mosesdecoder/moses/src/CompactPT/CmphStringVectorAdapter.h

// $Id$                                                                                                                               
// vim:tabstop=2                                                                                                                      
/***********************************************************************                                                              
Moses - factored phrase-based language decoder                                                                                        
Copyright (C) 2006 University of Edinburgh                                                                                            
                                                                                                                                      
This library 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.                                                                    
                                                                                                                                      
This library 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 this library; if not, write to the Free Software                                                                   
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA                                                        
***********************************************************************/  

#ifndef moses_CmphStringVectorAdapterNew_h
#define moses_CmphStringVectorAdapterNew_h

#include <cassert>
#include <cstring>

#include "cmph.h"
#include "StringVector.h"

namespace Moses
{
    typedef struct
    {
        void *vector;
        cmph_uint32 position; 
    }
    cmph_vector_t;
   
      
    template <typename ValueT, typename PosT, template <typename> class Allocator>
    cmph_io_adapter_t *CmphStringVectorAdapterNew(StringVector<ValueT, PosT, Allocator>& sv)
    {
        cmph_io_adapter_t * key_source = (cmph_io_adapter_t *)malloc(sizeof(cmph_io_adapter_t));
        cmph_vector_t * cmph_vector = (cmph_vector_t *)malloc(sizeof(cmph_vector_t));
        assert(key_source);
        assert(cmph_vector);
        
        cmph_vector->vector = (void *)&sv;
        cmph_vector->position = 0;
        key_source->data = (void *)cmph_vector;
        key_source->nkeys = sv.size();
        
        return key_source;
    }

    template <typename ValueT, typename PosT, template <typename> class Allocator>
    int CmphStringVectorAdapterRead(void *data, char **key, cmph_uint32 *keylen)
    {
        cmph_vector_t *cmph_vector = (cmph_vector_t *)data;
        StringVector<ValueT, PosT, Allocator>* sv = (StringVector<ValueT, PosT, Allocator>*)cmph_vector->vector;
        size_t size;
        *keylen = (*sv)[cmph_vector->position].size();
        size = *keylen;
        *key = new char[size + 1];
        std::string temp = (*sv)[cmph_vector->position];
        std::strcpy(*key, temp.c_str());
        cmph_vector->position = cmph_vector->position + 1;
        return (int)(*keylen);
    }
    
    void CmphStringVectorAdapterDispose(void *data, char *key, cmph_uint32 keylen);

    void CmphStringVectorAdapterRewind(void *data);

    template <typename ValueT, typename PosT, template <typename> class Allocator>
    cmph_io_adapter_t* CmphStringVectorAdapter(StringVector<ValueT, PosT, Allocator>& sv)
    {
        cmph_io_adapter_t * key_source = CmphStringVectorAdapterNew(sv);
        
        key_source->read = CmphStringVectorAdapterRead<ValueT, PosT, Allocator>;
        key_source->dispose = CmphStringVectorAdapterDispose;
        key_source->rewind = CmphStringVectorAdapterRewind;
        return key_source;
    }
    
    //************************************************************************//
    
    cmph_io_adapter_t *CmphVectorAdapterNew(std::vector<std::string>& v);

    int CmphVectorAdapterRead(void *data, char **key, cmph_uint32 *keylen);
    
    void CmphVectorAdapterDispose(void *data, char *key, cmph_uint32 keylen);

    void CmphVectorAdapterRewind(void *data);

    cmph_io_adapter_t* CmphVectorAdapter(std::vector<std::string>& v);
    
}


#endif