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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\textformatter\s9e;
class autolink_helper
{
/**
* Clean up and invalidate an AUTOLINK_TEXT tag if applicable
*
* @param \s9e\TextFormatter\Parser\Tag $tag AUTOLINK_TEXT tag
* @param \s9e\TextFormatter\Parser $parser Parser
* @return bool Whether the tag is valid
*/
public function cleanup_tag(\s9e\TextFormatter\Parser\Tag $tag, \s9e\TextFormatter\Parser $parser)
{
// Remove the url attribute because it's not needed.
$tag->removeAttribute('url');
// Invalidate if the content of the tag matches the text attribute
$text = substr($parser->getText(), $tag->getPos(), $tag->getLen());
return ($text !== $tag->getAttribute('text'));
}
/**
* Create an AUTOLINK_TEXT tag inside of a link created by the Autolink plugin
*
* Will only apply to URL tags that do not use any markup (e.g. not "[url]")
* on the assumption that those tags were created by the Autolink plugin to
* linkify URLs found in plain text
*
* @param \s9e\TextFormatter\Parser\Tag $tag URL tag (start tag)
* @param \s9e\TextFormatter\Parser $parser Parser
* @return bool Always true to indicate that the tag is valid
*/
public function generate_autolink_text_tag(\s9e\TextFormatter\Parser\Tag $tag, \s9e\TextFormatter\Parser $parser)
{
// If the tag consumes any text then we ignore it because it's not a
// linkified URL. Same if it's not paired with an end tag that doesn't
// consume any text either
if ($tag->getLen() > 0 || !$tag->getEndTag())
{
return true;
}
// Capture the text between the start tag and its end tag
$start = $tag->getPos();
$end = $tag->getEndTag()->getPos();
$length = $end - $start;
$text = substr($parser->getText(), $start, $length);
// Create a tag that consumes the link's text
$parser->addSelfClosingTag('AUTOLINK_TEXT', $start, $length)->setAttribute('text', $text);
return true;
}
/**
* Remove the board's root URL from a the start of a string
*
* @param \s9e\TextFormatter\Parser\Tag $tag AUTOLINK_TEXT tag
* @param string $board_url Forum's root URL (with trailing slash)
* @return bool Always true to indicate that the tag is valid
*/
public function truncate_local_url(\s9e\TextFormatter\Parser\Tag $tag, $board_url)
{
$text = $tag->getAttribute('text');
if (stripos($text, $board_url) === 0 && strlen($text) > strlen($board_url))
{
$tag->setAttribute('text', substr($text, strlen($board_url)));
}
return true;
}
/**
* Truncate the replacement text set in an AUTOLINK_TEXT tag
*
* @param \s9e\TextFormatter\Parser\Tag $tag AUTOLINK_TEXT tag
* @return bool Always true to indicate that the tag is valid
*/
public function truncate_text(\s9e\TextFormatter\Parser\Tag $tag)
{
$text = $tag->getAttribute('text');
if (utf8_strlen($text) > 55)
{
$text = utf8_substr($text, 0, 39) . ' ... ' . utf8_substr($text, -10);
}
$tag->setAttribute('text', $text);
return true;
}
}
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