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/* $Id: RTPathExt.cpp $ */
/** @file
* IPRT - RTPathExt
*/
/*
* Copyright (C) 2006-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "internal/iprt.h"
#include <iprt/path.h>
/**
* Finds the extension part of in a path.
*
* @returns Pointer to extension within pszPath.
* @returns NULL if no extension.
* @param pszPath Path to find extension in.
*/
RTDECL(char *) RTPathExt(const char *pszPath)
{
const char *psz = pszPath;
const char *pszExt = NULL;
for (;; psz++)
{
switch (*psz)
{
/* handle separators. */
#if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
case ':':
pszExt = NULL;
break;
case '\\':
#endif
case '/':
pszExt = NULL;
break;
case '.':
pszExt = psz;
break;
/* the end */
case '\0':
if (pszExt)
return (char *)(void *)pszExt;
return NULL;
}
}
/* will never get here */
return NULL;
}
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