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Diffstat (limited to 'tutorius/bundler.py')
| -rw-r--r-- | tutorius/bundler.py | 700 |
1 files changed, 0 insertions, 700 deletions
diff --git a/tutorius/bundler.py b/tutorius/bundler.py deleted file mode 100644 index c9558b1..0000000 --- a/tutorius/bundler.py +++ /dev/null @@ -1,700 +0,0 @@ -# Copyright (C) 2009, Tutorius.org -# Copyright (C) 2009, Jean-Christophe Savard <savard.jean.christophe@gmail.com> -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - -""" -This module contains all the data handling class of Tutorius -""" - -import logging -import os -import uuid -import xml.dom.minidom -from xml.dom import NotFoundErr - -from sugar.tutorius import addon -from sugar.tutorius.core import Tutorial, State, FiniteStateMachine -from sugar.tutorius.filters import * -from sugar.tutorius.actions import * -from ConfigParser import SafeConfigParser - -# this is where user installed/generated tutorials will go -def _get_store_root(): - profile_name = os.getenv("SUGAR_PROFILE") or "default" - return os.path.join(os.getenv("HOME"), - ".sugar",profile_name,"tutorius","data") -# this is where activity bundled tutorials should be, under the activity bundle -def _get_bundle_root(base_path=None): - base_path = base_path or os.getenv("SUGAR_BUNDLE_PATH") - if base_path: - return os.path.join(os.getenv("SUGAR_BUNDLE_PATH"),"data","tutorius","data") - -INI_ACTIVITY_SECTION = "RELATED_ACTIVITIES" -INI_METADATA_SECTION = "GENERAL_METADATA" -INI_GUID_PROPERTY = "GUID" -INI_NAME_PROPERTY = "NAME" -INI_XML_FSM_PROPERTY = "FSM_FILENAME" -INI_FILENAME = "meta.ini" -TUTORIAL_FILENAME = "tutorial.xml" -NODE_COMPONENT = "Component" -NODE_SUBCOMPONENT = "property" -NODE_SUBCOMPONENTLIST = "listproperty" -NEXT_STATE_ATTR = "next_state" - -class TutorialStore(object): - - def list_available_tutorials(self, activity_name, activity_vers): - """ - Generate the list of all tutorials present on disk for a - given activity. - - @returns a map of tutorial {names : GUID}. - """ - # check both under the activity data and user installed folders - paths = [p for p in [_get_store_root(), _get_bundle_root()] if p ] - - tutoGuidName = {} - - for repository in paths: - # (our) convention dictates that tutorial folders are named - # with their GUID (for unicity) but this is not enforced. - try: - for tuto in os.listdir(repository): - parser = SafeConfigParser() - parser.read(os.path.join(repository, tuto, INI_FILENAME)) - guid = parser.get(INI_METADATA_SECTION, INI_GUID_PROPERTY) - name = parser.get(INI_METADATA_SECTION, INI_NAME_PROPERTY) - activities = parser.options(INI_ACTIVITY_SECTION) - # enforce matching activity name AND version, as UI changes - # break tutorials. We may lower this requirement when the - # UAM gets less dependent on the widget order. - # Also note property names are always stored lowercase. - if activity_name.lower() in activities: - version = parser.get(INI_ACTIVITY_SECTION, activity_name) - if activity_vers == version: - tutoGuidName[guid] = name - except OSError: - # the repository may not exist. Continue scanning - pass - - return tutoGuidName - - def load_tutorial(self, Guid, bundle_path=None): - """ - Rebuilds a tutorial object from it's serialized state. - Common storing paths will be scanned. - - @param Guid the generic identifier of the tutorial - @returns a Tutorial object containing an FSM - """ - bundler = TutorialBundler(Guid, bundle_path=bundle_path) - bundler_path = bundler.get_tutorial_path() - config = SafeConfigParser() - config.read(os.path.join(bundler_path, INI_FILENAME)) - - serializer = XMLSerializer() - - name = config.get(INI_METADATA_SECTION, INI_NAME_PROPERTY) - fsm = serializer.load_fsm(Guid, bundler.Path) - - tuto = Tutorial(name, fsm) - return tuto - - -class Serializer(object): - """ - Interface that provide serializing and deserializing of the FSM - used in the tutorials to/from disk. Must be inherited. - """ - - def save_fsm(self,fsm): - """ - Save