view orpg/pulldom.py @ 89:b84e0799fed2 alpha

Traipse Alpha 'OpenRPG' {090917-03} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc''s main goal is to offer more advanced features and enhance the productivity of the user. Update Summary: 00: Adds menu changes to draw attention to important updates, errors, or other events. (image info coming soon) Traipse URL is not included in the repos tab and is set as default. 01: Fixes Copy for Windows and Linux (finally!!) users. Fixes incomplete update to Grid and List nodes. Fixes incomplete update to Chat Commands. 02: Fixes problems with Remote Image Upload. Fixes Drop and Drag of Minis to Map. CherryPy can now use any image in the webfiles/ folder and sub-folders. CherryPy can now Drop and Drag Minis to the Map. 03: Minor changes to Update Manager's GUI. Expert recommendation warning added to Revision Update. Step down compatibility with open_rpg & component added to orpgCore.
author sirebral
date Thu, 17 Sep 2009 06:29:32 -0500
parents 551cd440acce
children
line wrap: on
line source

import minidom
import xml.sax,xml.sax.handler
import types

try: from cStringIO import StringIO
except ImportError: from StringIO import StringIO

try: _StringTypes = [types.StringType, types.UnicodeType]
except AttributeError: _StringTypes = [types.StringType]

START_ELEMENT = "START_ELEMENT"
END_ELEMENT = "END_ELEMENT"
COMMENT = "COMMENT"
START_DOCUMENT = "START_DOCUMENT"
END_DOCUMENT = "END_DOCUMENT"
PROCESSING_INSTRUCTION = "PROCESSING_INSTRUCTION"
IGNORABLE_WHITESPACE = "IGNORABLE_WHITESPACE"
CHARACTERS = "CHARACTERS"

class PullDOM(xml.sax.ContentHandler):
    def __init__(self):
        self.firstEvent = [None, None]
        self.lastEvent = self.firstEvent
        self._ns_contexts = [{}] # contains uri -> prefix dicts
        self._current_context = self._ns_contexts[-1]

    def setDocumentLocator(self, locator): pass

    def startPrefixMapping(self, prefix, uri):
        self._ns_contexts.append(self._current_context.copy())
        self._current_context[uri] = prefix

    def endPrefixMapping(self, prefix):
        del self._ns_contexts[-1]

    def startElementNS(self, name, tagName , attrs):
        uri,localname = name
        if uri:
            # When using namespaces, the reader may or may not
            # provide us with the original name. If not, create
            # *a* valid tagName from the current context.
            if tagName is None: tagName = self._current_context[uri] + ":" + localname
            node = self.document.createElementNS(uri, tagName)
        else:
            # When the tagname is not prefixed, it just appears as
            # localname
            node = self.document.createElement(localname)
        for aname,value in attrs.items():
            a_uri, a_localname = aname
            if a_uri:
                qname = self._current_context[a_uri] + ":" + a_localname
                attr = self.document.createAttributeNS(a_uri, qname)
            else: attr = self.document.createAttribute(a_localname)
            attr.value = value
            node.setAttributeNode(attr)
        parent = self.curNode
        node.parentNode = parent
        self.curNode = node
        self.lastEvent[1] = [(START_ELEMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((START_ELEMENT, node))

    def endElementNS(self, name, tagName):
        node = self.curNode
        self.lastEvent[1] = [(END_ELEMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((END_ELEMENT, node))
        self.curNode = node.parentNode

    def startElement(self, name, attrs):
        node = self.document.createElement(name)
        for aname,value in attrs.items():
            attr = self.document.createAttribute(aname)
            attr.value = value
            node.setAttributeNode(attr)
        parent = self.curNode
        node.parentNode = parent
        self.curNode = node
        self.lastEvent[1] = [(START_ELEMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((START_ELEMENT, node))

    def endElement(self, name):
        node = self.curNode
        self.lastEvent[1] = [(END_ELEMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((END_ELEMENT, node))
        self.curNode = node.parentNode

    def comment(self, s):
        node = self.document.createComment(s)
        parent = self.curNode
        node.parentNode = parent
        self.lastEvent[1] = [(COMMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((COMMENT, node))

