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392 lines (336 loc) · 13.3 KB
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# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License
# Version 1.1 (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
# License for the specific language governing rights and limitations
# under the License.
#
# The Original Code is Komodo code.
#
# The Initial Developer of the Original Code is ActiveState Software Inc.
# Portions created by ActiveState Software Inc are Copyright (C) 2000-2007
# ActiveState Software Inc. All Rights Reserved.
#
# Contributor(s):
# ActiveState Software Inc
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
import os
from xml.dom import pulldom
import logging
import re
log = logging.getLogger("koRNG")
log.setLevel(logging.DEBUG)
from elementtree import XMLTreeBuilder
try:
import cElementTree as ElementTree # effbot's C module
except ImportError:
log.error(
"using element tree and not cElementTree, performace will suffer")
import elementtree.ElementTree as ElementTree # effbot's pure Python module
class NamespaceParser(XMLTreeBuilder.FancyTreeBuilder):
_qname = re.compile("{(.*?)}(.*)")
def start(self, element):
element.namespaces = self.namespaces[:]
qn = self._qname.match(element.tag)
element.ns = qn.group(1)
element.tagName = qn.group(2)
class rng_base_dataset:
def __init__(self):
self.name = None
self.elements = [] # root level elements
self.attributes = []
self.values = []
self.refs = []
def resolveRefs(self, dataset):
for ref in self.refs[:]:
if ref not in dataset.defs.keys():
if ref not in dataset.ref_unresolved:
dataset.ref_unresolved[ref] = []
dataset.ref_unresolved[ref].append(self)
continue
d = dataset.defs[ref]
del self.refs[self.refs.index(ref)]
if d.refs:
d.resolveRefs(dataset)
# grab what we care about from this definition
self.attributes += [a for a in d.attributes if a.name]
self.elements += [e for e in d.elements if e.name]
self.values += d.values
class rng_dataset(rng_base_dataset):
def __init__(self):
rng_base_dataset.__init__(self)
self.name = "root"
self.all_elements = {}
self.elements_caseless = {}
self.defs = {}
self.namespace = ""
self.datatypeLibrary = ""
self.xmlns = ""
self.ref_resolving = {}
self.ref_unresolved = {}
def resolveRefs(self, dataset=None):
if not dataset:
dataset = self
rng_base_dataset.resolveRefs(self, dataset)
for d in self.defs.values():
d.resolveRefs(dataset)
for e in self.all_elements.values():
e.resolveRefs(dataset)
for a in self.attributes[:]:
a.resolveRefs(dataset)
self.resolveUnresolvedRefs()
def resolveCircularRefs(self):
for ref in self.ref_circular.keys()[:]:
# print "resolving earlier circular reference %s"%ref
el = self.ref_circular[ref]
del self.ref_circular[ref]
for e in el:
e.resolveRefs(self)
def resolveUnresolvedRefs(self):
for ref in self.ref_unresolved.keys()[:]:
print "resolving earlier unresolved reference %s" % ref
el = self.ref_unresolved[ref]
del self.ref_unresolved[ref]
for e in el:
e.resolveRefs(self)
def element_info(self, element_name):
name = element_name.lower()
if name in self.elements_caseless:
return self.elements_caseless[name]
return None
def possible_children(self, element_name=None):
if not element_name:
return [el.name for el in self.elements]
else:
name = element_name.lower()
if name not in self.elements_caseless:
return []
return [el.name for el in self.elements_caseless[name].elements]
def possible_attributes(self, element_name):
name = element_name.lower()
if name in self.elements_caseless:
return [a.name for a in self.elements_caseless[name].attributes]
return []
def possible_attribute_values(self, element_name, attribute_name):
el = self.element_info(element_name)
if el:
for a in el.attributes:
if attribute_name == a.name:
return a.values
return []
def all_element_types(self):
return self.all_elements.keys()
def dump(self, stream):
print "RNG NS: %s" % self.xmlns
print "Namespace: %s" % self.namespace
print "datatypeLibrary: %s" % self.datatypeLibrary
print "-"*60
for e in self.elements:
e.dump(stream)
print "-"*60
for e in self.all_elements.values():
e.dump(stream)
print "-"*60
class rng_node_info(rng_base_dataset):
def __init__(self, node):
rng_base_dataset.__init__(self)
self.name = node.attrib.get("name")
self._node = node
class element_info(rng_node_info):
def dump(self, stream):
attrs = []
for n, v in self._node.attrib.items():
attrs.append('%s="%s"' % (n, v))
stream.write("<element %s>\n" % ' '.join(attrs))
names = [el.name for el in self.elements]
stream.write(" children %r\n" % names)
for attr in self.attributes:
attr.dump(stream)
stream.write(" refs remaining: %r\n" % self.refs)
class attribute_info(rng_node_info):
def dump(self, stream):
stream.write(" attr %s %r\n" % (self.name, self.values))
class definition(rng_node_info):
def dump(self, stream):
stream.write("definition %s has %d refs\n" % (
self.name, len(self.refs)))
names = [el.name for el in self.elements]
stream.write(" has %d elements %r\n" % (
len(self.elements), names))
names = [el.name for el in self.attributes]
