/*-
 * Copyright (c) 1991, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#)wrterm.c 8.1 (Berkeley) 6/9/93
 * $FreeBSD: src/usr.bin/tset/wrterm.c,v 1.3 1999/08/28 01:06:59 peter Exp $
 */

#include <sys/types.h>
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include "extern.h"

/*
 * Output termcap entry to stdout, quoting characters that would give the
 * shell problems and omitting empty fields.
 */
void
wrtermcap(char *bp)
{
        int ch;
        char *p;
        char *t, *sep;

        /* Find the end of the terminal names. */
        if ((t = strchr(bp, ':')) == NULL)
                errx(1, "termcap names not colon terminated");
        *t++ = '\0';

        /* Output terminal names that don't have whitespace. */
        sep = strdup("");
        while ((p = strsep(&bp, "|")) != NULL)
                if (*p != '\0' && strpbrk(p, " \t") == NULL) {
                        (void)printf("%s%s", sep, p);
                        sep = strdup("|");
                }
        (void)putchar(':');

        /*
         * Output fields, transforming any dangerous characters.  Skip
         * empty fields or fields containing only whitespace.
         */
        while ((p = strsep(&t, ":")) != NULL) {
                while ((ch = *p) != '\0' && isspace(ch))
                        ++p;
                if (ch == '\0')
                        continue;
                while ((ch = *p++) != '\0')
                        switch(ch) {
                        case '\033':
                                (void)printf("\\E");
                                /* FALLTHROUGH */
                        case  ' ':              /* No spaces. */
                                (void)printf("\\040");
                                break;
                        case '!':               /* No csh history chars. */
                                (void)printf("\\041");
                                break;
                        case ',':               /* No csh history chars. */
                                (void)printf("\\054");
                                break;
                        case '"':               /* No quotes. */
                                (void)printf("\\042");
                                break;
                        case '\'':              /* No quotes. */
                                (void)printf("\\047");
                                break;
                        case '`':               /* No quotes. */
                                (void)printf("\\140");
                                break;
                        case '\\':              /* Anything following is OK. */
                        case '^':
                                (void)putchar(ch);
                                if ((ch = *p++) == '\0')
                                        break;
                                /* FALLTHROUGH */
                        default:
                                (void)putchar(ch);
                }
                (void)putchar(':');
        }
}