KevinGH\Box\RequirementChecker\IO

Complexity

Total Complexity

31

Size/Duplication

Total Lines	171
Duplicated Lines	0 %

Importance

Changes

0

9 Methods

Rating	Name	Duplication	Size	Complexity
A	isInteractive()	0	3	1
A	getVerbosity()	0	3	1
A	__construct()	0	8	1
A	parseInput()	0	3	1
B	checkInteractivity()	0	17	6
A	hasParameter()	0	14	3
A	hasColorSupport()	0	3	1
B	checkColorSupport()	0	19	8
D	configureVerbosity()	0	37	9

<?php

/*
 * This file is part of the box project.
 *
 * (c) Kevin Herrera <kevin@herrera.io>
 *     Théo Fidry <theo.fidry@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace KevinGH\Box\RequirementChecker;

/**
 * The code in this file must be PHP 5.3+ compatible as is used to know if the application can be run.
 *
 * @private
 */
final class IO
{
    const VERBOSITY_QUIET = 16;
    const VERBOSITY_NORMAL = 32;
    const VERBOSITY_VERBOSE = 64;
    const VERBOSITY_VERY_VERBOSE = 128;
    const VERBOSITY_DEBUG = 256;

    private $interactive;
    private $verbosity = self::VERBOSITY_NORMAL;
    private $colorSupport;
    private $options;

    public function __construct()
    {
        $this->parseInput();

        $shellVerbosity = $this->configureVerbosity();

        $this->interactive = $this->checkInteractivity($shellVerbosity);
        $this->colorSupport = $this->checkColorSupport();
    }

    /**
     * @return bool
     */
    public function isInteractive()
    {
        return $this->interactive;
    }

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

    /**
     * @return bool
     */
    public function hasColorSupport()
    {
        return $this->colorSupport;
    }

    /**
     * {@inheritdoc}
     */
    public function hasParameter($values)
    {
        $values = (array) $values;

        foreach ($values as $value) {
            $regexp = sprintf(
                '/\s%s\b/',
                str_replace(' ', '\s+', preg_quote($value, '/'))
            );
            if (preg_match($regexp, $this->options) === 1) {
                return true;
            }
        }
        return false;
    }

    /**
     * @return array
     */
    private function parseInput()
    {
        $this->options = implode(' ', $_SERVER['argv']);
    }

    /**
     * @param int $shellVerbosity
     *
     * @return bool
     */
    private function checkInteractivity($shellVerbosity)
    {
        if (-1 === $shellVerbosity) {
            return false;
        }

        if (true === $this->hasParameter(array('--no-interaction', '-n'))) {
            return false;
        }

        if (function_exists('posix_isatty')) {
            if (!@posix_isatty(STDOUT) && false === getenv('SHELL_INTERACTIVE')) {
                return false;
            }
        }

        return true;
    }

    /**
     * @return int
     */
    private function configureVerbosity()
    {
        switch ($shellVerbosity = (int) getenv('SHELL_VERBOSITY')) {
            case -1:
                $this->verbosity = self::VERBOSITY_QUIET;
                break;
            case 1:
                $this->verbosity = self::VERBOSITY_VERBOSE;
                break;
            case 2:
                $this->verbosity = self::VERBOSITY_VERY_VERBOSE;
                break;
            case 3:
                $this->verbosity = self::VERBOSITY_DEBUG;
                break;
            default:
                $shellVerbosity = 0;
                break;
        }

        if ($this->hasParameter(array('--quiet', '-q'))) {
            $this->verbosity = self::VERBOSITY_QUIET;
            $shellVerbosity = -1;
        } else {
            if ($this->hasParameter(array('-vvv', '--verbose=3', '--verbose 3'))) {
                $this->verbosity = self::VERBOSITY_DEBUG;
                $shellVerbosity = 3;
            } elseif ($this->hasParameter(array('-vv', '--verbose=2', '--verbose 2'))) {
                $this->verbosity = self::VERBOSITY_VERY_VERBOSE;
                $shellVerbosity = 2;
            } elseif ($this->hasParameter(array('-v', '--verbose=1', '--verbose 1', '--verbose'))) {
                $this->verbosity = self::VERBOSITY_VERBOSE;
                $shellVerbosity = 1;
            }
        }

        return $shellVerbosity;
    }

    /**
     * Returns true if the stream supports colorization.
     *
     * Colorization is disabled if not supported by the stream:
     *
     *  -  Windows != 10.0.10586 without Ansicon, ConEmu or Mintty
     *  -  non tty consoles
     *
     * @return bool true if the stream supports colorization, false otherwise
     *
     * @see \Symfony\Component\Console\Output\StreamOutput
     */
    private function checkColorSupport()
    {
        if ($this->hasParameter(array('--ansi'))) {
            return true;
        }

        if ($this->hasParameter(array('--no-ansi'))) {
            return false;
        }

        if (DIRECTORY_SEPARATOR === '\\') {
            return
                '10.0.10586' === PHP_WINDOWS_VERSION_MAJOR . '.' . PHP_WINDOWS_VERSION_MINOR . '.' . PHP_WINDOWS_VERSION_BUILD
                || false !== getenv('ANSICON')
                || 'ON' === getenv('ConEmuANSI')
                || 'xterm' === getenv('TERM');
        }

        return function_exists('posix_isatty') && @posix_isatty(STDOUT);
    }
}