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
  20 namespace writerperfect
  21 {
  22
  23 static const unsigned char librvng_utf8_skip_data[256] =
  24 {
  25     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  26     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  27     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  28     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  29     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  30     1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
  31     2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
  32     3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1
  33 };
  34
  35 #define librvng_utf8_next_char(p) ((p) + librvng_utf8_skip_data[*reinterpret_cast<unsigned char const *>(p)])
  36
  37 static void unescapeXML(const char *s, const unsigned long sz, librevenge::RVNGString &res)
  38 {
  39     const char *p = s;
  40     const char *const end = p + sz;
  41     while (p != end)
  42     {
  43         const char *const next = librvng_utf8_next_char(p);
  44         if (next > end)
  45         {
  46             // oops, the string is invalid
  47             break;
  48         }
  49         if (p+4 <= end && p+1==next && *p=='&')
  50         {
  51             // look for &amp; , &lt; , &gt; , &apos; , &quot;
  52             bool escapedChar=false;
  53             switch (*(p+1))
  54             {
  55             case 'a':
  56                 if (p+5 <= end && strncmp(p,"&amp;",5)==0)
  57                 {
  58                     res.append('&');
  59                     p+=5;
  60                     escapedChar=true;
  61                 }
  62                 else if (p+6 <= end && strncmp(p,"&apos;",6)==0)
  63                 {
  64                     res.append('\'');
  65                     p+=6;
  66                     escapedChar=true;
  67                 }
  68                 break;
  69             case 'g':
  70                 if (strncmp(p,"&gt;",4)==0)
  71                 {
  72                     res.append('>');
  73                     p+=4;
  74                     escapedChar=true;
  75                 }
  76                 break;
  77             case 'l':
  78                 if (strncmp(p,"&lt;",4)==0)
  79                 {
  80                     res.append('<');
  81                     p+=4;
  82                     escapedChar=true;
  83                 }
  84                 break;
  85             case 'q':
  86                 if (p+6 <= end && strncmp(p,"&quot;",6)==0)
  87                 {
  88                     res.append('"');
  89                     p+=6;
  90                     escapedChar=true;
  91                 }
  92                 break;
  93             default:
  94                 break;
  95             }
  96             if (escapedChar) continue;
  97         }
  98
  99         while (p != next)
 100         {
 101             res.append(*p);
 102             ++p;
 103         }
 104         p = next;
 105     }
 106 }
 107
 108 using com::sun::star::uno::Reference;
 109 using com::sun::star::xml::sax::XAttributeList;
 110 using com::sun::star::xml::sax::XDocumentHandler;
 111
 112 DocumentHandler::DocumentHandler(Reference < XDocumentHandler > &xHandler) :
 113     mxHandler(xHandler)
 114 {
 115 }
 116
 117 void DocumentHandler::startDocument()
 118 {
 119     mxHandler->startDocument();
 120 }
 121
 122 void DocumentHandler::endDocument()
 123 {
 124     mxHandler->endDocument();
 125 }
 126
 127 void DocumentHandler::startElement(const char *psName, 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(), strlen(i()->getStr().cstr()), 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                 {
 147                     "draw:name", "svg:font-family", "style:condition", "style:num-prefix", "style:num-suffix",
 148                     "table:formula", "text:bullet-char", "text:label", "xlink:href"
 149                 };
 150                 static size_t const(listEncodedLength[9])= {9,15,15,16,16,13,16,10,10};
 151                 if (keyLength==listEncodedLength[j] && strncmp(i.key(), listEncoded[j], keyLength)==0)
 152                 {
 153                     librevenge::RVNGString decodedValue("");
 154                     unescapeXML(i()->getStr().cstr(), (unsigned long) strlen(i()->getStr().cstr()), decodedValue);
 155                     sValue=OUString(decodedValue.cstr(), strlen(decodedValue.cstr()), RTL_TEXTENCODING_UTF8);
 156                     break;
 157                 }
 158             }
 159             pAttrList->AddAttribute(sName, sValue);
 160         }
 161     }
 162
 163     OUString sElementName(psName, strlen(psName), RTL_TEXTENCODING_UTF8);
 164     mxHandler->startElement(sElementName, xAttrList);
 165 }
 166
 167 void DocumentHandler::endElement(const char *psName)
 168 {
 169     OUString sElementName(psName, strlen(psName), RTL_TEXTENCODING_UTF8);
 170     mxHandler->endElement(sElementName);
 171 }
 172
 173 void DocumentHandler::characters(const librevenge::RVNGString &sCharacters)
 174 {
 175     OUString sCharU16(sCharacters.cstr(), strlen(sCharacters.cstr()), RTL_TEXTENCODING_UTF8);
 176     mxHandler->characters(sCharU16);
 177 }
 178
 179 }
 180
 181 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */