Merge commit '0f851b6f17365c29b56d6a17564d58a33120508a' as 'libxml2'

1 files changed, 1228 insertions, 0 deletions

diff --git a/libxml2/python/generator.py b/libxml2/python/generator.py
new file mode 100755
index 0000000..c0cb3ad
--- /dev/null
+++ b/libxml2/python/generator.py
@@ -0,0 +1,1228 @@
+#!/usr/bin/python -u
+#
+# generate python wrappers from the XML API description
+#
+
+functions = {}
+enums = {} # { enumType: { enumConstant: enumValue } }
+
+import os
+import sys
+import string
+
+if __name__ == "__main__":
+    # launched as a script
+    srcPref = os.path.dirname(sys.argv[0])
+else:
+    # imported
+    srcPref = os.path.dirname(__file__)
+
+#######################################################################
+#
+#  That part if purely the API acquisition phase from the
+#  XML API description
+#
+#######################################################################
+import os
+import xml.sax
+
+debug = 0
+
+def getparser():
+    # Attach parser to an unmarshalling object. return both objects.
+    target = docParser()
+    parser = xml.sax.make_parser()
+    parser.setContentHandler(target)
+    return parser, target
+
+class docParser(xml.sax.handler.ContentHandler):
+    def __init__(self):
+        self._methodname = None
+        self._data = []
+        self.in_function = 0
+
+        self.startElement = self.start
+        self.endElement = self.end
+        self.characters = self.data
+
+    def close(self):
+        if debug:
+            print("close")
+
+    def getmethodname(self):
+        return self._methodname
+
+    def data(self, text):
+        if debug:
+            print("data %s" % text)
+        self._data.append(text)
+
+    def start(self, tag, attrs):
+        if debug:
+            print("start %s, %s" % (tag, attrs))
+        if tag == 'function':
+            self._data = []
+            self.in_function = 1
+            self.function = None
+            self.function_cond = None
+            self.function_args = []
+            self.function_descr = None
+            self.function_return = None
+            self.function_file = None
+            if 'name' in attrs.keys():
+                self.function = attrs['name']
+            if 'file' in attrs.keys():
+                self.function_file = attrs['file']
+        elif tag == 'cond':
+            self._data = []
+        elif tag == 'info':
+            self._data = []
+        elif tag == 'arg':
+            if self.in_function == 1:
+                self.function_arg_name = None
+                self.function_arg_type = None
+                self.function_arg_info = None
+                if 'name' in attrs.keys():
+                    self.function_arg_name = attrs['name']
+                if 'type' in attrs.keys():
+                    self.function_arg_type = attrs['type']
+                if 'info' in attrs.keys():
+                    self.function_arg_info = attrs['info']
+        elif tag == 'return':
+            if self.in_function == 1:
+                self.function_return_type = None
+                self.function_return_info = None
+                self.function_return_field = None
+                if 'type' in attrs.keys():
+                    self.function_return_type = attrs['type']
+                if 'info' in attrs.keys():
+                    self.function_return_info = attrs['info']
+                if 'field' in attrs.keys():
+                    self.function_return_field = attrs['field']
+        elif tag == 'enum':
+            enum(attrs['type'],attrs['name'],attrs['value'])
+
+    def end(self, tag):
+        if debug:
+            print("end %s" % tag)
+        if tag == 'function':
+            if self.function != None:
+                function(self.function, self.function_descr,
+                         self.function_return, self.function_args,
+                         self.function_file, self.function_cond)
+                self.in_function = 0
+        elif tag == 'arg':
+            if self.in_function == 1:
+                self.function_args.append([self.function_arg_name,
+                                           self.function_arg_type,
+                                           self.function_arg_info])
+        elif tag == 'return':
+            if self.in_function == 1:
+                self.function_return = [self.function_return_type,
+                                        self.function_return_info,
+                                        self.function_return_field]
+        elif tag == 'info':
+            str = ''
+            for c in self._data:
+                str = str + c
+            if self.in_function == 1:
+                self.function_descr = str
+        elif tag == 'cond':
+            str = ''
+            for c in self._data:
+                str = str + c
+            if self.in_function == 1:
+                self.function_cond = str
+
+
+def function(name, desc, ret, args, file, cond):
+    functions[name] = (desc, ret, args, file, cond)
+
+def enum(type, name, value):
+    if type not in enums:
+        enums[type] = {}
+    enums[type][name] = value
+
+#######################################################################
+#
+#  Some filtering rukes to drop functions/types which should not
+#  be exposed as-is on the Python interface
+#
+#######################################################################
+
+skipped_modules = {
+    'xmlmemory': None,
+    'DOCBparser': None,
+    'SAX': None,
+    'hash': None,
+    'list': None,
+    'threads': None,
+#    'xpointer': None,
+}
+skipped_types = {
+    'int *': "usually a return type",
+    'xmlSAXHandlerPtr': "not the proper interface for SAX",
+    'htmlSAXHandlerPtr': "not the proper interface for SAX",
+    'xmlRMutexPtr': "thread specific, skipped",
+    'xmlMutexPtr': "thread specific, skipped",
+    'xmlGlobalStatePtr': "thread specific, skipped",
+    'xmlListPtr': "internal representation not suitable for python",
+    'xmlBufferPtr': "internal representation not suitable for python",
+    'FILE *': None,
+}
+
+#######################################################################
+#
+#  Table of remapping to/from the python type or class to the C
+#  counterpart.
