source: trunk/kStuff/kHlp/CRT/kHlpCRTEnv.cpp

/* $Id: kHlpCRTEnv.cpp 3607 2007-10-29 00:48:50Z bird $ */
/** @file
 * kHlpEnv - Environment Manipulation.
 */

/*
 * Copyright (c) 2006-2007 knut st. osmundsen <bird-kStuff-spam@anduin.net>
 *
 * This file is part of kStuff.
 *
 * kStuff 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.
 *
 * In addition to the permissions in the GNU Lesser General Public
 * License, you are granted unlimited permission to link the compiled
 * version of this file into combinations with other programs, and to
 * distribute those combinations without any restriction coming from
 * the use of this file.
 *
 * kStuff 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 kStuff; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 */

/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#include <k/kHlpEnv.h>
#include <k/kHlpString.h>
#include <k/kErrors.h>
#include <stdlib.h>


KHLP_DECL(int) kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal)
{
    int rc = 0;
    const char *pszValue = getenv(pszVar);
    if (pszValue)
    {
        KSIZE  cch = kHlpStrLen((const char *)pszValue);
        if (cchVal > cch)
            kHlpMemCopy(pszVal, pszValue, cch + 1);
        else
            rc = KERR_BUFFER_OVERFLOW;
    }
    else
        rc = KERR_ENVVAR_NOT_FOUND;
    return rc;
}