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# Copyright (C) 2006, 2007, 2008 One Laptop Per Child
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import libxml2
from os import environ, makedirs, chmod
from os.path import join, basename, isdir, split, normpath
import logging
import random
import gobject
import zipfile
import tempfile
from sugar import profile
from sugar.datastore import datastore
from sugar.activity.activity import get_bundle_path, get_activity_root
_logger = logging.getLogger('model')
class Pair(gobject.GObject):
__gproperties__ = {
'aimg' : (str, None, None, None, gobject.PARAM_READWRITE),
'asnd' : (str, None, None, None, gobject.PARAM_READWRITE),
'achar': (str, None, None, None, gobject.PARAM_READWRITE),
'bimg' : (str, None, None, None, gobject.PARAM_READWRITE),
'bsnd' : (str, None, None, None, gobject.PARAM_READWRITE),
'bchar': (str, None, None, None, gobject.PARAM_READWRITE),
'aspeak': (str, None, None, None, gobject.PARAM_READWRITE),
'bspeak': (str, None, None, None, gobject.PARAM_READWRITE),
'color' : (gobject.TYPE_INT, 'Base', 'Base', 0, 10, 0, \
gobject.PARAM_READWRITE)
}
def __init__(self):
gobject.GObject.__init__(self)
self._properties = {'aimg':None, 'asnd':None, 'achar':None, 'bimg':None,
'bsnd':None, 'bchar':None, 'color':100,
'aspeak':None, 'bspeak':None}
def do_get_property(self, pspec):
"""Retrieve a particular property from our property dictionary
"""
if pspec.name == "aimg":
return self._properties["aimg"]
elif pspec.name == "asnd":
return self._properties["asnd"]
elif pspec.name == "achar":
return self._properties["achar"]
elif pspec.name == "bimg":
return self._properties["bimg"]
elif pspec.name == "bsnd":
return self._properties["bsnd"]
elif pspec.name == "bchar":
return self._properties["bchar"]
elif pspec.name == "color":
return self._properties["color"]
elif pspec.name == "aspeak":
return self._properties["aspeak"]
elif pspec.name == "bspeak":
return self._properties["bspeak"]
def set_property(self, name, value):
if name == 'aimg':
self._properties['aimg'] = value
elif name == "asnd":
self._properties["asnd"] = value
elif name == "achar":
self._properties["achar"] = value
elif name == "bimg":
self._properties["bimg"] = value
elif name == "bsnd":
self._properties["bsnd"] = value
elif name == "bchar":
self._properties["bchar"] = value
elif name == "color":
self._properties["color"] = value
elif name == "aspeak":
self._properties["aspeak"] = value
elif name == "bspeak":
self._properties["bspeak"] = value
class Model(object):
''' The model of the activity. Contains methods to read and write
the configuration for a game from xml. Stores the pairs and grid
information.
'''
def __init__(self, game_path=None):
self.data = {}
if game_path is None:
game_path = get_activity_root()
if isdir(game_path):
self.game_path = game_path
else:
_logger.error('Game_path not found in %s' % game_path)
return
self.data['face'] = ''
self.data['align'] = '1'
try:
self.dtd = libxml2.parseDTD(None, join(get_bundle_path(),
'memorize.dtd'))
except libxml2.parserError, e:
_logger.error('Init: no memorize.dtd found ' +str(e))
self.dtd = None
self.ctxt = libxml2.newValidCtxt()
self.pairs = {}
self.grid = []
# used by the leader of the game to keep track of the game state
self.players = {}
self.player_active = 0
self.selected = 0
self.turn = 0
self.started = 0
self.count = 0
def read(self, game_file):
tmp_root = join(environ['SUGAR_ACTIVITY_ROOT'], 'instance')
temp_folder = tempfile.mkdtemp(dir=tmp_root)
chmod(temp_folder, 0777)
self.data['key'] = basename(game_file)
self.data['game_file'] = game_file
self.data['path'] = temp_folder
self.data['pathimg'] = join(self.data['path'], 'images')
self.data['pathsnd'] = join(self.data['path'], 'sounds')
''' extracts files in the zip file '''
game_name = basename(game_file)[:-4]
zipFile = zipfile.ZipFile(game_file, "r")
for each in zipFile.namelist():
if not each.endswith('/'):
root, name = split(each)
directory = normpath(join(self.data['path'], root))
if not isdir(directory):
makedirs(directory)
file(join(directory, name), 'wb').write(zipFile.read(each))
self.pairs = {}
''' reads the configuration from an xml file '''
try:
xml_file = join(environ['SUGAR_ACTIVITY_ROOT'],
self.data['path'], 'game.xml')
doc = libxml2.parseFile(xml_file)
if doc.validateDtd(self.ctxt, self.dtd):
# get the requested nodes
xpa = doc.xpathNewContext()
res = xpa.xpathEval("//*")
# write their content to the data structure
idpair = 0
for elem in res:
attributes = elem.get_properties()
pair = Pair()
if(elem.name == 'pair'):
for attribute in attributes:
if(attribute.name == 'text'):
pass
else:
pair.set_property(attribute.name,
attribute.content)
self.pairs[str(idpair)] = pair
idpair += 1
elif(elem.name == 'memorize'):
for attribute in attributes:
if(attribute.name == 'text'):
pass
elif(attribute.name == 'name'):
self.data['name'] = attribute.content
elif(attribute.name == 'scoresnd'):
self.data['scoresnd'] = attribute.content
elif(attribute.name == 'winsnd'):
self.data['winsnd'] = attribute.content
elif(attribute.name == 'divided'):