fsm to disk. If a GUID parameter is provided, the existing GUID is - located in the .ini files in the store root and bundle root and - the corresponding FSM is/are overwritten. If the GUId is not found, an - exception occur. If no GUID is provided, FSM is written in a new file - in the store root. - """ - return NotImplementedError() - - def load_fsm(self): - """ - Load fsm from disk. - """ - return NotImplementedError() - -class XMLSerializer(Serializer): - """ - Class that provide serializing and deserializing of the FSM - used in the tutorials to/from a .xml file. Inherit from Serializer - """ - - def _create_state_dict_node(self, state_dict, doc): - """ - Create and return a xml Node from a State dictionnary. - """ - statesList = doc.createElement("States") - for state_name, state in state_dict.items(): - stateNode = doc.createElement("State") - statesList.appendChild(stateNode) - stateNode.setAttribute("Name", state_name) - actionsList = stateNode.appendChild(self._create_action_list_node(state.get_action_list(), doc)) - eventfiltersList = stateNode.appendChild(self._create_event_filters_node(state.get_event_filter_list(), doc)) - return statesList - - def _create_addon_component_node(self, parent_attr_name, comp, doc): - """ - Takes a component that is embedded in another component (e.g. the content - of a OnceWrapper) and encapsulate it in a node with the property name. - - e.g. - <Component Class="OnceWrapper"> - <property name="addon"> - <Component Class="BubbleMessage" message="'Hi!'" position="[12,32]"/> - </property> - </Component> - - When reloading this node, we should look up the property name for the parent - in the attribute of the node, then examine the subnode to create the addon - object itself. - - @param parent_attr_name The name of the parent's attribute for this addon - e.g. the OnceWrapper has the action attribute, which corresponds to a - sub-action it must execute once. - @param comp The component node itself - @param doc The XML document root (only used to create the nodes) - @returns A NODE_SUBCOMPONENT node, with the property attribute and a sub node - that represents another component. - """ - subCompNode = doc.createElement(NODE_SUBCOMPONENT) - subCompNode.setAttribute("name", parent_attr_name) - - subNode = self._create_component_node(comp, doc) - - subCompNode.appendChild(subNode) - - return subCompNode - - def _create_addonlist_component_node(self, parent_attr_name, comp_list, doc): - """ - Takes a list of components that are embedded in another component (ex. the - content of a ChainAction) and encapsulate them in a node with the property - name. - - e.g. - <Component Class="ChainAction"> - <listproperty name="actions"> - <Component Class="BubbleMessage" message="'Hi!'" position="[15,35]"/> - <Component Class="DialogMessage" message="'Multi-action!'" position="[45,10]"/> - </listproperty> - </Component> - - When reloading this node, we should look up the property name for the parent - in the the attribute of the node, then rebuild the list by appending the - content of all the subnodes. - - @param parent_attr_name The name of the parent component's property - @param comp_list A list of components that comprise the property - @param doc The XML document root (only for creating new nodes) - @returns A NODE_SUBCOMPONENTLIST node with the property attribute - """ - subCompListNode = doc.createElement(NODE_SUBCOMPONENTLIST) - subCompListNode.setAttribute("name", parent_attr_name) - - for comp in comp_list: - compNode = self._create_component_node(comp, doc) - subCompListNode.appendChild(compNode) - - return subCompListNode - - def _create_component_node(self, comp, doc): - """ - Takes a single component (action or eventfilter) and transforms it - into a xml node. - - @param comp A single component - @param doc The XML document root (used to create nodes only - @return A XML Node object with the component tag name - """ - compNode = doc.createElement(NODE_COMPONENT) - - # Write down just the name of the Action class as the Class - # property -- - compNode.setAttribute("Class",type(comp).