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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Runtime/common/string/strprintf2.cpp
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/common/string/strprintf2.cpp')
-rw-r--r--src/VBox/Runtime/common/string/strprintf2.cpp150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/string/strprintf2.cpp b/src/VBox/Runtime/common/string/strprintf2.cpp
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+++ b/src/VBox/Runtime/common/string/strprintf2.cpp
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+/* $Id: strprintf2.cpp $ */
+/** @file
+ * IPRT - String Formatters, alternative.
+ */
+
+/*
+ * 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"
+
+#include <iprt/assert.h>
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+/** rtStrPrintf2Output() argument structure. */
+typedef struct STRPRINTF2OUTPUTARGS
+{
+ /** Pointer to current buffer position. */
+ char *pszCur;
+ /** Number of bytes left in the buffer (including the trailing zero). */
+ size_t cbLeft;
+ /** Set if we overflowed. */
+ bool fOverflowed;
+} STRPRINTF2OUTPUTARGS;
+/** Pointer to a rtStrPrintf2Output() argument structure. */
+typedef STRPRINTF2OUTPUTARGS *PSTRPRINTF2OUTPUTARGS;
+
+
+/**
+ * Output callback.
+ *
+ * @returns cbChars
+ *
+ * @param pvArg Pointer to a STRBUFARG structure.
+ * @param pachChars Pointer to an array of utf-8 characters.
+ * @param cbChars Number of bytes in the character array pointed to by pachChars.
+ */
+static DECLCALLBACK(size_t) rtStrPrintf2Output(void *pvArg, const char *pachChars, size_t cbChars)
+{
+ PSTRPRINTF2OUTPUTARGS pArgs = (PSTRPRINTF2OUTPUTARGS)pvArg;
+ char *pszCur = pArgs->pszCur; /* We actually have to spell this out for VS2010, or it will load it for each case. */
+
+ if (cbChars < pArgs->cbLeft)
+ {
+ pArgs->cbLeft -= cbChars;
+
+ /* Note! For VS2010/64 we need at least 7 case statements before it generates a jump table. */
+ switch (cbChars)
+ {
+ default:
+ memcpy(pszCur, pachChars, cbChars);
+ break;
+ case 8: pszCur[7] = pachChars[7]; RT_FALL_THRU();
+ case 7: pszCur[6] = pachChars[6]; RT_FALL_THRU();
+ case 6: pszCur[5] = pachChars[5]; RT_FALL_THRU();
+ case 5: pszCur[4] = pachChars[4]; RT_FALL_THRU();
+ case 4: pszCur[3] = pachChars[3]; RT_FALL_THRU();
+ case 3: pszCur[2] = pachChars[2]; RT_FALL_THRU();
+ case 2: pszCur[1] = pachChars[1]; RT_FALL_THRU();
+ case 1: pszCur[0] = pachChars[0]; RT_FALL_THRU();
+ case 0:
+ break;
+ }
+ pArgs->pszCur = pszCur += cbChars;
+ *pszCur = '\0';
+ }
+ else
+ {
+ size_t cbLeft = pArgs->cbLeft;
+ if (cbLeft-- > 1)
+ {
+ memcpy(pszCur, pachChars, cbLeft);
+ pArgs->pszCur = pszCur += cbLeft;
+ *pszCur = '\0';
+ pArgs->cbLeft = 1;
+ }
+ pArgs->fOverflowed = true;
+ }
+
+ return cbChars;
+}
+
+
+RTDECL(ssize_t) RTStrPrintf2V(char *pszBuffer, size_t cchBuffer, const char *pszFormat, va_list args)
+{
+ STRPRINTF2OUTPUTARGS Args;
+ size_t cchRet;
+ AssertMsg(cchBuffer > 0, ("Excellent idea! Format a string with no space for the output!\n"));
+
+ Args.pszCur = pszBuffer;
+ Args.cbLeft = cchBuffer;
+ Args.fOverflowed = false;
+
+ cchRet = RTStrFormatV(rtStrPrintf2Output, &Args, NULL, NULL, pszFormat, args);
+
+ return !Args.fOverflowed ? (ssize_t)cchRet : -(ssize_t)cchRet - 1;
+}
+RT_EXPORT_SYMBOL(RTStrPrintf2V);
+
+
+RTDECL(ssize_t) RTStrPrintf2ExV(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cchBuffer,
+ const char *pszFormat, va_list args)
+{
+ STRPRINTF2OUTPUTARGS Args;
+ size_t cchRet;
+ AssertMsg(cchBuffer > 0, ("Excellent idea! Format a string with no space for the output!\n"));
+
+ Args.pszCur = pszBuffer;
+ Args.cbLeft = cchBuffer;
+ Args.fOverflowed = false;
+ cchRet = RTStrFormatV(rtStrPrintf2Output, &Args, pfnFormat, pvArg, pszFormat, args);
+ return !Args.fOverflowed ? (ssize_t)cchRet : -(ssize_t)cchRet - 1;
+}
+RT_EXPORT_SYMBOL(RTStrPrintf2ExV);
+