From 7ff5d7f7c795bfb97615f57b20bf81680fed2166 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 4 Aug 1995 04:23:30 +0000
Subject: [PATCH] major rewrite using different formatting paradigm

---
 Lib/htmllib.py | 958 ++++++++++++++++++-------------------------------
 1 file changed, 351 insertions(+), 607 deletions(-)

diff --git a/Lib/htmllib.py b/Lib/htmllib.py
index 10ca81063c7..4af446a57d3 100644
--- a/Lib/htmllib.py
+++ b/Lib/htmllib.py
@@ -1,633 +1,377 @@
-# A parser for HTML documents
+# New HTML class
+
+# XXX Check against HTML 2.0 spec
+
+# XXX reorder methods according to hierarchy
+# - html structure: head, body, title, isindex
+# - headers
+# - lists, items
+# - paragraph styles
+# - forms
+# - character styles
+# - images
+# - bookkeeping
+# - output generation
 
 
-# HTML: HyperText Markup Language; an SGML-like syntax used by WWW to
-# describe hypertext documents
-#
-# SGML: Standard Generalized Markup Language
-#
-# WWW: World-Wide Web; a distributed hypertext system develped at CERN
-#
-# CERN: European Particle Physics Laboratory in Geneva, Switzerland
-
-
-# This file is only concerned with parsing and formatting HTML
-# documents, not with the other (hypertext and networking) aspects of
-# the WWW project.  (It does support highlighting of anchors.)
-
-
-import os
 import sys
-import regex
+import regsub
 import string
-import sgmllib
+from sgmllib import SGMLParser
 
