1 files changed, 57 insertions, 0 deletions
diff --git a/addons/document/dict_tools.py b/addons/document/dict_tools.py
new file mode 100644
index 00000000000..10d2fdc69f3
--- /dev/null
+++ b/addons/document/dict_tools.py
@@ -0,0 +1,57 @@
+# -*- encoding: utf-8 -*-
+# Copyright P. Christeas <p_christ@hol.gr> 2008-2010
+# Copyright 2010 OpenERP SA. http://www.openerp.com
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+###############################################################################
+
+
+def dict_merge(*dicts):
+    """ Return a dict with all values of dicts
+    """
+    res = {}
+    for d in dicts:
+        res.update(d)
+    return res
+
+def dict_merge2(*dicts):
+    """ Return a dict with all values of dicts.
+        If some key appears twice and contains iterable objects, the values
+        are merged (instead of overwritten).
+    """
+    res = {}
+    for d in dicts:
+        for k in d.keys():
+            if k in res and isinstance(res[k], (list, tuple)):
+                res[k] = res[k] + d[k]
+            elif k in res and isinstance(res[k], dict):
+                res[k].update(d[k])
+            else:
+                res[k] = d[k]
+    return res
+
+def dict_filter(srcdic, keys, res=None):
+    ''' Return a copy of srcdic that has only keys set.
+    If any of keys are missing from srcdic, the result won't have them, 
+    either.
+    @param res If given, result will be updated there, instead of a new dict.
+    '''
+    if res is None:
+        res = {}
+    for k in keys:
+        if k in srcdic:
+            res[k] = srcdic[k]
+    return res
+
+#eof