1 files changed, 172 insertions, 0 deletions
diff --git a/sal/textenc/handleundefinedunicodetotextchar.cxx b/sal/textenc/handleundefinedunicodetotextchar.cxx
new file mode 100644
index 0000000000..78b2464b70
--- /dev/null
+++ b/sal/textenc/handleundefinedunicodetotextchar.cxx
@@ -0,0 +1,172 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <rtl/character.hxx>
+#include <rtl/textcvt.h>
+#include <sal/types.h>
+
+#include "handleundefinedunicodetotextchar.hxx"
+#include "tenchelp.hxx"
+
+namespace {
+
+bool ImplIsUnicodeIgnoreChar(sal_Unicode c, sal_uInt32 nFlags)
+{
+    return
+        ((nFlags & RTL_UNICODETOTEXT_FLAGS_NONSPACING_IGNORE) != 0
+         && ImplIsZeroWidth(c))
+        || ((nFlags & RTL_UNICODETOTEXT_FLAGS_CONTROL_IGNORE) != 0
+            && ImplIsControlOrFormat(c))
+        || ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_IGNORE) != 0
+            && ImplIsPrivateUse(c));
+}
+
+bool ImplGetUndefinedAsciiMultiByte(sal_uInt32 nFlags,
+                                        char * pBuf,
+                                        sal_Size nMaxLen)
+{
+    if (nMaxLen == 0)
+        return false;
+    switch (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK)
+    {
+    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0:
+        *pBuf = 0x00;
+        break;
+
+    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_QUESTIONMARK:
+    default: /* RTL_UNICODETOTEXT_FLAGS_UNDEFINED_DEFAULT */
+        *pBuf = 0x3F;
+        break;
+
+    case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_UNDERLINE:
+        *pBuf = 0x5F;
+        break;
+    }
+    return true;
+}
+
+bool ImplGetInvalidAsciiMultiByte(sal_uInt32 nFlags,
+                                      char * pBuf,
+                                      sal_Size nMaxLen)
+{
+    if (nMaxLen == 0)
+        return false;
+    switch (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK)
+    {
+    case RTL_UNICODETOTEXT_FLAGS_INVALID_0:
+        *pBuf = 0x00;
+        break;
+
+    case RTL_UNICODETOTEXT_FLAGS_INVALID_QUESTIONMARK:
+    default: /* RTL_UNICODETOTEXT_FLAGS_INVALID_DEFAULT */
+        *pBuf = 0x3F;
+        break;
+
+    case RTL_UNICODETOTEXT_FLAGS_INVALID_UNDERLINE:
+        *pBuf = 0x5F;
+        break;
+    }
+    return true;
+}
+
+}
+
+bool sal::detail::textenc::handleUndefinedUnicodeToTextChar(
+    sal_Unicode const ** ppSrcBuf, sal_Unicode const * pEndSrcBuf,
+    char ** ppDestBuf, char const * pEndDestBuf, sal_uInt32 nFlags,
+    sal_uInt32 * pInfo)
+{
+    sal_Unicode c = **ppSrcBuf;
+
+    /* Should the private character map to one byte */
+    if ( (c >= RTL_TEXTCVT_BYTE_PRIVATE_START) && (c <= RTL_TEXTCVT_BYTE_PRIVATE_END) )
+    {
+        if ( nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_MAPTO0 )
+        {
+            **ppDestBuf = static_cast<char>(static_cast<unsigned char>(c-RTL_TEXTCVT_BYTE_PRIVATE_START));
+            (*ppDestBuf)++;
+            (*ppSrcBuf)++;
+            return true;
+        }
+    }
+
+    /* Should this character ignored (Private, Non Spacing, Control) */
+    if ( ImplIsUnicodeIgnoreChar( c, nFlags ) )
+    {
+        (*ppSrcBuf)++;
+        return true;
+    }
+
+    /* Surrogates Characters should result in */
+    /* one replacement character */
+    if (rtl::isHighSurrogate(c))
+    {
+        if ( ((*ppSrcBuf) + 1) == pEndSrcBuf )
+        {
+            *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
+            return false;
+        }
+
+        c = *((*ppSrcBuf)+1);
+        if (rtl::isLowSurrogate(c))
+            (*ppSrcBuf)++;
+        else
+        {
+            *pInfo |= RTL_UNICODETOTEXT_INFO_INVALID;
+            if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK) == RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR )
+            {
+                *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
+                return false;
+            }
+            if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_INVALID_MASK) == RTL_UNICODETOTEXT_FLAGS_INVALID_IGNORE )
+            {
+                (*ppSrcBuf)++;
+                return true;
+            }
+            if (ImplGetInvalidAsciiMultiByte(nFlags,
+                                                  *ppDestBuf,
+                                                  pEndDestBuf - *ppDestBuf))
+            {
+                ++*ppSrcBuf;
+                ++*ppDestBuf;
+                return true;
+            }
+            *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
+            return false;
+        }
+    }
+
+    *pInfo |= RTL_UNICODETOTEXT_INFO_UNDEFINED;
+    if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK) == RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR )
+    {
+        *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
+        return false;
+    }
+    if ( (nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK) == RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE )
+        (*ppSrcBuf)++;
+    else if (ImplGetUndefinedAsciiMultiByte(nFlags,
+                                            *ppDestBuf,
+                                            pEndDestBuf - *ppDestBuf))
+    {
+        ++*ppSrcBuf;
+        ++*ppDestBuf;
+    }
+    else
+    {
+        *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR
+                      | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
+        return false;
+    }
+
+    return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */