1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
from urlparse import urlparse, parse_qs
from .third_libs.link_header import parse_link_value
class Method(object):
def __init__(self, method, request, **method_args):
self.method = method
self.request = request
self.args = method_args
self.cache = {}
def cached(func):
def wrapper(self, page=1):
if str(page) in self.cache:
return self.cache[str(page)]
return func(self, page)
return wrapper
def if_needs_lastpage(func):
def wrapper(self, response):
has_link = response.headers.get('link')
has_last_page = hasattr(self, 'last_page')
if not has_last_page and has_link:
return func(self, response)
elif not has_last_page and not has_link:
self.last_page = 1
return wrapper
@if_needs_lastpage
def __set_last_page_from(self, response):
link_parsed = parse_link_value(response.headers['link'])
def get_last(url):
url_rels = link_parsed[url]
return (url_rels.get('rel') == 'last')
url_last = filter(get_last, link_parsed)
query = urlparse(url_last.pop()).query
self.last_page = int(parse_qs(query).get('page').pop())
@cached
def __call__(self, page=1):
all_args = self.args.copy()
all_args.update(page=page)
response = self.method(self.request, **all_args)
self.__set_last_page_from(response)
resource = self.request.resource
self.cache[str(page)] = resource.loads(response.content)
return self.cache[str(page)]
@property
def last(self):
if not hasattr(self, 'last_page'):
self()
return self.last_page
class Page(object):
""" """
def __init__(self, getter, page=1):
""" """
self.getter = getter
self.page = page
def __iter__(self):
return self
def __add__(self, number):
return self.page + number
def __radd__(self, number):
return number + self.page
def __sub__(self, number):
return self.page - number
def __rsub__(self, number):
return number - self.page
def __lt__(self, number):
return self.page < number
def __le__(self, number):
return self.page <= number
def __eq__(self, number):
return self.page == number
def __ne__(self, number):
return self.page != number
def __gt__(self, number):
return self.page > number
def __ge__(self, number):
return self.page >= number
@property
def resources(self):
return getattr(self, '_count', None) or u"~"
def get_content(func):
def wrapper(self):
if not hasattr(self, '_count'):
content = self.getter(self.page)
self._count = len(content)
self.iterable = iter(content)
return func(self)
return wrapper
@get_content
def __next__(self):
try:
return self.iterable.next()
except StopIteration:
self.iterable = iter(self.getter(self.page))
raise StopIteration
def next(self):
return self.__next__()
def __str__(self):
return '<{name}{page} resources={resources}>'.format(
name=self.__class__.__name__,
page=self.page,
resources=self.resources)
def __repr__(self):
return "%s[%d]" % (self.__str__(), id(self))
class Result(object):
"""
Result is a very lazy paginator. It only do a real request when is needed
You have several ways to consume it
#. Iterating over the result::
result = some_request()
for page in result:
for resource in page:
print resource
#. With a generator::
result = some_request()
for resource in result.iterator():
print resource
#. As a list::
result = some_request()
print result.all()
#. Also you can request some page manually
.. autoattribute:: pygithub3.core.result.Result.pages
.. automethod:: pygithub3.core.result.Result.get_page
Each ``Page`` is an iterator and contains resources::
result = some_request()
assert result.pages > 3
page3 = result.get_page(3)
page3_resources = list(page3)
"""
def __init__(self, client, request, **kwargs):
self.getter = Method(client.get, request, **kwargs)
self.page = Page(self.getter)
def __iter__(self):
return self
def __next__(self):
if self.page <= self.pages:
page_to_return = self.page
self.page = Page(self.getter, page_to_return + 1)
return page_to_return
self.page = Page(self.getter)
raise StopIteration
def next(self):
return self.__next__()
@property
def pages(self):
""" Total number of pages in request """
return self.getter.last
def get_page(self, page):
""" Get ``Page`` of resources
:param int page: Page number
"""
if page in xrange(1, self.pages + 1):
return Page(self.getter, page)
return None
def iterator(self):
for page in self:
for resource in page:
yield resource
def all(self):
return list(self.iterator())
|
