Introduce CommonMarkParser

composer.json

@@ -17,6 +17,7 @@
         "cache/void-adapter": "^1.1",
         "jakeasmith/http_build_url": "^1",
         "jbbcode/jbbcode": "^1.4",
+        "league/commonmark": "^2.0",
         "youthweb/urllinker": "^1.4"
     },
     "require-dev": {

src/Extension/BBCode/BBCodeExtension.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * A BBCode-to-HTML parser for youthweb.net
+ * Copyright (C) 2016-2021  Youthweb e.V. <[email protected]>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Youthweb\BBCodeParser\Extension\BBCode;
+
+use League\CommonMark\Environment\EnvironmentBuilderInterface;
+use League\CommonMark\Extension\ExtensionInterface;
+use League\CommonMark\Node as CoreNode;
+use League\CommonMark\Parser as CoreParser;
+use League\CommonMark\Renderer as CoreRenderer;
+use Youthweb\BBCodeParser\Extension\BBCode\Delimiter\Processor\EmphasisDelimiterProcessor;
+
+/**
+ * BBCodeExtension
+ */
+final class BBCodeExtension implements ExtensionInterface
+{
+    public function register(EnvironmentBuilderInterface $environment): void
+    {
+        $environment
+            ->addBlockStartParser(new Parser\Block\BoldBlockStartParser(),      40)
+
+            ->addInlineParser(new CoreParser\Inline\NewlineParser(), 200)
+
+            ->addRenderer(CoreNode\Block\Document::class,  new CoreRenderer\Block\DocumentRenderer(),  0)
+            ->addRenderer(Node\Block\BoldBlock::class,     new Renderer\Block\BoldBlockRenderer(),     0)
+            ->addRenderer(CoreNode\Block\Paragraph::class, new CoreRenderer\Block\ParagraphRenderer(), 0)
+
+            ->addRenderer(CoreNode\Inline\Text::class,    new CoreRenderer\Inline\TextRenderer(),    0)
+        ;
+    }
+}

src/Extension/BBCode/Node/Block/BoldBlock.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * A BBCode-to-HTML parser for youthweb.net
+ * Copyright (C) 2016-2021  Youthweb e.V. <[email protected]>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Youthweb\BBCodeParser\Extension\BBCode\Node\Block;
+
+use League\CommonMark\Node\Block\AbstractBlock;
+use League\CommonMark\Node\RawMarkupContainerInterface;
+use League\CommonMark\Node\StringContainerInterface;
+
+final class BoldBlock extends AbstractBlock implements RawMarkupContainerInterface, StringContainerInterface
+{
+    private string $literal = '';
+
+    public function getLiteral(): string
+    {
+        return $this->literal;
+    }
+
+    public function setLiteral(string $literal): void
+    {
+        $this->literal = $literal;
+    }
+}

src/Extension/BBCode/Parser/Block/BoldBlockParser.php

@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * A BBCode-to-HTML parser for youthweb.net
+ * Copyright (C) 2016-2021  Youthweb e.V. <[email protected]>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Youthweb\BBCodeParser\Extension\BBCode\Parser\Block;
+
+use League\CommonMark\Parser\Block\AbstractBlockContinueParser;
+use League\CommonMark\Parser\Block\BlockContinue;
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Block\BlockContinueParserWithInlinesInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\InlineParserEngineInterface;
+use League\CommonMark\Util\RegexHelper;
+use Youthweb\BBCodeParser\Extension\BBCode\Node\Block\BoldBlock;
+
+final class BoldBlockParser extends AbstractBlockContinueParser implements BlockContinueParserWithInlinesInterface
+{
+    private BoldBlock $block;
+
+    private string $content = '';
+
+    private bool $finished = false;
+
+    public function __construct()
+    {
+        $this->block = new BoldBlock();
+    }
+
+    public function getBlock(): BoldBlock
+    {
+        return $this->block;
+    }
+
+    public function tryContinue(Cursor $cursor, BlockContinueParserInterface $activeBlockParser): ?BlockContinue
+    {
+        if ($cursor->getNextNonSpaceCharacter() !== '[') {
+            return BlockContinue::at($cursor);
+        }
+
+        $tmpCursor = clone $cursor;
+        $tmpCursor->advanceToNextNonSpaceOrTab();
+        $line = $tmpCursor->getSubstring(0, 4);
+
+        if ($line === '[/b]') {
+            return BlockStart::none();
+        }
+
+        return BlockContinue::at($cursor);
+    }
+
+    public function addLine(string $line): void
+    {
+        if ($this->content !== '') {
+            $this->content .= "\n";
+        }
+
+        $line = substr($line, 0, -4);
+
+        $this->content .= $line;
+    }
+
+    public function closeBlock(): void
+    {
+        $this->block->setLiteral($this->content);
+        $this->content = '';
+    }
+
+    /**
+     * Parse any inlines inside of the current block
+     */
+    public function parseInlines(InlineParserEngineInterface $inlineParser): void
+    {
+        // #TODO
+    }
+}

