<?php

declare(strict_types=1);

/*
 * This is part of the league/commonmark package.
 *
 * (c) Martin Hasoň <martin.hason@gmail.com>
 * (c) Webuni s.r.o. <info@webuni.cz>
 * (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\Table;

use League\CommonMark\Parser\Block\BlockStart;
use League\CommonMark\Parser\Block\BlockStartParserInterface;
use League\CommonMark\Parser\Block\ParagraphParser;
use League\CommonMark\Parser\Cursor;
use League\CommonMark\Parser\MarkdownParserStateInterface;

final class TableStartParser implements BlockStartParserInterface
{
    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
    {
        $paragraph = $parserState->getParagraphContent();
        if ($paragraph === null || \strpos($paragraph, '|') === false) {
            return BlockStart::none();
        }

        $columns = self::parseSeparator($cursor);
        if (\count($columns) === 0) {
            return BlockStart::none();
        }

        $lines    = \explode("\n", $paragraph);
        $lastLine = \array_pop($lines);

        $headerCells = TableParser::split($lastLine);
        if (\count($headerCells) > \count($columns)) {
            return BlockStart::none();
        }

        $cursor->advanceToEnd();

        $parsers = [];

        if (\count($lines) > 0) {
            $p = new ParagraphParser();
            $p->addLine(\implode("\n", $lines));
            $parsers[] = $p;
        }

        $parsers[] = new TableParser($columns, $headerCells);

        return BlockStart::of(...$parsers)
            ->at($cursor)
            ->replaceActiveBlockParser();
    }

    /**
     * @return array<int, string|null>
     *
     * @psalm-return array<int, TableCell::ALIGN_*|null>
     *
     * @phpstan-return array<int, TableCell::ALIGN_*|null>
     */
    private static function parseSeparator(Cursor $cursor): array
    {
        $columns = [];
        $pipes   = 0;
        $valid   = false;

        while (! $cursor->isAtEnd()) {
            switch ($c = $cursor->getCurrentCharacter()) {
                case '|':
                    $cursor->advanceBy(1);
                    $pipes++;
                    if ($pipes > 1) {
                        // More than one adjacent pipe not allowed
                        return [];
                    }

                    // Need at least one pipe, even for a one-column table
                    $valid = true;
                    break;
                case '-':
                case ':':
                    if ($pipes === 0 && \count($columns) > 0) {
                        // Need a pipe after the first column (first column doesn't need to start with one)
                        return [];
                    }

                    $left  = false;
                    $right = false;
                    if ($c === ':') {
                        $left = true;
                        $cursor->advanceBy(1);
                    }

                    if ($cursor->match('/^-+/') === null) {
                        // Need at least one dash
                        return [];
                    }

                    if ($cursor->getCurrentCharacter() === ':') {
                        $right = true;
                        $cursor->advanceBy(1);
                    }

                    $columns[] = self::getAlignment($left, $right);
                    // Next, need another pipe
                    $pipes = 0;
                    break;
                case ' ':
                case "\t":
                    // White space is allowed between pipes and columns
                    $cursor->advanceToNextNonSpaceOrTab();
                    break;
                default:
                    // Any other character is invalid
                    return [];
            }
        }

        if (! $valid) {
            return [];
        }

        return $columns;
    }

    /**
     * @psalm-return TableCell::ALIGN_*|null
     *
     * @phpstan-return TableCell::ALIGN_*|null
     *
     * @psalm-pure
     */
    private static function getAlignment(bool $left, bool $right): ?string
    {
        if ($left && $right) {
            return TableCell::ALIGN_CENTER;
        }

        if ($left) {
            return TableCell::ALIGN_LEFT;
        }

        if ($right) {
            return TableCell::ALIGN_RIGHT;
        }

        return null;
    }
}

• [F] Table.php
  Delete
• [F] TableCell.php
  Delete
• [F] TableCellRenderer.php
  Delete
• [F] TableExtension.php
  Delete
• [F] TableParser.php
  Delete
• [F] TableRenderer.php
  Delete
• [F] TableRow.php
  Delete
• [F] TableRowRenderer.php
  Delete
• [F] TableSection.php
  Delete
• [F] TableSectionRenderer.php
  Delete
• [F] TableStartParser.php
  Delete

Contact Section

Get in Touch with Us for Any Questions or Support

We’d love to hear from you! Whether you have questions, feedback, or need support, our team is here to help. Reach out to us via email, phone, or visit our office. We’re committed to providing you with exceptional service and ensuring your experience with NFC Pay is seamless and satisfying. Let’s connect!

Name*

Email*

Message*

Send Message

Our Location

20-22 Wenlock Road, England, N1 7GU

Call us on: +03601 885399

Our office hours Monday–Friday, 9am - 9pm

Email us directly

support@example.com