open.c File Reference

#include <grass/config.h>
#include <string.h>
#include <grass/gis.h>
#include <unistd.h>
#include <fcntl.h>

Include dependency graph for open.c:

Go to the source code of this file.

Functions

int G__open (char *element, char *name, char *mapset, int mode)
int G_open_new (char *element, char *name)
 open a new database file
int G_open_old (char *element, char *name, char *mapset)
 open a database file for reading
int G_open_update (char *element, char *name)
 open a database file for update
FILE * G_fopen_new (char *element, char *name)
 open a new database file
FILE * G_fopen_old (char *element, char *name, char *mapset)
 open a database file for reading
FILE * G_fopen_append (char *element, char *name)
FILE * G_fopen_modify (char *element, char *name)


Function Documentation

int G__open ( char *  element,
char *  name,
char *  mapset,
int  mode 
)

FILE* G_fopen_append ( char *  element,
char *  name 
)

Definition at line 274 of file open.c.

References G__open(), and G_mapset().

FILE* G_fopen_modify ( char *  element,
char *  name 
)

Definition at line 286 of file open.c.

References G__open(), and G_mapset().

FILE* G_fopen_new ( char *  element,
char *  name 
)

open a new database file

The database file name under the element in the current mapset is created and opened for writing (but not reading). The UNIX fopen( ) routine, with "w" write mode, is used to open the file. If the file does not exist, the NULL pointer is returned. Otherwise the file is positioned at the end of the file and the file descriptor from the fopen( ) is returned.

Parameters:
element 
name 
Returns:
FILE *

Definition at line 233 of file open.c.

References G__open(), and G_mapset().

Referenced by G__put_window(), G__quant_export(), G__write_cats(), G_put_3dview(), G_put_cell_title(), G_put_cellhd(), G_write_colors(), G_write_history(), and G_write_range().

FILE* G_fopen_old ( char *  element,
char *  name,
char *  mapset 
)

open a database file for reading

The database file name under the element in the specified mapset is opened for reading (but not for writing). The UNIX fopen( ) routine, with "r" read mode, is used to open the file. If the file does not exist, the NULL pointer is returned. Otherwise the file descriptor from the fopen( ) is returned.

Parameters:
element 
name 
mapset 
Returns:
FILE *

Definition at line 262 of file open.c.

References G__open().

Referenced by G__get_window(), G__quant_import(), G__read_cats(), G_get_3dview(), G_get_cell_title(), G_get_cellhd(), G_get_dig_title(), G_put_cell_title(), G_read_histogram(), G_read_history(), and G_read_range().

int G_open_new ( char *  element,
char *  name 
)

open a new database file

The database file name under the element in the current mapset is created and opened for writing (but not reading). The UNIX open( ) routine is used to open the file. If the file does not exist, -1 is returned. Otherwise the file is positioned at the end of the file and the file descriptor from the open( ) is returned.

Parameters:
element 
name 
Returns:
int

Definition at line 167 of file open.c.

References G__open(), and G_mapset().

Referenced by G_write_fp_range().

int G_open_old ( char *  element,
char *  name,
char *  mapset 
)

open a database file for reading

The database file name under the element in the specified mapset is opened for reading (but not for writing). The UNIX open( ) routine is used to open the file. If the file does not exist, -1 is returned. Otherwise the file descriptor from the open( ) is returned.

Parameters:
element 
name 
mapset 
Returns:
int

Definition at line 188 of file open.c.

References G__open().

Referenced by G__open_cell_old(), and G_read_fp_range().

int G_open_update ( char *  element,
char *  name 
)

open a database file for update

The database file name under the element in the current mapset is opened for reading and writing. The UNIX open( ) routine is used to open the file. If the file does not exist, -1 is returned. Otherwise the file is positioned at the end of the file and the file descriptor from the open( ) is returned.

Parameters:
element 
name 
Returns:
int

Definition at line 208 of file open.c.

References G__open(), and G_mapset().


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