move rtf escaping functions to msfilter, so starmath can use them as well

Change-Id: Ib847f5207f3f36585427313c1454b0fba730c503

4 files changed, 207 insertions, 0 deletions

diff --git a/filter/Library_msfilter.mk b/filter/Library_msfilter.mk
index a592fbf9ffeb..c7eebae6df41 100644
--- a/filter/Library_msfilter.mk
+++ b/filter/Library_msfilter.mk
@@ -67,6 +67,7 @@ $(eval $(call gb_Library_add_exception_objects,msfilter,\
 	filter/source/msfilter/services \
 	filter/source/msfilter/svdfppt \
 	filter/source/msfilter/svxmsbas2 \
+	filter/source/msfilter/rtfutil \
 	filter/source/msfilter/util \
 ))
 
diff --git a/filter/Package_inc.mk b/filter/Package_inc.mk
index 141cc29dabfa..578fe96207df 100644
--- a/filter/Package_inc.mk
+++ b/filter/Package_inc.mk
@@ -29,6 +29,7 @@ $(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/mstoolbar.hxx,f
 $(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/msvbahelper.hxx,filter/msfilter/msvbahelper.hxx))
 $(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/svdfppt.hxx,filter/msfilter/svdfppt.hxx))
 $(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/svxmsbas.hxx,filter/msfilter/svxmsbas.hxx))
+$(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/rtfutil.hxx,filter/msfilter/rtfutil.hxx))
 $(eval $(call gb_Package_add_file,filter_inc,inc/filter/msfilter/util.hxx,filter/msfilter/util.hxx))
 
