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php-path/src/AbstractAbsolutePath.php

91 lines
2.8 KiB

<?php
declare(strict_types=1);
namespace Arokettu\Path;
use Arokettu\Path\Helpers\DataTypeHelper;
abstract class AbstractAbsolutePath extends AbstractPath implements AbsolutePathInterface
{
public function isAbsolute(): bool
{
return true;
}
public function isRelative(): bool
{
return false;
}
/**
* @param static $targetPath
* @param \Closure $equals(string $a, string $b): bool
*/
public function makeRelative(AbsolutePathInterface $targetPath, ?\Closure $equals = null): RelativePathInterface
{
if (\get_class($this) !== \get_class($targetPath) || $this->prefix !== $targetPath->prefix) {
throw new \InvalidArgumentException(
'You can only make relative path from paths of same type and same prefix'
);
}
// optimize if the same instance
if ($this === $targetPath || $this->components === $targetPath->components) {
return $this->buildRelative(DataTypeHelper::iterableToNewListInstance(
$this->components->count() > 0 && $this->components->top() === '' ? ['.', ''] : ['.']
));
}
// strip trailing slash
$baseComponents = $this->components;
if ($baseComponents->count() > 0 && $baseComponents->top() === '') {
$baseComponents = clone $baseComponents; // clone when necessary
$baseComponents->pop();
}
// strip trailing slash
$targetComponents = clone $targetPath->components; // always clone
if ($targetComponents->count() > 0 && $targetComponents->top() === '') {
$targetComponents->pop();
}
$length = min($baseComponents->count(), $targetComponents->count());
$equals ??= fn($a, $b) => $a === $b;
for ($i = 0; $i < $length; $i++) {
if (!$equals($baseComponents[$i], $targetComponents[$i])) {
break;
}
}
// delete $i components from the beginning (common prefix)
for ($j = 0; $j < $i; $j++) {
$targetComponents->shift();
}
// add (baseLen - $i) .. elements
$numBaseDiff = $baseComponents->count() - $i;
for ($j = 0; $j < $numBaseDiff; $j++) {
$targetComponents->unshift('..');
}
// relative marker
$targetComponents->unshift('.');
// trailing slash
if ($targetPath->components->count() && $targetPath->components->top() === '') {
$targetComponents->push('');
}
return $this->buildRelative($targetComponents);
}
protected function buildRelative(\SplDoublyLinkedList $components): RelativePathInterface
{
$path = new RelativePath('.');
$path->components = $components;
return $path;
}
}