#!/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"),
"xmlDocPtr *": ("._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()
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