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LessStrictArgvInput.php
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LessStrictArgvInput.php
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<?php
namespace Drush\Symfony;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Exception\RuntimeException;
/**
* UnvalidatedArgvInput is an ArgvInput that never reports errors when
* extra options are provided.
*
* If the last argument of the command being called is not an array
* argument, then an error will be thrown if there are too many arguments.
*
* We use this instead of a IndiscriminateInputDefinition in cases where we
* know in advance that we wish to disable input validation for all commands.
* In contrast, an IndiscriminateInputDefinition is attached to individual
* Commands that should accept any option.
*/
class LessStrictArgvInput extends ArgvInput
{
private $tokens;
private $parsed;
protected $additionalOptions = [];
/**
* Constructor.
*
* @param array|null $argv An array of parameters from the CLI (in the argv format)
* @param InputDefinition|null $definition A InputDefinition instance
*/
public function __construct(array $argv = null, InputDefinition $definition = null)
{
// We have to duplicate the implementation of ArgvInput
// because of liberal use of `private`
if (null === $argv) {
$argv = $_SERVER['argv'];
}
$this->tokens = $argv;
// strip the application name
array_shift($this->tokens);
parent::__construct($argv, $definition);
}
/**
* {@inheritdoc}
*/
public function getOption($name)
{
if (array_key_exists($name, $this->options)) {
return $this->options[$name];
}
if ($this->definition->hasOption($name)) {
return $this->definition->getOption($name)->getDefault();
}
return false;
}
protected function setTokens(array $tokens): void
{
$this->tokens = $tokens;
}
/**
* {@inheritdoc}
*/
protected function parse(): void
{
$parseOptions = true;
$this->parsed = $this->tokens;
while (null !== $token = array_shift($this->parsed)) {
if ($parseOptions && '' == $token) {
$this->parseArgument($token);
} elseif ($parseOptions && '--' == $token) {
$parseOptions = false;
} elseif ($parseOptions && 0 === strpos($token, '--')) {
$this->parseLongOption($token);
} elseif ($parseOptions && '-' === $token[0] && '-' !== $token) {
$this->parseShortOption($token);
} else {
$this->parseArgument($token);
}
}
// Put back any options that were injected.
$this->options += $this->additionalOptions;
}
/**
* Parses a short option.
*
* @param string $token The current token
*/
private function parseShortOption($token): void
{
$name = substr($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 $name The current token
*/
private function parseShortOptionSet($name): void
{
$len = strlen($name);
for ($i = 0; $i < $len; ++$i) {
if (!$this->definition->hasShortcut($name[$i])) {
$this->addShortOption($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): void
{
$name = substr($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, $value);
}
$this->addLongOption(substr($name, 0, $pos), $value);
} else {
$this->addLongOption($name, null);
}
}
/**
* Parses an argument.
*
* @param string $token The current token
*
* @throws RuntimeException When too many arguments are given
*/
private function parseArgument($token): void
{
$c = count($this->arguments);
// if input is expecting another argument, add it
if ($this->definition->hasArgument($c)) {
$arg = $this->definition->getArgument($c);
$this->arguments[$arg->getName()] = $arg->isArray() ? [$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", provided arguments "%s".', implode('" "', array_keys($all)), implode('" "', array_keys($this->arguments))));
}
throw new RuntimeException(sprintf('No arguments expected, got "%s".', $token));
}
}
/**
* 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, $value): void
{
if (!$this->definition->hasShortcut($shortcut)) {
// Hard to know what to do with unknown short options. Maybe
// these should be added to the end of the arguments. This would only
// be a good strategy if the last argument was an array argument.
// We'll try adding as a long option for now.
$this->addLongOption($shortcut, $value);
}
$this->addLongOption($this->definition->getOptionForShortcut($shortcut)->getName(), $value);
}
public function injectAdditionalOptions($additionalOptions): void
{
$this->additionalOptions += $additionalOptions;
$this->options += $additionalOptions;
}
/**
* 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, $value): void
{
if (!$this->definition->hasOption($name)) {
// If we don't know anything about this option, then we'll
// assume it is generic.
$this->options[$name] = $value;
return;
}
$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, ['', 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);
if ((isset($next[0]) && '-' !== $next[0]) || in_array($next, ['', null], true)) {
$value = $next;
} else {
array_unshift($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] = $value;
}
}
/**
* {@inheritdoc}
*/
public function getFirstArgument()
{
foreach ($this->tokens as $token) {
if ($token && '-' === $token[0]) {
continue;
}
return $token;
}
}
/**
* {@inheritdoc}
*/
public function hasParameterOption($values, $onlyParams = false): bool
{
$values = (array) $values;
foreach ($this->tokens as $token) {
if ($onlyParams && $token === '--') {
return false;
}
foreach ($values as $value) {
if ($token === $value || 0 === strpos($token, $value . '=')) {
return true;
}
}
}
return false;
}
/**
* {@inheritdoc}
*/
public function getParameterOption($values, $default = false, $onlyParams = false)
{
$values = (array) $values;
$tokens = $this->tokens;
while (0 < count($tokens)) {
$token = array_shift($tokens);
if ($onlyParams && $token === '--') {
return false;
}
foreach ($values as $value) {
if ($token === $value || 0 === strpos($token, $value . '=')) {
if (false !== $pos = strpos($token, '=')) {
return substr($token, $pos + 1);
}
return array_shift($tokens);
}
}
}
return $default;
}
/**
* Returns a stringified representation of the args passed to the command.
*
* @return string
*/
public function __toString()
{
$tokens = array_map(function ($token) {
if (preg_match('{^(-[^=]+=)(.+)}', $token, $match)) {
return $match[1] . $this->escapeToken($match[2]);
}
if ($token && $token[0] !== '-') {
return $this->escapeToken($token);
}
return $token;
}, $this->tokens);
return implode(' ', $tokens);
}
}