julienmonnerie/kirby/src/Filesystem/Dir.php
2022-12-19 14:56:05 +01:00

583 lines
13 KiB
PHP

<?php
namespace Kirby\Filesystem;
use Exception;
use Kirby\Cms\App;
use Kirby\Cms\Helpers;
use Kirby\Cms\Page;
use Kirby\Toolkit\Str;
use Throwable;
/**
* The `Dir` class provides methods
* for dealing with directories on the
* file system level, like creating,
* listing, moving, copying or
* evaluating directories etc.
*
* For the Cms, it includes methods,
* that handle scanning directories
* and converting the results into
* children, files and other page stuff.
*
* @package Kirby Filesystem
* @author Bastian Allgeier <bastian@getkirby.com>
* @link https://getkirby.com
* @copyright Bastian Allgeier
* @license https://opensource.org/licenses/MIT
*/
class Dir
{
/**
* Ignore when scanning directories
*/
public static array $ignore = [
'.',
'..',
'.DS_Store',
'.gitignore',
'.git',
'.svn',
'.htaccess',
'Thumb.db',
'@eaDir'
];
public static string $numSeparator = '_';
/**
* Copy the directory to a new destination
*/
public static function copy(
string $dir,
string $target,
bool $recursive = true,
array $ignore = []
): bool {
if (is_dir($dir) === false) {
throw new Exception('The directory "' . $dir . '" does not exist');
}
if (is_dir($target) === true) {
throw new Exception('The target directory "' . $target . '" exists');
}
if (static::make($target) !== true) {
throw new Exception('The target directory "' . $target . '" could not be created');
}
foreach (static::read($dir) as $name) {
$root = $dir . '/' . $name;
if (in_array($root, $ignore) === true) {
continue;
}
if (is_dir($root) === true) {
if ($recursive === true) {
static::copy($root, $target . '/' . $name, true, $ignore);
}
} else {
F::copy($root, $target . '/' . $name);
}
}
return true;
}
/**
* Get all subdirectories
*/
public static function dirs(
string $dir,
array|null $ignore = null,
bool $absolute = false
): array {
$scan = static::read($dir, $ignore, true);
$result = array_values(array_filter($scan, 'is_dir'));
if ($absolute !== true) {
$result = array_map('basename', $result);
}
return $result;
}
/**
* Checks if the directory exists on disk
*/
public static function exists(string $dir): bool
{
return is_dir($dir) === true;
}
/**
* Get all files
*/
public static function files(
string $dir,
array|null $ignore = null,
bool $absolute = false
): array {
$scan = static::read($dir, $ignore, true);
$result = array_values(array_filter($scan, 'is_file'));
if ($absolute !== true) {
$result = array_map('basename', $result);
}
return $result;
}
/**
* Read the directory and all subdirectories
*/
public static function index(
string $dir,
bool $recursive = false,
array|null $ignore = null,
string $path = null
): array {
$result = [];
$dir = realpath($dir);
$items = static::read($dir);
foreach ($items as $item) {
$root = $dir . '/' . $item;
$entry = $path !== null ? $path . '/' . $item : $item;
$result[] = $entry;
if ($recursive === true && is_dir($root) === true) {
$result = array_merge($result, static::index($root, true, $ignore, $entry));
}
}
return $result;
}
/**
* Checks if the folder has any contents
*/
public static function isEmpty(string $dir): bool
{
return count(static::read($dir)) === 0;
}
/**
* Checks if the directory is readable
*/
public static function isReadable(string $dir): bool
{
return is_readable($dir);
}
/**
* Checks if the directory is writable
*/
public static function isWritable(string $dir): bool
{
return is_writable($dir);
}
/**
* Scans the directory and analyzes files,
* content, meta info and children. This is used
* in `Kirby\Cms\Page`, `Kirby\Cms\Site` and
* `Kirby\Cms\User` objects to fetch all
* relevant information.
*
* Don't use outside the Cms context.
