Crap4j.php
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<?php declare(strict_types=1);
/*
* This file is part of phpunit/php-code-coverage.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\CodeCoverage\Report;
use function date;
use function dirname;
use function file_put_contents;
use function htmlspecialchars;
use function is_string;
use function round;
use function strpos;
use DOMDocument;
use SebastianBergmann\CodeCoverage\CodeCoverage;
use SebastianBergmann\CodeCoverage\Driver\WriteOperationFailedException;
use SebastianBergmann\CodeCoverage\Node\File;
use SebastianBergmann\CodeCoverage\Util\Filesystem;
final class Crap4j
{
/**
* @var int
*/
private $threshold;
public function __construct(int $threshold = 30)
{
$this->threshold = $threshold;
}
/**
* @throws WriteOperationFailedException
*/
public function process(CodeCoverage $coverage, ?string $target = null, ?string $name = null): string
{
$document = new DOMDocument('1.0', 'UTF-8');
$document->formatOutput = true;
$root = $document->createElement('crap_result');
$document->appendChild($root);
$project = $document->createElement('project', is_string($name) ? $name : '');
$root->appendChild($project);
$root->appendChild($document->createElement('timestamp', date('Y-m-d H:i:s')));
$stats = $document->createElement('stats');
$methodsNode = $document->createElement('methods');
$report = $coverage->getReport();
unset($coverage);
$fullMethodCount = 0;
$fullCrapMethodCount = 0;
$fullCrapLoad = 0;
$fullCrap = 0;
foreach ($report as $item) {
$namespace = 'global';
if (!$item instanceof File) {
continue;
}
$file = $document->createElement('file');
$file->setAttribute('name', $item->pathAsString());
$classes = $item->classesAndTraits();
foreach ($classes as $className => $class) {
foreach ($class['methods'] as $methodName => $method) {
$crapLoad = $this->crapLoad((float) $method['crap'], $method['ccn'], $method['coverage']);
$fullCrap += $method['crap'];
$fullCrapLoad += $crapLoad;
$fullMethodCount++;
if ($method['crap'] >= $this->threshold) {
$fullCrapMethodCount++;
}
$methodNode = $document->createElement('method');
if (!empty($class['namespace'])) {
$namespace = $class['namespace'];
}
$methodNode->appendChild($document->createElement('package', $namespace));
$methodNode->appendChild($document->createElement('className', $className));
$methodNode->appendChild($document->createElement('methodName', $methodName));
$methodNode->appendChild($document->createElement('methodSignature', htmlspecialchars($method['signature'])));
$methodNode->appendChild($document->createElement('fullMethod', htmlspecialchars($method['signature'])));
$methodNode->appendChild($document->createElement('crap', (string) $this->roundValue((float) $method['crap'])));
$methodNode->appendChild($document->createElement('complexity', (string) $method['ccn']));
$methodNode->appendChild($document->createElement('coverage', (string) $this->roundValue($method['coverage'])));
$methodNode->appendChild($document->createElement('crapLoad', (string) round($crapLoad)));
$methodsNode->appendChild($methodNode);
}
}
}
$stats->appendChild($document->createElement('name', 'Method Crap Stats'));
$stats->appendChild($document->createElement('methodCount', (string) $fullMethodCount));
$stats->appendChild($document->createElement('crapMethodCount', (string) $fullCrapMethodCount));
$stats->appendChild($document->createElement('crapLoad', (string) round($fullCrapLoad)));
$stats->appendChild($document->createElement('totalCrap', (string) $fullCrap));
$crapMethodPercent = 0;
if ($fullMethodCount > 0) {
$crapMethodPercent = $this->roundValue((100 * $fullCrapMethodCount) / $fullMethodCount);
}
$stats->appendChild($document->createElement('crapMethodPercent', (string) $crapMethodPercent));
$root->appendChild($stats);
$root->appendChild($methodsNode);
$buffer = $document->saveXML();
if ($target !== null) {
if (!strpos($target, '://') !== false) {
Filesystem::createDirectory(dirname($target));
}
if (@file_put_contents($target, $buffer) === false) {
throw new WriteOperationFailedException($target);
}
}
return $buffer;
}
private function crapLoad(float $crapValue, int $cyclomaticComplexity, float $coveragePercent): float
{
$crapLoad = 0;
if ($crapValue >= $this->threshold) {
$crapLoad += $cyclomaticComplexity * (1.0 - $coveragePercent / 100);
$crapLoad += $cyclomaticComplexity / $this->threshold;
}
return $crapLoad;
}
private function roundValue(float $value): float
{
return round($value, 2);
}
}