 
-class HTMLParser(sgmllib.SGMLParser):
-
-	# Copy base class entities and add some
-	entitydefs = {}
-	for key in sgmllib.SGMLParser.entitydefs.keys():
-		entitydefs[key] = sgmllib.SGMLParser.entitydefs[key]
-	entitydefs['bullet'] = '*'
-
-	# Provided -- handlers for tags introducing literal text
-	
-	def start_listing(self, attrs):
-		self.setliteral('listing')
-		self.literal_bgn('listing', attrs)
-
-	def end_listing(self):
-		self.literal_end('listing')
-
-	def start_xmp(self, attrs):
-		self.setliteral('xmp')
-		self.literal_bgn('xmp', attrs)
-
-	def end_xmp(self):
-		self.literal_end('xmp')
-
-	def do_plaintext(self, attrs):
-		self.setnomoretags()
-		self.literal_bgn('plaintext', attrs)
-
-	# To be overridden -- begin/end literal mode
-	def literal_bgn(self, tag, attrs): pass
-	def literal_end(self, tag): pass
-
-
-# Next level of sophistication -- collect anchors, title, nextid and isindex
-class CollectingParser(HTMLParser):
-	#
-	def __init__(self):
-		HTMLParser.__init__(self)
-		self.savetext = None
-		self.nextid = []
-		self.isindex = 0
-		self.title = ''
-		self.inanchor = 0
-		self.anchors = []
-		self.anchornames = []
-		self.anchortypes = []
-	#
-	def start_a(self, attrs):
-		self.inanchor = 0
-		href = ''
-		name = ''
-		type = ''
-		for attrname, value in attrs:
-			if attrname == 'href':
-				href = value
-			if attrname == 'name=':
-				name = value
-			if attrname == 'type=':
-				type = string.lower(value)
-		if not (href or name):
-			return
-		self.anchors.append(href)
-		self.anchornames.append(name)
-		self.anchortypes.append(type)
-		self.inanchor = len(self.anchors)
-		if not href:
-			self.inanchor = -self.inanchor
-	#
-	def end_a(self):
-		if self.inanchor > 0:
-			# Don't show anchors pointing into the current document
-			if self.anchors[self.inanchor-1][:1] <> '#':
-				self.handle_data('[' + `self.inanchor` + ']')
-		self.inanchor = 0
-	#
-	def start_html(self, attrs): pass
-	def end_html(self): pass
-	#
-	def start_head(self, attrs): pass
-	def end_head(self): pass
-	#
-	def start_body(self, attrs): pass
-	def end_body(self): pass
-	#
-	def do_nextid(self, attrs):
-		self.nextid = attrs
-	#
-	def do_isindex(self, attrs):
-		self.isindex = 1
-	#
-	def start_title(self, attrs):
-		self.savetext = ''
-	#
-	def end_title(self):
-		if self.savetext <> None:
-			self.title = self.savetext
-			self.savetext = None
-	#
-	def handle_data(self, text):
-		if self.savetext is not None:
-			self.savetext = self.savetext + text
-
-
-# Formatting parser -- takes a formatter and a style sheet as arguments
-
-# XXX The use of style sheets should change: for each tag and end tag
-# there should be a style definition, and a style definition should
-# encompass many more parameters: font, justification, indentation,
-# vspace before, vspace after, hanging tag...
-
-wordprog = regex.compile('[^ \t\n]*')
-spaceprog = regex.compile('[ \t\n]*')
-
-class FormattingParser(CollectingParser):
-
-	def __init__(self, formatter, stylesheet):
-		CollectingParser.__init__(self)
-		self.fmt = formatter
-		self.stl = stylesheet
-		self.savetext = None
-		self.compact = 0
-		self.nofill = 0
-		self.resetfont()
-		self.setindent(self.stl.stdindent)
-
-	def resetfont(self):
-		self.fontstack = []
-		self.stylestack = []
-		self.fontset = self.stl.stdfontset
-		self.style = ROMAN
-		self.passfont()
-
-	def passfont(self):
-		font = self.fontset[self.style]
-		self.fmt.setfont(font)
-
-	def pushstyle(self, style):
-		self.stylestack.append(self.style)
-		self.style = min(style, len(self.fontset)-1)
-		self.passfont()
-
-	def popstyle(self):
-		self.style = self.stylestack[-1]
-		del self.stylestack[-1]
-		self.passfont()
-
-	def pushfontset(self, fontset, style):
-		self.fontstack.append(self.fontset)
-		self.fontset = fontset
-		self.pushstyle(style)
-
-	def popfontset(self):
-		self.fontset = self.fontstack[-1]
-		del self.fontstack[-1]
-		self.popstyle()
-
-	def flush(self):
-		self.fmt.flush()
-
-	def setindent(self, n):
-		self.fmt.setleftindent(n)
-
-	def needvspace(self, n):
-		self.fmt.needvspace(n)
-
-	def close(self):
-		HTMLParser.close(self)
-		self.fmt.flush()
-
-	def handle_literal(self, text):
-		lines = string.splitfields(text, '\n')
-		for i in range(1, len(lines)):
-			lines[i] = string.expandtabs(lines[i], 8)
-		for line in lines[:-1]:
-			self.fmt.addword(line, 0)
-			self.fmt.flush()
-			self.fmt.nospace = 0
-		for line in lines[-1:]:
-			self.fmt.addword(line, 0)
-
-	def handle_data(self, text):
-		if self.savetext is not None:
-			self.savetext = self.savetext + text
-			return
-		if self.literal:
-			self.handle_literal(text)
-			return
-		i = 0
-		n = len(text)
-		while i < n:
-			j = i + wordprog.match(text, i)
-			word = text[i:j]
-			i = j + spaceprog.match(text, j)
-			self.fmt.addword(word, i-j)
-			if self.nofill and '\n' in text[j:i]:
-				self.fmt.flush()
-				self.fmt.nospace = 0
-				i = j+1
-				while text[i-1] <> '\n': i = i+1
