add utils

Signed-off-by: Pascal Bauer <pascal.bauer@rwth-aachen.de>

common/include/villas/kernel/devices/utils.hpp

@@ -0,0 +1,26 @@
+/* Utils
+ *
+ * Author: Pascal Bauer <pascal.bauer@rwth-aachen.de>
+ *
+ * SPDX-FileCopyrightText: 2023-2024 Pascal Bauer <pascal.bauer@rwth-aachen.de>
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <vector>
+
+namespace villas {
+namespace kernel {
+namespace devices {
+namespace utils {
+
+void write_to_file(std::string data, const std::filesystem::path file);
+std::vector<std::string> read_names_in_directory(const std::string &name);
+
+} // namespace utils
+} // namespace devices
+} // namespace kernel
+} // namespace villas

common/lib/kernel/devices/utils.cpp

@@ -0,0 +1,48 @@
+/* Utils
+ *
+ * Author: Pascal Bauer <pascal.bauer@rwth-aachen.de>
+ *
+ * SPDX-FileCopyrightText: 2023-2024 Pascal Bauer <pascal.bauer@rwth-aachen.de>
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dirent.h>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <villas/kernel/devices/utils.hpp>
+#include <villas/log.hpp>
+
+namespace utils = villas::kernel::devices::utils;
+
+void utils::write_to_file(std::string data, const std::filesystem::path file) {
+  villas::Log::get("Filewriter")->debug("{} > {}", data, file.u8string());
+  std::ofstream outputFile(file.u8string());
+
+  if (outputFile.is_open()) {
+    // Write to file
+    outputFile << data;
+    outputFile.close();
+  } else {
+    throw std::filesystem::filesystem_error("Cannot open outputfile",
+                                            std::error_code());
+  }
+}
+
+std::vector<std::string>
+utils::read_names_in_directory(const std::string &name) {
+  DIR *directory = opendir(name.c_str());
+
+  struct dirent *dp;
+  std::vector<std::string> names;
+  dp = readdir(directory);
+  while (dp != NULL) {
+    auto name = std::string(dp->d_name);
+    if (name != "." && name != "..") {
+      names.push_back(name);
+    }
+    dp = readdir(directory);
+  }
+  closedir(directory);
+  return names;
+}