summaryrefslogtreecommitdiffstats
path: root/sax/source/expatwrap/saxwriter.cxx
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sax/source/expatwrap/saxwriter.cxx1486
1 files changed, 1486 insertions, 0 deletions
diff --git a/sax/source/expatwrap/saxwriter.cxx b/sax/source/expatwrap/saxwriter.cxx
new file mode 100644
index 000000000..e19a31211
--- /dev/null
+++ b/sax/source/expatwrap/saxwriter.cxx
@@ -0,0 +1,1486 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <string.h>
+
+#include <cassert>
+#include <set>
+#include <stack>
+#include <vector>
+
+#include <com/sun/star/io/IOException.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/util/XCloneable.hpp>
+#include <com/sun/star/xml/sax/SAXInvalidCharacterException.hpp>
+#include <com/sun/star/xml/sax/XWriter.hpp>
+
+#include <cppuhelper/exc_hlp.hxx>
+#include <cppuhelper/weak.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+#include <osl/diagnose.h>
+#include <rtl/character.hxx>
+#include <sal/log.hxx>
+
+using namespace ::std;
+using namespace ::osl;
+using namespace ::cppu;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::xml::sax;
+using namespace ::com::sun::star::util;
+using namespace ::com::sun::star::io;
+
+#include <memory>
+
+#define LINEFEED 10
+#define SEQUENCESIZE 1024
+#define MAXCOLUMNCOUNT 72
+
+/******
+*
+*
+* Character conversion functions
+*
+*
+*****/
+
+namespace
+{
+enum SaxInvalidCharacterError
+{
+ SAX_NONE,
+ SAX_WARNING,
+ SAX_ERROR
+};
+
+// Stuff for custom entity names
+struct ReplacementPair
+{
+ OUString name;
+ OUString replacement;
+};
+inline bool operator<(const ReplacementPair& lhs, const ReplacementPair& rhs)
+{
+ return lhs.replacement.compareTo(rhs.replacement) < 0;
+}
+
+class SaxWriterHelper
+{
+#ifdef DBG_UTIL
+public:
+ ::std::stack<OUString> m_DebugStartedElements;
+#endif
+
+private:
+ Reference<XOutputStream> m_out;
+ Sequence<sal_Int8> m_Sequence;
+ sal_Int8* mp_Sequence;
+
+ sal_Int32 nLastLineFeedPos; // is negative after writing a sequence
+ sal_uInt32 nCurrentPos;
+ bool m_bStartElementFinished;
+
+ std::vector<ReplacementPair> m_Replacements;
+
+ /// @throws SAXException
+ sal_uInt32 writeSequence();
+
+ // use only if to insert the bytes more space in the sequence is needed and
+ // so the sequence has to write out and reset rPos to 0
+ // writes sequence only on overflow, sequence could be full on the end (rPos == SEQUENCESIZE)
+ /// @throws SAXException
+ void AddBytes(sal_Int8* pTarget, sal_uInt32& rPos, const sal_Int8* pBytes,
+ sal_uInt32 nBytesCount);
+ /// @throws SAXException
+ bool convertToXML(const sal_Unicode* pStr, sal_Int32 nStrLen, bool bDoNormalization,
+ bool bNormalizeWhitespace, sal_Int8* pTarget, sal_uInt32& rPos);
+ /// @throws SAXException
+ void FinishStartElement();
+
+ // Search for the correct replacement
+ const ReplacementPair* findXMLReplacement(const sal_Unicode* pStr, sal_Int32 nStrLen);
+
+public:
+ explicit SaxWriterHelper(Reference<XOutputStream> const& m_TempOut)
+ : m_out(m_TempOut)
+ , m_Sequence(SEQUENCESIZE)
+ , mp_Sequence(nullptr)
+ , nLastLineFeedPos(0)
+ , nCurrentPos(0)
+ , m_bStartElementFinished(true)
+ {
+ OSL_ENSURE(SEQUENCESIZE > 50, "Sequence cache size too small");
+ mp_Sequence = m_Sequence.getArray();
+ }
+ ~SaxWriterHelper()
+ {
+ OSL_ENSURE(!nCurrentPos, "cached Sequence not written");
+ OSL_ENSURE(m_bStartElementFinished, "StartElement not completely written");
+ }
+
+ /// @throws SAXException
+ void insertIndentation(sal_uInt32 m_nLevel);
+
+ // returns whether it works correct or invalid characters were in the string
+ // If there are invalid characters in the string it returns sal_False.
+ // Than the calling method has to throw the needed Exception.
+ /// @throws SAXException
+ bool writeString(const OUString& rWriteOutString, bool bDoNormalization,
+ bool bNormalizeWhitespace);
+
+ sal_uInt32 GetLastColumnCount() const noexcept
+ {
+ return static_cast<sal_uInt32>(nCurrentPos - nLastLineFeedPos);
+ }
+
+ /// @throws SAXException
+ void startDocument();
+
+ // returns whether it works correct or invalid characters were in the strings
+ // If there are invalid characters in one of the strings it returns sal_False.
+ // Than the calling method has to throw the needed Exception.
+ /// @throws SAXException
+ SaxInvalidCharacterError startElement(const OUString& rName,
+ const Reference<XAttributeList>& xAttribs);
+ /// @throws SAXException
+ bool FinishEmptyElement();
+
+ // returns whether it works correct or invalid characters were in the string
+ // If there are invalid characters in the string it returns sal_False.
+ // Than the calling method has to throw the needed Exception.
