Viewing file:  FencedCodeParser.php (2.72 KB) -rwxrwxr-x
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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\CommonMark\Parser\Block;
use League\CommonMark\Extension\CommonMark\Node\Block\FencedCode;
use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
use League\CommonMark\Parser\Block\BlockContinue;
use League\CommonMark\Parser\Block\BlockContinueParserInterface;
use League\CommonMark\Parser\Cursor;
use League\CommonMark\Util\ArrayCollection;
use League\CommonMark\Util\RegexHelper;
final class FencedCodeParser extends AbstractBlockContinueParser
{
/** @psalm-readonly */
private FencedCode $block;
/** @var ArrayCollection<string> */
private ArrayCollection $strings;
public function __construct(int $fenceLength, string $fenceChar, int $fenceOffset)
{
$this->block = new FencedCode($fenceLength, $fenceChar, $fenceOffset);
$this->strings = new ArrayCollection();
}
public function getBlock(): FencedCode
{
return $this->block;
}
public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
{
// Check for closing code fence
if (! $cursor->isIndented() && $cursor->getNextNonSpaceCharacter() === $this->block->getChar()) {
$match = RegexHelper::matchFirst('/^(?:`{3,}|~{3,})(?= *$)/', $cursor->getLine(), $cursor->getNextNonSpacePosition());
if ($match !== null && \strlen($match[0]) >= $this->block->getLength()) {
// closing fence - we're at end of line, so we can finalize now
return BlockContinue::finished();
}
}
// Skip optional spaces of fence offset
// Optimization: don't attempt to match if we're at a non-space position
if ($cursor->getNextNonSpacePosition() > $cursor->getPosition()) {
$cursor->match('/^ {0,' . $this->block->getOffset() . '}/');
}
return BlockContinue::at($cursor);
}
public function addLine(string $line): void
{
$this->strings[] = $line;
}
public function closeBlock(): void
{
// first line becomes info string
$firstLine = $this->strings->first();
if ($firstLine === false) {
$firstLine = '';
}
$this->block->setInfo(RegexHelper::unescape(\trim($firstLine)));
if ($this->strings->count() === 1) {
$this->block->setLiteral('');
} else {
$this->block->setLiteral(\implode("\n", $this->strings->slice(1)) . "\n");
}
}
}
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