.

wcfs/testprog/wcfs_commit_tree_deltas.py

@@ -2,6 +2,22 @@
 # -*- coding: utf-8 -*-
 # Copyright (C) 2020  Nexedi SA and Contributors.
 #                     Kirill Smelkov <kirr@nexedi.com>
+#
+# This program is free software: you can Use, Study, Modify and Redistribute
+# it under the terms of the GNU General Public License version 3, or (at your
+# option) any later version, as published by the Free Software Foundation.
+#
+# You can also Link and Combine this program with other software covered by
+# the terms of any of the Free Software licenses or any of the Open Source
+# Initiative approved licenses and Convey the resulting work. Corresponding
+# source of such a combination shall include the source code for all other
+# software used.
+#
+# This program is distributed WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# See COPYING file for full licensing terms.
+# See https://www.nexedi.com/licensing for rationale and options.
 """Program treedelta-genallstructs commits subset of all possible tree changes
 in between two trees specified key->value sets.
 
@@ -15,8 +31,8 @@ correspondingly.
 
 For every made commit it prints to stdout:
 
-# <tree1> -> <tree2>
-tid <tid>
+
+tid <tid>   # <tree1> -> <tree2>
 tree <oid>
 δ
 <LF>
@@ -28,6 +44,44 @@ XXX
 from __future__ import print_function, absolute_import
 
 import sys
+from ZODB import DB
+import transaction
+from wendelin.wcfs.internal import xbtree
+
+# init initializes ...
+@func
+def init(zstor):
+    db = DB(zstor);     defer(db.close)
+    zconn = db.open();  defer(zconn.close)
+    root  = zconn.root()
+
+    # valdict is {} for values
+    # {} v -> ZBlk(v)
+    valdict = root.setdefault('treedelta/values', {})
+    for v in b'abcdefghi':
+        valdict[v] = ZBlk(v)
+
+    transaction.commit()
+
+# XXX
+#
+# kv: k₁:v₁,k₂:v₂,...
+@func
+def treedeltaGenAllStructs(zstor, kv1, kv2, n):
+    db = DB(zstor);     defer(db.close)
+    zconn = db.open();  defer(zconn.close)
+    root  = zconn.root()
+
+    valdict = root['treedelta/values']
+    # vdecode decodes value text into value object, e.g. 'a' -> ZBlk(a)
+    def vdecode(vtxt): # -> vobj
+        return valdict[vtxt]
+    # vencode encodes value object into value text, e.g. ZBlk(a) -> 'a'
+    def vencode(vobj): # -> vtxt
+        for (k,v) in valdict.items():
+            if v is vobj:
+                return k
+        raise KeyError("%r not found in value registry" % (vobj,))
 
 
 def main():
@@ -36,8 +90,7 @@ def main():
         sys.exit(1)
 
     n = int(sys.argv[1])
-    zurl, kv1, kv2 = sys.argv[2:]
-
+    zurl, kv1, kv2 = sys.argv[2:]   # XXX kv decode
 
 
 if __name__ == '__main__':