src/Extension/BBCode/Parser/Block/BoldBlockStartParser.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * A BBCode-to-HTML parser for youthweb.net
+ * Copyright (C) 2016-2021  Youthweb e.V. <[email protected]>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Youthweb\BBCodeParser\Extension\BBCode\Parser\Block;
+
+use League\CommonMark\Parser\Block\BlockStart;
+use League\CommonMark\Parser\Block\BlockStartParserInterface;
+use League\CommonMark\Parser\Cursor;
+use League\CommonMark\Parser\MarkdownParserStateInterface;
+use League\CommonMark\Util\RegexHelper;
+
+final class BoldBlockStartParser implements BlockStartParserInterface
+{
+    public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart
+    {
+        if ($cursor->isIndented() || $cursor->getNextNonSpaceCharacter() !== '[') {
+            return BlockStart::none();
+        }
+
+        $tmpCursor = clone $cursor;
+        $tmpCursor->advanceToNextNonSpaceOrTab();
+        $line = $tmpCursor->getSubstring(0, 3);
+
+        if ($line !== '[b]') {
+            return BlockStart::none();
+        }
+
+        $cursor->advanceBy(3);
+
+        return BlockStart::of(new BoldBlockParser())->at($cursor);
+    }
+}

src/Extension/BBCode/Renderer/Block/BoldBlockRenderer.php

@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * A BBCode-to-HTML parser for youthweb.net
+ * Copyright (C) 2016-2021  Youthweb e.V. <[email protected]>
+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Youthweb\BBCodeParser\Extension\BBCode\Renderer\Block;
+
+use League\CommonMark\Node\Node;
+use League\CommonMark\Renderer\ChildNodeRendererInterface;
+use League\CommonMark\Renderer\NodeRendererInterface;
+use League\CommonMark\Util\HtmlElement;
+use League\CommonMark\Xml\XmlNodeRendererInterface;
+use League\Config\ConfigurationAwareInterface;
+use League\Config\ConfigurationInterface;
+use Youthweb\BBCodeParser\Extension\BBCode\Node\Block\BoldBlock;
+
+final class BoldBlockRenderer implements NodeRendererInterface, XmlNodeRendererInterface, ConfigurationAwareInterface
+{
+    private ConfigurationInterface $config;
+
+    /**
+     * @param BoldBlock $node
+     *
+     * {@inheritDoc}
+     */
+    public function render(Node $node, ChildNodeRendererInterface $childRenderer): HtmlElement
+    {
+        BoldBlock::assertInstanceOf($node);
+
+        $innerHtml = $childRenderer->renderNodes($node->children());
+
+        if ($innerHtml === '') {
+            $innerHtml = $node->getLiteral();
+        }
+
+        return new HtmlElement('b', [], $innerHtml);
+    }
+
+    public function setConfiguration(ConfigurationInterface $configuration): void
+    {
+        $this->config = $configuration;
+    }
+
+    public function getXmlTagName(Node $node): string
+    {
+        return 'strong';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getXmlAttributes(Node $node): array
+    {
+        return [];
+    }
+}