+ /// @throws SAXException
+ bool endElement(const OUString& rName);
+ /// @throws SAXException
+ void endDocument();
+
+ // returns whether it works correct or invalid characters were in the strings
+ // If there are invalid characters in the string it returns sal_False.
+ // Than the calling method has to throw the needed Exception.
+ /// @throws SAXException
+ bool processingInstruction(const OUString& rTarget, const OUString& rData);
+ /// @throws SAXException
+ void startCDATA();
+ /// @throws SAXException
+ void endCDATA();
+
+ // returns whether it works correct or invalid characters were in the strings
+ // If there are invalid characters in the string it returns sal_False.
+ // Than the calling method has to throw the needed Exception.
+ /// @throws SAXException
+ bool comment(const OUString& rComment);
+
+ /// @throws SAXException
+ void clearBuffer();
+
+ // Use custom entity names
+ void setCustomEntityNames(
+ const ::css::uno::Sequence<::css::beans::Pair<::rtl::OUString, ::rtl::OUString>>&
+ replacements);
+
+ // Calculate length for convertToXML
+ sal_Int32 calcXMLByteLength(const OUString& rStr, bool bDoNormalization,
+ bool bNormalizeWhitespace);
+};
+
+const bool g_bValidCharsBelow32[32] = {
+ // clang-format off
+// 0 1 2 3 4 5 6 7
+ false, false, false, false, false, false, false, false, //0
+ false, true, true, false, false, true, false, false, //8
+ false, false, false, false, false, false, false, false, //16
+ false, false, false, false, false, false, false, false
+ // clang-format on
+};
+
+bool IsInvalidChar(const sal_Unicode aChar)
+{
+ bool bRet(false);
+ // check first for the most common characters
+ if (aChar < 32 || aChar >= 0xd800)
+ bRet = ((aChar < 32 && !g_bValidCharsBelow32[aChar]) || aChar == 0xffff || aChar == 0xfffe);
+ return bRet;
+}
+
+/********
+* write through to the output stream
+*
+*****/
+sal_uInt32 SaxWriterHelper::writeSequence()
+{
+ try
+ {
+ m_out->writeBytes(m_Sequence);
+ }
+ catch (const IOException&)
+ {
+ css::uno::Any anyEx = cppu::getCaughtException();
+ throw SAXException("IO exception during writing", Reference<XInterface>(), anyEx);
+ }
+ nLastLineFeedPos -= SEQUENCESIZE;
+ return 0;
+}
+
+void SaxWriterHelper::AddBytes(sal_Int8* pTarget, sal_uInt32& rPos, const sal_Int8* pBytes,
+ sal_uInt32 nBytesCount)
+{
+ OSL_ENSURE((rPos + nBytesCount) > SEQUENCESIZE, "wrong use of AddBytesMethod");
+ sal_uInt32 nCount(SEQUENCESIZE - rPos);
+ memcpy(&(pTarget[rPos]), pBytes, nCount);
+
+ OSL_ENSURE(rPos + nCount == SEQUENCESIZE, "the position should be the at the end");
+
+ rPos = writeSequence();
+ sal_uInt32 nRestCount(nBytesCount - nCount);
+ if ((rPos + nRestCount) <= SEQUENCESIZE)
+ {
+ memcpy(&(pTarget[rPos]), &pBytes[nCount], nRestCount);
+ rPos += nRestCount;
+ }
+ else
+ AddBytes(pTarget, rPos, &pBytes[nCount], nRestCount);
+}
+
+void SaxWriterHelper::setCustomEntityNames(
+ const ::css::uno::Sequence<::css::beans::Pair<::rtl::OUString, ::rtl::OUString>>& replacements)
+{
+ m_Replacements.resize(replacements.size());
+ for (size_t i = 0; i < replacements.size(); ++i)
+ {
+ m_Replacements[i].name = replacements[i].First;
+ m_Replacements[i].replacement = replacements[i].Second;
+ }
+ if (replacements.size() > 1)
+ std::sort(m_Replacements.begin(), m_Replacements.end());
+}
+
+/** Converts a UTF-16 string to UTF-8 and does XML normalization
+
+ @param pTarget
+ Pointer to a piece of memory, to where the output should be written. The caller
+ must call calcXMLByteLength on the same string, to ensure,
+ that there is enough memory for converting.
