add a parser to read the UID per user

include/aman/config/IdentifierFileFormat.h

@@ -0,0 +1,51 @@
+/*
+ * @brief Defines the communication file format
+ * @file aman/config/CommunicationFileFormat.h
+ * @author Sven Czarnian <devel@svcz.de>
+ * @copyright Copyright 2021 Sven Czarnian
+ * @license This project is published under the GNU General Public License v3 (GPLv3)
+ */
+
+#pragma once
+
+#include <aman/config/FileFormat.h>
+#include <aman/types/Communication.h>
+
+namespace aman {
+    /**
+     * @brief Defines the parser of communication configurations
+     * @ingroup format
+     *
+     * All configuration entries need to be stored in 'AmanCommunication.txt'.
+     *
+     * The following entries of the configuration exist:
+     * <table>
+     *   <caption id="multi_row">Setting entries</caption>
+     *   <tr>
+     *     <th>Name</th><th>Description</th><th>Default value</th><th>Unit</th>
+     *   </tr>
+     *   <tr>
+     *     <td>UID</td>
+     *     <td>Defines the identifier to access the backend.</td>
+     *     <td></td><td></td>
+     *   </tr>
+     * </table>
+     */
+    class IdentifierFileFormat : public FileFormat {
+#ifndef DOXYGEN_IGNORE
+    public:
+        /**
+         * @brief Initializes the identifier file format
+         */
+        IdentifierFileFormat();
+
+        /**
+         * @brief Parses the set configuration file
+         * @param[in] filename The path to the configuration file
+         * @param[out] config The resulting configuration
+         * @return True if the configuration file was valid, else false
+         */
+        bool parse(const std::string& filename, Communication& config);
+#endif
+    };
+}