conio.h

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/* A conio.h like implementation for VTANSI displays.
 *
 * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef __cplusplus
extern "C"
{
#endif

#ifndef LIBITE_CONIO_H_
#define LIBITE_CONIO_H_

#include <stdio.h>

#define RESETATTR    0
#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
#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

#ifndef SCREEN_WIDTH
#define SCREEN_WIDTH 80 
#endif

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

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

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

#define gotoxy(x,y)           fprintf(stdout, "\033[%d;%dH", y, x)

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

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

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

#define textattr(attr)        __set_gm(attr, 0, 0)

#define textcolor(color)      __set_gm(RESETATTR, color, 30)

#define textbackground(color) __set_gm(RESETATTR, color, 40)

void initscr(int *row, int *col);

static inline void printhdr(FILE *fp, const char *line, int nl, int attr)
{
    if (attr < 0 || attr > 8)
        attr = REVERSE;

    fprintf(fp ?: stdout,
        "%s\033[%dm%s%*s\033[0m\n",
        nl ? "\n" : "", attr, line,
        SCREEN_WIDTH - (int)strlen(line), "");
}

static inline void printheader(FILE *fp, const char *line, int nl)
{
    printhdr(fp, line, nl, REVERSE);
}

#endif /* LIBITE_CONIO_H_ */

#ifdef __cplusplus
}
#endif