#include <stdio.h>

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Macros
#define	LIBITE_CONIO_H_

#define	RESETATTR 0
	Attributes.

#define	BRIGHT 1

#define	DIM 2

#define	UNDERSCORE 4

#define	BLINK 5 /* May not work on all displays. */

#define	REVERSE 7

#define	HIDDEN 8

#define	BLACK 0x0
	Colors for text and background.

#define	RED 0x1

#define	GREEN 0x2

#define	BROWN 0x3

#define	BLUE 0x4

#define	MAGENTA 0x5

#define	CYAN 0x6

#define	LIGHTGREY 0x7

#define	DARKGREY 0x10

#define	LIGHTRED 0x11

#define	LIGHTGREEN 0x12

#define	YELLOW 0x13

#define	LIGHTBLUE 0x14

#define	LIGHTMAGENTA 0x15

#define	LIGHTCYAN 0x16

#define	WHITE 0x17

#define	SCREEN_WIDTH 80
	Fallback screen width, possible to override. More...

#define	clrscr() fputs("\033[2J\033[1;1H", stdout)
	Clear screen and move cursor to 1,1 (upper left) pos. More...

#define	clreol() fputs("\033[K", stdout)
	Erases from the current cursor position to the end of the current line. More...

#define	delline() fputs("\033[2K", stdout)
	Erases the entire current line. More...

#define	gotoxy(x, y) fprintf(stdout, "\033[%d;%dH", y, x)
	Moves the cursor to the specified position (coordinates)

#define	hidecursor() fputs("\033[?25l", stdout)
	Hide Cursor.

#define	showcursor() fputs("\033[?25h", stdout)
	Show Cursor.

#define	__set_gm(a, c, v)
	Set Graphics Mode (attr, color, val) More...

#define	textattr(attr) __set_gm(attr, 0, 0)
	Set text attribute.

#define	textcolor(color) __set_gm(RESETATTR, color, 30)
	Set text color.

#define	textbackground(color) __set_gm(RESETATTR, color, 40)
	Set text background.

Functions
void	initscr (int row, int col)
	Probe terminal size. More...

Detailed Description

Author: Joachim Wiberg

Date: 2009-2021

Copyright: ISC License

Helper macros and functions for interacting with TTY terminals.

Macro Definition Documentation

◆ __set_gm

#define __set_gm	(	a,
		c,
		v
	)

Value:

if (!c)                             \
        fprintf(stdout, "\033[%dm", a);             \
    else                                \
        fprintf(stdout, "\033[%d;%dm", c & 0x10 ? 1 : 0, (c & 0xF) + v)

Set Graphics Mode (attr, color, val)

◆ clreol

#define clreol ( ) fputs("\033[K", stdout)

Erases from the current cursor position to the end of the current line.

◆ clrscr

#define clrscr ( ) fputs("\033[2J\033[1;1H", stdout)

Clear screen and move cursor to 1,1 (upper left) pos.

◆ delline

#define delline ( ) fputs("\033[2K", stdout)

Erases the entire current line.

◆ SCREEN_WIDTH

#define SCREEN_WIDTH 80

Fallback screen width, possible to override.

Function Documentation

◆ initscr()

void initscr	(	int *	row,
		int *	col
	)

Probe terminal size.

Parameters

row	pointer to integer to store number of rows
col	pointer to integer to store number of columns

This function checks if stdin and stdout isatty() and then sets the TTY in raw mode to silently ask the size using ANSI escape sequences. This is achieved by trying to go to corner 999,999 followed by querying the cursor position. Afterwards the TTY is returned to the state if was before, e.g. cooked. The number of rows and columns is returned in the input arguments to this function.

If stdio is not a TTY, then a default 24x80 is returned.

Macros

Functions