wiki-grav/plugins/page-toc/classes/UniqueSlugify.php

75 lines
1.6 KiB
PHP
Raw Permalink Normal View History

<?php
/**
* PageTOC
*
* This plugin allows creation of Table of Contents + Link Anchors
*
* Based on the original version https://github.com/caseyamcl/toc
* by Casey McLaughlin <caseyamcl@gmail.com>
*
* Licensed under MIT, see LICENSE.
*/
declare(strict_types=1);
namespace Grav\Plugin\PageToc;
use Cocur\Slugify\Slugify;
use Cocur\Slugify\SlugifyInterface;
/**
* UniqueSluggify creates slugs from text without repeating the same slug twice per instance
*/
class UniqueSlugify implements SlugifyInterface
{
protected $slugify;
protected $used;
protected $options;
/**
* Constructor
*
* @param SlugifyInterface|null $slugify
*/
public function __construct()
{
$this->used = array();
$this->slugify = new Slugify();
}
/**
* Slugify
*
* @param string $text
* @param array|null $options
* @return string
*/
public function slugify($text, $options = null): string
{
$slugged = $this->slugify->slugify($text, $options);
$maxlen = $options['maxlen'] ?? null;
$prefix = $options['prefix'] ?? null;
if (is_int($maxlen) && strlen($slugged) > $maxlen) {
$slugged = substr($slugged, 0, $maxlen);
}
if (isset($prefix)) {
$slugged = $prefix . $slugged;
}
$count = 1;
$orig = $slugged;
while (in_array($slugged, $this->used)) {
$slugged = $orig . '-' . $count;
$count++;
}
$this->used[] = $slugged;
return $slugged;
}
}