+ */
+bool SaxWriterHelper::convertToXML(const sal_Unicode* pStr, sal_Int32 nStrLen,
+ bool bDoNormalization, bool bNormalizeWhitespace,
+ sal_Int8* pTarget, sal_uInt32& rPos)
+{
+ bool bRet(true);
+ sal_uInt32 nSurrogate = 0;
+
+ for (sal_Int32 i = 0; i < nStrLen; i++)
+ {
+ sal_Unicode c = pStr[i];
+ if (IsInvalidChar(c))
+ bRet = false;
+ else if ((c >= 0x0001) && (c <= 0x007F)) // Deal with ascii
+ {
+ if (bDoNormalization)
+ {
+ switch (c)
+ {
+ case '&': // resemble to &amp;
+ {
+ if ((rPos + 5) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&amp;"), 5);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&amp;", 5);
+ rPos += 5;
+ }
+ }
+ break;
+ case '<':
+ {
+ if ((rPos + 4) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&lt;"), 4);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&lt;", 4);
+ rPos += 4; // &lt;
+ }
+ }
+ break;
+ case '>':
+ {
+ if ((rPos + 4) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&gt;"), 4);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&gt;", 4);
+ rPos += 4; // &gt;
+ }
+ }
+ break;
+ case '\'':
+ {
+ if ((rPos + 6) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&apos;"), 6);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&apos;", 6);
+ rPos += 6; // &apos;
+ }
+ }
+ break;
+ case '"':
+ {
+ if ((rPos + 6) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&quot;"), 6);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&quot;", 6);
+ rPos += 6; // &quot;
+ }
+ }
+ break;
+ case 13:
+ {
+ if ((rPos + 6) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&#x0d;"), 6);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&#x0d;", 6);
+ rPos += 6;
+ }
+ }
+ break;
+ case LINEFEED:
+ {
+ if (bNormalizeWhitespace)
+ {
+ if ((rPos + 6) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&#x0a;"),
+ 6);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&#x0a;", 6);
+ rPos += 6;
+ }
+ }
+ else
+ {
+ pTarget[rPos] = LINEFEED;
+ nLastLineFeedPos = rPos;
+ rPos++;
+ }
+ }
+ break;
+ case 9:
+ {
+ if (bNormalizeWhitespace)
+ {
+ if ((rPos + 6) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>("&#x09;"),
+ 6);
+ else
+ {
+ memcpy(&(pTarget[rPos]), "&#x09;", 6);
+ rPos += 6;
+ }
+ }
+ else
+ {
+ pTarget[rPos] = 9;
+ rPos++;
+ }
+ }
+ break;
+ default:
+ {
+ pTarget[rPos] = static_cast<sal_Int8>(c);
+ rPos++;
+ }
+ break;
+ }
+ }
+ else
+ {
+ pTarget[rPos] = static_cast<sal_Int8>(c);
+ if (static_cast<sal_Int8>(c) == LINEFEED)
+ nLastLineFeedPos = rPos;
+ rPos++;
+ }
+ }
+ else
+ {
+ // Deal with replacements
+ if (bDoNormalization && !m_Replacements.empty())
+ {
+ // search
+ const ReplacementPair* it = findXMLReplacement(&pStr[i], nStrLen - i);
+
+ // replace
+ if (it != nullptr)
+ {
+ OString name = ::rtl::OUStringToOString(it->name, RTL_TEXTENCODING_UTF8);
+ if (rPos + name.getLength() > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, reinterpret_cast<sal_Int8 const*>(name.getStr()),
+ name.getLength());
+ else
+ {
+ memcpy(&(pTarget[rPos]), name.getStr(), name.getLength());
+ rPos += name.getLength();
+ }
+ i += it->replacement.getLength() - 1;
+ continue;
+ }
+ }
+
+ // Deal with other unicode cases
+ if (rtl::isHighSurrogate(c))
+ {
+ // 1. surrogate: save (until 2. surrogate)
+ if (nSurrogate != 0) // left-over lone 1st Unicode surrogate
+ {
+ OSL_FAIL("left-over Unicode surrogate");
+ bRet = false;
+ }
+ nSurrogate = c;
+ }
+ else if (rtl::isLowSurrogate(c))
+ {
+ // 2. surrogate: write as UTF-8
+ if (nSurrogate) // can only be 1st surrogate
+ {
+ nSurrogate = rtl::combineSurrogates(nSurrogate, c);
+ sal_Int8 aBytes[] = { sal_Int8(0xF0 | ((nSurrogate >> 18) & 0x0F)),
+ sal_Int8(0x80 | ((nSurrogate >> 12) & 0x3F)),
+ sal_Int8(0x80 | ((nSurrogate >> 6) & 0x3F)),
+ sal_Int8(0x80 | ((nSurrogate >> 0) & 0x3F)) };
+ if ((rPos + 4) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, aBytes, 4);
+ else
+ {
+ pTarget[rPos] = aBytes[0];
+ rPos++;
+ pTarget[rPos] = aBytes[1];
+ rPos++;
+ pTarget[rPos] = aBytes[2];
+ rPos++;
+ pTarget[rPos] = aBytes[3];
+ rPos++;
+ }
+ }
+ else // lone 2nd surrogate
+ {
+ OSL_FAIL("illegal Unicode character");
+ bRet = false;
+ }
+
+ // reset surrogate
+ nSurrogate = 0;
+ }
+ else if (c > 0x07FF)
+ {
+ sal_Int8 aBytes[]
+ = { sal_Int8(0xE0 | ((c >> 12) & 0x0F)), sal_Int8(0x80 | ((c >> 6) & 0x3F)),
+ sal_Int8(0x80 | ((c >> 0) & 0x3F)) };
+ if ((rPos + 3) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, aBytes, 3);
+ else
+ {
+ pTarget[rPos] = aBytes[0];
+ rPos++;
+ pTarget[rPos] = aBytes[1];
+ rPos++;
+ pTarget[rPos] = aBytes[2];
+ rPos++;
+ }
+ }
+ else
+ {
+ sal_Int8 aBytes[]
