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<?php
namespace Bitrix\Landing\Note\Source;
use \Bitrix\Main\Web\DOM;
use \Bitrix\Landing\Manager;
use \Bitrix\Landing\File;
class Parser
{
/**
* Download URL for files in text.
*/
const ACTION_DOWNLOAD_FILE = '/bitrix/tools/disk/uf.php?attachedId=#attachedId#&action=download&ncc=1';
/**
* Returns converted to html bb text.
* @param string $text Text to convert.
* @return string
*/
protected static function convertText(string $text): string
{
static $parser = null;
if ($parser === null)
{
$parser = new \CTextParser;
$parser->allow['SMILES'] = 'N';
}
// prepare before parsing
$text = preg_replace('#\[P\]\s*\[VIDEO#s', '[VIDEO', $text);
$text = preg_replace('#\[/VIDEO\]\s*\[/P\]#s', '[/VIDEO]', $text);
$text = $parser->convertText($text);
// prepare after parsing
$text = preg_replace('#<p>\s*</p>#s', '<br/>', $text);
return $text;
}
/**
* Returns video data by video src.
* @param string $videoSrc Video source url.
* @return array|null
*/
protected static function getVideoContent(string $videoSrc): ?array
{
if (preg_match('#^//www.youtube.com/embed/([^?]+)#i', $videoSrc, $matches))
{
$ytCode = $matches[1];
return [
'src' => $videoSrc,
'source' => 'https://www.youtube.com/watch?v=' . $ytCode,
'preview' => '//img.youtube.com/vi/' .$ytCode . '/sddefault.jpg'
];
}
return null;
}
/**
* Returns img content by attache id.
* @param int|string $attacheId Attache id.
* @param array $files Files array.
* @return array|null
*/
protected static function getImgContent($attacheId, array $files = []): ?array
{
if (isset($files[$attacheId]))
{
$fileItem = $files[$attacheId];
$file = \CFile::getFileArray($fileItem['file_id']);
if (strpos($file['CONTENT_TYPE'], 'image/') === 0)
{
$fileIO = new \Bitrix\Main\IO\File(
Manager::getDocRoot() . $file['SRC']
);
if ($fileIO->isExists())
{
$newFile = Manager::savePicture([
$fileItem['file_name'],
base64_encode($fileIO->getContents())
]);
if ($newFile)
{
return [
'id' => $newFile['ID'],
'src' => File::getFilePath($newFile['ID'])
];
}
}
}
}
return null;
}
/**
* Replaces files in text content.
* @param string $text Content.
* @param array $files Files array.
* @return string
*/
protected static function replaceFilesInContent(string $text, array $files = []): string
{
$replace = [];
foreach ($files as $fId => $item)
{
if ($item['prefix'])
{
$actionUrl = str_replace(
'#attachedId#',
$item['id'],
self::ACTION_DOWNLOAD_FILE
);
$replace['[DISK FILE ID=' . $fId . ']'] =
'<a href="' . $actionUrl . '" target="_blank">' .
$item['file_name'] .
'</a>';
}
}
if ($replace)
{
$text = str_replace(
array_keys($replace),
array_values($replace),
$text
);
}
return $text;
}
/**
* Returns block info from DOM Node.
* @param DOM\Node $node Node instance.
* @param array $params Additional params.
* @return array|null
*/
protected static function getBlockFromNode(\Bitrix\Main\Web\DOM\Node $node, array $params = []): ?array
{
$type = 'text';
$content = $node->getOuterHTML();
$attrs = $node->getAttributes();
// quote / code
if (isset($attrs['class']) && in_array($attrs['class']->getValue(), ['quote', 'code']))
{
$type = $attrs['class']->getValue();
$regExp = '#^<div class="' . $type . '">\s*<table class="' . $type . '"><tr><td>' .
'(.*?)</td></tr></table></div>$#is';
if (preg_match($regExp, $content, $matches))
{
$content = $matches[1];
}
if ($type == 'code' && preg_match('#^<pre>(.*?)</pre>$#is', $content, $matches))
{
$content = $matches[1];
}
}
// table
else if (isset($attrs['class']) && $attrs['class']->getValue() == 'data-table')
{
$type = 'table';
}
// video
else if (($node->getNodeName() == 'IFRAME') && isset($attrs['src']))
{
$type = 'video';
$content = self::getVideoContent(
$attrs['src']->getValue()
);
}
// picture / file on a single line
else if (preg_match('/^\[DISK FILE ID=([^\]]+)\]/is', trim($content), $matches))
{
$type = 'img';
$content = self::getImgContent($matches[1], $params['files']);;
}
// replace files in content
if (
$type == 'text' &&
isset($params['files']) &&
is_array($params['files'])
)
{
$content = self::replaceFilesInContent($content, $params['files']);
}
if ($content)
{
return [
'type' => $type,
'content' => $content
];
}
return null;
}
/**
* Converts bb text to semantic blocks.
* @param string $text BB text.
* @param array $params Additional params.
* @return array
*/
public static function textToBlocks(string $text, array $params = []): array
{
$count = -1;
$blocks = [];
$dom = new DOM\Document;
$text = self::convertText($text);
$dom->loadHTML($text);
foreach ($dom->getChildNodesArray() as $child)
{
$bewBlock = self::getBlockFromNode($child, $params);
if ($bewBlock)
{
if (
$blocks &&
$bewBlock['type'] == 'text' &&
$blocks[$count]['type'] == 'text'
)
{
$blocks[$count]['content'] .= $bewBlock['content'];
}
else
{
$count++;
$blocks[] = $bewBlock;
}
}
}
// trim block content
foreach ($blocks as $key => $item)
{
if ($item['type'] == 'text')
{
if (!trim(str_replace(['<br />', '<br/>'], '', $item['content'])))
{
unset($blocks[$key]);
}
}
}
return array_values($blocks);
}
}