usr.bin/tput/tput.c

   1 /*-
   2  * Copyright (c) 1980, 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1980, 1988, 1993 The Regents of the University of California.  All rights reserved.
  30  * @(#)tput.c   8.2 (Berkeley) 3/19/94
  31  * $FreeBSD: src/usr.bin/tput/tput.c,v 1.7.6.3 2002/08/17 14:52:50 tjr Exp $
  32  * $DragonFly: src/usr.bin/tput/tput.c,v 1.5 2005/07/30 11:53:52 liamfoy Exp $
  33  */
  34
  35 #include <termios.h>
  36
  37 #include <err.h>
  38 #include <termcap.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <unistd.h>
  43
  44 #undef putchar
  45 #define outc putchar
  46
  47 static void   prlongname(char *);
  48 static void   usage(void);
  49 static char **process(const char *, const char *, char **);
  50
  51 int
  52 main(int argc, char **argv)
  53 {
  54         int ch, exitval, n;
  55         char *cptr, *term, buf[1024], tbuf[1024];
  56         const char *p;
  57
  58         term = NULL;
  59         while ((ch = getopt(argc, argv, "T:")) != -1)
  60                 switch(ch) {
  61                 case 'T':
  62                         term = optarg;
  63                         break;
  64                 case '?':
  65                 default:
  66                         usage();
  67                 }
  68         argc -= optind;
  69         argv += optind;
  70
  71         if (!term && !(term = getenv("TERM")))
  72 errx(2, "no terminal type specified and no TERM environmental variable.");
  73         if (tgetent(tbuf, term) != 1)
  74                 err(3, "tgetent failure");
  75         for (exitval = 0; (p = *argv) != NULL; ++argv) {
  76                 switch (*p) {
  77                 case 'c':
  78                         if (!strcmp(p, "clear"))
  79                                 p = "cl";
  80                         break;
  81                 case 'i':
  82                         if (!strcmp(p, "init"))
  83                                 p = "is";
  84                         break;
  85                 case 'l':
  86                         if (!strcmp(p, "longname")) {
  87                                 prlongname(tbuf);
  88                                 continue;
  89                         }
  90                         break;
  91                 case 'r':
  92                         if (!strcmp(p, "reset"))
  93                                 p = "rs";
  94                         break;
  95                 }
  96                 cptr = buf;
  97                 if (tgetstr(p, &cptr))
  98                         argv = process(p, buf, argv);
  99                 else if ((n = tgetnum(p)) != -1)
 100                         (void)printf("%d\n", n);
 101                 else
 102                         exitval = !tgetflag(p);
 103         }
 104         exit(exitval);
 105 }
 106
 107 static void
 108 prlongname(char *buf)
 109 {
 110         int savech;
 111         char *p, *savep;
 112
 113         for (p = buf; *p && *p != ':'; ++p);
 114         savech = *(savep = p);
 115         for (*p = '\0'; p >= buf && *p != '|'; --p);
 116         (void)printf("%s\n", p + 1);
 117         *savep = savech;
 118 }
 119
 120 static char **
 121 process(const char *cap, const char *str, char **argv)
 122 {
 123         static char errfew[] =
 124             "not enough arguments (%d) for capability `%s'";
 125         static char errmany[] =
 126             "too many arguments (%d) for capability `%s'";
 127         static char erresc[] =
 128             "unknown %% escape `%c' for capability `%s'";
 129         const char *cp;
 130         int arg_need, arg_rows, arg_cols;
 131
 132         /* Count how many values we need for this capability. */
 133         for (cp = str, arg_need = 0; *cp != '\0'; cp++)
 134                 if (*cp == '%')
 135                             switch (*++cp) {
 136                             case 'd':
 137                             case '2':
 138                             case '3':
 139                             case '.':
 140                             case '+':
 141                                     arg_need++;
 142                                     break;
 143                             case '%':
 144                             case '>':
 145                             case 'i':
 146                             case 'r':
 147                             case 'n':
 148                             case 'B':
 149                             case 'D':
 150                                     break;
 151                             case 'p':
 152                                     if (cp[1]) {
 153                                         cp++;
 154                                         break;
 155                                     }
 156                             default:
 157                                 /*
 158                                  * hpux has lot's of them, but we complain
 159                                  */
 160                                  warnx(erresc, *cp, cap);
 161                             }
 162
 163         /* And print them. */
 164         switch (arg_need) {
 165         case 0:
 166                 (void)tputs(str, 1, outc);
 167                 break;
 168         case 1:
 169                 arg_cols = 0;
 170
 171                 if (*++argv == NULL || *argv[0] == '\0')
 172                         errx(2, errfew, 1, cap);
 173                 arg_rows = atoi(*argv);
 174
 175                 (void)tputs(tgoto(str, arg_cols, arg_rows), 1, outc);
 176                 break;
 177         case 2:
 178                 if (*++argv == NULL || *argv[0] == '\0')
 179                         errx(2, errfew, 2, cap);
 180                 arg_cols = atoi(*argv);
 181
 182                 if (*++argv == NULL || *argv[0] == '\0')
 183                         errx(2, errfew, 2, cap);
 184                 arg_rows = atoi(*argv);
 185
 186                 (void) tputs(tgoto(str, arg_cols, arg_rows), arg_rows, outc);
 187                 break;
 188
 189         default:
 190                 errx(2, errmany, arg_need, cap);
 191         }
 192         return (argv);
 193 }
 194
 195 static void
 196 usage(void)
 197 {
 198         (void)fprintf(stderr, "usage: tput [-T term] attribute ...\n");
 199         exit(2);
 200 }