From c8d4d2c4c18980cbbe9a50913605bb4cb541afae Mon Sep 17 00:00:00 2001
From: Trevor Slocum <trevor@rocketnine.space>
Date: Tue, 24 Jul 2018 16:46:58 -0700
Subject: [PATCH] Add TINYIB_WORDBREAK - resolves #60

---
 imgboard.php         | 16 +++++++++++-----
 inc/defines.php      |  4 ++++
 inc/functions.php    | 16 ++++++++++++----
 inc/html.php         |  2 +-
 settings.default.php |  1 +
 5 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/imgboard.php b/imgboard.php
index d4b0c3a..14a3e97 100644
--- a/imgboard.php
+++ b/imgboard.php
@@ -86,19 +86,25 @@ if (isset($_POST['message']) || isset($_POST['file'])) {
 	}
 
 	$post = newPost(setParent());
+	$rawposttext = '';
+
 	$post['ip'] = $_SERVER['REMOTE_ADDR'];
-
 	list($post['name'], $post['tripcode']) = nameAndTripcode($_POST['name']);
-
 	$post['name'] = cleanString(substr($post['name'], 0, 75));
 	$post['email'] = cleanString(str_replace('"', '&quot;', substr($_POST['email'], 0, 75)));
 	$post['subject'] = cleanString(substr($_POST['subject'], 0, 75));
+	$post['message'] = $_POST['message'];
 	if ($rawpost) {
+		// Treat message as raw HTML
 		$rawposttext = ($isadmin) ? ' <span style="color: red;">## Admin</span>' : ' <span style="color: purple;">## Mod</span>';
-		$post['message'] = $_POST['message']; // Treat message as raw HTML
 	} else {
-		$rawposttext = '';
-		$post['message'] = str_replace("\n", '<br>', makeLinksClickable(colorQuote(postLink(cleanString(rtrim($_POST['message']))))));
+		if (TINYIB_WORDBREAK > 0) {
+			$post['message'] = preg_replace('/([^\s]{' . TINYIB_WORDBREAK . '})(?=[^\s])/', '$1'.TINYIB_WORDBREAK_IDENTIFIER, $post['message']);
+		}
+		$post['message'] = str_replace("\n", '<br>', makeLinksClickable(colorQuote(postLink(cleanString(rtrim($post['message']))))));
+		if (TINYIB_WORDBREAK > 0) {
+			$post['message'] = finishWordBreak($post['message']);
+		}
 	}
 	$post['password'] = ($_POST['password'] != '') ? md5(md5($_POST['password'])) : '';
 	$post['nameblock'] = nameBlock($post['name'], $post['tripcode'], $post['email'], time(), $rawposttext);
diff --git a/inc/defines.php b/inc/defines.php
index 4b7f24b..f54003a 100644
--- a/inc/defines.php
+++ b/inc/defines.php
@@ -6,6 +6,7 @@ if (!defined('TINYIB_BOARD')) {
 define('TINYIB_NEWTHREAD', '0');
 define('TINYIB_INDEXPAGE', false);
 define('TINYIB_RESPAGE', true);
+define('TINYIB_WORDBREAK_IDENTIFIER', '@!@TINYIB_WORDBREAK@!@');
 
