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<?php
declare(strict_types=1);
namespace Shirabe\Lint\Support;
final class FileFinder
{
// Returns absolute paths to each crate's Cargo.toml (crates/*/Cargo.toml), sorted.
public static function cargoTomls(string $rootDir): array
{
$paths = glob("{$rootDir}/crates/*/Cargo.toml") ?: [];
sort($paths);
return $paths;
}
/** @return list<string> absolute paths to *.rs files under crates/, sorted */
public static function rustFiles(string $rootDir): array
{
return self::walk("{$rootDir}/crates", static fn (string $path): bool => str_ends_with($path, '.rs'));
}
// Returns absolute paths to mod.rs files under each crate's src/ tree
// (crates/*/src/**/mod.rs), sorted.
public static function modRsFiles(string $rootDir): array
{
$found = [];
foreach (glob("{$rootDir}/crates/*", GLOB_ONLYDIR) ?: [] as $crateDir) {
$srcDir = "{$crateDir}/src";
if (!is_dir($srcDir)) {
continue;
}
foreach (self::walk($srcDir, static fn (string $path): bool => basename($path) === 'mod.rs') as $path) {
$found[] = $path;
}
}
sort($found);
return $found;
}
/** @return list<string> */
private static function walk(string $baseDir, callable $predicate): array
{
if (!is_dir($baseDir)) {
return [];
}
$found = [];
$iterator = new \RecursiveIteratorIterator(
new \RecursiveDirectoryIterator($baseDir, \FilesystemIterator::SKIP_DOTS),
);
foreach ($iterator as $file) {
/** @var \SplFileInfo $file */
if ($file->isFile() && $predicate($file->getPathname())) {
$found[] = $file->getPathname();
}
}
sort($found);
return $found;
}
}
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