self.data['divided'] = attribute.content
elif(attribute.name == 'face'):
self.data['face'] = attribute.content
elif(attribute.name == 'face1'):
self.data['face1'] = attribute.content
elif(attribute.name == 'face2'):
self.data['face2'] = attribute.content
elif(attribute.name == 'align'):
self.data['align'] = attribute.content
elif(attribute.name == 'equal_pairs'):
self.data['equal_pairs'] = attribute.content
xpa.xpathFreeContext()
else:
_logger.error('Read: Error in validation of the file')
doc.freeDoc()
return 1
doc.freeDoc()
return 0
except libxml2.parserError, e:
_logger.error('Read: Error parsing file ' +str(e))
return 2
def write(self, equal_pairs, divided):
''' writes the configuration to an xml file '''
doc = libxml2.newDoc("1.0")
root = doc.newChild(None, "memorize", None)
if(self.data.get('name', None) != None):
root.setProp("name", self.data['name'])
if divided:
root.setProp('divided', '1')
root.setProp('face1', '1')
root.setProp('face2', '2')
else:
root.setProp('divided', '0')
if equal_pairs:
root.setProp('equal_pairs', str(equal_pairs))
if(self.data.get('scoresnd', None) != None):
root.setProp("scoresnd", self.data['scoresnd'])
if(self.data.get('winsnd', None) != None):
root.setProp("winsnd", self.data['winsnd'])
if(self.data.get('divided', None) != None):
root.setProp("divided", self.data['divided'])
if(self.data.get('face', None) != None):
root.setProp("face", self.data['face'])
if(self.data.get('face1', None) != None):
root.setProp("face1", self.data['face1'])
if(self.data.get('face2', None) != None):
root.setProp("face2", self.data['face2'])
if(self.data.get('align', None) != None):
root.setProp("align", self.data['align'])
for key in self.pairs:
elem = root.newChild(None, "pair", None)
if self.pairs[key].props.aimg != None:
elem.setProp("aimg", self.pairs[key].props.aimg)
if self.pairs[key].props.asnd != None:
elem.setProp("asnd", self.pairs[key].props.asnd)
if self.pairs[key].props.achar != None:
elem.setProp("achar", self.pairs[key].props.achar)
if self.pairs[key].props.bimg != None:
elem.setProp("bimg", self.pairs[key].props.bimg)
if self.pairs[key].props.bsnd != None:
elem.setProp("bsnd", self.pairs[key].props.bsnd)
if self.pairs[key].props.bchar != None:
elem.setProp("bchar", self.pairs[key].props.bchar)
if self.pairs[key].props.aspeak != None:
elem.setProp("aspeak", self.pairs[key].props.aspeak)
if self.pairs[key].props.bspeak != None:
elem.setProp("bspeak", self.pairs[key].props.bspeak)
# elem.setProp("color", str(self.pairs[key].props.color))
if doc.validateDtd(self.ctxt, self.dtd):
doc.saveFormatFile(join(self.game_path, 'game.xml'), 1)
else:
_logger.error('Write: Error in validation of the file')
doc.freeDoc()
return 2
doc.freeDoc()
return 0
def def_grid(self, size):
''' create the grid for the play from the pairs information
and shuffles the grid so they always appear in a different
place
'''
psize = (size * size / 2)
_logger.debug('Size requested: %d', psize)
self.grid = []
temp1 = []
temp2 = []
i = 0
# shuffle the pairs first to avoid only taking the first ones
# when there are more pairs in the config file then the grid is using
keys = self.pairs.keys()
random.shuffle(keys)
for key in keys:
if i < psize:
elem = {}
elem['pairkey'] = key
elem['state'] = '0'
elem['ab'] = 'a'
if self.pairs[key].props.aimg != None:
elem['img'] = self.pairs[key].props.aimg
if self.pairs[key].props.asnd != None:
elem['snd'] = self.pairs[key].props.asnd
if self.pairs[key].props.achar != None:
elem['char'] = self.pairs[key].props.achar
if self.pairs[key].props.aspeak != None:
elem['speak'] = self.pairs[key].props.aspeak
temp1.append(elem)
elem = {}
elem['pairkey'] = key
elem['state'] = '0'
elem['ab'] = 'b'
if self.pairs[key].props.bimg != None:
elem['img'] = self.pairs[key].props.bimg
if self.pairs[key].props.bsnd != None:
elem['snd'] = self.pairs[key].props.bsnd
if self.pairs[key].props.bchar != None:
elem['char'] = self.pairs[key].props.bchar
if self.pairs[key].props.bspeak != None:
elem['speak'] = self.pairs[key].props.bspeak
temp2.append(elem)
i += 1
else:
break
numpairs = len(self.pairs)
if numpairs < psize:
_logger.debug('Defgrid: Not enough pairs, requested=%s had=%s'
% (psize, numpairs))
self.data['size'] = str(size)
if self.data['divided'] == '1':
random.shuffle(temp1)
random.shuffle(temp2)
temp1.extend(temp2)
else:
temp1.extend(temp2)
random.shuffle(temp1)
self.grid = temp1
_logger.debug('Defgrid: grid( size=%s ): %s'
% (self.data['size'], self.grid))
_logger.debug('Defgrid: data: %s', self.data)
def set_data_grid(self, data, grid):
self.data = data
self.grid = grid
def save_byte_array(self, path, title= None, color= None):
if color == None:
color = profile.get_color().to_string()
_logger.debug('Save new game in datastore')
# Saves the zip in datastore
gameObject = datastore.create()
gameObject.metadata['title'] = title
gameObject.metadata['mime_type'] = 'application/x-memorize-project'
gameObject.metadata['icon-color'] = color
gameObject.file_path = path
datastore.write(gameObject)
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