Outsourced file related operations

src/FileService.cpp

@@ -0,0 +1,22 @@
+#include <sstream>
+#include <fstream>
+#include "../include/FileService.h"
+#include "../include/Macros.h"
+#include "../include/ShellService.h"
+
+bool FileServices::doesNonEmptyFileExist(std::string path) {
+    std::ifstream file(path);
+    return file.good() && file.peek() != std::ifstream::traits_type::eof();
+};
+
+void FileServices::emptyFile(std::string path) {
+    std::stringstream cmd;
+    cmd << CAT_PATH << " " << NULL_PATH << " > " << path;
+    ShellService::exec(cmd.str().c_str());
+};
+
+void FileServices::createOrOverwriteFile(std::string path, std::string content) {
+    std::stringstream cmd;
+    cmd << ECHO_PATH << " " << content << " > " << path;
+    ShellService::exec(cmd.str().c_str());
+};