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/* $Id: kHlpBareEnv.c 29 2009-07-01 20:30:29Z bird $ */
/** @file
* kHlpBare - Environment Manipulation.
*/
/*
* Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <k/kHlpEnv.h>
#include <k/kHlpString.h>
#include <k/kErrors.h>
#if K_OS == K_OS_DARWIN
#elif K_OS == K_OS_LINUX
#elif K_OS == K_OS_OS2
# define INCL_BASE
# define INCL_ERRORS
# include <os2.h>
#elif K_OS == K_OS_WINDOWS
# include <Windows.h>
#else
# error "port me"
#endif
KHLP_DECL(int) kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal)
{
#if K_OS == K_OS_DARWIN
/** @todo need to figure out where the stuff is or how it's inherited on darwin ... */
return KERR_ENVVAR_NOT_FOUND;
#elif K_OS == K_OS_LINUX
/** @todo either read /proc/self/environ or figure out where in the memory the initial environment is... */
return KERR_ENVVAR_NOT_FOUND;
#elif K_OS == K_OS_OS2
PSZ pszValue = NULL;
int rc;
*pszVal = '\0';
rc = DosScanEnv((PCSZ)pszVar, &pszValue);
if (!rc)
{
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;
#elif K_OS == K_OS_WINDOWS
DWORD cch;
SetLastError(0);
cch = GetEnvironmentVariable(pszVar, pszVal, cchVal);
if (cch > 0 && cch < cchVal)
return 0;
*pszVal = '\0';
if (cch >= cchVal)
return KERR_BUFFER_OVERFLOW;
if (GetLastError() == ERROR_ENVVAR_NOT_FOUND)
return KERR_ENVVAR_NOT_FOUND;
return GetLastError();
#else
# error "Port me"
#endif
}
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