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123 lines (101 loc) · 3.08 KB
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<?php declare(strict_types=1);
/*
* This file is part of the php-code-coverage package.
*
* (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\Driver;
use SebastianBergmann\CodeCoverage\Filter;
use SebastianBergmann\CodeCoverage\RuntimeException;
/**
* Driver for Xdebug's code coverage functionality.
*
* @codeCoverageIgnore
*/
final class Xdebug implements Driver
{
/**
* @var array
*/
private $cacheNumLines = [];
/**
* @var Filter
*/
private $filter;
/**
* @throws RuntimeException
*/
public function __construct(Filter $filter = null)
{
if (!\extension_loaded('xdebug')) {
throw new RuntimeException('This driver requires Xdebug');
}
if (\version_compare(\phpversion('xdebug'), '3', '>=')) {
$mode = \getenv('XDEBUG_MODE');
if ($mode === false) {
$mode = \ini_get('xdebug.mode');
}
if ($mode === false ||
!\in_array('coverage', \explode(',', $mode), true)) {
throw new RuntimeException('XDEBUG_MODE=coverage or xdebug.mode=coverage has to be set');
}
} elseif (!\ini_get('xdebug.coverage_enable')) {
throw new RuntimeException('xdebug.coverage_enable=On has to be set');
}
if ($filter === null) {
$filter = new Filter;
}
$this->filter = $filter;
}
/**
* Start collection of code coverage information.
*/
public function start(bool $determineUnusedAndDead = true): void
{
if ($determineUnusedAndDead) {
\xdebug_start_code_coverage(XDEBUG_CC_UNUSED | XDEBUG_CC_DEAD_CODE);
} else {
\xdebug_start_code_coverage();
}
}
/**
* Stop collection of code coverage information.
*/
public function stop(): array
{
$data = \xdebug_get_code_coverage();
\xdebug_stop_code_coverage();
return $this->cleanup($data);
}
private function cleanup(array $data): array
{
foreach (\array_keys($data) as $file) {
unset($data[$file][0]);
if (!$this->filter->isFile($file)) {
continue;
}
$numLines = $this->getNumberOfLinesInFile($file);
foreach (\array_keys($data[$file]) as $line) {
if ($line > $numLines) {
unset($data[$file][$line]);
}
}
}
return $data;
}
private function getNumberOfLinesInFile(string $fileName): int
{
if (!isset($this->cacheNumLines[$fileName])) {
$buffer = \file_get_contents($fileName);
$lines = \substr_count($buffer, "\n");
if (\substr($buffer, -1) !== "\n") {
$lines++;
}
$this->cacheNumLines[$fileName] = $lines;
}
return $this->cacheNumLines[$fileName];
}
}