-
-	def literal_bgn(self, tag, attrs):
-		if tag == 'plaintext':
-			self.flush()
-		else:
-			self.needvspace(1)
-		self.pushfontset(self.stl.stdfontset, FIXED)
-		self.setindent(self.stl.literalindent)
-
-	def literal_end(self, tag):
-		self.needvspace(1)
-		self.popfontset()
-		self.setindent(self.stl.stdindent)
-
-	def start_title(self, attrs):
-		self.flush()
-		self.savetext = ''
-	# NB end_title is unchanged
-
-	def do_p(self, attrs):
-		if self.compact:
-			self.flush()
-		else:
-			self.needvspace(1)
-
-	def start_h1(self, attrs):
-		self.needvspace(2)
-		self.setindent(self.stl.h1indent)
-		self.pushfontset(self.stl.h1fontset, BOLD)
-		self.fmt.setjust('c')
-
-	def end_h1(self):
-		self.popfontset()
-		self.needvspace(2)
-		self.setindent(self.stl.stdindent)
-		self.fmt.setjust('l')
-
-	def start_h2(self, attrs):
-		self.needvspace(1)
-		self.setindent(self.stl.h2indent)
-		self.pushfontset(self.stl.h2fontset, BOLD)
-
-	def end_h2(self):
-		self.popfontset()
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	def start_h3(self, attrs):
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-		self.pushfontset(self.stl.h3fontset, BOLD)
-
-	def end_h3(self):
-		self.popfontset()
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	def start_h4(self, attrs):
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-		self.pushfontset(self.stl.stdfontset, BOLD)
-
-	def end_h4(self):
-		self.popfontset()
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	start_h5 = start_h4
-	end_h5 = end_h4
-
-	start_h6 = start_h5
-	end_h6 = end_h5
-
-	start_h7 = start_h6
-	end_h7 = end_h6
-
-	def start_ul(self, attrs):
-		self.needvspace(1)
-		for attrname, value in attrs:
-			if attrname == 'compact':
-				self.compact = 1
-				self.setindent(0)
-				break
-		else:
-			self.setindent(self.stl.ulindent)
-
-	start_dir = start_menu = start_ol = start_ul
-
-	do_li = do_p
-
-	def end_ul(self):
-		self.compact = 0
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	end_dir = end_menu = end_ol = end_ul
-
-	def start_dl(self, attrs):
-		for attrname, value in attrs:
-			if attrname == 'compact':
-				self.compact = 1
-		self.needvspace(1)
-
-	def end_dl(self):
-		self.compact = 0
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	def do_dt(self, attrs):
-		if self.compact:
-			self.flush()
-		else:
-			self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-
-	def do_dd(self, attrs):
-		self.fmt.addword('', 1)
-		self.setindent(self.stl.ddindent)
-
-	def start_address(self, attrs):
-		self.compact = 1
-		self.needvspace(1)
-		self.fmt.setjust('r')
-
-	def end_address(self):
-		self.compact = 0
-		self.needvspace(1)
-		self.setindent(self.stl.stdindent)
-		self.fmt.setjust('l')
-
-	def start_pre(self, attrs):
-		self.needvspace(1)
-		self.nofill = self.nofill + 1
-		self.pushstyle(FIXED)
-
-	def end_pre(self):
-		self.popstyle()
-		self.nofill = self.nofill - 1
-		self.needvspace(1)
-
-	start_typewriter = start_pre
-	end_typewriter = end_pre
-
-	def do_img(self, attrs):
-		self.fmt.addword('(image)', 0)
-
-	# Physical styles
-
-	def start_tt(self, attrs): self.pushstyle(FIXED)
-	def end_tt(self): self.popstyle()
-
-	def start_b(self, attrs): self.pushstyle(BOLD)
-	def end_b(self): self.popstyle()
-
-	def start_i(self, attrs): self.pushstyle(ITALIC)
-	def end_i(self): self.popstyle()
-
-	def start_u(self, attrs): self.pushstyle(ITALIC) # Underline???
-	def end_u(self): self.popstyle()
-
-	def start_r(self, attrs): self.pushstyle(ROMAN) # Not official
-	def end_r(self): self.popstyle()
-
-	# Logical styles
-
-	start_em = start_i
-	end_em = end_i
-
-	start_strong = start_b
-	end_strong = end_b
-
-	start_code = start_tt
-	end_code = end_tt
-
-	start_samp = start_tt
-	end_samp = end_tt
-
-	start_kbd = start_tt
-	end_kbd = end_tt
-
-	start_file = start_tt # unofficial
-	end_file = end_tt
-
-	start_var = start_i
-	end_var = end_i
-
-	start_dfn = start_i
-	end_dfn = end_i
-
-	start_cite = start_i
-	end_cite = end_i
-
-	start_hp1 = start_i
-	end_hp1 = start_i
-
-	start_hp2 = start_b
-	end_hp2 = end_b
-
-	def unknown_starttag(self, tag, attrs):
-		print '*** unknown <' + tag + '>'
-
-	def unknown_endtag(self, tag):
-		print '*** unknown </' + tag + '>'
-
-
-# An extension of the formatting parser which formats anchors differently.
-class AnchoringParser(FormattingParser):
-
-	def start_a(self, attrs):
-		FormattingParser.start_a(self, attrs)
-		if self.inanchor:
-			self.fmt.bgn_anchor(self.inanchor)
-
-	def end_a(self):
-		if self.inanchor:
-			self.fmt.end_anchor(self.inanchor)
-			self.inanchor = 0
-
-
-# Style sheet -- this is never instantiated, but the attributes
-# of the class object itself are used to specify fonts to be used
-# for various paragraph styles.
-# A font set is a non-empty list of fonts, in the order:
-# [roman, italic, bold, fixed].
-# When a style is not available the nearest lower style is used
-
 ROMAN = 0
 ITALIC = 1
 BOLD = 2
 FIXED = 3
 
