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Introduce standalone DirDiff util class

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crazywhalecc 2025-11-09 17:12:22 +08:00
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commit f4b03ae835
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src/SPC/store/DirDiff.php Normal file
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<?php
declare(strict_types=1);
namespace SPC\store;
/**
* A util class to diff directory file increments.
*/
class DirDiff
{
protected array $before = [];
protected array $before_file_hashes = [];
public function __construct(protected string $dir, protected bool $track_content_changes = false)
{
$this->reset();
}
/**
* Reset the baseline to current state.
*/
public function reset(): void
{
$this->before = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
if ($this->track_content_changes) {
$this->before_file_hashes = [];
foreach ($this->before as $file) {
$this->before_file_hashes[$file] = md5_file($this->dir . DIRECTORY_SEPARATOR . $file);
}
}
}
/**
* Get the list of incremented files.
*
* @param bool $relative Return relative paths or absolute paths
* @return array<string> List of incremented files
*/
public function getIncrementFiles(bool $relative = false): array
{
$after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
$diff = array_diff($after, $this->before);
if ($relative) {
return $diff;
}
return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $diff);
}
/**
* Get the list of changed files (including new files).
*
* @param bool $relative Return relative paths or absolute paths
* @param bool $include_new_files Include new files as changed files
* @return array<string> List of changed files
*/
public function getChangedFiles(bool $relative = false, bool $include_new_files = true): array
{
$after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
$changed = [];
foreach ($after as $file) {
if (isset($this->before_file_hashes[$file])) {
$after_hash = md5_file($this->dir . DIRECTORY_SEPARATOR . $file);
if ($after_hash !== $this->before_file_hashes[$file]) {
$changed[] = $file;
}
} elseif ($include_new_files) {
// New file, consider as changed
$changed[] = $file;
}
}
if ($relative) {
return $changed;
}
return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $changed);
}
/**
* Get the list of removed files.
*
* @param bool $relative Return relative paths or absolute paths
* @return array<string> List of removed files
*/
public function getRemovedFiles(bool $relative = false): array
{
$after = FileSystem::scanDirFiles($this->dir, relative: true) ?: [];
$removed = array_diff($this->before, $after);
if ($relative) {
return $removed;
}
return array_map(fn ($f) => $this->dir . DIRECTORY_SEPARATOR . $f, $removed);
}
}