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#import "Basic";
#import "String";
Drawings :: struct {
CornerBR :: "\x6A";
CornerTR :: "\x6B";
CornerTL :: "\x6C";
CornerBL :: "\x6D";
Cross :: "\x6E";
LineH :: "\x71";
TeeL :: "\x74";
TeeR :: "\x75";
TeeB :: "\x76";
TeeT :: "\x77";
LineV :: "\x78";
Blank :: "\x5F";
Diamond :: "\x60";
Checkerboard :: "\x61";
PlusMinus :: "\x67";
LessThanOrEqual :: "\x79";
GreaterThanOrEqual :: "\x7A";
Pi :: "\x7B";
NotEqual :: "\x7C";
CenteredDot :: "\x7E";
}
Commands :: struct {
EnterAlternateBuffer :: "\e[?1049h";
EnterMainBuffer :: "\e[?1049l";
EnterDrawingMode :: "\e(0";
EnterNormalMode :: "\e(B";
ClearScreen :: "\e[2J";
ClearLine :: "\e[2K";
RefreshWindow :: "\e[7t"; // TODO Not yet tested.
SetUTF8 :: "\e%G"; // TODO TEST ME PLEASE
// Cursor Visibility
ShowCursor :: "\e[?25h";
HideCursor :: "\e[?25l";
StartBlinking :: "\e[?25h]";
StopBlinking :: "\e[?25l]";
SaveCursorPosition :: "\e7";
RestoreCursorPosition :: "\e8";
// Cursor Shape
DefaultShape :: "\e[0 q";
BlinkingBlockShape :: "\e[1 q";
SteadyBlockShape :: "\e[2 q";
BlinkingUnderlineShape :: "\e[3 q";
SteadyUnderlineShape :: "\e[4 q";
BlinkingBarShape :: "\e[5 q";
SteadyBarShape :: "\e[6 q";
// Input Mode
KeypadAppMode :: "\e=";
KeypadNumMode :: "\e>";
CursorAppMode :: "\e[?1h";
CursorNormalMode :: "\e[?1l";
// Query State
QueryCursorPosition :: "\e[6n"; // Emits the cursor position as: "ESC [ <r> ; <c> R" Where <r> = row and <c> = column.
QueryDeviceAttributes :: "\e[0c";
QueryWindowSizeInChars :: "\e[18t"; // Emits the window size as: "ESC [ 8 <r> ; <c> t" Where <r> = row and <c> = column.
}
start :: () {
// TODO Required to do unlocking input.
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);
write_strings(Commands.HideCursor, Commands.SaveCursorPosition, Commands.EnterAlternateBuffer, Commands.SetUTF8);
}
stop :: () {
write_strings(Commands.EnterMainBuffer, Commands.RestoreCursorPosition, Commands.ShowCursor);
tcsetattr(STDIN_FILENO, 0, *__term); // return echo
}
draw_box :: (x: int, y: int, width: int, height: int, to_standard_error := false) {
write_strings(
// Commands.EnterNormalMode,
Commands.EnterDrawingMode,
"\e[1;1H", // Move to position 1,1
// TODO // Move pointer to top-left corner.
Drawings.CornerTL,
to_standard_error = to_standard_error);
for 1..width-2 {
write_string(Drawings.LineH, to_standard_error = to_standard_error);
}
write_string(Drawings.CornerTR, to_standard_error = to_standard_error);
// TODO Take care of the temporary allocations.
for idx: 2..height-1 {
tmpL := tprint("\e[%;%H", idx, 1);
tmpR := tprint("\e[%;%H", idx, width);
write_strings(
tmpL,
Drawings.LineV,
tmpR,
Drawings.LineV,
to_standard_error = to_standard_error);
}
tmpBL := tprint("\e[%;%H", height, 1);
write_strings(
tmpBL,
Drawings.CornerBL,
to_standard_error = to_standard_error);
for 1..width-2 {
write_string(Drawings.LineH, to_standard_error = to_standard_error);
}
write_string(Drawings.CornerBR, to_standard_error = to_standard_error);
write_strings(
// TODO // print
Commands.EnterNormalMode,
to_standard_error = to_standard_error);
}
clear_screen :: inline () {
write_string(Commands.ClearScreen);
}
// read_input: () -> string;
#if OS == .LINUX {
#import "Basic";
#import "POSIX";
__term : My_Termios;
My_Termios :: struct {
c_iflag : u32; // Input modes.
c_oflag : u32; // Output modes.
c_cflag : u32; // Control modes.
c_lflag : u32; // Local modes.
unknown_pad : u8;
c_cc : [32]u8; // Special characters.
c_ispeed : u32; // Input baud rates.
c_ospeed : u32; // Output baud rates.
}
// Required to do unlocking input.
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;
read_input :: () -> string {
buffer: [8192] u8;
bytes_read := read(STDIN_FILENO, buffer.data, buffer.count-1);
str := to_string(buffer.data, bytes_read);
return str;
};
get_cena :: () -> rows: int, columns: int {
buffer: [512] u8;
write_string(Commands.QueryWindowSizeInChars);
bytes_read := read(STDIN_FILENO, buffer.data, buffer.count-1);
str := to_string(buffer.data, bytes_read);
// Result: [8;79;156t
assert(
buffer.data[0] == #char "\e" &&
buffer.data[1] == #char "[" &&
buffer.data[2] == #char "8",
"Query windows size in chars returned invalid response.");
parts := split(str, ";");
rows := parse_int(*parts[1]);
columns := parse_int(*parts[2]);
return rows, columns;
}
}
else #if OS == .WINDOWS {
#import "Windows";
kernel32 :: #system_library "kernel32";
stdin, stdout : HANDLE;
stdin = GetStdHandle( STD_INPUT_HANDLE );
ReadConsoleA :: (
hConsoleHandle: HANDLE,
buff : *u8,
chars_to_read : s32,
chars_read : *s32,
lpInputControl := *void
) -> bool #foreign kernel32;
// #run read_input = () -> string {
read_input :: () -> string {
MAX_BYTES_TO_READ :: 1024;
temp : [MAX_BYTES_TO_READ] u8;
result: string = ---;
bytes_read : s32;
if !ReadConsoleA( stdin, temp.data, xx temp.count, *bytes_read )
return "";
result.data = alloc(bytes_read);
result.count = bytes_read;
memcpy(result.data, temp.data, bytes_read);
return result;
};
}
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