pastuhov\Command\Command

Complexity

Total Complexity

9

Size/Duplication

Total Lines	82
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

94.87%

Importance

Changes	7
Bugs	1	Features	1

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
B	exec()	0	22	4
B	bindParams()	0	33	4

<?php
namespace pastuhov\Command;

/**
 * Command.
 */
final class Command
{
    private function __construct()
    {
    }

    /**
     * Execute command with params.
     *
     * @param string $command
     * @param array  $params
     * @param bool   $escape  True to escape each param using escapeshellarg
     *
     * @return bool|string
     *
     * @throws \Exception
     */
    public static function exec($command, array $params = array(), $escape=true)
    {
        if (empty($command)) {
            throw new \Exception('Command line is empty');
        }

        $command = self::bindParams($command, $params, $escape);

        exec($command, $output, $code);

        if (count($output) === 0) {
            $output = $code;
        } else {
            $output = implode(PHP_EOL, $output);
        }

        if ($code !== 0) {
            throw new \Exception($output . ' Command line: ' . $command);
        }

        return $output;
    }

    /**
     * Bind params to command.
     *
     * @param string $command
     * @param array  $params
     *
     * @return string
     */
    public static function bindParams($command, array $params, $escape)
    {
        if (count($params) > 0) {
            $wrapper = function ($string) {
                return '{' . $string . '}';
            };
            $converter = function ($var) use ($escape) {
                if (is_array($var)) {
                    $var = implode(' ', $var);
                }

                if ($escape) {
                    $var = escapeshellarg($var);
                }

                return $var;
            };

            $command = str_replace(
                array_map(
                    $wrapper,
                    array_keys($params)
                ),
                array_map(
                    $converter,
                    array_values($params)
                ),
                $command
            );
        }

        return $command;
    }
}