380 lines
14 KiB
Python
380 lines
14 KiB
Python
# (C) 2021 lifegpc
|
|
# This file is part of rssbot.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as published
|
|
# by the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Affero General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
from xml.dom import minidom
|
|
from html.parser import HTMLParser
|
|
from html import escape, unescape
|
|
import sys
|
|
import requests
|
|
from traceback import format_exc
|
|
from urllib.parse import urljoin
|
|
|
|
|
|
class HTMLContent:
|
|
def __init__(self):
|
|
self.__list = []
|
|
|
|
def add(self, s: str, needescaped: bool = False):
|
|
self.__list.append((s, needescaped))
|
|
|
|
def export(self) -> str:
|
|
r = ''
|
|
for s, e in self.__list:
|
|
if e:
|
|
r = r + escape(s)
|
|
else:
|
|
r = r + s
|
|
return r
|
|
|
|
|
|
class HTMLSimpleParser(HTMLParser):
|
|
def __init__(self, baseUrl: str = None):
|
|
self.data = ''
|
|
self.tagName = []
|
|
self.tagContent = []
|
|
self.tagAttrs = []
|
|
self.imgList = []
|
|
self.videoList = []
|
|
self.baseUrl = ''
|
|
if baseUrl is not None:
|
|
self.baseUrl = baseUrl
|
|
HTMLParser.__init__(self)
|
|
|
|
def handle_startendtag(self, tag, attrs):
|
|
if tag == 'br':
|
|
if len(self.tagName) == 0:
|
|
self.data = self.data + '\n'
|
|
else:
|
|
self.tagContent[-1].add('\n')
|
|
|
|
def handle_starttag(self, tag, attrs):
|
|
if tag == 'br':
|
|
if len(self.tagName) == 0:
|
|
self.data = self.data + '\n'
|
|
else:
|
|
self.tagContent[-1].add('\n')
|
|
return
|
|
elif tag == 'img':
|
|
for key, value in attrs:
|
|
if key == 'src':
|
|
self.imgList.append(urljoin(self.baseUrl, value))
|
|
break
|
|
return
|
|
elif tag == 'video':
|
|
p = {}
|
|
for key, value in attrs:
|
|
if key == 'src':
|
|
p['src'] = urljoin(self.baseUrl, value)
|
|
if key == 'poster':
|
|
p['poster'] = urljoin(self.baseUrl, value)
|
|
if 'src' in p:
|
|
self.videoList.append(p)
|
|
return
|
|
self.tagName.append(tag)
|
|
self.tagContent.append(HTMLContent())
|
|
self.tagAttrs.append('')
|
|
if tag == 'a':
|
|
for key, value in attrs:
|
|
if key == 'href':
|
|
self.tagAttrs[-1] = f'{self.tagAttrs[-1]} href="{urljoin(self.baseUrl, value)}"'
|
|
|
|
def handle_data(self, data):
|
|
if len(self.tagName) > 0:
|
|
self.tagContent[-1].add(data, True)
|
|
else:
|
|
self.data = self.data + escape(data)
|
|
|
|
def handle_endtag(self, tag):
|
|
if tag in ['a', 'b', 'i', 'u', 's', 'strong', 'em', 'ins', 'strike', 'del', 'code', 'pre']:
|
|
if len(self.tagName) == 1:
|
|
self.data = f"{self.data}<{tag}{self.tagAttrs[-1]}>{self.tagContent[-1].export()}</{tag}>"
|
|
elif len(self.tagName) > 1:
|
|
self.tagContent[-2].add(
|
|
f"<{tag}{self.tagAttrs[-1]}>{self.tagContent[-1].export()}</{tag}>")
|
|
elif tag not in ['img', 'video', 'br']:
|
|
if len(self.tagName) == 1:
|
|
self.data = f"{self.data}{self.tagContent[-1].export()}"
|
|
elif len(self.tagName) > 1:
|
|
self.tagContent[-2].add(f"{self.tagContent[-1].export()}")
|
|
else:
|
|
return
|
|
self.tagName = self.tagName[:-1]
|
|
self.tagContent = self.tagContent[:-1]
|
|
self.tagAttrs = self.tagAttrs[:-1]
|
|
|
|
|
|
class RSSParser:
|
|
def __init__(self):
|
|
pass
|
|
|
|
def __checkasratom(self):
|
|
self._root = self.xmldoc.documentElement
|
|
if self._root.nodeName != 'feed':
|
|
return False
|
|
m = {}
|
|
itemList = []
|
|
for i in self._root.childNodes:
|
|
if i.nodeName == 'entry':
|
|
itemList.append(self.__dealItemAtom(i))
|
|
elif i.nodeName == 'link':
|
|
typ = 'text/html'
|
|
if 'type' in i.attributes:
|
|
typ = i.attributes['type'].nodeValue
|
|
if 'href' in i.attributes and typ == 'text/html':
|
|
m[i.nodeName] = i.attributes['href'].nodeValue
|
|
elif i.nodeName == 'author':
|
|
for k in i.childNodes:
|
|
if k.nodeName == 'name':
|
|
m['author'] = k.nodeValue
|
|
break
|
|
elif len(k.childNodes) == 1 and k.firstChild.nodeName == '#cdata-section':
|
|
m['author'] = k.firstChild.nodeValue
|
|
break
|
|
else:
|
|
if len(i.childNodes) == 0:
|
|
m[i.nodeName] = i.nodeValue
|
|
elif len(i.childNodes) == 1 and i.firstChild.nodeName == '#cdata-section':
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = ''
|
|
for k in i.childNodes:
|
|
m[i.nodeName] = m[i.nodeName] + k.toxml()
|
|
if 'title' not in m or m['title'] is None or m['title'] == '':
|
|
return False
|
|
self.m = m
|
|
self.title = m['title']
|
|
self.ttl = None
|
|
self.itemList = itemList
|
|
self._type = 'atom'
|
|
return True
|
|
|
|
def __checkasrss2(self):
|
|
self._root = self.xmldoc.documentElement
|
|
if self._root.localName != 'rss' or len(self._root.childNodes) != 1:
|
|
return False
|
|
self._root2 = self._root.childNodes[0]
|
|
if self._root2.localName != 'channel':
|
|
return False
|
|
m = {}
|
|
itemList = []
|
|
for i in self._root2.childNodes:
|
|
if i.nodeName == 'item':
|
|
itemList.append(self.__dealItem(i))
|
|
elif i.nodeName == 'atom:link':
|
|
if 'href' in i.attributes:
|
|
m[i.nodeName] = i.attributes['href'].nodeValue
|
|
else:
|
|
if len(i.childNodes) == 0:
|
|
m[i.nodeName] = i.nodeValue
|
|
elif len(i.childNodes) == 1 and i.firstChild.nodeName == '#cdata-section':
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = ''
|
|
for k in i.childNodes:
|
|
m[i.nodeName] = m[i.nodeName] + k.toxml()
|
|
if 'title' not in m or m['title'] is None or m['title'] == '':
|
|
return False
|
|
self.m = m
|
|
self.title = m['title']
|
|
self.ttl = None
|
|
if 'ttl' in m and m['ttl'] is not None and m['ttl'].isnumeric():
|
|
self.ttl = int(m['ttl'])
|
|
self.itemList = itemList
|
|
self._type = 'rss2.0'
|
|
return True
|
|
|
|
def __dealItem(self, node):
|
|
m = {}
|
|
for i in node.childNodes:
|
|
if i.nodeName == 'link':
|
|
if len(i.childNodes) == 0:
|
|
m[i.nodeName] = i.nodeValue
|
|
else:
|
|
m[i.nodeName] = ''
|
|
for k in i.childNodes:
|
|
m[i.nodeName] = m[i.nodeName] + k.toxml()
|
|
break
|
|
for i in node.childNodes:
|
|
if i.nodeName == 'link':
|
|
continue
|
|
elif len(i.childNodes) == 0:
|
|
m[i.nodeName] = i.nodeValue
|
|
elif len(i.childNodes) == 1 and i.firstChild.nodeName == '#cdata-section':
|
|
p = HTMLSimpleParser()
|
|
if 'link' in m and m['link'] is not None:
|
|
p.baseUrl = m['link']
|
|
p.feed(i.firstChild.nodeValue)
|
|
if p.data == '' and i.firstChild.nodeValue.find('<') == -1:
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = p.data
|
|
if i.nodeName in ['description', 'content:encoded']:
|
|
if i.nodeName == 'content:encoded':
|
|
m['description'] = m['content:encoded']
|
|
del m['content:encoded']
|
|
m['imgList'] = p.imgList
|
|
m['videoList'] = p.videoList
|
|
else:
|
|
m[i.nodeName] = ''
|
|
for k in i.childNodes:
|
|
m[i.nodeName] = m[i.nodeName] + k.toxml()
|
|
return m
|
|
|
|
def __dealItemAtom(self, node):
|
|
m = {}
|
|
for i in node.childNodes:
|
|
if i.nodeName == 'link':
|
|
if 'href' in i.attributes:
|
|
m[i.nodeName] = i.attributes['href'].nodeValue
|
|
for i in node.childNodes:
|
|
if i.nodeName == 'author':
|
|
for k in i.childNodes:
|
|
if k.nodeName == 'name':
|
|
if k.nodeValue is not None:
|
|
m['author'] = k.nodeValue
|
|
break
|
|
elif len(k.childNodes) == 1 and k.firstChild.nodeName == '#cdata-section':
|
|
m['author'] = k.firstChild.nodeValue
|
|
break
|
|
elif i.nodeName == 'link':
