save for christmas

UpdatePTUDevCtrl/utils.cpp

@@ -13,9 +13,65 @@
 #include <QDir>
 #include <QDirIterator>
 #include <QRegularExpression>
+#include <QProcess>
+#include <QJsonDocument>
+#include <QJsonValue>
+#include <QJsonObject>
+#include <QJsonArray>
 
 #include <fstream>
 
+QVector<QPair<QString, QString>> Utils::installedPackages() {
+    QVector<QPair<QString, QString>> vec;
+    if (QFile::exists("/usr/bin/ptuPackageVersions")) {
+        QProcess p;
+        QStringList params;
+        params << "-c" << R"(/usr/bin/ptuPackageVersions -i -o json)";
+
+        p.start("bash", params);
+        p.waitForFinished();
+
+        QString r = p.readAllStandardOutput();
+
+        // ptuPackageVersions returns a json-array
+        QJsonArray const &ja = QJsonDocument::fromJson(r.remove(QRegExp("\\n")).toUtf8()).array();
+        if (!ja.empty()) {
+            qCritical() << __LINE__;
+            // transform the array into an object, containing the objects
+            // of the array (christian needs it this way)
+            foreach (QJsonValue const &value, ja) {
+                if (value.isObject()) {
+                    QJsonObject obj = value.toObject();
+                    QStringList keys = obj.keys();
+                    if (!keys.isEmpty()) {
+                        QString const &k = keys.first();
+                        QJsonValue const &v = obj.value(k);
+                        if (v.isObject()) {
+                            obj = v.toObject();
+                            if (obj.keys().contains("Version")) {
+                                QJsonValue const &w = obj.value("Version");
+                                if (w.isString()) {
+                                    QString s = w.toString();
+                                    QPair<QString, QString> p(k, s);
+                                    vec.push_back(p);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        } else {
+            qCritical() << __func__ << ":" << __LINE__
+                        << "ERROR array return by ptuPackageVersions empty";
+        }
+    } else {
+        qCritical() << __func__ << ":" << __LINE__
+                    << "ERROR executing ptuPackageVersions";
+    }
+
+    return vec;
+}
+
 int Utils::read1stLineOfFile(QString fileName) {
     QFile f(fileName);
     if (f.exists()) {