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<?php
declare(strict_types=1);
namespace Shirabe\Lint\Linters;
use Shirabe\Lint\Linter;
use Shirabe\Lint\Support\FileFinder;
use Shirabe\Lint\Support\Paths;
final class NoHaltCompilerLiteral implements Linter
{
// Assembled so that this file does not contain what it looks for.
private const TOKEN = '__' . 'HALT_COMPILER();';
public function name(): string
{
return 'no_halt_compiler_literal';
}
public function failureIntro(): string
{
return "Found a literal `" . self::TOKEN . "`.\n"
. "The executable carries the Composer runtime bundle as a phar that PHP finds by\n"
. "scanning for the first occurrence of that token, and every literal here ends up in\n"
. "the same binary, so an earlier one shadows the bundle. Build the token at run time\n"
. "instead — see "
. '`halt_compiler_token` in `crates/shirabe-php-shim/src/phar.rs`:';
}
public function check(string $rootDir, array $excludes): array
{
$errors = [];
foreach ($this->embeddedFiles($rootDir) as $path) {
$relative = Paths::relativeTo($rootDir, $path);
if (in_array($relative, $excludes, true)) {
continue;
}
foreach (file($path) as $idx => $raw) {
if (!str_contains($raw, self::TOKEN)) {
continue;
}
$errors[] = "{$relative}:" . ($idx + 1) . ': ' . trim($raw);
}
}
return $errors;
}
/**
* The sources whose bytes reach the binary: Rust code, and the PHP files the Rust code
* embeds with `include_str!`.
*
* @return list<string>
*/
private function embeddedFiles(string $rootDir): array
{
$paths = FileFinder::rustFiles($rootDir);
foreach (glob("{$rootDir}/crates/*/php", GLOB_ONLYDIR) ?: [] as $phpDir) {
$iterator = new \RecursiveIteratorIterator(
new \RecursiveDirectoryIterator($phpDir, \FilesystemIterator::SKIP_DOTS),
);
foreach ($iterator as $file) {
/** @var \SplFileInfo $file */
if ($file->isFile()) {
$paths[] = $file->getPathname();
}
}
}
sort($paths);
return $paths;
}
}
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