First commit.

.gitmodules

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+[submodule "IvyQt"]
+	path = IvyQt
+	url = https://gitlab.com/ivybus/IvyQt.git

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+
+project(IvyQtExample LANGUAGES CXX)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets Xml REQUIRED)
+find_package(Qt${QT_VERSION_MAJOR} COMPONENTS
+    Widgets
+    Network
+    Xml
+    REQUIRED)
+
+set(IvyQt_DIR "IvyQt/IvyQt/")
+add_subdirectory(${IvyQt_DIR} ivyqt)
+
+set(PROJECT_SOURCES
+        main.cpp
+        pprzlinkqt.cpp
+        message_definition.cpp
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+    qt_add_executable(IvyQtExample ${PROJECT_SOURCES})
+else()
+    add_executable(IvyQtExample ${PROJECT_SOURCES})
+endif()
+
+
+target_include_directories(IvyQtExample PRIVATE ${IvyQt_DIR})
+
+target_link_libraries(IvyQtExample PRIVATE
+    Qt${QT_VERSION_MAJOR}::Widgets
+    Qt${QT_VERSION_MAJOR}::Network
+    Qt${QT_VERSION_MAJOR}::Xml
+    IvyQt
+)

main.cpp

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+#include <QApplication>
+#include "pprzlinkqt.h"
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication a(argc, argv);
+
+    PprzlinkQt pp("/home/fabien/paparazzi/var/messages.xml");
+
+    return a.exec();
+}
+

message_definition.cpp

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+#include "message_definition.h"
+
+
+MessageDefinition::MessageDefinition(QDomElement msg_elt, QString class_name, uint8_t class_id):
+    class_name(class_name), class_id(class_id)
+{
+    name = msg_elt.attribute("name");
+    id = msg_elt.attribute("id").toUInt();
+
+    for(auto elt = msg_elt.firstChildElement();
+        !elt.isNull();
+        elt = elt.nextSiblingElement()) {
+
+        if(elt.tagName() == "description") {
+            description = elt.text();
+        } else if(elt.tagName() == "field") {
+            QString field_description = elt.text();
+            QString field_name = elt.attribute("name");
+            QString field_type = elt.attribute("type");
+            QString format = elt.attribute("format");
+            QString unit = elt.attribute("unit");
+            QString values = elt.attribute("values");
+            QString alt_unit = elt.attribute("alt_unit");
+            QString alt_unit_coef = elt.attribute("alt_unit_coef");
+            qDebug() << field_name << field_type << format << unit << values << alt_unit << alt_unit_coef;
+
+        }
+    }
+}

message_definition.h

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+#ifndef MESSAGEDEFINITION_H
+#define MESSAGEDEFINITION_H
+
+#include <QString>
+#include <QtXml>
+
+class MessageDefinition
+{
+public:
+    MessageDefinition(QDomElement msg_elt, QString class_name, uint8_t class_id);
+
+    QString getName() {return name;}
+    uint8_t getId() {return id;}
+    QString getClassName() {return class_name;}
+    uint8_t getClassId() {return class_id;}
+    QString getDescription() {return description;}
+
+private:
+    QString class_name;
+    uint8_t class_id;
+    QString name;
+    uint8_t id;
+    QString description;
+
+    //fields
+
+};
+
+#endif // MESSAGEDEFINITION_H

pprzlinkqt.cpp

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+#include "pprzlinkqt.h"
+#include <QtXml>
+#include "message_definition.h"
+
+
+PprzlinkQt::PprzlinkQt(QString filename, QObject *parent) : QObject(parent)
+{
+    QDomDocument xmlMessages;
+    QFile f(filename);
+    if(!f.open(QIODevice::ReadOnly)) {
+        throw std::runtime_error("Error while loading layout file");
+    }
+    xmlMessages.setContent(&f);
+    f.close();
+
+    QDomElement root = xmlMessages.documentElement();
+
+    QString rootTag = root.tagName();
+
+    if (rootTag != "protocol") {
+        throw std::runtime_error("Root tag expected to be \"protocol\". Is this a messages file ?");
+    }
+
+    for(auto class_elt = root.firstChildElement();
+        !class_elt.isNull();
+        class_elt = class_elt.nextSiblingElement()) {
+
+        QString class_name = class_elt.attribute("name");
+        uint8_t class_id = class_elt.attribute("id").toUInt();
+        qDebug() << class_name << class_id;
+
+        for(auto msg_elt = class_elt.firstChildElement();
+            !msg_elt.isNull();
+            msg_elt = msg_elt.nextSiblingElement()) {
+
+            MessageDefinition def(msg_elt, class_name, class_id);
+            qDebug() << def.getName() << def.getId() << def.getDescription();
+
+        }
+
+    }
+
+}

pprzlinkqt.h

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+#ifndef PPRZLINKQT_H
+#define PPRZLINKQT_H
+
+#include <QObject>
+
+class PprzlinkQt : public QObject
+{
+    Q_OBJECT
+public:
+    explicit PprzlinkQt(QString filename, QObject *parent = nullptr);
+
+signals:
+
+};
+
+#endif // PPRZLINKQT_H