def load_persistent(self):
try:
file = open(os.path.join(self.settingsdir,'persist.xml'), 'r')
doc = xml.parse(file)
if doc.documentElement.tagName == 'session':
waypoint_list = doc.getElementsByTagName('waypoints')[0]
sources = waypoint_list.getElementsByTagName('source')
for source in sources:
currentSource = Source(source.getAttribute('type'))
if currentSource.name == "Manual Waypoints":
self.manualSource = currentSource
sourceIter = self.wpList.append(None,(currentSource,))
waypoints=source.getElementsByTagName('wp')
for waypoint in waypoints:
wp=Waypoint()
name_element = \
waypoint.getElementsByTagName('name')[0]
lat_element = \
waypoint.getElementsByTagName('latitude')[0]
lon_element = \
waypoint.getElementsByTagName('longitude')[0]
alt_element = \
waypoint.getElementsByTagName('altitude')[0]
wp.name = string.strip(name_element.firstChild.data)
wp.lat=float(lat_element.firstChild.data)
wp.lon=float(lon_element.firstChild.data)
wp.alt=float(alt_element.firstChild.data)
#print '---'+wp.name
#Append Waypoint to correct Source Object
self.wpList.append(sourceIter,(wp,))
#if document is empty or contains garbage raise IOError after cleaning up
else:
doc.unlink()
file.close()
raise IOError
doc.unlink()
file.close()
return True
except(IOError):
#The File is not available for reading so insert standard Source into the list
currentSource = Source('Manual Waypoints')
self.manualSource = currentSource
self.wpList.append(None,(currentSource,))
return False
def load_from_file(self, filename):
try:
file = open(filename, 'r')
doc = xml.parse(file)
currentSource = Source(os.path.basename(filename))
sourceIter = self.wpList.append(None,(currentSource,))
if doc.documentElement.tagName == 'gpx':
waypoints = doc.getElementsByTagName('wpt')
for waypoint in waypoints:
wp=Waypoint()
wp.lat=float(waypoint.getAttribute('lat'))
wp.lon=float(waypoint.getAttribute('lon'))
alt_element = \
waypoint.getElementsByTagName('ele')
if alt_element.length > 0:
wp.alt=float(alt_element[0].firstChild.data)
name_element = \
waypoint.getElementsByTagName('name')
if name_element.length > 0:
wp.name = string.strip(name_element[0].firstChild.data)
#Append Waypoint to correct Source Object
self.wpList.append(sourceIter,(wp,))
#if document is empty or contains garbage raise IOError after cleaning up
else:
doc.unlink()
file.close()
raise IOError
doc.unlink()
file.close()
return True
except(IOError):
return False