GRASS Programmer's Manual 6.4.1(2011)
is.c
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00001 
00017 #include <stdio.h>
00018 #include <string.h>
00019 #include <unistd.h>
00020 #include <grass/gis.h>
00021 
00022 
00023 static int test_path_file(const char *, const char *);
00024 
00025 
00026 static int test_path_file(const char *path, const char *file)
00027 {
00028     int ret;
00029     char *buf;
00030 
00031     buf = (char *)G_malloc(strlen(path) + strlen(file) + 2);
00032     sprintf(buf, "%s/%s", path, file);
00033 
00034     ret = access(buf, F_OK);
00035     G_free(buf);
00036 
00037     if (ret == 0)
00038         return 1;
00039 
00040     return 0;
00041 }
00042 
00043 
00053 int G_is_gisbase(const char *path)
00054 {
00055     return test_path_file(path, "etc/element_list");
00056 }
00057 
00058 
00067 int G_is_location(const char *path)
00068 {
00069     return test_path_file(path, "PERMANENT/DEFAULT_WIND");
00070 }
00071 
00072 
00081 int G_is_mapset(const char *path)
00082 {
00083     return test_path_file(path, "WIND");
00084 }
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