File: CursesVar.c

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/*  This file can be automatically generated; changes may be lost.
**
**
**  CursesVar.c -- the variables
**
**  Copyright (c) 1994-2000  William Setzer
**
**  You may distribute under the terms of either the Artistic License
**  or the GNU General Public License, as specified in the README file.
*/

XS(XS_Curses_LINES)
{
    dXSARGS;
#ifdef C_LINES
    c_exactargs("LINES", items, 0);
    {
	ST(0) = sv_newmortal();
	sv_setiv(ST(0), (IV)LINES);
    }
    XSRETURN(1);
#else
    c_var_not_there("LINES");
    XSRETURN(0);
#endif
}

XS(XS_Curses_COLS)
{
    dXSARGS;
#ifdef C_COLS
    c_exactargs("COLS", items, 0);
    {
	ST(0) = sv_newmortal();
	sv_setiv(ST(0), (IV)COLS);
    }
    XSRETURN(1);
#else
    c_var_not_there("COLS");
    XSRETURN(0);
#endif
}

XS(XS_Curses_stdscr)
{
    dXSARGS;
#ifdef C_STDSCR
    c_exactargs("stdscr", items, 0);
    {
	ST(0) = sv_newmortal();
	c_window2sv(ST(0), stdscr);
    }
    XSRETURN(1);
#else
    c_var_not_there("stdscr");
    XSRETURN(0);
#endif
}

XS(XS_Curses_curscr)
{
    dXSARGS;
#ifdef C_CURSCR
    c_exactargs("curscr", items, 0);
    {
	ST(0) = sv_newmortal();
	c_window2sv(ST(0), curscr);
    }
    XSRETURN(1);
#else
    c_var_not_there("curscr");
    XSRETURN(0);
#endif
}

XS(XS_Curses_COLORS)
{
    dXSARGS;
#ifdef C_COLORS
    c_exactargs("COLORS", items, 0);
    {
	ST(0) = sv_newmortal();
	sv_setiv(ST(0), (IV)COLORS);
    }
    XSRETURN(1);
#else
    c_var_not_there("COLORS");
    XSRETURN(0);
#endif
}

XS(XS_Curses_COLOR_PAIRS)
{
    dXSARGS;
#ifdef C_COLOR_PAIRS
    c_exactargs("COLOR_PAIRS", items, 0);
    {
	ST(0) = sv_newmortal();
	sv_setiv(ST(0), (IV)COLOR_PAIRS);
    }
    XSRETURN(1);
#else
    c_var_not_there("COLOR_PAIRS");
    XSRETURN(0);
#endif
}


XS(XS_Curses_Vars_TIESCALAR)
{
    dXSARGS;
    c_exactargs("TIESCALAR", items, 2);
    {
	char *	pack = (char *)SvPV_nolen(ST(0));
	int	n    = (int)SvIV(ST(1));

	ST(0) = sv_newmortal();
	sv_setref_iv(ST(0), pack, n);
    }
    XSRETURN(1);
}

XS(XS_Curses_Vars_FETCH)
{
    dXSARGS;
    {
	int	num = (int)SvIV(SvRV((SV*)ST(0)));

	ST(0) = sv_newmortal();
	switch (num) {
	case 1:
#ifdef C_LINES
	    sv_setiv(ST(0), (IV)LINES);
#else
	    c_var_not_there("LINES");
#endif
	    break;
	case 2:
#ifdef C_COLS
	    sv_setiv(ST(0), (IV)COLS);
#else
	    c_var_not_there("COLS");
#endif
	    break;
	case 3:
#ifdef C_STDSCR
	    c_window2sv(ST(0), stdscr);
#else
	    c_var_not_there("stdscr");
#endif
	    break;
	case 4:
#ifdef C_CURSCR
	    c_window2sv(ST(0), curscr);
#else
	    c_var_not_there("curscr");
#endif
	    break;
	case 5:
#ifdef C_COLORS
	    sv_setiv(ST(0), (IV)COLORS);
#else
	    c_var_not_there("COLORS");
#endif
	    break;
	case 6:
#ifdef C_COLOR_PAIRS
	    sv_setiv(ST(0), (IV)COLOR_PAIRS);
#else
	    c_var_not_there("COLOR_PAIRS");
#endif
	    break;
	default:
	    croak("Curses::Vars::FETCH called with bad index");
	    /* NOTREACHED */
	}
    }
    XSRETURN(1);
}

XS(XS_Curses_Vars_STORE)
{
    dXSARGS;
    {
#ifdef ALLOW_VARS_STORE
	int	num = (int)SvIV((SV*)SvRV(ST(0)));

	switch (num) {
	case 1:
#ifdef C_LINES
	    LINES = (int)SvIV(ST(1));
#else
	    c_var_not_there("LINES");
#endif
	    break;
	case 2:
#ifdef C_COLS
	    COLS = (int)SvIV(ST(1));
#else
	    c_var_not_there("COLS");
#endif
	    break;
	case 3:
#ifdef C_STDSCR
	    stdscr = c_sv2window(ST(1), -1);
#else
	    c_var_not_there("stdscr");
#endif
	    break;
	case 4:
#ifdef C_CURSCR
	    curscr = c_sv2window(ST(1), -1);
#else
	    c_var_not_there("curscr");
#endif
	    break;
	case 5:
#ifdef C_COLORS
	    COLORS = (int)SvIV(ST(1));
#else
	    c_var_not_there("COLORS");
#endif
	    break;
	case 6:
#ifdef C_COLOR_PAIRS
	    COLOR_PAIRS = (int)SvIV(ST(1));
#else
	    c_var_not_there("COLOR_PAIRS");
#endif
	    break;
	default:
	    croak("Curses::Vars::STORE called with bad index");
	    /* NOTREACHED */
	}
	ST(0) = &PL_sv_yes;
#else
    croak("Curses::Vars::STORE is not available in this version of "
          "Curses.pm.  Setting of variables is not allowed in recent "
          "Curses (C) libraries.");

    /* In January 2010, we first saw a version of Ncurses that does not
       allow setting of variables.  This has to do with making the library
       re-entrant.  The variables do not exist, but code that refers to them
       still works because the variable names are defined as macros that call
       functions that retrieve the value.  For some of the variables, it
       doesn't even make sense to set the variables, and we assume few programs
       ever exploited this ability, so simply removed it by default for
       everyone starting with the January 2010 release.
    
       If you have an old Ncurses library that allows setting of variables
       and really want this function in Curses.pm, #define ALLOW_VARS_STORE
       in your c-config.h.
    */
#endif
    }
    XSRETURN(1);
}

XS(XS_Curses_Vars_DESTROY)
{
    dXSARGS;
    {
	SV *	rv = ST(0);

	ST(0) = &PL_sv_yes;
    }
    XSRETURN(1);
}