phpbu\App\Util\Cli

Complexity

Total Complexity

32

Size/Duplication

Total Lines	260
Duplicated Lines	0 %

Coupling/Cohesion

Components	3
Dependencies	0

Test Coverage

Coverage

96.34%

Importance

Changes

0

12 Methods

Rating	Name	Duplication	Size	Complexity
A	addCommandLocation()	0	4	1
A	getCommandLocations()	0	4	2
A	detectCmdLocationWithWhich()	0	11	2
A	getEnvPath()	0	10	3
A	isExecutable()	0	14	4
B	detectCmdLocation()	0	30	4
A	detectCmdLocationInPath()	0	9	2
A	detectCmdLocationInPaths()	0	11	3
A	formatWithColor()	0	19	4
A	formatWithAsterisk()	0	4	1
A	canPipe()	0	4	1
B	removeDir()	0	14	5

<?php
namespace phpbu\App\Util;

use RuntimeException;

/**
 * Cli utility
 *
 * @package    phpbu
 * @subpackage Util
 * @author     Sebastian Feldmann <sebastian@phpbu.de>
 * @copyright  Sebastian Feldmann <sebastian@phpbu.de>
 * @license    https://opensource.org/licenses/MIT The MIT License (MIT)
 * @link       http://phpbu.de/
 * @since      Class available since Release 1.0.0
 */
abstract class Cli
{
    /**
     * List of console color codes.
     *
     * @var array
     */
    private static $ansiCodes = [
        'bold'       => 1,
        'fg-black'   => 30,
        'fg-red'     => 31,
        'fg-green'   => 32,
        'fg-yellow'  => 33,
        'fg-cyan'    => 36,
        'fg-white'   => 37,
        'bg-red'     => 41,
        'bg-green'   => 42,
        'bg-yellow'  => 43
    ];

    /**
     * Optional command locations
     *
     * @var array
     */
    private static $optionalCommandLocations = [
        'mongodump' => [],
        'mysqldump' => [
            '/usr/local/mysql/bin', // Mac OS X
            '/usr/mysql/bin',       // Linux
        ],
        'tar'       => [],
    ];

    /**
     * Adds a new 'path' to the list of optional command locations.
     *
     * @param string $command
     * @param string $path
     */
    public static function addCommandLocation($command, $path)
    {
        self::$optionalCommandLocations[$command][] = $path;
    }

    /**
     * Returns the list of optional 'mysqldump' locations.
     *
     * @param  string $command
     * @return array
     */
    public static function getCommandLocations($command) : array
    {
        return isset(self::$optionalCommandLocations[$command]) ? self::$optionalCommandLocations[$command] : [];
    }

    /**
     * Detect a given command's location.
     *
     * @param  string $cmd               The command to locate
     * @param  string $path              Directory where the command should be
     * @param  array  $optionalLocations Some fallback locations where to search for the command
     * @return string                    Absolute path to detected command including command itself
     * @throws \RuntimeException
     */
    public static function detectCmdLocation(string $cmd, string $path = '', array $optionalLocations = []) : string
    {
        $detectionSteps = [
            function($cmd) use ($path) {
                if (!empty($path)) {
                    return self::detectCmdLocationInPath($cmd, $path);
                }
                return '';
            },
            function($cmd) {
                return self::detectCmdLocationWithWhich($cmd);
            },
            function($cmd) {
                $paths = explode(PATH_SEPARATOR, self::getEnvPath());
                return self::detectCmdLocationInPaths($cmd, $paths);
            },
            function($cmd) use ($optionalLocations) {
                return self::detectCmdLocationInPaths($cmd, $optionalLocations);
            }
        ];

        foreach ($detectionSteps as $step) {
            $bin = $step($cmd);
            if (!empty($bin)) {
                return $bin;
            }
        }

        throw new RuntimeException(sprintf('\'%s\' was nowhere to be found please specify the correct path', $cmd));
    }

