usr.bin/tput/tput.c

   1 /*      $NetBSD: tput.c,v 1.26 2013/02/05 11:31:56 roy Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1980, 1988, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1980, 1988, 1993\
  35  The Regents of the University of California.  All rights reserved.");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)tput.c      8.3 (Berkeley) 4/28/95";
  41 #endif
  42 __RCSID("$NetBSD: tput.c,v 1.26 2013/02/05 11:31:56 roy Exp $");
  43 #endif /* not lint */
  44
  45 #include <termios.h>
  46
  47 #include <err.h>
  48 #include <errno.h>
  49 #include <limits.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <term_private.h>
  54 #include <term.h>
  55 #include <unistd.h>
  56
  57 static void   usage(void) __dead;
  58 static char **process(const char *, const char *, char **);
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63         int ch, exitval, n;
  64         char *term;
  65         const char *p, *s;
  66         size_t pl;
  67
  68         term = NULL;
  69         while ((ch = getopt(argc, argv, "T:")) != -1)
  70                 switch(ch) {
  71                 case 'T':
  72                         term = optarg;
  73                         break;
  74                 case '?':
  75                 default:
  76                         usage();
  77                 }
  78         argc -= optind;
  79         argv += optind;
  80
  81         if (!term && !(term = getenv("TERM")))
  82                 errx(2, "No terminal type specified and no TERM "
  83                     "variable set in the environment.");
  84         setupterm(term, 0, NULL);
  85         for (exitval = 0; (p = *argv) != NULL; ++argv) {
  86                 switch (*p) {
  87                 case 'c':
  88                         if (!strcmp(p, "clear"))
  89                                 p = "clear";
  90                         break;
  91                 case 'i':
  92                         if (!strcmp(p, "init")) {
  93                                 s = tigetstr("is1");
  94                                 if (s != NULL)
  95                                         putp(s);
  96                                 p = "is2";
  97                         }
  98                         break;
  99                 case 'l':
 100                         if (!strcmp(p, "longname")) {
 101                                 (void)printf("%s\n", longname());
 102                                 continue;
 103                         }
 104                         break;
 105                 case 'r':
 106                         if (!strcmp(p, "reset")) {
 107                                 s = tigetstr("rs1");
 108                                 if (s != NULL)
 109                                         putp(s);
 110                                 p = "rs2";
 111                         }
 112                         break;
 113                 }
 114                 pl = strlen(p);
 115                 if (((s = tigetstr(p)) != NULL && s != (char *)-1) ||
 116                     (pl <= 2 && (s = tgetstr(p, NULL)) != NULL))
 117                         argv = process(p, s, argv);
 118                 else if ((((n = tigetnum(p)) != -1 && n != -2 ) ||
 119                            (pl <= 2 && (n = tgetnum(p)) != -1)))
 120                         (void)printf("%d\n", n);
 121                 else {
 122                         exitval = tigetflag(p);
 123                         if (exitval == -1) {
 124                                 if (pl <= 2)
 125                                         exitval = !tgetflag(p);
 126                                 else
 127                                         exitval = 1;
 128                         } else
 129                                 exitval = !exitval;
 130                 }
 131
 132                 if (argv == NULL)
 133                         break;
 134         }
 135         return argv ? exitval : 2;
 136 }
 137
 138 static char **
 139 process(const char *cap, const char *str, char **argv)
 140 {
 141         static const char errfew[] =
 142             "Not enough arguments (%d) for capability `%s'";
 143         static const char erresc[] =
 144             "Unknown %% escape (%s) for capability `%s'";
 145         static const char errnum[] =
 146             "Expected a numeric argument [%d] (%s) for capability `%s'";
 147         static const char errcharlong[] =
 148             "Platform does not fit a string into a long for capability '%s'";
 149         int i, nparams, piss[TPARM_MAX];
 150         long nums[TPARM_MAX];
 151         char *strs[TPARM_MAX], *tmp;
 152
 153         /* Count how many values we need for this capability. */
 154         errno = 0;
 155         memset(&piss, 0, sizeof(piss));
 156         nparams = _ti_parm_analyse(str, piss, TPARM_MAX);
 157         if (errno == EINVAL)
 158                 errx(2, erresc, str, cap);
 159
 160         /* Create our arrays of integers and strings */
 161         for (i = 0; i < nparams; i++) {
 162                 if (*++argv == NULL || *argv[0] == '\0')
 163                         errx(2, errfew, nparams, cap);
 164                 if (piss[i]) {
 165                         if (sizeof(char *) > sizeof(long) /* CONSTCOND */)
 166                                 errx(2, errcharlong, cap);
 167                         strs[i] = *argv;
 168                 } else {
 169                         errno = 0;
 170                         nums[i] = strtol(*argv, &tmp, 0);
 171                         if ((errno == ERANGE &&
 172                             (nums[i] == LONG_MIN || nums[i] == LONG_MAX)) ||
 173                             (errno != 0 && nums[i] == 0) ||
 174                             tmp == str ||
 175                             *tmp != '\0')
 176                                 errx(2, errnum, i + 1, *argv, cap);
 177                 }
 178         }
 179
 180         /* And output */
 181 #define p(i)    (i <= nparams ? \
 182                     (piss[i - 1] ? (long)strs[i - 1] : nums[i - 1]) : 0)
 183         putp(tparm(str, p(1), p(2), p(3), p(4), p(5), p(6), p(7), p(8), p(9)));
 184
 185         return argv;
 186 }
 187
 188 static void
 189 usage(void)
 190 {
 191         (void)fprintf(stderr,
 192             "Usage: %s [-T term] attribute [attribute-args] ...\n",
 193             getprogname());
 194         exit(2);
 195 }