-class NullStylesheet:
-	# Fonts -- none
-	stdfontset = [None]
-	h1fontset = [None]
-	h2fontset = [None]
-	h3fontset = [None]
-	# Indents
-	stdindent = 2
-	ddindent = 25
-	ulindent = 4
-	h1indent = 0
-	h2indent = 0
-	literalindent = 0
 
+class HTMLParser(SGMLParser):
 
-class X11Stylesheet(NullStylesheet):
-	stdfontset = [
-		'-*-helvetica-medium-r-normal-*-*-100-100-*-*-*-*-*',
-		'-*-helvetica-medium-o-normal-*-*-100-100-*-*-*-*-*',
-		'-*-helvetica-bold-r-normal-*-*-100-100-*-*-*-*-*',
-		'-*-courier-medium-r-normal-*-*-100-100-*-*-*-*-*',
-		]
-	h1fontset = [
-		'-*-helvetica-medium-r-normal-*-*-180-100-*-*-*-*-*',
-		'-*-helvetica-medium-o-normal-*-*-180-100-*-*-*-*-*',
-		'-*-helvetica-bold-r-normal-*-*-180-100-*-*-*-*-*',
-		]
-	h2fontset = [
-		'-*-helvetica-medium-r-normal-*-*-140-100-*-*-*-*-*',
-		'-*-helvetica-medium-o-normal-*-*-140-100-*-*-*-*-*',
-		'-*-helvetica-bold-r-normal-*-*-140-100-*-*-*-*-*',
-		]
-	h3fontset = [
-		'-*-helvetica-medium-r-normal-*-*-120-100-*-*-*-*-*',
-		'-*-helvetica-medium-o-normal-*-*-120-100-*-*-*-*-*',
-		'-*-helvetica-bold-r-normal-*-*-120-100-*-*-*-*-*',
-		]
-	ddindent = 40
+    def __init__(self):
+	SGMLParser.__init__(self)
+	self.savedata = None
+	self.isindex = 0
+	self.title = ''
+	self.para = None
+	self.lists = []
+	self.styles = []
+	self.nofill = 0
+	self.nospace = 1
+	self.softspace = 0
 
