class BaseFileList(object):
"""Base file list implementation"""
- def scan_paths(self):
- raise NotImplementedError()
+ def __init__(self):
+ self.paths = []
def add_path(self, path):
- raise NotImplementedError()
+ self.paths.append(path)
- def store_cache(self, path):
- pass
+ def store_cache(self, filename):
+ try:
+ logging.debug("Attempting to store cache")
+ fd = open(filename, 'wb')
+ pickle.dump(obj = self, file = fd, protocol = 2)
+ logging.debug("Cache successfully stored")
+ except Exception, e:
+ warning("Storing cache: %s" % e)
- def load_cache(self, filename, rescanPaths = False):
- pass
+ def load_cache(self, filename):
+ try:
+ logging.debug("Attempting to load cache from: %s" % filename)
+ self.paths.sort()
+
+ fd = open(filename, 'rb')
+ tmp = pickle.load(fd)
+
+ if tmp.__class__ != self.__class__:
+ raise ValueError("Using different file list type")
+
+ self.paths.sort()
+ if self.paths != getattr(tmp, "paths"):
+ raise ValueError("Path list changed")
+
+ for attr, value in tmp.__dict__.items():
+ setattr(self, attr, value)
+
+ return True
+
+ except Exception, e:
+ logging.warning("Loading cache: %s" % e)
+ return False
+
+ def scan_paths(self):
+ raise NotImplementedError()
def get_next_image(self):
raise NotImplementedError()
class RandomFileList(BaseFileList):
def __init__(self):
+ super(RandomFileList, self).__init__()
self.list = []
- self.paths = []
self.last_image = None
def scan_paths(self):
logging.debug("Picked file '%s' from list" % self.last_image)
return self.last_image
+ def get_current_image(self):
+ if self.last_image:
+ return self.last_image
+ else:
+ return self.get_next_image()
+
def is_empty(self):
return len(self.list) == 0
class AllRandomFileList(BaseFileList):
def __init__(self):
+ super(AllRandomFileList, self).__init__()
self.list = None
- self.paths = []
self.imagePointer = 0
# Scan the input directory, and then randomize the file list
logging.debug("Ignoring cache, path lists do not match")
except Exception, e:
logging.warning("Loading cache", exc_info=1)
+ else:
+ return True
def get_current_image(self):
return self.list[self.imagePointer]
"""A file list that will pick a file randomly within a directory. Each
directory has the same chance of being chosen."""
def __init__(self):
+ super(FolderRandomFileList, self).__init__()
self.directories = {}
+ self.last_image = None
def scan_paths(self):
pass
logging.debug('filename: "%s"' % filename)
return os.path.join(directory, filename)
+ def get_current_image(self):
+ if self.last_image:
+ return self.last_image
+ else:
+ return self.get_next_image()
+
def is_empty(self):
return len(self.directories.values()) == 0
def cmd_rescan(self):
self.filelist.scan_paths()
- self.cmd_next()
def cmd_pause(self):
if self.task is not None: