/* $RCSfile: curses.mus,v $$Revision: 1.1 $$Date: 1995/03/24 04:33:49 $
 *
 * $Log: curses.mus,v $
# Revision 1.1  1995/03/24  04:33:49  jkh
# Bring back perl/usub as usub/, this time containing an updated curseperl
# which is also installed by default (the reason for which should also be
# plain shortly).
#
 * Revision 4.0.1.2  92/06/08  16:06:12  lwall
 * patch20: function key support added to curses.mus
 * 
 * Revision 4.0.1.1  91/11/05  19:06:19  lwall
 * patch11: usub/curses.mus now supports SysV curses
 * 
 * Revision 4.0  91/03/20  01:56:13  lwall
 * 4.0 baseline.
 * 
 * Revision 3.0.1.1  90/08/09  04:05:21  lwall
 * patch19: Initial revision
 * 
 */

#include "EXTERN.h"
#include "perl.h"

char *savestr();
static char *getcap();

#undef bool
#include <ncurses.h>

#ifndef A_UNDERLINE
#define NOSETATTR
#define A_STANDOUT  0x0200
#define A_UNDERLINE 0x0100
#define A_REVERSE   0x0200
#define A_BLINK     0x0400
#define A_BOLD      0x0800
#define A_ALTCHARSET 0x1000    
#define A_NORMAL    0
#endif

#ifdef USG
static char *tcbuf = NULL;
#endif

#ifdef NOSETATTR
static unsigned curattr = NORMAL;
#endif

enum uservars {
    UV_curscr,
    UV_stdscr,
    UV_LINES,
    UV_COLS,
    UV_ERR,
    UV_OK,
    UV_A_STANDOUT,
    UV_A_UNDERLINE,
    UV_A_REVERSE,
    UV_A_BLINK,
    UV_A_DIM,
    UV_A_BOLD,
    UV_A_NORMAL,
};

enum usersubs {
    US_addch,
    US_waddch,
    US_addstr,
    US_waddstr,
    US_box,
    US_clear,
    US_wclear,
    US_clearok,
    US_clrtobot,
    US_wclrtobot,
    US_clrtoeol,
    US_wclrtoeol,
    US_delch,
    US_wdelch,
    US_deleteln,
    US_wdeleteln,
    US_erase,
    US_werase,
    US_idlok,
    US_insch,
    US_winsch,
    US_insertln,
    US_winsertln,
    US_move,
    US_wmove,
    US_overlay,
    US_overwrite,
    US_refresh,
    US_wrefresh,
    US_standout,
    US_wstandout,
    US_standend,
    US_wstandend,
    US_cbreak,
    US_nocbreak,
    US_echo,
    US_noecho,
    US_getch,
    US_wgetch,
    US_getstr,
    US_wgetstr,
    US_raw,
    US_noraw,
    US_baudrate,
    US_delwin,
    US_endwin,
    US_erasechar,
    US_getyx,
    US_inch,
    US_winch,
    US_initscr,
    US_killchar,
    US_leaveok,
    US_longname,
    US_mvwin,
    US_newwin,
    US_nl,
    US_nonl,
    US_scrollok,
    US_subwin,
    US_touchline,
    US_touchwin,
    US_unctrl,
#ifndef __FreeBSD__
    US_gettmode,
#endif
    US_mvcur,
    US_scroll,
    US_savetty,
    US_resetty,
    US_attroff,
    US_wattroff,
    US_attron,
    US_wattron,
    US_attrset,
    US_wattrset,
#ifdef CURSEFMT
    US_printw, /* remove */
    US_wprintw, /* remove */
    US_scanw, 	/* delete */
    US_wscanw, 	/* delete */
#endif
    US_getcap,
    US_mysub,
    US_testcallback,
};

static int usersub();
static int userset();
static int userval();

int
init_curses()
{
    struct ufuncs uf;
    char *filename = "curses.c";

    uf.uf_set = userset;
    uf.uf_val = userval;