+ = { sal_Int8(0xC0 | ((c >> 6) & 0x1F)), sal_Int8(0x80 | ((c >> 0) & 0x3F)) };
+ if ((rPos + 2) > SEQUENCESIZE)
+ AddBytes(pTarget, rPos, aBytes, 2);
+ else
+ {
+ pTarget[rPos] = aBytes[0];
+ rPos++;
+ pTarget[rPos] = aBytes[1];
+ rPos++;
+ }
+ }
+ }
+
+ OSL_ENSURE(rPos <= SEQUENCESIZE, "not reset current position");
+ if (rPos == SEQUENCESIZE)
+ rPos = writeSequence();
+
+ // reset left-over surrogate
+ if ((nSurrogate != 0) && !rtl::isHighSurrogate(c))
+ {
+ OSL_FAIL("left-over Unicode surrogate");
+ nSurrogate = 0;
+ bRet = false;
+ }
+ }
+ if (nSurrogate != 0) // trailing lone 1st surrogate
+ {
+ OSL_FAIL("left-over Unicode surrogate");
+ bRet = false;
+ }
+ return bRet;
+}
+
+void SaxWriterHelper::FinishStartElement()
+{
+ if (!m_bStartElementFinished)
+ {
+ mp_Sequence[nCurrentPos] = '>';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ m_bStartElementFinished = true;
+ }
+}
+
+void SaxWriterHelper::insertIndentation(sal_uInt32 m_nLevel)
+{
+ FinishStartElement();
+ if (m_nLevel > 0)
+ {
+ if ((nCurrentPos + m_nLevel + 1) <= SEQUENCESIZE)
+ {
+ mp_Sequence[nCurrentPos] = LINEFEED;
+ nLastLineFeedPos = nCurrentPos;
+ nCurrentPos++;
+ memset(&(mp_Sequence[nCurrentPos]), 32, m_nLevel);
+ nCurrentPos += m_nLevel;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ }
+ else
+ {
+ sal_uInt32 nCount(m_nLevel + 1);
+ std::unique_ptr<sal_Int8[]> pBytes(new sal_Int8[nCount]);
+ pBytes[0] = LINEFEED;
+ memset(&(pBytes[1]), 32, m_nLevel);
+ AddBytes(mp_Sequence, nCurrentPos, pBytes.get(), nCount);
+ pBytes.reset();
+ nLastLineFeedPos = nCurrentPos - nCount;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ }
+ }
+ else
+ {
+ mp_Sequence[nCurrentPos] = LINEFEED;
+ nLastLineFeedPos = nCurrentPos;
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ }
+}
+
+bool SaxWriterHelper::writeString(const OUString& rWriteOutString, bool bDoNormalization,
+ bool bNormalizeWhitespace)
+{
+ FinishStartElement();
+ return convertToXML(rWriteOutString.getStr(), rWriteOutString.getLength(), bDoNormalization,
+ bNormalizeWhitespace, mp_Sequence, nCurrentPos);
+}
+
+void SaxWriterHelper::startDocument()
+{
+ const char pc[] = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
+ const int nLen = strlen(pc);
+ if ((nCurrentPos + nLen) <= SEQUENCESIZE)
+ {
+ memcpy(mp_Sequence, pc, nLen);
+ nCurrentPos += nLen;
+ }
+ else
+ {
+ AddBytes(mp_Sequence, nCurrentPos, reinterpret_cast<sal_Int8 const*>(pc), nLen);
+ }
+ OSL_ENSURE(nCurrentPos <= SEQUENCESIZE, "not reset current position");
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = LINEFEED;
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+}
+
+#ifndef NDEBUG
+bool inrange(sal_Unicode c, sal_Unicode start, sal_Unicode end) { return c >= start && c <= end; }
+#endif
+
+void CheckValidName(OUString const& rName)
+{
+#ifdef NDEBUG
+ (void)rName;
+#else
+ assert(!rName.isEmpty());
+ bool hasColon(false);
+ for (sal_Int32 i = 0; i < rName.getLength(); ++i)
+ {
+ auto const c(rName[i]);
+ if (c == ':')
+ {
+ // see https://www.w3.org/TR/REC-xml-names/#ns-qualnames
+ SAL_WARN_IF(hasColon, "sax", "only one colon allowed: " << rName);
+ assert(!hasColon && "only one colon allowed");
+ hasColon = true;
+ }
+ else if (!rtl::isAsciiAlphanumeric(c) && c != '_' && c != '-' && c != '.'
+ && !inrange(c, 0x00C0, 0x00D6) && !inrange(c, 0x00D8, 0x00F6)
+ && !inrange(c, 0x00F8, 0x02FF) && !inrange(c, 0x0370, 0x037D)
+ && !inrange(c, 0x037F, 0x1FFF) && !inrange(c, 0x200C, 0x200D)
+ && !inrange(c, 0x2070, 0x218F) && !inrange(c, 0x2C00, 0x2FEF)
+ && !inrange(c, 0x3001, 0xD7FF) && !inrange(c, 0xF900, 0xFDCF)
+ && !inrange(c, 0xFDF0, 0xFFFD) && c != 0x00B7 && !inrange(c, 0x0300, 0x036F)
+ && !inrange(c, 0x203F, 0x2040))
+ {
+ // https://www.w3.org/TR/xml11/#NT-NameChar
+ // (currently we don't warn about invalid start chars)
+ SAL_WARN("sax", "unexpected character in attribute name: " << rName);
+ assert(!"unexpected character in attribute name");
+ }
+ }
+#endif
+}
+
+SaxInvalidCharacterError SaxWriterHelper::startElement(const OUString& rName,
+ const Reference<XAttributeList>& xAttribs)
+{
+ FinishStartElement();
+
+#ifdef DBG_UTIL
+ m_DebugStartedElements.push(rName);
+ ::std::set<OUString> DebugAttributes;
+#endif
+
+ mp_Sequence[nCurrentPos] = '<';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ SaxInvalidCharacterError eRet(SAX_NONE);
+ CheckValidName(rName);
+ if (!writeString(rName, false, false))
+ eRet = SAX_ERROR;
+
+ sal_Int16 nAttribCount = xAttribs.is() ? xAttribs->getLength() : 0;
+ for (sal_Int16 i = 0; i < nAttribCount; i++)
+ {
