qt: Migrate to Qt6. (#6418)

src/citra_qt/multiplayer/direct_connect.cpp

@@ -5,7 +5,7 @@
 #include <QComboBox>
 #include <QFuture>
 #include <QIntValidator>
-#include <QRegExpValidator>
+#include <QRegularExpression>
 #include <QString>
 #include <QtConcurrent/QtConcurrentRun>
 #include "citra_qt/main.h"

src/citra_qt/multiplayer/validation.h

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include <QRegExp>
+#include <QRegularExpression>
 #include <QString>
 #include <QValidator>
 
@@ -30,15 +30,17 @@ public:
 
 private:
     /// room name can be alphanumeric and " " "_" "." and "-" and must have a size of 4-20
-    QRegExp room_name_regex = QRegExp(QStringLiteral("^[a-zA-Z0-9._- ]{4,20}$"));
-    QRegExpValidator room_name;
+    QRegularExpression room_name_regex =
+        QRegularExpression(QStringLiteral("^[a-zA-Z0-9._\\- ]{4,20}$"));
+    QRegularExpressionValidator room_name;
 
     /// nickname can be alphanumeric and " " "_" "." and "-" and must have a size of 4-20
-    QRegExp nickname_regex = QRegExp(QStringLiteral("^[a-zA-Z0-9._- ]{4,20}$"));
-    QRegExpValidator nickname;
+    QRegularExpression nickname_regex =
+        QRegularExpression(QStringLiteral("^[a-zA-Z0-9._\\- ]{4,20}$"));
+    QRegularExpressionValidator nickname;
 
     /// ipv4 / ipv6 / hostnames
-    QRegExp ip_regex = QRegExp(QStringLiteral(
+    QRegularExpression ip_regex = QRegularExpression(QStringLiteral(
         // IPv4 regex
         "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$|"
         // IPv6 regex
@@ -59,7 +61,7 @@ private:
         "\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))(%.+)?$|"
         // Hostname regex
         "^([a-zA-Z0-9]+(-[a-zA-Z0-9]+)*\\.)+[a-zA-Z]{2,}$"));
-    QRegExpValidator ip;
+    QRegularExpressionValidator ip;
 
     /// port must be between 0 and 65535
     QIntValidator port;