Implement FencedCode

2023-08-10 21:13:06 +03:00 · 2019-01-20 02:26:41 +00:00
parent 194c916c6a
commit 57c6350184
2 changed files with 117 additions and 72 deletions
--- a/src/Components/Blocks/FencedCode.php
+++ b/src/Components/Blocks/FencedCode.php
@@ -0,0 +1,117 @@
+<?php
+
+namespace Erusev\Parsedown\Components\Blocks;
+
+use Erusev\Parsedown\AST\StateRenderable;
+use Erusev\Parsedown\Components\Block;
+use Erusev\Parsedown\Components\ContinuableBlock;
+use Erusev\Parsedown\Html\Renderables\Element;
+use Erusev\Parsedown\Html\Renderables\Text;
+use Erusev\Parsedown\Parsedown;
+use Erusev\Parsedown\Parsing\Context;
+use Erusev\Parsedown\State;
+
+final class FencedCode implements ContinuableBlock
+{
+    use ContinuableBlockDefaultInterrupt, BlockAcquisition;
+
+    /** @var string */
+    private $code;
+
+    /** @var string */
+    private $infostring;
+
+    /** @var string */
+    private $marker;
+
+    /** @var int */
+    private $openerLength;
+
+    /** @var bool */
+    private $isComplete;
+
+    /**
+     * @param string $code
+     * @param string $infostring
+     * @param string $marker
+     * @param int $openerLength
+     * @param bool $isComplete
+     */
+    public function __construct($code, $infostring, $marker, $openerLength, $isComplete)
+    {
+        $this->code = $code;
+        $this->infostring = $infostring;
+        $this->marker = $marker;
+        $this->openerLength = $openerLength;
+        $this->isComplete = $isComplete;
+    }
+
+    /**
+     * @param Context $Context
+     * @param Block|null $Block
+     * @param State|null $State
+     * @return static|null
+     */
+    public static function build(
+        Context $Context,
+        Block $Block = null,
+        State $State = null
+    ) {
+        $marker = $Context->line()->text()[0];
+
+        $openerLength = \strspn($Context->line()->text(), $marker);
+
+        if ($openerLength < 3) {
+            return null;
+        }
+
+        $infostring = \trim(\substr($Context->line()->text(), $openerLength), "\t ");
+
+        if (\strpos($infostring, '`') !== false) {
+            return null;
+        }
+
+        return new self('', $infostring, $marker, $openerLength, false);
+    }
+
+    /**
+     * @param Context $Context
+     * @return self|null
+     */
+    public function continue(Context $Context)
+    {
+        if ($this->isComplete) {
+            return null;
+        }
+
+        $newCode = $this->code;
+
+        if ($Context->previousEmptyLines() > 0) {
+            $newCode .= \str_repeat("\n", $Context->previousEmptyLines());
+        }
+
+        if (($len = \strspn($Context->line()->text(), $this->marker)) >= $this->openerLength
+            and \chop(\substr($Context->line()->text(), $len), ' ') === ''
+        ) {
+            $newCode = \substr($newCode, 1);
+
+            return new self($newCode, $this->infostring, $this->marker, $this->openerLength, true);
+        }
+
+        $newCode .= "\n" . $Context->line()->rawLine();
+
+        return new self($newCode, $this->infostring, $this->marker, $this->openerLength, false);
+    }
+
+    /**
+     * @return Element
+     */
+    public function stateRenderable(Parsedown $_)
+    {
+        return new Element('pre', [], [new Element(
+            'code',
+            $this->infostring !== '' ? ['class' => "language-{$this->infostring}"] : [],
+            [new Text($this->code)]
+        )]);
+    }
+}