+ mp_Sequence[nCurrentPos] = ' ';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ OUString const& rAttrName(xAttribs->getNameByIndex(i));
+#ifdef DBG_UTIL
+ // Well-formedness constraint: Unique Att Spec
+ assert(DebugAttributes.find(rAttrName) == DebugAttributes.end());
+ DebugAttributes.insert(rAttrName);
+#endif
+ CheckValidName(rAttrName);
+ if (!writeString(rAttrName, false, false))
+ eRet = SAX_ERROR;
+
+ mp_Sequence[nCurrentPos] = '=';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '"';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ if (!writeString(xAttribs->getValueByIndex(i), true, true) && eRet != SAX_ERROR)
+ eRet = SAX_WARNING;
+
+ mp_Sequence[nCurrentPos] = '"';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ }
+
+ m_bStartElementFinished = false; // because the '>' character is not added,
+ // because it is possible, that the "/>"
+ // characters have to add
+ return eRet;
+}
+
+bool SaxWriterHelper::FinishEmptyElement()
+{
+ if (m_bStartElementFinished)
+ return false;
+
+ mp_Sequence[nCurrentPos] = '/';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '>';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ m_bStartElementFinished = true;
+
+ return true;
+}
+
+bool SaxWriterHelper::endElement(const OUString& rName)
+{
+ FinishStartElement();
+
+ mp_Sequence[nCurrentPos] = '<';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '/';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ CheckValidName(rName);
+ bool bRet(writeString(rName, false, false));
+
+ mp_Sequence[nCurrentPos] = '>';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ return bRet;
+}
+
+void SaxWriterHelper::endDocument()
+{
+ if (nCurrentPos > 0)
+ {
+ m_Sequence.realloc(nCurrentPos);
+ nCurrentPos = writeSequence();
+ //m_Sequence.realloc(SEQUENCESIZE);
+ }
+}
+
+void SaxWriterHelper::clearBuffer()
+{
+ FinishStartElement();
+ if (nCurrentPos > 0)
+ {
+ m_Sequence.realloc(nCurrentPos);
+ nCurrentPos = writeSequence();
+ m_Sequence.realloc(SEQUENCESIZE);
+ // Be sure to update the array pointer after the reallocation.
+ mp_Sequence = m_Sequence.getArray();
+ }
+}
+
+bool SaxWriterHelper::processingInstruction(const OUString& rTarget, const OUString& rData)
+{
+ FinishStartElement();
+ mp_Sequence[nCurrentPos] = '<';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '?';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ bool bRet(writeString(rTarget, false, false));
+
+ mp_Sequence[nCurrentPos] = ' ';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ if (!writeString(rData, false, false))
+ bRet = false;
+
+ mp_Sequence[nCurrentPos] = '?';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '>';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ return bRet;
+}
+
+void SaxWriterHelper::startCDATA()
+{
+ FinishStartElement();
+ if ((nCurrentPos + 9) <= SEQUENCESIZE)
+ {
+ memcpy(&(mp_Sequence[nCurrentPos]), "<![CDATA[", 9);
+ nCurrentPos += 9;
+ }
+ else
+ AddBytes(mp_Sequence, nCurrentPos, reinterpret_cast<sal_Int8 const*>("<![CDATA["), 9);
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+}
+
+void SaxWriterHelper::endCDATA()
+{
+ FinishStartElement();
+ if ((nCurrentPos + 3) <= SEQUENCESIZE)
+ {
+ memcpy(&(mp_Sequence[nCurrentPos]), "]]>", 3);
+ nCurrentPos += 3;
+ }
+ else
+ AddBytes(mp_Sequence, nCurrentPos, reinterpret_cast<sal_Int8 const*>("]]>"), 3);
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+}
+
+bool SaxWriterHelper::comment(const OUString& rComment)
+{
+ FinishStartElement();
+ mp_Sequence[nCurrentPos] = '<';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '!';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '-';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '-';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ bool bRet(writeString(rComment, false, false));
+
+ mp_Sequence[nCurrentPos] = '-';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '-';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+ mp_Sequence[nCurrentPos] = '>';
+ nCurrentPos++;
+ if (nCurrentPos == SEQUENCESIZE)
+ nCurrentPos = writeSequence();
+
+ return bRet;
+}
+
+sal_Int32 SaxWriterHelper::calcXMLByteLength(const OUString& rStr, bool bDoNormalization,
+ bool bNormalizeWhitespace)
+{
+ sal_Int32 nOutputLength = 0;
+ sal_uInt32 nSurrogate = 0;
+
+ const sal_Unicode* pStr = rStr.getStr();
+ sal_Int32 nStrLen = rStr.getLength();
+ for (sal_Int32 i = 0; i < nStrLen; i++)
+ {
+ sal_uInt16 c = pStr[i];
+ if (!IsInvalidChar(c) && (c >= 0x0001) && (c <= 0x007F))
+ {
+ if (bDoNormalization)
+ {
+ switch (c)
+ {
+ case '&': // resemble to &amp;
+ nOutputLength += 5;
