framework/library/think/console/Output.php

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2015 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------

namespace think\console;

use Exception;
use think\console\output\Descriptor;
use think\console\output\driver\Buffer;
use think\console\output\driver\Console;
use think\console\output\driver\Nothing;

class Output
{
    const VERBOSITY_QUIET        = 0;
    const VERBOSITY_NORMAL       = 1;
    const VERBOSITY_VERBOSE      = 2;
    const VERBOSITY_VERY_VERBOSE = 3;
    const VERBOSITY_DEBUG        = 4;

    const OUTPUT_NORMAL = 0;
    const OUTPUT_RAW    = 1;
    const OUTPUT_PLAIN  = 2;

    private $verbosity = self::VERBOSITY_NORMAL;

    /** @var Buffer|Console|Nothing */
    private $handle = null;

    public function __construct($driver = 'console')
    {
        $class = '\\think\\console\\output\\driver\\' . ucwords($driver);

        $this->handle = new $class($this);
    }

    public function writeln($messages, $type = self::OUTPUT_NORMAL)
    {
        $this->write($messages, true, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function write($messages, $newline = false, $type = self::OUTPUT_NORMAL)
    {
        $this->handle->write($messages, $newline, $type);
    }

    public function renderException(\Exception $e)
    {
        $this->handle->renderException($e);
    }

    /**
     * {@inheritdoc}
     */
    public function setVerbosity($level)
    {
        $this->verbosity = (int) $level;
    }

    /**
     * {@inheritdoc}
     */
    public function getVerbosity()
    {
        return $this->verbosity;
    }

    public function isQuiet()
    {
        return self::VERBOSITY_QUIET === $this->verbosity;
    }

    public function isVerbose()
    {
        return self::VERBOSITY_VERBOSE <= $this->verbosity;
    }

    public function isVeryVerbose()
    {
        return self::VERBOSITY_VERY_VERBOSE <= $this->verbosity;
    }

    public function isDebug()
    {
        return self::VERBOSITY_DEBUG <= $this->verbosity;
    }

    public function describe($object, array $options = [])
    {
        $descriptor = new Descriptor();
        $options    = array_merge([
            'raw_text' => false,
        ], $options);

        $descriptor->describe($this, $object, $options);
    }

    public function __call($method, $args)
    {
        if ($this->handle && method_exists($this->handle, $method)) {
            return call_user_func_array([$this->handle, $method], $args);
        } else {
            throw new Exception('method not exists:' . __CLASS__ . '->' . $method);
        }
    }

}