 // The following are provided for backward compatibility and should not be relied upon
 // Copy new settings from settings.default.php to settings.php
@@ -36,6 +37,9 @@ if (!defined('TINYIB_REQMOD')) {
 if (!defined('TINYIB_ALWAYSNOKO')) {
 	define('TINYIB_ALWAYSNOKO', false);
 }
+if (!defined('TINYIB_WORDBREAK')) {
+	define('TINYIB_WORDBREAK', 0);
+}
 if (!defined('TINYIB_TIMEZONE')) {
 	define('TINYIB_TIMEZONE', '');
 }
diff --git a/inc/functions.php b/inc/functions.php
index c593835..5798295 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -35,7 +35,7 @@ if (TINYIB_DBMODE == 'pdo' && TINYIB_DBDRIVER == 'pgsql') {
 	CREATE INDEX ON "' . TINYIB_DBPOSTS . '"("bumped");
 	CREATE INDEX ON "' . TINYIB_DBPOSTS . '"("stickied");
 	CREATE INDEX ON "' . TINYIB_DBPOSTS . '"("moderated");';
-	
+
 	$bans_sql = 'CREATE TABLE "' . TINYIB_DBBANS . '" (
 		"id" bigserial NOT NULL,
 		"ip" varchar(39) NOT NULL,
@@ -77,7 +77,7 @@ if (TINYIB_DBMODE == 'pdo' && TINYIB_DBDRIVER == 'pgsql') {
 		KEY `stickied` (`stickied`),
 		KEY `moderated` (`moderated`)
 	)";
-	
+
 	$bans_sql = "CREATE TABLE `" . TINYIB_DBBANS . "` (
 		`id` mediumint(7) unsigned NOT NULL auto_increment,
 		`ip` varchar(39) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
@@ -90,8 +90,8 @@ if (TINYIB_DBMODE == 'pdo' && TINYIB_DBDRIVER == 'pgsql') {
 }
 
 function cleanString($string) {
-	$search = array("<", ">");
-	$replace = array("&lt;", "&gt;");
+	$search = array("&", "<", ">");
+	$replace = array("&amp;", "&lt;", "&gt;");
 
 	return str_replace($search, $replace, $string);
 }
@@ -249,6 +249,14 @@ function postLink($message) {
 	return preg_replace_callback('/&gt;&gt;([0-9]+)/', '_postLink', $message);
 }
 
+function _finishWordBreak($matches) {
+	return '<a' . $matches[1] . 'href="' . str_replace(TINYIB_WORDBREAK_IDENTIFIER, '', $matches[2]) . '"' . $matches[3] . '>' . str_replace(TINYIB_WORDBREAK_IDENTIFIER, '<br>', $matches[4]) . '</a>';
+}
+
+function finishWordBreak($message) {
+	return str_replace(TINYIB_WORDBREAK_IDENTIFIER, '<br>', preg_replace_callback('/<a(.*?)href="([^"]*?)"(.*?)>(.*?)<\/a>/', '_finishWordBreak', $message));
+}
+
 function colorQuote($message) {
 	if (substr($message, -1, 1) != "\n") {
 		$message .= "\n";
diff --git a/inc/html.php b/inc/html.php
index 2a58281..3aab2ad 100644
--- a/inc/html.php
+++ b/inc/html.php
@@ -74,7 +74,7 @@ function buildPostForm($parent, $raw_post = false) {
 	global $tinyib_uploads, $tinyib_embeds;
 
 	$form_action = 'imgboard.php';
-	$form_extra = '<input type="hidden" name="parent" value="' . $parent . '"">';
+	$form_extra = '<input type="hidden" name="parent" value="' . $parent . '">';
 	$input_extra = '';
 	$rules_extra = '';
 	if ($raw_post) {
diff --git a/settings.default.php b/settings.default.php
index 3a7836e..83a951c 100644
--- a/settings.default.php
+++ b/settings.default.php
@@ -25,6 +25,7 @@ define('TINYIB_LOGO', '');            // Logo HTML
 define('TINYIB_THREADSPERPAGE', 10);  // Amount of threads shown per index page
 define('TINYIB_PREVIEWREPLIES', 3);   // Amount of replies previewed on index pages
 define('TINYIB_TRUNCATE', 15);        // Messages are truncated to this many lines on board index pages  [0 to disable]
+define('TINYIB_WORDBREAK', 80);       // Words longer than this many characters will be broken apart  [0 to disable]
 define('TINYIB_TIMEZONE', 'UTC');     // See https://secure.php.net/manual/en/timezones.php - e.g. America/Los_Angeles
 
 // Post control