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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2007 Artem Pavlenko
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
//$Id$
// mapnik
#include <mapnik/global.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/box2d.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/feature_layer_desc.hpp>
#include <mapnik/wkb.hpp>
#include <mapnik/unicode.hpp>
#include <mapnik/feature_factory.hpp>
#include <mapnik/sql_utils.hpp>
#include <string.h>
// ogr
#include "sqlite_featureset.hpp"
using mapnik::query;
using mapnik::box2d;
using mapnik::CoordTransform;
using mapnik::Feature;
using mapnik::feature_ptr;
using mapnik::geometry_utils;
using mapnik::transcoder;
using mapnik::feature_factory;
sqlite_featureset::sqlite_featureset(boost::shared_ptr<sqlite_resultset> rs,
std::string const& encoding,
mapnik::wkbFormat format,
bool multiple_geometries,
bool using_subquery)
: rs_(rs),
tr_(new transcoder(encoding)),
format_(format),
multiple_geometries_(multiple_geometries),
using_subquery_(using_subquery)
{
}
sqlite_featureset::~sqlite_featureset() {}
void sqlite_dequote(char *z){
char quote; /* Quote character (if any ) */
quote = z[0];
if( quote=='[' || quote=='\'' || quote=='"' || quote=='`' ){
int iIn = 1; /* Index of next byte to read from input */
int iOut = 0; /* Index of next byte to write to output */
/* If the first byte was a '[', then the close-quote character is a ']' */
if( quote=='[' ) quote = ']';
while( z[iIn] ){
if( z[iIn]==quote ){
if( z[iIn+1]!=quote ) break;
z[iOut++] = quote;
iIn += 2;
}else{
z[iOut++] = z[iIn++];
}
}
z[iOut] = '\0';
}
}
feature_ptr sqlite_featureset::next()
{
if (rs_->is_valid () && rs_->step_next ())
{
int size;
const char* data = (const char *) rs_->column_blob (0, size);
if (!data)
return feature_ptr();
int feature_id = rs_->column_integer (1);
feature_ptr feature(feature_factory::create(feature_id));
geometry_utils::from_wkb(feature->paths(),data,size,multiple_geometries_,format_);
for (int i = 2; i < rs_->column_count (); ++i)
{
const int type_oid = rs_->column_type (i);
const char* fld_name = rs_->column_name(i);
if (!fld_name)
continue;
if (!using_subquery_)
{
switch (type_oid)
{
case SQLITE_INTEGER:
{
boost::put(*feature,fld_name,rs_->column_integer (i));
break;
}
case SQLITE_FLOAT:
{
boost::put(*feature,fld_name,rs_->column_double (i));
break;
}
case SQLITE_TEXT:
{
int text_size;
const char * data = rs_->column_text(i,text_size);
UnicodeString ustr = tr_->transcode(data,text_size);
boost::put(*feature,fld_name,ustr);
break;
}
case SQLITE_NULL:
{
boost::put(*feature,fld_name,mapnik::value_null());
break;
}
case SQLITE_BLOB:
break;
default:
#ifdef MAPNIK_DEBUG
std::clog << "Sqlite Plugin: unhandled type_oid=" << type_oid << std::endl;
#endif
break;
}
}
else
{
// subqueries in sqlite lead to field double quoting which we need to strip
char fld_name2[strlen(fld_name)];
strcpy(fld_name2,fld_name);
sqlite_dequote(fld_name2);
switch (type_oid)
{
case SQLITE_INTEGER:
{
boost::put(*feature,fld_name2,rs_->column_integer (i));
break;
}
case SQLITE_FLOAT:
{
boost::put(*feature,fld_name2,rs_->column_double (i));
break;
}
case SQLITE_TEXT:
{
int text_size;
const char * data = rs_->column_text(i,text_size);
UnicodeString ustr = tr_->transcode(data,text_size);
boost::put(*feature,fld_name2,ustr);
break;
}
case SQLITE_NULL:
{
boost::put(*feature,fld_name2,mapnik::value_null());
break;
}
case SQLITE_BLOB:
break;
default:
#ifdef MAPNIK_DEBUG
std::clog << "Sqlite Plugin: unhandled type_oid=" << type_oid << std::endl;
#endif
break;
}
}
}
return feature;
}
return feature_ptr();
}
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