GRASS GIS 7 Programmer's Manual
7.9.dev(2021)-e5379bbd7
empty.c
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/*!
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\file lib/manage/empty.c
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\brief Manage Library - Check if element is empty
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(C) 2001-2011 by the GRASS Development Team
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This program is free software under the GNU General Public License
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(>=v2). Read the file COPYING that comes with GRASS for details.
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\author Original author CERL
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*/
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/* look for at least one file in the element */
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#include <sys/types.h>
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#include <dirent.h>
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#include <
grass/gis.h
>
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/*!
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\brief Check if element is empty
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\param elem element name
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\return 1 empty
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\return 0 not empty
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*/
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int
M__empty
(
char
*elem)
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{
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DIR *dirp;
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struct
dirent *dp;
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char
dir[1024];
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int
any;
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G_file_name
(dir, elem,
""
,
G_mapset
());
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any = 0;
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if
((dirp =
opendir
(dir)) !=
NULL
) {
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while
(!any && (dp =
readdir
(dirp)) !=
NULL
) {
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if
(dp->d_name[0] !=
'.'
)
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any = 1;
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}
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closedir(dirp);
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}
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return
any == 0;
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}
opendir
DIR * opendir()
G_file_name
char * G_file_name(char *, const char *, const char *, const char *)
Builds full path names to GIS data files.
Definition:
file_name.c:38
NULL
#define NULL
Definition:
ccmath.h:32
gis.h
readdir
dir_entry * readdir()
G_mapset
const char * G_mapset(void)
Get current mapset name.
Definition:
gis/mapset.c:33
M__empty
int M__empty(char *elem)
Check if element is empty.
Definition:
empty.c:28
lib
manage
empty.c
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