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<?php |
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/* |
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* This file is part of dispositif/wikibot application (@github) |
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* 2019-2023 © Philippe M./Irønie <[email protected]> |
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* For the full copyright and MIT license information, view the license file. |
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*/ |
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declare(strict_types=1); |
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namespace App\Domain\Publisher; |
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use App\Domain\Utils\TextUtil; |
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class SeoSanitizer |
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{ |
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private const MAX_LENGTH_FIRST_SEG_ALLOWING_SECOND_SEG = 30; |
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private const REBUILD_SEPARATOR = ' - '; |
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/** |
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* Naive SEO sanitization of web page title. |
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* pretty domain name as "google.com" or "google.co.uk" |
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*/ |
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public function cleanSEOTitle(string $prettyDomainName, ?string $title): ?string |
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{ |
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if (empty(trim($title))) { |
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return null; |
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} |
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$title = str_replace(['–', '—', '\\'], ['-', '-', '/'], $title); // replace em dash with hyphen |
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$seoSegments = $this->extractSEOSegments($title); |
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// No SEO segmentation found |
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if (count($seoSegments) < 2) { |
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return $title; |
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} |
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$seoSegmentsFiltered = $this->deleteSegmentsContainingSitename($prettyDomainName, $seoSegments); |
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if (count($seoSegmentsFiltered) === 0) { |
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return trim($seoSegments[0]); |
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} |
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// if only one segment or first segment is long enough, return it |
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if ( |
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count($seoSegmentsFiltered) === 1 |
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|| mb_strlen($seoSegmentsFiltered[0]) >= self::MAX_LENGTH_FIRST_SEG_ALLOWING_SECOND_SEG |
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) { |
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return trim($seoSegmentsFiltered[0]); |
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} |
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// rebuild bestTitle but keep only the first 2 SEO segments |
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return trim($seoSegmentsFiltered[0]) . self::REBUILD_SEPARATOR . trim($seoSegmentsFiltered[1]); |
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} |
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private function extractSEOSegments(string $title): array |
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{ |
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$seoSeparator = $this->getSEOSeparator($title); |
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if (null === $seoSeparator) { |
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return [$title]; |
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} |
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return explode($seoSeparator, $title); |
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} |
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private function getSEOSeparator(string $title): ?string |
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{ |
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if (strpos($title, ' | ') !== false) { |
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return ' | '; |
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} |
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if (strpos($title, ' / ') !== false) { |
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return ' / '; |
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} |
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if (strpos($title, ' - ') !== false) { |
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return ' - '; |
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} |
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if (strpos($title, ' : ') !== false) { |
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return ' : '; |
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} |
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return null; |
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} |
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/** |
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* Remove SEO segments as containing same words as the website domain name. |
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*/ |
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private function deleteSegmentsContainingSitename(string $prettyDomainName, array $seoSegments): array |
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{ |
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// strip string after last dot in prettyDomainName : blabla.com => blabla |
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$siteName = preg_replace('/\.[^.]*$/', '', $prettyDomainName); |
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// strip string if only 2 chars after dot : so 'blabla.co.uk' => blabla |
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$siteName = preg_replace('/\.[^.]{2}$/', '', $siteName); |
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$siteName = TextUtil::stripPunctuation($siteName); // bla-bla => blabla |
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return array_values(array_filter( |
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$seoSegments, |
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function ($segment) use ($prettyDomainName, $siteName) { |
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$strippedSegment = str_replace( |
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[' ', '-'], |
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'', |
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mb_strtolower(TextUtil::stripPunctuation(TextUtil::stripAccents($segment))) |
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); |
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return !empty(trim($segment)) |
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&& false === strpos($strippedSegment, str_replace(['.', '-'], '', $prettyDomainName)) |
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&& false === strpos($strippedSegment, str_replace(['.', '-'], '', $siteName)); |
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} |
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)); |
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} |
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} |
Dispositif /
Wikibot
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