h/plugins/wolframalpha.py

51 lines
1.2 KiB
Python

import re
from util import hook, http
@hook.api_key('wolframalpha')
@hook.command('wa')
@hook.command
def wolframalpha(inp, api_key=None):
".wa/.wolframalpha <query> -- computes <query> using Wolfram Alpha"
url = 'http://api.wolframalpha.com/v2/query?format=plaintext'
result = http.get_xml(url, input=inp, appid=api_key)
pod_texts = []
for pod in result.xpath("//pod"):
title = pod.attrib['title']
if pod.attrib['id'] == 'Input':
continue
results = []
for subpod in pod.xpath('subpod/plaintext/text()'):
subpod = subpod.strip().replace('\\n', '; ')
subpod = re.sub(r'\s+', ' ', subpod)
if subpod:
results.append(subpod)
if results:
pod_texts.append(title + ': ' + '|'.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 results'
return ret