[skip ci] Tools: add XML format tool

src/Tools/xmlformat/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.14)
+
+project(xmlformat LANGUAGES CXX)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Core Xml REQUIRED)
+find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Xml REQUIRED)
+
+add_executable(xmlformat
+    main.cpp
+)
+target_link_libraries(xmlformat Qt${QT_VERSION_MAJOR}::Core
+                                Qt${QT_VERSION_MAJOR}::Xml)

src/Tools/xmlformat/main.cpp

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+/***************************************************************************
+ *   Copyright (c) 2023 Werner Mayer <wmayer[at]users.sourceforge.net>     *
+ *                                                                         *
+ *   This file is part of FreeCAD.                                         *
+ *                                                                         *
+ *   FreeCAD is free software: you can redistribute it and/or modify it    *
+ *   under the terms of the GNU Lesser General Public License as           *
+ *   published by the Free Software Foundation, either version 2.1 of the  *
+ *   License, or (at your option) any later version.                       *
+ *                                                                         *
+ *   FreeCAD is distributed in the hope that it will be useful, but        *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with FreeCAD. If not, see                               *
+ *   <https://www.gnu.org/licenses/>.                                      *
+ *                                                                         *
+ **************************************************************************/
+
+#include <QCoreApplication>
+#include <QFile>
+#include <QDomDocument>
+#include <iostream>
+
+int main(int argc, char* argv[])
+{
+    QCoreApplication app(argc, argv);
+    QStringList args = QCoreApplication::arguments();
+    if (args.size() != 2) {
+        std::cerr << "Requires input file\n";
+        return -1;
+    }
+
+    QFile file(args[1]);
+    if (!file.open(QFile::ReadOnly)) {
+        std::cerr << "Failed to read file\n";
+        return -1;
+    }
+
+    QDomDocument xml;
+    if (!xml.setContent(&file)) {
+        std::cerr << "Invalid XML content\n";
+        return -1;
+    }
+    file.close();
+
+    if (!file.open(QFile::WriteOnly)) {
+        std::cerr << "Failed to write file\n";
+        return -1;
+    }
+
+    file.write(xml.toByteArray(4));
+    file.close();
+
+    return 0;
+}