lib_addstr.c   [plain text]

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/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 *                                                                          *
 *  Rewritten 2001-2002 to support wide-characters by                       *
 *	Sven Verdoolaege                                                    *
 *	Thomas Dickey                                                       *
 ****************************************************************************/

/*
**	lib_addstr.c
*
**	The routines waddnstr(), waddchnstr().
**
*/

#include <curses.priv.h>

MODULE_ID("$Id: lib_addstr.c,v 1.39 2003/12/06 18:04:33 tom Exp $")

NCURSES_EXPORT(int)
waddnstr(WINDOW *win, const char *astr, int n)
{
    const char *str = astr;
    int code = ERR;

    T((T_CALLED("waddnstr(%p,%s,%d)"), win, _nc_visbufn(astr, n), n));

    if (win && (str != 0)) {
	TR(TRACE_VIRTPUT | TRACE_ATTRS, ("... current %s", _traceattr(win->_attrs)));
	code = OK;
	if (n < 0)
	    n = (int) strlen(astr);

	TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
	while ((n-- > 0) && (*str != '\0')) {
	    NCURSES_CH_T ch;
	    TR(TRACE_VIRTPUT, ("*str = %#o", UChar(*str)));
	    SetChar(ch, UChar(*str++), A_NORMAL);
	    if (_nc_waddch_nosync(win, ch) == ERR) {
		code = ERR;
		break;
	    }
	}
	_nc_synchook(win);
    }
    TR(TRACE_VIRTPUT, ("waddnstr returns %d", code));
    returnCode(code);
}

NCURSES_EXPORT(int)
waddchnstr(WINDOW *win, const chtype *astr, int n)
{
    NCURSES_SIZE_T y = win->_cury;
    NCURSES_SIZE_T x = win->_curx;
    int code = OK;
    struct ldat *line;

    T((T_CALLED("waddchnstr(%p,%p,%d)"), win, astr, n));

    if (!win)
	returnCode(ERR);

    if (n < 0) {
	const chtype *str;
	n = 0;
	for (str = (const chtype *) astr; *str != 0; str++)
	    n++;
    }
    if (n > win->_maxx - x + 1)
	n = win->_maxx - x + 1;
    if (n == 0)
	returnCode(code);

    line = &(win->_line[y]);
#if USE_WIDEC_SUPPORT
    {
	int i;
	for (i = 0; i < n; ++i)
	    SetChar(line->text[i + x], ChCharOf(astr[i]), ChAttrOf(astr[i]));
    }
#else
    memcpy(line->text + x, astr, n * sizeof(*astr));
#endif
    CHANGED_RANGE(line, x, x + n - 1);

    _nc_synchook(win);
    returnCode(code);
}

#if USE_WIDEC_SUPPORT

NCURSES_EXPORT(int)
_nc_wchstrlen(const cchar_t * s)
{
    int result = 0;
    while (CharOf(s[result]) != L'\0') {
	result++;
    }
    return result;
}

NCURSES_EXPORT(int)
wadd_wchnstr(WINDOW *win, const cchar_t * astr, int n)
{
    NCURSES_SIZE_T y = win->_cury;
    NCURSES_SIZE_T x = win->_curx;
    int code = OK;
    struct ldat *line;
    int i, start, end;

    T((T_CALLED("wadd_wchnstr(%p,%s,%d)"), win, _nc_viscbuf(astr, n), n));

    if (!win)
	returnCode(ERR);

    if (n < 0) {
	n = _nc_wchstrlen(astr);
    }
    if (n > win->_maxx - x + 1)
	n = win->_maxx - x + 1;
    if (n == 0)
	returnCode(code);

    line = &(win->_line[y]);
    start = x;
    end = x + n - 1;
    if (isnac(line->text[x])) {
	line->text[x - 1] = win->_nc_bkgd;
	--start;
    }
    for (i = 0; i < n && x <= win->_maxx; ++i) {
	line->text[x++] = astr[i];
	if (wcwidth(CharOf(astr[i])) > 1) {
	    if (x <= win->_maxx)
		AddAttr(line->text[x++], WA_NAC);
	    else
		line->text[x - 1] = win->_nc_bkgd;
	}
    }
    if (x <= win->_maxx && isnac(line->text[x])) {
	line->text[x] = win->_nc_bkgd;
	++end;
    }
    CHANGED_RANGE(line, start, end);

    _nc_synchook(win);
    returnCode(code);
}

NCURSES_EXPORT(int)
waddnwstr(WINDOW *win, const wchar_t * str, int n)
{
    int code = ERR;

    T((T_CALLED("waddnwstr(%p,%s,%d)"), win, _nc_viswbufn(str, n), n));

    if (win && (str != 0)) {
	TR(TRACE_VIRTPUT | TRACE_ATTRS, ("... current %s", _traceattr(win->_attrs)));
	code = OK;
	if (n < 0)
	    n = (int) wcslen(str);

	TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
	while ((n-- > 0) && (*str != L('\0'))) {
	    NCURSES_CH_T ch;
	    TR(TRACE_VIRTPUT, ("*str[0] = %#lx", (unsigned long) *str));
	    SetChar(ch, *str++, A_NORMAL);
	    if (wadd_wch(win, &ch) == ERR) {
		code = ERR;
		break;
	    }
	}
	_nc_synchook(win);
    }
    TR(TRACE_VIRTPUT, ("waddnwstr returns %d", code));
    returnCode(code);
}

#endif