JsonUtils & improvements (#476)

* add JsonUtils

* update

* repair

* update

* ident

* Schema correct msg other adjusts

* fix effDel, ExceptionLog, cleanup

* fix travis qt5.2

* not so funny

* use Qthread interrupt instead abort bool

* update services

include/utils/FileUtils.h

@@ -1,10 +1,64 @@
 #pragma once
 
+// qt includes
+#include <QFile>
 #include <QString>
+#include <QByteArray>
+
+// util includes
+#include "Logger.h"
 
 namespace FileUtils {
 
 QString getBaseName( QString sourceFile);
 QString getDirName( QString sourceFile);
 
+	///
+	/// @brief check if the file exists
+	/// @param[in]   path     The file path to check
+	/// @param[in]   log      The logger of the caller to print errors
+	/// @param[in]   ignError Ignore errors during file read (no log output)
+	/// @return               true on success else false
+	///
+	bool fileExists(const QString& path, Logger* log, bool ignError=false);
+
+	///
+	/// @brief read a file given by path.
+	/// @param[in]   path     The file path to read
+	/// @param[out]  data     The read data o success
+	/// @param[in]   log      The logger of the caller to print errors
+	/// @param[in]   ignError Ignore errors during file read (no log output)
+	/// @return               true on success else false
+	///
+	bool readFile(const QString& path, QString& data, Logger* log, bool ignError=false);
+
+	///
+	/// write a file given by path.
+	/// @param[in]   path     The file path to read
+	/// @param[in]   data     The data to write
+	/// @param[in]   log      The logger of the caller to print errors
+	/// @return               true on success else false
+	///
+	bool writeFile(const QString& path, const QByteArray& data, Logger* log);
+
+	///
+	/// @brief delete a file by given path
+	/// @param[in]   path     The file path to delete
+	/// @param[in]   log      The logger of the caller to print errors
+	/// @return               true on success else false
+	///
+	bool removeFile(const QString& path, Logger* log);
+
+	///
+	/// @brief Convert a path that may contain special placeholders
+	/// @param[in]   path     The path to convert
+	///
+	QString convertPath(const QString path);
+
+	///
+	/// @brief resolve the file error and print a message
+	/// @param[in]  file     The file which caused the error
+	/// @param[in]  log      The logger of the caller
+	///
+	void resolveFileError(const QFile& file, Logger* log);
 };