#define MAGICVAR(name, ix) uf.uf_index = ix, magicname(name, &uf, sizeof uf)

    MAGICVAR("curscr",	UV_curscr);
    MAGICVAR("stdscr",	UV_stdscr);
    MAGICVAR("LINES",	UV_LINES);
    MAGICVAR("COLS",	UV_COLS);
    MAGICVAR("ERR",	UV_ERR);
    MAGICVAR("OK",	UV_OK);
    MAGICVAR("A_STANDOUT", UV_A_STANDOUT);
    MAGICVAR("A_UNDERLINE", UV_A_UNDERLINE);
    MAGICVAR("A_REVERSE", UV_A_REVERSE);
    MAGICVAR("A_BLINK", UV_A_BLINK);
    MAGICVAR("A_DIM", UV_A_DIM);
    MAGICVAR("A_BOLD", UV_A_BOLD);
    MAGICVAR("A_NORMAL", UV_A_NORMAL);

    make_usub("addch",		US_addch,	usersub, filename);
    make_usub("waddch",		US_waddch,	usersub, filename);
    make_usub("addstr",		US_addstr,	usersub, filename);
    make_usub("waddstr",	US_waddstr,	usersub, filename);
    make_usub("box",		US_box,		usersub, filename);
    make_usub("clear",		US_clear,	usersub, filename);
    make_usub("wclear",		US_wclear,	usersub, filename);
    make_usub("clearok",	US_clearok,	usersub, filename);
    make_usub("clrtobot",	US_clrtobot,	usersub, filename);
    make_usub("wclrtobot",	US_wclrtobot,	usersub, filename);
    make_usub("clrtoeol",	US_clrtoeol,	usersub, filename);
    make_usub("wclrtoeol",	US_wclrtoeol,	usersub, filename);
    make_usub("delch",		US_delch,	usersub, filename);
    make_usub("wdelch",		US_wdelch,	usersub, filename);
    make_usub("deleteln",	US_deleteln,	usersub, filename);
    make_usub("wdeleteln",	US_wdeleteln,	usersub, filename);
    make_usub("erase",		US_erase,	usersub, filename);
    make_usub("werase",		US_werase,	usersub, filename);
    make_usub("idlok",		US_idlok,	usersub, filename);
    make_usub("insch",		US_insch,	usersub, filename);
    make_usub("winsch",		US_winsch,	usersub, filename);
    make_usub("insertln",	US_insertln,	usersub, filename);
    make_usub("winsertln",	US_winsertln,	usersub, filename);
    make_usub("move",		US_move,	usersub, filename);
    make_usub("wmove",		US_wmove,	usersub, filename);
    make_usub("overlay",	US_overlay,	usersub, filename);
    make_usub("overwrite",	US_overwrite,	usersub, filename);
    make_usub("refresh",	US_refresh,	usersub, filename);
    make_usub("wrefresh",	US_wrefresh,	usersub, filename);
    make_usub("standout",	US_standout,	usersub, filename);
    make_usub("wstandout",	US_wstandout,	usersub, filename);
    make_usub("standend",	US_standend,	usersub, filename);
    make_usub("wstandend",	US_wstandend,	usersub, filename);
    make_usub("cbreak",		US_cbreak,	usersub, filename);
    make_usub("nocbreak",	US_nocbreak,	usersub, filename);
    make_usub("echo",		US_echo,	usersub, filename);
    make_usub("noecho",		US_noecho,	usersub, filename);
    make_usub("getch",		US_getch,	usersub, filename);
    make_usub("wgetch",		US_wgetch,	usersub, filename);
    make_usub("getstr",		US_getstr,	usersub, filename);
    make_usub("wgetstr",	US_wgetstr,	usersub, filename);
    make_usub("raw",		US_raw,		usersub, filename);
    make_usub("noraw",		US_noraw,	usersub, filename);
    make_usub("baudrate",	US_baudrate,	usersub, filename);
    make_usub("delwin",		US_delwin,	usersub, filename);
    make_usub("endwin",		US_endwin,	usersub, filename);
    make_usub("erasechar",	US_erasechar,	usersub, filename);
    make_usub("getyx",		US_getyx,	usersub, filename);
    make_usub("inch",		US_inch,	usersub, filename);
    make_usub("winch",		US_winch,	usersub, filename);
    make_usub("initscr",	US_initscr,	usersub, filename);
    make_usub("killchar",	US_killchar,	usersub, filename);
    make_usub("leaveok",	US_leaveok,	usersub, filename);
    make_usub("longname",	US_longname,	usersub, filename);
    make_usub("mvwin",		US_mvwin,	usersub, filename);
    make_usub("newwin",		US_newwin,	usersub, filename);
    make_usub("nl",		US_nl,		usersub, filename);
    make_usub("nonl",		US_nonl,	usersub, filename);
    make_usub("scrollok",	US_scrollok,	usersub, filename);
    make_usub("subwin",		US_subwin,	usersub, filename);
    make_usub("touchline",	US_touchline,	usersub, filename);
    make_usub("touchwin",	US_touchwin,	usersub, filename);
    make_usub("unctrl",		US_unctrl,	usersub, filename);
#ifndef __FreeBSD__
    make_usub("gettmode",	US_gettmode,	usersub, filename);
#endif
    make_usub("mvcur",		US_mvcur,	usersub, filename);
    make_usub("scroll",		US_scroll,	usersub, filename);
    make_usub("savetty",	US_savetty,	usersub, filename);
    make_usub("resetty",	US_resetty,	usersub, filename);
    make_usub("getcap",		US_getcap,	usersub, filename);
    make_usub("attroff",        US_attroff,	usersub, filename);
    make_usub("wattroff",       US_wattroff,	usersub, filename);
    make_usub("attron",         US_attron,	usersub, filename);
    make_usub("wattron",        US_wattron,	usersub, filename);
    make_usub("attrset",        US_attrset,	usersub, filename);
    make_usub("wattrset",       US_wattrset,	usersub, filename);
#ifdef CURSEFMT
    make_usub("printw",		US_printw,	usersub, filename);
    make_usub("wprintw",	US_wprintw,	usersub, filename);
    make_usub("scanw",		US_scanw,	usersub, filename);
    make_usub("wscanw",		US_wscanw,	usersub, filename);
#endif
    make_usub("testcallback",	US_testcallback,usersub, filename);
  };
  