 # vim: set noet sw=4 ts=4:
diff --git a/filter/inc/filter/msfilter/rtfutil.hxx b/filter/inc/filter/msfilter/rtfutil.hxx
new file mode 100644
index 000000000000..6f5d82c37283
--- /dev/null
+++ b/filter/inc/filter/msfilter/rtfutil.hxx
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Version: MPL 1.1 / GPLv3+ / LGPLv3+
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Initial Developer of the Original Code is
+ *       Miklos Vajna <vmiklos@suse.cz> (SUSE, Inc.)
+ * Portions created by the Initial Developer are Copyright (C) 2012 the
+ * Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+ * the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+ * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+ * instead of those above.
+ */
+
+#ifndef INCLUDED_MSFILTER_RTFUTIL_HXX
+#define INCLUDED_MSFILTER_RTFUTIL_HXX
+
+#include "filter/msfilter/msfilterdllapi.h"
+#include <rtl/string.hxx>
+#include <rtl/textenc.h>
+#include <tools/string.hxx>
+
+namespace msfilter {
+namespace rtfutil {
+
+/// Outputs a single character in hex form.
+MSFILTER_DLLPUBLIC OString OutHex(sal_uLong nHex, sal_uInt8 nLen);
+
+/// Handles correct unicode and legacy export of a single character.
+MSFILTER_DLLPUBLIC OString OutChar(sal_Unicode c, int *pUCMode, rtl_TextEncoding eDestEnc);
+
+/// Handles correct unicode and legacy export of a string.
+MSFILTER_DLLPUBLIC OString OutString(const String &rStr, rtl_TextEncoding eDestEnc);
+
+}
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/filter/source/msfilter/rtfutil.cxx b/filter/source/msfilter/rtfutil.cxx
new file mode 100644
index 000000000000..ebb72bdeda94
--- /dev/null
+++ b/filter/source/msfilter/rtfutil.cxx
@@ -0,0 +1,151 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Version: MPL 1.1 / GPLv3+ / LGPLv3+
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Initial Developer of the Original Code is
+ *       Miklos Vajna <vmiklos@suse.cz> (SUSE, Inc.)
+ * Portions created by the Initial Developer are Copyright (C) 2012 the
+ * Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+ * the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+ * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+ * instead of those above.
+ */
+
+#include <filter/msfilter/rtfutil.hxx>
+#include <rtl/strbuf.hxx>
+#include <svtools/rtfkeywd.hxx>
+
+namespace msfilter {
+namespace rtfutil {
+
+OString OutHex(sal_uLong nHex, sal_uInt8 nLen)
+{
+    sal_Char aNToABuf[] = "0000000000000000";
+
+    OSL_ENSURE( nLen < sizeof(aNToABuf), "nLen is too big" );
+    if( nLen >= sizeof(aNToABuf) )
+        nLen = (sizeof(aNToABuf)-1);
+
+    // Set pointer to the buffer end
+    sal_Char* pStr = aNToABuf + (sizeof(aNToABuf)-1);
+    for( sal_uInt8 n = 0; n < nLen; ++n )
+    {
+        *(--pStr) = (sal_Char)(nHex & 0xf ) + 48;
+        if( *pStr > '9' )
+            *pStr += 39;
+        nHex >>= 4;
+    }
+    return OString(pStr);
+}
+
+OString OutChar(sal_Unicode c, int *pUCMode, rtl_TextEncoding eDestEnc)
+{
+    OStringBuffer aBuf;
+    const sal_Char* pStr = 0;
+    // 0x0b instead of \n, etc because of the replacements in SwWW8AttrIter::GetSnippet()
+    switch (c)
+    {
+        case 0x0b:
+            // hard line break
+            pStr = OOO_STRING_SVTOOLS_RTF_LINE;
+            break;
+        case '\t':
+            pStr = OOO_STRING_SVTOOLS_RTF_TAB;
+            break;
+        case '\\':
+        case '}':
+        case '{':
+            aBuf.append('\\');
+            aBuf.append((sal_Char)c);
+            break;
+        case 0xa0:
+            // non-breaking space
+            pStr = "\\~";
+            break;
+        case 0x1e:
+            // non-breaking hyphen
+            pStr = "\\_";
+            break;
+        case 0x1f:
+            // optional hyphen
+            pStr = "\\-";
+            break;
+        default:
+            if (c >= ' ' && c <= '~')
+                aBuf.append((sal_Char)c);
+            else {
+                OUString sBuf(&c, 1);
+                OString sConverted;
+                sBuf.convertToString(&sConverted, eDestEnc, OUSTRING_TO_OSTRING_CVTFLAGS);
+                const sal_Int32 nLen = sConverted.getLength();
+
+                if (pUCMode)
+                {
+                    if (*pUCMode != nLen)
+                    {
+                        aBuf.append("\\uc");
+                        aBuf.append((sal_Int32)nLen);
+                        // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.
+                        aBuf.append(' ');
+                        *pUCMode = nLen;
+                    }
+                    aBuf.append("\\u");
+                    aBuf.append((sal_Int32)c);
+                }
+
+                for (sal_Int32 nI = 0; nI < nLen; ++nI)
+                {
+                    aBuf.append("\\'");
+                    aBuf.append(OutHex(sConverted.getStr()[nI], 2));
+                }
+            }
+    }
+    if (pStr) {
+        aBuf.append(pStr);
+        switch (c)
+        {
+            case 0xa0:
+            case 0x1e:
+            case 0x1f:
+                break;
+            default:
+                aBuf.append(' ');
+        }
+    }
+    return aBuf.makeStringAndClear();
+}
+
+OString OutString(const String &rStr, rtl_TextEncoding eDestEnc)
+{
+    SAL_INFO("filter.ms", OSL_THIS_FUNC << ", rStr = '" << OUString(rStr) << "'");
+    OStringBuffer aBuf;
+    int nUCMode = 1;
+    for (xub_StrLen n = 0; n < rStr.Len(); ++n)
+        aBuf.append(OutChar(rStr.GetChar(n), &nUCMode, eDestEnc));
+    if (nUCMode != 1) {
+        aBuf.append(OOO_STRING_SVTOOLS_RTF_UC);
+        aBuf.append((sal_Int32)1);
+        aBuf.append(" "); // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.;
+    }
+    return aBuf.makeStringAndClear();
+}
+
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */