pythonwriter_d.h

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#ifndef SOMAIO_WRITER_PYTHONWRITER_D_H
#define SOMAIO_WRITER_PYTHONWRITER_D_H

//--- soma-io ----------------------------------------------------------------
#include <soma-io/config/soma_config.h>
#include <soma-io/datasource/datasource.h>
#include <soma-io/writer/pythonwriter.h>
#include <soma-io/utilities/asciidatasourcetraits.h>
//----------------------------------------------------------------------------

namespace {

template<typename T> 
void 
genericHelper( const carto::GenericObject & obj, soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  // using carto::GenericObject:: avoids a bug in gcc-2.96
  const T       & x = obj.GenericObject::value<T>();
  soma::AsciiDataSourceTraits<T>::write( ds, x );
}


template<>
void genericHelper<char>( const carto::GenericObject & obj, soma::PythonWriter & w, int,
                          bool )
{
  soma::DataSource      & ds = *w.dataSource();
  // using carto::GenericObject:: avoids a bug in gcc-2.96
  const char    & x = obj.GenericObject::value<char>();
  soma::AsciiDataSourceTraits<int>::write( ds, x );
}


template<>
void genericHelper<unsigned char>( const carto::GenericObject & obj,
                                   soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  // using carto::GenericObject:: avoids a bug in gcc-2.96
  const unsigned char   & x = obj.GenericObject::value<unsigned char>();
  soma::AsciiDataSourceTraits<unsigned>::write( ds, x );
}


template<>
void genericHelper<std::string>( const carto::GenericObject & obj,
                                 soma::PythonWriter & w, int, bool )
{
  w.writeString( *w.dataSource(), obj.getString() );
}


template<>
void genericHelper<double>( const carto::GenericObject & obj,
                            soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<double>::write( ds, obj.getScalar() );
}


template<>
void genericHelper<float>( const carto::GenericObject & obj,
                           soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<float>::write( ds, float( obj.getScalar() ) );
}


template<>
void genericHelper<int16_t>( const carto::GenericObject & obj,
                             soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<int16_t>::write(
    ds, int16_t( obj.getScalar() ) );
}


template<>
void genericHelper<uint16_t>( const carto::GenericObject & obj,
                              soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<uint16_t>::write(
    ds, uint16_t( obj.getScalar() ) );
}


template<>
void genericHelper<int32_t>( const carto::GenericObject & obj,
                             soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<int32_t>::write(
    ds, int32_t( obj.getScalar() ) );
}


template<>
void genericHelper<uint32_t>( const carto::GenericObject & obj,
                              soma::PythonWriter & w, int, bool )
{
  soma::DataSource      & ds = *w.dataSource();
  soma::AsciiDataSourceTraits<uint32_t>::write(
    ds, uint32_t( obj.getScalar() ) );
}


template<typename T> 
void dictHelper( const carto::GenericObject & obj, soma::PythonWriter & w, int indent,
                 bool writeInternals )
{
  // std::cout << "dictHelper<" << carto::DataTypeCode<T>::name() << ">\n";

  soma::DataSource                              & ds = *w.dataSource();
  const std::map<T, carto::Object>
    & x = obj.GenericObject::value<std::map<T, carto::Object> >();
  typename std::map<T, carto::Object>::const_iterator   im, em = x.end();
  bool                                  first = true, hassyntax = false;
  std::string                           ind, ind2;
  int                                   i;
  char                                  sep = '\n';

  if( w.singleLine() )
    sep = ' ';
  else
    {
      for( i=0; i<indent-1; ++i )
        ind += "    ";
      ind2 = ind + "  ";
      if( indent > 0 )
        ind += "    ";
      ++indent;
    }

  ds.putch( '{' );
  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind );

  std::string   synt;
  const carto::SyntaxedInterface *si
    = obj.GenericObject::getInterface<carto::SyntaxedInterface>();
  if( si && si->hasSyntax() )
    {
      synt = si->getSyntax();
      hassyntax = true;
    }
  else
    {
      try
        {
          carto::Object sx = obj.getProperty( "__syntax__" );
          if( sx.get() )
            {
              synt = sx->GenericObject::value<std::string>();
              hassyntax = true;
            }
        }
      catch( ... )
        {
        }
    }

  if( hassyntax )
    {
      soma::AsciiDataSourceTraits<std::string>::write( ds, "'__syntax__' : " );
      w.writeString( ds, synt );
      first = false;
    }

  for( im=x.begin(); im!=em; ++im )
    {
      if( first )
        first = false;
      else
        {
          ds.putch( ',' );
          ds.putch( sep );
          soma::AsciiDataSourceTraits<std::string>::write( ds, ind );
        }
      // const_cast: just to avoid referencing a const T
      carto::Object key = carto::Object::reference( const_cast<T &>( im->first ) );
      w.write( key, indent, "", "", writeInternals );
      soma::AsciiDataSourceTraits<std::string>::write( ds, " : " );
      w.write( im->second, indent, "", "", writeInternals );
    }
  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind );
  ds.putch( '}' );
}


template<> 
void dictHelper<std::string>( const carto::GenericObject & obj, soma::PythonWriter & w,
                              int indent, bool writeInternals )
{
  // std::cout << "dictHelper<string>\n";

  soma::DataSource                              & ds = *w.dataSource();
  const carto::IterableInterface 
    & y = *obj.getInterface<carto::IterableInterface>();
  carto::Object                         im;

  bool                                  first = true, hassyntax = false;
  std::string                           ind, ind2;
  int                                   i;
  char                                  sep = '\n';