__name__) - - # serialize all tutorius properties - for propname in comp.get_properties(): - propval = getattr(comp, propname) - if getattr(type(comp), propname).type == "addonlist": - compNode.appendChild(self._create_addonlist_component_node(propname, propval, doc)) - elif getattr(type(comp), propname).type == "addon": - #import rpdb2; rpdb2.start_embedded_debugger('pass') - compNode.appendChild(self._create_addon_component_node(propname, propval, doc)) - else: - # repr instead of str, as we want to be able to eval() it into a - # valid object. - compNode.setAttribute(propname, repr(propval)) - - return compNode - - def _create_action_list_node(self, action_list, doc): - """ - Create and return a xml Node from a Action list. - - @param action_list A list of actions - @param doc The XML document root (used to create new nodes only) - @return A XML Node object with the Actions tag name and a serie of - Action children - """ - actionsList = doc.createElement("Actions") - for action in action_list: - # Create the action node - actionNode = self._create_component_node(action, doc) - # Append it to the list - actionsList.appendChild(actionNode) - - return actionsList - - def _create_event_filters_node(self, event_filters, doc): - """ - Create and return a xml Node from a event filters. - """ - eventFiltersList = doc.createElement("EventFiltersList") - for event, state in event_filters: - eventFilterNode = self._create_component_node(event, doc) - eventFilterNode.setAttribute(NEXT_STATE_ATTR, str(state)) - eventFiltersList.appendChild(eventFilterNode) - - return eventFiltersList - - def save_fsm(self, fsm, xml_filename, path): - """ - Save fsm to disk, in the xml file specified by "xml_filename", in the - "path" folder. If the specified file doesn't exist, it will be created. - """ - self.doc = doc = xml.dom.minidom.Document() - fsm_element = doc.createElement("FSM") - doc.appendChild(fsm_element) - fsm_element.setAttribute("Name", fsm.name) - fsm_element.setAttribute("StartStateName", fsm.start_state_name) - statesDict = fsm_element.appendChild(self._create_state_dict_node(fsm._states, doc)) - - fsm_actions_node = self._create_action_list_node(fsm.actions, doc) - fsm_actions_node.tagName = "FSMActions" - actionsList = fsm_element.appendChild(fsm_actions_node) - - file_object = open(os.path.join(path, xml_filename), "w") - file_object.write(doc.toprettyxml()) - file_object.close() - - - def _find_tutorial_dir_with_guid(self, guid): - """ - Finds the tutorial with the associated GUID. If it is found, return - the path to the tutorial's directory. If it doesn't exist, raise an - IOError. - - A note : if there are two tutorials with this GUID in the folders, - they will both be inspected and the one with the highest version - number will be returned. If they have the same version number, the one - from the global store will be returned. - - @param guid The GUID of the tutorial that is to be loaded. - """ - # Attempt to find the tutorial's directory in the global directory - global_dir = os.path.join(_get_store_root(), guid) - # Then in the activty's bundle path - activity_dir = os.path.join(_get_bundle_root(), guid) - - # If they both exist - if os.path.isdir(global_dir) and os.path.isdir(activity_dir): - # Inspect both metadata files - global_meta = os.path.join(global_dir, "meta.ini") - activity_meta = os.path.join(activity_dir, "meta.ini") - - # Open both config files - global_parser = SafeConfigParser() - global_parser.read(global_meta) - - activity_parser = SafeConfigParser() - activity_parser.read(activity_meta) - - # Get the version number for each tutorial - global_version = global_parser.get(INI_METADATA_SECTION, "version") - activity_version = activity_parser.get(INI_METADATA_SECTION, "version") - - # If the global version is higher or equal, we'll take it - if global_version >= activity_version: - return