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/* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.

 *

 * Permission to use, copy, modify, and distribute this software

 * is freely granted, provided that this notice is preserved.

 */

#include <errno.h>

#include <sys/types.h>

#include <string.h>

#include <stdlib.h>

#include <argz.h>

#include <envz.h>

error_t

_DEFUN (envz_add, (envz, envz_len, name, value),

       char **envz _AND

       size_t *envz_len _AND

       const char *name _AND

       const char *value)

{

  char *concat = NULL;

  int name_len = 0;

  int val_len = 0;

  int retval = 0;

  envz_remove(envz, envz_len, name);

  if (value)

    {

      name_len = strlen(name);

      val_len = strlen(value);

      if(!(concat = (char *) malloc(name_len + val_len + 2)))

        return ENOMEM;

      memcpy(concat, name, name_len);

      concat[name_len] = '=';

      memcpy(concat + name_len + 1, value, val_len + 1);

      retval = argz_add(envz, envz_len, concat);

      free(concat);

    }

  else

    {

      retval = argz_add(envz, envz_len, name);

    }

  return retval;

}