*
* @internal
*/
public static function inventory(
string $dir,
string $contentExtension = 'txt',
array|null $contentIgnore = null,
bool $multilang = false
): array {
$dir = realpath($dir);
$inventory = [
'children' => [],
'files' => [],
'template' => 'default',
];
if ($dir === false) {
return $inventory;
}
$items = static::read($dir, $contentIgnore);
// a temporary store for all content files
$content = [];
// sort all items naturally to avoid sorting issues later
natsort($items);
foreach ($items as $item) {
// ignore all items with a leading dot
if (in_array(substr($item, 0, 1), ['.', '_']) === true) {
continue;
}
$root = $dir . '/' . $item;
if (is_dir($root) === true) {
// extract the slug and num of the directory
if (preg_match('/^([0-9]+)' . static::$numSeparator . '(.*)$/', $item, $match)) {
$num = (int)$match[1];
$slug = $match[2];
} else {
$num = null;
$slug = $item;
}
$inventory['children'][] = [
'dirname' => $item,
'model' => null,
'num' => $num,
'root' => $root,
'slug' => $slug,
];
} else {
$extension = pathinfo($item, PATHINFO_EXTENSION);
switch ($extension) {
case 'htm':
case 'html':
case 'php':
// don't track those files
break;
case $contentExtension:
$content[] = pathinfo($item, PATHINFO_FILENAME);
break;
default:
$inventory['files'][$item] = [
'filename' => $item,
'extension' => $extension,
'root' => $root,
];
}
}
}
// remove the language codes from all content filenames
if ($multilang === true) {
foreach ($content as $key => $filename) {
$content[$key] = pathinfo($filename, PATHINFO_FILENAME);
}
$content = array_unique($content);
}
$inventory = static::inventoryContent($inventory, $content);
$inventory = static::inventoryModels($inventory, $contentExtension, $multilang);
return $inventory;
}
/**
* Take all content files,
* remove those who are meta files and
* detect the main content file
*/
protected static function inventoryContent(array $inventory, array $content): array
{
// filter meta files from the content file
if (empty($content) === true) {
$inventory['template'] = 'default';
return $inventory;
}
foreach ($content as $contentName) {
// could be a meta file. i.e. cover.jpg
if (isset($inventory['files'][$contentName]) === true) {
continue;
}
// it's most likely the template
$inventory['template'] = $contentName;
}
return $inventory;
}
/**
* Go through all inventory children
* and inject a model for each
*/
protected static function inventoryModels(
array $inventory,
string $contentExtension,
bool $multilang = false
): array {
// inject models
if (
empty($inventory['children']) === false &&
empty(Page::$models) === false
) {
if ($multilang === true) {
$contentExtension = App::instance()->defaultLanguage()->code() . '.' . $contentExtension;
}
foreach ($inventory['children'] as $key => $child) {
foreach (Page::$models as $modelName => $modelClass) {
if (file_exists($child['root'] . '/' . $modelName . '.' . $contentExtension) === true) {
$inventory['children'][$key]['model'] = $modelName;
break;
}
}
}
}
return $inventory;
}
/**
* Create a (symbolic) link to a directory
*/
public static function link(string $source, string $link): bool
{
static::make(dirname($link), true);
if (is_dir($link) === true) {
return true;
}
if (is_dir($source) === false) {
throw new Exception(sprintf('The directory "%s" does not exist and cannot be linked', $source));
}
try {
return symlink($source, $link) === true;
} catch (Throwable) {
return false;
}
}
/**
* Creates a new directory
*
* @param string $dir The path for the new directory
* @param bool $recursive Create all parent directories, which don't exist
* @return bool True: the dir has been created, false: creating failed
* @throws \Exception If a file with the provided path already exists or the parent directory is not writable
*/
public static function make(string $dir, bool $recursive = true): bool
{
if (empty($dir) === true) {
return false;
}
if (is_dir($dir) === true) {
return true;
}
if (is_file($dir) === true) {
throw new Exception(sprintf('A file with the name "%s" already exists', $dir));
}
$parent = dirname($dir);
if ($recursive === true) {
if (is_dir($parent) === false) {
static::make($parent, true);
}
}
if (is_writable($parent) === false) {
throw new Exception(sprintf('The directory "%s" cannot be created', $dir));
}
return Helpers::handleErrors(
fn (): bool => mkdir($dir),
// if the dir was already created (race condition),
fn (int $errno, string $errstr): bool => Str::endsWith($errstr, 'File exists'),
// consider it a success
true
);
}
/**
* Recursively check when the dir and all
* subfolders have been modified for the last time.
*
* @param string $dir The path of the directory
*/
public static function modified(string $dir, string $format = null, string $handler = 'date'): int|string
{
$modified = filemtime($dir);
$items = static::read($dir);
foreach ($items as $item) {
if (is_file($dir . '/' . $item) === true) {
$newModified = filemtime($dir . '/' . $item);
} else {
$newModified = static::modified($dir . '/' . $item);
}
$modified = ($newModified > $modified) ? $newModified : $modified;
}
return Str::date($modified, $format, $handler);
}
/**
* Moves a directory to a new location
*
* @param string $old The current path of the directory
* @param string $new The desired path where the dir should be moved to
* @return bool true: the directory has been moved, false: moving failed
*/
public static function move(string $old, string $new): bool
{
if ($old === $new) {
return true;
}
if (is_dir($old) === false || is_dir($new) === true) {
return false;
}
if (static::make(dirname($new), true) !== true) {
throw new Exception('The parent directory cannot be created');
}
return rename($old, $new);
}
/**
* Returns a nicely formatted size of all the contents of the folder
*
* @param string $dir The path of the directory
* @param string|false|null $locale Locale for number formatting,
* `null` for the current locale,
* `false` to disable number formatting
*/
public static function niceSize(
string $dir,
string|false|null $locale = null
): string {
return F::niceSize(static::size($dir), $locale);
}
/**
* Reads all files from a directory and returns them as an array.
* It skips unwanted invisible stuff.
*
* @param string $dir The path of directory
* @param array $ignore Optional array with filenames, which should be ignored
* @param bool $absolute If true, the full path for each item will be returned
* @return array An array of filenames
*/
public static function read(
string $dir,
array|null $ignore = null,
bool $absolute = false
): array {
if (is_dir($dir) === false) {
return [];
}
// create the ignore pattern
$ignore ??= static::$ignore;
$ignore = array_merge($ignore, ['.', '..']);
// scan for all files and dirs
$result = array_values((array)array_diff(scandir($dir), $ignore));
// add absolute paths
if ($absolute === true) {
$result = array_map(fn ($item) => $dir . '/' . $item, $result);
}
return $result;
}
/**
* Removes a folder including all containing files and folders
*/
public static function remove(string $dir): bool
{
$dir = realpath($dir);
if (is_dir($dir) === false) {
return true;
}
if (is_link($dir) === true) {
return F::unlink($dir);
}
foreach (scandir($dir) as $childName) {
if (in_array($childName, ['.', '..']) === true) {
continue;
}
$child = $dir . '/' . $childName;
if (is_dir($child) === true && is_link($child) === false) {
static::remove($child);
} else {
F::unlink($child);
}
}
return rmdir($dir);
}
/**
* Gets the size of the directory
*
* @param string $dir The path of the directory
* @param bool $recursive Include all subfolders and their files
*/
public static function size(string $dir, bool $recursive = true): int|false
{
if (is_dir($dir) === false) {
return false;
}
// Get size for all direct files
$size = F::size(static::files($dir, null, true));
// if recursive, add sizes of all subdirectories
if ($recursive === true) {
foreach (static::dirs($dir, null, true) as $subdir) {
$size += static::size($subdir);
}
}
return $size;
}
/**
* Checks if the directory or any subdirectory has been
* modified after the given timestamp
*/
public static function wasModifiedAfter(string $dir, int $time): bool
{
if (filemtime($dir) > $time) {
return true;
}
$content = static::read($dir);
foreach ($content as $item) {
$subdir = $dir . '/' . $item;
if (filemtime($subdir) > $time) {
return true;
}
if (is_dir($subdir) === true && static::wasModifiedAfter($subdir, $time) === true) {
return true;
}
}
return false;
}
}