+    # --- Data
 
-class MacStylesheet(NullStylesheet):
-	stdfontset = [
-		('Geneva', 'p', 10),
-		('Geneva', 'i', 10),
-		('Geneva', 'b', 10),
-		('Monaco', 'p', 10),
-		]
-	h1fontset = [
-		('Geneva', 'p', 18),
-		('Geneva', 'i', 18),
-		('Geneva', 'b', 18),
-		('Monaco', 'p', 18),
-		]
-	h3fontset = [
-		('Geneva', 'p', 14),
-		('Geneva', 'i', 14),
-		('Geneva', 'b', 14),
-		('Monaco', 'p', 14),
-		]
-	h3fontset = [
-		('Geneva', 'p', 12),
-		('Geneva', 'i', 12),
-		('Geneva', 'b', 12),
-		('Monaco', 'p', 12),
-		]
+    def handle_image(self, src, alt):
+	self.handle_data(alt)
 
+    def handle_data(self, data):
+	if self.nofill:
+	    self.handle_literal(data)
+	    return
+	data = regsub.gsub('[ \t\n\r]+', ' ', data)
+	if self.nospace and data[:1] == ' ': data = data[1:]
+	if not data: return
+	self.nospace = 0
+	if self.softspace and data[:1] != ' ': data = ' ' + data
+	if data[-1:] == ' ':
+	    data = data[:-1]
+	    self.softspace = 1
+	self.output_data(data)
 
-if os.name == 'mac':
-	StdwinStylesheet = MacStylesheet
-else:
-	StdwinStylesheet = X11Stylesheet
+    def handle_literal(self, data):
+	self.nospace = 0
+	self.softspace = 0
+	self.output_data(data)
 
+    def output_data(self, data):
+	if self.savedata is not None:
+	    self.savedata = self.savedata + data
+	else:
+	    self.write_data(data)
 
-class GLStylesheet(NullStylesheet):
-	stdfontset = [
-		'Helvetica 10',
-		'Helvetica-Italic 10',
-		'Helvetica-Bold 10',
-		'Courier 10',
-		]
-	h1fontset = [
-		'Helvetica 18',
-		'Helvetica-Italic 18',
-		'Helvetica-Bold 18',
-		'Courier 18',
-		]
-	h2fontset = [
-		'Helvetica 14',
-		'Helvetica-Italic 14',
-		'Helvetica-Bold 14',
-		'Courier 14',
-		]
-	h3fontset = [
-		'Helvetica 12',
-		'Helvetica-Italic 12',
-		'Helvetica-Bold 12',
-		'Courier 12',
-		]
+    def write_data(self, data):
+	sys.stdout.write(data)
 
