97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
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* Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id: strcollect.c,v 1.1.8.1 2000/06/23 04:37:44 assar Exp $");
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#endif
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <roken.h>
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enum { initial = 10, increment = 5 };
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static char **
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sub (char **argv, int i, int argc, va_list *ap)
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{
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do {
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if(i == argc) {
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/* realloc argv */
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char **tmp = realloc(argv, (argc + increment) * sizeof(*argv));
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if(tmp == NULL) {
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free(argv);
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errno = ENOMEM;
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return NULL;
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}
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argv = tmp;
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argc += increment;
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}
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argv[i++] = va_arg(*ap, char*);
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} while(argv[i - 1] != NULL);
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return argv;
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}
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/*
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* return a malloced vector of pointers to the strings in `ap'
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* terminated by NULL.
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*/
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char **
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vstrcollect(va_list *ap)
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{
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return sub (NULL, 0, 0, ap);
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}
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/*
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*
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*/
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char **
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strcollect(char *first, ...)
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{
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va_list ap;
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char **ret = malloc (initial * sizeof(char *));
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if (ret == NULL)
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return ret;
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ret[0] = first;
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va_start(ap, first);
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ret = sub (ret, 1, initial, &ap);
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va_end(ap);
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return ret;
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}
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