1/****************************************************************************
2 * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 *                                                                          *
33 *  Rewritten 2001-2004 to support wide-characters by                       *
34 *	Sven Verdoolaege                                                    *
35 *	Thomas Dickey                                                       *
36 ****************************************************************************/
37
38/*
39**	lib_addstr.c
40*
41**	The routines waddnstr(), waddchnstr().
42**
43*/
44
45#include <curses.priv.h>
46
47MODULE_ID("$Id: lib_addstr.c,v 1.48 2007/10/13 19:56:57 tom Exp $")
48
49NCURSES_EXPORT(int)
50waddnstr(WINDOW *win, const char *astr, int n)
51{
52    const char *str = astr;
53    int code = ERR;
54
55    T((T_CALLED("waddnstr(%p,%s,%d)"), win, _nc_visbufn(astr, n), n));
56
57    if (win && (str != 0)) {
58	TR(TRACE_VIRTPUT | TRACE_ATTRS,
59	   ("... current %s", _traceattr(WINDOW_ATTRS(win))));
60	code = OK;
61	if (n < 0)
62	    n = (int) strlen(astr);
63
64	TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
65	while ((n-- > 0) && (*str != '\0')) {
66	    NCURSES_CH_T ch;
67	    TR(TRACE_VIRTPUT, ("*str = %#o", UChar(*str)));
68	    SetChar(ch, UChar(*str++), A_NORMAL);
69	    if (_nc_waddch_nosync(win, ch) == ERR) {
70		code = ERR;
71		break;
72	    }
73	}
74	_nc_synchook(win);
75    }
76    TR(TRACE_VIRTPUT, ("waddnstr returns %d", code));
77    returnCode(code);
78}
79
80NCURSES_EXPORT(int)
81waddchnstr(WINDOW *win, const chtype *astr, int n)
82{
83    NCURSES_SIZE_T y, x;
84    int code = OK;
85    int i;
86    struct ldat *line;
87
88    T((T_CALLED("waddchnstr(%p,%p,%d)"), win, astr, n));
89
90    if (!win)
91	returnCode(ERR);
92
93    y = win->_cury;
94    x = win->_curx;
95    if (n < 0) {
96	const chtype *str;
97	n = 0;
98	for (str = (const chtype *) astr; *str != 0; str++)
99	    n++;
100    }
101    if (n > win->_maxx - x + 1)
102	n = win->_maxx - x + 1;
103    if (n == 0)
104	returnCode(code);
105
106    line = &(win->_line[y]);
107    for (i = 0; i < n && ChCharOf(astr[i]) != '\0'; ++i) {
108	SetChar2(line->text[i + x], astr[i]);
109    }
110    CHANGED_RANGE(line, x, x + n - 1);
111
112    _nc_synchook(win);
113    returnCode(code);
114}
115
116#if USE_WIDEC_SUPPORT
117
118NCURSES_EXPORT(int)
119_nc_wchstrlen(const cchar_t *s)
120{
121    int result = 0;
122    while (CharOf(s[result]) != L'\0') {
123	result++;
124    }
125    return result;
126}
127
128NCURSES_EXPORT(int)
129wadd_wchnstr(WINDOW *win, const cchar_t *astr, int n)
130{
131    static const NCURSES_CH_T blank = NewChar(BLANK_TEXT);
132    NCURSES_SIZE_T y;
133    NCURSES_SIZE_T x;
134    int code = OK;
135    struct ldat *line;
136    int i, j, start, len, end;
137
138    T((T_CALLED("wadd_wchnstr(%p,%s,%d)"), win, _nc_viscbuf(astr, n), n));
139
140    if (!win)
141	returnCode(ERR);
142
143    y = win->_cury;
144    x = win->_curx;
145    if (n < 0) {
146	n = _nc_wchstrlen(astr);
147    }
148    if (n > win->_maxx - x + 1)
149	n = win->_maxx - x + 1;
150    if (n == 0)
151	returnCode(code);
152
153    line = &(win->_line[y]);
154    start = x;
155    end = x + n - 1;
156
157    /*
158     * Reset orphaned cells of multi-column characters that extend up to the
159     * new string's location to blanks.
160     */
161    if (x > 0 && isWidecExt(line->text[x])) {
162	for (i = 0; i <= x; ++i) {
163	    if (!isWidecExt(line->text[x - i])) {
164		/* must be isWidecBase() */
165		start -= i;
166		while (i > 0) {
167		    line->text[x - i--] = _nc_render(win, blank);
168		}
169		break;
170	    }
171	}
172    }
173
174    /*
175     * Copy the new string to the window.
176     */
177    for (i = 0; i < n && CharOf(astr[i]) != L'\0' && x <= win->_maxx; ++i) {
178	if (isWidecExt(astr[i]))
179	    continue;
180
181	len = wcwidth(CharOf(astr[i]));
182
183	if (x + len - 1 <= win->_maxx) {
184	    line->text[x] = _nc_render(win, astr[i]);
185	    if (len > 1) {
186		for (j = 0; j < len; ++j) {
187		    if (j != 0) {
188			line->text[x + j] = line->text[x];
189		    }
190		    SetWidecExt(line->text[x + j], j);
191		}
192	    }
193	    x += len;
194	    end += len - 1;
195	} else {
196	    break;
197	}
198    }
199
200    /*
201     * Set orphaned cells of multi-column characters which lie after the new
202     * string to blanks.
203     */
204    while (x <= win->_maxx && isWidecExt(line->text[x])) {
205	line->text[x] = _nc_render(win, blank);
206	++end;
207	++x;
208    }
209    CHANGED_RANGE(line, start, end);
210
211    _nc_synchook(win);
212    returnCode(code);
213}
214
215NCURSES_EXPORT(int)
216waddnwstr(WINDOW *win, const wchar_t *str, int n)
217{
218    int code = ERR;
219
220    T((T_CALLED("waddnwstr(%p,%s,%d)"), win, _nc_viswbufn(str, n), n));
221
222    if (win && (str != 0)) {
223	TR(TRACE_VIRTPUT | TRACE_ATTRS,
224	   ("... current %s", _traceattr(WINDOW_ATTRS(win))));
225	code = OK;
226	if (n < 0)
227	    n = (int) wcslen(str);
228
229	TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
230	while ((n-- > 0) && (*str != L('\0'))) {
231	    NCURSES_CH_T ch;
232	    TR(TRACE_VIRTPUT, ("*str[0] = %#lx", (unsigned long) *str));
233	    SetChar(ch, *str++, A_NORMAL);
234	    if (wadd_wch(win, &ch) == ERR) {
235		code = ERR;
236		break;
237	    }
238	}
239	_nc_synchook(win);
240    }
241    TR(TRACE_VIRTPUT, ("waddnwstr returns %d", code));
242    returnCode(code);
243}
244
245#endif
246