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/*
****************************************************************************
*
* MODULE: Vector library
*
* AUTHOR(S): Original author CERL, probably Dave Gerdes or Mike Higgins.
* Update to GRASS 5.7 Radim Blazek and David D. Gray.
*
* PURPOSE: Higher level functions for reading/writing/manipulating vectors.
*
* COPYRIGHT: (C) 2001 by the GRASS Development Team
*
* This program is free software under the GNU General Public
* License (>=v2). Read the file COPYING that comes with GRASS
* for details.
*
*****************************************************************************/
#include <unistd.h>
#include "Vect.h"
#include "gis.h"
#include <sys/types.h>
#include <sys/stat.h>
static char name_buf[1024];
int check_coor ( struct Map_info *Map );
/* Open old file.
* Map->name and Map->mapset must be set before
*
* Return: 0 success
* -1 error */
int
V1_open_old_nat ( struct Map_info *Map, int update)
{
char buf[1000];
G_debug (1, "V1_open_old_nat(): name = %s mapset = %s", Map->name, Map->mapset);
sprintf (buf, "%s/%s", GRASS_VECT_DIRECTORY, Map->name);
dig_file_init ( &(Map->dig_fp) );
if ( update )
Map->dig_fp.file = G_fopen_modify (buf, GRASS_VECT_COOR_ELEMENT);
else
Map->dig_fp.file = G_fopen_old (buf, GRASS_VECT_COOR_ELEMENT, Map->mapset);
if ( Map->dig_fp.file == NULL ) return -1;
if ( !(dig__read_head (Map)) ) return (-1);
check_coor ( Map );
/* set conversion matrices */
dig_init_portable ( &(Map->head.port), Map->head.port.byte_order );
/* load to memory */
if ( !update )
dig_file_load ( &(Map->dig_fp) );
return (0);
}
/* Open new file.
*
* Return: 0 success
* -1 error */
int
V1_open_new_nat (
struct Map_info *Map,
char *name,
int with_z)
{
char buf[1000];
struct stat info;
G_debug (1, "V1_open_new_nat(): name = %s", name);
sprintf (buf, "%s/%s", GRASS_VECT_DIRECTORY, name);
/* Set the 'coor' file version */
Map->head.Version_Major = GV_COOR_VER_MAJOR;
Map->head.Version_Minor = GV_COOR_VER_MINOR;
Map->head.Back_Major = GV_COOR_EARLIEST_MAJOR;
Map->head.Back_Minor = GV_COOR_EARLIEST_MINOR;
/* TODO open better */
dig_file_init ( &(Map->dig_fp) );
Map->dig_fp.file = G_fopen_new (buf, GRASS_VECT_COOR_ELEMENT);
if ( Map->dig_fp.file == NULL ) return (-1);
fclose ( Map->dig_fp.file );
dig_file_init ( &(Map->dig_fp) );
Map->dig_fp.file = G_fopen_modify (buf, GRASS_VECT_COOR_ELEMENT);
if ( Map->dig_fp.file == NULL ) return (-1);
/* check to see if dig_plus file exists and if so, remove it */
G__file_name (name_buf, buf, GV_TOPO_ELEMENT, G_mapset ());
if (stat (name_buf, &info) == 0) /* file exists? */
unlink (name_buf);
G__file_name (name_buf, buf, GRASS_VECT_COOR_ELEMENT, G_mapset ());
Map->head.size = 0;
Map->head.head_size = GV_COOR_HEAD_SIZE;
Vect__write_head (Map);
/* set conversion matrices */
dig_init_portable ( &(Map->head.port), dig__byte_order_out ());
if ( !(dig__write_head (Map)) ) return (-1);
return 0;
}
/* check file size */
int check_coor ( struct Map_info *Map )
{
struct Coor_info CInfo;
long dif;
Vect_coor_info ( Map, &CInfo);
dif = CInfo.size - Map->head.size;
G_debug ( 1, "coor size in head = %ld, real coor file size= %ld",
Map->head.size, CInfo.size);
if ( dif > 0 ) {
G_warning ( "coor files of vector '%s@%s' is larger than it should be "
"(%ld bytes excess).", Map->name, Map->mapset, dif);
} else if ( dif < 0 ) {
G_warning ( "coor files of vector '%s@%s' is shorter than it should be "
"(%ld bytes missing).", Map->name, Map->mapset, -dif);
}
return 1;
}
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