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authorJohn MacFarlane <fiddlosopher@gmail.com>2014-11-25 16:13:28 -0800
committerJohn MacFarlane <fiddlosopher@gmail.com>2014-11-25 16:13:28 -0800
commit31bca912bce64b0a1fbfeaa8f888e8f0281c12d6 (patch)
tree5de82127ab69e24f00e192ad5298033f8322beb5 /html2ast.py
parent7bc7581b22fbb2f77529a5ac9bca57ed1916bd32 (diff)
Added skeleton of html2ast.py.
This is to test code for converting HTML into the representation of the AST returned by cmark_render_ast. Eventually this will be used instead of HTML in the tests.
Diffstat (limited to 'html2ast.py')
-rw-r--r--html2ast.py84
1 files changed, 84 insertions, 0 deletions
diff --git a/html2ast.py b/html2ast.py
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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import sys
+from HTMLParser import HTMLParser, HTMLParseError
+import re
+from htmlentitydefs import name2codepoint
+import cgi
+
+class MyHTMLParser(HTMLParser):
+ def __init__(self):
+ HTMLParser.__init__(self)
+ self.in_pre = False
+ self.output = u""
+ def handle_data(self, data):
+ self.output += data
+ def handle_endtag(self, tag):
+ if tag == "pre":
+ self.in_pre = False
+ def handle_starttag(self, tag, attrs):
+ if tag == "pre":
+ self.in_pre = True
+ def handle_startendtag(self, tag, attrs):
+ self.output += ""
+ def handle_comment(self, data):
+ self.output += '<!--' + data + '-->'
+ def handle_decl(self, data):
+ self.output += '<!' + data + '>'
+ def unknown_decl(self, data):
+ self.output += '<!' + data + '>'
+ def handle_pi(self,data):
+ self.output += '<?' + data + '>'
+ def handle_entityref(self, name):
+ try:
+ c = unichr(name2codepoint[name])
+ except KeyError:
+ c = None
+ self.output_char(c)
+ def handle_charref(self, name):
+ try:
+ if name.startswith("x"):
+ c = unichr(int(name[1:], 16))
+ else:
+ c = unichr(int(name))
+ except ValueError:
+ c = None
+ self.output_char(c)
+ # Helpers.
+ def output_char(self, c):
+ if c == u'\n':
+ self.output += "\\n"
+ elif c == u'"':
+ self.output += "\\\""
+ elif c == u'\\':
+ self.output += "\\\\"
+ else:
+ self.output += c
+
+ def is_block_tag(self,tag):
+ return (tag in ['article', 'header', 'aside', 'hgroup', 'blockquote',
+ 'hr', 'iframe', 'body', 'li', 'map', 'button', 'object', 'canvas',
+ 'ol', 'caption', 'output', 'col', 'p', 'colgroup', 'pre', 'dd',
+ 'progress', 'div', 'section', 'dl', 'table', 'td', 'dt',
+ 'tbody', 'embed', 'textarea', 'fieldset', 'tfoot', 'figcaption',
+ 'th', 'figure', 'thead', 'footer', 'tr', 'form', 'ul',
+ 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'video', 'script', 'style'])
+
+def html2ast(html):
+ html_chunk_re = re.compile("(\<!\[CDATA\[.*?\]\]\>|\<[^>]*\>|[^<]+)")
+ parser = MyHTMLParser()
+ # We work around HTMLParser's limitations parsing CDATA
+ # by breaking the input into chunks and passing CDATA chunks
+ # through verbatim.
+ for chunk in re.finditer(html_chunk_re, html):
+ if chunk.group(0)[:8] == "<![CDATA":
+ parser.output += chunk.group(0)
+ else:
+ parser.feed(chunk.group(0).decode(encoding='UTF-8'))
+ parser.close()
+ return parser.output
+
+
+if __name__ == "__main__":
+ print(html2ast(sys.stdin.read()))