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import libxml2
import os
import logging
import random
IMAGES_PATH = 'games/drumgit/images'
class Model(object):
''' The model of the activity. Contains methods to read and save
the configuration for a game from xml. Stores the pairs and grid
information.
'''
def __init__(self, gamepath, dtdpath, name='noname'):
self.name = name
self.pairs = {}
self.grid = []
self.gamepath = gamepath
self.dtdpath = dtdpath
try:
self.dtd = libxml2.parseDTD(None, os.path.join(self.dtdpath, 'memosono.dtd'))
except libxml2.parserError, e:
logging.error('No memosono.dtd found ' +str(e))
self.dtd = None
self.ctxt = libxml2.newValidCtxt()
def read(self, filename):
try:
doc = libxml2.parseFile(os.path.join(self.gamepath, filename))
if doc.validateDtd(self.ctxt, self.dtd):
# get the requested nodes
xpa = doc.xpathNewContext()
res = xpa.xpathEval("//*")
# write their content to the data structure
for elem in res:
attributes = elem.get_properties()
pair = []
idpair = 0
for attribute in attributes:
if(attribute.name == 'text'):
pass
if(attribute.name == 'id'):
idpair = int(attribute.content)
if(attribute.name == 'mother'):
pair.append(attribute.content)
if(attribute.name == 'child'):
pair.append(attribute.content)
if(attribute.name == 'color'):
pair.append(int(attribute.content))
if( elem.name == 'memosono' ):
self.name = attribute.content
if( elem.name != 'memosono' ):
self.pairs[idpair] = pair
xpa.xpathFreeContext()
else:
logging.error('Error in validation of the file')
doc.freeDoc()
except libxml2.parserError, e:
logging.error('Error parsing file ' +str(e))
def save(self, filename):
doc = libxml2.newDoc("1.0")
root = doc.newChild(None, "memosono", None)
root.setProp("name", self.name)
for key in self.pairs:
elem = root.newChild(None, "pair", None)
elem.setProp("id", key)
elem.setProp("mother", self.pairs[key][0])
elem.setProp("child", self.pairs[key][1])
elem.setProp("color", self.pairs[key][2])
if doc.validateDtd(self.ctxt, self.dtd):
doc.saveFormatFile(filename, 1)
doc.freeDoc()
def def_grid(self):
print 'pairs: %s' %self.pairs
### create grid from pairs information
for key in self.pairs.iterkeys():
self.grid.append((key, 0))
self.grid.append((key, 1))
print 'self.grid: %s'%self.grid
### shuffle the grid tiles
random.shuffle(self.grid)
print 'self.grid after shufle: %s'%self.grid
def gettile(self, tilenum):
pairkey, moch = self.grid[tilenum]
obj = os.path.join(IMAGES_PATH, self.pairs[pairkey][moch])
color = self.pairs[pairkey][2]
# logger.debug('obj=%s color=%s'%(obj, color))
return (obj, color)
def same(self, a, b):
pairkeya, moch = self.grid[a]
pairkeyb, moch = self.grid[b]
return (pairkeya == pairkeyb)
if __name__ == '__main__':
print "[Read game from file] "
model = Model()
model.read('memosono.xml')
print " name=" + model.name
print " pairs=%s" %model.pairs
elemkey = '0'
if model.pairs.has_key(elemkey):
del model.pairs[elemkey]
model.pairs['2'] = ['frettchen.jpg', 'frettchen.wav']
print "[Write game to file] "
model.save('memosono.xml')
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