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/******************************************************************************
*
* Purpose: Declaration of the VecSegHeader class.
*
* This class is used to manage reading and writing of the vector segment
* header section, growing them as needed. It is exclusively a private
* helper class for the CPCIDSKVectorSegment.
*
******************************************************************************
* Copyright (c) 2009
* PCI Geomatics, 50 West Wilmot Street, Richmond Hill, Ont, Canada
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef __INCLUDE_SEGMENT_VECSEGHEADER_H
#define __INCLUDE_SEGMENT_VECSEGHEADER_H
#include "pcidsk_config.h"
#include "pcidsk_types.h"
#include "pcidsk_buffer.h"
#include "pcidsk_vectorsegment.h"
#include <string>
#include <map>
namespace PCIDSK
{
class CPCIDSKVectorSegment;
/************************************************************************/
/* VecSegHeader */
/************************************************************************/
const int hsec_proj = 0;
const int hsec_rst = 1;
const int hsec_record = 2;
const int hsec_shape = 3;
class VecSegHeader
{
public:
VecSegHeader();
~VecSegHeader();
void InitializeNew();
void InitializeExisting();
void GrowHeader( uint32 new_blocks );
bool GrowSection( int hsec, uint32 new_size );
void WriteHeaderSection( int hsec, PCIDSKBuffer &buffer );
void GrowBlockIndex( int section, int new_blocks );
uint32 section_offsets[4];
uint32 section_sizes[4];
// Field Definitions
std::vector<std::string> field_names;
std::vector<std::string> field_descriptions;
std::vector<ShapeFieldType> field_types;
std::vector<std::string> field_formats;
std::vector<ShapeField> field_defaults;
void WriteFieldDefinitions();
uint32 ShapeIndexPrepare( uint32 byte_size );
CPCIDSKVectorSegment *vs;
uint32 header_blocks;
private:
bool initialized;
bool needs_swap;
};
} // end namespace PCIDSK
#endif // __INCLUDE_SEGMENT_VECTORSEGMENT_H
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