stream.write(" has %d attributes %r\n" % (
len(self.attributes), names))
stream.write(" has %d values %r\n" % (
len(self.values), self.values))
def resolveRefs(self, dataset):
for e in self.elements[:]:
e.resolveRefs(dataset)
for a in self.attributes[:]:
a.resolveRefs(dataset)
rng_node_info.resolveRefs(self, dataset)
class rng:
def __init__(self, filename, dataset=None):
if dataset is None:
dataset = rng_dataset()
self.dataset = dataset
self._element_stack = [self.dataset]
self._includes = []
self.filename = filename
self.parse()
def parse(self):
self.tree = ElementTree.parse(self.filename, NamespaceParser())
self.root = self.tree.getroot()
if self.root.tagName != "grammar":
raise "Invalid RNG file [%s] root tag [%s]" % (
self.filename, self.root.tagName)
self.parent_map = dict((
c, p) for p in self.tree.getiterator() for c in p)
self.parseNode(self.root)
self.dataset.resolveRefs()
def parseNode(self, node):
methodName = "handle_%s" % node.tagName
# print methodName
if hasattr(self, methodName):
fn = getattr(self, methodName)
fn(node)
for child in list(node):
# print "parsing child %s"%child.tagName
self.parseNode(child)
methodName = "handle_%s_end" % node.tagName
# print methodName
if hasattr(self, methodName):
fn = getattr(self, methodName)
fn(node)
def handle_include(self, node):
# XXX handle relative dirs
path = node.attrib.get("href")
if not os.path.exists(path):
path = os.path.join(os.path.dirname(self.filename), path)
# print "file included [%s]"%path
rng(path, self.dataset)
def handle_grammar(self, node):
if not self.dataset.namespace:
self.dataset.xmlns = node.attrib.get('xmlns')
self.dataset.namespace = node.attrib.get('ns')
self.dataset.datatypeLibrary = node.attrib.get('datatypeLibrary')
# def handle_start(self, node):
# self._element_stack.append(self)
# def handle_start_end(self, node):
# self._element_stack.pop()
def handle_attribute(self, node):
self._element_stack.append(attribute_info(node))
def handle_attribute_end(self, node):
# attributes get added to the last item in the element stack
attr = self._element_stack.pop()
el = self._element_stack[-1]
el.attributes.append(attr)
def handle_name_end(self, node):
# is the parent node an attribute?
parent = self.parent_map[node]
if node.text and parent.tagName == "attribute":
# print "name value...%r"%node.text
e = self._element_stack[-1]
e.name = node.text
self.dataset.all_elements[node.text] = e
self.dataset.elements_caseless[node.text.lower()] = e
def handle_element(self, node):
# print "handle_element %s" %node.attrib.get("name")
e = element_info(node)
if e.name:
self.dataset.all_elements[e.name] = e
self.dataset.elements_caseless[e.name.lower()] = e
self._element_stack.append(e)
def handle_element_end(self, node):
# print "handle_element_end %s" %node.attrib.get("name")
el = self._element_stack.pop()
self._element_stack[-1].elements.append(el)
def handle_define(self, node):
d = definition(node)
# print "definition: %s" % d.name
self.dataset.defs[d.name] = d
self._element_stack.append(d)
def handle_define_end(self, node):
d = self._element_stack.pop()
def handle_ref(self, node):
self._element_stack[-1].refs.append(node.attrib.get("name"))
def handle_value(self, node):
self._element_stack[-1].values.append(node.text)
# def handle_zeroOrMore(self, node):
# pass
# def handle_choice(self, node):
# pass
# def handle_interleave(self, node):
# pass
# def handle_mixed(self, node):
# pass
# def handle_empty(self, node):
# pass
# def handle_notAllowed(self, node):
# pass
# def handle_group(self, node):
# pass
# def handle_optional(self, node):
# pass
# def handle_text(self, node):
# pass
# def handle_div(self, node):
# pass
# def handle_list(self, node):
# pass
# def handle_data(self, node):
# pass
# def handle_except(self, node):
# pass
# def handle_oneOrMore(self, node):
# pass
# def handle_param(self, node):
# pass
if __name__ == "__main__":
import sys
if len(sys.argv) > 1:
filename = sys.argv[1]
machine = rng(filename)
else:
import os
import sys
# we're in src/python-sitelib, we need the contrib dir
basedir = os.path.dirname(os.path.dirname(os.getcwd()))
filename = os.path.join(
basedir, "contrib", "catalogs", "rng", "xslt.rng")
machine = rng(filename)
# assert "template" in machine.possible_children("stylesheet")
# assert "text" in machine.all_element_types()
# assert machine.possible_children("text")==[]
# assert machine.possible_children("garbage")==[]
# assert "version" in machine.possible_attributes("transform")
# assert machine.possible_attributes("garbage")==[]
# assert "upper-first" in machine.possible_attribute_values("sort", "case-order")
# assert machine.possible_attribute_values("garbage", "garbage") == []
# assert machine.possible_attribute_values("garbate", "case-order") == []
## filename = "..\\languages\\xhtml\\xhtml-state-machine.xml"
## machine = state_machine_info(filename)
## for element in machine.all_element_types():
## if element!="#LITERAL":
# assert "lang" in machine.possible_attributes(element), "no
# lang on %s" % element
machine.dataset.dump(sys.stdout)
# machine.dataset.element_info("tr").dump(sys.stdout)