Python et.ET类代码示例

    def propagate_notification(self, notify):
        #print "propagate_notification", notify
        if len(self._subscribers) <= 0:
            return
        if len(notify) <= 0:
            return

        root = ET.Element('e:propertyset')
        root.attrib['xmlns:e']='urn:schemas-upnp-org:event-1-0'

        if isinstance( notify, variable.StateVariable):
            notify = [notify,]

        evented_variables = 0
        for n in notify:
            e = ET.SubElement( root, 'e:property')
            if n.name == 'LastChange':
                text = self.build_last_change_event(instance=n.instance)
                if text is not None:
                    ET.SubElement( e, n.name).text = text
                    evented_variables += 1
            else:
                s = ET.SubElement( e, n.name).text = str(n.value)
                evented_variables += 1
                if n.dependant_variable != None:
                    dependants = n.dependant_variable.get_allowed_values()
                    if dependants != None and len(dependants) > 0:
                        s.attrib['channel']=dependants[0]

        if evented_variables == 0:
            return
        xml = ET.tostring( root, encoding='utf-8')
        #print "propagate_notification", xml
        for s in self._subscribers.values():
            event.send_notification(s, xml)

    def new_subscriber(self, subscriber):
        notify = []
        for vdict in self._variables.values():
            notify += [v for v in vdict.values() if v.send_events == True]

        self.info("new_subscriber", subscriber, notify)
        if len(notify) <= 0:
            return

        root = ET.Element('e:propertyset')
        root.attrib['xmlns:e']='urn:schemas-upnp-org:event-1-0'
        evented_variables = 0
        for n in notify:
            e = ET.SubElement( root, 'e:property')
            if n.name == 'LastChange':
                if subscriber['seq'] == 0:
                    text = self.build_last_change_event(n.instance, force=True)
                else:
                    text = self.build_last_change_event(n.instance)
                if text is not None:
                    ET.SubElement( e, n.name).text = text
                    evented_variables += 1
            else:
                ET.SubElement( e, n.name).text = str(n.value)
                evented_variables += 1

        if evented_variables > 0:
            xml = ET.tostring( root, encoding='utf-8')
            event.send_notification(subscriber, xml)
        self._subscribers[subscriber['sid']] = subscriber

 def __init__(self, file):
     self.file = file
     dict.__init__(self)
     try:
         xml = ET.parse(file)
     except SyntaxError, msg:
         raise SyntaxError, msg

 def toString(self):
     """ sigh - having that optional preamble here
         breaks some of the older ContentDirectoryClients
     """
     #preamble = """<?xml version="1.0" encoding="utf-8"?>"""
     #return preamble + ET.tostring(self,encoding='utf-8')
     return ET.tostring(self,encoding='utf-8')

 def fromElement(self, elt):
     Object.fromElement(self, elt)
     for child in elt.getchildren():
         if child.tag.endswith('refID'):
             self.refID = child.text
         elif child.tag.endswith('res'):
             res = Resource.fromString(ET.tostring(child))
             self.res.append(res)

 def __init__(self, file):
     self.file = file
     dict.__init__(self)
     try:
         xml = ET.parse(file)
     except (SyntaxError, IOError):
         raise
     except Exception, msg:
         raise SyntaxError(msg)

 def fromString(cls, aString):
     instance = cls()
     elt = utils.parse_xml(aString, 'utf-8')
     elt = elt.getroot()
     for node in elt.getchildren():
         upnp_class_name =  node.findtext('{%s}class' % 'urn:schemas-upnp-org:metadata-1-0/upnp/')
         upnp_class = instance.get_upnp_class(upnp_class_name.strip())
         new_node = upnp_class.fromString(ET.tostring(node))
         instance.addItem(new_node)
     return instance

    def render_NOTIFY(self, request):
        self.info("EventServer received notify from %s, code: %d" % (request.client, request.code))
        data = request.content.getvalue()
        self.debug("EventServer notify data (%i) %s", len(data), data)
        request.setResponseCode(200)

        command = {"method": request.method, "path": request.path}
        headers = request.received_headers
        louie.send("UPnP.Event.Server.message_received", None, command, headers, data)

        if request.code != 200:
            self.info("data: %s", data)
        else:
            headers = request.getAllHeaders()
            sid = headers["sid"]
            try:
                tree = utils.parse_xml(data).getroot()

                ns = "urn:schemas-upnp-org:event-1-0"
                event = Event(sid)
                for prop in tree.findall("{%s}property" % ns):
                    for var in prop.getchildren():
                        tag = var.tag
                        idx = tag.find("}") + 1
                        self.debug("EventServer Event %s %s", var, ET.tostring(var))
                        if var.text is not None:
                            event.update({tag[idx:]: var.text})
                        else:
                            # this is solwise DMP1120w not escaping LastChange
                            txt = ET.tostring(var)[12:-13]
                            self.debug("EventServer Event %s", txt)
                            event.update({tag[idx:]: txt})

                self.control_point.propagate(event)

