From fabaae522d0593f3b6c363e25eba2643a0b5d64d Mon Sep 17 00:00:00 2001
From: Green Sky <green@g-s.xyz>
Date: Fri, 16 Dec 2022 18:05:40 +0100
Subject: [PATCH] add vim ipc slave, no functionallity yet

---
 CMakeLists.txt              |  3 ++
 vim_research/CMakeLists.txt | 16 ++++++++
 vim_research/test1.cpp      | 77 +++++++++++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 vim_research/CMakeLists.txt
 create mode 100644 vim_research/test1.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 98277cc..613cdea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 #option(BUILD_TESTING "Enable testing with ctest." OFF)
 
 add_subdirectory(./external/json)
+add_subdirectory(./external/zed_net)
 
 # Bump up warning levels appropriately for clang, gcc & msvc
 if (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU" OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
@@ -37,3 +38,5 @@ add_subdirectory(./prototyping EXCLUDE_FROM_ALL)
 
 add_subdirectory(./version0)
 
+add_subdirectory(./vim_research)
+
diff --git a/vim_research/CMakeLists.txt b/vim_research/CMakeLists.txt
new file mode 100644
index 0000000..86b1b8d
--- /dev/null
+++ b/vim_research/CMakeLists.txt
@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+
+project(vim_research CXX C)
+
+########################################
+
+add_executable(vim_research_test1
+	./test1.cpp
+)
+
+target_link_libraries(vim_research_test1 PUBLIC
+	crdt_version0
+	zed_net
+	nlohmann_json::nlohmann_json
+)
+
diff --git a/vim_research/test1.cpp b/vim_research/test1.cpp
new file mode 100644
index 0000000..4e494cc
--- /dev/null
+++ b/vim_research/test1.cpp
@@ -0,0 +1,77 @@
+#include <crdt/text_document.hpp>
+
+#include <memory>
+#include <zed_net.h>
+
+#include <iostream>
+#include <cassert>
+
+// single letter agent, for testing only
+using Agent = char;
+using DocType = GreenCRDT::TextDocument<Agent>;
+using ListType = DocType::ListType;
+
+int main(void) {
+	std::cout << "starting vim ipc server\n";
+
+	if (zed_net_init() != 0) {
+		std::cerr << "zed_net_init failed: " << zed_net_get_error() << "\n";
+		return -1;
+	}
+
+	std::cout << "initialized zed_net\n";
+
+	const unsigned int port {1337};
+	zed_net_socket_t listen_socket;
+	if (zed_net_tcp_socket_open(
+		&listen_socket,
+		port, // port
+		0, // non blocking
+		1 // listen
+	) != 0) {
+		std::cerr << "zed_net_tcp_socket_open failed: " << zed_net_get_error() << "\n";
+		zed_net_shutdown();
+		return -1;
+	}
+
+	std::cout << "listening on " << port << "\n";
+
+	zed_net_socket_t remote_socket;
+	zed_net_address_t remote_address;
+	if (zed_net_tcp_accept(&listen_socket, &remote_socket, &remote_address) != 0) {
+		std::cerr << "zed_net_tcp_accept failed: " << zed_net_get_error() << "\n";
+		zed_net_socket_close(&listen_socket);
+		zed_net_shutdown();
+		return -1;
+	}
+
+	std::cout << "got connection from " << zed_net_host_to_str(remote_address.host) << ":" << remote_address.port << "\n";
+
+	while (true) {
+		// 10MiB
+		auto buffer = std::make_unique<std::array<uint8_t, 1024*1024*10>>();
+
+		int64_t bytes_received {0};
+		bytes_received = zed_net_tcp_socket_receive(&remote_socket, buffer->data(), buffer->size());
+		if (bytes_received < 0) {
+			std::cerr << "zed_net_tcp_socket_receive failed: " << zed_net_get_error() << "\n";
+			zed_net_socket_close(&remote_socket);
+			zed_net_socket_close(&listen_socket);
+			zed_net_shutdown();
+			return -1;
+		} else if (bytes_received == 0) {
+			std::cout << "got 0 bytes?\n";
+			break; // connection closed
+		}
+
+		std::cout << "got " << bytes_received << " bytes\n";
+		// do data decoding
+	}
+
+	std::cout << "shutting down\n";
+
+	zed_net_socket_close(&listen_socket);
+	zed_net_shutdown();
+	return 0;
+}
+