Branch data     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                 :            :     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                 :            :     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                 :            : }