refs #621, allow to load setup from resource dir file

* CValueObjects can be loaded from JSON file
* get bootstrap file location

src/blackmisc/json.h

@@ -15,6 +15,7 @@
 #include "blackmisc/blackmiscexport.h"
 #include "blackmisc/tuple.h"
 #include "blackmisc/inheritancetraits.h"
+#include "blackmisc/fileutils.h"
 #include <QJsonObject>
 #include <QJsonDocument>
 #include <QJsonValue>
@@ -164,6 +165,28 @@ namespace BlackMisc
         //! Merges an incremental json object into an existing one
         BLACKMISC_EXPORT QJsonObject applyIncrementalObject(const QJsonObject &previousObject, const QJsonObject &incrementalObject);
 
+        /*!
+         * Load JSON file and init by that
+         */
+        template <class T>
+        bool loadFromJsonFile(T &object, const QString &fileNameAndPath)
+        {
+            const QString jsonString(CFileUtils::readFileToString(fileNameAndPath));
+            if (jsonString.isEmpty()) { return false; }
+            object.convertFromJson(jsonString);
+            return true;
+        }
+
+        /*!
+         * Save to JSON file
+         */
+        template <class T>
+        bool saveToJsonFile(const T &object, const QString &fileNameAndPath)
+        {
+            const QString jsonString(object.toJsonString());
+            if (jsonString.isEmpty()) { return false; }
+            return CFileUtils::writeStringToFile(jsonString, fileNameAndPath);
+        }
     } // Json
 
     namespace Mixin
@@ -266,8 +289,8 @@ namespace BlackMisc
          * the derived class uses this macro to disambiguate the inherited members.
          */
 #       define BLACKMISC_DECLARE_USING_MIXIN_JSON(DERIVED)                          \
-            using ::BlackMisc::Mixin::JsonByTuple<DERIVED>::toJson;                 \
-            using ::BlackMisc::Mixin::JsonByTuple<DERIVED>::convertFromJson;
+        using ::BlackMisc::Mixin::JsonByTuple<DERIVED>::toJson;                 \
+        using ::BlackMisc::Mixin::JsonByTuple<DERIVED>::convertFromJson;
 
     } // Mixin
 } // BlackMisc

src/blackmisc/project.cpp

@@ -305,6 +305,21 @@ namespace BlackMisc
         return s;
     }
 
+    const QString getBootstrapResourceFileImpl()
+    {
+        const QString d(CProject::getSwiftResourceDir());
+        if (d.isEmpty()) { return ""; }
+        const QFile file(CFileUtils::appendFilePaths(d, "shared/boostrap/boostrap.json"));
+        Q_ASSERT_X(file.exists(), Q_FUNC_INFO, "missing dir");
+        return QFileInfo(file).absoluteFilePath();
+    }
+
+    const QString &CProject::getBootstrapResourceFile()
+    {
+        static const QString s(getBootstrapResourceFileImpl());
+        return s;
+    }
+
     QString getSwiftStaticDbFilesDirImpl()
     {
         const QString d(CProject::getSwiftResourceDir());

src/blackmisc/project.h

@@ -96,6 +96,9 @@ namespace BlackMisc
         //! Where resource files (static DB files, ...) etc are located
         static const QString &getSwiftResourceDir();
 
+        //! Bootstrap resource directory
+        static const QString &getBootstrapResourceFile();
+
         //! Where static DB files are located
         static const QString &getSwiftStaticDbFilesDir();