All libraries should implement this."""
raise NotImplementedError()
+ def search(self, string):
+ """Returns an iterable object of mangas in this library that
+ matches the search string in a library-dependent manner. While
+ each library is at liberty to define its own matching
+ criteria, it is probably likely to involve something akin to
+ searching for keywords in the titles of the library.
+
+ Searching may return very many results and may be slow to
+ iterate.
+
+ Not all libraries need implement this."""
+ raise NotImplementedError()
+
def byid(self, id):
"""Returns a previously known manga by its string ID, or
raises KeyError if no such manga could be found.
def __iter__(self):
return self
-def _lazymod(name):
- return __import__(name, fromlist=["dummy"])
-class _lazydict(object):
- def __init__(self):
- self.bk = {}
- def __setitem__(self, key, val):
- self.bk[key] = "u", val
- def __getitem__(self, key):
- st, v = self.bk[key]
- if st == "u":
- v = self.bk[key] = v()
- return v
-libraries = _lazydict()
-libraries["mf"] = lambda: _lazymod("manga.mangafox").library()
+loaded = {}
+def findlib(name):
+ def load(name):
+ mod = __import__(name, fromlist=["dummy"])
+ if not hasattr(mod, "library"):
+ raise ImportError("module " + name + " is not a manga library")
+ return mod.library()
+ if name not in loaded:
+ try:
+ loaded[name] = load("manga." + name)
+ except ImportError:
+ loaded[name] = load(name)
+ return loaded[name]