diff options
Diffstat (limited to 'usr.bin/window/wwopen.c')
| -rw-r--r-- | usr.bin/window/wwopen.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/usr.bin/window/wwopen.c b/usr.bin/window/wwopen.c new file mode 100644 index 0000000..c4fc96b --- /dev/null +++ b/usr.bin/window/wwopen.c @@ -0,0 +1,188 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Edward Wang at The University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)wwopen.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "ww.h" +#include <sys/types.h> +#include <sys/socket.h> +#include <fcntl.h> + +struct ww * +wwopen(flags, nrow, ncol, row, col, nline) +{ + register struct ww *w; + register i, j; + char m; + short nvis; + + w = (struct ww *)calloc(sizeof (struct ww), 1); + if (w == 0) { + wwerrno = WWE_NOMEM; + goto bad; + } + w->ww_pty = -1; + w->ww_socket = -1; + + for (i = 0; i < NWW && wwindex[i] != 0; i++) + ; + if (i >= NWW) { + wwerrno = WWE_TOOMANY; + goto bad; + } + w->ww_index = i; + + if (nline < nrow) + nline = nrow; + + w->ww_w.t = row; + w->ww_w.b = row + nrow; + w->ww_w.l = col; + w->ww_w.r = col + ncol; + w->ww_w.nr = nrow; + w->ww_w.nc = ncol; + + w->ww_b.t = row; + w->ww_b.b = row + nline; + w->ww_b.l = col; + w->ww_b.r = col + ncol; + w->ww_b.nr = nline; + w->ww_b.nc = ncol; + + w->ww_i.t = MAX(w->ww_w.t, 0); + w->ww_i.b = MIN(w->ww_w.b, wwnrow); + w->ww_i.l = MAX(w->ww_w.l, 0); + w->ww_i.r = MIN(w->ww_w.r, wwncol); + w->ww_i.nr = w->ww_i.b - w->ww_i.t; + w->ww_i.nc = w->ww_i.r - w->ww_i.l; + + w->ww_cur.r = w->ww_w.t; + w->ww_cur.c = w->ww_w.l; + + if (flags & WWO_PTY) { + if (wwgetpty(w) < 0) + goto bad; + w->ww_ispty = 1; + } else if (flags & WWO_SOCKET) { + int d[2]; + if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) { + wwerrno = WWE_SYS; + goto bad; + } + (void) fcntl(d[0], F_SETFD, 1); + (void) fcntl(d[1], F_SETFD, 1); + w->ww_pty = d[0]; + w->ww_socket = d[1]; + } + if (flags & (WWO_PTY|WWO_SOCKET)) { + if ((w->ww_ob = malloc(512)) == 0) { + wwerrno = WWE_NOMEM; + goto bad; + } + w->ww_obe = w->ww_ob + 512; + w->ww_obp = w->ww_obq = w->ww_ob; + } + + w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l, + w->ww_w.nr, w->ww_w.nc, sizeof (char)); + if (w->ww_win == 0) + goto bad; + m = 0; + if (flags & WWO_GLASS) + m |= WWM_GLS; + if (flags & WWO_REVERSE) + if (wwavailmodes & WWM_REV) + m |= WWM_REV; + else + flags &= ~WWO_REVERSE; + for (i = w->ww_w.t; i < w->ww_w.b; i++) + for (j = w->ww_w.l; j < w->ww_w.r; j++) + w->ww_win[i][j] = m; + + if (flags & WWO_FRAME) { + w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l, + w->ww_w.nr, w->ww_w.nc, sizeof (char)); + if (w->ww_fmap == 0) + goto bad; + for (i = w->ww_w.t; i < w->ww_w.b; i++) + for (j = w->ww_w.l; j < w->ww_w.r; j++) + w->ww_fmap[i][j] = 0; + } + + w->ww_buf = (union ww_char **) + wwalloc(w->ww_b.t, w->ww_b.l, + w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char)); + if (w->ww_buf == 0) + goto bad; + for (i = w->ww_b.t; i < w->ww_b.b; i++) + for (j = w->ww_b.l; j < w->ww_b.r; j++) + w->ww_buf[i][j].c_w = ' '; + + w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short)); + if (w->ww_nvis == 0) { + wwerrno = WWE_NOMEM; + goto bad; + } + w->ww_nvis -= w->ww_w.t; + nvis = m ? 0 : w->ww_w.nc; + for (i = w->ww_w.t; i < w->ww_w.b; i++) + w->ww_nvis[i] = nvis; + + w->ww_state = WWS_INITIAL; + w->ww_oflags = flags; + return wwindex[w->ww_index] = w; +bad: + if (w != 0) { + if (w->ww_win != 0) + wwfree(w->ww_win, w->ww_w.t); + if (w->ww_fmap != 0) + wwfree(w->ww_fmap, w->ww_w.t); + if (w->ww_buf != 0) + wwfree((char **)w->ww_buf, w->ww_b.t); + if (w->ww_nvis != 0) + free((char *)(w->ww_nvis + w->ww_w.t)); + if (w->ww_ob != 0) + free(w->ww_ob); + if (w->ww_pty >= 0) + (void) close(w->ww_pty); + if (w->ww_socket >= 0) + (void) close(w->ww_socket); + free((char *)w); + } + return 0; +} |
