Add an HTML text outline view.

Uses html2text, from here:

https://github.com/aaronsw/html2text

libmproxy/console/contentview.py

@@ -1,11 +1,11 @@
-import re, cStringIO
+import re, cStringIO, traceback
 import urwid
 from PIL import Image
 from PIL.ExifTags import TAGS
 import lxml.html, lxml.etree
 import common
 from .. import utils, encoding, flow
-from ..contrib import jsbeautifier
+from ..contrib import jsbeautifier, html2text
 
 VIEW_CUTOFF = 1024*50
 
@@ -19,6 +19,7 @@ VIEW_IMAGE = 6
 VIEW_RAW = 7
 VIEW_HEX = 8
 VIEW_HTML = 9
+VIEW_OUTLINE = 10
 
 VIEW_NAMES = {
     VIEW_AUTO: "Auto",
@@ -31,6 +32,7 @@ VIEW_NAMES = {
     VIEW_RAW: "Raw",
     VIEW_HEX: "Hex",
     VIEW_HTML: "HTML",
+    VIEW_OUTLINE: "HTML Outline",
 }
 
 
@@ -40,6 +42,7 @@ VIEW_PROMPT = (
     ("html", "h"),
     ("image", "i"),
     ("javascript", "j"),
+    ("html outline", "o"),
     ("json", "s"),
     ("raw", "r"),
     ("multipart", "m"),
@@ -56,6 +59,7 @@ VIEW_SHORTCUTS = {
     "s": VIEW_JSON,
     "u": VIEW_URLENCODED,
     "m": VIEW_MULTIPART,
+    "o": VIEW_OUTLINE,
     "r": VIEW_RAW,
     "e": VIEW_HEX,
 }
@@ -170,6 +174,16 @@ def view_html(hdrs, content, limit):
         return "HTML", _view_text(s[:limit], len(s), limit)
 
 
+def view_outline(hdrs, content, limit):
+    content = content.decode("utf-8")
+    h = html2text.HTML2Text(baseurl="")
+    h.ignore_images = True
+    h.body_width = 0
+    content = h.handle(content)
+    txt = _view_text(content[:limit], len(content), limit)
+    return "HTML Outline", txt
+
+
 def view_json(hdrs, content, limit):
     lines = utils.pretty_json(content)
     if lines:
@@ -282,6 +296,7 @@ PRETTY_FUNCTION_MAP = {
     VIEW_IMAGE: view_image,
     VIEW_HEX: view_hex,
     VIEW_RAW: view_raw,
+    VIEW_OUTLINE: view_outline,
 }
 
 def get_view_func(viewmode, hdrs, content):
@@ -318,7 +333,9 @@ def get_content_view(viewmode, hdrItems, content, limit):
     try:
         ret = func(hdrs, content, limit)
     # Third-party viewers can fail in unexpected ways...
-    except:
+    except Exception, e:
+        s = traceback.format_exc()
+        return "", _view_text(s, len(s), len(s))
         ret = None
     if not ret:
         viewmode = VIEW_RAW

libmproxy/contrib/README

@@ -1,6 +1,7 @@
 
 Contribs:
 
+
 pyparsing 1.5.2, MIT license
 
 jsbeautifier, git checkout 25/03/12, MIT license
@@ -8,3 +9,6 @@ jsbeautifier, git checkout 25/03/12, MIT license
     - Disabled packers through a single-line modification (see "# CORTESI"
     comment)
 