            except (SyntaxError, AttributeError):
                self.warning("malformed event notification from %r", request.client)
                self.exception("data: %r", data)
                return ""
            except Exception:
                self.exception("data: %r", data)

        return ""

def element_to_didl(item):
    """ a helper method to create a DIDLElement out of one ET element
        or XML fragment string
    """
    if not isinstance(item,basestring):
        item = ET.tostring(item)
    didl = """<DIDL-Lite xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/"
                         xmlns:dc="http://purl.org/dc/elements/1.1/"
                         xmlns:dlna="urn:schemas-dlna-org:metadata-1-0"
                         xmlns:pv="http://www.pv.com/pvns/"
                         xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/">""" \
                         + item + \
                         """</DIDL-Lite>"""
    return didl

    def __init__(self, server, control):

        root = ET.Element('scpd')
        root.attrib['xmlns']='urn:schemas-upnp-org:service-1-0'
        e = ET.SubElement(root, 'specVersion')
        ET.SubElement( e, 'major').text = '1'
        ET.SubElement( e, 'minor').text = '0'

        e = ET.SubElement( root, 'actionList')
        for action in server._actions.values():
            s = ET.SubElement( e, 'action')
            ET.SubElement( s, 'name').text = action.get_name()
            al = ET.SubElement( s, 'argumentList')
            for argument in action.get_arguments_list():
                a = ET.SubElement( al, 'argument')
                ET.SubElement( a, 'name').text = argument.get_name()
                ET.SubElement( a, 'direction').text = argument.get_direction()
                ET.SubElement( a, 'relatedStateVariable').text = argument.get_state_variable()

        e = ET.SubElement( root, 'serviceStateTable')
        for var in server._variables[0].values():
            s = ET.SubElement( e, 'stateVariable')
            if var.send_events == True:
                s.attrib['sendEvents'] = 'yes'
            else:
                s.attrib['sendEvents'] = 'no'
            ET.SubElement( s, 'name').text = var.name
            ET.SubElement( s, 'dataType').text = var.data_type
            if(not var.has_vendor_values and len(var.allowed_values)):
            #if len(var.allowed_values):
                v = ET.SubElement( s, 'allowedValueList')
                for value in var.allowed_values:
                    ET.SubElement( v, 'allowedValue').text = value

            if( var.allowed_value_range != None and
                len(var.allowed_value_range) > 0):
                complete = True
                for name,value in var.allowed_value_range.items():
                    if value == None:
                        complete = False
                if complete == True:
                    avl = ET.SubElement( s, 'allowedValueRange')
                    for name,value in var.allowed_value_range.items():
                         if value != None:
                            ET.SubElement( avl, name).text = str(value)

        self.xml = """<?xml version="1.0" encoding="utf-8"?>""" + ET.tostring( root, encoding='utf-8')
        static.Data.__init__(self, self.xml, 'text/xml')

def build_soap_call(method, arguments, is_response=False, encoding=SOAP_ENCODING, envelope_attrib=None, typed=None):
    """ create a shell for a SOAP request or response element
        - set method to none to omit the method element and add the arguments directly to the body (for an error msg)
        - arguments can be a dict or an ET.Element
    """
    envelope = ET.Element("s:Envelope")
    if envelope_attrib:
        for n in envelope_attrib:
            envelope.attrib.update({n[0]: n[1]})
    else:
        envelope.attrib.update({"s:encodingStyle": "http://schemas.xmlsoap.org/soap/encoding/"})
        envelope.attrib.update({"xmlns:s": "http://schemas.xmlsoap.org/soap/envelope/"})
    body = ET.SubElement(envelope, "s:Body")
    if method:
        # append the method call
        if is_response is True:
            method += "Response"
        re = ET.SubElement(body, method)
        if encoding:
            re.set(NS_SOAP_ENV + "encodingStyle", encoding)
    else:
        re = body
    # append the arguments
    if isinstance(arguments, (dict, OrderedDict)):
        type_map = {str: "xsd:string", unicode: "xsd:string", int: "xsd:int", float: "xsd:float", bool: "xsd:boolean"}
        for arg_name, arg_val in arguments.iteritems():
            arg_type = type_map[type(arg_val)]
            if arg_type == "xsd:string" and type(arg_val) == unicode:
                arg_val = arg_val.encode("utf-8")
            if arg_type == "xsd:int" or arg_type == "xsd:float":
                arg_val = str(arg_val)
            if arg_type == "xsd:boolean":
                if arg_val == True:
                    arg_val = "1"
                else:
                    arg_val = "0"
            e = ET.SubElement(re, arg_name)
            if typed and arg_type:
                if not isinstance(type, ET.QName):
                    arg_type = ET.QName("http://www.w3.org/1999/XMLSchema", arg_type)
                e.set(NS_XSI + "type", arg_type)
            e.text = arg_val
    else:
        if arguments == None:
            arguments = {}
        re.append(arguments)
    preamble = """<?xml version="1.0" encoding="utf-8"?>"""
    return preamble + ET.tostring(envelope, "utf-8")

