133 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			133 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Symfony\Component\Console\Input;
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/**
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 * Represents a command line argument.
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 *
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 * @author Fabien Potencier <fabien@symfony.com>
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 *
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 * @api
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 */
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class InputArgument
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{
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    const REQUIRED = 1;
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    const OPTIONAL = 2;
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    const IS_ARRAY = 4;
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    private $name;
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    private $mode;
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    private $default;
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    private $description;
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    /**
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     * Constructor.
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     *
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     * @param string  $name        The argument name
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     * @param integer $mode        The argument mode: self::REQUIRED or self::OPTIONAL
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     * @param string  $description A description text
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     * @param mixed   $default     The default value (for self::OPTIONAL mode only)
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     *
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     * @throws \InvalidArgumentException When argument mode is not valid
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     *
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     * @api
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     */
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    public function __construct($name, $mode = null, $description = '', $default = null)
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    {
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        if (null === $mode) {
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            $mode = self::OPTIONAL;
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        } elseif (!is_int($mode) || $mode > 7 || $mode < 1) {
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            throw new \InvalidArgumentException(sprintf('Argument mode "%s" is not valid.', $mode));
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        }
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        $this->name        = $name;
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        $this->mode        = $mode;
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        $this->description = $description;
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        $this->setDefault($default);
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    }
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    /**
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     * Returns the argument name.
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     *
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     * @return string The argument name
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     */
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    public function getName()
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    {
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        return $this->name;
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    }
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    /**
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     * Returns true if the argument is required.
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     *
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     * @return Boolean true if parameter mode is self::REQUIRED, false otherwise
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     */
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    public function isRequired()
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    {
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        return self::REQUIRED === (self::REQUIRED & $this->mode);
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    }
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    /**
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     * Returns true if the argument can take multiple values.
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     *
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     * @return Boolean true if mode is self::IS_ARRAY, false otherwise
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     */
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    public function isArray()
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    {
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        return self::IS_ARRAY === (self::IS_ARRAY & $this->mode);
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    }
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    /**
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     * Sets the default value.
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     *
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     * @param mixed $default The default value
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     *
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     * @throws \LogicException When incorrect default value is given
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     */
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    public function setDefault($default = null)
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    {
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        if (self::REQUIRED === $this->mode && null !== $default) {
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            throw new \LogicException('Cannot set a default value except for InputArgument::OPTIONAL mode.');
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        }
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        if ($this->isArray()) {
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            if (null === $default) {
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                $default = array();
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            } elseif (!is_array($default)) {
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                throw new \LogicException('A default value for an array argument must be an array.');
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            }
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        }
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        $this->default = $default;
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    }
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    /**
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     * Returns the default value.
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     *
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     * @return mixed The default value
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     */
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    public function getDefault()
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    {
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        return $this->default;
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    }
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    /**
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     * Returns the description text.
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     *
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     * @return string The description text
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     */
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    public function getDescription()
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    {
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        return $this->description;
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    }
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}
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