| 1 | /* $Id: stringalloc.cpp 26480 2010-02-13 23:08:49Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - String Manipulation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <iprt/string.h>
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| 36 | #include "internal/iprt.h"
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| 37 |
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| 38 | #include <iprt/alloc.h>
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| 39 | #include <iprt/assert.h>
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| 40 | #include <iprt/err.h>
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| 41 | #include "internal/string.h"
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| 42 |
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| 43 |
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| 44 | /**
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| 45 | * Free string allocated by any of the non-UCS-2 string functions.
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| 46 | *
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| 47 | * @returns iprt status code.
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| 48 | * @param pszString Pointer to buffer with string to free.
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| 49 | * NULL is accepted.
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| 50 | */
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| 51 | RTDECL(void) RTStrFree(char *pszString)
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| 52 | {
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| 53 | if (pszString)
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| 54 | RTMemTmpFree(pszString);
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| 55 | }
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| 56 | RT_EXPORT_SYMBOL(RTStrFree);
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| 57 |
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| 58 |
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| 59 | /**
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| 60 | * Allocates a new copy of the given UTF-8 string.
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| 61 | *
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| 62 | * @returns Pointer to the allocated UTF-8 string.
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| 63 | * @param pszString UTF-8 string to duplicate.
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| 64 | */
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| 65 | RTDECL(char *) RTStrDup(const char *pszString)
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| 66 | {
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| 67 | AssertPtr(pszString);
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| 68 | size_t cch = strlen(pszString) + 1;
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| 69 | char *psz = (char *)RTMemAlloc(cch);
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| 70 | if (psz)
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| 71 | memcpy(psz, pszString, cch);
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| 72 | return psz;
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| 73 | }
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| 74 | RT_EXPORT_SYMBOL(RTStrDup);
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| 75 |
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| 76 |
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| 77 | /**
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| 78 | * Allocates a new copy of the given UTF-8 string.
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| 79 | *
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| 80 | * @returns iprt status code.
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| 81 | * @param ppszString Receives pointer of the allocated UTF-8 string.
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| 82 | * The returned pointer must be freed using RTStrFree().
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| 83 | * @param pszString UTF-8 string to duplicate.
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| 84 | */
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| 85 | RTDECL(int) RTStrDupEx(char **ppszString, const char *pszString)
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| 86 | {
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| 87 | AssertPtr(ppszString);
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| 88 | AssertPtr(pszString);
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| 89 |
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| 90 | size_t cch = strlen(pszString) + 1;
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| 91 | char *psz = (char *)RTMemAlloc(cch);
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| 92 | if (psz)
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| 93 | {
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| 94 | memcpy(psz, pszString, cch);
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| 95 | *ppszString = psz;
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| 96 | return VINF_SUCCESS;
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| 97 | }
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| 98 | return VERR_NO_MEMORY;
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| 99 | }
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| 100 | RT_EXPORT_SYMBOL(RTStrDupEx);
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| 101 |
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| 102 |
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| 103 | /**
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| 104 | * Allocates a new copy of the given UTF-8 substring.
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| 105 | *
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| 106 | * @returns Pointer to the allocated UTF-8 substring.
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| 107 | * @param pszString UTF-8 string to duplicate.
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| 108 | * @param cchMax The max number of chars to duplicate, not counting
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| 109 | * the terminator.
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| 110 | */
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| 111 | RTDECL(char *) RTStrDupN(const char *pszString, size_t cchMax)
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| 112 | {
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| 113 | AssertPtr(pszString);
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| 114 | char *pszEnd = (char *)memchr(pszString, '\0', cchMax);
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| 115 | size_t cch = pszEnd ? (uintptr_t)pszEnd - (uintptr_t)pszString : cchMax;
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| 116 | char *pszDst = (char *)RTMemAlloc(cch);
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| 117 | if (pszDst)
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| 118 | {
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| 119 | memcpy(pszDst, pszString, cch);
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| 120 | pszDst[cch] = '\0';
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| 121 | }
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| 122 | return pszDst;
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| 123 | }
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| 124 | RT_EXPORT_SYMBOL(RTStrDupN);
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| 125 |
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