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<?php |
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namespace WebPConvert\Convert\Converters\ConverterTraits; |
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use WebPConvert\Convert\Exceptions\ConversionFailed\ConverterNotOperational\SystemRequirementsNotMetException; |
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/** |
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* Trait for converters that uses exec() |
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* |
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* @package WebPConvert |
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* @author Bjørn Rosell <[email protected]> |
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* @since Class available since Release 2.0.0 |
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*/ |
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trait ExecTrait |
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{ |
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abstract protected function logLn($msg, $style = ''); |
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/** |
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* Helper function for examining if "nice" command is available |
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* |
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* @return boolean true if nice is available |
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*/ |
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protected static function hasNiceSupport() |
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{ |
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exec("nice 2>&1", $niceOutput); |
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if (is_array($niceOutput) && isset($niceOutput[0])) { |
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if (preg_match('/usage/', $niceOutput[0]) || (preg_match('/^\d+$/', $niceOutput[0]))) { |
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/* |
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* Nice is available - default niceness (+10) |
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* https://www.lifewire.com/uses-of-commands-nice-renice-2201087 |
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* https://www.computerhope.com/unix/unice.htm |
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*/ |
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return true; |
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} |
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return false; |
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} |
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return false; // to satisfy phpstan |
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} |
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/** |
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* Logs output from the exec call. |
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* |
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* @param array $output |
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* |
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* @return void |
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*/ |
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protected function logExecOutput($output) |
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{ |
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if (is_array($output) && count($output) > 0) { |
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$this->logLn(''); |
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$this->logLn('Output:', 'italic'); |
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foreach ($output as $line) { |
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$this->logLn(print_r($line, true)); |
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} |
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$this->logLn(''); |
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} |
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} |
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/** |
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* Check basic operationality of exec converters (that the "exec" function is available) |
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* |
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* @throws WebPConvert\Convert\Exceptions\ConversionFailed\ConverterNotOperational\SystemRequirementsNotMetException |
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* @return void |
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*/ |
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public function checkOperationalityExecTrait() |
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{ |
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if (!function_exists('exec')) { |
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throw new SystemRequirementsNotMetException('exec() is not enabled.'); |
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} |
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} |
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} |
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rosell-dk /
webp-convert
