added xmlByteConsumed() interface updated the benchmark rebuilt the docs

* parserInternals.c xmlIO.c encoding.c include/libxml/parser.h
  include/libxml/xmlIO.h: added xmlByteConsumed() interface
* doc/*: updated the benchmark rebuilt the docs
* python/tests/Makefile.am python/tests/indexes.py: added a
  specific regression test for xmlByteConsumed()
* include/libxml/encoding.h rngparser.c tree.c: small cleanups
Daniel

python/tests/indexes.py

@@ -0,0 +1,112 @@
+#!/usr/bin/python -u
+import sys
+import libxml2
+
+# Memory debug specific
+libxml2.debugMemory(1)
+
+ctxt = None
+
+class callback:
+    def __init__(self, startd, starte, ende, delta, endd):
+        self.startd = startd
+        self.starte = starte
+        self.ende = ende
+        self.endd = endd
+	self.delta = delta
+	self.count = 0
+
+    def startDocument(self):
+        global ctxt
+	if ctxt.byteConsumed() != self.startd:
+	    print "document start at wrong index: %d expecting %d\n" % (
+	          ctxt.byteConsumed(), self.startd)
+            sys.exit(1)
+
+    def endDocument(self):
+        global ctxt
+	expect = self.ende + self.delta * (self.count - 1) + self.endd
+	if ctxt.byteConsumed() != expect:
+	    print "document end at wrong index: %d expecting %d\n" % (
+	          ctxt.byteConsumed(), expect)
+            sys.exit(1)
+
+    def startElement(self, tag, attrs):
+        global ctxt
+	if tag == "bar1":
+	    expect = self.starte + self.delta * self.count
+	    if ctxt.byteConsumed() != expect:
+		print "element start at wrong index: %d expecting %d\n" % (
+		      ctxt.byteConsumed(), expect)
+		sys.exit(1)
+	    
+
+    def endElement(self, tag):
+        global ctxt
+	if tag == "bar1":
+	    expect = self.ende + self.delta * self.count
+	    if ctxt.byteConsumed() != expect:
+		print "element end at wrong index: %d expecting %d\n" % (
+		      ctxt.byteConsumed(), expect)
+		sys.exit(1)
+	    self.count = self.count + 1
+
+    def characters(self, data):
+        pass
+
+#
+# First run a pure UTF-8 test
+#
+handler = callback(0, 13, 27, 198, 183)
+ctxt = libxml2.createPushParser(handler, "<foo>\n", 6, "test.xml")
+chunk = """  <bar1>chars1</bar1>
+  <bar2>chars2</bar2>
+  <bar3>chars3</bar3>
+  <bar4>chars4</bar4>
+  <bar5>chars5</bar5>
+  <bar6>&lt;s6</bar6>
+  <bar7>chars7</bar7>
+  <bar8>&#38;8</bar8>
+  <bar9>chars9</bar9>
+"""
+i = 0
+while i < 10000:
+    ctxt.parseChunk(chunk, len(chunk), 0)
+    i = i + 1
+chunk = "</foo>"
+ctxt.parseChunk(chunk, len(chunk), 1)
+ctxt=None
+
+#
+# Then run a test relying on ISO-Latin-1
+#
+handler = callback(43, 57, 71, 198, 183)
+chunk="""<?xml version="1.0" encoding="ISO-8859-1"?>
+<foo>
+"""
+ctxt = libxml2.createPushParser(handler, chunk, len(chunk), "test.xml")
+chunk = """  <bar1>chars1</bar1>
+  <bar2>chars2</bar2>
+  <bar3>chars3</bar3>
+  <bar4>ch<63>rs4</bar4>
+  <bar5>chars5</bar5>
+  <bar6>&lt;s6</bar6>
+  <bar7>chars7</bar7>
+  <bar8>&#38;8</bar8>
+  <bar9>tr<74>s 9</bar9>
+"""
+i = 0
+while i < 10000:
+    ctxt.parseChunk(chunk, len(chunk), 0)
+    i = i + 1
+chunk = "</foo>"
+ctxt.parseChunk(chunk, len(chunk), 1)
+ctxt=None
+
+# Memory debug specific
+libxml2.cleanupParser()
+if libxml2.debugMemory(1) == 0:
+    print "OK"
+else:
+    print "Memory leak %d bytes" % (libxml2.debugMemory(1))
+    libxml2.dumpMemory()