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shquotev.c revision 1.2 
      1 /* $NetBSD: shquotev.c,v 1.2 2001/03/10 20:54:53 christos 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 <stdlib.h>
     38 
     39 /*
     40  * shquotev():
     41  *
     42  * Apply shquote() to a set of strings, separating the results by spaces.
     43  */
     44 
     45 size_t
     46 shquotev(int argc, char * const * argv, char *buf, size_t bufsize)
     47 {
     48 	size_t rv, callrv;
     49 	int i;
     50 
     51 	rv = 0;
     52 
     53 	if (argc == 0) {
     54 		if (bufsize != 0)
     55 			*buf = '\0';
     56 		return rv;
     57 	}
     58 
     59 	for (i = 0; i < argc; i++) {
     60 		callrv = shquote(argv[i], buf, bufsize);
     61 		if (callrv == (size_t)-1)
     62 			goto bad;
     63 		rv += callrv;
     64 		buf += callrv;
     65 		bufsize = (bufsize > callrv) ? (bufsize - callrv) : 0;
     66 
     67 		if (i < (argc - 1)) {
     68 			rv++;
     69 			if (bufsize > 1) {
     70 				*buf++ = ' ';
     71 				bufsize--;
     72 			}
     73 		}
     74 	}
     75 
     76 	return rv;
     77 
     78 bad:
     79 	return (size_t)-1;
     80 }
     81