d4cbcfd5d5
* INCR-229 ran modernize on common/lib/xmodule/xmodule/[a-g]*.py except for graders.py * fix a couple xss-commit-linter issues
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
"""
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Annotations Tool Mixin
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This file contains global variables and functions used in the various Annotation Tools.
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"""
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from __future__ import absolute_import
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from os.path import basename, splitext
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from lxml import etree
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from six.moves.html_parser import HTMLParser
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from six.moves.urllib.parse import urlparse
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def get_instructions(xmltree):
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""" Removes <instructions> from the xmltree and returns them as a string, otherwise None. """
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instructions = xmltree.find('instructions')
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if instructions is not None:
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instructions.tag = 'div'
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xmltree.remove(instructions)
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return etree.tostring(instructions, encoding='unicode')
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return None
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def get_extension(srcurl):
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"""get the extension of a given url """
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if 'youtu' in srcurl:
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return 'video/youtube'
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else:
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disassembled = urlparse(srcurl)
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file_ext = splitext(basename(disassembled.path))[1]
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return 'video/' + file_ext.replace('.', '')
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class MLStripper(HTMLParser):
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"helper function for html_to_text below"
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def __init__(self):
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HTMLParser.__init__(self)
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self.reset()
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self.fed = []
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def handle_data(self, data):
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"""takes the data in separate chunks"""
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self.fed.append(data)
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def handle_entityref(self, name):
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"""appends the reference to the body"""
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self.fed.append('&%s;' % name)
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def get_data(self):
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"""joins together the seperate chunks into one cohesive string"""
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return ''.join(self.fed)
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def html_to_text(html):
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"strips the html tags off of the text to return plaintext"
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htmlstripper = MLStripper()
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htmlstripper.feed(html)
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return htmlstripper.get_data()
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