--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/store.py	Thu Jul 24 16:32:51 2008 +0200
@@ -0,0 +1,39 @@
+# store.py - repository store handling for Mercurial
+#
+# Copyright 2008 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms
+# of the GNU General Public License, incorporated herein by reference.
+
+def _buildencodefun():
+    e = '_'
+    win_reserved = [ord(x) for x in '\\:*?"<>|']
+    cmap = dict([ (chr(x), chr(x)) for x in xrange(127) ])
+    for x in (range(32) + range(126, 256) + win_reserved):
+        cmap[chr(x)] = "~%02x" % x
+    for x in range(ord("A"), ord("Z")+1) + [ord(e)]:
+        cmap[chr(x)] = e + chr(x).lower()
+    dmap = {}
+    for k, v in cmap.iteritems():
+        dmap[v] = k
+    def decode(s):
+        i = 0
+        while i < len(s):
+            for l in xrange(1, 4):
+                try:
+                    yield dmap[s[i:i+l]]
+                    i += l
+                    break
+                except KeyError:
+                    pass
+            else:
+                raise KeyError
+    return (lambda s: "".join([cmap[c] for c in s]),
+            lambda s: "".join(list(decode(s))))
+
+encodefilename, decodefilename = _buildencodefun()
+
+def encodedopener(openerfn, fn):
+    def o(path, *args, **kw):
+        return openerfn(fn(path), *args, **kw)
+    return o