/*      $NetBSD: hack.terminfo.c,v 1.3 2021/05/02 12:50:44 rillig Exp $ */

/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Copyright (c) 1982 Jay Fenlason <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: hack.terminfo.c,v 1.3 2021/05/02 12:50:44 rillig Exp $");
#endif                          /* not lint */

#include <string.h>
#include <termios.h>
#include <term.h>
#include <stdlib.h>
#include <unistd.h>
#include "hack.h"
#include "extern.h"
#include "def.flag.h"           /* for flags.nonull */

char           *CD;             /* tested in pri.c: docorner() */
int             CO, LI;         /* used in pri.c and whatis.c */

void
startup(void)
{

       /* Will exit if no suitable term found */
       setupterm(NULL, 0, NULL);
       CO = columns;
       LI = lines;
       if (CO < COLNO || LI < ROWNO + 2)
               setclipped();
       if (clear_screen == NULL)
               error("Hack needs clear_screen.");
       if (over_strike)
               error("Hack can't have over_strike.");
       if (cursor_address == NULL) {
               printf("Playing hack without cursor_address is suspect...");
               getret();
       }
       set_whole_screen();
}

void
startscreen(void)
{
}

void
endscreen(void)
{
}

static int
xputc(int c)
{
       return (fputc(c, stdout));
}

static void
xputs(const char *s)
{
       tputs(s, 1, xputc);
}

static void
cmov(int x, int y)
{
       char *p;

       p = tiparm(cursor_address, y - 1, x - 1);
       if (p) {
               xputs(p);
               cury = y;
               curx = x;
       }
}

static void
nocmov(int x, int y)
{
       if (cury > y) {
               if (cursor_up) {
                       while (cury > y) {      /* Go up. */
                               xputs(cursor_up);
                               cury--;
                       }
               } else if (cursor_address) {
                       cmov(x, y);
               } else if (cursor_home) {
                       home();
                       curs(x, y);
               }               /* else impossible("..."); */
       } else if (cury < y) {
               if (cursor_address) {
                       cmov(x, y);
#if 0
               } else if (XD) {
                       while (cury < y) {
                               xputs(XD);
                               cury++;
                       }
#endif
               } else {
                       while (cury < y) {
                               xputc('\n');
                               curx = 1;
                               cury++;
                       }
               }
       }
       if (curx < x) {         /* Go to the right. */
               if (!cursor_right)
                       cmov(x, y);
               else            /* bah */
                       /* should instead print what is there already */
                       while (curx < x) {
                               xputs(cursor_right);
                               curx++;
                       }
       } else if (curx > x) {
               while (curx > x)
                       backsp();
       }
}

/*
* Cursor movements
*
* x,y not xchar: perhaps xchar is unsigned and
* curx-x would be unsigned as well
*/
void
curs(int x, int y)
{

       if (y == cury && x == curx)
               return;
       if (!cursor_right && (curx != x || x <= 3)) { /* Extremely primitive */
               cmov(x, y);     /* bunker!wtm */
               return;
       }
       if (abs(cury - y) <= 3 && abs(curx - x) <= 3)
               nocmov(x, y);
       else if ((x <= 3 && abs(cury - y) <= 3) ||
           (!cursor_address && x < abs(curx - x)))
       {
               (void) putchar('\r');
               curx = 1;
               nocmov(x, y);
       } else if (!cursor_address) {
               nocmov(x, y);
       } else
               cmov(x, y);
}

void
cl_end(void)
{
       if (clr_eol)
               xputs(clr_eol);
       else {                  /* no-CE fix - free after Harold Rynes */
               /*
                * this looks terrible, especially on a slow terminal but is
                * better than nothing
                */
               int cx = curx, cy = cury;

               while (curx < COLNO) {
                       xputc(' ');
                       curx++;
               }
               curs(cx, cy);
       }
}

void
clearscreen(void)
{
       xputs(clear_screen);
       curx = cury = 1;
}

void
home(void)
{
       char *out;

       if (cursor_home)
               xputs(cursor_home);
       else if ((cursor_address) && (out = tiparm(cursor_address, 0, 0)))
               xputs(out);
       else
               curs(1, 1);     /* using UP ... */
       curx = cury = 1;
}

void
standoutbeg(void)
{
       if (enter_standout_mode && exit_standout_mode && !magic_cookie_glitch)
               xputs(enter_standout_mode);
}

void
standoutend(void)
{
       if (exit_standout_mode && enter_standout_mode && !magic_cookie_glitch)
               xputs(exit_standout_mode);
}

void
backsp(void)
{
       if (cursor_left)
               xputs(cursor_left);
       else
               (void) putchar('\b');
       curx--;
}

void
sound_bell(void)
{
       (void) putchar('\007'); /* curx does not change */
       (void) fflush(stdout);
}

void
delay_output(void)
{

       /* delay 50 ms - could also use a 'nap'-system call */
         /* or the usleep call like this :-) */
       usleep(50000);
}

void
cl_eos(void)
{                               /* free after Robert Viduya *//* must only be
                                * called with curx = 1 */

       if (clr_eos)
               xputs(clr_eos);
       else {
               int             cx = curx, cy = cury;
               while (cury <= LI - 2) {
                       cl_end();
                       xputc('\n');
                       curx = 1;
                       cury++;
               }
               cl_end();
               curs(cx, cy);
       }
}

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