+    def save_bgn(self):
+	self.savedata = ''
+	self.nospace = 1
+	self.softspace = 0
+
+    def save_end(self):
+	saved = self.savedata
+	self.savedata = None
+	self.nospace = 1
+	self.softspace = 0
+	return saved
+
+    def new_para(self):
+	pass
+
+    def new_style(self):
+	pass
+
+    # --- Generic style changes
+
+    def para_bgn(self, tag):
+	if not self.nospace:
+	    self.handle_literal('\n')
+	    self.nospace = 1
+	    self.softspace = 0
+	if tag is not None:
+	    self.para = tag
+	self.new_para()
+
+    def para_end(self):
+	self.para_bgn('')
+
+    def push_list(self, tag):
+	self.lists.append(tag)
+	self.para_bgn(None)
+
+    def pop_list(self):
+	del self.lists[-1]
+	self.para_end()
+
+    def literal_bgn(self, tag, attrs):
+	self.para_bgn(tag)
+
+    def literal_end(self, tag):
+	self.para_end()
+
+    def push_style(self, tag):
+	self.styles.append(tag)
+	self.new_style()
+
+    def pop_style(self):
+	del self.styles[-1]
+	self.new_style()
+
+    def anchor_bgn(self, href, name, type):
+	self.push_style(href and 'a' or None)
+
+    def anchor_end(self):
+	self.pop_style()
+
+    # --- Top level tags
+
+    def start_html(self, attrs): pass
+    def end_html(self): pass
+
+    def start_head(self, attrs): pass
+    def end_head(self): pass
+
+    def start_body(self, attrs): pass
+    def end_body(self): pass
+
+    def do_isindex(self, attrs):
+	self.isindex = 1
+
+    def start_title(self, attrs):
+	self.save_bgn()
+
+    def end_title(self):
+	self.title = self.save_end()
+
+    # --- Old HTML 'literal text' tags
+
+    def start_listing(self, attrs):
+	self.setliteral('listing')
+	self.literal_bgn('listing', attrs)
+
+    def end_listing(self):
+	self.literal_end('listing')
+
+    def start_xmp(self, attrs):
+	self.setliteral('xmp')
+	self.literal_bgn('xmp', attrs)
+
+    def end_xmp(self):
+	self.literal_end('xmp')
+
+    def do_plaintext(self, attrs):
+	self.setnomoretags()
+	self.literal_bgn('plaintext', attrs)
+
+    # --- Anchors
+
+    def start_a(self, attrs):
+	href = ''
+	name = ''
+	type = ''
+	for attrname, value in attrs:
+	    if attrname == 'href':
+		href = value
+	    if attrname == 'name':
+		name = value
+	    if attrname == 'type':
+		type = string.lower(value)
+	if not (href or name):
+	    return
+	self.anchor_bgn(href, name, type)
+
+    def end_a(self):
+	self.anchor_end()
+
+    # --- Paragraph tags
+
+    def do_p(self, attrs):
+	self.para_bgn(None)
+
+    def do_br(self, attrs):
+	self.handle_literal('\n')
+	self.nospace = 1
+	self.softspace = 0
+
+    def do_hr(self, attrs):
+	self.para_bgn(None)
+	self.handle_literal('-'*40)
+	self.para_end()
+
+    def start_h1(self, attrs):
+	self.para_bgn('h1')
+
+    def start_h2(self, attrs):
+	self.para_bgn('h2')
+
+    def start_h3(self, attrs):
+	self.para_bgn('h3')
+
+    def start_h4(self, attrs):
+	self.para_bgn('h4')
+
+    def start_h5(self, attrs):
+	self.para_bgn('h5')
+
+    def start_h6(self, attrs):
+	self.para_bgn('h6')
+
+    def end_h1(self):
+	self.para_end()
+
+    end_h2 = end_h1
+    end_h3 = end_h2
+    end_h4 = end_h3
+    end_h5 = end_h4
+    end_h6 = end_h5
+
+    def start_ul(self, attrs):
+	self.para_bgn(None)
+	self.push_list('ul')
+
+    def start_ol(self, attrs):
+	self.para_bgn(None)
+	self.push_list('ol')
+
+    def end_ul(self):
+	self.pop_list()
+	self.para_end()
+
+    def do_li(self, attrs):
+	self.para_bgn('li%d' % len(self.lists))
+
+    start_dir = start_menu = start_ul
+    end_dir = end_menu = end_ol = end_ul
+
+    def start_dl(self, attrs):
+	self.para_bgn(None)
+	self.push_list('dl')
+
+    def end_dl(self):
+	self.pop_list()
+	self.para_end()
+
+    def do_dt(self, attrs):
+	self.para_bgn('dt%d' % len(self.lists))
+
+    def do_dd(self, attrs):
+	self.para_bgn('dd%d' % len(self.lists))
+
+    def start_address(self, attrs):
+	self.para_bgn('address')
+
+    def end_address(self):
+	self.para_end()
+
+    def start_pre(self, attrs):
+	self.para_bgn('pre')
+	self.nofill = self.nofill + 1
+
+    def end_pre(self):
+	self.nofill = self.nofill - 1
+	self.para_end()
+
+    start_typewriter = start_pre
+    end_typewriter = end_pre
+
+    def do_img(self, attrs):
+	src = ''
+	alt = ' (image) '
+	for attrname, value in attrs:
+	    if attrname == 'alt':
+		alt = value
+	    if attrname == 'src':
+		src = value
+	self.handle_image(src, alt)
+
+    # --- Character tags -- physical styles
+
+    def start_tt(self, attrs): self.push_style(FIXED)
+    def end_tt(self): self.pop_style()
+
+    def start_b(self, attrs): self.push_style(BOLD)
+    def end_b(self): self.pop_style()
+
+    def start_i(self, attrs): self.push_style(ITALIC)
+    def end_i(self): self.pop_style()
+
+    def start_u(self, attrs): self.push_style(ITALIC) # Underline???
+    def end_u(self): self.pop_style()
+
+    def start_r(self, attrs): self.push_style(ROMAN) # Not official
+    def end_r(self): self.pop_style()
+
+    # --- Charaacter tags -- logical styles
+
+    start_em = start_i
+    end_em = end_i
+
+    start_strong = start_b
+    end_strong = end_b
+
+    start_code = start_tt
+    end_code = end_tt
+
+    start_samp = start_tt
+    end_samp = end_tt
+
+    start_kbd = start_tt
+    end_kbd = end_tt
+
+    start_file = start_tt # unofficial
+    end_file = end_tt
+
+    start_var = start_i
+    end_var = end_i
+
+    start_dfn = start_i
+    end_dfn = end_i
+
+    start_cite = start_i
+    end_cite = end_i
+
+    start_hp1 = start_i
+    end_hp1 = start_i
+
+    start_hp2 = start_b
+    end_hp2 = end_b
+
+    # --- Form tags
+
+    def start_form(self, attrs):
+	self.para_bgn(None)
+
+    def end_form(self):
+	self.para_end()
+
+    # --- Unhandled tags
+
+    def unknown_starttag(self, tag, attrs):
+	pass
+
+    def unknown_endtag(self, tag):
+	pass
 