+html2text, git checkout 18/08/12, GPLv3
+
+

libmproxy/contrib/html2text.py

@@ -0,0 +1,834 @@
+#!/usr/bin/env python
+"""html2text: Turn HTML into equivalent Markdown-structured text."""
+__version__ = "3.200.3"
+__author__ = "Aaron Swartz (me@aaronsw.com)"
+__copyright__ = "(C) 2004-2008 Aaron Swartz. GNU GPL 3."
+__contributors__ = ["Martin 'Joey' Schulze", "Ricardo Reyes", "Kevin Jay North"]
+
+# TODO:
+#   Support decoded entities with unifiable.
+
+try:
+    True
+except NameError:
+    setattr(__builtins__, 'True', 1)
+    setattr(__builtins__, 'False', 0)
+
+def has_key(x, y):
+    if hasattr(x, 'has_key'): return x.has_key(y)
+    else: return y in x
+
+try:
+    import htmlentitydefs
+    import urlparse
+    import HTMLParser
+except ImportError: #Python3
+    import html.entities as htmlentitydefs
+    import urllib.parse as urlparse
+    import html.parser as HTMLParser
+try: #Python3
+    import urllib.request as urllib
+except:
+    import urllib
+import optparse, re, sys, codecs, types
+
+try: from textwrap import wrap
+except: pass
+
+# Use Unicode characters instead of their ascii psuedo-replacements
+UNICODE_SNOB = 0
+
+# Put the links after each paragraph instead of at the end.
+LINKS_EACH_PARAGRAPH = 0
+
+# Wrap long lines at position. 0 for no wrapping. (Requires Python 2.3.)
+BODY_WIDTH = 78
+
+# Don't show internal links (href="#local-anchor") -- corresponding link targets
+# won't be visible in the plain text file anyway.
+SKIP_INTERNAL_LINKS = True
+
+# Use inline, rather than reference, formatting for images and links
+INLINE_LINKS = True
+
+# Number of pixels Google indents nested lists
+GOOGLE_LIST_INDENT = 36
+
+IGNORE_ANCHORS = False
+IGNORE_IMAGES = False
+IGNORE_EMPHASIS = False
+
+### Entity Nonsense ###
+
+def name2cp(k):
+    if k == 'apos': return ord("'")
+    if hasattr(htmlentitydefs, "name2codepoint"): # requires Python 2.3
+        return htmlentitydefs.name2codepoint[k]
+    else:
+        k = htmlentitydefs.entitydefs[k]
+        if k.startswith("&#") and k.endswith(";"): return int(k[2:-1]) # not in latin-1
+        return ord(codecs.latin_1_decode(k)[0])
+
+unifiable = {'rsquo':"'", 'lsquo':"'", 'rdquo':'"', 'ldquo':'"',
+'copy':'(C)', 'mdash':'--', 'nbsp':' ', 'rarr':'->', 'larr':'<-', 'middot':'*',
+'ndash':'-', 'oelig':'oe', 'aelig':'ae',
+'agrave':'a', 'aacute':'a', 'acirc':'a', 'atilde':'a', 'auml':'a', 'aring':'a',
+'egrave':'e', 'eacute':'e', 'ecirc':'e', 'euml':'e',
+'igrave':'i', 'iacute':'i', 'icirc':'i', 'iuml':'i',
+'ograve':'o', 'oacute':'o', 'ocirc':'o', 'otilde':'o', 'ouml':'o',
+'ugrave':'u', 'uacute':'u', 'ucirc':'u', 'uuml':'u',
+'lrm':'', 'rlm':''}
+
+unifiable_n = {}
+
+for k in unifiable.keys():
+    unifiable_n[name2cp(k)] = unifiable[k]
+
+### End Entity Nonsense ###
+
+def onlywhite(line):
+    """Return true if the line does only consist of whitespace characters."""
+    for c in line:
+        if c is not ' ' and c is not '  ':
+            return c is ' '
+    return line
+
+def hn(tag):
+    if tag[0] == 'h' and len(tag) == 2:
+        try:
+            n = int(tag[1])
+            if n in range(1, 10): return n
+        except ValueError: return 0
+
+def dumb_property_dict(style):
+    """returns a hash of css attributes"""
+    return dict([(x.strip(), y.strip()) for x, y in [z.split(':', 1) for z in style.split(';') if ':' in z]]);
+
+def dumb_css_parser(data):
+    """returns a hash of css selectors, each of which contains a hash of css attributes"""
+    # remove @import sentences
+    importIndex = data.find('@import')
+    while importIndex != -1:
+        data = data[0:importIndex] + data[data.find(';', importIndex) + 1:]
+        importIndex = data.find('@import')
+
+    # parse the css. reverted from dictionary compehension in order to support older pythons
+    elements =  [x.split('{') for x in data.split('}') if '{' in x.strip()]
+    try:
+        elements = dict([(a.strip(), dumb_property_dict(b)) for a, b in elements])
+    except ValueError:
+        elements = {} # not that important
+
+    return elements
+
+def element_style(attrs, style_def, parent_style):
+    """returns a hash of the 'final' style attributes of the element"""
+    style = parent_style.copy()
+    if 'class' in attrs:
+        for css_class in attrs['class'].split():
