Vector library - header manipulation. More...

#include <stdlib.h>
#include <string.h>
#include <grass/vector.h>
#include <grass/glocale.h>
#include "local_proto.h"

Include dependency graph for vector/Vlib/header.c:

Go to the source code of this file.

Functions
int	Vect_print_header (struct Map_info *Map)
	Print vector map header to stdout.

int	Vect_read_header (struct Map_info *Map)
	Read vector map header from map head file.

int	Vect_write_header (struct Map_info *Map)
	Write vector map header to map head file.

int	Vect__write_head (struct Map_info *Map)
	Writes head information to text file (GV_HEAD_ELEMENT)

int	Vect__read_head (struct Map_info *Map)
	Reads head information from text file (GV_HEAD_ELEMENT) - for internal use only.

const char *	Vect_get_name (struct Map_info *Map)
	Get name of vector map.

const char *	Vect_get_mapset (struct Map_info *Map)
	Get name of mapset where vector map lives.

const char *	Vect_get_full_name (struct Map_info *Map)
	Get fully qualified name of vector map.

int	Vect_is_3d (struct Map_info *Map)
	Check if vector map is 3D.

int	Vect_set_organization (struct Map_info Map, const char str)
	Set organization string in map header.

const char *	Vect_get_organization (struct Map_info *Map)
	Get organization string from map header.

int	Vect_set_date (struct Map_info Map, const char str)
	Set date of digitization in map header.

const char *	Vect_get_date (struct Map_info *Map)
	Get date of digitization from map header.

int	Vect_set_person (struct Map_info Map, const char str)
	Set name of user who digitized the map in map header.

const char *	Vect_get_person (struct Map_info *Map)
	Get user name string who digitized the map from map header.

int	Vect_set_map_name (struct Map_info Map, const char str)
	Set map name in map header.

const char *	Vect_get_map_name (struct Map_info *Map)
	Get map name from map header.

int	Vect_set_map_date (struct Map_info Map, const char str)
	Set date when the source map was originally produced in map header.

const char *	Vect_get_map_date (struct Map_info *Map)
	Get date when the source map was originally produced from map header.

int	Vect_set_scale (struct Map_info *Map, int scale)
	Set map scale in map header.

int	Vect_get_scale (struct Map_info *Map)
	Get map scale from map header.

int	Vect_set_comment (struct Map_info Map, const char str)
	Set comment or other info string in map header.

const char *	Vect_get_comment (struct Map_info *Map)
	Get comment or other info string from map header.

int	Vect_set_zone (struct Map_info *Map, int zone)
	Set projection zone in map header.

int	Vect_get_zone (struct Map_info *Map)
	Get projection zone from map header.

int	Vect_set_proj (struct Map_info *Map, int proj)
	Set projection in map header.

int	Vect_get_proj (struct Map_info *Map)
	Get projection from map header.

const char *	Vect_get_proj_name (struct Map_info *Map)
	Query cartographic projection name of pointer to Map_info structure.

int	Vect_set_thresh (struct Map_info *Map, double thresh)
	Set threshold used for digitization in map header.

double	Vect_get_thresh (struct Map_info *Map)
	Get threshold used for digitization from map header.

Detailed Description

Vector library - header manipulation.

Higher level functions for reading/writing/manipulating vectors.

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: Original author CERL, probably Dave Gerdes or Mike Higgins.; Update to GRASS 5.7 Radim Blazek and David D. Gray.; Update to GRASS 7 (OGR support) by Martin Landa <landa.martin gmail.com>

Definition in file vector/Vlib/header.c.

Function Documentation

◆ Vect__read_head()

int Vect__read_head ( struct Map_info * Map )

Reads head information from text file (GV_HEAD_ELEMENT) - for internal use only.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 120 of file vector/Vlib/header.c.

References _, G_debug(), G_fopen_old(), G_free(), G_getl2(), G_warning(), GPATH_MAX, GV_HEAD_ELEMENT, AMI_STREAM< T >::name(), NULL, Vect__get_path(), Vect__init_head(), Vect_get_full_name(), Vect_set_comment(), Vect_set_date(), Vect_set_map_date(), Vect_set_map_name(), Vect_set_organization(), Vect_set_person(), Vect_set_proj(), Vect_set_scale(), Vect_set_thresh(), and Vect_set_zone().

Referenced by Vect__open_old(), and Vect_read_header().

◆ Vect__write_head()

int Vect__write_head ( struct Map_info * Map )

Writes head information to text file (GV_HEAD_ELEMENT)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 79 of file vector/Vlib/header.c.

References _, G_fopen_new(), G_free(), G_warning(), GPATH_MAX, GV_HEAD_ELEMENT, NULL, Vect__get_path(), Vect_get_comment(), Vect_get_date(), Vect_get_full_name(), Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), Vect_get_person(), Vect_get_proj(), Vect_get_scale(), Vect_get_thresh(), and Vect_get_zone().

Referenced by V1_close_nat(), V1_close_ogr(), V1_close_pg(), and Vect_write_header().

◆ Vect_get_comment()

const char * Vect_get_comment ( struct Map_info * Map )

Get comment or other info string from map header.