|
|
continue
|
|
elif i.nodeName in ['title', 'content', 'summary']:
|
|
typ = 'text'
|
|
if 'type' in i.attributes:
|
|
if i.attributes['type'].nodeValue in ['text', 'html', 'xhtml']:
|
|
typ = i.attributes['type'].nodeValue
|
|
if len(i.childNodes) == 1 and i.firstChild.nodeName == '#cdata-section':
|
|
p = HTMLSimpleParser()
|
|
if 'link' in m and m['link'] is not None:
|
|
p.baseUrl = m['link']
|
|
p.feed(i.firstChild.nodeValue)
|
|
if p.data == '' and i.firstChild.nodeValue.find('<') == -1:
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = p.data
|
|
if i.nodeName in ['content', 'summary']:
|
|
m['imgList'] = p.imgList
|
|
m['videoList'] = p.videoList
|
|
m['description'] = m[i.nodeName]
|
|
del m[i.nodeName]
|
|
elif i.nodeValue is None and len(i.childNodes) == 0:
|
|
continue
|
|
elif typ == 'text':
|
|
s = ''
|
|
if i.nodeValue is not None:
|
|
s = i.nodeValue
|
|
else:
|
|
for k in i.childNodes:
|
|
s = s + k.toxml()
|
|
m[i.nodeName] = s
|
|
elif typ == 'html':
|
|
s = ''
|
|
if i.nodeValue is not None:
|
|
s = i.nodeValue
|
|
else:
|
|
for k in i.childNodes:
|
|
s = s + k.toxml()
|
|
p = HTMLSimpleParser()
|
|
if 'link' in m and m['link'] is not None:
|
|
p.baseUrl = m['link']
|
|
p.feed(unescape(s))
|
|
if p.data == '' and i.firstChild.nodeValue.find('<') == -1:
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = p.data
|
|
if i.nodeName in ['content', 'summary']:
|
|
m['imgList'] = p.imgList
|
|
m['videoList'] = p.videoList
|
|
m['description'] = m[i.nodeName]
|
|
del m[i.nodeName]
|
|
elif typ == 'xhtml':
|
|
p = HTMLSimpleParser()
|
|
if 'link' in m and m['link'] is not None:
|
|
p.baseUrl = m['link']
|
|
p.feed(i.firstChild.toxml())
|
|
if p.data == '' and i.firstChild.nodeValue.find('<') == -1:
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = p.data
|
|
if i.nodeName in ['content', 'summary']:
|
|
m['imgList'] = p.imgList
|
|
m['videoList'] = p.videoList
|
|
m['description'] = m[i.nodeName]
|
|
del m[i.nodeName]
|
|
elif len(i.childNodes) == 0:
|
|
m[i.nodeName] = i.nodeValue
|
|
elif len(i.childNodes) == 1 and i.firstChild.nodeName == '#cdata-section':
|
|
p = HTMLSimpleParser()
|
|
if 'link' in m and m['link'] is not None:
|
|
p.baseUrl = m['link']
|
|
p.feed(i.firstChild.nodeValue)
|
|
if p.data == '' and i.firstChild.nodeValue.find('<') == -1:
|
|
m[i.nodeName] = i.firstChild.nodeValue
|
|
else:
|
|
m[i.nodeName] = p.data
|
|
else:
|
|
m[i.nodeName] = ''
|
|
for k in i.childNodes:
|
|
m[i.nodeName] = m[i.nodeName] + k.toxml()
|
|
return m
|
|
|
|
def check(self):
|
|
for f in [self.__checkasrss2, self.__checkasratom]:
|
|
try:
|
|
if f():
|
|
self.m['_type'] = self._type
|
|
return True
|
|
except:
|
|
print(format_exc())
|
|
pass
|
|
return False
|
|
|
|
def normalize(self):
|
|
self.removeblank(self.xmldoc.documentElement)
|
|
self.xmldoc.normalize()
|
|
|
|
def parse(self, fn: str):
|
|
try:
|
|
if fn.find('://') > -1:
|
|
re = requests.get(fn)
|
|
re.encoding = 'utf8'
|
|
if re.status_code == 200:
|
|
self.xmldoc = minidom.parseString(re.text)
|
|
else:
|
|
self.xmldoc = minidom.parse(fn)
|
|
self.normalize()
|
|
return True
|
|
except:
|
|
return False
|
|
|
|
def removeblank(self, node):
|
|
for i in node.childNodes:
|
|
if i.nodeType == minidom.Node.TEXT_NODE:
|
|
if i.nodeValue:
|
|
i.nodeValue = i.nodeValue.strip()
|
|
elif i.nodeType == minidom.Node.ELEMENT_NODE:
|
|
self.removeblank(i)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
if len(sys.argv) > 1:
|
|
fn = sys.argv[1]
|
|
p = RSSParser()
|
|
p.parse(fn)
|
|
if p.check():
|
|
print(p._type)
|
|
else:
|
|
print('解析失败')
|