#ifdef NOSETATTR
#define attron(attr)    wattron(stdscr, attr)
#define attroff(attr)   wattroff(stdscr, attr)
#define attset(attr)    wattset(stdscr, attr)

int
wattron(win, attr)
WINDOW *win;
chtype attr;
{
    curattr |= attr;
    if (curattr & A_STANDOUT) {
	return(wstandout(win));
    } else {
	return(wstandend(win));
    }
}

int
wattroff(win, attr)
WINDOW *win;
chtype attr;
{
    curattr &= (~attr);
    if (curattr & A_STANDOUT) {
	return(wstandout(win));
    } else {
	return(wstandend(win));
    }
}

int
wattrset(win, attr)
WINDOW *win;
chtype attr;
{
    curattr = attr;
    if (curattr & A_STANDOUT) {
	return(wstandout(win));
    } else {
	return(wstandend(win));
    }
}

#endif
    
static int
usersub(ix, sp, items)
int ix;
register int sp;
register int items;
{
    STR **st = stack->ary_array + sp;
    register int i;
    register char *tmps;
    register STR *Str;		/* used in str_get and str_gnum macros */

    switch (ix) {
CASE int addch
I	char		ch
END

CASE int waddch
I	WINDOW*		win
I	char		ch
END

CASE int addstr
I	char*		str
END

CASE int waddstr
I	WINDOW*		win
I	char*		str
END

CASE int box
I	WINDOW*		win
I	char		vert
I	char		hor
END

CASE int clear
END

CASE int wclear
I	WINDOW*		win
END

CASE int clearok
I	WINDOW*		win
I	bool		boolf
END

CASE int clrtobot
END

CASE int wclrtobot
I	WINDOW*		win
END

CASE int clrtoeol
END

CASE int wclrtoeol
I	WINDOW*		win
END

CASE int delch
END

CASE int wdelch
I	WINDOW*		win
END

CASE int deleteln
END

CASE int wdeleteln
I	WINDOW*		win
END

CASE int erase
END

CASE int werase
I	WINDOW*		win
END

CASE int idlok
I	WINDOW*		win
I	bool		boolf
END

CASE int insch
I	char		c
END

CASE int winsch
I	WINDOW*		win
I	char		c
END

CASE int insertln
END

CASE int winsertln
I	WINDOW*		win
END

CASE int move
I	int		y
I	int		x
END

CASE int wmove
I	WINDOW*		win
I	int		y
I	int		x
END

CASE int overlay
I	WINDOW*		win1
I	WINDOW*		win2
END

CASE int overwrite
I	WINDOW*		win1
I	WINDOW*		win2
END

CASE int refresh
END

CASE int wrefresh
I	WINDOW*		win
END

CASE int standout
END

CASE int wstandout
I	WINDOW*		win
END

CASE int standend
END

CASE int wstandend
I	WINDOW*		win
END

CASE int cbreak
END

CASE int nocbreak
END

CASE int echo
END

CASE int noecho
END

    case US_getch:
	if (items != 0)
	    fatal("Usage: &getch()");
	else {
	    int retval;
	    char retch;

	    retval = getch();
	    if (retval == EOF)
		st[0] = &str_undef;
	    else {
		retch = retval;
		if (retval > 0377)
			str_numset(st[0], (double) retval);
		else
			str_nset(st[0], &retch, 1);
	    }
	}
	return sp;

    case US_wgetch:
	if (items != 1)
	    fatal("Usage: &wgetch($win)");
	else {
	    int retval;
	    char retch;
	    WINDOW*     win =           *(WINDOW**)     str_get(st[1]);

	    retval = wgetch(win);
	    if (retval == EOF)
		st[0] = &str_undef;
	    else {
		retch = retval;
		if (retval > 0377)
			str_numset(st[0], (double) retval);
		else
			str_nset(st[0], &retch, 1);
	    }
	}
	return sp;

CASE int getstr
O	char*		str
END

CASE int wgetstr
I	WINDOW*		win
O	char*		str
END

CASE int raw
END

CASE int noraw
END

CASE int baudrate
END

CASE int delwin
I	WINDOW*		win
END

CASE int endwin
END

CASE int erasechar
END

    case US_getyx:
	if (items != 3)
	    fatal("Usage: &getyx($win, $y, $x)");
	else {
	    int retval;
	    STR*	str =		str_new(0);
	    WINDOW*	win =		*(WINDOW**)	str_get(st[1]);
	    int		y;
	    int		x;

	    do_sprintf(str, items - 1, st + 1);
	    retval = getyx(win, y, x);
	    str_numset(st[2], (double)y);
	    str_numset(st[3], (double)x);
	    str_numset(st[0], (double) retval);
	    str_free(str);
	}
	return sp;
	
CASE int inch
END

CASE int winch
I	WINDOW*		win
END

CASE WINDOW* initscr
END

CASE int killchar
END

CASE int leaveok
I	WINDOW*		win
I	bool		boolf
END

#ifdef BSD
CASE char* longname
END
#else
CASE char* longname
I	char*		termbug
I	char*		name
END
#endif

CASE int mvwin
I	WINDOW*		win
I	int		y
I	int		x
END

CASE WINDOW* newwin
I	int		lines
I	int		cols
I	int		begin_y
I	int		begin_x
END

CASE int nl
END

CASE int nonl
END

CASE int scrollok
I	WINDOW*		win
I	bool		boolf
END

CASE WINDOW* subwin
I	WINDOW*		win
I	int		lines
I	int		cols
I	int		begin_y
I	int		begin_x
END

