Refs #18239 -- Removed an obsolete workaround for bugs in HTMLParser.

django/utils/html_parser.py

@@ -1,13 +1,6 @@
-import re
-import sys
-
 from django.utils import six
 from django.utils.six.moves import html_parser as _html_parser
 
-current_version = sys.version_info
-
-use_workaround = current_version < (2, 7, 3)
-
 try:
     HTMLParseError = _html_parser.HTMLParseError
 except AttributeError:
@@ -15,8 +8,7 @@ except AttributeError:
     class HTMLParseError(Exception):
         pass
 
-if not use_workaround:
-    if six.PY3:
+if six.PY3:
     class HTMLParser(_html_parser.HTMLParser):
         """Explicitly set convert_charrefs to be False.
 
@@ -26,103 +18,5 @@ if not use_workaround:
         """
         def __init__(self, convert_charrefs=False, **kwargs):
             _html_parser.HTMLParser.__init__(self, convert_charrefs=convert_charrefs, **kwargs)
-    else:
-        HTMLParser = _html_parser.HTMLParser
 else:
-    tagfind = re.compile('([a-zA-Z][-.a-zA-Z0-9:_]*)(?:\s|/(?!>))*')
-
-    class HTMLParser(_html_parser.HTMLParser):
-        """
-        Patched version of stdlib's HTMLParser with patch from:
-        http://bugs.python.org/issue670664
-        """
-        def __init__(self):
-            _html_parser.HTMLParser.__init__(self)
-            self.cdata_tag = None
-
-        def set_cdata_mode(self, tag):
-            try:
-                self.interesting = _html_parser.interesting_cdata
-            except AttributeError:
-                self.interesting = re.compile(r'</\s*%s\s*>' % tag.lower(), re.I)
-            self.cdata_tag = tag.lower()
-
-        def clear_cdata_mode(self):
-            self.interesting = _html_parser.interesting_normal
-            self.cdata_tag = None
-
-        # Internal -- handle starttag, return end or -1 if not terminated
-        def parse_starttag(self, i):
-            self.__starttag_text = None
-            endpos = self.check_for_whole_start_tag(i)
-            if endpos < 0:
-                return endpos
-            rawdata = self.rawdata
-            self.__starttag_text = rawdata[i:endpos]
-
-            # Now parse the data between i+1 and j into a tag and attrs
-            attrs = []
-            match = tagfind.match(rawdata, i + 1)
-            assert match, 'unexpected call to parse_starttag()'
-            k = match.end()
-            self.lasttag = tag = match.group(1).lower()
-
-            while k < endpos:
-                m = _html_parser.attrfind.match(rawdata, k)
-                if not m:
-                    break
-                attrname, rest, attrvalue = m.group(1, 2, 3)
-                if not rest:
-                    attrvalue = None
-                elif (attrvalue[:1] == '\'' == attrvalue[-1:] or
-                        attrvalue[:1] == '"' == attrvalue[-1:]):
-                    attrvalue = attrvalue[1:-1]
-                if attrvalue:
-                    attrvalue = self.unescape(attrvalue)
-                attrs.append((attrname.lower(), attrvalue))
-                k = m.end()
-
-            end = rawdata[k:endpos].strip()
-            if end not in (">", "/>"):
-                lineno, offset = self.getpos()
-                if "\n" in self.__starttag_text:
-                    lineno = lineno + self.__starttag_text.count("\n")
-                    offset = (len(self.__starttag_text)
-                             - self.__starttag_text.rfind("\n"))
-                else:
-                    offset = offset + len(self.__starttag_text)
-                self.error("junk characters in start tag: %r"
-                           % (rawdata[k:endpos][:20],))
-            if end.endswith('/>'):
-                # XHTML-style empty tag: <span attr="value" />
-                self.handle_startendtag(tag, attrs)
-            else:
-                self.handle_starttag(tag, attrs)
-                if tag in self.CDATA_CONTENT_ELEMENTS:
-                    self.set_cdata_mode(tag)  # <--------------------------- Changed
-            return endpos
-
-        # Internal -- parse endtag, return end or -1 if incomplete
-        def parse_endtag(self, i):
-            rawdata = self.rawdata
-            assert rawdata[i:i + 2] == "</", "unexpected call to parse_endtag"
-            match = _html_parser.endendtag.search(rawdata, i + 1)  # >
-            if not match:
-                return -1
-            j = match.end()
-            match = _html_parser.endtagfind.match(rawdata, i)  # </ + tag + >
-            if not match:
-                if self.cdata_tag is not None:  # *** add ***
-                    self.handle_data(rawdata[i:j])  # *** add ***
-                    return j  # *** add ***
-                self.error("bad end tag: %r" % (rawdata[i:j],))
-            # --- changed start ---------------------------------------------------
-            tag = match.group(1).strip()
-            if self.cdata_tag is not None:
-                if tag.lower() != self.cdata_tag:
-                    self.handle_data(rawdata[i:j])
-                    return j
-            # --- changed end -----------------------------------------------------
-            self.handle_endtag(tag.lower())
-            self.clear_cdata_mode()
-            return j
+    HTMLParser = _html_parser.HTMLParser