writerperfect/source/common/DocumentHandler.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   6  *
   7  * For further information visit http://libwpd.sourceforge.net
   8  */
   9
  10 #include <DocumentHandler.hxx>
  11
  12 #include <string.h>
  13
  14 #include <com/sun/star/uno/Reference.hxx>
  15 #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
  16 #include <com/sun/star/xml/sax/XAttributeList.hpp>
  17
  18 #include <xmloff/attrlist.hxx>
  19 #include <xmloff/xmlimp.hxx>
  20
  21 namespace writerperfect
  22 {
  23 const unsigned char librvng_utf8_skip_data[256]
  24     = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  25         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  26         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  27         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  28         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  29         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  30         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  31         2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
  32         3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 1, 1 };
  33
  34 static const char* librvng_utf8_next_char(const char* p)
  35 {
  36     return p + librvng_utf8_skip_data[*reinterpret_cast<unsigned char const*>(p)];
  37 }
  38
  39 static void unescapeXML(const char* s, const unsigned long sz, librevenge::RVNGString& res)
  40 {
  41     const char* p = s;
  42     const char* const end = p + sz;
  43     while (p != end)
  44     {
  45         const char* const next = librvng_utf8_next_char(p);
  46         if (next > end)
  47         {
  48             // oops, the string is invalid
  49             break;
  50         }
  51         if (p + 4 <= end && p + 1 == next && *p == '&')
  52         {
  53             // look for &amp; , &lt; , &gt; , &apos; , &quot;
  54             bool escapedChar = false;
  55             switch (*(p + 1))
  56             {
  57                 case 'a':
  58                     if (p + 5 <= end && strncmp(p, "&amp;", 5) == 0)
  59                     {
  60                         res.append('&');
  61                         p += 5;
  62                         escapedChar = true;
  63                     }
  64                     else if (p + 6 <= end && strncmp(p, "&apos;", 6) == 0)
  65                     {
  66                         res.append('\'');
  67                         p += 6;
  68                         escapedChar = true;
  69                     }
  70                     break;
  71                 case 'g':
  72                     if (strncmp(p, "&gt;", 4) == 0)
  73                     {
  74                         res.append('>');
  75                         p += 4;
  76                         escapedChar = true;
  77                     }
  78                     break;
  79                 case 'l':
  80                     if (strncmp(p, "&lt;", 4) == 0)
  81                     {
  82                         res.append('<');
  83                         p += 4;
  84                         escapedChar = true;
  85                     }
  86                     break;
  87                 case 'q':
  88                     if (p + 6 <= end && strncmp(p, "&quot;", 6) == 0)
  89                     {
  90                         res.append('"');
  91                         p += 6;
  92                         escapedChar = true;
  93                     }
  94                     break;
  95                 default:
  96                     break;
  97             }
  98             if (escapedChar)
  99                 continue;
 100         }
 101
 102         while (p != next)
 103         {
 104             res.append(*p);
 105             ++p;
 106         }
 107         p = next;
 108     }
 109 }
 110
 111 using com::sun::star::uno::Reference;
 112 using com::sun::star::xml::sax::XAttributeList;
 113 using com::sun::star::xml::sax::XDocumentHandler;
 114
 115 DocumentHandler::DocumentHandler(Reference<XDocumentHandler> const& xHandler)
 116     : mxHandler(xHandler)
 117 {
 118     if (SvXMLImport* pFastHandler = dynamic_cast<SvXMLImport*>(mxHandler.get()))
 119         mxHandler.set(new SvXMLLegacyToFastDocHandler(pFastHandler));
 120 }
 121
 122 void DocumentHandler::startDocument() { mxHandler->startDocument(); }
 123
 124 void DocumentHandler::endDocument() { mxHandler->endDocument(); }
 125
 126 void DocumentHandler::startElement(const char* psName,
 127                                    const librevenge::RVNGPropertyList& xPropList)
 128 {
 129     SvXMLAttributeList* pAttrList = new SvXMLAttributeList();
 130     Reference<XAttributeList> xAttrList(pAttrList);
 131     librevenge::RVNGPropertyList::Iter i(xPropList);
 132     for (i.rewind(); i.next();)
 133     {
 134         // filter out librevenge elements
 135         if (strncmp(i.key(), "librevenge", 10) != 0)
 136         {
 137             size_t keyLength = strlen(i.key());
 138             OUString sName(i.key(), keyLength, RTL_TEXTENCODING_UTF8);
 139             OUString sValue(i()->getStr().cstr(), i()->getStr().len(), RTL_TEXTENCODING_UTF8);
 140
 141             // libodfgen xml-encodes some attribute's value, so check if the value is encoded or not
 142             for (int j = 0; j < 9; ++j)
 143             {
 144                 // list of the encoded attributes followed by their lengths
 145                 static char const* listEncoded[9]
 146                     = { "draw:name",        "svg:font-family",  "style:condition",
 147                         "style:num-prefix", "style:num-suffix", "table:formula",
 148                         "text:bullet-char", "text:label",       "xlink:href" };
 149                 static size_t const listEncodedLength[9] = { 9, 15, 15, 16, 16, 13, 16, 10, 10 };
 150                 if (keyLength == listEncodedLength[j]
 151                     && strncmp(i.key(), listEncoded[j], keyLength) == 0)
 152                 {
 153                     librevenge::RVNGString decodedValue("");
 154                     unescapeXML(i()->getStr().cstr(),
 155                                 static_cast<unsigned long>(i()->getStr().len()), decodedValue);
 156                     sValue
 157                         = OUString(decodedValue.cstr(), decodedValue.len(), RTL_TEXTENCODING_UTF8);
 158                     break;
 159                 }
 160             }
 161             pAttrList->AddAttribute(sName, sValue);
 162         }
 163     }
 164
 165     OUString sElementName(psName, strlen(psName), RTL_TEXTENCODING_UTF8);
 166     mxHandler->startElement(sElementName, xAttrList);
 167 }
 168
 169 void DocumentHandler::endElement(const char* psName)
 170 {
 171     OUString sElementName(psName, strlen(psName), RTL_TEXTENCODING_UTF8);
 172     mxHandler->endElement(sElementName);
 173 }
 174
 175 void DocumentHandler::characters(const librevenge::RVNGString& sCharacters)
 176 {
 177     OUString sCharU16(sCharacters.cstr(), strlen(sCharacters.cstr()), RTL_TEXTENCODING_UTF8);
 178     mxHandler->characters(sCharU16);
 179 }
 180 }
 181
 182 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */