# parameters for engines with paging support # # number of results on each page # (only needed if the site requires not a page number, but an offset) page_size = 1 # number of the first page (usually 0 or 1) first_page_num = 1
defiterate(iterable): if type(iterable) == dict: it = iterable.iteritems()
else: it = enumerate(iterable) for index, value in it: yield str(index), value
defis_iterable(obj): if type(obj) == str: returnFalse if type(obj) == unicode: returnFalse return isinstance(obj, Iterable)
defparse(query): q = [] for part in query.split('/'): if part == '': continue else: q.append(part) return q
defdo_query(data, q): ret = [] ifnot q: return ret
qkey = q[0]
for key, value in iterate(data):
if len(q) == 1: if key == qkey: ret.append(value) elif is_iterable(value): ret.extend(do_query(value, q)) else: ifnot is_iterable(value): continue if key == qkey: ret.extend(do_query(value, q[1:])) else: ret.extend(do_query(value, q)) return ret