|
| 1 | +#!/usr/bin/env python |
| 2 | +# -*- encoding: utf-8 -*- |
| 3 | + |
| 4 | +import functools |
| 5 | + |
| 6 | + |
| 7 | +class Method(object): |
| 8 | + """ It wraps the requester method, with behaviour to results """ |
| 9 | + |
| 10 | + def __init__(self, method, request, **method_args): |
| 11 | + self.method = functools.partial(method, request, **method_args) |
| 12 | + self.resource = request.resource |
| 13 | + self.cache = {} |
| 14 | + |
| 15 | + def __call__(self): |
| 16 | + raise NotImplementedError |
| 17 | + |
| 18 | + |
| 19 | +class Page(object): |
| 20 | + """ Iterator of resources """ |
| 21 | + |
| 22 | + def __init__(self, getter, page=1): |
| 23 | + self.getter = getter |
| 24 | + self.page = page |
| 25 | + |
| 26 | + def __iter__(self): |
| 27 | + return self |
| 28 | + |
| 29 | + def __add__(self, number): |
| 30 | + return self.page + number |
| 31 | + |
| 32 | + def __radd__(self, number): |
| 33 | + return number + self.page |
| 34 | + |
| 35 | + def __sub__(self, number): |
| 36 | + return self.page - number |
| 37 | + |
| 38 | + def __rsub__(self, number): |
| 39 | + return number - self.page |
| 40 | + |
| 41 | + def __lt__(self, number): |
| 42 | + return self.page < number |
| 43 | + |
| 44 | + def __le__(self, number): |
| 45 | + return self.page <= number |
| 46 | + |
| 47 | + def __eq__(self, number): |
| 48 | + return self.page == number |
| 49 | + |
| 50 | + def __ne__(self, number): |
| 51 | + return self.page != number |
| 52 | + |
| 53 | + def __gt__(self, number): |
| 54 | + return self.page > number |
| 55 | + |
| 56 | + def __ge__(self, number): |
| 57 | + return self.page >= number |
| 58 | + |
| 59 | + @property |
| 60 | + def resources(self): |
| 61 | + return getattr(self, 'count', None) or '~' |
| 62 | + |
| 63 | + def get_content(func): |
| 64 | + def wrapper(self): |
| 65 | + if not hasattr(self, 'count'): |
| 66 | + content = self.getter(self.page) |
| 67 | + self.count = len(content) |
| 68 | + self.iterable = iter(content) |
| 69 | + return func(self) |
| 70 | + return wrapper |
| 71 | + |
| 72 | + @get_content |
| 73 | + def __next__(self): |
| 74 | + try: |
| 75 | + return self.iterable.next() |
| 76 | + except StopIteration: |
| 77 | + self.iterable = iter(self.getter(self.page)) |
| 78 | + raise StopIteration |
| 79 | + |
| 80 | + def next(self): |
| 81 | + return self.__next__() |
| 82 | + |
| 83 | + def __str__(self): |
| 84 | + return '<{name}{page} resources={resources}>'.format( |
| 85 | + name=self.__class__.__name__, |
| 86 | + page=self.page, |
| 87 | + resources=self.resources) |
| 88 | + |
| 89 | + |
| 90 | +class Result(object): |
| 91 | + """ Iterator of pages """ |
| 92 | + |
| 93 | + def __init__(self, method): |
| 94 | + self.getter = method |
| 95 | + |
| 96 | + def __iter__(self): |
| 97 | + return self |
| 98 | + |
| 99 | + def next(self): |
| 100 | + return self.__next__() |
| 101 | + |
| 102 | + def iterator(self): |
| 103 | + """ generator """ |
| 104 | + for page in self: |
| 105 | + for resource in page: |
| 106 | + yield resource |
| 107 | + |
| 108 | + def all(self): |
| 109 | + return list(self.iterator()) |
0 commit comments