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 * @(#)ww.h 8.1 (Berkeley) 06/06/93 11 */ 12 13 #ifdef OLD_TTY 14 #include <sgtty.h> 15 #else 16 #include <termios.h> 17 #endif 18 #include <setjmp.h> 19 #include <machine/endian.h> 20 21 #define NWW 30 /* maximum number of windows */ 22 23 /* a rectangle */ 24 struct ww_dim { 25 int nr; /* number of rows */ 26 int nc; /* number of columns */ 27 int t, b; /* top, bottom */ 28 int l, r; /* left, right */ 29 }; 30 31 /* a coordinate */ 32 struct ww_pos { 33 int r; /* row */ 34 int c; /* column */ 35 }; 36 37 /* the window structure */ 38 struct ww { 39 /* general flags and states */ 40 char ww_state; /* state of window */ 41 char ww_oflags; /* wwopen flags */ 42 43 /* information for overlap */ 44 struct ww *ww_forw; /* doubly linked list, for overlapping info */ 45 struct ww *ww_back; 46 char ww_index; /* the window index, for wwindex[] */ 47 char ww_order; /* the overlapping order */ 48 49 /* sizes and positions */ 50 struct ww_dim ww_w; /* window size and pos */ 51 struct ww_dim ww_b; /* buffer size and pos */ 52 struct ww_dim ww_i; /* the part inside the screen */ 53 struct ww_pos ww_cur; /* the cursor position, relative to ww_w */ 54 55 /* arrays */ 56 char **ww_win; /* the window */ 57 union ww_char **ww_buf; /* the buffer */ 58 char **ww_fmap; /* map for frame and box windows */ 59 short *ww_nvis; /* how many ww_buf chars are visible per row */ 60 61 /* information for wwwrite() and company */ 62 char ww_wstate; /* state for outputting characters */ 63 char ww_modes; /* current display modes */ 64 char ww_insert; /* insert mode */ 65 char ww_mapnl; /* map \n to \r\n */ 66 char ww_noupdate; /* don't do updates in wwwrite() */ 67 char ww_unctrl; /* expand control characters */ 68 char ww_nointr; /* wwwrite() not interruptable */ 69 char ww_hascursor; /* has fake cursor */ 70 71 /* things for the window process and io */ 72 char ww_ispty; /* ww_pty is really a pty, not socket pair */ 73 char ww_stopped; /* output stopped */ 74 int ww_pty; /* file descriptor of pty or socket pair */ 75 int ww_socket; /* other end of socket pair */ 76 int ww_pid; /* pid of process, if WWS_HASPROC true */ 77 char ww_ttyname[11]; /* "/dev/ttyp?" */ 78 char *ww_ob; /* output buffer */ 79 char *ww_obe; /* end of ww_ob */ 80 char *ww_obp; /* current read position in ww_ob */ 81 char *ww_obq; /* current write position in ww_ob */ 82 83 /* things for the user, they really don't belong here */ 84 char ww_id; /* the user window id */ 85 char ww_center; /* center the label */ 86 char ww_hasframe; /* frame it */ 87 char ww_keepopen; /* keep it open after the process dies */ 88 char *ww_label; /* the user supplied label */ 89 struct ww_dim ww_alt; /* alternate position and size */ 90 }; 91 92 /* state of a tty */ 93 struct ww_tty { 94 #ifdef OLD_TTY 95 struct sgttyb ww_sgttyb; 96 struct tchars ww_tchars; 97 struct ltchars ww_ltchars; 98 int ww_lmode; 99 int ww_ldisc; 100 #else 101 struct termios ww_termios; 102 #endif 103 int ww_fflags; 104 }; 105 106 union ww_char { 107 short c_w; /* as a word */ 108 struct { 109 #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN 110 char C_c; /* the character part */ 111 char C_m; /* the mode part */ 112 #endif 113 #if BYTE_ORDER == BIG_ENDIAN 114 char