From f8040a1bf6de26abe3a0cc1c64b9608f5bd2fdea Mon Sep 17 00:00:00 2001
From: James Graham <james.h.graham@protonmail.com>
Date: Sat, 15 Apr 2023 07:59:05 +0000
Subject: [PATCH] Guard getTagType and isCloseTag

Add guard clauses for getTagType and isCloseTag to avoid crashing if the string is empty.

CCBUG: 468448
---
 src/texthandler.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/texthandler.cpp b/src/texthandler.cpp
index 8417bddfc..5d6a1f576 100644
--- a/src/texthandler.cpp
+++ b/src/texthandler.cpp
@@ -280,6 +280,9 @@ void TextHandler::nextTokenType()
 
 QString TextHandler::getTagType() const
 {
+    if (m_nextToken.isEmpty()) {
+        return QString();
+    }
     const int tagTypeStart = m_nextToken[1] == u'/' ? 2 : 1;
     const int tagTypeEnd = m_nextToken.indexOf(TextRegex::endTagType, tagTypeStart);
     return m_nextToken.mid(tagTypeStart, tagTypeEnd - tagTypeStart);
@@ -287,6 +290,9 @@ QString TextHandler::getTagType() const
 
 bool TextHandler::isCloseTag() const
 {
+    if (m_nextToken.isEmpty()) {
+        return false;
+    }
     return m_nextToken[1] == u'/';
 }