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 /*
23  * Copyright (c) 1995-1998 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /* LINTLIBRARY */
30 
31 /*
32  * wadd_wch.c
33  *
34  * XCurses Library
35  *
36  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
37  *
38  */
39 
40 #ifdef M_RCSID
41 #ifndef lint
42 static char rcsID[] =
43 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
44 "libxcurses/src/libc/xcurses/rcs/wadd_wch.c 1.5 1998/06/01 14:26:53 "
45 "cbates Exp $";
46 #endif
47 #endif
48 
49 #include <private.h>
50 
51 /* Special for calls from string add functions */
52 int
__m_wadd_wch(WINDOW * w,const cchar_t * cc)53 __m_wadd_wch(WINDOW *w, const cchar_t *cc)
54 {
55 	int	xsave = w->_curx;
56 	int	ysave = w->_cury;
57 	int	code = wadd_wch(w, cc);
58 
59 	if (code == ERR) {
60 		w->_curx = (short) xsave;
61 		w->_cury = (short) ysave;
62 	}
63 	return (code);
64 }
65 
66 /*
67  * Add a character (and attributes) to a window and advance the cursor.
68  * Automatic newline done at right margin, tabs are expanded every 8
69  * columns, backspaces are handled.  Newline will clear the rest of the
70  * line; if nl() mode then the cursor is advanced to the start of the
71  * next line.
72  */
73 int
wadd_wch(WINDOW * w,const cchar_t * cc)74 wadd_wch(WINDOW *w, const cchar_t *cc)
75 {
76 	cchar_t	uc;
77 	const wchar_t	*p;
78 	int	code, x, y;
79 	int	oflags;
80 
81 	oflags = w->_flags & (W_FLUSH | W_SYNC_UP);
82 
83 	code = ERR;
84 	x = w->_curx;
85 	y = w->_cury;
86 
87 	if (x < 0 || w->_maxx <= x || y < 0 || w->_maxy <= y)
88 		goto error;
89 
90 	if (iswprint(cc->_wc[0]) || cc->_wc[0] == L'\n' ||
91 		cc->_wc[0] == L'\b' || cc->_wc[0] == L'\r') {
92 		if (__m_cc_add(w, y, x, cc, 0, &y, &x) == ERR)
93 			goto error;
94 	} else if (cc->_wc[0] == L'\t') {
95 		/*
96 		 * Experimental ...
97 		 * Maybe other cntrl chars should do this too ...
98 		 */
99 		if (__m_cc_add(w, y, x, cc, 0, &y, &x) == ERR) {
100 			w->_curx = (short) x;
101 			w->_cury = (short) y;
102 			WSYNC(w);
103 			WFLUSH(w);
104 			goto error;
105 		}
106 	} else {
107 		/* Convert non-printables into printable representation. */
108 		uc._n = 1;
109 		uc._at = cc->_at;
110 		uc._co = cc->_co;
111 
112 		if ((p = wunctrl((cchar_t *)cc)) == NULL)
113 			goto error;
114 
115 		for (; *p != '\0'; ++p) {
116 			uc._wc[0] = *p;
117 			if (__m_cc_add(w, y, x, &uc, 0, &y, &x) == ERR)
118 				goto error;
119 		}
120 	}
121 
122 	w->_curx = (short) x;
123 	w->_cury = (short) y;
124 
125 	WSYNC(w);
126 
127 	code = WFLUSH(w);
128 error:
129 	w->_flags = oflags | (w->_flags & ~(W_FLUSH | W_SYNC_UP));
130 
131 	return (code);
132 }
133