shx.h

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/*
 * Read ESRI shapefiles
 *
 * Copyright (C) 2023 Andreas Vögele
 *
 * This library is free software; you can redistribute it and/or modify it
 * under either the terms of the ISC License or the same terms as Perl.
 */
 
/* SPDX-License-Identifier: ISC OR Artistic-1.0-Perl OR GPL-1.0-or-later */
 
#ifndef _SHAPEREADER_SHX_H
#define _SHAPEREADER_SHX_H
 
#include "shp.h"
#include <stddef.h>
#include <stdio.h>
 
typedef shp_header_t shx_header_t;
 
typedef struct shx_record_t {
    size_t file_offset; 
    size_t record_size; 
} shx_record_t;
 
typedef shp_file_t shx_file_t;
 
extern shx_file_t *shx_init_file(shx_file_t *fh, FILE *fp, void *user_data);
 
#ifdef __GNUC__
extern void shx_set_error(shx_file_t *fh, const char *format, ...)
    __attribute__((format(printf, 2, 3)));
#else
extern void shx_set_error(shx_file_t *fh, const char *format, ...);
#endif
 
typedef int (*shx_header_callback_t)(shx_file_t *fh,
                                     const shx_header_t *header);
 
typedef int (*shx_record_callback_t)(shx_file_t *fh,
                                     const shx_header_t *header,
                                     const shx_record_t *record);
 
extern int shx_read(shx_file_t *fh, shx_header_callback_t handle_header,
                    shx_record_callback_t handle_record);
 
extern int shx_read_header(shx_file_t *fh, shx_header_t *header);
 
extern int shx_read_record(shx_file_t *fh, shx_record_t *record);
 
extern int shx_seek_record(shx_file_t *fh, size_t record_number,
                           shx_record_t *record);
 
#endif