1 files changed, 105 insertions, 0 deletions
diff --git a/phpBB/phpbb/textformatter/s9e/autolink_helper.php b/phpBB/phpbb/textformatter/s9e/autolink_helper.php
new file mode 100644
index 0000000000..8fb171f413
--- /dev/null
+++ b/phpBB/phpbb/textformatter/s9e/autolink_helper.php
@@ -0,0 +1,105 @@
+<?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;
+	}
+}