Annotation of src/usr.bin/window/wwopen.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: wwopen.c,v 1.4 1995/09/28 10:35:42 tls Exp $ */
2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwopen.c 8.2 (Berkeley) 4/28/95";
42: #else
43: static char rcsid[] = "$NetBSD: wwopen.c,v 1.4 1995/09/28 10:35:42 tls Exp $";
44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48: #include <sys/types.h>
49: #include <sys/socket.h>
50: #include <fcntl.h>
51:
52: struct ww *
53: wwopen(flags, nrow, ncol, row, col, nline)
54: {
55: register struct ww *w;
56: register i, j;
57: char m;
58: short nvis;
59:
60: w = (struct ww *)calloc(sizeof (struct ww), 1);
61: if (w == 0) {
62: wwerrno = WWE_NOMEM;
63: goto bad;
64: }
65: w->ww_pty = -1;
66: w->ww_socket = -1;
67:
68: for (i = 0; i < NWW && wwindex[i] != 0; i++)
69: ;
70: if (i >= NWW) {
71: wwerrno = WWE_TOOMANY;
72: goto bad;
73: }
74: w->ww_index = i;
75:
76: if (nline < nrow)
77: nline = nrow;
78:
79: w->ww_w.t = row;
80: w->ww_w.b = row + nrow;
81: w->ww_w.l = col;
82: w->ww_w.r = col + ncol;
83: w->ww_w.nr = nrow;
84: w->ww_w.nc = ncol;
85:
86: w->ww_b.t = row;
87: w->ww_b.b = row + nline;
88: w->ww_b.l = col;
89: w->ww_b.r = col + ncol;
90: w->ww_b.nr = nline;
91: w->ww_b.nc = ncol;
92:
93: w->ww_i.t = MAX(w->ww_w.t, 0);
94: w->ww_i.b = MIN(w->ww_w.b, wwnrow);
95: w->ww_i.l = MAX(w->ww_w.l, 0);
96: w->ww_i.r = MIN(w->ww_w.r, wwncol);
97: w->ww_i.nr = w->ww_i.b - w->ww_i.t;
98: w->ww_i.nc = w->ww_i.r - w->ww_i.l;
99:
100: w->ww_cur.r = w->ww_w.t;
101: w->ww_cur.c = w->ww_w.l;
102:
103: if (flags & WWO_PTY) {
104: if (wwgetpty(w) < 0)
105: goto bad;
106: w->ww_ispty = 1;
107: } else if (flags & WWO_SOCKET) {
108: int d[2];
109: if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) {
110: wwerrno = WWE_SYS;
111: goto bad;
112: }
113: (void) fcntl(d[0], F_SETFD, 1);
114: (void) fcntl(d[1], F_SETFD, 1);
115: w->ww_pty = d[0];
116: w->ww_socket = d[1];
117: }
118: if (flags & (WWO_PTY|WWO_SOCKET)) {
119: if ((w->ww_ob = malloc(512)) == 0) {
120: wwerrno = WWE_NOMEM;
121: goto bad;
122: }
123: w->ww_obe = w->ww_ob + 512;
124: w->ww_obp = w->ww_obq = w->ww_ob;
125: if (w->ww_pty >= wwdtablesize)
126: wwdtablesize = w->ww_pty + 1;
127: }
128:
129: w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l,
130: w->ww_w.nr, w->ww_w.nc, sizeof (char));
131: if (w->ww_win == 0)
132: goto bad;
133: m = 0;
134: if (flags & WWO_GLASS)
135: m |= WWM_GLS;
136: if (flags & WWO_REVERSE)
137: if (wwavailmodes & WWM_REV)
138: m |= WWM_REV;
139: else
140: flags &= ~WWO_REVERSE;
141: for (i = w->ww_w.t; i < w->ww_w.b; i++)
142: for (j = w->ww_w.l; j < w->ww_w.r; j++)
143: w->ww_win[i][j] = m;
144:
145: if (flags & WWO_FRAME) {
146: w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l,
147: w->ww_w.nr, w->ww_w.nc, sizeof (char));
148: if (w->ww_fmap == 0)
149: goto bad;
150: for (i = w->ww_w.t; i < w->ww_w.b; i++)
151: for (j = w->ww_w.l; j < w->ww_w.r; j++)
152: w->ww_fmap[i][j] = 0;
153: }
154:
155: w->ww_buf = (union ww_char **)
156: wwalloc(w->ww_b.t, w->ww_b.l,
157: w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char));
158: if (w->ww_buf == 0)
159: goto bad;
160: for (i = w->ww_b.t; i < w->ww_b.b; i++)
161: for (j = w->ww_b.l; j < w->ww_b.r; j++)
162: w->ww_buf[i][j].c_w = ' ';
163:
164: w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short));
165: if (w->ww_nvis == 0) {
166: wwerrno = WWE_NOMEM;
167: goto bad;
168: }
169: w->ww_nvis -= w->ww_w.t;
170: nvis = m ? 0 : w->ww_w.nc;
171: for (i = w->ww_w.t; i < w->ww_w.b; i++)
172: w->ww_nvis[i] = nvis;
173:
174: w->ww_state = WWS_INITIAL;
175: w->ww_oflags = flags;
176: return wwindex[w->ww_index] = w;
177: bad:
178: if (w != 0) {
179: if (w->ww_win != 0)
180: wwfree(w->ww_win, w->ww_w.t);
181: if (w->ww_fmap != 0)
182: wwfree(w->ww_fmap, w->ww_w.t);
183: if (w->ww_buf != 0)
184: wwfree((char **)w->ww_buf, w->ww_b.t);
185: if (w->ww_nvis != 0)
186: free((char *)(w->ww_nvis + w->ww_w.t));
187: if (w->ww_ob != 0)
188: free(w->ww_ob);
189: if (w->ww_pty >= 0)
190: (void) close(w->ww_pty);
191: if (w->ww_socket >= 0)
192: (void) close(w->ww_socket);
193: free((char *)w);
194: }
195: return 0;
196: }
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