break;
+ } else {
+ $this->addLongOption($option->getName(), null);
+ }
+ }
+ }
+
+ /**
+ * Parses a long option.
+ *
+ * @param string $token The current token
+ */
+ private function parseLongOption($token)
+ {
+ $name = substr($token, 2);
+
+ if (false !== $pos = strpos($name, '=')) {
+ if (0 === strlen($value = substr($name, $pos + 1))) {
+ // if no value after "=" then substr() returns "" since php7 only, false before
+ // see http://php.net/manual/fr/migration70.incompatible.php#119151
+ if (PHP_VERSION_ID < 70000 && false === $value) {
+ $value = '';
+ }
+ array_unshift($this->parsed, array($value, null));
+ }
+ $this->addLongOption(substr($name, 0, $pos), $value);
+ } else {
+ $this->addLongOption($name, null);
+ }
+ }
+
+ /**
+ * Adds a short option value.
+ *
+ * @param string $shortcut The short option key
+ * @param mixed $value The value for the option
+ *
+ * @throws \RuntimeException When option given doesn't exist
+ */
+ private function addShortOption($shortcut, $value)
+ {
+ if (!$this->definition->hasShortcut($shortcut)) {
+ throw new \RuntimeException(sprintf('The "-%s" option does not exist.', $shortcut));
+ }
+
+ $this->addLongOption($this->definition->getOptionForShortcut($shortcut)->getName(), $value);
+ }
+
+ /**
+ * Adds a long option value.
+ *
+ * @param string $name The long option key
+ * @param mixed $value The value for the option
+ *
+ * @throws \RuntimeException When option given doesn't exist
+ */
+ private function addLongOption($name, $value)
+ {
+ if (!$this->definition->hasOption($name)) {
+ throw new \RuntimeException(sprintf('The "--%s" option does not exist.', $name));
+ }
+
+ $option = $this->definition->getOption($name);
+
+ if (null !== $value && !$option->acceptValue()) {
+ throw new \RuntimeException(sprintf('The "--%s" option does not accept a value.', $name));
+ }
+
+ if (in_array($value, array('', null), true) && $option->acceptValue() && count($this->parsed)) {
+ // if option accepts an optional or mandatory argument
+ // let's see if there is one provided
+ $next = array_shift($this->parsed);
+ $nextToken = $next[0];
+ if ((isset($nextToken[0]) && '-' !== $nextToken[0]) || in_array($nextToken, array('', null), true)) {
+ $value = $nextToken;
+ } else {
+ array_unshift($this->parsed, $next);
+ }
+ }
+
+ if (null === $value) {
+ if ($option->isValueRequired()) {
+ throw new \RuntimeException(sprintf('The "--%s" option requires a value.', $name));
+ }
+
+ if (!$option->isArray() && !$option->isValueOptional()) {
+ $value = true;
+ }
+ }
+
+ if ($option->isArray()) {
+ $this->options[$name][] = $value;
+ } else {
+ $this->options[$name] = $value;
+ }
+ }
+}
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