battlestar/getcom.c

   1 /*      $NetBSD: getcom.c,v 1.11 2003/08/07 09:37:02 agc Exp $  */
   2
   3 /*
   4  * Copyright (c) 1983, 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[] = "@(#)getcom.c    8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: getcom.c,v 1.11 2003/08/07 09:37:02 agc Exp $");
  38 #endif
  39 #endif                          /* not lint */
  40
  41 #include "extern.h"
  42
  43 char   *
  44 getcom(buf, size, prompt, error)
  45         char   *buf;
  46         int     size;
  47         const char   *prompt, *error;
  48 {
  49         for (;;) {
  50                 fputs(prompt, stdout);
  51                 if (fgets(buf, size, stdin) == 0) {
  52                         if (feof(stdin))
  53                                 die();
  54                         clearerr(stdin);
  55                         continue;
  56                 }
  57                 while (isspace(*buf))
  58                         buf++;
  59                 if (*buf)
  60                         break;
  61                 if (error)
  62                         puts(error);
  63         }
  64         /* If we didn't get to the end of the line, don't read it in next time. */
  65         if (buf[strlen(buf) - 1] != '\n') {
  66                 int i;
  67                 while ((i = getchar()) != '\n' && i != EOF)
  68                         continue;
  69         }
  70         return (buf);
  71 }
  72
  73
  74 /*
  75  * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
  76  * and leaves it unchanged if flag = 0
  77  */
  78 char   *
  79 getword(buf1, buf2, flag)
  80         char   *buf1, *buf2;
  81         int     flag;
  82 {
  83         int cnt;
  84
  85         cnt = 1;
  86         while (isspace(*buf1))
  87                 buf1++;
  88         if (*buf1 != ',') {
  89                 if (!*buf1) {
  90                         *buf2 = 0;
  91                         return (0);
  92                 }
  93                 while (cnt < WORDLEN && *buf1 && !isspace(*buf1) && *buf1 != ',')
  94                         if (flag < 0) {
  95                                 if (isupper(*buf1)) {
  96                                         *buf2++ = tolower(*buf1++);
  97                                         cnt++;
  98                                 } else {
  99                                         *buf2++ = *buf1++;
 100                                         cnt++;
 101                                 }
 102                         } else if (flag > 0) {
 103                                 if (islower(*buf1)) {
 104                                         *buf2++ = toupper(*buf1++);
 105                                         cnt++;
 106                                 } else {
 107                                         *buf2++ = *buf1++;
 108                                         cnt++;
 109                                 }
 110                         } else {
 111                                 *buf2++ = *buf1++;
 112                                 cnt++;
 113                         }
 114                 if (cnt == WORDLEN)
 115                         while (*buf1 && !isspace(*buf1))
 116                                 buf1++;
 117         } else
 118                 *buf2++ = *buf1++;
 119         *buf2 = '\0';
 120         while (isspace(*buf1))
 121                 buf1++;
 122         return (*buf1 ? buf1 : NULL);
 123 }