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shquotev.c revision 1.4 
      1 /* $NetBSD: shquotev.c,v 1.4 2005/02/09 21:35:46 kleink 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 "namespace.h"
     38 #include <stdlib.h>
     39 
     40 /*
     41  * shquotev():
     42  *
     43  * Apply shquote() to a set of strings, separating the results by spaces.
     44  */
     45 
     46 size_t
     47 shquotev(int argc, char * const * argv, char *buf, size_t bufsize)
     48 {
     49 	size_t rv, callrv;
     50 	int i;
     51 
     52 	rv = 0;
     53 
     54 	if (argc == 0) {
     55 		if (bufsize != 0)
     56 			*buf = '\0';
     57 		return rv;
     58 	}
     59 
     60 	for (i = 0; i < argc; i++) {
     61 		callrv = shquote(argv[i], buf, bufsize);
     62 		if (callrv == (size_t)-1)
     63 			goto bad;
     64 		rv += callrv;
     65 		buf += callrv;
     66 		bufsize = (bufsize > callrv) ? (bufsize - callrv) : 0;
     67 
     68 		if (i < (argc - 1)) {
     69 			rv++;
     70 			if (bufsize > 1) {
     71 				*buf++ = ' ';
     72 				bufsize--;
     73 			}
     74 		}
     75 	}
     76 
     77 	return rv;
     78 
     79 bad:
     80 	return (size_t)-1;
     81 }
     82