CASE int touchline
I	WINDOW*		win
I	int		y
I	int		startx
END

CASE int touchwin
I	WINDOW*		win
END

CASE char* unctrl
I	char		ch
END

#ifndef __FreeBSD__
CASE int gettmode
END
#endif

CASE int mvcur
I	int		lasty
I	int		lastx
I	int		newy
I	int		newx
END

CASE int scroll
I	WINDOW*		win
END

CASE int savetty
END

CASE void resetty
END

CASE int attroff
I       chtype          str
END

CASE int wattroff
I	WINDOW*		win
I       chtype          str
END

CASE int wattron
I	WINDOW*		win
I       chtype          str
END

CASE int attron
I       chtype          str
END

CASE int attrset
I       chtype          str
END

CASE int wattrset
I	WINDOW*		win
I       chtype          str
END

#ifdef	CURSEFMT
    case US_printw:
	if (items < 1)
	    fatal("Usage: &printw($fmt, $arg1, $arg2, ... )");
	else {
	    int retval;
	    STR*	str =		str_new(0);

	    do_sprintf(str, items - 1, st + 1);
	    retval = addstr(str->str_ptr);
	    str_numset(st[0], (double) retval);
	    str_free(str);
	}
	return sp;

    case US_wprintw:
	if (items < 2)
	    fatal("Usage: &wprintw($win, $fmt, $arg1, $arg2, ... )");
	else {
	    int retval;
	    STR*	str =		str_new(0);
	    WINDOW*	win =		*(WINDOW**)	str_get(st[1]);

	    do_sprintf(str, items - 1, st + 1);
	    retval = waddstr(win, str->str_ptr);
	    str_numset(st[0], (double) retval);
	    str_free(str);
	}
	return sp;

#endif
CASE char* getcap
I	char*		str
END
    default:
	fatal("Unimplemented user-defined subroutine");
    }
    return sp;
}

static char
*getcap(cap)
register char *cap;
{
    static char *tcbuf = NULL;
    static char nocaperr[] = "Cannot read termcap entry.";
    extern char *tgetstr();
    char *cp, *tp;
    static char capstr[256];

    cp = capstr;
    if (tcbuf == NULL) {
	if ((tcbuf = malloc(1024)) == NULL) {
	    fatal(nocaperr);
	}
	tp = getenv("TERM");
	if (!tp)
		tp = "tty";
	if (tgetent(tcbuf, tp) == -1) {
	    fatal(nocaperr);
	}
    }
    return (tgetstr(cap, &cp));
}

static int
userval(ix, str)
int ix;
STR *str;
{
    switch (ix) {
    case UV_COLS:
	str_numset(str, (double)COLS);
	break;
    case UV_ERR:
	str_numset(str, (double)ERR);
	break;
    case UV_LINES:
	str_numset(str, (double)LINES);
	break;
    case UV_OK:
	str_numset(str, (double)OK);
	break;
    case UV_curscr:
	str_nset(str, &curscr, sizeof(WINDOW*));
	break;
    case UV_stdscr:
	str_nset(str, &stdscr, sizeof(WINDOW*));
	break;
    case UV_A_STANDOUT:
	str_numset(str, (double)A_STANDOUT);
	break;
    case UV_A_UNDERLINE:
	str_numset(str, (double)A_UNDERLINE);
	break;
    case UV_A_REVERSE:
	str_numset(str, (double)A_REVERSE);
	break;
    case UV_A_BLINK:
	str_numset(str, (double)A_BLINK);
	break;
    case UV_A_DIM:
	str_numset(str, (double)A_DIM);
	break;
    case UV_A_BOLD:
	str_numset(str, (double)A_BOLD);
	break;
    case UV_A_NORMAL:
	str_numset(str, (double)A_NORMAL);
	break;
    }
    return 0;
}

static int
userset(ix, str)
int ix;
STR *str;
{
    switch (ix) {
    case UV_COLS:
	COLS = (int)str_gnum(str);
	break;
    case UV_LINES:
	LINES = (int)str_gnum(str);
	break;
    }
    return 0;
}