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-rw-r--r--src/VBox/Runtime/common/string/stringalloc.cpp321
1 files changed, 321 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/string/stringalloc.cpp b/src/VBox/Runtime/common/string/stringalloc.cpp
new file mode 100644
index 00000000..921e9bb9
--- /dev/null
+++ b/src/VBox/Runtime/common/string/stringalloc.cpp
@@ -0,0 +1,321 @@
+/* $Id: stringalloc.cpp $ */
+/** @file
+ * IPRT - String Manipulation.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <iprt/string.h>
+#include "internal/iprt.h"
+
+#ifndef IN_RING0
+# include <iprt/alloca.h>
+#endif
+#include <iprt/assert.h>
+#include <iprt/mem.h>
+#include <iprt/err.h>
+#include "internal/string.h"
+
+
+
+RTDECL(char *) RTStrAllocTag(size_t cb, const char *pszTag)
+{
+ char *psz = (char *)RTMemAllocTag(RT_MAX(cb, 1), pszTag);
+ if (psz)
+ *psz = '\0';
+ return psz;
+}
+RT_EXPORT_SYMBOL(RTStrAllocTag);
+
+
+RTDECL(int) RTStrAllocExTag(char **ppsz, size_t cb, const char *pszTag)
+{
+ char *psz = *ppsz = (char *)RTMemAllocTag(RT_MAX(cb, 1), pszTag);
+ if (psz)
+ {
+ *psz = '\0';
+ return VINF_SUCCESS;
+ }
+ return VERR_NO_STR_MEMORY;
+}
+RT_EXPORT_SYMBOL(RTStrAllocExTag);
+
+
+RTDECL(int) RTStrReallocTag(char **ppsz, size_t cbNew, const char *pszTag)
+{
+ char *pszOld = *ppsz;
+ if (!cbNew)
+ {
+ RTMemFree(pszOld);
+ *ppsz = NULL;
+ }
+ else if (pszOld)
+ {
+ char *pszNew = (char *)RTMemReallocTag(pszOld, cbNew, pszTag);
+ if (!pszNew)
+ return VERR_NO_STR_MEMORY;
+ pszNew[cbNew - 1] = '\0';
+ *ppsz = pszNew;
+ }
+ else
+ {
+ char *pszNew = (char *)RTMemAllocTag(cbNew, pszTag);
+ if (!pszNew)
+ return VERR_NO_STR_MEMORY;
+ pszNew[0] = '\0';
+ pszNew[cbNew - 1] = '\0';
+ *ppsz = pszNew;
+ }
+ return VINF_SUCCESS;
+}
+RT_EXPORT_SYMBOL(RTStrReallocTag);
+
+RTDECL(void) RTStrFree(char *pszString)
+{
+ if (pszString)
+ RTMemTmpFree(pszString);
+}
+RT_EXPORT_SYMBOL(RTStrFree);
+
+
+RTDECL(char *) RTStrDupTag(const char *pszString, const char *pszTag)
+{
+#if defined(__cplusplus)
+ AssertPtr(pszString);
+#endif
+ size_t cch = strlen(pszString) + 1;
+ char *psz = (char *)RTMemAllocTag(cch, pszTag);
+ if (psz)
+ memcpy(psz, pszString, cch);
+ return psz;
+}
+RT_EXPORT_SYMBOL(RTStrDupTag);
+
+
+RTDECL(int) RTStrDupExTag(char **ppszCopy, const char *pszString, const char *pszTag)
+{
+#if defined(__cplusplus)
+ AssertPtr(ppszCopy);
+ AssertPtr(pszString);
+#endif
+
+ size_t cch = strlen(pszString);
+ char *pszDst = (char *)RTMemAllocTag(cch + 1, pszTag);
+ if (pszDst)
+ {
+ memcpy(pszDst, pszString, cch);
+ pszDst[cch] = '\0';
+ *ppszCopy = pszDst;
+ return VINF_SUCCESS;
+ }
+ *ppszCopy = NULL;
+ return VERR_NO_STR_MEMORY;
+}
+RT_EXPORT_SYMBOL(RTStrDupExTag);
+
+
+RTDECL(char *) RTStrDupNTag(const char *pszString, size_t cchMax, const char *pszTag)
+{
+#if defined(__cplusplus)
+ AssertPtr(pszString);
+#endif
+ char const *pszEnd = RTStrEnd(pszString, cchMax);
+ size_t cch = pszEnd ? (uintptr_t)pszEnd - (uintptr_t)pszString : cchMax;
+ char *pszDst = (char *)RTMemAllocTag(cch + 1, pszTag);
+ if (pszDst)
+ {
+ memcpy(pszDst, pszString, cch);
+ pszDst[cch] = '\0';
+ }
+ return pszDst;
+}
+RT_EXPORT_SYMBOL(RTStrDupNTag);
+
+
+RTDECL(int) RTStrDupNExTag(char **ppszCopy, const char *pszString, size_t cchMax, const char *pszTag)
+{
+#if defined(__cplusplus)
+ AssertPtr(pszString);
+#endif
+ char const *pszEnd = RTStrEnd(pszString, cchMax);
+ size_t cch = pszEnd ? (uintptr_t)pszEnd - (uintptr_t)pszString : cchMax;
