w32/subproc/misc.c

   1 /* Process handling for Windows
   2 Copyright (C) 1996-2012 Free Software Foundation, Inc.
   3 This file is part of GNU Make.
   4
   5 GNU Make is free software; you can redistribute it and/or modify it under the
   6 terms of the GNU General Public License as published by the Free Software
   7 Foundation; either version 3 of the License, or (at your option) any later
   8 version.
   9
  10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
  11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  12 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License along with
  15 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18 #include <stddef.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <windows.h>
  22 #include "proc.h"
  23
  24
  25 /*
  26  * Description:  Convert a NULL string terminated UNIX environment block to
  27  *              an environment block suitable for a windows32 system call
  28  *
  29  * Returns:  TRUE= success, FALSE=fail
  30  *
  31  * Notes/Dependencies:  the environment block is sorted in case-insensitive
  32  *      order, is double-null terminated, and is a char *, not a char **
  33  */
  34 int _cdecl compare(const void *a1, const void *a2)
  35 {
  36         return _stricoll(*((char**)a1),*((char**)a2));
  37 }
  38 bool_t
  39 arr2envblk(char **arr, char **envblk_out)
  40 {
  41         char **tmp;
  42         int size_needed;
  43         int arrcnt;
  44         char *ptr;
  45
  46         arrcnt = 0;
  47         while (arr[arrcnt]) {
  48                 arrcnt++;
  49         }
  50
  51         tmp = (char**) calloc(arrcnt + 1, sizeof(char *));
  52         if (!tmp) {
  53                 return FALSE;
  54         }
  55
  56         arrcnt = 0;
  57         size_needed = 0;
  58         while (arr[arrcnt]) {
  59                 tmp[arrcnt] = arr[arrcnt];
  60                 size_needed += strlen(arr[arrcnt]) + 1;
  61                 arrcnt++;
  62         }
  63         size_needed++;
  64
  65         qsort((void *) tmp, (size_t) arrcnt, sizeof (char*), compare);
  66
  67         ptr = *envblk_out = calloc(size_needed, 1);
  68         if (!ptr) {
  69                 free(tmp);
  70                 return FALSE;
  71         }
  72
  73         arrcnt = 0;
  74         while (tmp[arrcnt]) {
  75                 strcpy(ptr, tmp[arrcnt]);
  76                 ptr += strlen(tmp[arrcnt]) + 1;
  77                 arrcnt++;
  78         }
  79
  80         free(tmp);
  81         return TRUE;
  82 }