contrib/ncurses-5.4/progs/tput.c

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   2  * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  ****************************************************************************/
  33
  34 /*
  35  * tput.c -- shellscript access to terminal capabilities
  36  *
  37  * by Eric S. Raymond <esr@snark.thyrsus.com>, portions based on code from
  38  * Ross Ridge's mytinfo package.
  39  */
  40
  41 #include <progs.priv.h>
  42
  43 #if !PURE_TERMINFO
  44 #include <termsort.c>
  45 #endif
  46 #include <transform.h>
  47
  48 MODULE_ID("$Id: tput.c,v 1.34 2004/01/16 23:23:11 Daniel.Jacobowitz Exp $")
  49
  50 #define PUTS(s)         fputs(s, stdout)
  51 #define PUTCHAR(c)      putchar(c)
  52 #define FLUSH           fflush(stdout)
  53
  54 typedef enum {
  55     Numbers = 0
  56     ,Num_Str
  57     ,Num_Str_Str
  58 } TParams;
  59
  60 static char *prg_name;
  61 static bool is_init = FALSE;
  62 static bool is_reset = FALSE;
  63
  64 static void
  65 quit(int status, const char *fmt,...)
  66 {
  67     va_list argp;
  68
  69     va_start(argp, fmt);
  70     fprintf(stderr, "%s: ", prg_name);
  71     vfprintf(stderr, fmt, argp);
  72     fprintf(stderr, "\n");
  73     va_end(argp);
  74     ExitProgram(status);
  75 }
  76
  77 static void
  78 usage(void)
  79 {
  80     fprintf(stderr, "usage: %s [-V] [-S] [-T term] capname\n", prg_name);
  81     ExitProgram(EXIT_FAILURE);
  82 }
  83
  84 static void
  85 check_aliases(const char *name)
  86 {
  87     is_init = (strcmp(name, PROG_INIT) == 0);
  88     is_reset = (strcmp(name, PROG_RESET) == 0);
  89 }
  90
  91 /*
  92  * Lookup the type of call we should make to tparm().  This ignores the actual
  93  * terminfo capability (bad, because it is not extensible), but makes this
  94  * code portable to platforms where sizeof(int) != sizeof(char *).
  95  *
  96  * FIXME: If we want extensibility, analyze the capability string as we do
  97  * in tparm() to decide how to parse the varargs list.
  98  */
  99 static TParams
 100 tparm_type(const char *name)
 101 {
 102 #define TD(code, longname, ti, tc) {code,longname},{code,ti},{code,tc}
 103     TParams result = Numbers;
 104     /* *INDENT-OFF* */
 105     static const struct {
 106         TParams code;
 107         const char *name;
 108     } table[] = {
 109         TD(Num_Str,     "pkey_key",     "pfkey",        "pk"),
 110         TD(Num_Str,     "pkey_local",   "pfloc",        "pl"),
 111         TD(Num_Str,     "pkey_xmit",    "pfx",          "px"),
 112         TD(Num_Str,     "plab_norm",    "pln",          "pn"),
 113         TD(Num_Str_Str, "pkey_plab",    "pfxl",         "xl"),
 114     };
 115     /* *INDENT-ON* */
 116
 117     unsigned n;
 118     for (n = 0; n < SIZEOF(table); n++) {
 119         if (!strcmp(name, table[n].name)) {
 120             result = table[n].code;
 121             break;
 122         }
 123     }
 124     return result;
 125 }
 126
 127 static int
 128 exit_code(int token, int value)
 129 {
 130     int result = 99;
 131
 132     switch (token) {
 133     case BOOLEAN:
 134         result = !value;        /* TRUE=0, FALSE=1 */
 135         break;
 136     case NUMBER:
 137         result = 0;             /* always zero */
 138         break;
 139     case STRING:
 140         result = value;         /* 0=normal, 1=missing */
 141         break;
 142     }
 143     return result;
 144 }
 145
 146 static int
 147 tput(int argc, char *argv[])
 148 {
 149     NCURSES_CONST char *name;
 150     char *s;
 151     int i, j, c;
 152     int status;
 153     FILE *f;
 154     int token = UNDEF;
 155
 156     if ((name = argv[0]) == 0)
 157         name = "";
 158     check_aliases(name);
 159     if (is_reset || is_init) {
 160         if (init_prog != 0) {
 161             system(init_prog);
 162         }
 163         FLUSH;
 164
 165         if (is_reset && reset_1string != 0) {
 166             PUTS(reset_1string);
 167         } else if (init_1string != 0) {
 168             PUTS(init_1string);
 169         }
 170         FLUSH;
 171
 172         if (is_reset && reset_2string != 0) {
 173             PUTS(reset_2string);
 174         } else if (init_2string != 0) {
 175             PUTS(init_2string);
 176         }
 177         FLUSH;
 178
 179 #ifdef set_lr_margin
