Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include <config.h>
      35             : 
      36             : #include <stdarg.h>
      37             : #include <stdlib.h>
      38             : #include <string.h>
      39             : #include <errno.h>
      40             : #include "roken.h"
      41             : 
      42             : enum { initial = 10, increment = 5 };
      43             : 
      44             : static char **
      45           0 : sub (char **argv, int i, int argc, va_list *ap)
      46             : {
      47           0 :     do {
      48           0 :         if(i == argc) {
      49             :             /* realloc argv */
      50           0 :             char **tmp = realloc(argv, (argc + increment) * sizeof(*argv));
      51           0 :             if(tmp == NULL) {
      52           0 :                 free(argv);
      53           0 :                 errno = ENOMEM;
      54           0 :                 return NULL;
      55             :             }
      56           0 :             argv  = tmp;
      57           0 :             argc += increment;
      58             :         }
      59           0 :         argv[i++] = va_arg(*ap, char*);
      60           0 :     } while(argv[i - 1] != NULL);
      61           0 :     return argv;
      62             : }
      63             : 
      64             : /*
      65             :  * return a malloced vector of pointers to the strings in `ap'
      66             :  * terminated by NULL.
      67             :  */
      68             : 
      69             : ROKEN_LIB_FUNCTION char ** ROKEN_LIB_CALL
      70           0 : vstrcollect(va_list *ap)
      71             : {
      72           0 :     return sub (NULL, 0, 0, ap);
      73             : }
      74             : 
      75             : /*
      76             :  *
      77             :  */
      78             : 
      79             : ROKEN_LIB_FUNCTION char ** ROKEN_LIB_CALL
      80           0 : strcollect(char *first, ...)
      81             : {
      82           0 :     va_list ap;
      83           0 :     char **ret = malloc (initial * sizeof(char *));
      84             : 
      85           0 :     if (ret == NULL)
      86           0 :         return ret;
      87             : 
      88           0 :     ret[0] = first;
      89           0 :     va_start(ap, first);
      90           0 :     ret = sub (ret, 1, initial, &ap);
      91           0 :     va_end(ap);
      92           0 :     return ret;
      93             : }