  if( w.singleLine() )
    sep = ' ';
  else
    {
      for( i=0; i<indent-1; ++i )
        ind += "    ";
      ind2 = ind + "  ";
      if( indent > 0 )
        ind += "    ";
      ++indent;
    }

  ds.putch( '{' );
  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind );

  std::string   synt;
  const carto::SyntaxedInterface        *si = obj.getInterface<carto::SyntaxedInterface>();
  if( si && si->hasSyntax() )
    {
      synt = si->getSyntax();
      hassyntax = true;
    }
  else
    {
      try
        {
          carto::Object sx = obj.getProperty( "__syntax__" );
          if( sx.get() )
            {
              synt = sx->GenericObject::value<std::string>();
              hassyntax = true;
            }
        }
      catch( ... )
        {
        }
    }

  if( hassyntax )
    {
      soma::AsciiDataSourceTraits<std::string>::write( ds, "'__syntax__' : " );
      w.writeString( ds, synt );
      first = false;
    }

  std::string   key;
  im=y.objectIterator();
  while( im->isValid() )
    {
      try
      {
        key = im->key();
        if( ( writeInternals || !w.isInternal( "", key ) )
            && ( key != "__syntax__" || !hassyntax ) )
        {
          if( first )
            first = false;
          else
            {
              ds.putch( ',' );
              ds.putch( sep );
              soma::AsciiDataSourceTraits<std::string>::write( ds, ind );
            }
          w.writeString( ds, key );
          soma::AsciiDataSourceTraits<std::string>::write( ds, " : " );
          w.write( im->currentValue(), indent, "", key, writeInternals );
        }
      }
      catch( ... )
      {
        long key = im->intKey();
        if( first )
          first = false;
        else
          {
            ds.putch( ',' );
            ds.putch( sep );
            soma::AsciiDataSourceTraits<std::string>::write( ds, ind );
          }
        soma::AsciiDataSourceTraits<long>::write( ds, key );
        soma::AsciiDataSourceTraits<std::string>::write( ds, " : " );
        w.write( *im->currentValue(), indent, "", "", writeInternals );
      }
      im->next();
    }

  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind2 );
  ds.putch( '}' );
}


void rcDictHelper( const carto::GenericObject & obj, soma::PythonWriter & w, int indent,
                   bool writeInternals )
{
  soma::DataSource                              & ds = *w.dataSource();
  const std::map<carto::Object, carto::Object>  & x
    = obj.value<std::map<carto::Object, carto::Object> >();
  std::map<carto::Object, carto::Object>::const_iterator        im, em = x.end();
  bool                                  first = true, hassyntax = false;
  std::string                           ind, ind2;
  int                                   i;
  char                                  sep = '\n';

  if( w.singleLine() )
    sep = ' ';
  else
    {
      for( i=0; i<indent-1; ++i )
        ind += "    ";
      ind2 = ind + "  ";
      if( indent > 0 )
        ind += "    ";
      ++indent;
    }

  ds.putch( '{' );
  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind );

  std::string   synt;
  const carto::SyntaxedInterface        *si = obj.getInterface<carto::SyntaxedInterface>();
  if( si && si->hasSyntax() )
    {
      synt = si->getSyntax();
      hassyntax = true;
    }
  else
    {
      try
        {
          carto::Object sx = obj.getProperty( "__syntax__" );
          if( sx.get() )
            {
              synt = sx->GenericObject::value<std::string>();
              hassyntax = true;
            }
        }
      catch( ... )
        {
        }
    }

  if( hassyntax )
    {
      soma::AsciiDataSourceTraits<std::string>::write( ds, "'__syntax__' : " );
      w.writeString( ds, synt );
      first = false;
    }

  for( im=x.begin(); im!=em; ++im )
    {
      if( first )
        first = false;
      else
        {
          ds.putch( ',' );
          ds.putch( sep );
          soma::AsciiDataSourceTraits<std::string>::write( ds, ind );
        }
      w.write( im->first, indent, "", "", writeInternals );
      soma::AsciiDataSourceTraits<std::string>::write( ds, " : " );
      w.write( im->second, indent, "", "", writeInternals );
    }

  ds.putch( sep );
  soma::AsciiDataSourceTraits<std::string>::write( ds, ind2 );
  ds.putch( '}' );
}


void listHelper( const carto::GenericObject & obj, soma::PythonWriter & w,
                 int indent, bool writeInternals )
{
  soma::DataSource                      & ds = *w.dataSource();
  carto::Object                 it;
  bool                          first = true;

  ds.putch( '[' );
  ++indent;
  for( it=obj.objectIterator(); it->isValid(); it->next() )
    {
      if( first )
        first = false;
      else
        ds.putch( ',' );
      ds.putch( ' ' );
      w.write( it->currentValue(), indent, "", "", writeInternals );
    }
  ds.putch( ' ' );
  ds.putch( ']' );
}

} // namespace (internal linkage)

template<typename T> 
void 
soma::PythonWriter::genericSequenceHelper( const carto::GenericObject & obj,
                                           soma::PythonWriter & w,
                                           int ind,
                                           bool writeInternals )
{
  soma::DataSource    & ds = *w.dataSource();
  carto::Object ix = obj.objectIterator();
  carto::Object de;
  bool              first = true;

  ds.putch( '[' );
  for( ix=obj.objectIterator(); ix->isValid(); ix->next() )
  {
    if( first )
    {
      first = false;
          ds.putch( ' ' );
    }
    else
    {
      ds.putch( ',' );
      ds.putch( ' ' );
    }
    de = ix->currentValue();
    genericHelper<typename T::value_type>( *de, w, ind, writeInternals );
  }
  ds.putch( ' ' );
  ds.putch( ']' );
}

#endif