+            css_style = style_def['.' + css_class]
+            style.update(css_style)
+    if 'style' in attrs:
+        immediate_style = dumb_property_dict(attrs['style'])
+        style.update(immediate_style)
+    return style
+
+def google_list_style(style):
+    """finds out whether this is an ordered or unordered list"""
+    if 'list-style-type' in style:
+        list_style = style['list-style-type']
+        if list_style in ['disc', 'circle', 'square', 'none']:
+            return 'ul'
+    return 'ol'
+
+def google_has_height(style):
+    """check if the style of the element has the 'height' attribute explicitly defined"""
+    if 'height' in style:
+        return True
+    return False
+
+def google_text_emphasis(style):
+    """return a list of all emphasis modifiers of the element"""
+    emphasis = []
+    if 'text-decoration' in style:
+        emphasis.append(style['text-decoration'])
+    if 'font-style' in style:
+        emphasis.append(style['font-style'])
+    if 'font-weight' in style:
+        emphasis.append(style['font-weight'])
+    return emphasis
+
+def google_fixed_width_font(style):
+    """check if the css of the current element defines a fixed width font"""
+    font_family = ''
+    if 'font-family' in style:
+        font_family = style['font-family']
+    if 'Courier New' == font_family or 'Consolas' == font_family:
+        return True
+    return False
+
+def list_numbering_start(attrs):
+    """extract numbering from list element attributes"""
+    if 'start' in attrs:
+        return int(attrs['start']) - 1
+    else:
+        return 0
+
+class HTML2Text(HTMLParser.HTMLParser):
+    def __init__(self, out=None, baseurl=''):
+        HTMLParser.HTMLParser.__init__(self)
+
+        # Config options
+        self.unicode_snob = UNICODE_SNOB
+        self.links_each_paragraph = LINKS_EACH_PARAGRAPH
+        self.body_width = BODY_WIDTH
+        self.skip_internal_links = SKIP_INTERNAL_LINKS
+        self.inline_links = INLINE_LINKS
+        self.google_list_indent = GOOGLE_LIST_INDENT
+        self.ignore_links = IGNORE_ANCHORS
+        self.ignore_images = IGNORE_IMAGES
+        self.ignore_emphasis = IGNORE_EMPHASIS
+        self.google_doc = False
+        self.ul_item_mark = '*'
+
+        if out is None:
+            self.out = self.outtextf
+        else:
+            self.out = out
+
+        self.outtextlist = []  # empty list to store output characters before they are "joined"
+
+        try:
+            self.outtext = unicode()
+        except NameError:  # Python3
+            self.outtext = str()
+
+        self.quiet = 0
+        self.p_p = 0  # number of newline character to print before next output
+        self.outcount = 0
+        self.start = 1
+        self.space = 0
+        self.a = []
+        self.astack = []
+        self.acount = 0
+        self.list = []
+        self.blockquote = 0
+        self.pre = 0
+        self.startpre = 0
+        self.code = False
+        self.br_toggle = ''
+        self.lastWasNL = 0
+        self.lastWasList = False
+        self.style = 0
+        self.style_def = {}
+        self.tag_stack = []
+        self.emphasis = 0
+        self.drop_white_space = 0
+        self.inheader = False
+        self.abbr_title = None  # current abbreviation definition
+        self.abbr_data = None  # last inner HTML (for abbr being defined)
+        self.abbr_list = {}  # stack of abbreviations to write later
+        self.baseurl = baseurl
+
+        try: del unifiable_n[name2cp('nbsp')]
+        except KeyError: pass
+        unifiable['nbsp'] = '&nbsp_place_holder;'
+
+
+    def feed(self, data):
+        data = data.replace("</' + 'script>", "</ignore>")
+        HTMLParser.HTMLParser.feed(self, data)
+
+    def handle(self, data):
+        self.feed(data)
+        self.feed("")
+        return self.optwrap(self.close())
+
+    def outtextf(self, s):
+        self.outtextlist.append(s)
+        if s: self.lastWasNL = s[-1] == '\n'
+
+    def close(self):
+        HTMLParser.HTMLParser.close(self)
+
+        self.pbr()
+        self.o('', 0, 'end')
+
+        self.outtext = self.outtext.join(self.outtextlist)
+        if self.unicode_snob:
+            nbsp = unichr(name2cp('nbsp'))
+        else:
