Source of file Request.php

<?php

/**

 * Base Request

 *

 * @category    PHP

 * @package     MvcLite

 * @subpackage  Request

 * @since       File available since release 1.0.1

 * @author      Cory Collier <corycollier@corycollier.com>

 */

namespace MvcLite;

use MvcLite\Traits\Singleton as SingletonTrait;

use MvcLite\Traits\FilterChain as FilterChainTrait;

/**

 * Base Request

 *

 * @category    PHP

 * @package     MvcLite

 * @subpackage  Request

 * @since       Class available since release 1.0.1

 * @author      Cory Collier <corycollier@corycollier.com>

 */

class Request extends ObjectAbstract

{

    use SingletonTrait;

    use FilterChainTrait;

    /**

     * Constants

     */

    const ERR_BAD_CONTENT_TYPE = 'Content type [%s] not recognized';

    /**

     * associative array representing the request params

     *

     * @var array

     */

    protected $params = [];

    /**

     * associative array of the headers sent from the client

     *

     * @var array

     */

    protected $headers = [];

    /**

     * stores the original request uri

     *

     * @var string

     */

    protected $uri;

    /**

     * method to start the request up

     */

    public function init()

    {

        $this->uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '';

        $this->params = array_merge($this->params, $_COOKIE);

        $this->params = array_merge($this->params, $_POST);

        $this->params = array_merge($this->params, $_GET);

        $this->setHeaders($_SERVER);

        $this->setParams($this->buildFromString(@$_GET['q']));

    }

    /**

     *

     * Method to set the headers.

     *

     * @return MvcLite\Request Returns $this, for object-chaining.

     */

    public function setHeaders($headers = [])

    {

        // Create the filter chain to transform _SERVER to headers.

        $filter = $this->getFilterChain([

            'UnderscoreToDash',

            'StringtoLower',

        ]);

        $filter->addFilter(new Filter\SeparatorToUcwords('-'));

        // iterate over the $_SERVER superglobal values.

        foreach ($headers as $key => $value) {

            if (substr($key, 0, 5) != 'HTTP_') {

                continue;

            }

            $key = $filter->filter($key);

            $key = strtr($key, ['Http-' => '']);

            $this->setHeader($key, $value);

        }

        if (isset($headers['CONTENT_TYPE'])) {

            $this->setHeader('Content-Type', $headers['CONTENT_TYPE']);

        }

        return $this;

    }

    /**

     * Sets a single header

     *

     * @param string $name The name of the header to set.

     * @param string $value The value of the header.

     *

     * @return MvcLite\Request Returns $this, for object-chaining.

     */

    public function setHeader($name, $value)

    {

        $this->headers[$name] = $value;

        return $this;

    }

    /**

     * Build an associative array from a string

     *

     * @param string $string

     * @param string $separator

     * @return array

     */

    public function buildFromString($string = '', $separator = '/')

    {

        global $argv;

        // create a list of parts by separator

        $parts = array_filter(explode($separator, $string));

        if (!$parts && PHP_SAPI == 'cli') {

            $parts = $argv;

            array_shift($parts);

        }

        $controller = array_shift($parts);

        $action = array_shift($parts);

        $results = [

            'controller' => $controller ? $controller : 'index',

            'action'     => $action ? $action : 'index',

        ];

        $length = count($parts);

        $i = 0;

        while ($i < $length) {

            if (array_key_exists($i + 1, $parts)) {

                $key = $parts[$i];

                $value = $parts[$i + 1];

                if (in_array($key, ['controller', 'action'])) {

                    if ($i <= 2) {

                        $i = $i + 2;

                    }

                    continue;

                }

                $results[$key] = $value;

            }

            $i = $i + 2;

        }

        return $results;

    }

    /**

     * setter for the params property

     *

     * @param $params

     * @return Request $this for object-chaining.

     */

    public function setParams($params = [])

    {

        $this->params = array_merge($this->params, (array)$params);

        return $this;

    }

    /**

     * getter for the params property

     *

     * @return array All of the request params (_GET, _POST, and _COOKIE)

     */

    public function getParams()

    {

        $params = $this->params;

        foreach ($params as $key => $value) {

            if (! $key || ! $value || $key === 'q') {

                unset($params[$key]);

            }

        }

        return $params;

    }

    /**

     * Gets a single param from the params array

     *

     * @param string $param

     * @return string

     */

    public function getParam($param)

    {

        if (array_key_exists($param, $this->params)) {

            return $this->params[$param];

        }

    }

    /**

     * method to set a param manually

     *

     * @param string $param

     * @param string $value

     * @return Request $this for object-chaining.

     */

    public function setParam($param, $value = '')

    {

        $this->params[$param] = $value;

        return $this;

    }

    /**

     * Determines if the request is post or not

     *

     * @return boolean

     */

    public function isPost()

    {

        // if there is data in the _post property, return true

        if (count($_POST)) {

            return true;

        }

        return false;

    }

    /**

     * getter for the headers property

     *

     * @return array

     */

    public function getHeaders()

    {

        return $this->headers;

    }

    /**

     * method to get the value for a single header

     *

     * @param string $header

     */

    public function getHeader($header = '')

    {

        return @$this->headers[$header];

    }

    /**

     * Method to indicate whether the current request is AJAX or not

     *

     * @return boolean

     */

    public function isAjax()

    {

        // if the request is ajax, don't load the layout

        if ($this->getHeader('X-Requested-With') == 'XMLHttpRequest') {

            return true;

        }

        return false;

    }

    /**

     * getter for the uri value

     *

     * @return string

     */

    public function getUri()

    {

        return $this->uri;

    }

    /**

     * Getter for the content type of the request.

     *

     * @return string The content type.

     */

    public function getContentType()

    {

        $contentType = $this->getHeader('Content-Type');

        $contentType = trim(explode(';', $contentType)[0]);

        if (! $contentType) {

            $accept = $this->getHeader('Accept');

            $parts = explode(',', $accept);

            $contentType = $parts[0];

        }

        if (! $contentType && PHP_SAPI == 'cli') {

            return 'text/plain';

        }

        return $contentType ? $contentType : 'text/html';

    }

    /**

     * Gets a friendly version of the format.

     *

     * @param string $contentType The raw content type.

     *

     * @return string The machine friendly name for the request type (aka Format).

     */

    public function getFormat($contentType)

    {

        $map = [

            'application/json'       => 'json',

            'application/javascript' => 'json',

            'text/html'              => 'html',

            'text/plain'             => 'text',

            'text/csv'               => 'csv',

            '*/*'                    => 'json',

        ];

        if (!array_key_exists($contentType, $map)) {

            throw new Exception(sprintf(self::ERR_BAD_CONTENT_TYPE, $contentType));

        }

        return $map[$contentType];

    }

}