1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)ww.h 3.53 (Berkeley) 05/11/89 18 */ 19 20 #include <sgtty.h> 21 #include <setjmp.h> 22 #include <machine/endian.h> 23 24 #define NWW 30 /* maximum number of windows */ 25 26 /* a rectangle */ 27 struct ww_dim { 28 int nr; /* number of rows */ 29 int nc; /* number of columns */ 30 int t, b; /* top, bottom */ 31 int l, r; /* left, right */ 32 }; 33 34 /* a coordinate */ 35 struct ww_pos { 36 int r; /* row */ 37 int c; /* column */ 38 }; 39 40 /* the window structure */ 41 struct ww { 42 /* general flags and states */ 43 char ww_state; /* state of window */ 44 char ww_oflags; /* wwopen flags */ 45 46 /* information for overlap */ 47 struct ww *ww_forw; /* doubly linked list, for overlapping info */ 48 struct ww *ww_back; 49 char ww_index; /* the window index, for wwindex[] */ 50 char ww_order; /* the overlapping order */ 51 52 /* sizes and positions */ 53 struct ww_dim ww_w; /* window size and pos */ 54 struct ww_dim ww_b; /* buffer size and pos */ 55 struct ww_dim ww_i; /* the part inside the screen */ 56 struct ww_pos ww_cur; /* the cursor position, relative to ww_w */ 57 58 /* arrays */ 59 char **ww_win; /* the window */ 60 union ww_char **ww_buf; /* the buffer */ 61 char **ww_fmap; /* map for frame and box windows */ 62 short *ww_nvis; /* how many ww_buf chars are visible per row */ 63 64 /* information for wwwrite() and company */ 65 char ww_wstate; /* state for outputting characters */ 66 char ww_modes; /* current display modes */ 67 char ww_insert; /* insert mode */ 68 char ww_mapnl; /* map \n to \r\n */ 69 char ww_noupdate; /* don't do updates in wwwrite() */ 70 char ww_unctrl; /* expand control characters */ 71 char ww_nointr; /* wwwrite() not interruptable */ 72 char ww_hascursor; /* has fake cursor */ 73 74 /* things for the window process and io */ 75 char ww_ispty; /* ww_pty is really a pty, not socket pair */ 76 char ww_stopped; /* output stopped */ 77 int ww_pty; /* file descriptor of pty or socket pair */ 78 int ww_socket; /* other end of socket pair */ 79 int ww_pid; /* pid of process, if WWS_HASPROC true */ 80 char ww_ttyname[11]; /* "/dev/ttyp?" */ 81 char *ww_ob; /* output buffer */ 82 char *ww_obe; /* end of ww_ob */ 83 char *ww_obp; /* current read position in ww_ob */ 84 char *ww_obq; /* current write position in ww_ob */ 85 86 /* things for the user, they really don't belong here */ 87 char ww_id; /* the user window id */ 88 char ww_center; /* center the label */ 89 char ww_hasframe; /* frame it */ 90 char ww_keepopen; /* keep it open after the process dies */ 91 char *ww_label; /* the user supplied label */ 92 struct ww_dim ww_alt; /* alternate position and size */ 93 }; 94 95 /* state of a tty */ 96 struct ww_tty { 97 struct sgttyb ww_sgttyb; 98 struct tchars ww_tchars; 99 struct ltchars ww_ltchars; 100 int ww_lmode; 101 int ww_ldisc; 102 int ww_fflags; 103 }; 104 105 union ww_char { 106 short c_w; /* as a word */ 107 struct { 108 #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN 109 char C_c; /* the character part */ 110 char C_m; /* the mode part */ 111 #endif 112 #if BYTE_ORDER == BIG_ENDIAN 113 char C_m; /* the mode part */ 114 char C_c; /* the character part */ 115 #endif 116 } c_un; 117 }; 118 #define c_c c_un.C_c 119 #define c_m c_un.C_m 120 121 /* for display update */ 122 struct ww_update { 123 int best_gain; 124 int best_col; 125 int gain; 126 }; 127 128 /* parts of ww_char */ 129 #define WWC_CMASK 0x00ff 130 #define WWC_MMASK 0xff00 131 #define WWC_MSHIFT 8 132 133 /* c_m bits */ 134 #define WWM_REV 0x01 /* reverse video */ 135 #define WWM_BLK 0x02 /* blinking */ 136 #define WWM_UL 0x04 /* underlined */ 137 #define WWM_GRP 0x08 /* graphics */ 138 #define WWM_DIM 0x10 /* half intensity */ 139 #define WWM_USR 0x20 /* user specified mode */ 140 #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */ 141 142 /* ww_state values */ 143 #define WWS_INITIAL 0 /* just opened */ 144 #define WWS_HASPROC 1 /* has process on pty */ 145 #define WWS_DEAD 3 /* child died */ 146 147 /* flags for ww_fmap */ 148 #define WWF_U 0x01 149 #define WWF_R 0x02 150 #define WWF_D 0x04 151 #define WWF_L 0x08 152 #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L) 153 #define WWF_LABEL 0x40 154 #define WWF_TOP 0x80 155 156 /* flags to wwopen() */ 157 #define WWO_PTY 0x01 /* want pty */ 158 #define WWO_SOCKET 0x02 /* want socket pair */ 159 #define WWO_REVERSE 0x04 /* make it all reverse video */ 160 #define WWO_GLASS 0x08 /* make it all glass */ 161 #define WWO_FRAME 0x10 /* this is a frame window */ 162 163 /* special ww_index value */ 164 #define WWX_NOBODY NWW 165 166 /* error codes */ 167 #define WWE_NOERR 0 168 #define WWE_SYS 1 /* system error */ 169 #define WWE_NOMEM 2 /* out of memory */ 170 #define WWE_TOOMANY 3 /* too many windows */ 171 #define WWE_NOPTY 4 /* no more ptys */ 172 #define WWE_SIZE 5 /* bad window size */ 173 #define WWE_BADTERM 6 /* bad terminal type */ 174 #define WWE_CANTDO 7 /* dumb terminal */ 175 176 /* wwtouched[] bits, there used to be more than one */ 177 #define WWU_TOUCHED 0x01 /* touched */ 178 179 /* the window structures */ 180 struct ww wwhead; 181 struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */ 182 struct ww wwnobody; 183 184 /* tty things */ 185 struct ww_tty wwoldtty; /* the old (saved) terminal settings */ 186 struct ww_tty wwnewtty; /* the new (current) terminal settings */ 187 struct ww_tty wwwintty; /* the terminal settings for windows */ 188 char *wwterm; /* the terminal name */ 189 char wwtermcap[1024]; /* place for the termcap */ 190 191 /* generally useful variables */ 192 int wwnrow, wwncol; /* the screen size */ 193 char wwavailmodes; /* actually supported modes */ 194 char wwcursormodes; /* the modes for the fake cursor */ 195 char wwwrap; /* terminal has auto wrap around */ 196 int wwdtablesize; /* result of getdtablesize() call */ 197 char **wwsmap; /* the screen map */ 198 union ww_char **wwos; /* the old (current) screen */ 199 union ww_char **wwns; /* the new (desired) screen */ 200 char *wwtouched; /* wwns changed flags */ 201 struct ww_update *wwupd; /* for display update */ 202 extern int wwbaudmap[]; /* maps stty() baud rate code into number */ 203 int wwbaud; /* wwbaudmap[wwoldtty.ww_sgttyb.sg_ospeed] */ 204 int wwcursorrow, wwcursorcol; /* where we want the cursor to be */ 205 int wwerrno; /* error number */ 206 207 /* statistics */ 208 int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc; 209 int wwnwwr, wwnwwra, wwnwwrc; 210 int wwzc0, wwzc1, wwzcsave, wwzctotal; 211 int wwnupdate, wwnupdline, wwnupdmiss; 212 int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline; 213 int wwnread, wwnreade, wwnreadz, wwnreadc; 214 int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp; 215 int wwnselect, wwnselecte, wwnselectz; 216 217 /* quicky macros */ 218 #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c)) 219 #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c) 220 #define wwunbox(w) wwunframe(w) 221 #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0) 222 #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0) 223 #define wwupdate() wwupdate1(0, wwnrow); 224 225 /* things for handling input */ 226 int wwrint(); /* interrupt handler */ 227 struct ww *wwcurwin; /* window to copy input into */ 228 char *wwib; /* input (keyboard) buffer */ 229 char *wwibe; /* wwib + sizeof buffer */ 230 char *wwibp; /* current read position in buffer */ 231 char *wwibq; /* current write position in buffer */ 232 #define wwgetc() (wwibp < wwibq ? *wwibp++ & 0x7f : -1) 233 #define wwpeekc() (wwibp < wwibq ? *wwibp & 0x7f : -1) 234 #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1) 235 236 /* things for short circuiting wwiomux() */ 237 char wwintr; /* interrupting */ 238 char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */ 239 jmp_buf wwjmpbuf; /* jmpbuf for above */ 240 #define wwinterrupt() wwintr 241 #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \ 242 while (0) 243 #define wwclrintr() (wwintr = 0) 244 245 /* the window virtual terminal */ 246 #define WWT_TERM "window-v2" 247 #define WWT_TERMCAP "WW|window-v2|window program version 2:\ 248 :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\ 249 :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\ 250 :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:" 251 #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:" 252 #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:" 253 #define WWT_UL "ue=\\ErD:us=\\EsD:" 254 #define WWT_GRP "ae=\\ErH:as=\\EsH:" 255 #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:" 256 #define WWT_USR "XE=\\Er`:XS=\\Es`:" 257 #define WWT_ALDL "al=\\EL:dl=\\EM:" 258 #define WWT_IMEI "im=\\E@:ei=\\EO:mi:" 259 #define WWT_DC "dc=\\EN:" 260 char wwwintermcap[1024]; /* terminal-specific but window-independent 261 part of the window termcap */ 262 263 /* our functions */ 264 struct ww *wwopen(); 265 int wwchild(); 266 int wwsuspend(); 267 char **wwalloc(); 268 char *wwerror(); 269 270 /* c library functions */ 271 char *malloc(); 272 char *calloc(); 273 char *getenv(); 274 char *tgetstr(); 275 char *rindex(); 276 char *strcpy(); 277 char *strcat(); 278 279 #undef MIN 280 #undef MAX 281 #define MIN(x, y) ((x) > (y) ? (y) : (x)) 282 #define MAX(x, y) ((x) > (y) ? (x) : (y)) 283