usr/src/cmd/vi/port/ex_tty.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 /* Copyright (c) 1981 Regents of the University of California */
  32
  33 #pragma ident   "%Z%%M% %I%     %E% SMI"
  34
  35 #include "ex.h"
  36 #include "ex_tty.h"
  37
  38 static unsigned char allocspace[256];
  39 static unsigned char *freespace;
  40
  41 /*
  42  * Terminal type initialization routines,
  43  * and calculation of flags at entry or after
  44  * a shell escape which may change them.
  45  */
  46 static short GT;
  47
  48 void
  49 gettmode(void)
  50 {
  51         short speed;
  52
  53         GT = 1;
  54         if(gTTY(2) == -1)
  55                 return;
  56         if (termiosflag)
  57                 speed = (short)cfgetospeed(&tty);
  58         else
  59                 speed = tty.c_cflag & CBAUD;
  60         if (ospeed != speed)
  61                 value(vi_SLOWOPEN) = (int)(speed) < B1200;
  62         ospeed = speed;
  63         normf = tty;
  64         UPPERCASE = (tty.c_iflag & IUCLC) != 0;
  65         if ((tty.c_oflag & TABDLY) == TAB3 || teleray_glitch)
  66                 GT = 0;
  67         NONL = (tty.c_oflag & ONLCR) == 0;
  68 }
  69
  70 void
  71 setterm(unsigned char *type)
  72 {
  73         char *tparm();
  74         unsigned char *chrptr;
  75         int unknown, i;
  76         int l;
  77         int errret;
  78         extern unsigned char termtype[];
  79         extern void setsize();
  80
  81         unknown = 0;
  82         if (cur_term && exit_ca_mode)
  83                 putpad((unsigned char *)exit_ca_mode);
  84         /*
  85          * The code in this if statement is from 4.1.2 and fixes a bug where
  86          * you couldn't change the term type using the ":set term" command.
  87          */
  88         if (*termtype) {
  89 #ifdef TRACE
  90                 if (trace) fprintf(trace, "CALLED del_curterm with %s\n", termtype);
  91 #endif
  92                 del_curterm(cur_term); /* Zap the old data space which was allocated
  93                                         * previously (this is a set command)
  94                                         */
  95         }
  96         cur_term = 0;
  97         strcpy(termtype, type);
  98
  99 #ifdef XPG4
 100         use_env(1);             /* $LINES and $COLUMNS override terminfo */
 101 #endif /* XPG4 */
 102
 103         setupterm(type, 2, &errret);
 104         if (errret != 1) {
 105                 unknown++;
 106                 cur_term = 0;
 107                 if (errret == 0) {
 108                         setupterm("unknown", 1, &errret);
 109                         if (errret == 0) {
 110                           perror(gettext("Unable to setup term:'unknown' missing in the terminfo database"));
 111                           exit(++errcnt);
 112                         }
 113                 }
 114                 else if (errret == -1) {
 115                         perror(gettext("Unable to find the terminfo database"));
 116                         exit(++errcnt);
 117                 }
 118         }
 119         if (errret == 1)
 120                 resetterm();
 121 #ifdef TRACE
 122         if (trace) fprintf(trace, "after setupterm, lines %d, columns %d, clear_screen '%s', cursor_address '%s'\n", lines, columns, clear_screen, cursor_address);
 123 #endif
 124         setsize();
 125 #ifdef OLD
 126         if(exit_attribute_mode)
 127                 putpad(exit_attribute_mode);
 128 #endif
 129         exit_bold = (exit_standout_mode ? exit_standout_mode : (exit_attribute_mode ? exit_attribute_mode : 0));
 130         i = lines;
 131         if (lines <= 1)
 132                 lines = 24;
 133         if (lines > TUBELINES)
 134                 lines = TUBELINES;
 135         l = lines;
 136         if (ospeed < B1200)
 137                 l = 9;  /* including the message line at the bottom */
 138         else if (ospeed < B2400)
 139                 l = 17;
 140         if (l > lines)
 141                 l = lines;
 142         /*
 143          * Initialize keypad arrow keys.
