nextep: Remove empty data directories when unsetting values.

diff --git a/nextep.c b/nextep.c
index 0a8b6b6..151db93 100644 (file)
--- a/nextep.c
+++ b/nextep.c
@@ -3,6 +3,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <libgen.h>
+#include <dirent.h>
 #include <errno.h>
 #include <sys/stat.h>
 
@@ -15,6 +16,26 @@ static int ensuredir(char *base, char *dir)
     return(0);
 }
 
+static void checkempty(char *dir)
+{
+    DIR *dh;
+    int empty;
+    struct dirent *de;
+    
+    if((dh = opendir(dir)) == NULL)
+       return;
+    empty = 1;
+    while((de = readdir(dh)) != NULL) {
+       if(de->d_name[0] != '.') {
+           empty = 0;
+           break;
+       }
+    }
+    closedir(dh);
+    if(empty)
+       rmdir(dir);
+}
+
 static void usage(FILE *out)
 {
     fprintf(out, "usage: nextep [-h] [-f FILE] [-s SET-VALUE] [DIR]\n");
@@ -81,6 +102,7 @@ int main(int argc, char **argv)
            fprintf(stderr, "nextep: %s: %s\n", fpath, strerror(errno));
            exit(1);
        }
+       checkempty(base);
     } else {
        if(ensuredir(buf, base)) {
            fprintf(stderr, "nextep: %s: %s\n", base, strerror(errno));