+#
+#######################################################################
+
+py_types = {
+    'void': (None, None, None, None),
+    'int':  ('i', None, "int", "int"),
+    'long':  ('l', None, "long", "long"),
+    'double':  ('d', None, "double", "double"),
+    'unsigned int':  ('i', None, "int", "int"),
+    'xmlChar':  ('c', None, "int", "int"),
+    'unsigned char *':  ('z', None, "charPtr", "char *"),
+    'char *':  ('z', None, "charPtr", "char *"),
+    'const char *':  ('z', None, "charPtrConst", "const char *"),
+    'xmlChar *':  ('z', None, "xmlCharPtr", "xmlChar *"),
+    'const xmlChar *':  ('z', None, "xmlCharPtrConst", "const xmlChar *"),
+    'xmlNodePtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlNodePtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlNode *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlNode *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlDtdPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlDtdPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlDtd *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlDtd *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlAttrPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlAttrPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlAttr *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlAttr *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlEntityPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlEntityPtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlEntity *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const xmlEntity *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlElementPtr':  ('O', "xmlElement", "xmlElementPtr", "xmlElementPtr"),
+    'const xmlElementPtr':  ('O', "xmlElement", "xmlElementPtr", "xmlElementPtr"),
+    'xmlElement *':  ('O', "xmlElement", "xmlElementPtr", "xmlElementPtr"),
+    'const xmlElement *':  ('O', "xmlElement", "xmlElementPtr", "xmlElementPtr"),
+    'xmlAttributePtr':  ('O', "xmlAttribute", "xmlAttributePtr", "xmlAttributePtr"),
+    'const xmlAttributePtr':  ('O', "xmlAttribute", "xmlAttributePtr", "xmlAttributePtr"),
+    'xmlAttribute *':  ('O', "xmlAttribute", "xmlAttributePtr", "xmlAttributePtr"),
+    'const xmlAttribute *':  ('O', "xmlAttribute", "xmlAttributePtr", "xmlAttributePtr"),
+    'xmlNsPtr':  ('O', "xmlNode", "xmlNsPtr", "xmlNsPtr"),
+    'const xmlNsPtr':  ('O', "xmlNode", "xmlNsPtr", "xmlNsPtr"),
+    'xmlNs *':  ('O', "xmlNode", "xmlNsPtr", "xmlNsPtr"),
+    'const xmlNs *':  ('O', "xmlNode", "xmlNsPtr", "xmlNsPtr"),
+    'xmlDocPtr':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'const xmlDocPtr':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'xmlDoc *':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'const xmlDoc *':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'htmlDocPtr':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'const htmlDocPtr':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'htmlDoc *':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'const htmlDoc *':  ('O', "xmlNode", "xmlDocPtr", "xmlDocPtr"),
+    'htmlNodePtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const htmlNodePtr':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'htmlNode *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'const htmlNode *':  ('O', "xmlNode", "xmlNodePtr", "xmlNodePtr"),
+    'xmlXPathContextPtr':  ('O', "xmlXPathContext", "xmlXPathContextPtr", "xmlXPathContextPtr"),
+    'xmlXPathContext *':  ('O', "xpathContext", "xmlXPathContextPtr", "xmlXPathContextPtr"),
+    'xmlXPathParserContextPtr':  ('O', "xmlXPathParserContext", "xmlXPathParserContextPtr", "xmlXPathParserContextPtr"),
+    'xmlParserCtxtPtr': ('O', "parserCtxt", "xmlParserCtxtPtr", "xmlParserCtxtPtr"),
+    'xmlParserCtxt *': ('O', "parserCtxt", "xmlParserCtxtPtr", "xmlParserCtxtPtr"),
+    'htmlParserCtxtPtr': ('O', "parserCtxt", "xmlParserCtxtPtr", "xmlParserCtxtPtr"),
+    'htmlParserCtxt *': ('O', "parserCtxt", "xmlParserCtxtPtr", "xmlParserCtxtPtr"),
+    'xmlValidCtxtPtr': ('O', "ValidCtxt", "xmlValidCtxtPtr", "xmlValidCtxtPtr"),
+    'xmlCatalogPtr': ('O', "catalog", "xmlCatalogPtr", "xmlCatalogPtr"),
+    'FILE *': ('O', "File", "FILEPtr", "FILE *"),
+    'xmlURIPtr': ('O', "URI", "xmlURIPtr", "xmlURIPtr"),
+    'xmlErrorPtr': ('O', "Error", "xmlErrorPtr", "xmlErrorPtr"),
+    'xmlOutputBufferPtr': ('O', "outputBuffer", "xmlOutputBufferPtr", "xmlOutputBufferPtr"),
+    'xmlParserInputBufferPtr': ('O', "inputBuffer", "xmlParserInputBufferPtr", "xmlParserInputBufferPtr"),
+    'xmlRegexpPtr': ('O', "xmlReg", "xmlRegexpPtr", "xmlRegexpPtr"),
+    'xmlTextReaderLocatorPtr': ('O', "xmlTextReaderLocator", "xmlTextReaderLocatorPtr", "xmlTextReaderLocatorPtr"),
+    'xmlTextReaderPtr': ('O', "xmlTextReader", "xmlTextReaderPtr", "xmlTextReaderPtr"),
+    'xmlRelaxNGPtr': ('O', "relaxNgSchema", "xmlRelaxNGPtr", "xmlRelaxNGPtr"),
+    'xmlRelaxNGParserCtxtPtr': ('O', "relaxNgParserCtxt", "xmlRelaxNGParserCtxtPtr", "xmlRelaxNGParserCtxtPtr"),
+    'xmlRelaxNGValidCtxtPtr': ('O', "relaxNgValidCtxt", "xmlRelaxNGValidCtxtPtr", "xmlRelaxNGValidCtxtPtr"),
+    'xmlSchemaPtr': ('O', "Schema", "xmlSchemaPtr", "xmlSchemaPtr"),
+    'xmlSchemaParserCtxtPtr': ('O', "SchemaParserCtxt", "xmlSchemaParserCtxtPtr", "xmlSchemaParserCtxtPtr"),
+    'xmlSchemaValidCtxtPtr': ('O', "SchemaValidCtxt", "xmlSchemaValidCtxtPtr", "xmlSchemaValidCtxtPtr"),
+}
+
+py_return_types = {
+    'xmlXPathObjectPtr':  ('O', "foo", "xmlXPathObjectPtr", "xmlXPathObjectPtr"),
+}
+
+unknown_types = {}
+
+foreign_encoding_args = (
+    'htmlCreateMemoryParserCtxt',
+    'htmlCtxtReadMemory',
+    'htmlParseChunk',
+    'htmlReadMemory',
+    'xmlCreateMemoryParserCtxt',
+    'xmlCtxtReadMemory',
+    'xmlCtxtResetPush',
+    'xmlParseChunk',
+    'xmlParseMemory',
+    'xmlReadMemory',
+    'xmlRecoverMemory',
+)
+
+#######################################################################
+#
+#  This part writes the C <-> Python stubs libxml2-py.[ch] and
+#  the table libxml2-export.c to add when registrering the Python module
+#
+#######################################################################
+
+# Class methods which are written by hand in libxml.c but the Python-level
+# code is still automatically generated (so they are not in skip_function()).
