1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Edward Wang at The University of California, Berkeley. 7 * 8 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)wwopen.c 8.2 (Berkeley) 04/28/95"; 13 #endif /* not lint */ 14 15 #include "ww.h" 16 #include <sys/types.h> 17 #include <sys/socket.h> 18 #include <fcntl.h> 19 20 struct ww * 21 wwopen(flags, nrow, ncol, row, col, nline) 22 { 23 register struct ww *w; 24 register i, j; 25 char m; 26 short nvis; 27 28 w = (struct ww *)calloc(sizeof (struct ww), 1); 29 if (w == 0) { 30 wwerrno = WWE_NOMEM; 31 goto bad; 32 } 33 w->ww_pty = -1; 34 w->ww_socket = -1; 35 36 for (i = 0; i < NWW && wwindex[i] != 0; i++) 37 ; 38 if (i >= NWW) { 39 wwerrno = WWE_TOOMANY; 40 goto bad; 41 } 42 w->ww_index = i; 43 44 if (nline < nrow) 45 nline = nrow; 46 47 w->ww_w.t = row; 48 w->ww_w.b = row + nrow; 49 w->ww_w.l = col; 50 w->ww_w.r = col + ncol; 51 w->ww_w.nr = nrow; 52 w->ww_w.nc = ncol; 53 54 w->ww_b.t = row; 55 w->ww_b.b = row + nline; 56 w->ww_b.l = col; 57 w->ww_b.r = col + ncol; 58 w->ww_b.nr = nline; 59 w->ww_b.nc = ncol; 60 61 w->ww_i.t = MAX(w->ww_w.t, 0); 62 w->ww_i.b = MIN(w->ww_w.b, wwnrow); 63 w->ww_i.l = MAX(w->ww_w.l, 0); 64 w->ww_i.r = MIN(w->ww_w.r, wwncol); 65 w->ww_i.nr = w->ww_i.b - w->ww_i.t; 66 w->ww_i.nc = w->ww_i.r - w->ww_i.l; 67 68 w->ww_cur.r = w->ww_w.t; 69 w->ww_cur.c = w->ww_w.l; 70 71 if (flags & WWO_PTY) { 72 if (wwgetpty(w) < 0) 73 goto bad; 74 w->ww_ispty = 1; 75 } else if (flags & WWO_SOCKET) { 76 int d[2]; 77 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) { 78 wwerrno = WWE_SYS; 79 goto bad; 80 } 81 (void) fcntl(d[0], F_SETFD, 1); 82 (void) fcntl(d[1], F_SETFD, 1); 83 w->ww_pty = d[0]; 84 w->ww_socket = d[1]; 85 } 86 if (flags & (WWO_PTY|WWO_SOCKET)) { 87 if ((w->ww_ob = malloc(512)) == 0) { 88 wwerrno = WWE_NOMEM; 89 goto bad; 90 } 91 w->ww_obe = w->ww_ob + 512; 92 w->ww_obp = w->ww_obq = w->ww_ob; 93 if (w->ww_pty >= wwdtablesize) 94 wwdtablesize = w->ww_pty + 1; 95 } 96 97 w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l, 98 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 99 if (w->ww_win == 0) 100 goto bad; 101 m = 0; 102 if (flags & WWO_GLASS) 103 m |= WWM_GLS; 104 if (flags & WWO_REVERSE) 105 if (wwavailmodes & WWM_REV) 106 m |= WWM_REV; 107 else 108 flags &= ~WWO_REVERSE; 109 for (i = w->ww_w.t; i < w->ww_w.b; i++) 110 for (j = w->ww_w.l; j < w->ww_w.r; j++) 111 w->ww_win[i][j] = m; 112 113 if (flags & WWO_FRAME) { 114 w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l, 115 w->ww_w.nr, w->ww_w.nc, sizeof (char)); 116 if (w->ww_fmap == 0) 117 goto bad; 118 for (i = w->ww_w.t; i < w->ww_w.b; i++) 119 for (j = w->ww_w.l; j < w->ww_w.r; j++) 120 w->ww_fmap[i][j] = 0; 121 } 122 123 w->ww_buf = (union ww_char **) 124 wwalloc(w->ww_b.t, w->ww_b.l, 125 w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char)); 126 if (w->ww_buf == 0) 127 goto bad; 128 for (i = w->ww_b.t; i < w->ww_b.b; i++) 129 for (j = w->ww_b.l; j < w->ww_b.r; j++) 130 w->ww_buf[i][j].c_w = ' '; 131 132 w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short)); 133 if (w->ww_nvis == 0) { 134 wwerrno = WWE_NOMEM; 135 goto bad; 136 } 137 w->ww_nvis -= w->ww_w.t; 138 nvis = m ? 0 : w->ww_w.nc; 139 for (i = w->ww_w.t; i < w->ww_w.b; i++) 140 w->ww_nvis[i] = nvis; 141 142 w->ww_state = WWS_INITIAL; 143 w->ww_oflags = flags; 144 return wwindex[w->ww_index] = w; 145 bad: 146 if (w != 0) { 147 if (w->ww_win != 0) 148 wwfree(w->ww_win, w->ww_w.t); 149 if (w->ww_fmap != 0) 150 wwfree(w->ww_fmap, w->ww_w.t); 151 if (w->ww_buf != 0) 152 wwfree((char **)w->ww_buf, w->ww_b.t); 153 if (w->ww_nvis != 0) 154 free((char *)(w->ww_nvis + w->ww_w.t)); 155 if (w->ww_ob != 0) 156 free(w->ww_ob); 157 if (w->ww_pty >= 0) 158 (void) close(w->ww_pty); 159 if (w->ww_socket >= 0) 160 (void) close(w->ww_socket); 161 free((char *)w); 162 } 163 return 0; 164 } 165