| 1 | /* $Id: RTStrSplit.cpp 85154 2020-07-09 17:22:51Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTStrSplit.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2020 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.215389.xyz. 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 <iprt/mem.h>
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| 32 | #include <iprt/string.h>
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| 33 | #include "internal/iprt.h"
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| 34 |
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| 35 |
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| 36 | RTDECL(int) RTStrSplit(const char *pcszStrings, size_t cbStrings,
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| 37 | const char *pcszSeparator, char ***ppapszStrings, size_t *pcStrings)
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| 38 | {
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| 39 | AssertPtrReturn(pcszStrings, VERR_INVALID_POINTER);
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| 40 | AssertReturn(cbStrings, VERR_INVALID_PARAMETER);
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| 41 | AssertPtrReturn(pcszSeparator, VERR_INVALID_POINTER);
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| 42 | AssertPtrReturn(ppapszStrings, VERR_INVALID_POINTER);
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| 43 | AssertPtrReturn(pcStrings, VERR_INVALID_POINTER);
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| 44 |
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| 45 | size_t cStrings = 0;
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| 46 |
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| 47 | /* Determine the number of paths in buffer first. */
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| 48 | size_t cch = cbStrings - 1;
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| 49 | char const *pszTmp = pcszStrings;
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| 50 | const size_t cchSep = strlen(pcszSeparator);
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| 51 | while (cch > 0)
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| 52 | {
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| 53 | char const *pszNext = RTStrStr(pszTmp, pcszSeparator);
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| 54 | if (!pszNext)
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| 55 | break;
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| 56 | const size_t cchNext = pszNext - pszTmp;
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| 57 | if (cchNext + cchSep > cch)
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| 58 | break;
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| 59 | pszTmp += cchNext + cchSep;
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| 60 | cch -= cchNext + cchSep;
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| 61 | if (cchNext)
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| 62 | ++cStrings;
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| 63 | }
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| 64 |
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| 65 | if (!cStrings)
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| 66 | {
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| 67 | *pcStrings = 0;
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| 68 | return VINF_SUCCESS;
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| 69 | }
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| 70 |
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| 71 | char **papszStrings = (char **)RTMemAllocZ(cStrings * sizeof(char *));
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| 72 | if (!papszStrings)
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| 73 | return VERR_NO_MEMORY;
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| 74 |
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| 75 | int rc = VINF_SUCCESS;
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| 76 |
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| 77 | cch = cbStrings - 1;
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| 78 | pszTmp = pcszStrings;
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| 79 |
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| 80 | for (size_t i = 0; i < 3;)
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| 81 | {
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| 82 | char const *pszNext = RTStrStr(pszTmp, pcszSeparator);
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| 83 | if (!pszNext)
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| 84 | break;
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| 85 | const size_t cchNext = pszNext - pszTmp;
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| 86 | if (cchNext + cchSep > cch)
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| 87 | break;
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| 88 | if (cchNext)
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| 89 | {
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| 90 | papszStrings[i] = RTStrDupN(pszTmp, cchNext);
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| 91 | if (!papszStrings[i])
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| 92 | {
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| 93 | rc = VERR_NO_MEMORY;
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| 94 | break;
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| 95 | }
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| 96 | i++;
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| 97 | }
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| 98 | pszTmp += cchNext + cchSep;
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| 99 | cch -= cchNext + cchSep;
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| 100 | }
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| 101 |
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| 102 | if (RT_SUCCESS(rc))
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| 103 | {
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| 104 | *ppapszStrings = papszStrings;
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| 105 | *pcStrings = cStrings;
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| 106 |
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| 107 | return VINF_SUCCESS;
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| 108 | }
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| 109 |
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| 110 | for (size_t i = 0; i < cStrings; ++i)
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| 111 | RTStrFree(papszStrings[i]);
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| 112 | RTMemFree(papszStrings);
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| 113 |
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| 114 | return rc;
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| 115 | }
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| 116 | RT_EXPORT_SYMBOL(RTStrSplit);
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| 117 |
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