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authorRené 'Necoro' Neumann <necoro@necoro.net>2009-02-21 01:18:24 +0100
committerRené 'Necoro' Neumann <necoro@necoro.net>2009-02-21 01:18:24 +0100
commitdd0919c900761bd76736ff790ca37f144e3de93d (patch)
treed7a6907e14614044fac87b89a3f4bffe25a4eda3 /portato
parent8de1f4514cf29cee9d95de1b6e7c04b14dbe6a74 (diff)
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Use pickle instead of DBM, as this would require additional python modules
Diffstat (limited to '')
-rw-r--r--portato/db/sql.py65
1 files changed, 40 insertions, 25 deletions
diff --git a/portato/db/sql.py b/portato/db/sql.py
index 66da0f3..cb252c1 100644
--- a/portato/db/sql.py
+++ b/portato/db/sql.py
@@ -17,7 +17,11 @@ try:
except ImportError:
from pysqlite2 import dbapi2 as sql
-import anydbm
+try:
+ import cPickle as pickle
+except ImportError:
+ import pickle
+
import hashlib
import os
@@ -113,34 +117,45 @@ class SQLDatabase (Database):
dbpath = os.path.join(SESSION_DIR, "portdirs.db")
db_existed = os.path.exists(dbpath)
- db = anydbm.open(dbpath, "c")
- try:
- if db_existed:
- debug("portdirs.db already existant")
- for key in set(db.keys())- set(hashes.keys()):
- debug("Overlay '%s' has been removed", key)
- del db[key]
- changed = True
-
- for key in hashes.iterkeys():
- if key not in db.keys():
- debug("Overlay '%s' has been added.", key)
- changed = True
+ if db_existed and "pickle" not in self.session:
+ debug("Removing old portdirs.db, as this looks like old DBM format. If it is not - well - no real harm ;)")
+ os.remove(dbpath)
+ db_existed = False
- elif db[key] != hashes[key]:
- debug("Overlay '%s' has been changed.", key)
- changed = True
-
- db[key] = hashes[key]
- else:
- debug("portdirs.db not existant")
+ self.session["pickle"] = True # no need for a certain value
+
+ if db_existed:
+ debug("portdirs.db already existant")
+ with open(dbpath, "rb") as dbfile:
+ db = pickle.load(dbfile)
+
+ # the following could be simplified - losing the debug possibilities
+ # so we keep it as is :)
+ # there shouldn't be so much overlays, that this would result
+ # in performance loss
+
+ for key in set(db.keys()) - set(hashes.keys()):
+ debug("Overlay '%s' has been removed", key)
changed = True
- for key in hashes.iterkeys():
- db[key] = hashes[key]
+
+ for key in hashes.iterkeys():
+
+ if key not in db:
+ debug("Overlay '%s' has been added.", key)
+ changed = True
- finally:
- db.close()
+ elif db[key] != hashes[key]:
+ debug("Overlay '%s' has been changed.", key)
+ changed = True
+
+ else:
+ debug("portdirs.db not existant")
+ changed = True
+
+ if changed:
+ with open(dbpath, "wb") as dbfile:
+ db = pickle.dump(hashes, dbfile, protocol = -1)
return changed