xref: /titanic_51/usr/src/lib/libcurses/screen/wgetwstr.c (revision da14cebe459d3275048785f25bd869cb09b5307f)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*  Copyright (c) 1988 AT&T */
23 /*    All Rights Reserved   */
24 
25 
26 /*
27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
28  *      All rights reserved.
29  */
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 /*LINTLIBRARY*/
34 
35 #include	<sys/types.h>
36 #include	"curses_inc.h"
37 
38 #define		LENGTH	256
39 
40 /* This routine gets a string starting at (_cury, _curx) */
41 int
42 wgetwstr(WINDOW *win, wchar_t *str)
43 {
44 	return ((wgetnwstr(win, str, LENGTH) == ERR) ? ERR : OK);
45 }
46 
47 int
48 wgetnwstr(WINDOW *win, wchar_t *str, int n)
49 {
50 	int	cpos = 0, ch;
51 	wchar_t	*cp = str;
52 	int	i = 0;
53 	int	total = 0;
54 	char	myerase, mykill;
55 	char	rownum[LENGTH], colnum[LENGTH], length[LENGTH];
56 	int	doecho = SP->fl_echoit;
57 	int	savecb = cur_term->_fl_rawmode;
58 	bool	savsync, savimmed, savleave;
59 
60 #ifdef	DEBUG
61 	if (outf)
62 		fprintf(outf, "doecho %d, savecb %d\n", doecho, savecb);
63 #endif	/* DEBUG */
64 
65 	myerase = erasechar();
66 	mykill = killchar();
67 	if (!savecb)
68 		(void) cbreak();
69 
70 	if (doecho) {
71 		SP->fl_echoit = FALSE;
72 		savsync = win->_sync;
73 		savimmed = win->_immed;
74 		savleave = win->_leave;
75 		win->_immed = win->_sync = win->_leave = FALSE;
76 		(void) wrefresh(win);
77 		if (n > LENGTH)
78 			n = LENGTH;
79 	}
80 	n--;
81 
82 	while (cpos < n) {
83 		if (doecho) {
84 			rownum[cpos] = win->_cury;
85 			colnum[cpos] = win->_curx;
86 		}
87 
88 		ch = wgetwch(win);
89 		if ((ch == ERR) || (ch == '\n') || (ch == '\r') ||
90 		    (ch == KEY_ENTER))
91 			break;
92 		if ((ch == myerase) || (ch == KEY_LEFT) ||
93 		    (ch == KEY_BACKSPACE) || (ch == mykill)) {
94 			if (cpos > 0) {
95 				if (ch == mykill) {
96 					i = total;
97 					total = cpos = 0;
98 					cp = str;
99 				} else {
100 					cp--;
101 					cpos--;
102 					if (doecho)
103 						total -= (i = length[cpos]);
104 				}
105 				if (doecho) {
106 					(void) wmove(win, rownum[cpos],
107 					    colnum[cpos]);
108 					/* Add the correct amount of blanks. */
109 					for (; i > 0; i--)
110 						(void) waddch(win, ' ');
111 					/* Move back after the blanks */
112 					/* are put in. */
113 					(void) wmove(win, rownum[cpos],
114 					    colnum[cpos]);
115 					/* Update total. */
116 					(void) wrefresh(win);
117 				}
118 			} else
119 				if (doecho)
120 					(void) beep();
121 		} else
122 			if ((KEY_MIN <= ch) && (ch <= KEY_MAX))
123 				(void) beep();
124 			else {
125 				*cp++ = ch;
126 				if (doecho) {
127 					/* Add the length of the */
128 					/* character to total. */
129 					if ((ch & EUCMASK) != P00)
130 						length[cpos] = wcscrw(ch);
131 					else if (ch >= ' ')
132 						length[cpos] = 1;
133 					else if (ch == '\t')
134 						length[cpos] = TABSIZE -
135 						    (colnum[cpos] % TABSIZE);
136 					else
137 						length[cpos] = 2;
138 					total += length[cpos];
139 					(void) wechowchar(win, (chtype) ch);
140 				}
141 				cpos++;
142 			}
143 	}
144 
145 	*cp = '\0';
146 
147 	if (!savecb)
148 		(void) nocbreak();
149 	/*
150 	 * The following code is equivalent to waddch(win, '\n')
151 	 * except that it does not do a wclrtoeol.
152 	 */
153 	if (doecho) {
154 		SP->fl_echoit = TRUE;
155 		win->_curx = 0;
156 		if (win->_cury + 1 > win->_bmarg)
157 			(void) wscrl(win, 1);
158 		else
159 			win->_cury++;
160 
161 		win->_sync = savsync;
162 		win->_immed = savimmed;
163 		win->_leave = savleave;
164 		(void) wrefresh(win);
165 	}
166 	return (ch);
167 }
168