 180         if (set_lr_margin != 0) {
 181             PUTS(tparm(set_lr_margin, 0, columns - 1));
 182         } else
 183 #endif
 184 #ifdef set_left_margin_parm
 185             if (set_left_margin_parm != 0
 186                 && set_right_margin_parm != 0) {
 187             PUTS(tparm(set_left_margin_parm, 0));
 188             PUTS(tparm(set_right_margin_parm, columns - 1));
 189         } else
 190 #endif
 191             if (clear_margins != 0
 192                 && set_left_margin != 0
 193                 && set_right_margin != 0) {
 194             PUTS(clear_margins);
 195             if (carriage_return != 0) {
 196                 PUTS(carriage_return);
 197             } else {
 198                 PUTCHAR('\r');
 199             }
 200             PUTS(set_left_margin);
 201             if (parm_right_cursor) {
 202                 PUTS(tparm(parm_right_cursor, columns - 1));
 203             } else {
 204                 for (i = 0; i < columns - 1; i++) {
 205                     PUTCHAR(' ');
 206                 }
 207             }
 208             PUTS(set_right_margin);
 209             if (carriage_return != 0) {
 210                 PUTS(carriage_return);
 211             } else {
 212                 PUTCHAR('\r');
 213             }
 214         }
 215         FLUSH;
 216
 217         if (init_tabs != 8) {
 218             if (clear_all_tabs != 0 && set_tab != 0) {
 219                 for (i = 0; i < columns - 1; i += 8) {
 220                     if (parm_right_cursor) {
 221                         PUTS(tparm(parm_right_cursor, 8));
 222                     } else {
 223                         for (j = 0; j < 8; j++)
 224                             PUTCHAR(' ');
 225                     }
 226                     PUTS(set_tab);
 227                 }
 228                 FLUSH;
 229             }
 230         }
 231
 232         if (is_reset && reset_file != 0) {
 233             f = fopen(reset_file, "r");
 234             if (f == 0) {
 235                 quit(4 + errno, "Can't open reset_file: '%s'", reset_file);
 236             }
 237             while ((c = fgetc(f)) != EOF) {
 238                 PUTCHAR(c);
 239             }
 240             fclose(f);
 241         } else if (init_file != 0) {
 242             f = fopen(init_file, "r");
 243             if (f == 0) {
 244                 quit(4 + errno, "Can't open init_file: '%s'", init_file);
 245             }
 246             while ((c = fgetc(f)) != EOF) {
 247                 PUTCHAR(c);
 248             }
 249             fclose(f);
 250         }
 251         FLUSH;
 252
 253         if (is_reset && reset_3string != 0) {
 254             PUTS(reset_3string);
 255         } else if (init_2string != 0) {
 256             PUTS(init_2string);
 257         }
 258         FLUSH;
 259         return 0;
 260     }
 261
 262     if (strcmp(name, "longname") == 0) {
 263         PUTS(longname());
 264         return 0;
 265     }
 266 #if !PURE_TERMINFO
 267     {
 268         const struct name_table_entry *np;
 269
 270         if ((np = _nc_find_entry(name, _nc_get_hash_table(1))) != 0)
 271             switch (np->nte_type) {
 272             case BOOLEAN:
 273                 if (bool_from_termcap[np->nte_index])
 274                     name = boolnames[np->nte_index];
 275                 break;
 276
 277             case NUMBER:
 278                 if (num_from_termcap[np->nte_index])
 279                     name = numnames[np->nte_index];
 280                 break;
 281
 282             case STRING:
 283                 if (str_from_termcap[np->nte_index])
 284                     name = strnames[np->nte_index];
 285                 break;
 286             }
 287     }
 288 #endif
 289
 290     if ((status = tigetflag(name)) != -1) {
 291         return exit_code(BOOLEAN, status);
 292     } else if ((status = tigetnum(name)) != CANCELLED_NUMERIC) {
 293         (void) printf("%d\n", status);
 294         return exit_code(NUMBER, 0);
 295     } else if ((s = tigetstr(name)) == CANCELLED_STRING) {
 296         quit(4, "unknown terminfo capability '%s'", name);
 297     } else if (s != ABSENT_STRING) {
 298         token = STRING;
 299         if (argc > 1) {
 300             int k;
 301             int popcount;
 302             long numbers[1 + NUM_PARM];
 303             char *strings[1 + NUM_PARM];
