1 | /* $Id: RTPathSplitA.cpp 57358 2015-08-14 15:16:38Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - RTPathSplitA and RTPathSplitFree.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2013-2015 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 | #include <iprt/assert.h>
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35 | #include <iprt/err.h>
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36 | #include <iprt/mem.h>
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37 | #include <iprt/string.h>
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38 |
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39 |
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40 |
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41 | RTDECL(int) RTPathSplitATag(const char *pszPath, PRTPATHSPLIT *ppSplit, uint32_t fFlags, const char *pszTag)
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42 | {
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43 | AssertPtrReturn(ppSplit, VERR_INVALID_POINTER);
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44 | *ppSplit = NULL;
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45 |
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46 | /*
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47 | * Try estimate a reasonable buffer size based on the path length.
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48 | * Note! No point in trying very hard to get it right.
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49 | */
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50 | size_t cbSplit = strlen(pszPath);
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51 | cbSplit += RT_OFFSETOF(RTPATHSPLIT, apszComps[cbSplit / 8]) + cbSplit / 8 + 8;
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52 | cbSplit = RT_ALIGN(cbSplit, 64);
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53 | PRTPATHSPLIT pSplit = (PRTPATHSPLIT)RTMemAllocTag(cbSplit, pszTag);
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54 | if (pSplit == NULL)
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55 | return VERR_NO_MEMORY;
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56 |
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57 | /*
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58 | * First try. If it fails due to buffer, reallocate the buffer and try again.
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59 | */
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60 | int rc = RTPathSplit(pszPath, pSplit, cbSplit, fFlags);
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61 | if (rc == VERR_BUFFER_OVERFLOW)
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62 | {
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63 | cbSplit = RT_ALIGN(pSplit->cbNeeded, 64);
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64 | RTMemFree(pSplit);
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65 |
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66 | pSplit = (PRTPATHSPLIT)RTMemAllocTag(cbSplit, pszTag);
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67 | if (pSplit == NULL)
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68 | return VERR_NO_MEMORY;
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69 | rc = RTPathSplit(pszPath, pSplit, cbSplit, fFlags);
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70 | }
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71 |
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72 | /*
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73 | * Done (one way or the other).
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74 | */
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75 | if (RT_SUCCESS(rc))
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76 | *ppSplit = pSplit;
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77 | else
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78 | RTMemFree(pSplit);
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79 | return rc;
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80 | }
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81 |
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82 |
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83 | RTDECL(void) RTPathSplitFree(PRTPATHSPLIT pSplit)
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84 | {
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85 | if (pSplit)
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86 | {
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87 | Assert(pSplit->u16Reserved = UINT16_C(0xbeef));
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88 | RTMemFree(pSplit);
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89 | }
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90 | }
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91 |
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