diff --git a/src/ui/NhekoGlobalObject.cpp b/src/ui/NhekoGlobalObject.cpp
index a6f9abe7..3cb6a8a8 100644
--- a/src/ui/NhekoGlobalObject.cpp
+++ b/src/ui/NhekoGlobalObject.cpp
@@ -190,3 +190,63 @@ Nheko::setWindowRole([[maybe_unused]] QWindow *win, [[maybe_unused]] QString new
QXcbWindowFunctions::setWmWindowRole(win, newRole.toUtf8());
#endif
}
+
+QString
+Nheko::getCommandFromText(const QString &text)
+{
+ if (text.startsWith('/')) {
+ int command_end = text.indexOf(QRegularExpression(QStringLiteral("\\s")));
+ if (command_end == -1)
+ command_end = text.size();
+ auto command = text.mid(1, command_end - 1);
+ if (command.isEmpty() || command == QLatin1String("/"))
+ return {};
+ else {
+ return command;
+ }
+ } else
+ return {};
+}
+
+bool
+Nheko::isInvalidCommand(QString command) const
+{
+ if (command.size() <= 0)
+ return false;
+
+ static const QStringList validCommands{QStringLiteral("/me"),
+ QStringLiteral("/react"),
+ QStringLiteral("/join"),
+ QStringLiteral("/knock"),
+ QStringLiteral("/part"),
+ QStringLiteral("/leave"),
+ QStringLiteral("/invite"),
+ QStringLiteral("/kick"),
+ QStringLiteral("/ban"),
+ QStringLiteral("/unban"),
+ QStringLiteral("/redact"),
+ QStringLiteral("/roomnick"),
+ QStringLiteral("/shrug"),
+ QStringLiteral("/fliptable"),
+ QStringLiteral("/unfliptable"),
+ QStringLiteral("/sovietflip"),
+ QStringLiteral("/clear-timeline"),
+ QStringLiteral("/reset-state"),
+ QStringLiteral("/rotate-megolm-session"),
+ QStringLiteral("/md"),
+ QStringLiteral("/cmark"),
+ QStringLiteral("/plain"),
+ QStringLiteral("/rainbow"),
+ QStringLiteral("/rainbowme"),
+ QStringLiteral("/notice"),
+ QStringLiteral("/rainbownotice"),
+ QStringLiteral("/confetti"),
+ QStringLiteral("/rainbowconfetti"),
+ QStringLiteral("/goto"),
+ QStringLiteral("/converttodm"),
+ QStringLiteral("/converttoroom")};
+
+ if (!command.startsWith('/'))
+ command.prepend('/');
+ return !validCommands.contains(command);
+}
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