+            nbsp = u' '
+        self.outtext = self.outtext.replace(u'&nbsp_place_holder;', nbsp)
+
+        return self.outtext
+
+    def handle_charref(self, c):
+        self.o(self.charref(c), 1)
+
+    def handle_entityref(self, c):
+        self.o(self.entityref(c), 1)
+
+    def handle_starttag(self, tag, attrs):
+        self.handle_tag(tag, attrs, 1)
+
+    def handle_endtag(self, tag):
+        self.handle_tag(tag, None, 0)
+
+    def previousIndex(self, attrs):
+        """ returns the index of certain set of attributes (of a link) in the
+            self.a list
+
+            If the set of attributes is not found, returns None
+        """
+        if not has_key(attrs, 'href'): return None
+
+        i = -1
+        for a in self.a:
+            i += 1
+            match = 0
+
+            if has_key(a, 'href') and a['href'] == attrs['href']:
+                if has_key(a, 'title') or has_key(attrs, 'title'):
+                        if (has_key(a, 'title') and has_key(attrs, 'title') and
+                            a['title'] == attrs['title']):
+                            match = True
+                else:
+                    match = True
+
+            if match: return i
+
+    def drop_last(self, nLetters):
+        if not self.quiet:
+            self.outtext = self.outtext[:-nLetters]
+
+    def handle_emphasis(self, start, tag_style, parent_style):
+        """handles various text emphases"""
+        tag_emphasis = google_text_emphasis(tag_style)
+        parent_emphasis = google_text_emphasis(parent_style)
+
+        # handle Google's text emphasis
+        strikethrough =  'line-through' in tag_emphasis and self.hide_strikethrough
+        bold = 'bold' in tag_emphasis and not 'bold' in parent_emphasis
+        italic = 'italic' in tag_emphasis and not 'italic' in parent_emphasis
+        fixed = google_fixed_width_font(tag_style) and not \
+                google_fixed_width_font(parent_style) and not self.pre
+
+        if start:
+            # crossed-out text must be handled before other attributes
+            # in order not to output qualifiers unnecessarily
+            if bold or italic or fixed:
+                self.emphasis += 1
+            if strikethrough:
+                self.quiet += 1
+            if italic:
+                self.o("_")
+                self.drop_white_space += 1
+            if bold:
+                self.o("**")
+                self.drop_white_space += 1
+            if fixed:
+                self.o('`')
+                self.drop_white_space += 1
+                self.code = True
+        else:
+            if bold or italic or fixed:
+                # there must not be whitespace before closing emphasis mark
+                self.emphasis -= 1
+                self.space = 0
+                self.outtext = self.outtext.rstrip()
+            if fixed:
+                if self.drop_white_space:
+                    # empty emphasis, drop it
+                    self.drop_last(1)
+                    self.drop_white_space -= 1
+                else:
+                    self.o('`')
+                self.code = False
+            if bold:
+                if self.drop_white_space:
+                    # empty emphasis, drop it
+                    self.drop_last(2)
+                    self.drop_white_space -= 1
+                else:
+                    self.o("**")
+            if italic:
+                if self.drop_white_space:
+                    # empty emphasis, drop it
+                    self.drop_last(1)
+                    self.drop_white_space -= 1
+                else:
+                    self.o("_")
+            # space is only allowed after *all* emphasis marks
+            if (bold or italic) and not self.emphasis:
+                    self.o(" ")
+            if strikethrough:
+                self.quiet -= 1
+
+    def handle_tag(self, tag, attrs, start):
+        #attrs = fixattrs(attrs)
+        if attrs is None:
+            attrs = {}
+        else:
+            attrs = dict(attrs)
+
+        if self.google_doc:
+            # the attrs parameter is empty for a closing tag. in addition, we
+            # need the attributes of the parent nodes in order to get a
+            # complete style description for the current element. we assume
