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<?php |
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namespace kalanis\kw_storage\Extras; |
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/** |
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* Trait TVolumeCopy |
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* @package kalanis\kw_storage\Extras |
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* Copy dirs - deep |
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*/ |
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trait TVolumeCopy |
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{ |
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/** |
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* Copy a file, or recursively copy a folder and its contents |
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* @param string $source Source path |
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* @param string $dest Destination path |
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* @param int $permissions New folder creation permissions |
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* @return bool Returns true on success, false on failure |
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* @version 1.0.1 |
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* @link http://aidanlister.com/2004/04/recursively-copying-directories-in-php/ |
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* @link https://stackoverflow.com/questions/2050859/copy-entire-contents-of-a-directory-to-another-using-php |
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* @author Aidan Lister <[email protected]> |
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*/ |
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protected function xcopy(string $source, string $dest, int $permissions = 0755): bool |
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{ |
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// check if source exists |
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if (!file_exists($source)) { |
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return false; |
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} |
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$sourceHash = $this->hashDirectory($source); |
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// Check for symlinks |
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if (is_link($source)) { |
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// @codeCoverageIgnoreStart |
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$data = readlink($source); |
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if (false === $data) { |
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return false; |
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} |
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return symlink($data, $dest); |
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} |
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// @codeCoverageIgnoreEnd |
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// Simple copy for a file |
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if (is_file($source)) { |
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return copy($source, $dest); |
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} |
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// Make destination directory |
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if (!is_dir($dest)) { |
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mkdir($dest, $permissions); |
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} |
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// Loop through the folder |
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$dir = dir($source); |
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while (false !== ($entry = $dir->read())) { |
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// Skip pointers |
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if (in_array($entry, ['.', '..'])) { |
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continue; |
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} |
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// Deep copy directories |
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if ($sourceHash != $this->hashDirectory($source . DIRECTORY_SEPARATOR . $entry)) { |
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$this->xcopy($source . DIRECTORY_SEPARATOR . $entry, $dest . DIRECTORY_SEPARATOR . $entry, $permissions); |
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} |
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} |
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// Clean up |
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$dir->close(); |
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return true; |
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} |
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/** |
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* In case of coping a directory inside itself, there is a need to hash check the directory otherwise and infinite loop of coping is generated |
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* @param string $directory |
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* @return string|null |
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*/ |
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protected function hashDirectory(string $directory): ?string |
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{ |
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if (!is_dir($directory)) { |
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return null; |
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} |
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$files = []; |
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$dir = dir($directory); |
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while (false !== ($file = $dir->read())) { |
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if (in_array($file, ['.', '..'])) { |
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continue; |
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} |
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if (is_dir($directory . DIRECTORY_SEPARATOR . $file)) { |
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$files[] = $this->hashDirectory($directory . DIRECTORY_SEPARATOR . $file); |
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} else { |
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$files[] = md5_file($directory . DIRECTORY_SEPARATOR . $file); |
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} |
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} |
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$dir->close(); |
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return md5(implode('', $files)); |
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} |
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} |
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