global_dir - else: - return activity_dir - - # Do we just have the global directory? - if os.path.isdir(global_dir): - return global_dir - - # Or just the activity's bundle directory? - if os.path.isdir(activity_dir): - return activity_dir - - # Error : none of these directories contain the tutorial - raise IOError(2, "Neither the global nor the bundle directory contained the tutorial with GUID %s"%guid) - - def _get_direct_descendants_by_tag_name(self, node, name): - """ - Searches in the list of direct descendants of a node to find all the node - that have the given name. - - This is used because the Document.getElementsByTagName() function returns the - list of all the descendants (whatever their distance to the start node) that - have that name. In the case of complex components, we absolutely need to inspect - a single layer of the tree at the time. - - @param node The node from which we want the direct descendants with a particular - name - @param name The name of the node - @returns A list, possibly empty, of direct descendants of node that have this name - """ - return_list = [] - for childNode in node.childNodes: - if childNode.nodeName == name: - return_list.append(childNode) - return return_list - - def _load_xml_properties(self, properties_elem): - """ - Changes a list of properties into fully instanciated properties. - - @param properties_elem An XML element reprensenting a list of - properties - """ - return [] - - def _load_xml_event_filters(self, filters_elem): - """ - Loads up a list of Event Filters. - - @param filters_elem An XML Element representing a list of event filters - """ - transition_list = [] - event_filter_element_list = self._get_direct_descendants_by_tag_name(filters_elem, NODE_COMPONENT) - new_event_filter = None - - for event_filter in event_filter_element_list: - next_state = event_filter.getAttribute(NEXT_STATE_ATTR) - try: - event_filter.removeAttribute(NEXT_STATE_ATTR) - except NotFoundErr: - next_state = None - new_event_filter = self._load_xml_component(event_filter) - - if new_event_filter is not None: - transition_list.append((new_event_filter, next_state)) - - return transition_list - - def _load_xml_subcomponents(self, node, properties): - """ - Loads all the subcomponent node below the given node and inserts them with - the right property name inside the properties dictionnary. - - @param node The parent node that contains one or many property nodes. - @param properties A dictionnary where the subcomponent property names - and the instantiated components will be stored - @returns Nothing. The properties dict will contain the property->comp mapping. - """ - subCompList = self._get_direct_descendants_by_tag_name(node, NODE_SUBCOMPONENT) - - for subComp in subCompList: - property_name = subComp.getAttribute("name") - internal_comp_node = self._get_direct_descendants_by_tag_name(subComp, NODE_COMPONENT)[0] - internal_comp = self._load_xml_component(internal_comp_node) - properties[str(property_name)] = internal_comp - - def _load_xml_subcomponent_lists(self, node, properties): - """ - Loads all the subcomponent lists below the given node and stores them - under the correct property name for that node. - - @param node The node from which we want to read the subComponent lists - @param properties The dictionnary that will contain the mapping of prop->subCompList - @returns Nothing. The values are returns inside the properties dict. - """ - listOf_subCompListNode = self._get_direct_descendants_by_tag_name(node, NODE_SUBCOMPONENTLIST) - for subCompListNode in listOf_subCompListNode: - property_name = subCompListNode.getAttribute("name") - subCompList = [] - for subCompNode in self._get_direct_descendants_by_tag_name(subCompListNode, NODE_COMPONENT): - subComp = self._load_xml_component(subCompNode) - subCompList.append(subComp) - properties[str(property_name)] = subCompList - - def _load_xml_component(self, node): - """ - Loads a single addon component instance from an Xml node. - - @param