usr.bin/tset/wrterm.c

   1 /*-
   2  * Copyright (c) 1991, 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  * @(#)wrterm.c 8.1 (Berkeley) 6/9/93
  30  * $FreeBSD: src/usr.bin/tset/wrterm.c,v 1.3 1999/08/28 01:06:59 peter Exp $
  31  */
  32
  33 #include <sys/types.h>
  34 #include <ctype.h>
  35 #include <err.h>
  36 #include <stdio.h>
  37 #include <string.h>
  38 #include "extern.h"
  39
  40 /*
  41  * Output termcap entry to stdout, quoting characters that would give the
  42  * shell problems and omitting empty fields.
  43  */
  44 void
  45 wrtermcap(char *bp)
  46 {
  47         int ch;
  48         char *p;
  49         char *t, *sep;
  50
  51         /* Find the end of the terminal names. */
  52         if ((t = strchr(bp, ':')) == NULL)
  53                 errx(1, "termcap names not colon terminated");
  54         *t++ = '\0';
  55
  56         /* Output terminal names that don't have whitespace. */
  57         sep = strdup("");
  58         while ((p = strsep(&bp, "|")) != NULL)
  59                 if (*p != '\0' && strpbrk(p, " \t") == NULL) {
  60                         (void)printf("%s%s", sep, p);
  61                         sep = strdup("|");
  62                 }
  63         (void)putchar(':');
  64
  65         /*
  66          * Output fields, transforming any dangerous characters.  Skip
  67          * empty fields or fields containing only whitespace.
  68          */
  69         while ((p = strsep(&t, ":")) != NULL) {
  70                 while ((ch = *p) != '\0' && isspace(ch))
  71                         ++p;
  72                 if (ch == '\0')
  73                         continue;
  74                 while ((ch = *p++) != '\0')
  75                         switch(ch) {
  76                         case '\033':
  77                                 (void)printf("\\E");
  78                                 /* FALLTHROUGH */
  79                         case  ' ':              /* No spaces. */
  80                                 (void)printf("\\040");
  81                                 break;
  82                         case '!':               /* No csh history chars. */
  83                                 (void)printf("\\041");
  84                                 break;
  85                         case ',':               /* No csh history chars. */
  86                                 (void)printf("\\054");
  87                                 break;
  88                         case '"':               /* No quotes. */
  89                                 (void)printf("\\042");
  90                                 break;
  91                         case '\'':              /* No quotes. */
  92                                 (void)printf("\\047");
  93                                 break;
  94                         case '`':               /* No quotes. */
  95                                 (void)printf("\\140");
  96                                 break;
  97                         case '\\':              /* Anything following is OK. */
  98                         case '^':
  99                                 (void)putchar(ch);
 100                                 if ((ch = *p++) == '\0')
 101                                         break;
 102                                 /* FALLTHROUGH */
 103                         default:
 104                                 (void)putchar(ch);
 105                 }
 106                 (void)putchar(':');
 107         }
 108 }