+skip_impl = (
+    'xmlSaveFileTo',
+    'xmlSaveFormatFileTo',
+)
+
+def skip_function(name):
+    if name[0:12] == "xmlXPathWrap":
+        return 1
+    if name == "xmlFreeParserCtxt":
+        return 1
+    if name == "xmlCleanupParser":
+        return 1
+    if name == "xmlFreeTextReader":
+        return 1
+#    if name[0:11] == "xmlXPathNew":
+#        return 1
+    # the next function is defined in libxml.c
+    if name == "xmlRelaxNGFreeValidCtxt":
+        return 1
+    if name == "xmlFreeValidCtxt":
+        return 1
+    if name == "xmlSchemaFreeValidCtxt":
+        return 1
+
+#
+# Those are skipped because the Const version is used of the bindings
+# instead.
+#
+    if name == "xmlTextReaderBaseUri":
+        return 1
+    if name == "xmlTextReaderLocalName":
+        return 1
+    if name == "xmlTextReaderName":
+        return 1
+    if name == "xmlTextReaderNamespaceUri":
+        return 1
+    if name == "xmlTextReaderPrefix":
+        return 1
+    if name == "xmlTextReaderXmlLang":
+        return 1
+    if name == "xmlTextReaderValue":
+        return 1
+    if name == "xmlOutputBufferClose": # handled by by the superclass
+        return 1
+    if name == "xmlOutputBufferFlush": # handled by by the superclass
+        return 1
+    if name == "xmlErrMemory":
+        return 1
+
+    if name == "xmlValidBuildContentModel":
+        return 1
+    if name == "xmlValidateElementDecl":
+        return 1
+    if name == "xmlValidateAttributeDecl":
+        return 1
+    if name == "xmlPopInputCallbacks":
+        return 1
+
+    return 0
+
+def print_function_wrapper(name, output, export, include):
+    global py_types
+    global unknown_types
+    global functions
+    global skipped_modules
+
+    try:
+        (desc, ret, args, file, cond) = functions[name]
+    except:
+        print("failed to get function %s infos")
+        return
+
+    if file in skipped_modules:
+        return 0
+    if skip_function(name) == 1:
+        return 0
+    if name in skip_impl:
+        # Don't delete the function entry in the caller.
+        return 1
+
+    c_call = ""
+    format=""
+    format_args=""
+    c_args=""
+    c_return=""
+    c_convert=""
+    c_release=""
+    num_bufs=0
+    for arg in args:
+        # This should be correct
+        if arg[1][0:6] == "const ":
+            arg[1] = arg[1][6:]
+        c_args = c_args + "    %s %s;\n" % (arg[1], arg[0])
+        if arg[1] in py_types:
+            (f, t, n, c) = py_types[arg[1]]
+            if (f == 'z') and (name in foreign_encoding_args) and (num_bufs == 0):
+                f = 's#'
+            if f != None:
+                format = format + f
+            if t != None:
+                format_args = format_args + ", &pyobj_%s" % (arg[0])
+                c_args = c_args + "    PyObject *pyobj_%s;\n" % (arg[0])
+                c_convert = c_convert + \
+                   "    %s = (%s) Py%s_Get(pyobj_%s);\n" % (arg[0],
+                   arg[1], t, arg[0])
+            else:
+                format_args = format_args + ", &%s" % (arg[0])
+            if f == 's#':
+                format_args = format_args + ", &py_buffsize%d" % num_bufs
+                c_args = c_args + "    int py_buffsize%d;\n" % num_bufs
+                num_bufs = num_bufs + 1
+            if c_call != "":
+                c_call = c_call + ", "
+            c_call = c_call + "%s" % (arg[0])
+            if t == "File":
+                c_release = c_release + \
+		            "    PyFile_Release(%s);\n" % (arg[0])
+        else:
+            if arg[1] in skipped_types:
+                return 0
+            if arg[1] in unknown_types:
+                lst = unknown_types[arg[1]]
+                lst.append(name)
+            else:
+                unknown_types[arg[1]] = [name]
+            return -1
+    if format != "":
+        format = format + ":%s" % (name)
+
+    if ret[0] == 'void':
+        if file == "python_accessor":
+            if args[1][1] == "char *" or args[1][1] == "xmlChar *":
+                c_call = "\n    if (%s->%s != NULL) xmlFree(%s->%s);\n" % (
+                                 args[0][0], args[1][0], args[0][0], args[1][0])
+                c_call = c_call + "    %s->%s = (%s)xmlStrdup((const xmlChar *)%s);\n" % (args[0][0],
+                                 args[1][0], args[1][1], args[1][0])
+            else:
+                c_call = "\n    %s->%s = %s;\n" % (args[0][0], args[1][0],
+                                                   args[1][0])
+        else:
+            c_call = "\n    %s(%s);\n" % (name, c_call)
+        ret_convert = "    Py_INCREF(Py_None);\n    return(Py_None);\n"
+    elif ret[0] in py_types:
+        (f, t, n, c) = py_types[ret[0]]
+        c_return = c_return + "    %s c_retval;\n" % (ret[0])
+        if file == "python_accessor" and ret[2] != None:
+            c_call = "\n    c_retval = %s->%s;\n" % (args[0][0], ret[2])
+        else:
+            c_call = "\n    c_retval = %s(%s);\n" % (name, c_call)
+        ret_convert = "    py_retval = libxml_%sWrap((%s) c_retval);\n" % (n,c)
+        ret_convert = ret_convert + "    return(py_retval);\n"
+    elif ret[0] in py_return_types:
+        (f, t, n, c) = py_return_types[ret[0]]
+        c_return = c_return + "    %s c_retval;\n" % (ret[0])
+        c_call = "\n    c_retval = %s(%s);\n" % (name, c_call)
+        ret_convert = "    py_retval = libxml_%sWrap((%s) c_retval);\n" % (n,c)
+        ret_convert = ret_convert + "    return(py_retval);\n"
+    else:
+        if ret[0] in skipped_types:
+            return 0
+        if ret[0] in unknown_types:
+            lst = unknown_types[ret[0]]
+            lst.append(name)
+        else:
+            unknown_types[ret[0]] = [name]
+        return -1
+
+    if cond != None and cond != "":
+        include.write("#if %s\n" % cond)
+        export.write("#if %s\n" % cond)
+        output.write("#if %s\n" % cond)
+
+    include.write("PyObject * ")
+    include.write("libxml_%s(PyObject *self, PyObject *args);\n" % (name))
+
+    export.write("    { (char *)\"%s\", libxml_%s, METH_VARARGS, NULL },\n" %
+                 (name, name))
+
+    if file == "python":
+        # Those have been manually generated