    def fromElement(self, elt):
        """
        TODO:
         * creator
         * writeStatus
        """
        self.elementName = elt.tag
        self.id = elt.attrib.get('id',None)
        self.parentID = elt.attrib.get('parentID',None)

        self.refID = elt.attrib.get('refID',None)

        if elt.attrib.get('restricted',None) in [1,'true','True','1','yes','Yes']:
            self.restricted = True
        else:
            self.restricted = False

        for child in elt.getchildren():
            if child.tag.endswith('title'):
                self.title = child.text
            elif child.tag.endswith('albumArtURI'):
                self.albumArtURI = child.text
            elif child.tag.endswith('originalTrackNumber'):
                self.originalTrackNumber = int(child.text)
            elif child.tag.endswith('description'):
                self.description = child.text
            elif child.tag.endswith('longDescription'):
                self.longDescription = child.text
            elif child.tag.endswith('artist'):
                self.artist = child.text
            elif child.tag.endswith('genre'):
                if self.genre != None:
                    if self.genres == None:
                        self.genres = [self.genre,]
                    self.genres.append(child.text)
                self.genre = child.text

            elif child.tag.endswith('album'):
                self.album = child.text
            elif child.tag.endswith('class'):
                self.upnp_class = child.text
            elif child.tag.endswith('server_uuid'):
                self.server_uuid = child.text
            elif child.tag.endswith('res'):
                res = Resource.fromString(ET.tostring(child))
                self.res.append(res)

    def fromElement(self, elt):
        """
        TODO:
         * creator
         * writeStatus
        """
        self.elementName = elt.tag
        self.id = elt.attrib.get("id", None)
        self.parentID = elt.attrib.get("parentID", None)

        self.refID = elt.attrib.get("refID", None)

        if elt.attrib.get("restricted", None) in [1, "true", "True", "1", "yes", "Yes"]:
            self.restricted = True
        else:
            self.restricted = False

        for child in elt.getchildren():
            if child.tag.endswith("title"):
                self.title = child.text
            elif child.tag.endswith("albumArtURI"):
                self.albumArtURI = child.text
            elif child.tag.endswith("originalTrackNumber"):
                self.originalTrackNumber = int(child.text)
            elif child.tag.endswith("description"):
                self.description = child.text
            elif child.tag.endswith("longDescription"):
                self.longDescription = child.text
            elif child.tag.endswith("artist"):
                self.artist = child.text
            elif child.tag.endswith("album"):
                self.album = child.text
            elif child.tag.endswith("class"):
                self.upnp_class = child.text
            elif child.tag.endswith("server_uuid"):
                self.server_uuid = child.text
            elif child.tag.endswith("res"):
                res = Resource.fromString(ET.tostring(child))
                self.res.append(res)

	def upnp_X_GetFeatureList(self,**kwargs):
		Log.w()
		attrib = {
				"xmlns" : "urn:schemas-upnp-org:av:avs",
				"xmlns:xsi" : "http://www.w3.org/2001/XMLSchema-instance",
				"xsi:schemaLocation" : "urn:schemas-upnp-org:av:avs http://www.upnp.org/schemas/av/avs.xsd"
			}
		features = ET.Element("Features")
		features.attrib.update(attrib)

		attrib = {
				"name" : "samsung.com_BASICVIEW",
				"version" : "1"
			}
		feature = ET.SubElement(features, "Feature")
		feature.attrib.update(attrib)
		#audio/video container id definition
		tag = ET.SubElement(feature, "container")
		tag.attrib.update({ "type": DIDLLite.AudioItem.upnp_class, "id" : str(self._audio.get_id()) })
		tag = ET.SubElement(feature, "container")
		tag.attrib.update({ "type": DIDLLite.VideoItem.upnp_class, "id" : str(self._video.get_id()) })
		return {"FeatureList" : ET.tostring(features, "utf-8")}

    def button_action(self, widget, event):
        x = int(event.x)
        y = int(event.y)
        path = self.treeview.get_path_at_pos(x, y)
        if path == None:
            return True
        row_path,column,_,_ = path
        if event.button == 3:
            clipboard = Gtk.clipboard_get(Gdk.SELECTION_CLIPBOARD)
            iter = self.store.get_iter(row_path)
            menu = Gtk.Menu()
            item = Gtk.MenuItem("copy value")
            value,= self.store.get(iter,4)
            item.connect("activate", lambda w: clipboard.set_text(value))
            menu.append(item)

            item = Gtk.MenuItem("copy raw event")
            raw,= self.store.get(iter,5)
            try:
                from coherence.extern.et import ET, indent, parse_xml
                xml = parse_xml(raw)
                xml = xml.getroot()
                indent(xml,0)
                raw = ET.tostring(xml, encoding='utf-8')
            except:
                import traceback
                print traceback.format_exc()

            item.connect("activate", lambda w: clipboard.set_text(raw))
            menu.append(item)


            menu.show_all()
            menu.popup(None,None,None,event.button,event.time)
            return True

        return False