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#
# htmlStripper.py
#
# Sample code for stripping HTML markup tags and scripts from
# HTML source files.
#
# Copyright (c) 2006, 2016, Paul McGuire
#
from contextlib import closing
import urllib.request, urllib.parse, urllib.error
from pyparsing import (makeHTMLTags, SkipTo, commonHTMLEntity, replaceHTMLEntity,
htmlComment, anyOpenTag, anyCloseTag, LineEnd, OneOrMore, replaceWith)
scriptOpen,scriptClose = makeHTMLTags("script")
scriptBody = scriptOpen + SkipTo(scriptClose) + scriptClose
commonHTMLEntity.setParseAction(replaceHTMLEntity)
# get some HTML
targetURL = "http://wiki.python.org/moin/PythonDecoratorLibrary"
with closing(urllib.request.urlopen( targetURL )) as targetPage:
targetHTML = targetPage.read().decode("UTF-8")
# first pass, strip out tags and translate entities
firstPass = (htmlComment | scriptBody | commonHTMLEntity |
anyOpenTag | anyCloseTag ).suppress().transformString(targetHTML)
# first pass leaves many blank lines, collapse these down
repeatedNewlines = LineEnd() + OneOrMore(LineEnd())
repeatedNewlines.setParseAction(replaceWith("\n\n"))
secondPass = repeatedNewlines.transformString(firstPass)
print(secondPass)
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