+        if cond != None and cond != "":
+            include.write("#endif\n")
+            export.write("#endif\n")
+            output.write("#endif\n")
+        return 1
+    if file == "python_accessor" and ret[0] != "void" and ret[2] is None:
+        # Those have been manually generated
+        if cond != None and cond != "":
+            include.write("#endif\n")
+            export.write("#endif\n")
+            output.write("#endif\n")
+        return 1
+
+    output.write("PyObject *\n")
+    output.write("libxml_%s(PyObject *self ATTRIBUTE_UNUSED," % (name))
+    output.write(" PyObject *args")
+    if format == "":
+        output.write(" ATTRIBUTE_UNUSED")
+    output.write(") {\n")
+    if ret[0] != 'void':
+        output.write("    PyObject *py_retval;\n")
+    if c_return != "":
+        output.write(c_return)
+    if c_args != "":
+        output.write(c_args)
+    if format != "":
+        output.write("\n    if (!PyArg_ParseTuple(args, (char *)\"%s\"%s))\n" %
+                     (format, format_args))
+        output.write("        return(NULL);\n")
+    if c_convert != "":
+        output.write(c_convert)
+
+    output.write(c_call)
+    if c_release != "":
+        output.write(c_release)
+    output.write(ret_convert)
+    output.write("}\n\n")
+    if cond != None and cond != "":
+        include.write("#endif /* %s */\n" % cond)
+        export.write("#endif /* %s */\n" % cond)
+        output.write("#endif /* %s */\n" % cond)
+    return 1
+
+def buildStubs():
+    global py_types
+    global py_return_types
+    global unknown_types
+
+    try:
+        f = open(os.path.join(srcPref,"libxml2-api.xml"))
+        data = f.read()
+        (parser, target)  = getparser()
+        parser.feed(data)
+        parser.close()
+    except IOError as msg:
+        try:
+            f = open(os.path.join(srcPref,"..","doc","libxml2-api.xml"))
+            data = f.read()
+            (parser, target)  = getparser()
+            parser.feed(data)
+            parser.close()
+        except IOError as msg:
+            print(file, ":", msg)
+            sys.exit(1)
+
+    n = len(list(functions.keys()))
+    print("Found %d functions in libxml2-api.xml" % (n))
+
+    py_types['pythonObject'] = ('O', "pythonObject", "pythonObject", "pythonObject")
+    try:
+        f = open(os.path.join(srcPref,"libxml2-python-api.xml"))
+        data = f.read()
+        (parser, target)  = getparser()
+        parser.feed(data)
+        parser.close()
+    except IOError as msg:
+        print(file, ":", msg)
+
+
+    print("Found %d functions in libxml2-python-api.xml" % (
+          len(list(functions.keys())) - n))
+    nb_wrap = 0
+    failed = 0
+    skipped = 0
+
+    include = open("libxml2-py.h", "w")
+    include.write("/* Generated */\n\n")
+    export = open("libxml2-export.c", "w")
+    export.write("/* Generated */\n\n")
+    wrapper = open("libxml2-py.c", "w")
+    wrapper.write("/* Generated */\n\n")
+    wrapper.write("#include <Python.h>\n")
+    wrapper.write("#include <libxml/xmlversion.h>\n")
+    wrapper.write("#include <libxml/tree.h>\n")
+    wrapper.write("#include <libxml/xmlschemastypes.h>\n")
+    wrapper.write("#include \"libxml_wrap.h\"\n")
+    wrapper.write("#include \"libxml2-py.h\"\n\n")
+    for function in sorted(functions.keys()):
+        ret = print_function_wrapper(function, wrapper, export, include)
+        if ret < 0:
+            failed = failed + 1
+            del functions[function]
+        if ret == 0:
+            skipped = skipped + 1
+            del functions[function]
+        if ret == 1:
+            nb_wrap = nb_wrap + 1
+    include.close()
+    export.close()
+    wrapper.close()
+
+    print("Generated %d wrapper functions, %d failed, %d skipped\n" % (nb_wrap,
+                                                              failed, skipped))
+    print("Missing type converters: ")
+    for type in list(unknown_types.keys()):
+        print("%s:%d " % (type, len(unknown_types[type])))
+    print()
+
+#######################################################################
+#
+#  This part writes part of the Python front-end classes based on
+#  mapping rules between types and classes and also based on function
+#  renaming to get consistent function names at the Python level
+#
+#######################################################################
+
+#
+# The type automatically remapped to generated classes
+#
+classes_type = {
+    "xmlNodePtr": ("._o", "xmlNode(_obj=%s)", "xmlNode"),
+    "xmlNode *": ("._o", "xmlNode(_obj=%s)", "xmlNode"),
+    "xmlDocPtr": ("._o", "xmlDoc(_obj=%s)", "xmlDoc"),
+    "xmlDoc *": ("._o", "xmlDoc(_obj=%s)", "xmlDoc"),
+    "htmlDocPtr": ("._o", "xmlDoc(_obj=%s)", "xmlDoc"),
+    "htmlxmlDocPtr *": ("._o", "xmlDoc(_obj=%s)", "xmlDoc"),
+    "xmlAttrPtr": ("._o", "xmlAttr(_obj=%s)", "xmlAttr"),
+    "xmlAttr *": ("._o", "xmlAttr(_obj=%s)", "xmlAttr"),
+    "xmlNsPtr": ("._o", "xmlNs(_obj=%s)", "xmlNs"),
+    "xmlNs *": ("._o", "xmlNs(_obj=%s)", "xmlNs"),
+    "xmlDtdPtr": ("._o", "xmlDtd(_obj=%s)", "xmlDtd"),
+    "xmlDtd *": ("._o", "xmlDtd(_obj=%s)", "xmlDtd"),
+    "xmlEntityPtr": ("._o", "xmlEntity(_obj=%s)", "xmlEntity"),
+    "xmlEntity *": ("._o", "xmlEntity(_obj=%s)", "xmlEntity"),
+    "xmlElementPtr": ("._o", "xmlElement(_obj=%s)", "xmlElement"),
+    "xmlElement *": ("._o", "xmlElement(_obj=%s)", "xmlElement"),
+    "xmlAttributePtr": ("._o", "xmlAttribute(_obj=%s)", "xmlAttribute"),
+    "xmlAttribute *": ("._o", "xmlAttribute(_obj=%s)", "xmlAttribute"),
+    "xmlXPathContextPtr": ("._o", "xpathContext(_obj=%s)", "xpathContext"),
+    "xmlXPathContext *": ("._o", "xpathContext(_obj=%s)", "xpathContext"),
+    "xmlXPathParserContext *": ("._o", "xpathParserContext(_obj=%s)", "xpathParserContext"),
+    "xmlXPathParserContextPtr": ("._o", "xpathParserContext(_obj=%s)", "xpathParserContext"),
+    "xmlParserCtxtPtr": ("._o", "parserCtxt(_obj=%s)", "parserCtxt"),
+    "xmlParserCtxt *": ("._o", "parserCtxt(_obj=%s)", "parserCtxt"),
+    "htmlParserCtxtPtr": ("._o", "parserCtxt(_obj=%s)", "parserCtxt"),
+    "htmlParserCtxt *": ("._o", "parserCtxt(_obj=%s)", "parserCtxt"),
+    "xmlValidCtxtPtr": ("._o", "ValidCtxt(_obj=%s)", "ValidCtxt"),