Parameters

Map	pointer to Map_info structure

Returns: comment or other info string

Definition at line 460 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_date()

const char * Vect_get_date ( struct Map_info * Map )

Get date of digitization from map header.

Parameters

Map	pointer to Map_info structure

Returns: date of digitization string

Definition at line 321 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_full_name()

const char * Vect_get_full_name ( struct Map_info * Map )

Get fully qualified name of vector map.

for GV_FORMAT_NATIVE and GV_FORMAT_OGR returns "map@mapset"
for GV_FORMAT_OGR_DIRECT returns "layer@datasourse"

Allocated string should be freed by G_free().

Parameters

Map	pointer to Map_info structure

Returns: allocated string "name@mapset"

Definition at line 224 of file vector/Vlib/header.c.

References G_malloc, GV_FORMAT_OGR_DIRECT, and AMI_STREAM< T >::name().

Referenced by IL_vector_input_data_2d(), V1_open_old_nat(), V2_open_old_ogr(), V2_open_old_pg(), Vect__open_old(), Vect__read_head(), Vect__write_head(), Vect_build_partial(), Vect_build_sidx_from_topo(), Vect_cidx_open(), Vect_close(), Vect_copy_map_lines_field(), Vect_copy_tables(), Vect_get_finfo_dsn_name(), Vect_get_finfo_layer_name(), Vect_get_map_box1(), Vect_open_fidx(), Vect_read_line(), Vect_read_line_geos(), Vect_read_next_line(), Vect_sfa_get_num_features(), and Vect_topo_dump().

◆ Vect_get_map_date()

const char * Vect_get_map_date ( struct Map_info * Map )

Get date when the source map was originally produced from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing a date

Definition at line 405 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_map_name()

const char * Vect_get_map_name ( struct Map_info * Map )

Get map name from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing map name

Definition at line 377 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_mapset()

const char * Vect_get_mapset ( struct Map_info * Map )

Get name of mapset where vector map lives.

Parameters

Map	pointer to Map_info structure

Returns: string containing mapset name

Definition at line 207 of file vector/Vlib/header.c.

◆ Vect_get_name()

const char * Vect_get_name ( struct Map_info * Map )

Get name of vector map.

Parameters

Map	pointer to Map_info structure

Returns: string containing name

Definition at line 195 of file vector/Vlib/header.c.

References AMI_STREAM< T >::name().

Referenced by Vect__open_old(), Vect_cidx_save(), Vect_close(), Vect_copy_tables(), Vect_delete_line(), Vect_read_ascii(), Vect_restore_line(), Vect_rewrite_line(), Vect_save_sidx(), Vect_write_dblinks(), and Vect_write_line().

◆ Vect_get_organization()

const char * Vect_get_organization ( struct Map_info * Map )

Get organization string from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing organization name

Definition at line 290 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_person()

const char * Vect_get_person ( struct Map_info * Map )

Get user name string who digitized the map from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing user name

Definition at line 349 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_proj()

int Vect_get_proj ( struct Map_info * Map )

Get projection from map header.

Parameters

Map	pointer to Map_info structure

Returns: PROJECTION_XY 0 - x,y (Raw imagery),; PROJECTION_UTM 1 - UTM Universal Transverse Mercator,; PROJECTION_LL 3 - Latitude-Longitude

Definition at line 526 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), and Vect_get_proj_name().

◆ Vect_get_proj_name()

const char * Vect_get_proj_name ( struct Map_info * Map )

Query cartographic projection name of pointer to Map_info structure.

Returns a pointer to a string which is a printable name for projection code proj (as returned by Vect_get_proj()).

Parameters

Map	pointer to Map_info structure

Returns: allocated string containing projection name; NULL if proj is not a valid projection

Definition at line 542 of file vector/Vlib/header.c.

References _, G_database_projection_name(), G_debug(), G_projection_name(), G_store(), name, PROJECTION_LL, PROJECTION_OTHER, PROJECTION_UTM, PROJECTION_XY, strcpy, and Vect_get_proj().

◆ Vect_get_scale()

int Vect_get_scale ( struct Map_info * Map )

Get map scale from map header.

Parameters

Map	pointer to Map_info structure

Returns: map scale

Definition at line 432 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_thresh()

double Vect_get_thresh ( struct Map_info * Map )

Get threshold used for digitization from map header.

Parameters

Map	pointer to Map_info structure

Returns: threshold used for digitization

Definition at line 591 of file vector/Vlib/header.c.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_zone()

int Vect_get_zone ( struct Map_info * Map )

Get projection zone from map header.

Parameters

Map	pointer to Map_info structure (unused, returns the zone for the active region)

Returns: projection zone

Definition at line 488 of file vector/Vlib/header.c.

References G_zone().

Referenced by Vect__open_old(), Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_is_3d()

int Vect_is_3d ( struct Map_info * Map )

Check if vector map is 3D.

Check vector map header.

Parameters

Map	pointer to Map_info structure

Returns: TRUE vector map is 3D; FALSE vector map is not 3D

Definition at line 262 of file vector/Vlib/header.c.

