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Copy pathShapeFileStream.h
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110 lines (94 loc) · 2.98 KB
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//
// Index Searching Library
//
// Copyright (C) 2008 Versaterm Inc.
//
// The core of this library is the Spatial Index Library by Marios Hadjieleftheriou.
//
// http://www.research.att.com/~marioh/spatialindex/index.html
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
//
#pragma once
#pragma warning( disable : 4290 )
#include <spatialindex/SpatialIndex.h>
#include <ios>
using namespace std;
using namespace SpatialIndex;
//Shapefile File Info
#define HEADER_BYTES_16 50
#define HEADER_BYTES_32 100
#define FILE_CODE 9994
#define VERSION 1000
#define UNUSEDSIZE 5
#define UNUSEDVAL 0
#define RECORD_HEADER_LENGTH_32 8
#define RECORD_SHAPE_TYPE_32 8
class ShapeFileStream : public IDataStream
{
public:
ShapeFileStream(string shapeFile) : m_pShpNext(nullptr), m_pIdxNext(nullptr)
{
idxID = -1;
idxOffset = -1;
idxLength = -1;
SHXIdxLen = -1;
const string sShpFile = std::string(shapeFile) + ".shp";
const string sShpIdxFile = std::string(shapeFile) + ".shx";
m_ShpIdx.open(sShpIdxFile.c_str(), ios_base::in | ios_base::binary);
m_ShpFile.open(sShpFile.c_str(), ios_base::in | ios_base::binary);
if (!m_ShpIdx || !m_ShpFile)
throw "Input file not found.";
ReadShxFile(-1);
if (!m_ShpIdx.good() || !m_ShpFile.good())
{
throw Tools::IllegalStateException("Input file not found.");
}
}
virtual ~ShapeFileStream()
{
if (m_pShpNext != nullptr)
delete m_pShpNext;
}
virtual IData* getNext();
virtual IData* GetNextShapeRecord();
virtual IData* GetExact(int index);
virtual bool hasNext() throw (Tools::NotSupportedException)
{
return m_pShpNext != nullptr;
}
virtual uint32_t size() throw (Tools::NotSupportedException)
{
throw Tools::NotSupportedException("Operation not supported.");
}
virtual void rewind() throw (Tools::NotSupportedException)
{
throw Tools::NotSupportedException("Operation not supported.");
}
std::ifstream m_ShpIdx, m_ShpFile;
RTree::Data* m_pShpNext;
private:
void ReadShxFile(int recordId);
void ReadShpFile(void);
void ReadShxFileHeader(void);
void ReadShpFileHeader(void);
static inline void SwapEndian(char* a, int size);
RTree::Data* m_pIdxNext;
int idxID;
int idxOffset;
int idxLength;
streamoff SHXIdxLen;
};