+    "xmlCatalogPtr": ("._o", "catalog(_obj=%s)", "catalog"),
+    "xmlURIPtr": ("._o", "URI(_obj=%s)", "URI"),
+    "xmlErrorPtr": ("._o", "Error(_obj=%s)", "Error"),
+    "xmlOutputBufferPtr": ("._o", "outputBuffer(_obj=%s)", "outputBuffer"),
+    "xmlParserInputBufferPtr": ("._o", "inputBuffer(_obj=%s)", "inputBuffer"),
+    "xmlRegexpPtr": ("._o", "xmlReg(_obj=%s)", "xmlReg"),
+    "xmlTextReaderLocatorPtr": ("._o", "xmlTextReaderLocator(_obj=%s)", "xmlTextReaderLocator"),
+    "xmlTextReaderPtr": ("._o", "xmlTextReader(_obj=%s)", "xmlTextReader"),
+    'xmlRelaxNGPtr': ('._o', "relaxNgSchema(_obj=%s)", "relaxNgSchema"),
+    'xmlRelaxNGParserCtxtPtr': ('._o', "relaxNgParserCtxt(_obj=%s)", "relaxNgParserCtxt"),
+    'xmlRelaxNGValidCtxtPtr': ('._o', "relaxNgValidCtxt(_obj=%s)", "relaxNgValidCtxt"),
+    'xmlSchemaPtr': ("._o", "Schema(_obj=%s)", "Schema"),
+    'xmlSchemaParserCtxtPtr': ("._o", "SchemaParserCtxt(_obj=%s)", "SchemaParserCtxt"),
+    'xmlSchemaValidCtxtPtr': ("._o", "SchemaValidCtxt(_obj=%s)", "SchemaValidCtxt"),
+}
+
+converter_type = {
+    "xmlXPathObjectPtr": "xpathObjectRet(%s)",
+}
+
+primary_classes = ["xmlNode", "xmlDoc"]
+
+classes_ancestor = {
+    "xmlNode" : "xmlCore",
+    "xmlDtd" : "xmlNode",
+    "xmlDoc" : "xmlNode",
+    "xmlAttr" : "xmlNode",
+    "xmlNs" : "xmlNode",
+    "xmlEntity" : "xmlNode",
+    "xmlElement" : "xmlNode",
+    "xmlAttribute" : "xmlNode",
+    "outputBuffer": "ioWriteWrapper",
+    "inputBuffer": "ioReadWrapper",
+    "parserCtxt": "parserCtxtCore",
+    "xmlTextReader": "xmlTextReaderCore",
+    "ValidCtxt": "ValidCtxtCore",
+    "SchemaValidCtxt": "SchemaValidCtxtCore",
+    "relaxNgValidCtxt": "relaxNgValidCtxtCore",
+}
+classes_destructors = {
+    "parserCtxt": "xmlFreeParserCtxt",
+    "catalog": "xmlFreeCatalog",
+    "URI": "xmlFreeURI",
+#    "outputBuffer": "xmlOutputBufferClose",
+    "inputBuffer": "xmlFreeParserInputBuffer",
+    "xmlReg": "xmlRegFreeRegexp",
+    "xmlTextReader": "xmlFreeTextReader",
+    "relaxNgSchema": "xmlRelaxNGFree",
+    "relaxNgParserCtxt": "xmlRelaxNGFreeParserCtxt",
+    "relaxNgValidCtxt": "xmlRelaxNGFreeValidCtxt",
+        "Schema": "xmlSchemaFree",
+        "SchemaParserCtxt": "xmlSchemaFreeParserCtxt",
+        "SchemaValidCtxt": "xmlSchemaFreeValidCtxt",
+        "ValidCtxt": "xmlFreeValidCtxt",
+}
+
+functions_noexcept = {
+    "xmlHasProp": 1,
+    "xmlHasNsProp": 1,
+    "xmlDocSetRootElement": 1,
+    "xmlNodeGetNs": 1,
+    "xmlNodeGetNsDefs": 1,
+    "xmlNextElementSibling": 1,
+    "xmlPreviousElementSibling": 1,
+    "xmlFirstElementChild": 1,
+    "xmlLastElementChild": 1,
+}
+
+reference_keepers = {
+    "xmlTextReader": [('inputBuffer', 'input')],
+    "relaxNgValidCtxt": [('relaxNgSchema', 'schema')],
+        "SchemaValidCtxt": [('Schema', 'schema')],
+}
+
+function_classes = {}
+
+function_classes["None"] = []
+
+def nameFixup(name, classe, type, file):
+    listname = classe + "List"
+    ll = len(listname)
+    l = len(classe)
+    if name[0:l] == listname:
+        func = name[l:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:12] == "xmlParserGet" and file == "python_accessor":
+        func = name[12:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:12] == "xmlParserSet" and file == "python_accessor":
+        func = name[12:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:10] == "xmlNodeGet" and file == "python_accessor":
+        func = name[10:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:9] == "xmlURIGet" and file == "python_accessor":
+        func = name[9:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:9] == "xmlURISet" and file == "python_accessor":
+        func = name[6:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:11] == "xmlErrorGet" and file == "python_accessor":
+        func = name[11:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:17] == "xmlXPathParserGet" and file == "python_accessor":
+        func = name[17:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:11] == "xmlXPathGet" and file == "python_accessor":
+        func = name[11:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:11] == "xmlXPathSet" and file == "python_accessor":
+        func = name[8:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:15] == "xmlOutputBuffer" and file != "python":
+        func = name[15:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:20] == "xmlParserInputBuffer" and file != "python":
+        func = name[20:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:9] == "xmlRegexp" and file == "xmlregexp":
+        func = "regexp" + name[9:]
+    elif name[0:6] == "xmlReg" and file == "xmlregexp":
+        func = "regexp" + name[6:]
+    elif name[0:20] == "xmlTextReaderLocator" and file == "xmlreader":
+        func = name[20:]
+    elif name[0:18] == "xmlTextReaderConst" and file == "xmlreader":
+        func = name[18:]
+    elif name[0:13] == "xmlTextReader" and file == "xmlreader":
+        func = name[13:]
+    elif name[0:12] == "xmlReaderNew" and file == "xmlreader":
+        func = name[9:]
+    elif name[0:11] == "xmlACatalog":
+        func = name[11:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:l] == classe:
+        func = name[l:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:7] == "libxml_":
+        func = name[7:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:6] == "xmlGet":
+        func = name[6:]
+        func = func[0:1].lower() + func[1:]
+    elif name[0:3] == "xml":
+        func = name[3:]
+        func = func[0:1].lower() + func[1:]
+    else:
+        func = name
+    if func[0:5] == "xPath":
+        func = "xpath" + func[5:]
+    elif func[0:4] == "xPtr":
+        func = "xpointer" + func[4:]
+    elif func[0:8] == "xInclude":
+        func = "xinclude" + func[8:]
+    elif func[0:2] == "iD":
+        func = "ID" + func[2:]
+    elif func[0:3] == "uRI":
+        func = "URI" + func[3:]
+    elif func[0:4] == "uTF8":
+        func = "UTF8" + func[4:]
+    elif func[0:3] == 'sAX':
+        func = "SAX" + func[3:]
+    return func
+
+
+def functionCompare(info1, info2):
+    (index1, func1, name1, ret1, args1, file1) = info1
+    (index2, func2, name2, ret2, args2, file2) = info2
+    if file1 == file2:
+        if func1 < func2:
+            return -1
+        if func1 > func2:
+            return 1
+    if file1 == "python_accessor":
+        return -1
+    if file2 == "python_accessor":
+        return 1
+    if file1 < file2:
+        return -1
+    if file1 > file2:
+        return 1
+    return 0
+
+def cmp_to_key(mycmp):
+    'Convert a cmp= function into a key= function'
+    class K(object):
+        def __init__(self, obj, *args):
+            self.obj = obj
+        def __lt__(self, other):
+            return mycmp(self.obj, other.obj) < 0
+        def __gt__(self, other):
+            return mycmp(self.obj, other.obj) > 0
+        def __eq__(self, other):
+            return mycmp(self.obj, other.obj) == 0
+        def __le__(self, other):
+            return mycmp(self.obj, other.obj) <= 0
+        def __ge__(self, other):
+            return mycmp(self.obj, other.obj) >= 0
+        def __ne__(self, other):
+            return mycmp(self.obj, other.obj) != 0
+    return K
+def writeDoc(name, args, indent, output):
+     if functions[name][0] is None or functions[name][0] == "":
+         return
+     val = functions[name][0]
+     val = val.replace("NULL", "None")
+     output.write(indent)
+     output.write('"""')
+     while len(val) > 60:
+         if val[0] == " ":
+             val = val[1:]
+             continue
+         str = val[0:60]
+         i = str.rfind(" ")
+         if i < 0:
+             i = 60
+         str = val[0:i]
+         val = val[i:]
+         output.write(str)
+         output.write('\n  ')
+         output.write(indent)
+     output.write(val)
+     output.write(' """\n')
+
+def buildWrappers():
+    global ctypes
+    global py_types
+    global py_return_types
+    global unknown_types
+    global functions
+    global function_classes
+    global classes_type
+    global classes_list
+    global converter_type
+    global primary_classes
+    global converter_type
+    global classes_ancestor
+    global converter_type
+    global primary_classes
+    global classes_ancestor
+    global classes_destructors
+    global functions_noexcept
+
+    for type in classes_type.keys():
+        function_classes[classes_type[type][2]] = []
+
+    #
+    # Build the list of C types to look for ordered to start
+    # with primary classes
+    #
+    ctypes = []
+    classes_list = []
+    ctypes_processed = {}
+    classes_processed = {}
+    for classe in primary_classes:
+        classes_list.append(classe)
+        classes_processed[classe] = ()
+        for type in classes_type.keys():
+            tinfo = classes_type[type]
+            if tinfo[2] == classe:
+                ctypes.append(type)
+                ctypes_processed[type] = ()
+    for type in sorted(classes_type.keys()):
+        if type in ctypes_processed:
+            continue
+        tinfo = classes_type[type]
+        if tinfo[2] not in classes_processed:
+            classes_list.append(tinfo[2])
+            classes_processed[tinfo[2]] = ()
+
+        ctypes.append(type)
+        ctypes_processed[type] = ()
+
+    for name in functions.keys():
+        found = 0
+        (desc, ret, args, file, cond) = functions[name]
+        for type in ctypes:
+            classe = classes_type[type][2]
+
+            if name[0:3] == "xml" and len(args) >= 1 and args[0][1] == type:
+                found = 1
+                func = nameFixup(name, classe, type, file)
+                info = (0, func, name, ret, args, file)
+                function_classes[classe].append(info)
+            elif name[0:3] == "xml" and len(args) >= 2 and args[1][1] == type \
+                and file != "python_accessor":
+                found = 1
+                func = nameFixup(name, classe, type, file)
+                info = (1, func, name, ret, args, file)
+                function_classes[classe].append(info)
+            elif name[0:4] == "html" and len(args) >= 1 and args[0][1] == type:
+                found = 1
+                func = nameFixup(name, classe, type, file)
+                info = (0, func, name, ret, args, file)
+                function_classes[classe].append(info)
+            elif name[0:4] == "html" and len(args) >= 2 and args[1][1] == type \
+                and file != "python_accessor":
+                found = 1
+                func = nameFixup(name, classe, type, file)
+                info = (1, func, name, ret, args, file)
+                function_classes[classe].append(info)
+        if found == 1:
+            continue
+        if name[0:8] == "xmlXPath":
+            continue
+        if name[0:6] == "xmlStr":
+            continue
+        if name[0:10] == "xmlCharStr":
+            continue
+        func = nameFixup(name, "None", file, file)
+        info = (0, func, name, ret, args, file)
+        function_classes['None'].append(info)
+   
+    classes = open("libxml2class.py", "w")
+    txt = open("libxml2class.txt", "w")
+    txt.write("          Generated Classes for libxml2-python\n\n")
+
+    txt.write("#\n# Global functions of the module\n#\n\n")
+    if "None" in function_classes:
+        flist = function_classes["None"]
+        flist = sorted(flist, key=cmp_to_key(functionCompare))
+        oldfile = ""
+        for info in flist:
+            (index, func, name, ret, args, file) = info
+            if file != oldfile:
+                classes.write("#\n# Functions from module %s\n#\n\n" % file)
+                txt.write("\n# functions from module %s\n" % file)
+                oldfile = file
+            classes.write("def %s(" % func)
+            txt.write("%s()\n" % func)
+            n = 0
+            for arg in args:
+                if n != 0:
+                    classes.write(", ")
+                classes.write("%s" % arg[0])
+                n = n + 1
+            classes.write("):\n")
+            writeDoc(name, args, '    ', classes)
+
+            for arg in args:
+                if arg[1] in classes_type:
+                    classes.write("    if %s is None: %s__o = None\n" %
+                                  (arg[0], arg[0]))
+                    classes.write("    else: %s__o = %s%s\n" %
+                                  (arg[0], arg[0], classes_type[arg[1]][0]))