    def processingInstruction(self, target, data):
        node = self.document.createProcessingInstruction(target, data)
        parent = self.curNode
        node.parentNode = parent
        self.lastEvent[1] = [(PROCESSING_INSTRUCTION, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((PROCESSING_INSTRUCTION, node))

    def ignorableWhitespace(self, chars):
        node = self.document.createTextNode(chars[start:start + length])
        parent = self.curNode
        node.parentNode = parent
        self.lastEvent[1] = [(IGNORABLE_WHITESPACE, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((IGNORABLE_WHITESPACE, node))

    def characters(self, chars):
        node = self.document.createTextNode(chars)
        parent = self.curNode
        node.parentNode = parent
        self.lastEvent[1] = [(CHARACTERS, node), None]
        self.lastEvent = self.lastEvent[1]

    def startDocument(self):
        node = self.curNode = self.document = minidom.Document()
        node.parentNode = None
        self.lastEvent[1] = [(START_DOCUMENT, node), None]
        self.lastEvent = self.lastEvent[1]
        #self.events.append((START_DOCUMENT, node))

    def endDocument(self):
        assert not self.curNode.parentNode
        for node in self.curNode.childNodes:
            if node.nodeType == node.ELEMENT_NODE: self.document.documentElement = node
        #if not self.document.documentElement:
        #    raise Error, "No document element"
        self.lastEvent[1] = [(END_DOCUMENT, node), None]
        #self.events.append((END_DOCUMENT, self.curNode))

class ErrorHandler:
    def warning(self, exception):
        print exception
    def error(self, exception):
        raise exception
    def fatalError(self, exception):
        raise exception

class DOMEventStream:
    def __init__(self, stream, parser, bufsize):
        self.stream = stream
        self.parser = parser
        self.bufsize = bufsize
        self.reset()

    def reset(self):
        self.pulldom = PullDOM()
        # This content handler relies on namespace support
        self.parser.setFeature(xml.sax.handler.feature_namespaces,1)
        self.parser.setContentHandler(self.pulldom)

    def __getitem__(self, pos):
        rc = self.getEvent()
        if rc: return rc
        raise IndexError

    def expandNode(self, node):
        event = self.getEvent()
        while event:
            token, cur_node = event
            if cur_node is node: return
            if token != END_ELEMENT: cur_node.parentNode.appendChild(cur_node)
            event = self.getEvent()

    def getEvent(self):
        if not self.pulldom.firstEvent[1]: self.pulldom.lastEvent = self.pulldom.firstEvent
        while not self.pulldom.firstEvent[1]:
            buf=self.stream.read(self.bufsize)
            if not buf:
                #FIXME: why doesn't Expat close work?
                #self.parser.close()
                return None
            self.parser.feed(buf)
        rc = self.pulldom.firstEvent[1][0]
        self.pulldom.firstEvent[1] = self.pulldom.firstEvent[1][1]
        return rc

class SAX2DOM(PullDOM):

    def startElementNS(self, name, tagName , attrs):
        PullDOM.startElementNS(self, name, tagName, attrs)
        self.curNode.parentNode.appendChild(self.curNode)

    def startElement(self, name, attrs):
        PullDOM.startElement(self, name, attrs)
        self.curNode.parentNode.appendChild(self.curNode)

    def processingInstruction(self, target, data):
        PullDOM.processingInstruction(self, target, data)
        node = self.lastEvent[0][1]
        node.parentNode.appendChild(node)

    def ignorableWhitespace(self, chars):
        PullDOM.ignorableWhitespace(self, chars)
        node = self.lastEvent[0][1]
        node.parentNode.appendChild(node)

    def characters(self, chars):
        PullDOM.characters(self, chars)
        node = self.lastEvent[0][1]
        node.parentNode.appendChild(node)

default_bufsize = (2 ** 14) - 20

def parse(stream_or_string, parser=None, bufsize=default_bufsize):
    if type(stream_or_string) in _StringTypes: stream = open(stream_or_string)
    else: stream = stream_or_string
    if not parser: parser = xml.sax.make_parser()
    return DOMEventStream(stream, parser, bufsize)

def parseString(string, parser=None):
    bufsize = len(string)
    buf = StringIO(string)
    if not parser: parser = xml.sax.make_parser()
    return DOMEventStream(buf, parser, bufsize)