+ break;
+ case '<': // &lt;
+ case '>': // &gt;
+ nOutputLength += 4;
+ break;
+ case '\'': // &apos;
+ case '"': // &quot;
+ case 13: // &#x0d;
+ nOutputLength += 6;
+ break;
+
+ case 10: // &#x0a;
+ case 9: // &#x09;
+ if (bNormalizeWhitespace)
+ {
+ nOutputLength += 6;
+ }
+ else
+ {
+ nOutputLength++;
+ }
+ break;
+ default:
+ nOutputLength++;
+ }
+ }
+ else
+ {
+ nOutputLength++;
+ }
+ }
+ else
+ {
+ // Deal with replacements
+ if (bDoNormalization && !m_Replacements.empty())
+ {
+ // search
+ const ReplacementPair* it = findXMLReplacement(&pStr[i], nStrLen - i);
+
+ if (it != nullptr)
+ {
+ nOutputLength
+ += ::rtl::OUStringToOString(it->name, RTL_TEXTENCODING_UTF8).getLength();
+ i += it->replacement.getLength() - 1;
+ continue;
+ }
+ }
+
+ // Deal with other unicode cases
+ if (rtl::isHighSurrogate(c))
+ {
+ // save surrogate
+ nSurrogate = c;
+ }
+ else if (rtl::isLowSurrogate(c))
+ {
+ // 2. surrogate: write as UTF-8 (if range is OK
+ if (nSurrogate)
+ nOutputLength += 4;
+ nSurrogate = 0;
+ }
+ else if (c > 0x07FF)
+ {
+ nOutputLength += 3;
+ }
+ else
+ {
+ nOutputLength += 2;
+ }
+ }
+
+ // surrogate processing
+ if ((nSurrogate != 0) && !rtl::isHighSurrogate(c))
+ nSurrogate = 0;
+ }
+
+ return nOutputLength;
+}
+
+const ReplacementPair* SaxWriterHelper::findXMLReplacement(const sal_Unicode* pStr,
+ sal_Int32 nStrLen)
+{
+ for (size_t iter = 0; iter < m_Replacements.size(); ++iter)
+ {
+ if (m_Replacements[iter].replacement.getLength() > nStrLen)
+ continue;
+ sal_Int32 matches = m_Replacements[iter].replacement.compareTo(
+ std::u16string_view(pStr, m_Replacements[iter].replacement.getLength()));
+ if (matches == 0)
+ return &m_Replacements[iter];
+ if (matches > 0)
+ return nullptr;
+ }
+ return nullptr;
+}
+
+class SAXWriter : public WeakImplHelper<XWriter, XServiceInfo>
+{
+public:
+ SAXWriter()
+ : m_bDocStarted(false)
+ , m_bIsCDATA(false)
+ , m_bForceLineBreak(false)
+ , m_bAllowLineBreak(false)
+ , m_nLevel(0)
+ {
+ }
+
+public: // XActiveDataSource
+ virtual void SAL_CALL setOutputStream(const Reference<XOutputStream>& aStream) override
+ {
+ try
+ {
+ // temporary: set same stream again to clear buffer
+ if (m_out == aStream && m_pSaxWriterHelper && m_bDocStarted)
+ m_pSaxWriterHelper->clearBuffer();
+ else
+ {
+ m_out = aStream;
+ m_pSaxWriterHelper.reset(new SaxWriterHelper(m_out));
+ m_bDocStarted = false;
+ m_nLevel = 0;
+ m_bIsCDATA = false;
+ }
+ }
+ catch (const SAXException& e)
+ {
+ throw css::lang::WrappedTargetRuntimeException(
+ e.Message, static_cast<OWeakObject*>(this), e.WrappedException);
+ }
+ }
+ virtual Reference<XOutputStream> SAL_CALL getOutputStream() override { return m_out; }
+
+public: // XDocumentHandler
+ virtual void SAL_CALL startDocument() override;
+
+ virtual void SAL_CALL endDocument() override;
+
+ virtual void SAL_CALL startElement(const OUString& aName,
+ const Reference<XAttributeList>& xAttribs) override;
+
+ virtual void SAL_CALL endElement(const OUString& aName) override;
+
+ virtual void SAL_CALL characters(const OUString& aChars) override;
+
+ virtual void SAL_CALL ignorableWhitespace(const OUString& aWhitespaces) override;
+ virtual void SAL_CALL processingInstruction(const OUString& aTarget,
+ const OUString& aData) override;
+ virtual void SAL_CALL setDocumentLocator(const Reference<XLocator>& xLocator) override;
+ virtual void SAL_CALL setCustomEntityNames(
+ const ::css::uno::Sequence<::css::beans::Pair<::rtl::OUString, ::rtl::OUString>>&
+ replacements) override;
+
+public: // XExtendedDocumentHandler
+ virtual void SAL_CALL startCDATA() override;
+ virtual void SAL_CALL endCDATA() override;
+ virtual void SAL_CALL comment(const OUString& sComment) override;
+ virtual void SAL_CALL unknown(const OUString& sString) override;
+ virtual void SAL_CALL allowLineBreak() override;
+
+public: // XServiceInfo
+ OUString SAL_CALL getImplementationName() override;
+ Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+ sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+
+private:
+ sal_Int32 getIndentPrefixLength(sal_Int32 nFirstLineBreakOccurrence) noexcept;
+
+ Reference<XOutputStream> m_out;
+ std::unique_ptr<SaxWriterHelper> m_pSaxWriterHelper;
+
+ // Status information
+ bool m_bDocStarted : 1;
+ bool m_bIsCDATA : 1;
+ bool m_bForceLineBreak : 1;
+ bool m_bAllowLineBreak : 1;
+ sal_Int32 m_nLevel;
+};
+
+sal_Int32 SAXWriter::getIndentPrefixLength(sal_Int32 nFirstLineBreakOccurrence) noexcept
+{
+ sal_Int32 nLength = -1;
+ if (m_pSaxWriterHelper)
+ {
+ if (m_bForceLineBreak
+ || (m_bAllowLineBreak
