Primo Committ

vendor/league/commonmark/src/Input/MarkdownInput.php

@@ -0,0 +1,82 @@
+<?php
+
+/*
+ * 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\Input;
+
+use League\CommonMark\Exception\UnexpectedEncodingException;
+
+final class MarkdownInput implements MarkdownInputInterface
+{
+    /** @var array<int, string>|null */
+    private $lines;
+
+    /** @var string */
+    private $content;
+
+    /** @var int|null */
+    private $lineCount;
+
+    public function __construct(string $content)
+    {
+        if (!\mb_check_encoding($content, 'UTF-8')) {
+            throw new UnexpectedEncodingException('Unexpected encoding - UTF-8 or ASCII was expected');
+        }
+
+        $this->content = $content;
+    }
+
+    public function getContent(): string
+    {
+        return $this->content;
+    }
+
+    /**
+     * @return \Traversable<int, string>
+     */
+    public function getLines(): \Traversable
+    {
+        $this->splitLinesIfNeeded();
+
+        foreach ($this->lines as $lineNumber => $line) {
+            yield $lineNumber => $line;
+        }
+    }
+
+    public function getLineCount(): int
+    {
+        $this->splitLinesIfNeeded();
+
+        return $this->lineCount;
+    }
+
+    private function splitLinesIfNeeded(): void
+    {
+        if ($this->lines !== null) {
+            return;
+        }
+
+        $lines = \preg_split('/\r\n|\n|\r/', $this->content);
+        if ($lines === false) {
+            throw new UnexpectedEncodingException('Failed to split Markdown content by line');
+        }
+
+        $this->lines = $lines;
+
+        // Remove any newline which appears at the very end of the string.
+        // We've already split the document by newlines, so we can simply drop
+        // any empty element which appears on the end.
+        if (\end($this->lines) === '') {
+            \array_pop($this->lines);
+        }
+
+        $this->lineCount = \count($this->lines);
+    }
+}