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