+                if arg[1] in py_types:
+                    (f, t, n, c) = py_types[arg[1]]
+                    if t == "File":
+                        classes.write("    if %s is not None: %s.flush()\n" % (
+                                      arg[0], arg[0]))
+
+            if ret[0] != "void":
+                classes.write("    ret = ")
+            else:
+                classes.write("    ")
+            classes.write("libxml2mod.%s(" % name)
+            n = 0
+            for arg in args:
+                if n != 0:
+                    classes.write(", ")
+                classes.write("%s" % arg[0])
+                if arg[1] in classes_type:
+                    classes.write("__o")
+                n = n + 1
+            classes.write(")\n")
+
+# This may be needed to reposition the I/O, but likely to cause more harm
+# than good. Those changes in Python3 really break the model.
+#           for arg in args:
+#               if arg[1] in py_types:
+#                   (f, t, n, c) = py_types[arg[1]]
+#                   if t == "File":
+#                       classes.write("    if %s is not None: %s.seek(0,0)\n"%(
+#                                     arg[0], arg[0]))
+
+            if ret[0] != "void":
+                if ret[0] in classes_type:
+                    #
+                    # Raise an exception
+                    #
+                    if name in functions_noexcept:
+                        classes.write("    if ret is None:return None\n")
+                    elif name.find("URI") >= 0:
+                        classes.write(
+                        "    if ret is None:raise uriError('%s() failed')\n"
+                                      % (name))
+                    elif name.find("XPath") >= 0:
+                        classes.write(
+                        "    if ret is None:raise xpathError('%s() failed')\n"
+                                      % (name))
+                    elif name.find("Parse") >= 0:
+                        classes.write(
+                        "    if ret is None:raise parserError('%s() failed')\n"
+                                      % (name))
+                    else:
+                        classes.write(
+                        "    if ret is None:raise treeError('%s() failed')\n"
+                                      % (name))
+                    classes.write("    return ")
+                    classes.write(classes_type[ret[0]][1] % ("ret"))
+                    classes.write("\n")
+                else:
+                    classes.write("    return ret\n")
+            classes.write("\n")
+
+    txt.write("\n\n#\n# Set of classes of the module\n#\n\n")
+    for classname in classes_list:
+        if classname == "None":
+            pass
+        else:
+            if classname in classes_ancestor:
+                txt.write("\n\nClass %s(%s)\n" % (classname,
+                          classes_ancestor[classname]))
+                classes.write("class %s(%s):\n" % (classname,
+                              classes_ancestor[classname]))
+                classes.write("    def __init__(self, _obj=None):\n")
+                if classes_ancestor[classname] == "xmlCore" or \
+                   classes_ancestor[classname] == "xmlNode":
+                    classes.write("        if checkWrapper(_obj) != 0:")
+                    classes.write("            raise TypeError")
+                    classes.write("('%s got a wrong wrapper object type')\n" % \
+                                classname)
+                if classname in reference_keepers:
+                    rlist = reference_keepers[classname]
+                    for ref in rlist:
+                        classes.write("        self.%s = None\n" % ref[1])
+                classes.write("        self._o = _obj\n")
+                classes.write("        %s.__init__(self, _obj=_obj)\n\n" % (
+                              classes_ancestor[classname]))
+                if classes_ancestor[classname] == "xmlCore" or \
+                   classes_ancestor[classname] == "xmlNode":
+                    classes.write("    def __repr__(self):\n")
+                    format = "<%s (%%s) object at 0x%%x>" % (classname)
+                    classes.write("        return \"%s\" %% (self.name, int(pos_id (self)))\n\n" % (
+                                  format))
+            else:
+                txt.write("Class %s()\n" % (classname))
+                classes.write("class %s:\n" % (classname))
+                classes.write("    def __init__(self, _obj=None):\n")
+                if classname in reference_keepers:
+                    list = reference_keepers[classname]
+                    for ref in list:
+                        classes.write("        self.%s = None\n" % ref[1])
+                classes.write("        if _obj != None:self._o = _obj;return\n")
+                classes.write("        self._o = None\n\n")
+            destruct=None
+            if classname in classes_destructors:
+                classes.write("    def __del__(self):\n")
+                classes.write("        if self._o != None:\n")
+                classes.write("            libxml2mod.%s(self._o)\n" %
+                              classes_destructors[classname])
+                classes.write("        self._o = None\n\n")
+                destruct=classes_destructors[classname]
+            flist = function_classes[classname]
+            flist = sorted(flist, key=cmp_to_key(functionCompare))
+            oldfile = ""
+            for info in flist:
+                (index, func, name, ret, args, file) = info
+                #
+                # Do not provide as method the destructors for the class
+                # to avoid double free
+                #
+                if name == destruct:
+                    continue
+                if file != oldfile:
+                    if file == "python_accessor":
+                        classes.write("    # accessors for %s\n" % (classname))
+                        txt.write("    # accessors\n")
+                    else:
+                        classes.write("    #\n")
+                        classes.write("    # %s functions from module %s\n" % (