Referenced by Gp_load_sites(), Gv_load_vect(), IL_vector_input_data_2d(), V2__update_area_pg(), Vect_close(), Vect_get_area_box(), Vect_get_isle_box(), Vect_get_line_box(), Vect_read_ascii(), Vect_read_line_to_wkb(), Vect_remove_duplicates(), Vect_write_ascii(), Vedit_move_lines(), and Vedit_move_vertex().

◆ Vect_print_header()

int Vect_print_header ( struct Map_info * Map )

Print vector map header to stdout.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success

Definition at line 33 of file vector/Vlib/header.c.

References Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), and Vect_get_scale().

◆ Vect_read_header()

int Vect_read_header ( struct Map_info * Map )

Read vector map header from map head file.

Parameters

Map	pointrt to Map_info structure

Returns: 0

Definition at line 51 of file vector/Vlib/header.c.

References Vect__read_head().

◆ Vect_set_comment()

int Vect_set_comment	(	struct Map_info *	Map,
		const char *	str
	)

Set comment or other info string in map header.

Parameters

Map	pointer to Map_info structure
str	comment or other info string

Returns: 0

Definition at line 445 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_date()

int Vect_set_date	(	struct Map_info *	Map,
		const char *	str
	)

Set date of digitization in map header.

Todo:: This should be coupled to DateTime functions to support time series

Parameters

Map	pointer to Map_info structure
str	date given as string

Returns: 0

Definition at line 306 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_map_date()

int Vect_set_map_date	(	struct Map_info *	Map,
		const char *	str
	)

Set date when the source map was originally produced in map header.

Parameters

Map	pointer to Map_info structure
str	date given as a string

Returns: 0

Definition at line 390 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_map_name()

int Vect_set_map_name	(	struct Map_info *	Map,
		const char *	str
	)

Set map name in map header.

Parameters

Map	pointer to Map_info structure
str	map name to be set

Returns: 0

Definition at line 362 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_organization()

int Vect_set_organization	(	struct Map_info *	Map,
		const char *	str
	)

Set organization string in map header.

Parameters

Map	pointer to Map_info structure
str	organization name

Returns: 0

Definition at line 275 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_person()

int Vect_set_person	(	struct Map_info *	Map,
		const char *	str
	)

Set name of user who digitized the map in map header.

Parameters

Map	pointer to Map_info structure
str	user name

Returns: 0

Definition at line 334 of file vector/Vlib/header.c.

References G_free(), and G_store().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_proj()

int Vect_set_proj	(	struct Map_info *	Map,
		int	proj
	)

Set projection in map header.

Supported projections:

PROJECTION_XY 0 - x,y (Raw imagery),
PROJECTION_UTM 1 - UTM Universal Transverse Mercator,
PROJECTION_LL 3 - Latitude-Longitude

Parameters

Map	pointer to Map_info structure
proj	projection code

Returns: 0

Definition at line 510 of file vector/Vlib/header.c.

Referenced by Vect__init_head(), Vect__open_old(), and Vect__read_head().

◆ Vect_set_scale()

int Vect_set_scale	(	struct Map_info *	Map,
		int	scale
	)

Set map scale in map header.

Parameters

Map	pointer to Map_info structure
scale	map scale

Returns: 0

Definition at line 418 of file vector/Vlib/header.c.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_thresh()

int Vect_set_thresh	(	struct Map_info *	Map,
		double	thresh
	)

Set threshold used for digitization in map header.

Parameters

Map	pointer to Map_info structure
thresh	threshold used for digitization

Returns: 0

Definition at line 577 of file vector/Vlib/header.c.

References G_debug().

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_zone()

int Vect_set_zone	(	struct Map_info *	Map,
		int	zone
	)

Set projection zone in map header.

Parameters

Map	pointer to Map_info structure
zone	projection zone

Returns: 0

Definition at line 473 of file vector/Vlib/header.c.

Referenced by Vect__init_head(), Vect__open_old(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_write_header()

int Vect_write_header ( struct Map_info * Map )

Write vector map header to map head file.

Parameters

Map	pointer to Map_info structure

Returns: 0

Definition at line 64 of file vector/Vlib/header.c.

References Vect__write_head().

Functions

Detailed Description

Function Documentation

◆ Vect__read_head()

◆ Vect__write_head()

◆ Vect_get_comment()

◆ Vect_get_date()

◆ Vect_get_full_name()

◆ Vect_get_map_date()

◆ Vect_get_map_name()

◆ Vect_get_mapset()

◆ Vect_get_name()

◆ Vect_get_organization()

◆ Vect_get_person()

◆ Vect_get_proj()

◆ Vect_get_proj_name()

◆ Vect_get_scale()

◆ Vect_get_thresh()

◆ Vect_get_zone()

◆ Vect_is_3d()

◆ Vect_print_header()

◆ Vect_read_header()

◆ Vect_set_comment()

◆ Vect_set_date()

◆ Vect_set_map_date()

◆ Vect_set_map_name()

◆ Vect_set_organization()

◆ Vect_set_person()

◆ Vect_set_proj()

◆ Vect_set_scale()

◆ Vect_set_thresh()

◆ Vect_set_zone()

◆ Vect_write_header()