    /**
     * Detect a command in a given path.
     *
     * @param  string $cmd
     * @param  string $path
     * @return string
     * @throws \RuntimeException
     */
    public static function detectCmdLocationInPath(string $cmd, string $path) : string
    {
        $command = $path . DIRECTORY_SEPARATOR . $cmd;
        $bin     = self::isExecutable($command);
        if (empty($bin)) {
            throw new RuntimeException(sprintf('wrong path specified for \'%s\': %s', $cmd, $path));
        }
        return $bin;
    }

    /**
     * Detect command location using which cli command.
     *
     * @param  string $cmd
     * @return string
     */
    public static function detectCmdLocationWithWhich($cmd) : string
    {
        $bin = '';
        // on nx systems use 'which' command.
        if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
            $command = trim(`which $cmd`);
            $bin     = self::isExecutable($command);
        }
        return $bin;

    }

    /**
     * Check path list for executable command.
     *
     * @param  string $cmd
     * @param  array  $paths
     * @return string
     */
    public static function detectCmdLocationInPaths($cmd, array $paths) : string
    {
        foreach ($paths as $path) {
            $command = $path . DIRECTORY_SEPARATOR . $cmd;
            $bin     = self::isExecutable($command);
            if (!empty($bin)) {
                return $bin;
            }
        }
        return '';
    }

    /**
     * Return local $PATH variable.
     *
     * @return string
     * @throws \RuntimeException
     */
    public static function getEnvPath() : string
    {
        // check for unix and windows case $_SERVER index
        foreach (['PATH', 'Path', 'path'] as $index) {
            if (isset($_SERVER[$index])) {
                return $_SERVER[$index];
            }
        }
        throw new RuntimeException('cant find local PATH variable');
    }

    /**
     * Returns the executable command if the command is executable, null otherwise.
     * Search for $command.exe on Windows systems.
     *
     * @param  string $command
     * @return string
     */
    public static function isExecutable($command) : string
    {
        if (is_executable($command)) {
            return $command;
        }
        // on windows check the .exe suffix
        if (defined('PHP_WINDOWS_VERSION_BUILD')) {
            $command .= '.exe';
            if (is_executable($command)) {
                return $command;
            }
        }
        return '';
    }

    /**
     * Formats a buffer with a specified ANSI color sequence if colors are enabled.
     *
     * @author Sebastian Bergmann <sebastian@phpunit.de>
     * @param  string $color
     * @param  string $buffer
     * @return string
     */
    public static function formatWithColor(string $color, string $buffer) : string
    {
        $codes   = array_map('trim', explode(',', $color));
        $lines   = explode("\n", $buffer);
        $padding = max(array_map('strlen', $lines));

        $styles = [];
        foreach ($codes as $code) {
            $styles[] = self::$ansiCodes[$code];
        }
        $style = sprintf("\x1b[%sm", implode(';', $styles));

        $styledLines = [];
        foreach ($lines as $line) {
            $styledLines[] = strlen($line) ? $style . str_pad($line, $padding) . "\x1b[0m" : '';
        }

        return implode(PHP_EOL, $styledLines);
    }

    /**
     * Fills up a text buffer with '*' to consume 72 chars.
     *
     * @param  string $buffer
     * @param  int    $length
     * @return string
     */
    public static function formatWithAsterisk(string $buffer, int $length = 75) : string
    {
        return $buffer . str_repeat('*', $length - strlen($buffer)) . PHP_EOL;
    }

    /**
     * Can command pipe operator be used.
     *
     * @return bool
     */
    public static function canPipe() : bool
    {
        return !defined('PHP_WINDOWS_VERSION_BUILD');
    }

    /**
     * Removes a directory that is not empty.
     *
     * @param string $dir
     */
    public static function removeDir(string $dir)
    {
        foreach (scandir($dir) as $file) {
            if ('.' === $file || '..' === $file) {
                continue;
            }
            if (is_dir($dir . '/' . $file)) {
                self::removeDir($dir . '/' . $file);
            } else {
                unlink($dir . '/' . $file);
            }
        }
        rmdir($dir);
    }
}