+                                      classname, file))
+                        txt.write("\n    # functions from module %s\n" % file)
+                        classes.write("    #\n\n")
+                oldfile = file
+                classes.write("    def %s(self" % func)
+                txt.write("    %s()\n" % func)
+                n = 0
+                for arg in args:
+                    if n != index:
+                        classes.write(", %s" % arg[0])
+                    n = n + 1
+                classes.write("):\n")
+                writeDoc(name, args, '        ', classes)
+                n = 0
+                for arg in args:
+                    if arg[1] in classes_type:
+                        if n != index:
+                            classes.write("        if %s is None: %s__o = None\n" %
+                                          (arg[0], arg[0]))
+                            classes.write("        else: %s__o = %s%s\n" %
+                                          (arg[0], arg[0], classes_type[arg[1]][0]))
+                    n = n + 1
+                if ret[0] != "void":
+                    classes.write("        ret = ")
+                else:
+                    classes.write("        ")
+                classes.write("libxml2mod.%s(" % name)
+                n = 0
+                for arg in args:
+                    if n != 0:
+                        classes.write(", ")
+                    if n != index:
+                        classes.write("%s" % arg[0])
+                        if arg[1] in classes_type:
+                            classes.write("__o")
+                    else:
+                        classes.write("self")
+                        if arg[1] in classes_type:
+                            classes.write(classes_type[arg[1]][0])
+                    n = n + 1
+                classes.write(")\n")
+                if ret[0] != "void":
+                    if ret[0] in classes_type:
+                        #
+                        # Raise an exception
+                        #
+                        if name in functions_noexcept:
+                            classes.write(
+                                "        if ret is None:return None\n")
+                        elif name.find("URI") >= 0:
+                            classes.write(
+                    "        if ret is None:raise uriError('%s() failed')\n"
+                                          % (name))
+                        elif name.find("XPath") >= 0:
+                            classes.write(
+                    "        if ret is None:raise xpathError('%s() failed')\n"
+                                          % (name))
+                        elif name.find("Parse") >= 0:
+                            classes.write(
+                    "        if ret is None:raise parserError('%s() failed')\n"
+                                          % (name))
+                        else:
+                            classes.write(
+                    "        if ret is None:raise treeError('%s() failed')\n"
+                                          % (name))
+
+                        #
+                        # generate the returned class wrapper for the object
+                        #
+                        classes.write("        __tmp = ")
+                        classes.write(classes_type[ret[0]][1] % ("ret"))
+                        classes.write("\n")
+
+                        #
+                        # Sometime one need to keep references of the source
+                        # class in the returned class object.
+                        # See reference_keepers for the list
+                        #
+                        tclass = classes_type[ret[0]][2]
+                        if tclass in reference_keepers:
+                            list = reference_keepers[tclass]
+                            for pref in list:
+                                if pref[0] == classname:
+                                    classes.write("        __tmp.%s = self\n" %
+                                                  pref[1])
+                        #
+                        # return the class
+                        #
+                        classes.write("        return __tmp\n")
+                    elif ret[0] in converter_type:
+                        #
+                        # Raise an exception
+                        #
+                        if name in functions_noexcept:
+                            classes.write(
+                                "        if ret is None:return None")
+                        elif name.find("URI") >= 0:
+                            classes.write(
+                    "        if ret is None:raise uriError('%s() failed')\n"
+                                          % (name))
+                        elif name.find("XPath") >= 0:
+                            classes.write(
+                    "        if ret is None:raise xpathError('%s() failed')\n"
+                                          % (name))
+                        elif name.find("Parse") >= 0:
+                            classes.write(
+                    "        if ret is None:raise parserError('%s() failed')\n"
+                                          % (name))
+                        else:
+                            classes.write(
+                    "        if ret is None:raise treeError('%s() failed')\n"
+                                          % (name))
+                        classes.write("        return ")
+                        classes.write(converter_type[ret[0]] % ("ret"))
+                        classes.write("\n")
+                    else:
+                        classes.write("        return ret\n")
+                classes.write("\n")
+
+    #
+    # Generate enum constants
+    #
+    for type,enum in enums.items():
+        classes.write("# %s\n" % type)
+        items = enum.items()
+        items = sorted(items, key=(lambda i: int(i[1])))
+        for name,value in items:
+            classes.write("%s = %s\n" % (name,value))
+        classes.write("\n")
+
+    txt.close()
+    classes.close()
+
+buildStubs()
+buildWrappers()