svtools/source/misc/filterutils.cxx

   1 // MARKER(update_precomp.py): autogen include statement, do not remove
   2 #include "precompiled_svtools.hxx"
   3 #include "filterutils.hxx"
   4 #include <rtl/ustrbuf.hxx>
   5
   6 namespace svt
   7 {
   8 //........................................................................
   9
  10     using namespace ::com::sun::star;
  11
  12     rtl::OUString lcl_createStringFromArray( const char* pcCharArr, sal_uInt32 nBufSize, bool bIsCompressed )
  13     {
  14         rtl::OUStringBuffer aBuffer;
  15         if( bIsCompressed )
  16         {
  17             // buffer contains compressed Unicode, not encoded bytestring
  18             sal_Int32 nStrLen = static_cast< sal_Int32 >( nBufSize );
  19             aBuffer.setLength( nStrLen );
  20             const char* pcCurrChar = pcCharArr;
  21             for( sal_Int32 nChar = 0; nChar < nStrLen; ++nChar, ++pcCurrChar )
  22                 /*  *pcCurrChar may contain negative values and therefore MUST be
  23                     casted to unsigned char, before assigned to a sal_Unicode. */
  24                 aBuffer.setCharAt( nChar, static_cast< unsigned char >( *pcCurrChar ) );
  25         }
  26         else
  27         {
  28             // buffer contains Little-Endian Unicode
  29             sal_Int32 nStrLen = static_cast< sal_Int32 >( nBufSize ) / 2;
  30             aBuffer.setLength( nStrLen );
  31             const char* pcCurrChar = pcCharArr;
  32             for( sal_Int32 nChar = 0; nChar < nStrLen; ++nChar )
  33             {
  34                 /*  *pcCurrChar may contain negative values and therefore MUST be
  35                     casted to unsigned char, before assigned to a sal_Unicode. */
  36                 sal_Unicode cChar = static_cast< unsigned char >( *pcCurrChar++ );
  37                 cChar |= (static_cast< unsigned char >( *pcCurrChar++ ) << 8);
  38                 aBuffer.setCharAt( nChar, cChar );
  39             }
  40         }
  41         return aBuffer.makeStringAndClear();
  42     }
  43
  44     rtl::OUString BinFilterUtils::CreateOUStringFromUniStringArray( const char* pcCharArr, sal_uInt32 nBufSize )
  45     {
  46         return lcl_createStringFromArray( pcCharArr, nBufSize, false );
  47     }
  48
  49     rtl::OUString BinFilterUtils::CreateOUStringFromStringArray( const char* pcCharArr, sal_uInt32 nBufSize )
  50     {
  51         return lcl_createStringFromArray( pcCharArr, nBufSize, true );
  52     }
  53 //........................................................................
  54 } // namespace svt
  55 //........................................................................
  56