node The component XML Node to transform - object - @return The addon component object of the correct type according to the XML - description - """ - class_name = node.getAttribute("Class") - - properties = {} - - for prop in node.attributes.keys(): - if prop == "Class" : continue - # security : keep sandboxed - properties[str(prop)] = eval(node.getAttribute(prop)) - - # Read the complex attributes - self._load_xml_subcomponents(node, properties) - self._load_xml_subcomponent_lists(node, properties) - - new_action = addon.create(class_name, **properties) - - if not new_action: - return None - - return new_action - - def _load_xml_actions(self, actions_elem): - """ - Transforms an Actions element into a list of instanciated Action. - - @param actions_elem An XML Element representing a list of Actions - """ - reformed_actions_list = [] - actions_element_list = self._get_direct_descendants_by_tag_name(actions_elem, NODE_COMPONENT) - - for action in actions_element_list: - new_action = self._load_xml_component(action) - - reformed_actions_list.append(new_action) - - return reformed_actions_list - - def _load_xml_states(self, states_elem): - """ - Takes in a States element and fleshes out a complete list of State - objects. - - @param states_elem An XML Element that represents a list of States - """ - reformed_state_list = [] - # item(0) because there is always only one <States> tag in the xml file - # so states_elem should always contain only one element - states_element_list = states_elem.item(0).getElementsByTagName("State") - - for state in states_element_list: - stateName = state.getAttribute("Name") - # Using item 0 in the list because there is always only one - # Actions and EventFilterList element per State node. - actions_list = self._load_xml_actions(state.getElementsByTagName("Actions")[0]) - event_filters_list = self._load_xml_event_filters(state.getElementsByTagName("EventFiltersList")[0]) - reformed_state_list.append(State(stateName, actions_list, event_filters_list)) - - return reformed_state_list - - def _load_xml_fsm(self, fsm_elem): - """ - Takes in an XML element representing an FSM and returns the fully - crafted FSM. - - @param fsm_elem The XML element that describes a FSM - """ - # Load the FSM's name and start state's name - fsm_name = fsm_elem.getAttribute("Name") - - fsm_start_state_name = None - try: - fsm_start_state_name = fsm_elem.getAttribute("StartStateName") - except: - pass - - fsm = FiniteStateMachine(fsm_name, start_state_name=fsm_start_state_name) - - # Load the states - states = self._load_xml_states(fsm_elem.getElementsByTagName("States")) - for state in states: - fsm.add_state(state) - - # Load the actions on this FSM - actions = self._load_xml_actions(fsm_elem.getElementsByTagName("FSMActions")[0]) - for action in actions: - fsm.add_action(action) - - # Load the event filters - events = self._load_xml_event_filters(fsm_elem.getElementsByTagName("EventFiltersList")[0]) - for event, next_state in events: - fsm.add_event_filter(event, next_state) - - return fsm - - - def load_fsm(self, guid, path=None): - """ - Load fsm from xml file whose .ini file guid match argument guid. - """ - # Fetch the directory (if any) - tutorial_dir = path or self._find_tutorial_dir_with_guid(guid) - - # Open the XML file - tutorial_file = os.path.join(tutorial_dir, TUTORIAL_FILENAME) - - xml_dom = xml.dom.minidom.parse(tutorial_file) - - fsm_elem = xml_dom.getElementsByTagName("FSM")[0] - - return self._load_xml_fsm(fsm_elem) - - -class TutorialBundler(object): - """ - This class provide the various data handling methods useable by the tutorial - editor. - """ - - def __init__(self,generated_guid = None, bundle_path=None): - """ - Tutorial_bundler constructor. If a GUID is given in the parameter, the - Tutorial_bundler object will be associated with it. If no GUID is given, - a new GUID will be generated, - """ - - self.Guid = generated_guid or str(uuid.uuid1()) - - #FIXME: Look for the bundle in