+ char *pszDst = (char *)RTMemAllocTag(cch + 1, pszTag);
+ if (pszDst)
+ {
+ memcpy(pszDst, pszString, cch);
+ pszDst[cch] = '\0';
+ *ppszCopy = pszDst;
+ return VINF_SUCCESS;
+ }
+ *ppszCopy = NULL;
+ return VERR_NO_STR_MEMORY;
+}
+RT_EXPORT_SYMBOL(RTStrDupNExTag);
+
+
+RTDECL(int) RTStrAAppendTag(char **ppsz, const char *pszAppend, const char *pszTag)
+{
+ if (!pszAppend)
+ return VINF_SUCCESS;
+ return RTStrAAppendNTag(ppsz, pszAppend, RTSTR_MAX, pszTag);
+}
+
+
+RTDECL(int) RTStrAAppendNTag(char **ppsz, const char *pszAppend, size_t cchAppend, const char *pszTag)
+{
+ size_t cchOrg;
+ char *pszNew;
+
+ if (!cchAppend)
+ return VINF_SUCCESS;
+ if (cchAppend == RTSTR_MAX)
+ cchAppend = strlen(pszAppend);
+ else
+ Assert(cchAppend == RTStrNLen(pszAppend, cchAppend));
+
+ cchOrg = *ppsz ? strlen(*ppsz) : 0;
+ pszNew = (char *)RTMemReallocTag(*ppsz, cchOrg + cchAppend + 1, pszTag);
+ if (!pszNew)
+ return VERR_NO_STR_MEMORY;
+
+ memcpy(&pszNew[cchOrg], pszAppend, cchAppend);
+ pszNew[cchOrg + cchAppend] = '\0';
+
+ *ppsz = pszNew;
+ return VINF_SUCCESS;
+}
+
+
+#if !defined(IN_RING0) && !defined(IPRT_NO_ALLOCA_TROUBLE)
+
+/* XXX Currently not needed anywhere. alloca() induces some linker problems for ring 0 code
+ * with newer versions of VCC */
+
+RTDECL(int) RTStrAAppendExNVTag(char **ppsz, size_t cPairs, va_list va, const char *pszTag)
+{
+ AssertPtr(ppsz);
+ if (!cPairs)
+ return VINF_SUCCESS;
+
+ /*
+ * Determine the length of each string and calc the new total.
+ */
+ struct RTStrAAppendExNVStruct
+ {
+ const char *psz;
+ size_t cch;
+ } *paPairs = (struct RTStrAAppendExNVStruct *)alloca(cPairs * sizeof(*paPairs));
+ AssertReturn(paPairs, VERR_NO_STR_MEMORY);
+
+ size_t cchOrg = *ppsz ? strlen(*ppsz) : 0;
+ size_t cchNewTotal = cchOrg;
+ for (size_t i = 0; i < cPairs; i++)
+ {
+ const char *psz = va_arg(va, const char *);
+ size_t cch = va_arg(va, size_t);
+ AssertPtrNull(psz);
+ Assert(cch == RTSTR_MAX || cch == RTStrNLen(psz, cch));
+
+ if (cch == RTSTR_MAX)
+ cch = psz ? strlen(psz) : 0;
+ cchNewTotal += cch;
+
+ paPairs[i].cch = cch;
+ paPairs[i].psz = psz;
+ }
+ cchNewTotal++; /* '\0' */
+
+ /*
+ * Try reallocate the string.
+ */
+ char *pszNew = (char *)RTMemReallocTag(*ppsz, cchNewTotal, pszTag);
+ if (!pszNew)
+ return VERR_NO_STR_MEMORY;
+
+ /*
+ * Do the appending.
+ */
+ size_t off = cchOrg;
+ for (size_t i = 0; i < cPairs; i++)
+ {
+ memcpy(&pszNew[off], paPairs[i].psz, paPairs[i].cch);
+ off += paPairs[i].cch;
+ }
+ Assert(off + 1 == cchNewTotal);
+ pszNew[off] = '\0';
+
+ /* done */
+ *ppsz = pszNew;
+ return VINF_SUCCESS;
+}
+RT_EXPORT_SYMBOL(RTStrAAppendExNVTag);
+
+#endif
+
+
+RTDECL(int) RTStrATruncateTag(char **ppsz, size_t cchNew, const char *pszTag)
+{
+ char *pszNew;
+ char *pszOld = *ppsz;
+ if (!cchNew)
+ {
+ if (pszOld && *pszOld)
+ {
+ *pszOld = '\0';
+ pszNew = (char *)RTMemReallocTag(pszOld, 1, pszTag);
+ if (pszNew)
+ *ppsz = pszNew;
+ }
+ }
+ else
+ {
+ char *pszZero;
+ AssertPtrReturn(pszOld, VERR_OUT_OF_RANGE);
+ AssertReturn(cchNew < ~(size_t)64, VERR_OUT_OF_RANGE);
+ pszZero = RTStrEnd(pszOld, cchNew + 63);
+ AssertReturn(!pszZero || (size_t)(pszZero - pszOld) >= cchNew, VERR_OUT_OF_RANGE);
+ pszOld[cchNew] = '\0';
+ if (!pszZero)
+ {
+ pszNew = (char *)RTMemReallocTag(pszOld, cchNew + 1, pszTag);
+ if (pszNew)
+ *ppsz = pszNew;
+ }
+ }
+ return VINF_SUCCESS;
+}
+RT_EXPORT_SYMBOL(RTStrATruncateTag);
+
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