diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/HTMLParser.py | 58 |
1 files changed, 31 insertions, 27 deletions
diff --git a/Lib/HTMLParser.py b/Lib/HTMLParser.py index 339c132..39a5d82 100644 --- a/Lib/HTMLParser.py +++ b/Lib/HTMLParser.py @@ -1,4 +1,4 @@ -"""A parser for HTML.""" +"""A parser for HTML and XHTML.""" # This file is based on sgmllib.py, but the API is slightly different. @@ -18,7 +18,7 @@ interesting_cdata = re.compile(r'<(/|\Z)') incomplete = re.compile('&([a-zA-Z][-.a-zA-Z0-9]*|#[0-9]*)?') entityref = re.compile('&([a-zA-Z][-.a-zA-Z0-9]*)[^a-zA-Z0-9]') -charref = re.compile('&#([0-9]+)[^0-9]') +charref = re.compile('&#(?:[0-9]+|[xX][0-9a-fA-F]+)[^0-9a-fA-F]') starttagopen = re.compile('<[a-zA-Z]') piopen = re.compile(r'<\?') @@ -73,32 +73,35 @@ class HTMLParseError(Exception): return result -# HTML parser class -- find tags and call handler functions. -# Usage: -# -# p = HTMLParser(); p.feed(data); ...; p.close() - -# Start tags are handled by calling self.handle_starttag() or -# self.handle_startendtag(); end tags by self.handle_endtag(). The -# data between tags is passed from the parser to the derived class by -# calling self.handle_data() with the data as argument (the data may -# be split up in arbitrary chunks). Entity references are passed by -# calling self.handle_entityref() with the entity reference as the -# argument. Numeric character references are passed to -# self.handle_charref() with the string containing the reference as -# the argument. - class HTMLParser: + """Find tags and other markup and call handler functions. + + Usage: + p = HTMLParser() + p.feed(data) + ... + p.close() + + Start tags are handled by calling self.handle_starttag() or + self.handle_startendtag(); end tags by self.handle_endtag(). The + data between tags is passed from the parser to the derived class + by calling self.handle_data() with the data as argument (the data + may be split up in arbitrary chunks). Entity references are + passed by calling self.handle_entityref() with the entity + reference as the argument. Numeric character references are + passed to self.handle_charref() with the string containing the + reference as the argument. + """ CDATA_CONTENT_ELEMENTS = ("script", "style") - # Interface -- initialize and reset this instance def __init__(self): + """Initialize and reset this instance.""" self.reset() - # Interface -- reset this instance. Loses all unprocessed data def reset(self): + """Reset this instance. Loses all unprocessed data.""" self.rawdata = '' self.stack = [] self.lasttag = '???' @@ -106,16 +109,17 @@ class HTMLParser: self.offset = 0 self.interesting = interesting_normal - # Interface -- feed some data to the parser. Call this as - # often as you want, with as little or as much text as you - # want (may include '\n'). (This just saves the text, all the - # processing is done by goahead().) def feed(self, data): + """Feed data to the parser. + + Call this as often as you want, with as little or as much text + as you want (may include '\n'). + """ self.rawdata = self.rawdata + data self.goahead(0) - # Interface -- handle the remaining data def close(self): + """Handle any buffered data.""" self.goahead(1) # Internal -- update line number and offset. This should be @@ -135,14 +139,14 @@ class HTMLParser: self.offset = self.offset + j-i return j - # Interface -- return current line number and offset. def getpos(self): + """Return current line number and offset.""" return self.lineno, self.offset __starttag_text = None - # Interface -- return full source of start tag: "<...>" def get_starttag_text(self): + """Return full source of start tag: '<...>'.""" return self.__starttag_text def set_cdata_mode(self): @@ -195,7 +199,7 @@ class HTMLParser: elif rawdata[i] == '&': match = charref.match(rawdata, i) if match: - name = match.group(1) + name = match.group()[2:-1] self.handle_charref(name) k = match.end() if rawdata[k-1] != ';': |