+            # that google docs export well formed html.
+            parent_style = {}
+            if start:
+                if self.tag_stack:
+                  parent_style = self.tag_stack[-1][2]
+                tag_style = element_style(attrs, self.style_def, parent_style)
+                self.tag_stack.append((tag, attrs, tag_style))
+            else:
+                dummy, attrs, tag_style = self.tag_stack.pop()
+                if self.tag_stack:
+                    parent_style = self.tag_stack[-1][2]
+
+        if hn(tag):
+            self.p()
+            if start:
+                self.inheader = True
+                self.o(hn(tag)*"#" + ' ')
+            else:
+                self.inheader = False
+                return # prevent redundant emphasis marks on headers
+
+        if tag in ['p', 'div']:
+            if self.google_doc:
+                if start and google_has_height(tag_style):
+                    self.p()
+                else:
+                    self.soft_br()
+            else:
+                self.p()
+
+        if tag == "br" and start: self.o("  \n")
+
+        if tag == "hr" and start:
+            self.p()
+            self.o("* * *")
+            self.p()
+
+        if tag in ["head", "style", 'script']:
+            if start: self.quiet += 1
+            else: self.quiet -= 1
+
+        if tag == "style":
+            if start: self.style += 1
+            else: self.style -= 1
+
+        if tag in ["body"]:
+            self.quiet = 0 # sites like 9rules.com never close <head>
+
+        if tag == "blockquote":
+            if start:
+                self.p(); self.o('> ', 0, 1); self.start = 1
+                self.blockquote += 1
+            else:
+                self.blockquote -= 1
+                self.p()
+
+        if tag in ['em', 'i', 'u'] and not self.ignore_emphasis: self.o("_")
+        if tag in ['strong', 'b'] and not self.ignore_emphasis: self.o("**")
+        if tag in ['del', 'strike', 's']:
+            if start:
+                self.o("<"+tag+">")
+            else:
+                self.o("</"+tag+">")
+
+        if self.google_doc:
+            if not self.inheader:
+                # handle some font attributes, but leave headers clean
+                self.handle_emphasis(start, tag_style, parent_style)
+
+        if tag in ["code", "tt"] and not self.pre: self.o('`') #TODO: `` `this` ``
+        if tag == "abbr":
+            if start:
+                self.abbr_title = None
+                self.abbr_data = ''
+                if has_key(attrs, 'title'):
+                    self.abbr_title = attrs['title']
+            else:
+                if self.abbr_title != None:
+                    self.abbr_list[self.abbr_data] = self.abbr_title
+                    self.abbr_title = None
+                self.abbr_data = ''
+
+        if tag == "a" and not self.ignore_links:
+            if start:
+                if has_key(attrs, 'href') and not (self.skip_internal_links and attrs['href'].startswith('#')):
+                    self.astack.append(attrs)
+                    self.o("[")
+                else:
+                    self.astack.append(None)
+            else:
+                if self.astack:
+                    a = self.astack.pop()
+                    if a:
+                        if self.inline_links:
+                            self.o("](" + escape_md(a['href']) + ")")
+                        else:
+                            i = self.previousIndex(a)
+                            if i is not None:
+                                a = self.a[i]
+                            else:
+                                self.acount += 1
+                                a['count'] = self.acount
+                                a['outcount'] = self.outcount
+                                self.a.append(a)
+                            self.o("][" + str(a['count']) + "]")
+
+        if tag == "img" and start and not self.ignore_images:
+            if has_key(attrs, 'src'):
+                attrs['href'] = attrs['src']
+                alt = attrs.get('alt', '')
+                self.o("![" + escape_md(alt) + "]")
+
+                if self.inline_links:
+                    self.o("(" + escape_md(attrs['href']) + ")")
