xref: /openbsd-src/lib/libcurses/base/lib_instr.c (revision 62a742911104f98b9185b2c6b6007d9b1c36396c)
1 /*	$OpenBSD: lib_instr.c,v 1.1 1999/01/18 19:09:50 millert Exp $	*/
2 
3 /****************************************************************************
4  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
5  *                                                                          *
6  * Permission is hereby granted, free of charge, to any person obtaining a  *
7  * copy of this software and associated documentation files (the            *
8  * "Software"), to deal in the Software without restriction, including      *
9  * without limitation the rights to use, copy, modify, merge, publish,      *
10  * distribute, distribute with modifications, sublicense, and/or sell       *
11  * copies of the Software, and to permit persons to whom the Software is    *
12  * furnished to do so, subject to the following conditions:                 *
13  *                                                                          *
14  * The above copyright notice and this permission notice shall be included  *
15  * in all copies or substantial portions of the Software.                   *
16  *                                                                          *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
20  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
23  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
24  *                                                                          *
25  * Except as contained in this notice, the name(s) of the above copyright   *
26  * holders shall not be used in advertising or otherwise to promote the     *
27  * sale, use or other dealings in this Software without prior written       *
28  * authorization.                                                           *
29  ****************************************************************************/
30 
31 /****************************************************************************
32  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
33  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
34  ****************************************************************************/
35 
36 
37 /*
38 **	lib_instr.c
39 **
40 **	The routine winnstr().
41 **
42 */
43 
44 #include <curses.priv.h>
45 
46 MODULE_ID("$From: lib_instr.c,v 1.8 1998/02/11 12:13:54 tom Exp $")
47 
48 int winnstr(WINDOW *win, char *str, int n)
49 {
50 	int	i=0, row, col;
51 
52 	T((T_CALLED("winnstr(%p,%p,%d)"), win, str, n));
53 
54 	if (!str)
55 	  returnCode(0);
56 
57 	if (win) {
58 	  getyx(win, row, col);
59 
60 	  if (n < 0)
61 	    n = win->_maxx - win->_curx + 1;
62 
63 	  for (; i < n;) {
64 	    str[i++] = TextOf(win->_line[row].text[col]);
65 	    if (++col > win->_maxx) {
66 	      col = 0;
67 	      if (++row > win->_maxy)
68 		break;
69 	    }
70 	  }
71 	}
72 	str[i] = '\0';	/* SVr4 does not seem to count the null */
73 	returnCode(i);
74 }
75 
76