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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)wrterm.c 8.1 (Berkeley) 6/9/93
  34  * $FreeBSD: src/usr.bin/tset/wrterm.c,v 1.3 1999/08/28 01:06:59 peter Exp $
  35  * $DragonFly: src/usr.bin/tset/wrterm.c,v 1.5 2008/10/16 01:52:34 swildner Exp $
  36  */
  37
  38 #include <sys/types.h>
  39 #include <ctype.h>
  40 #include <err.h>
  41 #include <stdio.h>
  42 #include <string.h>
  43 #include "extern.h"
  44
  45 /*
  46  * Output termcap entry to stdout, quoting characters that would give the
  47  * shell problems and omitting empty fields.
  48  */
  49 void
  50 wrtermcap(char *bp)
  51 {
  52         int ch;
  53         char *p;
  54         char *t, *sep;
  55
  56         /* Find the end of the terminal names. */
  57         if ((t = strchr(bp, ':')) == NULL)
  58                 errx(1, "termcap names not colon terminated");
  59         *t++ = '\0';
  60
  61         /* Output terminal names that don't have whitespace. */
  62         sep = "";
  63         while ((p = strsep(&bp, "|")) != NULL)
  64                 if (*p != '\0' && strpbrk(p, " \t") == NULL) {
  65                         (void)printf("%s%s", sep, p);
  66                         sep = "|";
  67                 }
  68         (void)putchar(':');
  69
  70         /*
  71          * Output fields, transforming any dangerous characters.  Skip
  72          * empty fields or fields containing only whitespace.
  73          */
  74         while ((p = strsep(&t, ":")) != NULL) {
  75                 while ((ch = *p) != '\0' && isspace(ch))
  76                         ++p;
  77                 if (ch == '\0')
  78                         continue;
  79                 while ((ch = *p++) != '\0')
  80                         switch(ch) {
  81                         case '\033':
  82                                 (void)printf("\\E");
  83                         case  ' ':              /* No spaces. */
  84                                 (void)printf("\\040");
  85                                 break;
  86                         case '!':               /* No csh history chars. */
  87                                 (void)printf("\\041");
  88                                 break;
  89                         case ',':               /* No csh history chars. */
  90                                 (void)printf("\\054");
  91                                 break;
  92                         case '"':               /* No quotes. */
  93                                 (void)printf("\\042");
  94                                 break;
  95                         case '\'':              /* No quotes. */
  96                                 (void)printf("\\047");
  97                                 break;
  98                         case '`':               /* No quotes. */
  99                                 (void)printf("\\140");
 100                                 break;
 101                         case '\\':              /* Anything following is OK. */
 102                         case '^':
 103                                 (void)putchar(ch);
 104                                 if ((ch = *p++) == '\0')
 105                                         break;
 106                                 /* FALLTHROUGH */
 107                         default:
 108                                 (void)putchar(ch);
 109                 }
 110                 (void)putchar(':');
 111         }
 112 }