forked from mutantmonkey/phenny
/
wiki.py
162 lines (122 loc) · 4.02 KB
/
wiki.py
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
import html
import json
import lxml.html
import re
from requests.exceptions import ContentDecodingError, HTTPError
from urllib.parse import quote, unquote
from tools import truncate
import web
from web import ServerFault
abbrs = [
'etc', 'ca', 'cf', 'Co', 'Ltd', 'Inc', 'Mt', 'Mr', 'Mrs',
'Dr', 'Ms', 'Rev', 'Fr', 'St', 'Sgt', 'pron', 'approx', 'lit',
'syn', 'transl', 'sess', 'fl', 'Op', 'Dec', 'Brig', 'Gen',
] + list('ABCDEFGHIJKLMNOPQRSTUVWXYZ') + list('abcdefghijklmnopqrstuvwxyz')
no_abbr = ''.join('(?<! ' + abbr + ')' for abbr in abbrs)
breaks = re.compile('(%s)+' % '|'.join([
no_abbr + '[.!?](?:[ \n]|\[[0-9]+\]|$)',
'。', '｡', '．', '！', '？',
]))
def format_term(term):
term = term.replace(' ', '_')
term = term[0].upper() + term[1:]
return term
def deformat_term(term):
term = term.replace('_', ' ')
return term
def format_section(section):
section = section.replace(' ', '_')
section = quote(section)
section = section.replace('%', '.')
section = section.replace(".3A", ":")
return section
def parse_term(origterm):
if "#" in origterm:
term, section = origterm.split("#")[:2]
term, section = term.strip(), section.strip()
else:
term = origterm.strip()
section = None
return (term, section)
def good_content(text, content):
if not content.strip():
return False
if not breaks.search(content):
return False
if text.tag not in ['p', 'ul', 'ol']:
return False
if text.find(".//span[@id='coordinates']") is not None:
return False
return True
def search_content(text):
if text is None:
return ""
content = text.text_content()
while not good_content(text, content):
text = text.getnext()
if text is None:
return ""
try:
content = text.text_content()
except ValueError:
# HtmlComment causes weird errors
content = ""
return content
def extract_snippet(match, origsection=None):
html, url = match
page = lxml.html.fromstring(html)
article = page.get_element_by_id('mw-content-text')
if origsection:
section = format_section(origsection)
text = article.find(".//span[@id='%s']" % section)
url += "#" + unquote(section)
if text is None:
return ("No '%s' section found." % origsection, url)
text = text.getparent().getnext()
content = search_content(text)
if not content:
return ("No section text found.", url)
else:
text = article.find('./p')
if text is None:
text = article.find('./div/p')
content = search_content(text)
if not content:
return ("No introduction text found.", url)
sentences = [x.strip() for x in breaks.split(content)]
return (sentences[0], url)
class Wiki(object):
def __init__(self, endpoints, lang):
if lang:
self.endpoints = {}
for key in endpoints:
self.endpoints[key] = endpoints[key] % lang
else:
self.endpoints = endpoints
def search(self, term):
try:
exactterm = format_term(term)
exactterm = quote(exactterm)
exacturl = self.endpoints['url'].format(exactterm)
html = web.get(exacturl)
return (html, exacturl)
except HTTPError:
pass
term = deformat_term(term)
term = quote(term)
apiurl = self.endpoints['api'].format(term)
try:
result = json.loads(web.get(apiurl))
except ValueError as e:
raise ContentDecodingError(str(e))
if 'error' in result:
raise ServerFault(result['error'])
result = result['query']['search']
if not result:
return None
term = result[0]['title']
term = format_term(term)
term = quote(term)
url = self.endpoints['url'].format(term)
html = web.get(url)
return (html, url)