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-rw-r--r--sal/textenc/handleundefinedunicodetotextchar.cxx172
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: */