1 files changed, 204 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/utf8-win.cpp b/src/VBox/Runtime/r3/win/utf8-win.cpp
new file mode 100644
index 00000000..7defa137
--- /dev/null
+++ b/src/VBox/Runtime/r3/win/utf8-win.cpp
@@ -0,0 +1,204 @@
+/* $Id: utf8-win.cpp $ */
+/** @file
+ * IPRT - UTF8 helpers.
+ */
+
+/*
+ * 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                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_UTF8
+#include <iprt/win/windows.h>
+
+#include <iprt/string.h>
+#include <iprt/alloc.h>
+#include <iprt/assert.h>
+#include <iprt/err.h>
+#include <iprt/utf16.h>
+
+
+
+RTR3DECL(int)  RTStrUtf8ToCurrentCPTag(char **ppszString, const char *pszString, const char *pszTag)
+{
+    return RTStrUtf8ToCurrentCPExTag(ppszString, pszString, RTSTR_MAX, pszTag);
+}
+
+
+RTR3DECL(int)  RTStrUtf8ToCurrentCPExTag(char **ppszString, const char *pszString, size_t cchString, const char *pszTag)
+{
+    Assert(ppszString);
+    Assert(pszString);
+    *ppszString = NULL;
+
+    /*
+     * If the ANSI codepage (CP_ACP) is UTF-8, no translation is needed.
+     * Same goes for empty strings.
+     */
+    if (   cchString == 0
+        || *pszString == '\0')
+        return RTStrDupNExTag(ppszString, pszString, 0, pszTag);
+    if (GetACP() == CP_UTF8)
+    {
+        int rc = RTStrValidateEncodingEx(pszString, cchString, 0);
+        AssertRCReturn(rc, rc);
+        return RTStrDupNExTag(ppszString, pszString, cchString, pszTag);
+    }
+
+    /*
+     * Convert to wide char first.
+     */
+    PRTUTF16 pwszString = NULL;
+    int rc = RTStrToUtf16Ex(pszString, cchString, &pwszString, 0, NULL);
+    if (RT_FAILURE(rc))
+        return rc;
+
+    /*
+     * First calc result string length.
+     */
+    int cbResult = WideCharToMultiByte(CP_ACP, 0, pwszString, -1, NULL, 0, NULL, NULL);
+    if (cbResult > 0)
+    {
+        /*
+         * Alloc space for result buffer.
+         */
+        LPSTR lpString = (LPSTR)RTMemTmpAllocTag(cbResult, pszTag);
+        if (lpString)
+        {
+            /*
+             * Do the translation.
+             */
+            if (WideCharToMultiByte(CP_ACP, 0, pwszString, -1, lpString, cbResult, NULL, NULL) > 0)
+            {
+                /* ok */
+                *ppszString = lpString;
+                RTMemTmpFree(pwszString);
+                return VINF_SUCCESS;
+            }
+
+            /* translation error */
+            int iLastErr = GetLastError();
+            AssertMsgFailed(("Unicode to ACP translation failed. lasterr=%d\n", iLastErr));
+            rc = RTErrConvertFromWin32(iLastErr);
+        }
+        else
+            rc = VERR_NO_TMP_MEMORY;
+        RTMemTmpFree(lpString);
+    }
+    else
+    {
+        /* translation error */
+        int iLastErr = GetLastError();
+        AssertMsgFailed(("Unicode to ACP translation failed lasterr=%d\n", iLastErr));
+        rc = RTErrConvertFromWin32(iLastErr);
+    }
+    RTMemTmpFree(pwszString);
+    return rc;
+}
+
+static int rtStrCPToUtf8Tag(char **ppszString, const char *pszString, uint32_t uCodePage, const char *pszTag)
+{
+    Assert(ppszString);
+    Assert(pszString);
+    *ppszString = NULL;
+
+    /*
+     * If the ANSI codepage (CP_ACP) is UTF-8, no translation is needed.
+     * Same goes for empty strings.
+     */
+    if (*pszString == '\0')
+        return RTStrDupExTag(ppszString, pszString, pszTag);
+    if (GetACP() == CP_UTF8)
+    {
+        int rc = RTStrValidateEncoding(pszString);
+        AssertRCReturn(rc, rc);
+        return RTStrDupExTag(ppszString, pszString, pszTag);
+    }
+
+    /** @todo is there a quicker way? Currently: ACP -> UTF-16 -> UTF-8 */
+
+    /*
+     * First calc result string length.
+     */
+    int rc;
+    int cwc = MultiByteToWideChar((UINT)uCodePage, 0, pszString, -1, NULL, 0);
+    if (cwc > 0)
+    {
+        /*
+         * Alloc space for result buffer.
+         */
+        PRTUTF16 pwszString = (PRTUTF16)RTMemTmpAlloc(cwc * sizeof(RTUTF16));
+        if (pwszString)
+        {
+            /*
+             * Do the translation.
+             */
+            if (MultiByteToWideChar((UINT)uCodePage, 0, pszString, -1, pwszString, cwc) > 0)
+            {
+                /*
+                 * Now we got UTF-16, convert it to UTF-8
+                 */
+                rc = RTUtf16ToUtf8(pwszString, ppszString);
+                RTMemTmpFree(pwszString);
+                return rc;
+            }
+            RTMemTmpFree(pwszString);
+            /* translation error */
+            int iLastErr = GetLastError();
+            AssertMsgFailed(("ACP to Unicode translation failed. lasterr=%d\n", iLastErr));
+            rc = RTErrConvertFromWin32(iLastErr);
+        }
+        else
+            rc = VERR_NO_TMP_MEMORY;
+    }
+    else
+    {
+        /* translation error */
+        int iLastErr = GetLastError();
+        AssertMsgFailed(("Unicode to ACP translation failed lasterr=%d\n", iLastErr));
+        rc = RTErrConvertFromWin32(iLastErr);
+    }
+    return rc;
+}
+
+
+RTR3DECL(int)  RTStrCurrentCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag)
+{
+    return rtStrCPToUtf8Tag(ppszString, pszString, CP_ACP, pszTag);
+}
+
+
+RTR3DECL(int)  RTStrConsoleCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag)
+{
+    return rtStrCPToUtf8Tag(ppszString, pszString, GetConsoleCP(), pszTag);
+}