morss/feedify.py

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#!/usr/bin/env python
from ConfigParser import ConfigParser
from fnmatch import fnmatch
import feeds
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import morss
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import re
import urllib2
import lxml.html
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import json
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import urlparse
def toclass(query):
pattern = r'\[class=([^\]]+)\]'
repl = r'[@class and contains(concat(" ", normalize-space(@class), " "), " \1 ")]'
return re.sub(pattern, repl, query)
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def getRule(link):
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config = ConfigParser()
config.read('feedify.ini')
for section in config.sections():
values = dict(config.items(section))
values['path'] = values['path'].split('\n')[1:]
for path in values['path']:
if fnmatch(link, path):
return values
return False
def supported(link):
return getRule(link) is not False
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def formatString(string, getter, error=False):
out = ""
char = string[0]
follow = string[1:]
if char == '"':
match = follow.partition('"')
out = match[0]
if len(match) >= 2:
next = match[2]
else:
next = None
elif char == '{':
match = follow.partition('}')
try:
test = formatString(match[0], getter, True)
except ValueError, KeyError:
pass
else:
out = test
next = match[2]
elif char == ' ':
next = follow
elif re.search(r'^([^{}<>" ]+)(?:<"([^>]+)">)?(.*)$', string):
match = re.search(r'^([^{}<>" ]+)(?:<"([^>]+)">)?(.*)$', string).groups()
rawValue = getter(match[0])
print repr(rawValue)
if not isinstance(rawValue, basestring):
if match[1] is not None:
out = match[1].join(rawValue)
else:
out = ''.join(rawValue)
if not out and error:
raise ValueError
next = match[2]
else:
raise ValueError('bogus string')
if next is not None and len(next):
return out + formatString(next, getter, error)
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else:
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return out
class Builder(object):
def __init__(self, link, data=None):
self.link = link
if data is None:
data = urllib2.urlopen(link).read()
self.data = data
self.rule = getRule(link)
if self.rule['mode'] == 'xpath':
self.data = morss.decodeHTML(self.data)
self.doc = lxml.html.fromstring(self.data)
elif self.rule['mode'] == 'json':
self.doc = json.loads(data)
self.feed = feeds.FeedParserAtom()
def raw(self, html, expr):
if self.rule['mode'] == 'xpath':
print 1, toclass(expr)
return html.xpath(toclass(expr))
elif self.rule['mode'] == 'json':
a = [html]
b = []
for x in expr.strip(".").split("."):
match = re.search(r'^([^\[]+)(?:\[([0-9]+)\])?$', x).groups()
for elem in a:
if isinstance(elem, dict):
kids = elem.get(match[0])
if kids is None:
pass
elif isinstance(kids, list):
[b.append(i) for i in kids]
elif isinstance(kids, basestring):
b.append(kids.replace('\n', '<br/>'))
else:
b.append(kids)
if match[1] is None:
a = b
else:
if len(b)-1 >= int(match[1]):
a = [b[int(match[1])]]
else:
a = []
b = []
return a
def strings(self, html, expr):
if self.rule['mode'] == 'xpath':
out = []
for match in self.raw(html, expr):
if isinstance(match, basestring):
out.append(match)
elif isinstance(match, lxml.html.HtmlElement):
out.append(lxml.html.tostring(match))
return out
elif self.rule['mode'] == 'json':
return self.raw(html, expr)
def string(self, html, expr):
getter = lambda x: self.strings(html, x)
return formatString(self.rule[expr], getter)
def build(self):
if 'title' in self.rule:
self.feed.title = self.string(self.doc, 'title')
if 'items' in self.rule:
matches = self.raw(self.doc, self.rule['items'])
if matches and len(matches):
for item in matches:
feedItem = {}
if 'item_title' in self.rule:
feedItem['title'] = self.string(item, 'item_title')
if 'item_link' in self.rule:
url = self.string(item, 'item_link')
url = urlparse.urljoin(self.link, url)
feedItem['link'] = url
if 'item_desc' in self.rule:
feedItem['desc'] = self.string(item, 'item_desc')
if 'item_content' in self.rule:
feedItem['content'] = self.string(item, 'item_content')
if 'item_time' in self.rule:
feedItem['updated'] = self.string(item, 'item_time')
self.feed.items.append(feedItem)