<?php
declare(strict_types=1);
namespace Jfcherng\Diff\Renderer\Html\LineRenderer;
use Jfcherng\Diff\Renderer\RendererConstant;
use Jfcherng\Diff\SequenceMatcher;
use Jfcherng\Diff\Utility\ReverseIterator;
use Jfcherng\Utility\MbString;
final class Char extends AbstractLineRenderer
{
/**
* {@inheritdoc}
*
* @return static
*/
public function render(MbString $mbOld, MbString $mbNew): LineRendererInterface
{
$hunk = $this->getChangedExtentSegments($mbOld->toArray(), $mbNew->toArray());
// reversely iterate hunk
foreach (ReverseIterator::fromArray($hunk) as [$op, $i1, $i2, $j1, $j2]) {
if ($op & (SequenceMatcher::OP_REP | SequenceMatcher::OP_DEL)) {
$mbOld->str_enclose_i(RendererConstant::HTML_CLOSURES, $i1, $i2 - $i1);
}
if ($op & (SequenceMatcher::OP_REP | SequenceMatcher::OP_INS)) {
$mbNew->str_enclose_i(RendererConstant::HTML_CLOSURES, $j1, $j2 - $j1);
}
}
return $this;
}
}