$this->mergeHtml($originalHtml, $editedHtml), 'css' => $this->mergeCss($originalCss, $editedCss), 'js' => $this->mergeJs($originalJs, $editedJs), ]; } public function mergeHtml(string $originalHtml, string $editedHtml): string { $originalHtml = $this->stripInjectedTools($originalHtml); $editedHtml = $this->stripInjectedTools($editedHtml); $editedBody = $this->restoreMissingScripts( $originalHtml, $this->bodyInner($editedHtml), ); if (! $this->isFullHtmlDocument($originalHtml)) { return $editedBody; } return $this->doctype($originalHtml)."\n" .$this->htmlOpenTag($originalHtml)."\n" .$this->headBlock($originalHtml)."\n" .$this->bodyOpenTag($originalHtml)."\n" .$editedBody."\n" ."\n" .''; } private function mergeCss(string $originalCss, string $editedCss): string { if (trim($editedCss) === '') { return $originalCss; } if (trim($originalCss) === '') { return $editedCss; } if ($this->normalized($editedCss) === $this->normalized($originalCss)) { return $originalCss; } if ($this->editedCssLostOriginal($editedCss, $originalCss)) { return $originalCss; } return $editedCss; } private function mergeJs(string $originalJs, string $editedJs): string { if ($this->containsInjectedTools($editedJs)) { return $originalJs; } if (trim($editedJs) === '') { return $originalJs; } if (trim($editedJs) === trim($originalJs)) { return $originalJs; } return $editedJs; } private function restoreMissingScripts(string $originalHtml, string $editedBody): string { foreach ($this->scriptTags($this->bodyInner($originalHtml)) as $script) { if ($this->containsInjectedTools($script)) { continue; } if (! str_contains($this->normalized($editedBody), $this->normalized($script))) { $editedBody .= "\n".$script; } } return $editedBody; } /** * @return list */ private function scriptTags(string $html): array { if (preg_match_all('/]*>.*?<\/script>/is', $html, $matches) !== false) { return $matches[0]; } return []; } private function isFullHtmlDocument(string $html): bool { return preg_match('/|]/i', $html) === 1; } private function doctype(string $html): string { if (preg_match('/]*>/i', $html, $matches) === 1) { return $matches[0]; } return ''; } private function htmlOpenTag(string $html): string { if (preg_match('/]*>/i', $html, $matches) === 1) { return $matches[0]; } return ''; } private function bodyOpenTag(string $html): string { if (preg_match('/]*>/i', $html, $matches) === 1) { return $matches[0]; } return ''; } private function headBlock(string $html): string { if (preg_match('/]*>.*?<\/head>/is', $html, $matches) === 1) { return $this->stripInjectedTools($matches[0]); } return ''; } private function bodyInner(string $html): string { if (preg_match('/]*>(.*)<\/body>/is', $html, $matches) === 1) { return trim($matches[1]); } $html = (string) preg_replace('/]*>/i', '', $html); $html = (string) preg_replace('/<\/?html\b[^>]*>/i', '', $html); $html = (string) preg_replace('/]*>.*?<\/head>/is', '', $html); $html = (string) preg_replace('/<\/body>/i', '', $html); return trim($html); } private function editedCssLostOriginal(string $editedCss, string $originalCss): bool { if ($this->containsEditorChrome($editedCss) && ! $this->containsEditorChrome($originalCss)) { return true; } $missing = array_diff( $this->cssSelectorNames($originalCss), $this->cssSelectorNames($editedCss), ); if ($missing !== [] && ( $this->containsEditorChrome($editedCss) || strlen($editedCss) > strlen($originalCss) * 1.1 )) { return true; } $originalVars = preg_match_all('/--[A-Za-z_][\w-]*\s*:/', $originalCss); $editedVars = preg_match_all('/--[A-Za-z_][\w-]*\s*:/', $editedCss); if ($originalVars >= 3 && $editedVars < (int) floor($originalVars * 0.6)) { return true; } return strlen($originalCss) > strlen($editedCss) * 1.4 && preg_match('/:root|@media/', $originalCss) === 1 && preg_match('/:root|@media/', $editedCss) !== 1; } private function containsEditorChrome(string $css): bool { return preg_match('/\[data-gjs-type|\.gjs-selected|\.gjs-dashed|scroll-invalid|transition-invalid/', $css) === 1; } /** * @return list */ private function cssSelectorNames(string $css): array { preg_match_all('/\.([A-Za-z_][\w-]*)/', $css, $matches); return array_values(array_unique($matches[1])); } private function stripInjectedTools(string $html): string { $html = (string) preg_replace( '/]*\bid=(["\'])browser-logger-active\1[^>]*>.*?<\/script>/is', '', $html, ); $html = (string) preg_replace( '/]*>[^<]*_boost\/browser-logs.*?<\/script>/is', '', $html, ); return $html; } private function containsInjectedTools(string $value): bool { return str_contains($value, '_boost/browser-logs') || str_contains($value, 'browser-logger-active'); } private function normalized(string $value): string { return (string) preg_replace('/\s+/', ' ', trim($value)); } }