environment.cpp

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/** @file
 *  @author Bram de Greve (bram@cocamware.com)
 *  @author Tom De Muer (tom@cocamware.com)
 *
 *  *** BEGIN LICENSE INFORMATION ***
 *  
 *  The contents of this file are subject to the Common Public Attribution License 
 *  Version 1.0 (the "License"); you may not use this file except in compliance with 
 *  the License. You may obtain a copy of the License at 
 *  http://lass.sourceforge.net/cpal-license. The License is based on the 
 *  Mozilla Public License Version 1.1 but Sections 14 and 15 have been added to cover 
 *  use of software over a computer network and provide for limited attribution for 
 *  the Original Developer. In addition, Exhibit A has been modified to be consistent 
 *  with Exhibit B.
 *  
 *  Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 *  WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 *  language governing rights and limitations under the License.
 *  
 *  The Original Code is LASS - Library of Assembled Shared Sources.
 *  
 *  The Initial Developer of the Original Code is Bram de Greve and Tom De Muer.
 *  The Original Developer is the Initial Developer.
 *  
 *  All portions of the code written by the Initial Developer are:
 *  Copyright (C) 2004-2026 the Initial Developer.
 *  All Rights Reserved.
 *  
 *  Contributor(s):
 *
 *  Alternatively, the contents of this file may be used under the terms of the 
 *  GNU General Public License Version 2 or later (the GPL), in which case the 
 *  provisions of GPL are applicable instead of those above.  If you wish to allow use
 *  of your version of this file only under the terms of the GPL and not to allow 
 *  others to use your version of this file under the CPAL, indicate your decision by 
 *  deleting the provisions above and replace them with the notice and other 
 *  provisions required by the GPL License. If you do not delete the provisions above,
 *  a recipient may use your version of this file under either the CPAL or the GPL.
 *  
 *  *** END LICENSE INFORMATION ***
 */
 
#include "lass_common.h"
#include "environment.h"
 
#if HAVE_CONFIG_H
#   include "lass_auto_config.h"
#endif
#include <stdlib.h>
 
#if LASS_PLATFORM_TYPE == LASS_PLATFORM_TYPE_WIN32
#   define LASS_UTIL_IMPL_HAVE_ENV_S
#endif
 
namespace lass
{
namespace util
{
namespace impl
{
 
const std::string lass_getenv(const std::string& name)
{
#ifdef LASS_UTIL_IMPL_HAVE_ENV_S
    size_t size;
    LASS_ENFORCE_CLIB_RC(getenv_s(&size, 0, 0, name.c_str()));
    if (size == 0)
    {
        LASS_THROW_EX(KeyError, "Could not find environment variable '" << name << "'.");
    }
    std::vector<char> buffer(size);
    LASS_ENFORCE_CLIB_RC(getenv_s(&size, &buffer[0], size, name.c_str()));
    return std::string(&buffer[0]);
#else
    const char* result = getenv(name.c_str());
    if (!result)
    {
        LASS_THROW_EX(KeyError, "Could not find environment variable '" << name << "'.");
    }
    return std::string(result);
#endif
}
 
void lass_putenv(const std::string& name, const std::string& value)
{
#ifdef LASS_UTIL_IMPL_HAVE_ENV_S
    LASS_ENFORCE_CLIB_RC(_putenv_s(name.c_str(), value.c_str()));
#else
    LASS_ENFORCE_CLIB(setenv(name.c_str(), value.c_str(), 1));
#endif
}
 
}
}
}
 
// EOF