# Copyright (C) 2009, Tutorius.org # Copyright (C) 2009, Jean-Christophe Savard # # 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 shutil import uuid import xml.dom.minidom from sugar.tutorius import gtkutils, overlayer from sugar.tutorius.core import Tutorial, State, FiniteStateMachine from sugar.tutorius.actions import DialogMessage, OnceWrapper, BubbleMessage from sugar.tutorius.filters import GtkWidgetEventFilter, TimerEvent from ConfigParser import SafeConfigParser def _get_store_root(): path = os.path.join(os.getenv("SUGAR_PREFIX"),"share","tutorius","data") if os.path.exists(path): return path else: os.makedirs(path) return path def _get_bundle_root(): path = os.path.join(os.getenv("SUGAR_BUNDLE_PATH"),"data","tutorius","data") if os.path.exists(path): return path else: os.makedirs(path) return path 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" class TutorialStore: def list_avaible_tutorials(self, activity_name, activity_vers): """ Recuperate the list of all tutorials present on disk for a given activity. """ store_root = _get_store_root() bundle_root = _get_bundle_root() logging.debug("*********** Path of store_root : " + store_root) # Create /data/tutorius if no exists if not os.path.exists(store_root): os.mkdir(store_root) logging.debug("************* Creating %s folder" % store_root) tutoGuidName = {} # iterate in each GUID subfolder for dir in os.listdir(store_root): # iterate for each ".ini" file in the activity store_root folder for file_name in os.listdir(store_root + "/" + dir): if file_name.endswith(".ini"): logging.debug("************** .ini file found : " + file_name) # Filter for just .ini files who metadata ACTIVITY_NAME # match 'activity_name' given in argument. config = SafeConfigParser() config.read(file_name) # Get all activity tuples (Activity_Name: Activity_Version) file_activity_tuples = config.items(INI_ACTIVITY_SECTION) for i in range(0, len(file_activity_tuples) - 1): if file_activity_tuples[i][0] == activity_name and \ int(file_activity_tuples[i][1]) == activity_vers: # Add this tutorial guid and name in the dictionary file_activity_guid = config.get(INI_METADATA_SECTION, INI_GUID_PROPERTY) file_activity_name = config.get(INI_METADATA_SECTION, INI_NAME_PROPERTY) tutoGuidName[file_activity_name] = file_activity_guid return tutoGuidName class Serializer: """ Interface that provide serializing and deserializing of the FSM used in the tutorials to/from disk. Must be inherited. """ def save_fsm(self,fsm, guid = None): """ 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. """ NotImplementedError def load_fsm(self, guid): """ Load fsm from disk. """ 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 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 dont exist, it will be created. """ fsm_xml = xml.dom.minidom.Document() fsm_element = doc.createElementNS("http://tutorius.org", "FSM") fsm_xml.appendChild(fsm_element) fsm_element.setAttributeNS("http://tutorius.org", "fsm:Name", fsm.name) fsm_element.setAttributeNS("http://tutorius.org", "fsm:StartStateName", fsm.start_state_name) #fsm_element = doc. tutorial_element.appendChild(fsm_element) ## logging.debug("************ found .tml file : " + file_name) ## key_line = linecache.getline(path + file_name, 1) ## key_line = key_line.split("\n")[0] ## fileKey = key_line.split("--KEY::")[1] ## logging.debug("************ fileKey = " + fileKey) ## if key == fileKey: ## logging.debug("************ Key : " + key + \ ## " = fileKey : " + fileKey) ## tml = file(path + file_name, "r") ## str = tml.read() ## pick = str.split("--PICKLE::")[1] ## ## fsm = pickle.loads(pick) ## tuto = {key:Tutorial(key,fsm)} ## ## return tuto def load_fsm(self, guid): """ Load fsm from xml file who .ini file guid match argument guid. """ ## ## path = os.getenv("SUGAR_ACTIVITY_ROOT") + "/data/" ## # Create /data/ folder if no exists ## if not os.path.exists(path): ## os.mkdir(path) ## logging.debug("************* Creating data folder") ## ## # Save the dictionnary to .tml file ## tutoSave = file(path + filename + ".tml", 'w') ## str = "--KEY::" + key + "\n--NAME::" + name + "\n--PICKLE::" + \ ## pickle.dumps(fsm,0) ## tutoSave.write(str) ## tutoSave.close() class TutorialBundler: """ This class provide the various data handling methods useable by the tutorial editor. """ def __init__(self,generated_guid = 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 uuid.uuid1() #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 bundle_path = os.path.join(_get_bundle_root(), 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: #Create the folder, any failure will go through to the caller for now store_path = os.path.join(_get_store_root(), generated_guid) os.mkdir(store_path) self.Path = store_path def __SetGuid(self, value): self.__guid = value def __GetGuid(self): return self.__guid def __DelGuid(self): del self.__guid def __SetPath(self, value): self.__path = value def __GetPath(self): return self.__path def __DelPath(self): del self.__path Guid = property(fget=__SetGuid, fset=__GetGuid, fdel=__DelGuid, doc="The guid associated with the Tutorial_Bundler") Path = property(fget=__SetPath, fset=__GetPath, fdel=__DelPath, doc="The path associated with the Tutorial_Bundler") 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) #Write the ini file cfg.write( file( os.path.join(self.Path, INI_FILENAME) ) ) 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(store_root + "/" + dir): if file_name.endswith(".ini"): logging.debug("******************* Found .ini file : " \ + file_name) config.read(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, self.Guid) 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(bundle_root + "/" + dir): if file_name.endswith(".ini"): logging.debug("******************* Found .ini file : " \ + file_name) config.read(file_name) if config.get(INI_METADATA_SECTION, INI_GUID_PROPERTY) == 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, guid=None): """ 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() if guid is not None: path = get_tutorial_path() + "/meta.ini" config.read(path) xml_filename = config.get(INI_METADATA_SECTION, INI_XML_FSM_PROPERTY) save_fsm(fsm, xml_filename, store_root) def add_ressource(self, file): """ Add ressource in tutorial directory return True if success or if file is already in tutorial directory return False if file is a directory """ path = get_tutorial_path() if os.path.isfile(file): filename = os.split(file) target = os.path.join(path,filename) if os.path.samefile(file,target): return True else: try: shutil.copy(file,target) return True #This error is raised if the file already exists except shutil.Error, err: logger.debug(err) return True #General error for copying file except IOError,err: logger.debug(err) return False else: logger.debug("file is a directory :"+file) return False