 304             char *p_is_s[NUM_PARM];
 305
 306             /* Nasty hack time. The tparm function needs to see numeric
 307              * parameters as numbers, not as pointers to their string
 308              * representations
 309              */
 310
 311             for (k = 1; k < argc; k++) {
 312                 char *tmp = 0;
 313                 strings[k] = argv[k];
 314                 numbers[k] = strtol(argv[k], &tmp, 0);
 315                 if (tmp == 0 || *tmp != 0)
 316                     numbers[k] = 0;
 317             }
 318             for (k = argc; k <= NUM_PARM; k++) {
 319                 numbers[k] = 0;
 320                 strings[k] = 0;
 321             }
 322
 323             switch (tparm_type(name)) {
 324             case Num_Str:
 325                 s = tparm(s, numbers[1], strings[2]);
 326                 break;
 327             case Num_Str_Str:
 328                 s = tparm(s, numbers[1], strings[2], strings[3]);
 329                 break;
 330             default:
 331                 (void) _nc_tparm_analyze(s, p_is_s, &popcount);
 332 #define myParam(n) (p_is_s[n - 1] != 0 ? ((long) strings[n]) : numbers[n])
 333                 s = tparm(s,
 334                           myParam(1),
 335                           myParam(2),
 336                           myParam(3),
 337                           myParam(4),
 338                           myParam(5),
 339                           myParam(6),
 340                           myParam(7),
 341                           myParam(8),
 342                           myParam(9));
 343                 break;
 344             }
 345         }
 346
 347         /* use putp() in order to perform padding */
 348         putp(s);
 349         return exit_code(STRING, 0);
 350     }
 351     return exit_code(STRING, 1);
 352 }
 353
 354 int
 355 main(int argc, char **argv)
 356 {
 357     char *term;
 358     int errret;
 359     bool cmdline = TRUE;
 360     int c;
 361     char buf[BUFSIZ];
 362     int result = 0;
 363     int err;
 364
 365     check_aliases(prg_name = _nc_rootname(argv[0]));
 366
 367     term = getenv("TERM");
 368
 369     while ((c = getopt(argc, argv, "ST:V")) != EOF) {
 370         switch (c) {
 371         case 'S':
 372             cmdline = FALSE;
 373             break;
 374         case 'T':
 375             use_env(FALSE);
 376             term = optarg;
 377             break;
 378         case 'V':
 379             puts(curses_version());
 380             return EXIT_SUCCESS;
 381         default:
 382             usage();
 383             /* NOTREACHED */
 384         }
 385     }
 386
 387     /*
 388      * Modify the argument list to omit the options we processed.
 389      */
 390     if (is_reset || is_init) {
 391         if (optind-- < argc) {
 392             argc -= optind;
 393             argv += optind;
 394         }
 395         argv[0] = prg_name;
 396     } else {
 397         argc -= optind;
 398         argv += optind;
 399     }
 400
 401     if (term == 0 || *term == '\0')
 402         quit(2, "No value for $TERM and no -T specified");
 403
 404     if (setupterm(term, STDOUT_FILENO, &errret) != OK && errret <= 0)
 405         quit(3, "unknown terminal \"%s\"", term);
 406
 407     if (cmdline) {
 408         if ((argc <= 0) && !is_reset && !is_init)
 409             usage();
 410         return tput(argc, argv);
 411     }
 412
 413     while (fgets(buf, sizeof(buf), stdin) != 0) {
 414         char *argvec[16];       /* command, 9 parms, null, & slop */
 415         int argnum = 0;
 416         char *cp;
 417
 418         /* crack the argument list into a dope vector */
 419         for (cp = buf; *cp; cp++) {
 420             if (isspace(UChar(*cp))) {
 421                 *cp = '\0';
 422             } else if (cp == buf || cp[-1] == 0) {
 423                 argvec[argnum++] = cp;
 424                 if (argnum >= (int) SIZEOF(argvec) - 1)
 425                     break;
 426             }
 427         }
 428         argvec[argnum] = 0;
 429
 430         if (argnum != 0
 431             && (err = tput(argnum, argvec)) != 0) {
 432             if (result == 0)
 433                 result = 4;     /* will return value >4 */
 434             ++result;
 435         }
 436     }
 437
 438     return result;
 439 }