+ && ((nFirstLineBreakOccurrence + m_pSaxWriterHelper->GetLastColumnCount())
+ > MAXCOLUMNCOUNT)))
+ nLength = m_nLevel;
+ }
+ m_bForceLineBreak = false;
+ m_bAllowLineBreak = false;
+ return nLength;
+}
+
+bool isFirstCharWhitespace(const sal_Unicode* p) noexcept { return *p == ' '; }
+
+// XServiceInfo
+OUString SAXWriter::getImplementationName() { return "com.sun.star.extensions.xml.sax.Writer"; }
+
+// XServiceInfo
+sal_Bool SAXWriter::supportsService(const OUString& ServiceName)
+{
+ return cppu::supportsService(this, ServiceName);
+}
+
+// XServiceInfo
+Sequence<OUString> SAXWriter::getSupportedServiceNames()
+{
+ return { "com.sun.star.xml.sax.Writer" };
+}
+
+void SAXWriter::startDocument()
+{
+ if (m_bDocStarted || !m_out.is() || !m_pSaxWriterHelper)
+ {
+ throw SAXException();
+ }
+ m_bDocStarted = true;
+ m_pSaxWriterHelper->startDocument();
+}
+
+void SAXWriter::endDocument()
+{
+ if (!m_bDocStarted)
+ {
+ throw SAXException("endDocument called before startDocument", Reference<XInterface>(),
+ Any());
+ }
+ if (m_nLevel)
+ {
+ throw SAXException("unexpected end of document", Reference<XInterface>(), Any());
+ }
+ m_pSaxWriterHelper->endDocument();
+ try
+ {
+ m_out->closeOutput();
+ }
+ catch (const IOException&)
+ {
+ css::uno::Any anyEx = cppu::getCaughtException();
+ throw SAXException("IO exception during closing the IO Stream", Reference<XInterface>(),
+ anyEx);
+ }
+}
+
+void SAXWriter::startElement(const OUString& aName, const Reference<XAttributeList>& xAttribs)
+{
+ if (!m_bDocStarted)
+ {
+ SAXException except;
+ except.Message = "startElement called before startDocument";
+ throw except;
+ }
+ if (m_bIsCDATA)
+ {
+ SAXException except;
+ except.Message = "startElement call not allowed with CDATA sections";
+ throw except;
+ }
+
+ sal_Int32 nLength(0);
+ if (m_bAllowLineBreak)
+ {
+ sal_Int32 nAttribCount = xAttribs.is() ? xAttribs->getLength() : 0;
+
+ nLength++; // "<"
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(aName, false, false); // the tag name
+
+ sal_Int16 n;
+ for (n = 0; n < static_cast<sal_Int16>(nAttribCount); n++)
+ {
+ nLength++; // " "
+ OUString tmp = xAttribs->getNameByIndex(n);
+
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(tmp, false, false);
+
+ nLength += 2; // ="
+
+ tmp = xAttribs->getValueByIndex(n);
+
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(tmp, true, true);
+
+ nLength += 1; // "
+ }
+
+ nLength++; // '>'
+ }
+
+ // Is there a new indentation necessary ?
+ sal_Int32 nPrefix(getIndentPrefixLength(nLength));
+
+ // write into sequence
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ SaxInvalidCharacterError eRet(m_pSaxWriterHelper->startElement(aName, xAttribs));
+
+ m_nLevel++;
+
+ if (eRet == SAX_WARNING)
+ {
+ SAXInvalidCharacterException except;
+ except.Message = "Invalid character during XML-Export in an attribute value";
+ throw except;
+ }
+ else if (eRet == SAX_ERROR)
+ {
+ SAXException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+void SAXWriter::endElement(const OUString& aName)
+{
+ if (!m_bDocStarted)
+ {
+ throw SAXException();
+ }
+ m_nLevel--;
+
+ if (m_nLevel < 0)
+ {
+ throw SAXException();
+ }
+ bool bRet(true);
+
+ // check here because Helper's endElement is not always called
+#ifdef DBG_UTIL
+ assert(!m_pSaxWriterHelper->m_DebugStartedElements.empty());
+ // Well-formedness constraint: Element Type Match
+ assert(aName == m_pSaxWriterHelper->m_DebugStartedElements.top());
+ m_pSaxWriterHelper->m_DebugStartedElements.pop();
+#endif
+
+ if (m_pSaxWriterHelper->FinishEmptyElement())
+ m_bForceLineBreak = false;
+ else
+ {
+ // only ascii chars allowed
+ sal_Int32 nLength(0);
+ if (m_bAllowLineBreak)
+ nLength = 3 + m_pSaxWriterHelper->calcXMLByteLength(aName, false, false);
+ sal_Int32 nPrefix = getIndentPrefixLength(nLength);
+
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ bRet = m_pSaxWriterHelper->endElement(aName);
+ }
+
+ if (!bRet)
+ {
+ SAXException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+void SAXWriter::characters(const OUString& aChars)
+{
+ if (!m_bDocStarted)
+ {
+ SAXException except;
+ except.Message = "characters method called before startDocument";
+ throw except;
+ }
+
+ bool bThrowException(false);
+ if (!aChars.isEmpty())
+ {
+ if (m_bIsCDATA)
+ bThrowException = !m_pSaxWriterHelper->writeString(aChars, false, false);
+ else
+ {
+ // Note : nFirstLineBreakOccurrence is not exact, because we don't know, how
+ // many 2 and 3 byte chars are inbetween. However this whole stuff
+ // is eitherway for pretty printing only, so it does not need to be exact.
