From 0ab3332ad3a8102e5aeb29aee58c4ccd58854ff2 Mon Sep 17 00:00:00 2001
From: Bananymous <bananymousosq@gmail.com>
Date: Tue, 16 May 2023 19:22:46 +0300
Subject: [PATCH] Userspace: Start work on shell

---
 kernel/kernel/kernel.cpp       |  2 +-
 userspace/CMakeLists.txt       |  1 +
 userspace/Shell/CMakeLists.txt | 18 ++++++++++++++++++
 userspace/Shell/main.cpp       | 27 +++++++++++++++++++++++++++
 userspace/cat/main.cpp         |  4 ----
 5 files changed, 47 insertions(+), 5 deletions(-)
 create mode 100644 userspace/Shell/CMakeLists.txt
 create mode 100644 userspace/Shell/main.cpp

diff --git a/kernel/kernel/kernel.cpp b/kernel/kernel/kernel.cpp
index 71b8eab69c..b1df11d8af 100644
--- a/kernel/kernel/kernel.cpp
+++ b/kernel/kernel/kernel.cpp
@@ -180,7 +180,7 @@ static void init2(void* tty1)
 
 	((TTY*)tty1)->initialize_device();
 
-	MUST(Process::create_userspace("/usr/bin/cat"sv));
+	MUST(Process::create_userspace("/usr/bin/Shell"sv));
 	return;
 
 	Process::create_kernel(
diff --git a/userspace/CMakeLists.txt b/userspace/CMakeLists.txt
index add6c6be0b..0138f20e0b 100644
--- a/userspace/CMakeLists.txt
+++ b/userspace/CMakeLists.txt
@@ -3,6 +3,7 @@ cmake_minimum_required(VERSION 3.26)
 project(userspace CXX)
 
 set(USERSPACE_PROJECTS
+	Shell
 	cat
 	test
 	yes
diff --git a/userspace/Shell/CMakeLists.txt b/userspace/Shell/CMakeLists.txt
new file mode 100644
index 0000000000..0d742bf91a
--- /dev/null
+++ b/userspace/Shell/CMakeLists.txt
@@ -0,0 +1,18 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(Shell CXX)
+
+set(SOURCES
+	main.cpp
+)
+
+add_executable(Shell ${SOURCES})
+target_compile_options(Shell PUBLIC -O2 -g)
+add_dependencies(Shell libc-install)
+target_link_options(Shell PUBLIC -nodefaultlibs)
+target_link_libraries(Shell PUBLIC ${BANAN_LIB}/libc.a)
+
+add_custom_target(Shell-install
+	COMMAND cp ${CMAKE_CURRENT_BINARY_DIR}/Shell ${BANAN_BIN}/
+	DEPENDS Shell
+)
diff --git a/userspace/Shell/main.cpp b/userspace/Shell/main.cpp
new file mode 100644
index 0000000000..a0eaf2ee1c
--- /dev/null
+++ b/userspace/Shell/main.cpp
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <termios.h>
+
+struct termios old_termios, new_termios;
+
+int main(int argc, char** argv)
+{
+	for (int i = 0; i < argc; i++)
+		printf("%s\n", argv[i]);
+
+	tcgetattr(0, &old_termios);
+
+	new_termios = old_termios;
+	new_termios.c_lflag &= ~(ECHO | ICANON);
+	tcsetattr(0, TCSANOW, &new_termios);
+
+	while (true)
+	{
+		char c;
+		fread(&c, 1, sizeof(char), stdin);
+		fputc(c, stdout);
+		fflush(stdout);
+	}
+
+	tcsetattr(0, TCSANOW, &old_termios);
+	return 0;
+}
diff --git a/userspace/cat/main.cpp b/userspace/cat/main.cpp
index ce1d3da91d..31473283c9 100644
--- a/userspace/cat/main.cpp
+++ b/userspace/cat/main.cpp
@@ -21,10 +21,6 @@ int main(int argc, char** argv)
 {
 	int ret = 0;
 
-	printf("argc %d, argv %p\n", argc, argv);
-	for (int i = 0; i < argc; i++)
-		printf("%s\n", argv[i]);
-
 	if (argc > 1)
 	{
 		for (int i = 1; i < argc; i++)