| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)wwopen.c 3.23 %G%"; |
| 3 | #endif |
| 4 | |
| 5 | /* |
| 6 | * Copyright (c) 1983 Regents of the University of California, |
| 7 | * All rights reserved. Redistribution permitted subject to |
| 8 | * the terms of the Berkeley Software License Agreement. |
| 9 | */ |
| 10 | |
| 11 | #include "ww.h" |
| 12 | #include <sys/types.h> |
| 13 | #include <sys/socket.h> |
| 14 | |
| 15 | struct ww * |
| 16 | wwopen(flags, nrow, ncol, row, col, nline) |
| 17 | { |
| 18 | register struct ww *w; |
| 19 | register i, j; |
| 20 | char m; |
| 21 | short nvis; |
| 22 | |
| 23 | w = (struct ww *)calloc(sizeof (struct ww), 1); |
| 24 | if (w == 0) { |
| 25 | wwerrno = WWE_NOMEM; |
| 26 | goto bad; |
| 27 | } |
| 28 | w->ww_pty = -1; |
| 29 | w->ww_socket = -1; |
| 30 | |
| 31 | for (i = 0; i < NWW && wwindex[i] != 0; i++) |
| 32 | ; |
| 33 | if (i >= NWW) { |
| 34 | wwerrno = WWE_TOOMANY; |
| 35 | goto bad; |
| 36 | } |
| 37 | w->ww_index = i; |
| 38 | |
| 39 | if (nline < nrow) |
| 40 | nline = nrow; |
| 41 | |
| 42 | w->ww_w.t = row; |
| 43 | w->ww_w.b = row + nrow; |
| 44 | w->ww_w.l = col; |
| 45 | w->ww_w.r = col + ncol; |
| 46 | w->ww_w.nr = nrow; |
| 47 | w->ww_w.nc = ncol; |
| 48 | |
| 49 | w->ww_b.t = row; |
| 50 | w->ww_b.b = row + nline; |
| 51 | w->ww_b.l = col; |
| 52 | w->ww_b.r = col + ncol; |
| 53 | w->ww_b.nr = nline; |
| 54 | w->ww_b.nc = ncol; |
| 55 | |
| 56 | w->ww_i.t = MAX(w->ww_w.t, 0); |
| 57 | w->ww_i.b = MIN(w->ww_w.b, wwnrow); |
| 58 | w->ww_i.l = MAX(w->ww_w.l, 0); |
| 59 | w->ww_i.r = MIN(w->ww_w.r, wwncol); |
| 60 | w->ww_i.nr = w->ww_i.b - w->ww_i.t; |
| 61 | w->ww_i.nc = w->ww_i.r - w->ww_i.l; |
| 62 | |
| 63 | w->ww_cur.r = w->ww_w.t; |
| 64 | w->ww_cur.c = w->ww_w.l; |
| 65 | |
| 66 | if (flags & WWO_PTY) { |
| 67 | struct winsize winsize; |
| 68 | |
| 69 | if (wwgetpty(w) < 0) |
| 70 | goto bad; |
| 71 | if (wwsettty(w->ww_pty, &wwwintty, (struct ww_tty *)0) < 0) |
| 72 | goto bad; |
| 73 | winsize.ws_row = nrow; |
| 74 | winsize.ws_col = ncol; |
| 75 | winsize.ws_xpixel = winsize.ws_ypixel = 0; |
| 76 | if (ioctl(w->ww_pty, TIOCSWINSZ, (char *)&winsize) < 0) { |
| 77 | wwerrno = WWE_SYS; |
| 78 | goto bad; |
| 79 | } |
| 80 | w->ww_ispty = 1; |
| 81 | } else if (flags & WWO_SOCKET) { |
| 82 | int d[2]; |
| 83 | if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) { |
| 84 | wwerrno = WWE_SYS; |
| 85 | goto bad; |
| 86 | } |
| 87 | w->ww_pty = d[0]; |
| 88 | w->ww_socket = d[1]; |
| 89 | } |