 144          */
 145         freespace = allocspace;
 146
 147 #ifdef sun
 148         kpadd(arrows, (unsigned char *)key_ic, (unsigned char *)"i",
 149             (unsigned char *)"inschar");
 150         kpadd(arrows, (unsigned char *)key_eic, (unsigned char *)"i",
 151             (unsigned char *)"inschar");
 152         kpadd(arrows, (unsigned char *)key_up, (unsigned char *)"k",
 153             (unsigned char *)"up");
 154         kpadd(arrows, (unsigned char *)key_down, (unsigned char *)"j",
 155             (unsigned char *)"down");
 156         kpadd(arrows, (unsigned char *)key_left, (unsigned char *)"h",
 157             (unsigned char *)"left");
 158         kpadd(arrows, (unsigned char *)key_right, (unsigned char *)"l",
 159             (unsigned char *)"right");
 160         kpadd(arrows, (unsigned char *)key_home, (unsigned char *)"H",
 161             (unsigned char *)"home");
 162 #else
 163         kpadd(arrows, key_ic, "i", "inschar");
 164         kpadd(immacs, key_ic, "\033", "inschar");
 165         kpadd(arrows, key_eic, "i", "inschar");
 166         kpadd(immacs, key_eic, "\033", "inschar");
 167
 168         kpboth(arrows, immacs, key_up, "k", "up");
 169         kpboth(arrows, immacs, key_down, "j", "down");
 170         kpboth(arrows, immacs, key_left, "h", "left");
 171         kpboth(arrows, immacs, key_right, "l", "right");
 172         kpboth(arrows, immacs, key_home, "H", "home");
 173         kpboth(arrows, immacs, key_il, "o\033", "insline");
 174         kpboth(arrows, immacs, key_dl, "dd", "delline");
 175         kpboth(arrows, immacs, key_clear, "\014", "clear");
 176         kpboth(arrows, immacs, key_eol, "d$", "clreol");
 177         kpboth(arrows, immacs, key_sf, "\005", "scrollf");
 178         kpboth(arrows, immacs, key_dc, "x", "delchar");
 179         kpboth(arrows, immacs, key_npage, "\006", "npage");
 180         kpboth(arrows, immacs, key_ppage, "\002", "ppage");
 181         kpboth(arrows, immacs, key_sr, "\031", "sr");
 182         kpboth(arrows, immacs, key_eos, "dG", "clreos");
 183 #endif /* sun */
 184
 185         /*
 186          * Handle funny termcap capabilities
 187          */
 188         /* don't understand insert mode with multibyte characters */
 189         if(MB_CUR_MAX > 1) {
 190                 enter_insert_mode = NULL;
 191                 exit_insert_mode = NULL;
 192 #ifndef PRESUNEUC
 193                 insert_character = NULL;
 194 #endif /* PRESUNEUC */
 195         }
 196
 197         if (change_scroll_region && save_cursor && restore_cursor) insert_line=delete_line="";
 198         if (parm_insert_line && insert_line==NULL) insert_line="";
 199         if (parm_delete_line && delete_line==NULL) delete_line="";
 200         if (insert_character && enter_insert_mode==NULL) enter_insert_mode="";
 201         if (insert_character && exit_insert_mode==NULL) exit_insert_mode="";
 202         if (GT == 0)
 203                 tab = back_tab = NOSTR;
 204
 205 #ifdef SIGTSTP
 206         /*
 207          * Now map users susp char to ^Z, being careful that the susp
 208          * overrides any arrow key, but only for hackers (=new tty driver).
 209          */
 210         {
 211                 static unsigned char sc[2];
 212                 int i;
 213
 214                 if (!value(vi_NOVICE)) {
 215                         sc[0] = tty.c_cc[VSUSP];
 216                         sc[1] = 0;
 217                         if (sc[0] == CTRL('z')) {
 218                                 for (i=0; i<=4; i++)
 219                                         if (arrows[i].cap && arrows[i].cap[0] == CTRL('z'))
 220                                                 addmac(sc, NULL, NULL, arrows);
 221                         } else if(sc[0])
 222                                 addmac(sc, "\32", "susp", arrows);
 223                 }
 224         }
 225 #endif
 226
 227         value(vi_WINDOW) = options[vi_WINDOW].odefault = l - 1;
 228         if (defwind)
 229                 value(vi_WINDOW) = defwind;
 230         value(vi_SCROLL) = options[vi_SCROLL].odefault =
 231                 hard_copy ? 11 : (value(vi_WINDOW) / 2);
 232         if (columns <= 4)
 233                 columns = 1000;
 234         chrptr=(unsigned char *)tparm(cursor_address, 2, 2);
 235         if (chrptr==(unsigned char *)0 || chrptr[0] == 'O')     /* OOPS */
 236                 cursor_address = 0;
 237         else
 238                 costCM = cost(tparm(cursor_address, 10, 8));
 239         costSR = cost(scroll_reverse);
 240         costAL = cost(insert_line);
 241         costDP = cost(tparm(parm_down_cursor, 10));
 242         costLP = cost(tparm(parm_left_cursor, 10));
 243         costRP = cost(tparm(parm_right_cursor, 10));
 244         costCE = cost(clr_eol);
 245         costCD = cost(clr_eos);
 246         if (i <= 0)
 247                 lines = 2;
 248         /* proper strings to change tty type */
 249         termreset();
 250         gettmode();
 251         value(vi_REDRAW) = insert_line && delete_line;
 252         value(vi_OPTIMIZE) = !cursor_address && !tab;
 253         if (ospeed == B1200 && !value(vi_REDRAW))
 254                 value(vi_SLOWOPEN) = 1; /* see also gettmode above */
 255         if (unknown)
 256                 serror((unsigned char *)gettext("%s: Unknown terminal type"),
 257                     type);
 258 }
 259
 260 #ifndef sun
 261 /*
 262  * Map both map1 and map2 as below.  map2 surrounded by esc and
 263  * the 'i', 'R', or 'a' mode.  However, because we don't know
 264  * the mode here we put in the escape and when the map() routine
 265  * is called for immacs mapping the mode is appended to the
 266  * macro. Therefore when you leave insert mode, to perform a
 267  * function key, it will (once the cursor movement is done)
 268  * restore you to the proper mode.
