usr/src/games/battlestar/getcom.c

/*
 * Copyright (c) 1983, 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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.
 */

#ifndef lint
static char sccsid[] = "@(#)getcom.c    8.1 (Berkeley) 5/31/93";
#endif /* not lint */

#include <stdio.h>
#include <ctype.h>

char *
getcom(buf, size, prompt, error)
        char *buf;
        int size;
        char *prompt, *error;
{
        for (;;) {
                fputs(prompt, stdout);
                if (fgets(buf, size, stdin) == 0) {
                        clearerr(stdin);
                        continue;
                }
                while (isspace(*buf))
                        buf++;
                if (*buf)
                        break;
                if (error)
                        puts(error);
        }
        return (buf);
}


/*
 * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
 * and leaves it unchanged if flag = 0
 */
char *
getword(buf1, buf2, flag)
        register char *buf1, *buf2;
        register flag;
{
        while (isspace(*buf1))
                buf1++;
        if (*buf1 != ',') {
                if (!*buf1) {
                        *buf2 = 0;
                        return (0);
                }
                while (*buf1 && !isspace(*buf1) && *buf1 != ',')
                        if (flag < 0)
                                if (isupper(*buf1))
                                        *buf2++ = tolower(*buf1++);
                                else
                                        *buf2++ = *buf1++;
                        else if (flag > 0)
                                if (islower(*buf1))
                                        *buf2++ = toupper(*buf1++);
                                else
                                        *buf2++ = *buf1++;
                        else
                                *buf2++ = *buf1++;
        } else
                *buf2++ = *buf1++;
        *buf2 = 0;
        while (isspace(*buf1))
                buf1++;
        return (*buf1 ? buf1 : 0);
}