env.cpp

/*  wcecompat: Windows CE C Runtime Library "compatibility" library.
 *
 *  Copyright (C) 2001-2002 Essemer Pty Ltd.  All rights reserved.
 *  http://www.essemer.com.au/
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include "ts_string.h"
#include "redir.h"    


int             num_env_vars;
char**          _environ;
wchar_t**       _wenviron;


char* getenv(const char* name)
{
        initStdHandles();       // get environment variables from ChildData
        if (_environ == NULL)
                return NULL;
//      char** env = _environ;
//      while (*env != NULL)
        for (int i=0; i<num_env_vars; i++)
        {
                char** env = &_environ[i];
                char* equals = strchr(*env, '=');
                if (equals != NULL)
                {
                        if (_strnicmp(name, *env, equals-*env) == 0)
                        {
                                return equals+1;
                        }
                }
        }
        return NULL;
}


int _putenv(const char* str)
{
        _environ = (char**)realloc(_environ, (num_env_vars+1)*sizeof(char*));
        if (_environ == NULL)
                return -1;
        _wenviron = (wchar_t**)realloc(_wenviron, (num_env_vars+1)*sizeof(wchar_t*));
        if (_wenviron == NULL)
                return -1;
        num_env_vars++;
        _environ[num_env_vars-1] = ts_strdup(str);
        _wenviron[num_env_vars-1] = ts_strdup_ascii_to_unicode(str);
        return 0;
}


int _wputenv(const wchar_t* str)
{
        _environ = (char**)realloc(_environ, (num_env_vars+1)*sizeof(char*));
        if (_environ == NULL)
                return -1;
        _wenviron = (wchar_t**)realloc(_wenviron, (num_env_vars+1)*sizeof(wchar_t*));
        if (_wenviron == NULL)
                return -1;
        num_env_vars++;
        _environ[num_env_vars-1] = ts_strdup_unicode_to_ascii(str);
        _wenviron[num_env_vars-1] = ts_strdup(str);
        return 0;
}