/*      $OpenBSD: getcom.c,v 1.17 2018/02/07 20:22:23 tedu Exp $        */
/*      $NetBSD: getcom.c,v 1.3 1995/03/21 15:07:30 cgd Exp $   */

/*
 * 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. 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.
 */

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

#include "extern.h"

char   *
getcom(char *buf, int size, const char *prompt, const char *error)
{
        for (;;) {
                fputs(prompt, stdout);
                if (fgets(buf, size, stdin) == NULL) {
                        if (feof(stdin))
                                die(0);
                        clearerr(stdin);
                        continue;
                }
                while (isspace((unsigned char)*buf))
                        buf++;
                if (*buf)
                        break;
                if (error)
                        puts(error);
        }
        /* If we didn't get to the end of the line, don't read it in next time */
        if (buf[strlen(buf) - 1] != '\n') {
                int i;
                while ((i = getchar()) != '\n' && i != EOF)
                        continue;
        }
        return (buf);
}


/*
 * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
 * and leaves it unchanged if flag = 0
 */
char   *
getword(char *buf1, char *buf2, int flag)
{
        int cnt;

        cnt = 1;
        while (isspace((unsigned char)*buf1))
                buf1++;
        if (*buf1 != ',' && *buf1 != '.') {
                if (!*buf1) {
                        *buf2 = '\0';
                        return (0);
                }
                while (cnt < WORDLEN && *buf1 && !isspace((unsigned char)*buf1) &&
                       *buf1 != ',' && *buf1 != '.')
                        if (flag < 0) {
                                if (isupper((unsigned char)*buf1)) {
                                        *buf2++ = tolower((unsigned char)*buf1++);
                                        cnt++;
                                } else {
                                        *buf2++ = *buf1++;
                                        cnt++;
                                }
                        } else if (flag > 0) {
                                if (islower((unsigned char)*buf1)) {
                                        *buf2++ = toupper((unsigned char)*buf1++);
                                        cnt++;
                                } else {
                                        *buf2++ = *buf1++;
                                        cnt++;
                                }
                        } else {
                                *buf2++ = *buf1++;
                                cnt++;
                        }
                if (cnt == WORDLEN)
                        while (*buf1 && !isspace((unsigned char)*buf1))
                                buf1++;
        } else
                *buf2++ = *buf1++;
        *buf2 = '\0';
        while (isspace((unsigned char)*buf1))
                buf1++;
        return (*buf1 ? buf1 : NULL);
}