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/**********************************************************************
*
* PostGIS - Spatial Types for PostgreSQL
* http://postgis.net
*
* PostGIS is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* PostGIS 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************
*
* Copyright 2021 Björn Harrtell
*
**********************************************************************/
#ifndef FLATGEOBUF_C_H
#define FLATGEOBUF_C_H
#ifdef __cplusplus
extern "C" {
#endif
#include "liblwgeom.h"
#include "lwgeom_log.h"
extern uint8_t flatgeobuf_magicbytes[];
extern uint8_t FLATGEOBUF_MAGICBYTES_SIZE;
// need c compatible variant of this enum
#define flatgeobuf_column_type_byte UINT8_C(0)
#define flatgeobuf_column_type_ubyte UINT8_C(1)
#define flatgeobuf_column_type_bool UINT8_C(2)
#define flatgeobuf_column_type_short UINT8_C(3)
#define flatgeobuf_column_type_ushort UINT8_C(4)
#define flatgeobuf_column_type_int UINT8_C(5)
#define flatgeobuf_column_type_uint UINT8_C(6)
#define flatgeobuf_column_type_long UINT8_C(7)
#define flatgeobuf_column_type_ulong UINT8_C(8)
#define flatgeobuf_column_type_float UINT8_C(9)
#define flatgeobuf_column_type_double UINT8_C(10)
#define flatgeobuf_column_type_string UINT8_C(11)
#define flatgeobuf_column_type_json UINT8_C(12)
#define flatgeobuf_column_type_datetime UINT8_C(13)
#define flatgeobuf_column_type_binary UINT8_C(14)
typedef struct flatgeobuf_column
{
const char *name;
uint8_t type;
const char *title;
const char *description;
uint32_t width;
uint32_t precision;
uint32_t scale;
bool nullable;
bool unique;
bool primary_key;
const char * metadata;
} flatgeobuf_column;
typedef struct flatgeobuf_item
{
double xmin;
double xmax;
double ymin;
double ymax;
uint32_t size;
uint64_t offset;
} flatgeobuf_item;
typedef struct flatgeobuf_ctx
{
// header contents
const char *name;
uint64_t features_count;
uint8_t geometry_type;
bool has_extent;
double xmin;
double xmax;
double ymin;
double ymax;
bool has_z;
bool has_m;
bool has_t;
bool has_tm;
uint16_t index_node_size;
int32_t srid;
flatgeobuf_column **columns;
uint16_t columns_size;
// encode/decode buffers
uint8_t *buf;
uint64_t offset;
uint64_t size;
LWGEOM *lwgeom;
uint8_t lwgeom_type;
uint8_t *properties;
uint32_t properties_len;
uint32_t properties_size;
// encode input
const char *geom_name;
uint32_t geom_index;
// encode spatial index bookkeeping
bool create_index;
flatgeobuf_item **items;
uint64_t items_len;
} flatgeobuf_ctx;
int flatgeobuf_encode_header(flatgeobuf_ctx *ctx);
int flatgeobuf_encode_feature(flatgeobuf_ctx *ctx);
void flatgeobuf_create_index(flatgeobuf_ctx *ctx);
int flatgeobuf_decode_header(flatgeobuf_ctx *ctx);
int flatgeobuf_decode_feature(flatgeobuf_ctx *ctx);
#ifdef __cplusplus
}
#endif
#endif /* FLATGEOBUF_C_H */
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