+ sal_Int32 nLength(0);
+ sal_Int32 nIndentPrefix(-1);
+ if (m_bAllowLineBreak)
+ {
+ // returns position of first ascii 10 within the string, -1 when no 10 in string.
+ sal_Int32 nFirstLineBreakOccurrence = aChars.indexOf(LINEFEED);
+
+ nLength = m_pSaxWriterHelper->calcXMLByteLength(aChars, !m_bIsCDATA, false);
+ nIndentPrefix = getIndentPrefixLength(
+ nFirstLineBreakOccurrence >= 0 ? nFirstLineBreakOccurrence : nLength);
+ }
+ else
+ nIndentPrefix = getIndentPrefixLength(nLength);
+
+ // insert indentation
+ if (nIndentPrefix >= 0)
+ {
+ if (isFirstCharWhitespace(aChars.getStr()))
+ m_pSaxWriterHelper->insertIndentation(nIndentPrefix - 1);
+ else
+ m_pSaxWriterHelper->insertIndentation(nIndentPrefix);
+ }
+ bThrowException = !m_pSaxWriterHelper->writeString(aChars, true, false);
+ }
+ }
+ if (bThrowException)
+ {
+ SAXInvalidCharacterException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+void SAXWriter::ignorableWhitespace(const OUString&)
+{
+ if (!m_bDocStarted)
+ {
+ throw SAXException();
+ }
+
+ m_bForceLineBreak = true;
+}
+
+void SAXWriter::processingInstruction(const OUString& aTarget, const OUString& aData)
+{
+ if (!m_bDocStarted || m_bIsCDATA)
+ {
+ throw SAXException();
+ }
+
+ sal_Int32 nLength(0);
+ if (m_bAllowLineBreak)
+ {
+ nLength = 2; // "<?"
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(aTarget, false, false);
+
+ nLength += 1; // " "
+
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(aData, false, false);
+
+ nLength += 2; // "?>"
+ }
+
+ sal_Int32 nPrefix = getIndentPrefixLength(nLength);
+
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ if (!m_pSaxWriterHelper->processingInstruction(aTarget, aData))
+ {
+ SAXException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+void SAXWriter::setDocumentLocator(const Reference<XLocator>&) {}
+
+void SAXWriter::setCustomEntityNames(
+ const ::css::uno::Sequence<::css::beans::Pair<::rtl::OUString, ::rtl::OUString>>& replacements)
+{
+ m_pSaxWriterHelper->setCustomEntityNames(replacements);
+}
+
+void SAXWriter::startCDATA()
+{
+ if (!m_bDocStarted || m_bIsCDATA)
+ {
+ throw SAXException();
+ }
+
+ sal_Int32 nPrefix = getIndentPrefixLength(9);
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ m_pSaxWriterHelper->startCDATA();
+
+ m_bIsCDATA = true;
+}
+
+void SAXWriter::endCDATA()
+{
+ if (!m_bDocStarted || !m_bIsCDATA)
+ {
+ SAXException except;
+ except.Message = "endCDATA was called without startCDATA";
+ throw except;
+ }
+
+ sal_Int32 nPrefix = getIndentPrefixLength(3);
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ m_pSaxWriterHelper->endCDATA();
+
+ m_bIsCDATA = false;
+}
+
+void SAXWriter::comment(const OUString& sComment)
+{
+ if (!m_bDocStarted || m_bIsCDATA)
+ {
+ throw SAXException();
+ }
+
+ sal_Int32 nLength(0);
+ if (m_bAllowLineBreak)
+ {
+ nLength = 4; // "<!--"
+ nLength += m_pSaxWriterHelper->calcXMLByteLength(sComment, false, false);
+
+ nLength += 3;
+ }
+
+ sal_Int32 nPrefix = getIndentPrefixLength(nLength);
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ if (!m_pSaxWriterHelper->comment(sComment))
+ {
+ SAXException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+void SAXWriter::allowLineBreak()
+{
+ if (!m_bDocStarted || m_bAllowLineBreak)
+ {
+ throw SAXException();
+ }
+
+ m_bAllowLineBreak = true;
+}
+
+void SAXWriter::unknown(const OUString& sString)
+{
+ if (!m_bDocStarted)
+ {
+ throw SAXException();
+ }
+ if (m_bIsCDATA)
+ {
+ throw SAXException();
+ }
+
+ if (sString.startsWith("<?xml"))
+ return;
+
+ sal_Int32 nLength(0);
+ if (m_bAllowLineBreak)
+ nLength = m_pSaxWriterHelper->calcXMLByteLength(sString, false, false);
+
+ sal_Int32 nPrefix = getIndentPrefixLength(nLength);
+ if (nPrefix >= 0)
+ m_pSaxWriterHelper->insertIndentation(nPrefix);
+
+ if (!m_pSaxWriterHelper->writeString(sString, false, false))
+ {
+ SAXException except;
+ except.Message = "Invalid character during XML-Export";
+ throw except;
+ }
+}
+
+} // namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_extensions_xml_sax_Writer_get_implementation(css::uno::XComponentContext*,
+ css::uno::Sequence<css::uno::Any> const&)
+{
+ return cppu::acquire(new SAXWriter);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */