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<?php |
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namespace N98\Util; |
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use RuntimeException; |
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/** |
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* Class Exec |
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* |
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* @package N98\Util |
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*/ |
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class Exec |
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{ |
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/** |
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* @var string |
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*/ |
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const REDIRECT_STDERR_TO_STDOUT = ' 2>&1'; |
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/** |
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* @var int (0-255) |
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*/ |
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const CODE_CLEAN_EXIT = 0; |
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/** |
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* Every error in a pipe will be exited with an error code |
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*/ |
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const SET_O_PIPEFAIL = 'set -o pipefail;'; |
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/** |
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* @param string $command |
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* @param string|null $output |
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* @param int $returnCode |
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*/ |
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public static function run($command, &$output = null, &$returnCode = null) |
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{ |
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if (!self::allowed()) { |
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$message = sprintf("No PHP exec(), can not execute command '%s'.", $command); |
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throw new RuntimeException($message); |
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} |
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if (OperatingSystem::isBashCompatibleShell() && self::isPipefailOptionAvailable()) { |
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$command = self::SET_O_PIPEFAIL . $command; |
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} |
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$command .= self::REDIRECT_STDERR_TO_STDOUT; |
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exec($command, $outputArray, $returnCode); |
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$output = self::parseCommandOutput((array) $outputArray); |
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if ($returnCode !== self::CODE_CLEAN_EXIT) { |
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throw new RuntimeException( |
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sprintf("Exit status %d for command %s. Output was: %s", $returnCode, $command, $output) |
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); |
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} |
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} |
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/** |
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* Exec class is allowed to run |
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* |
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* @return bool |
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*/ |
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public static function allowed() |
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{ |
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return function_exists('exec'); |
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} |
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/** |
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* string from array of strings representing one line per entry |
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* |
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* @param array $commandOutput |
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* @return string |
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*/ |
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private static function parseCommandOutput(array $commandOutput) |
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{ |
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return implode(PHP_EOL, $commandOutput) . PHP_EOL; |
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} |
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/** |
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* @return bool |
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*/ |
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private static function isPipefailOptionAvailable() |
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{ |
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exec('set -o | grep pipefail 2>&1', $output, $returnCode); |
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return $returnCode == self::CODE_CLEAN_EXIT; |
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} |
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} |
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netz98 /
n98-magerun
