#ifndef lint static char sccsid[] = "@(#)wwopen.c 3.21 4/24/85"; #endif /* * Copyright (c) 1983 Regents of the University of California, * All rights reserved. Redistribution permitted subject to * the terms of the Berkeley Software License Agreement. */ #include "ww.h" #include #include 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) { struct winsize winsize; if (wwgetpty(w) < 0) goto bad; if (wwsettty(w->ww_pty, &wwwintty, (struct ww_tty *)0) < 0) goto bad; winsize.ws_row = nrow; winsize.ws_col = ncol; winsize.ws_xpixel = winsize.ws_ypixel = 0; if (ioctl(w->ww_pty, (int)TIOCSWINSZ, (char *)&winsize) < 0) { wwerrno = WWE_SYS; 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; } 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) m |= WWM_REV; 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; }