h/plugins/wolframalpha.py

57 lines
1.3 KiB
Python

import re
from util import hook, http
@hook.command('wa')
@hook.command
def wolframalpha(inp):
".wa/.wolframalpha <query> -- scrapes Wolfram Alpha's" \
" results for <query>"
url = "http://www.wolframalpha.com/input/?asynchronous=false"
h = http.get_html(url, i=inp)
pods = h.xpath("//div[@class='pod ']")
pod_texts = []
for pod in pods:
heading = pod.find('h2')
if heading is not None:
heading = heading.text_content().strip()
if heading.startswith('Input'):
continue
else:
continue
results = []
for alt in pod.xpath('div/div[@class="output pnt"]/img/@alt'):
alt = alt.strip().replace('\\n', '; ')
alt = re.sub(r'\s+', ' ', alt)
if alt:
results.append(alt)
if results:
pod_texts.append(heading + ' ' + '|'.join(results))
ret = '. '.join(pod_texts)
if not pod_texts:
return 'no results'
ret = re.sub(r'\\(.)', r'\1', ret)
def unicode_sub(match):
return unichr(int(match.group(1), 16))
ret = re.sub(r'\\:([0-9a-z]{4})', unicode_sub, ret)
if len(ret) > 430:
ret = ret[:ret.rfind(' ', 0, 430)]
ret = re.sub(r'\W+$', '', ret) + '...'
if not ret:
return 'no result'
return ret