the activity first (more specific) - #Look for the file in the path if a uid is supplied - if generated_guid: - #General store - store_path = os.path.join(_get_store_root(), generated_guid, INI_FILENAME) - if os.path.isfile(store_path): - self.Path = os.path.dirname(store_path) - else: - #Bundle store - base_bundle_path = _get_bundle_root(bundle_path) - if base_bundle_path: - bundle_path = os.path.join(base_bundle_path, generated_guid, INI_FILENAME) - if os.path.isfile(bundle_path): - self.Path = os.path.dirname(bundle_path) - else: - raise IOError(2,"Unable to locate metadata file for guid '%s'" % generated_guid) - else: - raise IOError(2,"Unable to locate metadata file for guid '%s'" % generated_guid) - - else: - #Create the folder, any failure will go through to the caller for now - store_path = os.path.join(_get_store_root(), self.Guid) - os.makedirs(store_path) - self.Path = store_path - - def write_metadata_file(self, tutorial): - """ - Write metadata to the property file. - @param tutorial Tutorial for which to write metadata - """ - #Create the Config Object and populate it - cfg = SafeConfigParser() - cfg.add_section(INI_METADATA_SECTION) - cfg.set(INI_METADATA_SECTION, INI_GUID_PROPERTY, self.Guid) - cfg.set(INI_METADATA_SECTION, INI_NAME_PROPERTY, tutorial.name) - cfg.set(INI_METADATA_SECTION, INI_XML_FSM_PROPERTY, TUTORIAL_FILENAME) - cfg.add_section(INI_ACTIVITY_SECTION) - cfg.set(INI_ACTIVITY_SECTION, os.environ['SUGAR_BUNDLE_NAME'], - os.environ['SUGAR_BUNDLE_VERSION']) - - #Write the ini file - cfg.write( file( os.path.join(self.Path, INI_FILENAME), 'w' ) ) - - def get_tutorial_path(self): - """ - Return the path of the .ini file associated with the guiven guid set in - the Guid property of the Tutorial_Bundler. If the guid is present in - more than one path, the store_root is given priority. - """ - - store_root = _get_store_root() - bundle_root = _get_bundle_root() - - config = SafeConfigParser() - path = None - - logging.debug("************ Path of store_root folder of activity : " \ - + store_root) - - # iterate in each GUID subfolder - for dir in os.listdir(store_root): - - # iterate for each .ini file in the store_root folder - - for file_name in os.listdir(os.path.join(store_root, dir)): - if file_name.endswith(".ini"): - logging.debug("******************* Found .ini file : " \ - + file_name) - config.read(os.path.join(store_root, dir, file_name)) - if config.get(INI_METADATA_SECTION, INI_GUID_PROPERTY) == self.Guid: - xml_filename = config.get(INI_METADATA_SECTION, - INI_XML_FSM_PROPERTY) - - path = os.path.join(store_root, dir) - return path - - logging.debug("************ Path of bundle_root folder of activity : " \ - + bundle_root) - - - # iterate in each GUID subfolder - for dir in os.listdir(bundle_root): - - # iterate for each .ini file in the bundle_root folder - for file_name in os.listdir(os.path.join(bundle_root, dir)): - if file_name.endswith(".ini"): - logging.debug("******************* Found .ini file : " \ - + file_name) - config.read(os.path.join(bundle_root, dir, file_name)) - if config.get(INI_METADATA_SECTION, INI_GUID_PROPERTY) == self.Guid: - path = os.path.join(bundle_root, self.Guid) - return path - - if path is None: - logging.debug("**************** Error : GUID not found") - raise KeyError - - def write_fsm(self, fsm): - - """ - Save fsm to disk. If a GUID parameter is provided, the existing GUID is - located in the .ini files in the store root and bundle root and - the corresponding FSM is/are created or overwritten. If the GUID is not - found, an exception occur. - """ - - config = SafeConfigParser() - - serializer = XMLSerializer() - path = os.path.join(self.Path, "meta.ini") - config.read(path) - xml_filename = config.get(INI_METADATA_SECTION, INI_XML_FSM_PROPERTY) - serializer.save_fsm(fsm, xml_filename, self.Path) - - - def add_resources(self, typename, file): - """ - Add ressources to metadata. - """ - raise NotImplementedError("add_resources not implemented") |