ExampleBSTRUTF.cpp

Example how to convert a BSTR to UTF-8 such that the string in XML would not be corrupted

Author

Evers

/* 
This file is part of the BIAS library (Basic ImageAlgorithmS).

Copyright (C) 2003-2009    (see file CONTACT for details)
  Multimediale Systeme der Informationsverarbeitung
  Institut fuer Informatik
  Christian-Albrechts-Universitaet Kiel


BIAS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

BIAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with BIAS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <Base/Common/XMLIO.hh>
#include <libxml/encoding.h>
#ifdef WIN32

#endif
using namespace BIAS;
using namespace std;


/**
   @example ExampleBSTRUTF.cpp
   @brief Example how to convert a BSTR to UTF-8 such that the string in XML would not be corrupted
   @ingroup g_examples
   @author Evers
*/

#ifdef WIN32
string ConvertBSTRToString(BSTR pSrc)
{
  DWORD cb,cwch = ::SysStringLen(pSrc);
  char *szOut = NULL;
  string result;
  cb = ::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch + 1, NULL, 0, 0, 0);
  if(cb) {
      szOut = new char[cb];
      if(szOut) {
        szOut[cb - 1] = '\0';
        if(!::WideCharToMultiByte(CP_ACP, 0,pSrc, cwch + 1, szOut, cb, 0, 0)) 
          delete []szOut; 
        else  {
          result = szOut;
          delete[] szOut;
        }
      }
  }
  return result;
}

#endif








int main (int /*argc*/, char** /*argv*/)
{  

  string MyAnsiString,MyUTF8String;
#ifdef WIN32

  BSTR MyBstr;
  MyBstr = ::SysAllocStringLen(NULL,14);
  MyBstr[0] = 85;
  MyBstr[1] = 83;
  MyBstr[2] = 66;
  MyBstr[3] = 45;
  MyBstr[4] = 86;
  MyBstr[5] = 105;
  MyBstr[6] = 100;
  MyBstr[7] = 101;
  MyBstr[8] = 111;
  MyBstr[9] = 103;
  MyBstr[10] = 101;
  MyBstr[11] = 114;
  MyBstr[12] = 228;
  MyBstr[13] = 116; 

  MyAnsiString = ConvertBSTRToString(MyBstr);
#endif
 
  XMLIO::IsoLatin1ToUtf8(MyAnsiString,MyUTF8String);
  // remember some node pointers
  xmlNodePtr rootNode;
  xmlNodePtr currentNode2;

  // create an instance of XMLIO and initialize it with a new XML-File
  XMLIO myXML;

 // root node is named "XMLTest"
  rootNode = myXML.create("XMLTest");
  
  // set some nodes and attributes
  currentNode2 = myXML.addChildNode(rootNode, "Child1");

  myXML.addAttribute(currentNode2, "AsUTF8", MyUTF8String );
  myXML.addAttribute(currentNode2, "AsAnsi", MyAnsiString );
  
  myXML.addContent(currentNode2, MyUTF8String );
  // write the whole predefined structure
  string MyFilename = "Test-"+MyAnsiString+".xml";
  if (myXML.write(MyFilename) <0) exit(1);

 
  return 0;

}