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DDG: abstract out a search_core(), as the LastFM plugin will use this later

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From: 47bb74d7d9
This commit is contained in:
James Lu 2017-01-20 18:39:42 -08:00
parent 44b626df64
commit 30615a7284
1 changed files with 36 additions and 20 deletions
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56
plugin.py
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@ -1,5 +1,5 @@
###
# Copyright (c) 2014-2015, James Lu
# Copyright (c) 2014-2017, James Lu <james@overdrivenetworks.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
@ -71,19 +71,25 @@ class DDG(callbacks.Plugin):
# Remove "sponsored link" results
return [td for td in soup.find_all('td') if 'result-sponsored' not in str(td.parent.get('class'))]
def search(self, irc, msg, args, text):
"""<text>
def search_core(self, text, channel_context=None, max_results=None, show_snippet=None):
"""
Core results fetcher for the DDG plugin. Other plugins can call this as well via
irc.getCallback('DDG').search_core(...)
"""
if show_snippet is None:
# Note: don't use ternary there, or the registry value will override any False
# settings given to the function directly.
show_snippet = self.registryValue("showSnippet", channel_context)
maxr = max_results or self.registryValue("maxResults", channel_context)
Searches for <text> on DuckDuckGo's web search."""
replies = []
channel = msg.args[0]
# In a nutshell, the 'lite' site puts all of its usable content
# into tables. This means that headings, result snippets and
# everything else are all using the same tag (<td>), which makes
# parsing somewhat difficult.
# everything else are all using the same tag (<td>), which still makes
# parsing somewhat tricky.
results = []
for t in self._ddgurl(text):
maxr = self.registryValue("maxResults", channel)
# Hence we run a for loop to extract meaningful content:
# We run a for loop here to extract meaningful content:
for n in range(1, maxr):
res = ''
# Each valid result has a preceding heading in the format
@ -95,7 +101,8 @@ class DDG(callbacks.Plugin):
try:
snippet = ''
# 1) Get a result snippet.
if self.registryValue("showsnippet", channel):
if self.registryValue("showsnippet", channel_context):
snippet = res.parent.next_sibling.next_sibling.\
find_all("td")[-1]
snippet = snippet.text.strip()
@ -111,22 +118,31 @@ class DDG(callbacks.Plugin):
linkparse = utils.web.urlparse(link)
try:
link = parse_qs(linkparse.query)['uddg'][0]
except (IndexError, KeyError):
except KeyError:
# No link was given here, skip.
continue
except IndexError:
self.log.exception("DDG: failed to expand redirected result URL %s", origlink)
continue
else:
self.log.debug("DDG: expanded result URL from %s to %s", origlink, link)
s = format("%s - %s %u", ircutils.bold(title), snippet,
link)
replies.append(s)
s = format("%s - %s %u", ircutils.bold(title), snippet, link)
results.append(s)
except AttributeError:
continue
return results
@wrap(['text'])
def search(self, irc, msg, args, text):
"""<text>
Searches for <text> on DuckDuckGo's web search."""
results = self.search_core(text, msg.args[0])
if not results:
irc.error("No results found.")
else:
if not replies:
irc.error("No results found.")
else:
irc.reply(', '.join(replies))
search = wrap(search, ['text'])
irc.reply(', '.join(results))
@wrap(['text'])
def zeroclick(self, irc, msg, args, text):