DebugLogger.php

<?php

/**
 * Vips is a php binding for the vips image processing library
 *
 * PHP version 7
 *
 * LICENSE:
 *
 * Copyright (c) 2016 John Cupitt
 *
 * 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.
 *
 * @category  Images
 * @package   Jcupitt\Vips
 * @author    John Cupitt <jcupitt@gmail.com>
 * @copyright 2016 John Cupitt
 * @license   https://opensource.org/licenses/MIT MIT
 * @link      https://github.com/jcupitt/php-vips
 */

namespace Jcupitt\Vips;

use Psr\Log\LoggerInterface;
use Psr\Log\LoggerTrait;

const LOG_FORMAT = "[%datetime%] %level_name%: %message% %context%\n";
const DATE_FORMAT = "Y-m-d\TH:i:sP";

/**
 * A simple logger, handy for debugging. See Main::setLogger().
 *
 * @category  Images
 * @package   Jcupitt\Vips
 * @author    John Cupitt <jcupitt@gmail.com>
 * @copyright 2016 John Cupitt
 * @license   https://opensource.org/licenses/MIT MIT
 * @link      https://github.com/jcupitt/php-vips
 */
class DebugLogger implements LoggerInterface
{
    // Use the LoggerTrait so that we only have to implement the generic
    // log method.
    use LoggerTrait;

    /**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     * @param array  $context
     *
     * @return void
     */
    public function log($level, $message, array $context = [])
    {
        // `Vips\Image` to string convert
        array_walk_recursive($context, function (&$value) {
            if ($value instanceof Image) {
                $value = (string) $value;
            }
        });

        $strParams = [
            '%datetime%' => date(DATE_FORMAT),
            '%level_name%' => $level,
            '%message%' => $message,
            '%context%' => json_encode(
                $context,
                JSON_UNESCAPED_SLASHES |
                JSON_UNESCAPED_UNICODE |
                JSON_PRESERVE_ZERO_FRACTION
            ),
        ];

        echo strtr(LOG_FORMAT, $strParams);
    }
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: expandtab sw=4 ts=4 fdm=marker
 * vim<600: expandtab sw=4 ts=4
 */