D'autre façons de fournir human_to_ldap pour les filtres de recherches

filter3.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+"""Plus joli"""
+
+import pyparsing
+
+txt = pyparsing.Word("".join(c for c in pyparsing.printables if c not in '=()|&'),exact=1)
+
+ne = pyparsing.Literal('!=')
+eq = pyparsing.Literal('=')
+andop = pyparsing.oneOf('&')
+orop = pyparsing.oneOf('|')
+     
+expr = pyparsing.operatorPrecedence( txt,
+    [
+     (ne, 2, pyparsing.opAssoc.RIGHT),
+     (eq, 2, pyparsing.opAssoc.RIGHT),
+     (andop, 2, pyparsing.opAssoc.LEFT),
+     (orop, 2, pyparsing.opAssoc.LEFT),]
+    )
+
+def simplify(l):
+	if not isinstance(l, list):
+		return l
+	if len(l) == 1: 
+		return simplify(l[0])
+	else:
+		return [simplify(i) for i in l]
+
+def toprefix(l):
+	if not isinstance(l, list):
+		return l
+	op=l[1]
+	args=[toprefix(i) for i in l if i!=op]
+	return [op]+args
+	
+def toldapfilter(l):
+	if not isinstance(l, list):
+		return l
+	op=l[0]
+	if op == "=":
+		return "%s=%s" % (l[1], l[2])
+	elif op == "!=":
+		return "!(%s=%s)" % (l[1], l[2])
+	return op + ''.join(['(%s)' % toldapfilter(i) for i in l[1:]])
+	
+def human_to_ldap(str):
+	return "(%s)" % toldapfilter(toprefix(simplify(expr.parseString(str).asList())))
+