lib/libc/gen/shquotev.c

   1 /* $NetBSD: shquotev.c,v 1.5 2005/06/12 05:21:27 lukem Exp $ */
   2
   3 /*
   4  * Copyright (c) 2001 Christopher G. Demetriou
   5  * 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *          This product includes software developed for the
  18  *          NetBSD Project.  See http://www.NetBSD.org/ for
  19  *          information about NetBSD.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
  35  */
  36
  37 #include <sys/cdefs.h>
  38 #if defined(LIBC_SCCS) && !defined(lint)
  39 __RCSID("$NetBSD: shquotev.c,v 1.5 2005/06/12 05:21:27 lukem Exp $");
  40 #endif /* LIBC_SCCS and not lint */
  41
  42 #include "namespace.h"
  43 #include <stdlib.h>
  44
  45 /*
  46  * shquotev():
  47  *
  48  * Apply shquote() to a set of strings, separating the results by spaces.
  49  */
  50
  51 size_t
  52 shquotev(int argc, char * const * argv, char *buf, size_t bufsize)
  53 {
  54         size_t rv, callrv;
  55         int i;
  56
  57         rv = 0;
  58
  59         if (argc == 0) {
  60                 if (bufsize != 0)
  61                         *buf = '\0';
  62                 return rv;
  63         }
  64
  65         for (i = 0; i < argc; i++) {
  66                 callrv = shquote(argv[i], buf, bufsize);
  67                 if (callrv == (size_t)-1)
  68                         goto bad;
  69                 rv += callrv;
  70                 buf += callrv;
  71                 bufsize = (bufsize > callrv) ? (bufsize - callrv) : 0;
  72
  73                 if (i < (argc - 1)) {
  74                         rv++;
  75                         if (bufsize > 1) {
  76                                 *buf++ = ' ';
  77                                 bufsize--;
  78                         }
  79                 }
  80         }
  81
  82         return rv;
  83
  84 bad:
  85         return (size_t)-1;
  86 }