 269  */
 270 kpboth(map1, map2, key, mapto, desc)
 271 struct maps *map1, *map2;
 272 unsigned char *key, *mapto, *desc;
 273 {
 274         unsigned char surmapto[30];
 275         unsigned char *p;
 276
 277         if (key == 0)
 278                 return;
 279         kpadd(map1, key, mapto, desc);
 280         if (any(*key, "\b\n "))
 281                 return;
 282         strcpy(surmapto, "\33");
 283         strcat(surmapto, mapto);
 284         p = freespace;
 285         strcpy(p, surmapto);
 286         freespace += strlen(surmapto) + 1;
 287         kpadd(map2, key, p, desc);
 288 }
 289 #endif /* !sun */
 290
 291 /*
 292  * Define a macro.  mapstr is the structure (mode) in which it applies.
 293  * key is the input sequence, mapto what it turns into, and desc is a
 294  * human-readable description of what's going on.
 295  */
 296 void
 297 kpadd(struct maps *mapstr, unsigned char *key, unsigned char *mapto,
 298 unsigned char *desc)
 299 {
 300         int i;
 301
 302         for (i=0; i<MAXNOMACS; i++)
 303                 if (mapstr[i].cap == 0)
 304                         break;
 305         if (key == 0 || i >= MAXNOMACS)
 306                 return;
 307         mapstr[i].cap = key;
 308         mapstr[i].mapto = mapto;
 309         mapstr[i].descr = desc;
 310 }
 311
 312 unsigned char *
 313 fkey(i)
 314         int i;
 315 {
 316         if (i < 0 || i > 9)
 317                 return ((unsigned char *)NOSTR);
 318         switch (i) {
 319         case 0: return ((unsigned char *)key_f0);
 320         case 1: return ((unsigned char *)key_f1);
 321         case 2: return ((unsigned char *)key_f2);
 322         case 3: return ((unsigned char *)key_f3);
 323         case 4: return ((unsigned char *)key_f4);
 324         case 5: return ((unsigned char *)key_f5);
 325         case 6: return ((unsigned char *)key_f6);
 326         case 7: return ((unsigned char *)key_f7);
 327         case 8: return ((unsigned char *)key_f8);
 328         case 9: return ((unsigned char *)key_f9);
 329         case 10: return ((unsigned char *)key_f0);
 330         }
 331         return ((unsigned char *)NOSTR);
 332 }
 333
 334 /*
 335  * cost figures out how much (in characters) it costs to send the string
 336  * str to the terminal.  It takes into account padding information, as
 337  * much as it can, for a typical case.  (Right now the typical case assumes
 338  * the number of lines affected is the size of the screen, since this is
 339  * mainly used to decide if insert_line or scroll_reverse is better, and this always happens
 340  * at the top of the screen.  We assume cursor motion (cursor_address) has little
 341  * padding, if any, required, so that case, which is really more important
 342  * than insert_line vs scroll_reverse, won't be really affected.)
 343  */
 344
 345 static int costnum;
 346
 347 /* ARGSUSED */
 348 int
 349 countnum(char ch)
 350 {
 351         costnum++;
 352         return (0);
 353 }
 354
 355 int
 356 cost(unsigned char *str)
 357 {
 358
 359         if (str == NULL || *str=='O')   /* OOPS */
 360                 return 10000;   /* infinity */
 361         costnum = 0;
 362         tputs((char *)str, lines, countnum);
 363         return costnum;
 364 }