Search xsetbg.db in XDG directories

[xsetbg.git] / xsetbg_db.py

diff --git a/xsetbg_db.py b/xsetbg_db.py
old mode 100644 (file)
new mode 100755 (executable)
index 54bc62e..c335168
--- a/xsetbg_db.py
+++ b/xsetbg_db.py
@@ -1,3 +1,4 @@
+#! /usr/bin/env python
 """XSetBg database
 
 """
@@ -13,9 +14,34 @@ import os
 import shelve
 from xsetbg_conf import xsetbg_conf
 
-xsetbg_db_path = os.path.expanduser(xsetbg_conf.get('xsetbg', 'database'))
+db_dirs = []
+try:
+    db_file = xsetbg_conf.get('xsetbg', 'database')
+except:
+    db_file = None
+
+if not db_file:
+    if 'XDG_CACHE_HOME' in os.environ:
+        db_dirs.append(os.environ['XDG_CACHE_HOME'])
+    home_cache = os.path.expanduser('~/.cache')
+    if home_cache not in db_dirs:
+        db_dirs.append(home_cache)
+    db_dirs.append(os.path.dirname(os.path.abspath(__file__)))
+
+    for d in db_dirs:
+        db_file = os.path.join(d, 'xsetbg.db')
+        if os.path.exists(db_file):
+            break
+    else:
+        raise RuntimeError("Cannot find xsetbg.db; searched %s", db_dirs)
+
+xsetbg_db_path = db_file
 
 try:
     xsetbg_db = shelve.open(xsetbg_db_path, 'r')
 except anydbm.error:
     xsetbg_db = None
+
+if __name__ == '__main__':
+    print "DB dirs:", db_dirs
+    print "DB file:", db_file