<?php
/**
 * Slim - a micro PHP 5 framework
 *
 * @author      Josh Lockhart <info@slimframework.com>
 * @copyright   2011 Josh Lockhart
 * @link        http://www.slimframework.com
 * @license     http://www.slimframework.com/license
 * @version     2.2.0
 * @package     Slim
 *
 * MIT LICENSE
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
namespace Slim;

/**
 * Log Writer
 *
 * This class is used by Slim_Log to write log messages to a valid, writable
 * resource handle (e.g. a file or STDERR).
 *
 * @package Slim
 * @author  Josh Lockhart
 * @since   1.6.0
 */
class LogWriter
{
    /**
     * @var resource
     */
    protected $resource;

    /**
     * Constructor
     * @param  resource                  $resource
     * @throws \InvalidArgumentException If invalid resource
     */
    public function __construct($resource)
    {
        if (!is_resource($resource)) {
            throw new \InvalidArgumentException('Cannot create LogWriter. Invalid resource handle.');
        }
        $this->resource = $resource;
    }

    /**
     * Write message
     * @param  mixed     $message
     * @param  int       $level
     * @return int|false
     */
    public function write($message, $level = null)
    {
        return fwrite($this->resource, (string) $message . PHP_EOL);
    }
}
