| 1 | /* $Id: RTPathExt.cpp 40938 2012-04-16 11:58:26Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTPathExt
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #include "internal/iprt.h"
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| 32 | #include <iprt/path.h>
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| 33 |
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| 34 |
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| 35 | /**
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| 36 | * Finds the extension part of in a path.
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| 37 | *
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| 38 | * @returns Pointer to extension within pszPath.
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| 39 | * @returns NULL if no extension.
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| 40 | * @param pszPath Path to find extension in.
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| 41 | */
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| 42 | RTDECL(char *) RTPathExt(const char *pszPath)
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| 43 | {
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| 44 | const char *psz = pszPath;
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| 45 | const char *pszExt = NULL;
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| 46 |
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| 47 | for (;; psz++)
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| 48 | {
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| 49 | switch (*psz)
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| 50 | {
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| 51 | /* handle separators. */
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| 52 | #if defined(RT_OS_WINDOWS) || defined(RT_OS_OS2)
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| 53 | case ':':
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| 54 | pszExt = NULL;
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| 55 | break;
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| 56 |
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| 57 | case '\\':
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| 58 | #endif
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| 59 | case '/':
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| 60 | pszExt = NULL;
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| 61 | break;
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| 62 | case '.':
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| 63 | pszExt = psz;
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| 64 | break;
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| 65 |
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| 66 | /* the end */
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| 67 | case '\0':
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| 68 | if (pszExt)
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| 69 | return (char *)(void *)pszExt;
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| 70 | return NULL;
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | /* will never get here */
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| 75 | return NULL;
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| 76 | }
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| 77 |
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