Viewing file:  MarkdownInput.php (1.96 KB) -rw-r--r--
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<?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);
}
}
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