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#module_parameters(ENABLE_SIGINT := true, ENABLE_SIGQUIT := true);
#import "Basic";
// TODO Eventually, I'll need to add #scope_module ...
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; // Input mode flags.
c_oflag : u32; // Output mode flags.
c_cflag : u32; // Control mode flags.
c_lflag : u32; // Local mode flags.
c_line : u8; // Line discipline.
c_cc : [32]u8; // Control characters.
c_ispeed : u32; // Input speed.
c_ospeed : u32; // Output speed.
}
libc :: #system_library "libc";
// https://codebrowser.dev/glibc/glibc/sysdeps/unix/sysv/linux/tcsetattr.c.html
tcsetattr :: (fd : s32, optional_actions : s32, termios_p : *My_Termios) -> s32 #foreign libc;
// https://codebrowser.dev/glibc/glibc/sysdeps/unix/sysv/linux/tcgetattr.c.html
tcgetattr :: (fd : s32, termios_p : *My_Termios) -> s32 #foreign libc;
}
else #if OS == .WINDOWS {
#run print("TODO tio\n", to_standard_error = true);
}
else {
#run 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;
}
Key :: enum u64 {
READ_ERROR :: 0xffffffff_ffffffff;
UP :: 0x41_5b1b;
DOWN :: 0x42_5b1b;
RIGHT :: 0x43_5b1b;
LEFT :: 0x44_5b1b;
CTRL_UP :: 0x4135_3b315b1b;
CTRL_DOWN :: 0x4235_3b315b1b;
CTRL_RIGHT :: 0x4335_3b315b1b;
CTRL_LEFT :: 0x4435_3b315b1b;
SHIFT_UP :: 0x4132_3b315b1b;
SHIFT_DOWN :: 0x4232_3b315b1b;
SHIFT_RIGHT :: 0x4332_3b315b1b;
SHIFT_LEFT :: 0x4432_3b315b1b;
CTRL_SHIFT_UP :: 0x4136_3b315b1b;
CTRL_SHIFT_DOWN :: 0x4236_3b315b1b;
CTRL_SHIFT_RIGHT:: 0x4336_3b315b1b;
CTRL_SHIFT_LEFT :: 0x4436_3b315b1b;
ALT_UP :: 0x4133_3b315b1b;
ALT_DOWN :: 0x4233_3b315b1b;
ALT_RIGHT :: 0x4333_3b315b1b;
ALT_LEFT :: 0x4433_3b315b1b;
CTRL_C :: 0x03;
CTRL_V :: 0x16;
CTRL_X :: 0x18;
CTRL_Y :: 0x19;
CTRL_Z :: 0x1A;
CTRL_BACKSLASH :: 0x1C;
// ALT_SHIFT_UP :: 0x4133_3b315b1b;
// ALT_SHIFT_DOWN :: 0x4233_3b315b1b;
// ALT_SHIFT_RIGHT :: 0x4333_3b315b1b;
// ALT_SHIFT_LEFT :: 0x4433_3b315b1b;
ENTER :: 0x0D;
ESCAPE :: 0x1B;
BACKSPACE :: 0x7F;
DELETE :: 0x7E335B1B;
}
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;
}
update_terminal_size :: () {
#if OS == .LINUX {
TIOCGWINSZ :: 0x5413;
winsize : struct {
ws_row, ws_col, ws_xpixel, ws_ypixel : u16;
}
ioctl(0, TIOCGWINSZ, *winsize);
terminal_state.width = xx winsize.ws_col;
terminal_state.height = xx winsize.ws_row;
}
else #if OS == .WINDOWS {
print("TODO tio\n", to_standard_error = true);
}
else {
assert(false, "unsupported OS\n");
}
}
initialize :: () {
#if OS == .LINUX {
tui_write("\e[?25l"); // hide cursor
tui_write("\e7"); // save cursor position
tui_write("\e[?1047h"); // switch screen
tui_write("\e[?30l"); // hide scrollbar
tui_write("\e[H"); // move to top left corner
tui_write("\e[0m"); // set default mode
tui_write("\e[2J"); // clear screen
{
tcgetattr(STDIN_FILENO, *__term);
term_new := __term;
term_new.c_iflag &= 0xFFFFFA14;// ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
term_new.c_oflag &= 0xFFFFFFFE;// ~OPOST;
term_new.c_lflag &= 0xFFFF7FB4;// ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
term_new.c_cflag &= 0xFFFFFECF;// ~(CSIZE | PARENB);
term_new.c_cflag |= 0x00000030;
tcsetattr(STDIN_FILENO, 0, *term_new);
}
update_terminal_size();
}
else #if OS == .WINDOWS {
print("TODO tio\n", to_standard_error = true);
}
else {
assert(false, "unsupported OS\n");
}
}
terminate :: () {
#if OS == .LINUX {
tcsetattr(STDIN_FILENO, 0, *__term); // return echo
tui_write("\e[?47l"); // restore screen
tui_write("\e8"); // restore cursor
tui_write("\e[?25h"); // show cursor
tui_write("\e[?30h"); // show scrollbar
terminal_state = .{};
}
else #if OS == .WINDOWS {
print("TODO tio\n", to_standard_error = true);
}
else {
assert(false, "unsupported OS\n");
}
}
tui_write :: (str : string) {
#if OS == .LINUX {
write(STDIN_FILENO, str.data, xx str.count);
}
else #if OS == .WINDOWS {
#run print("TODO tio\n", to_standard_error = true);
}
else {
#run assert(false, "unsupported OS\n");
}
}
buffer: [..] Key;
tui_ungetch :: (key: Key) {
array_add(*buffer, key);
}
tui_getch :: (block := true) -> Key {
#if OS == .LINUX {
buf : Key = xx 0;
if buffer.count > 0 return pop(*buffer);
l := read(STDIN_FILENO, (cast(*u8)*buf), 8); //!!!
check_signal :: inline (key : Key) {
#if ENABLE_SIGINT if key == .CTRL_C raise(SIGINT); //!!!
#if ENABLE_SIGQUIT if key == .CTRL_BACKSLASH raise(SIGQUIT);
}
check_signal(buf);
return ifx l <= 0 then Key.READ_ERROR else buf;
}
else #if OS == .WINDOWS {
print("TODO tio\n", to_standard_error = true);
return .READ_ERROR;
}
else {
assert(false, "unsupported OS\n");
return .READ_ERROR;
}
}
tui_clear_screen :: inline () {
tui_write("\e[2J");
}
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