| 90 | if (flags & (WWO_PTY|WWO_SOCKET)) { |
| 91 | if ((w->ww_ob = malloc(512)) == 0) { |
| 92 | wwerrno = WWE_NOMEM; |
| 93 | goto bad; |
| 94 | } |
| 95 | w->ww_obe = w->ww_ob + 512; |
| 96 | w->ww_obp = w->ww_obq = w->ww_ob; |
| 97 | } |
| 98 | |
| 99 | w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l, |
| 100 | w->ww_w.nr, w->ww_w.nc, sizeof (char)); |
| 101 | if (w->ww_win == 0) |
| 102 | goto bad; |
| 103 | m = 0; |
| 104 | if (flags & WWO_GLASS) |
| 105 | m |= WWM_GLS; |
| 106 | if (flags & WWO_REVERSE) |
| 107 | if (wwavailmodes & WWM_REV) |
| 108 | m |= WWM_REV; |
| 109 | else |
| 110 | flags &= ~WWO_REVERSE; |
| 111 | for (i = w->ww_w.t; i < w->ww_w.b; i++) |
| 112 | for (j = w->ww_w.l; j < w->ww_w.r; j++) |
| 113 | w->ww_win[i][j] = m; |
| 114 | |
| 115 | if (flags & WWO_FRAME) { |
| 116 | w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l, |
| 117 | w->ww_w.nr, w->ww_w.nc, sizeof (char)); |
| 118 | if (w->ww_fmap == 0) |
| 119 | goto bad; |
| 120 | for (i = w->ww_w.t; i < w->ww_w.b; i++) |
| 121 | for (j = w->ww_w.l; j < w->ww_w.r; j++) |
| 122 | w->ww_fmap[i][j] = 0; |
| 123 | } |
| 124 | |
| 125 | w->ww_buf = (union ww_char **) |
| 126 | wwalloc(w->ww_b.t, w->ww_b.l, |
| 127 | w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char)); |
| 128 | if (w->ww_buf == 0) |
| 129 | goto bad; |
| 130 | for (i = w->ww_b.t; i < w->ww_b.b; i++) |
| 131 | for (j = w->ww_b.l; j < w->ww_b.r; j++) |
| 132 | w->ww_buf[i][j].c_w = ' '; |
| 133 | |
| 134 | w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short)); |
| 135 | if (w->ww_nvis == 0) { |
| 136 | wwerrno = WWE_NOMEM; |
| 137 | goto bad; |
| 138 | } |
| 139 | w->ww_nvis -= w->ww_w.t; |
| 140 | nvis = m ? 0 : w->ww_w.nc; |
| 141 | for (i = w->ww_w.t; i < w->ww_w.b; i++) |
| 142 | w->ww_nvis[i] = nvis; |
| 143 | |
| 144 | w->ww_state = WWS_INITIAL; |
| 145 | w->ww_oflags = flags; |
| 146 | return wwindex[w->ww_index] = w; |
| 147 | bad: |
| 148 | if (w != 0) { |
| 149 | if (w->ww_win != 0) |
| 150 | wwfree(w->ww_win, w->ww_w.t); |
| 151 | if (w->ww_fmap != 0) |
| 152 | wwfree(w->ww_fmap, w->ww_w.t); |
| 153 | if (w->ww_buf != 0) |
| 154 | wwfree((char **)w->ww_buf, w->ww_b.t); |
| 155 | if (w->ww_nvis != 0) |
| 156 | free((char *)(w->ww_nvis + w->ww_w.t)); |
| 157 | if (w->ww_ob != 0) |
| 158 | free(w->ww_ob); |
| 159 | if (w->ww_pty >= 0) |
| 160 | (void) close(w->ww_pty); |
| 161 | if (w->ww_socket >= 0) |
| 162 | (void) close(w->ww_socket); |
| 163 | free((char *)w); |
| 164 | } |
| 165 | return 0; |
| 166 | } |