-# Test program -- produces no output but times how long it takes
-# to send a document to a null formatter, exclusive of I/O
 
 def test():
-	import fmt
-	import time
-	if sys.argv[1:]: file = sys.argv[1]
-	else: file = 'test.html'
-	data = open(file, 'r').read()
-	t0 = time.time()
-	fmtr = fmt.WritingFormatter(sys.stdout, 79)
-	p = FormattingParser(fmtr, NullStylesheet)
-	p.feed(data)
-	p.close()
-	t1 = time.time()
-	print
-	print '*** Formatting time:', round(t1-t0, 3), 'seconds.'
-
-
-# Test program using stdwin
-
-def testStdwin():
-	import stdwin, fmt
-	from stdwinevents import *
-	if sys.argv[1:]: file = sys.argv[1]
-	else: file = 'test.html'
-	data = open(file, 'r').read()
-	window = stdwin.open('testStdwin')
-	b = None
-	while 1:
-		etype, ewin, edetail = stdwin.getevent()
-		if etype == WE_CLOSE:
-			break
-		if etype == WE_SIZE:
-			window.setdocsize(0, 0)
-			window.setorigin(0, 0)
-			window.change((0, 0), (10000, 30000)) # XXX
-		if etype == WE_DRAW:
-			if not b:
-				b = fmt.StdwinBackEnd(window, 1)
-				f = fmt.BaseFormatter(b.d, b)
-				p = FormattingParser(f, MacStylesheet)
-				p.feed(data)
-				p.close()
-				b.finish()
-			else:
-				b.redraw(edetail)
-	window.close()
-
-
-# Test program using GL
-
-def testGL():
-	import gl, GL, fmt
-	if sys.argv[1:]: file = sys.argv[1]
-	else: file = 'test.html'
-	data = open(file, 'r').read()
-	W, H = 600, 600
-	gl.foreground()
-	gl.prefsize(W, H)
-	wid = gl.winopen('testGL')
-	gl.ortho2(0, W, H, 0)
-	gl.color(GL.WHITE)
-	gl.clear()
-	gl.color(GL.BLACK)
-	b = fmt.GLBackEnd(wid)
-	f = fmt.BaseFormatter(b.d, b)
-	p = FormattingParser(f, GLStylesheet)
-	p.feed(data)
-	p.close()
-	b.finish()
-	#
-	import time
-	time.sleep(5)
+    file = 'test.html'
+    f = open(file, 'r')
+    data = f.read()
+    f.close()
+    p = HTMLParser()
+    p.feed(data)
+    p.close()
 
 
 if __name__ == '__main__':
-	test()
+    test()