1 files changed, 116 insertions, 0 deletions
diff --git a/tio.jai b/tio.jai
new file mode 100644
index 0000000..37c7e4a
--- /dev/null
+++ b/tio.jai
@@ -0,0 +1,116 @@
+
+terminal_state : struct {
+    // size : ivec2;
+    width: s32;
+    height: s32;
+	// cursor := ivec2.{-1, -1}; // {-1, -1} if cursor hidden
+    x: s32 = -1;
+    y: s32 = -1;
+	last_mode : Graphics_Mode;
+}
+
+#if OS == .LINUX {
+    #import "POSIX";
+
+	__term : My_Termios;
+
+	My_Termios :: struct {
+		c_iflag : u32;
+		c_oflag : u32;
+		c_cflag : u32;
+		c_lflag : u32;
+		unknown_pad : u8;
+		c_cc : [32]u8;
+		c_ispeed : u32;
+		c_ospeed : u32;
+	}
+
+	libc :: #system_library "libc";
+	tcsetattr :: (fd : s32, optional_actions : s32, termios_p : *My_Termios) -> s32 #foreign libc;
+	tcgetattr :: (fd : s32, termios_p : *My_Termios) -> s32 #foreign libc;	
+}
+else {
+    assert(false, "unsupported OS\n");
+}
+
+Graphics_Mode :: struct {
+	foreground : Color;
+	background : Color;
+	attr_flags : enum_flags u8 {
+		F_BOLD 			:: 0x1; 
+		F_DIM 			:: 0x2; 
+		F_ITALIC 		:: 0x4; 
+		F_UNDERLINE 	:: 0x8; 
+		F_BLINKING 		:: 0x10; 
+		F_INVERSE 		:: 0x20; 
+		F_STRIKETHROUGH :: 0x40; 
+	}
+	// attrs : [MAX_ATTRS]bool;
+	// 0 - bold (on/off/keep)
+	// 1 - dim/faint
+	// 2 - italic
+	// 3 - underline
+	// 4 - blinking
+	// 5 - inverse
+	// 6 - strikethrough
+	fcol256 : u8;
+	bcol256 : u8;
+}
+
+Color :: enum u8 {
+	RESET 			:: 0;
+	DEFAULT 		:: 39;
+	COLOR256		:: 38;
+
+	BLACK 			:: 30;
+	RED 			:: 31;
+	GREEN 			:: 32;
+	YELLOW 			:: 33;
+	BLUE 			:: 34;
+	MAGENTA 		:: 35;
+	CYAN 			:: 36;
+	WHITE 			:: 37;
+
+	BRIGHT_BLACK 	:: 90;
+	BRIGHT_RED 		:: 91;
+	BRIGHT_GREEN 	:: 92;
+	BRIGHT_YELLOW 	:: 93;
+	BRIGHT_BLUE 	:: 94;
+	BRIGHT_MAGENTA 	:: 95;
+	BRIGHT_CYAN 	:: 96;
+	BRIGHT_WHITE 	:: 97;
+}
+
+__old_logger : type_of(context.logger);
+
+initialize :: () {
+    #if OS == .LINUX {
+        tcgetattr(STDIN_FILENO, *__term);
+    } else {
+		assert(false, "procedure call on unsupported OS\n");
+    }
+}
+
+terminate :: () {
+	#if OS == .LINUX {
+		tcsetattr(STDIN_FILENO, 0, *__term); // return echo
+
+		tio_write("\e[?47l");	// restore screen
+		tio_write("\e8");		// restore cursor
+		tio_write("\e[?25h");	// show cursor
+		tio_write("\e[?30h");	// show scrollbar
+		terminal_state = .{};
+
+		context.logger = __old_logger;		
+	} else {
+		assert(false, "procedure call on unsupported OS\n");
+	}
+}
+
+tio_write :: (str : string) {
+	#if OS == .LINUX {
+        write(STDIN_FILENO, str.data, xx str.count);
+    } else {
+		assert(false, "procedure call on unsupported OS\n");
+	}
+}