C_m; /* the mode part */ 115 char C_c; /* the character part */ 116 #endif 117 } c_un; 118 }; 119 #define c_c c_un.C_c 120 #define c_m c_un.C_m 121 122 /* for display update */ 123 struct ww_update { 124 int best_gain; 125 int best_col; 126 int gain; 127 }; 128 129 /* parts of ww_char */ 130 #define WWC_CMASK 0x00ff 131 #define WWC_MMASK 0xff00 132 #define WWC_MSHIFT 8 133 134 /* c_m bits */ 135 #define WWM_REV 0x01 /* reverse video */ 136 #define WWM_BLK 0x02 /* blinking */ 137 #define WWM_UL 0x04 /* underlined */ 138 #define WWM_GRP 0x08 /* graphics */ 139 #define WWM_DIM 0x10 /* half intensity */ 140 #define WWM_USR 0x20 /* user specified mode */ 141 #define WWM_GLS 0x40 /* window only, glass, i.e., transparent */ 142 143 /* ww_state values */ 144 #define WWS_INITIAL 0 /* just opened */ 145 #define WWS_HASPROC 1 /* has process on pty */ 146 #define WWS_DEAD 3 /* child died */ 147 148 /* flags for ww_fmap */ 149 #define WWF_U 0x01 150 #define WWF_R 0x02 151 #define WWF_D 0x04 152 #define WWF_L 0x08 153 #define WWF_MASK (WWF_U|WWF_R|WWF_D|WWF_L) 154 #define WWF_LABEL 0x40 155 #define WWF_TOP 0x80 156 157 /* flags to wwopen() */ 158 #define WWO_PTY 0x01 /* want pty */ 159 #define WWO_SOCKET 0x02 /* want socket pair */ 160 #define WWO_REVERSE 0x04 /* make it all reverse video */ 161 #define WWO_GLASS 0x08 /* make it all glass */ 162 #define WWO_FRAME 0x10 /* this is a frame window */ 163 164 /* special ww_index value */ 165 #define WWX_NOBODY NWW 166 167 /* error codes */ 168 #define WWE_NOERR 0 169 #define WWE_SYS 1 /* system error */ 170 #define WWE_NOMEM 2 /* out of memory */ 171 #define WWE_TOOMANY 3 /* too many windows */ 172 #define WWE_NOPTY 4 /* no more ptys */ 173 #define WWE_SIZE 5 /* bad window size */ 174 #define WWE_BADTERM 6 /* bad terminal type */ 175 #define WWE_CANTDO 7 /* dumb terminal */ 176 177 /* wwtouched[] bits, there used to be more than one */ 178 #define WWU_TOUCHED 0x01 /* touched */ 179 180 /* the window structures */ 181 struct ww wwhead; 182 struct ww *wwindex[NWW + 1]; /* last location is for wwnobody */ 183 struct ww wwnobody; 184 185 /* tty things */ 186 struct ww_tty wwoldtty; /* the old (saved) terminal settings */ 187 struct ww_tty wwnewtty; /* the new (current) terminal settings */ 188 struct ww_tty wwwintty; /* the terminal settings for windows */ 189 char *wwterm; /* the terminal name */ 190 char wwtermcap[1024]; /* place for the termcap */ 191 192 /* generally useful variables */ 193 int wwnrow, wwncol; /* the screen size */ 194 char wwavailmodes; /* actually supported modes */ 195 char wwcursormodes; /* the modes for the fake cursor */ 196 char wwwrap; /* terminal has auto wrap around */ 197 int wwdtablesize; /* result of getdtablesize() call */ 198 char **wwsmap; /* the screen map */ 199 union ww_char **wwos; /* the old (current) screen */ 200 union ww_char **wwns; /* the new (desired) screen */ 201 union ww_char **wwcs; /* the checkpointed screen */ 202 char *wwtouched; /* wwns changed flags */ 203 struct ww_update *wwupd; /* for display update */ 204 int wwospeed; /* output baud rate, copied from wwoldtty */ 205 int wwbaud; /* wwospeed converted into actual number */ 206 int wwcursorrow, wwcursorcol; /* where we want the cursor to be */ 207 int wwerrno; /* error number */ 208 209 /* statistics */ 210 int wwnflush, wwnwr, wwnwre, wwnwrz, wwnwrc; 211 int wwnwwr, wwnwwra, wwnwwrc; 212 int wwntokdef, wwntokuse, wwntokbad, wwntoksave, wwntokc; 213 int wwnupdate, wwnupdline, wwnupdmiss; 214 int wwnupdscan, wwnupdclreol, wwnupdclreos, wwnupdclreosmiss, wwnupdclreosline; 215 int wwnread, wwnreade, wwnreadz; 216 int wwnreadc, wwnreadack, wwnreadnack, wwnreadstat, wwnreadec; 217 int wwnwread, wwnwreade, wwnwreadz, wwnwreadd, wwnwreadc, wwnwreadp; 218 int wwnselect, wwnselecte, wwnselectz; 219 220 /* quicky macros */ 221 #define wwsetcursor(r,c) (wwcursorrow = (r), wwcursorcol = (c)) 222 #define wwcurtowin(w) wwsetcursor((w)->ww_cur.r, (w)->ww_cur.c) 223 #define wwunbox(w) wwunframe(w) 224 #define wwclreol(w,r,c) wwclreol1((w), (r), (c), 0) 225 #define wwredrawwin(w) wwredrawwin1((w), (w)->ww_i.t, (w)->ww_i.b, 0) 226 #define wwupdate() wwupdate1(0, wwnrow); 227 228 /* things for handling input */ 229 void wwrint(); /* interrupt handler */ 230 struct ww *wwcurwin; /* window to copy input into */ 231 char *wwib; /* input (keyboard) buffer */ 232 char *wwibe; /* wwib + sizeof buffer */ 233 char *wwibp; /* current read position in buffer */ 234 char *wwibq; /* current write position in buffer */ 235 #define wwmaskc(c) ((c) & 0x7f) 236 #define wwgetc() (wwibp < wwibq ? wwmaskc(*wwibp++) : -1) 237 #define wwpeekc() (wwibp < wwibq ? wwmaskc(*wwibp) : -1) 238 #define wwungetc(c) (wwibp > wwib ? *--wwibp = (c) : -1) 239 240 /* things for short circuiting wwiomux() */ 241 char wwintr; /* interrupting */ 242 char wwsetjmp; /* want a longjmp() from wwrint() and wwchild() */ 243 jmp_buf wwjmpbuf; /* jmpbuf for above */ 244 #define wwinterrupt() wwintr 245 #define wwsetintr() do { wwintr = 1; if (wwsetjmp) longjmp(wwjmpbuf, 1); } \ 246 while (0) 247 #define wwclrintr() (wwintr = 0) 248 249 /* checkpointing */ 250 int wwdocheckpoint; 251 252 /* the window virtual terminal */ 253 #define WWT_TERM "window-v2" 254 #define WWT_TERMCAP "WW|window-v2|window program version 2:\ 255 :am:bs:da:db:ms:pt:cr=^M:nl=^J:bl=^G:ta=^I:\ 256 :cm=\\EY%+ %+ :le=^H:nd=\\EC:up=\\EA:do=\\EB:ho=\\EH:\ 257 :cd=\\EJ:ce=\\EK:cl=\\EE:me=\\Er^?:" 258 #define WWT_REV "se=\\ErA:so=\\EsA:mr=\\EsA:" 259 #define WWT_BLK "BE=\\ErB:BS=\\EsB:mb=\\EsB:" 260 #define WWT_UL "ue=\\ErD:us=\\EsD:" 261 #define WWT_GRP "ae=\\ErH:as=\\EsH:" 262 #define WWT_DIM "HE=\\ErP:HS=\\EsP:mh=\\EsP:" 263 #define WWT_USR "XE=\\Er`:XS=\\Es`:" 264 #define WWT_ALDL "al=\\EL:dl=\\EM:" 265 #define WWT_IMEI "im=\\E@:ei=\\EO:ic=:mi:" /* XXX, ic for emacs bug */ 266 #define WWT_IC "ic=\\EP:" 267 #define WWT_DC "dc=\\EN:" 268 char wwwintermcap[1024]; /* terminal-specific but window-independent 269 part of the window termcap */ 270 #ifdef TERMINFO 271 /* where to put the temporary terminfo directory */ 272 char wwterminfopath[1024]; 273 #endif 274 275 /* our functions */ 276 struct ww *wwopen(); 277 void wwchild(); 278 void wwalarm(); 279 void wwquit(); 280 char **wwalloc(); 281 char *wwerror(); 282 283 /* c library functions */ 284 char *malloc(); 285 char *calloc(); 286 char *getenv(); 287 char *tgetstr(); 288 char *rindex(); 289 char *strcpy(); 290 char *strcat(); 291 292 #undef MIN 293 #undef MAX 294 #define MIN(x, y) ((x) > (y) ? (y) : (x)) 295 #define MAX(x, y) ((x) > (y) ? (x) : (y)) 296