From 55a4231cae8cb9beb6d858b44d0d5eca1e255507 Mon Sep 17 00:00:00 2001
From: Kirollos <kirollos.nashaat@hotmail.com>
Date: Thu, 11 Apr 2024 02:40:45 +0200
Subject: [PATCH] ESE file parser to extract [POSITIONS]

---
 DiscordEuroscope/ESEHandler.cpp | 68 +++++++++++++++++++++++++++++++++
 DiscordEuroscope/ESEHandler.h   | 40 +++++++++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100644 DiscordEuroscope/ESEHandler.cpp
 create mode 100644 DiscordEuroscope/ESEHandler.h

diff --git a/DiscordEuroscope/ESEHandler.cpp b/DiscordEuroscope/ESEHandler.cpp
new file mode 100644
index 0000000..751ae1d
--- /dev/null
+++ b/DiscordEuroscope/ESEHandler.cpp
@@ -0,0 +1,68 @@
+#include "stdafx.h"
+#include "ESEHandler.h"
+#include <filesystem>
+#include <fstream>
+
+std::vector<std::string> ESEHandler::path_to_ese;
+std::vector<ESEPositionItem> ESEHandler::positions;
+
+bool ESEHandler::LocateESEFile(std::string relative_path_to_ese)
+{
+	path_to_ese.clear();
+	for (auto& file : std::filesystem::directory_iterator(relative_path_to_ese))
+	{
+		if (file.is_regular_file() && stricmp(file.path().filename().extension().string().c_str(), ".ese") == 0)
+		{
+			path_to_ese.push_back(file.path().string());
+		}
+	}
+	return path_to_ese.size() > 0;
+}
+
+int ESEHandler::ParsePositions(void)
+{
+	if (path_to_ese.size() > 0)
+	{
+		for (auto& file : path_to_ese)
+		{
+			bool start_pos = false;
+			std::ifstream fs(file);
+			std::string line;
+			while (std::getline(fs, line))
+			{
+				if (line == "[POSITIONS]")
+				{
+					start_pos = true;
+					continue;
+				}
+				if (!start_pos) continue;
+
+				if (!(line[0] >= 'A' && line[0] <= 'Z'))
+				{
+					if (line[0] == '[') break;
+					continue;
+				}
+
+				ESEPositionItem pos;
+				int idx1 = line.find_first_of(':');
+				pos.callsign = line.substr(0, idx1);
+				int idx2 = line.find_first_of(':', idx1 + 1);
+				pos.radio_callsign = line.substr(idx1 + 1, idx2 - idx1 - 1);
+				idx1 = line.find_first_of(':', idx2 + 1);
+				pos.frequency = line.substr(idx2 + 1, idx1 - idx2 - 1);
+				positions.push_back(pos);
+			}
+			fs.close();
+		}
+	}
+	return positions.size();
+}
+
+void ESEHandler::GetRadioCallsigns(std::map<std::string, std::string>& rcs)
+{
+	rcs.clear();
+	for (auto& pos : positions)
+	{
+		rcs.insert(std::pair<std::string, std::string>(pos.callsign, pos.radio_callsign));
+	}
+}
diff --git a/DiscordEuroscope/ESEHandler.h b/DiscordEuroscope/ESEHandler.h
new file mode 100644
index 0000000..7dfbdbd
--- /dev/null
+++ b/DiscordEuroscope/ESEHandler.h
@@ -0,0 +1,40 @@
+/*
+	Copyright(C) 2023-2024 Kirollos Nashaat
+
+	This program is free software : you can redistribute it and /or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.If not, see < https://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+#include <string>
+#include <vector>
+#include <map>
+
+
+struct ESEPositionItem
+{
+	std::string callsign;
+	std::string radio_callsign;
+	std::string frequency;
+};
+
+class ESEHandler
+{
+private:
+	static std::vector<std::string> path_to_ese;
+	static std::vector<ESEPositionItem> positions;
+public:
+	static bool LocateESEFile(std::string relative_path_to_ese);
+	static int ParsePositions(void);
+	static void GetRadioCallsigns(std::map<std::string, std::string>& rcs);
+};