usr.bin/tset/wrterm.c

   1 /*      $NetBSD: wrterm.c,v 1.7 2003/08/07 11:16:50 agc Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1991, 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 #if 0
  35 static char sccsid[] = "@(#)wrterm.c    8.1 (Berkeley) 6/9/93";
  36 #endif
  37 __RCSID("$NetBSD: wrterm.c,v 1.7 2003/08/07 11:16:50 agc Exp $");
  38 #endif /* not lint */
  39
  40 #include <sys/types.h>
  41 #include <ctype.h>
  42 #include <err.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45 #include "extern.h"
  46
  47 /*
  48  * Output termcap entry to stdout, quoting characters that would give the
  49  * shell problems and omitting empty fields.
  50  */
  51 void
  52 wrtermcap(bp)
  53         char *bp;
  54 {
  55         int ch;
  56         char *p;
  57         char *t;
  58         const char *sep;
  59
  60         /* Find the end of the terminal names. */
  61         if ((t = strchr(bp, ':')) == NULL)
  62                 errx(1, "termcap names not colon terminated");
  63         *t++ = '\0';
  64
  65         /* Output terminal names that don't have whitespace or quotes. */
  66         sep = "";
  67         while ((p = strsep(&bp, "|")) != NULL)
  68                 if (*p != '\0' && strpbrk(p, " \t'\"") == NULL) {
  69                         (void)printf("%s%s", sep, p);
  70                         sep = "|";
  71                 }
  72         (void)putchar(':');
  73
  74         /*
  75          * Output fields, transforming any dangerous characters.  Skip
  76          * empty fields or fields containing only whitespace.
  77          */
  78         while ((p = strsep(&t, ":")) != NULL) {
  79                 while ((ch = *p) != '\0' && isspace(ch))
  80                         ++p;
  81                 if (ch == '\0')
  82                         continue;
  83                 while ((ch = *p++) != '\0')
  84                         switch(ch) {
  85                         case '\033':
  86                                 (void)printf("\\E");
  87                         case  ' ':              /* No spaces. */
  88                                 (void)printf("\\040");
  89                                 break;
  90                         case '!':               /* No csh history chars. */
  91                                 (void)printf("\\041");
  92                                 break;
  93                         case ',':               /* No csh history chars. */
  94                                 (void)printf("\\054");
  95                                 break;
  96                         case '"':               /* No quotes. */
  97                                 (void)printf("\\042");
  98                                 break;
  99                         case '\'':              /* No quotes. */
 100                                 (void)printf("\\047");
 101                                 break;
 102                         case '`':               /* No quotes. */
 103                                 (void)printf("\\140");
 104                                 break;
 105                         case '\\':              /* Anything following is OK. */
 106                         case '^':
 107                                 (void)putchar(ch);
 108                                 if ((ch = *p++) == '\0')
 109                                         break;
 110                                 /* FALLTHROUGH */
 111                         default:
 112                                 (void)putchar(ch);
 113                 }
 114                 (void)putchar(':');
 115         }
 116 }