spindex_rw.c File Reference

#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <grass/vector.h>
#include <grass/glocale.h>
#include <grass/version.h>

Include dependency graph for spindex_rw.c:

Go to the source code of this file.

Macros
#define	NUMSIDES   6

Functions
int	dig_Wr_spidx_head (struct gvfile *fp, struct Plus_head *ptr)
	Write spatial index header to file. More...
int	dig_Rd_spidx_head (struct gvfile *fp, struct Plus_head *ptr)
	Read spatial index header from sidx file. More...
int	dig_Wr_spidx (struct gvfile *fp, struct Plus_head *Plus)
	Write spatial index to file. More...
int	dig_Rd_spidx (struct gvfile *fp, struct Plus_head *Plus)
	Read spatial index from sidx file Only needed when old vector is opened in update mode. More...
int	dig_dump_spidx (FILE *fp, const struct Plus_head *Plus)
	Dump spatial index. More...
int	rtree_search (struct RTree *t, struct RTree_Rect *r, SearchHitCallback shcb, void *cbarg, struct Plus_head *Plus)
	Search spatial index file Can't use regular RTreeSearch() here because sidx must be read with dig__fread_port_*() functions. More...

Macro Definition Documentation

NUMSIDES

#define NUMSIDES   6

Definition at line 29 of file spindex_rw.c.

Function Documentation

dig_dump_spidx()

int dig_dump_spidx	(	FILE *	fp,
		const struct Plus_head *	Plus
	)

Dump spatial index.

Parameters

[out]	fp	pointer to FILE
	Plus	pointer to Plus_head structure

Returns

0

Definition at line 1274 of file spindex_rw.c.

References RTree::fd, and Plus_head::Node_spidx.

Referenced by Vect_sidx_dump().

dig_Rd_spidx()

int dig_Rd_spidx	(	struct gvfile *	fp,
		struct Plus_head *	Plus
	)

Read spatial index from sidx file Only needed when old vector is opened in update mode.

Parameters

	fp	pointer to struct gvfile
[in,out]	Plus	pointer to Plus_head structure

Returns

0

Definition at line 1230 of file spindex_rw.c.

References dig_Rd_spidx_head(), dig_rewind(), dig_set_cur_port(), dig_spidx_free(), dig_spidx_init(), G_debug(), and Plus_head::spidx_port.

dig_Rd_spidx_head()

int dig_Rd_spidx_head	(	struct gvfile *	fp,
		struct Plus_head *	ptr
	)

Read spatial index header from sidx file.

Parameters

	fp	pointer to struct gvfile
[in,out]	ptr	pointer to Plus_head structure

Returns

0 on success

-1 on error

Definition at line 268 of file spindex_rw.c.

References _, Plus_head::Area_spidx, Plus_head::Area_spidx_offset, Version_info::back_major, Version_info::back_minor, Plus_head::coor_size, dig__fread_port_C(), dig__fread_port_I(), dig__fread_port_L(), dig__fread_port_O(), dig_fseek(), dig_init_portable(), dig_rewind(), dig_set_cur_port(), Plus_head::Face_spidx_offset, G_debug(), G_fatal_error(), G_warning(), GRASS_VERSION_MAJOR, GRASS_VERSION_MINOR, GV_SIDX_VER_MAJOR, GV_SIDX_VER_MINOR, Plus_head::Hole_spidx_offset, Plus_head::Isle_spidx, Plus_head::Isle_spidx_offset, RTree::leafcard, Plus_head::Line_spidx, Plus_head::Line_spidx_offset, Version_info::major, RTree::min_leaf_fill, RTree::min_node_fill, Version_info::minor, RTree::n_leafs, RTree::n_nodes, RTree::ndims, Plus_head::Node_spidx, Plus_head::Node_spidx_offset, RTree::nodecard, RTree::nodesize, RTree::nsides, Port_info::off_t_size, Plus_head::off_t_size, RTree::rootlevel, RTree::rootpos, Plus_head::spidx, Plus_head::spidx_head_size, Plus_head::spidx_port, Plus_head::spidx_with_z, t, Plus_head::version, and Plus_head::Volume_spidx_offset.

Referenced by dig_Rd_spidx().

dig_Wr_spidx()

int dig_Wr_spidx	(	struct gvfile *	fp,
		struct Plus_head *	Plus
	)

Write spatial index to file.

Parameters

[out]	fp	pointer to struct gvfile
	Plus	pointer to Plus_head structure

Returns

0

Definition at line 1180 of file spindex_rw.c.

References dig_rewind(), dig_set_cur_port(), dig_Wr_spidx_head(), G_debug(), Plus_head::Node_spidx_offset, and Plus_head::spidx_port.

Referenced by Vect_save_sidx().

dig_Wr_spidx_head()

int dig_Wr_spidx_head	(	struct gvfile *	fp,
		struct Plus_head *	ptr
	)

Write spatial index header to file.

Parameters

[in,out]	fp	pointer to struct gvfile
	ptr	pointer to Plus_head structure

Returns

0 on success

-1 on error

Definition at line 56 of file spindex_rw.c.

References _, Plus_head::Area_spidx, Plus_head::Area_spidx_offset, Port_info::byte_order, Plus_head::coor_size, dig__fwrite_port_C(), dig__fwrite_port_I(), dig__fwrite_port_L(), dig__fwrite_port_O(), dig_ftell(), dig_rewind(), dig_set_cur_port(), Plus_head::Face_spidx_offset, G_debug(), G_fatal_error(), GV_SIDX_EARLIEST_MAJOR, GV_SIDX_EARLIEST_MINOR, GV_SIDX_VER_MAJOR, GV_SIDX_VER_MINOR, Plus_head::Hole_spidx_offset, if(), Plus_head::Isle_spidx, Plus_head::Isle_spidx_offset, RTree::leafcard, Plus_head::Line_spidx, Plus_head::Line_spidx_offset, RTree::min_leaf_fill, RTree::min_node_fill, RTree::n_leafs, RTree::n_nodes, RTree::ndims, Plus_head::Node_spidx, Plus_head::Node_spidx_offset, RTree::nodecard, RTree::nodesize, RTree::nsides, Port_info::off_t_size, Plus_head::off_t_size, PORT_INT_MAX, RTree::rootlevel, Plus_head::spidx_head_size, Plus_head::spidx_port, Plus_head::spidx_with_z, t, and Plus_head::Volume_spidx_offset.

Referenced by dig_Wr_spidx().

rtree_search()

int rtree_search	(	struct RTree *	t,
		struct RTree_Rect *	r,
		SearchHitCallback	shcb,
		void *	cbarg,
		struct Plus_head *	Plus
	)

Search spatial index file Can't use regular RTreeSearch() here because sidx must be read with dig__fread_port_*() functions.

Parameters

t	pointer to RTree
r	search rectangle
shcb	user-provided callback
cbarg	argument for shcb
Plus	pointer to Plus_head structure

Returns

number of qualifying rectangles

Definition at line 1398 of file spindex_rw.c.

References assert, dig_set_cur_port(), and Plus_head::spidx_port.