+                else:
+                    i = self.previousIndex(attrs)
+                    if i is not None:
+                        attrs = self.a[i]
+                    else:
+                        self.acount += 1
+                        attrs['count'] = self.acount
+                        attrs['outcount'] = self.outcount
+                        self.a.append(attrs)
+                    self.o("[" + str(attrs['count']) + "]")
+
+        if tag == 'dl' and start: self.p()
+        if tag == 'dt' and not start: self.pbr()
+        if tag == 'dd' and start: self.o('    ')
+        if tag == 'dd' and not start: self.pbr()
+
+        if tag in ["ol", "ul"]:
+            # Google Docs create sub lists as top level lists
+            if (not self.list) and (not self.lastWasList):
+                self.p()
+            if start:
+                if self.google_doc:
+                    list_style = google_list_style(tag_style)
+                else:
+                    list_style = tag
+                numbering_start = list_numbering_start(attrs)
+                self.list.append({'name':list_style, 'num':numbering_start})
+            else:
+                if self.list: self.list.pop()
+            self.lastWasList = True
+        else:
+            self.lastWasList = False
+
+        if tag == 'li':
+            self.pbr()
+            if start:
+                if self.list: li = self.list[-1]
+                else: li = {'name':'ul', 'num':0}
+                if self.google_doc:
+                    nest_count = self.google_nest_count(tag_style)
+                else:
+                    nest_count = len(self.list)
+                self.o("  " * nest_count) #TODO: line up <ol><li>s > 9 correctly.
+                if li['name'] == "ul": self.o(self.ul_item_mark + " ")
+                elif li['name'] == "ol":
+                    li['num'] += 1
+                    self.o(str(li['num'])+". ")
+                self.start = 1
+
+        if tag in ["table", "tr"] and start: self.p()
+        if tag == 'td': self.pbr()
+
+        if tag == "pre":
+            if start:
+                self.startpre = 1
+                self.pre = 1
+            else:
+                self.pre = 0
+            self.p()
+
+    def pbr(self):
+        if self.p_p == 0:
+            self.p_p = 1
+
+    def p(self):
+        self.p_p = 2
+
+    def soft_br(self):
+        self.pbr()
+        self.br_toggle = '  '
+
+    def o(self, data, puredata=0, force=0):
+        if self.abbr_data is not None:
+            self.abbr_data += data
+
+        if not self.quiet:
+            if self.google_doc:
+                # prevent white space immediately after 'begin emphasis' marks ('**' and '_')
+                lstripped_data = data.lstrip()
+                if self.drop_white_space and not (self.pre or self.code):
+                    data = lstripped_data
+                if lstripped_data != '':
+                    self.drop_white_space = 0
+
+            if puredata and not self.pre:
+                data = re.sub('\s+', ' ', data)
+                if data and data[0] == ' ':
+                    self.space = 1
+                    data = data[1:]
+            if not data and not force: return
+
+            if self.startpre:
+                #self.out(" :") #TODO: not output when already one there
+                self.startpre = 0
+
+            bq = (">" * self.blockquote)
+            if not (force and data and data[0] == ">") and self.blockquote: bq += " "
+
+            if self.pre:
+                bq += "    "
+                data = data.replace("\n", "\n"+bq)
+
+            if self.start:
+                self.space = 0
+                self.p_p = 0
+                self.start = 0
+
+            if force == 'end':
+                # It's the end.
+                self.p_p = 0
+                self.out("\n")
+                self.space = 0
+
+            if self.p_p:
+                self.out((self.br_toggle+'\n'+bq)*self.p_p)
+                self.space = 0
+                self.br_toggle = ''
+
+            if self.space:
+                if not self.lastWasNL: self.out(' ')
+                self.space = 0
+
+            if self.a and ((self.p_p == 2 and self.links_each_paragraph) or force == "end"):
+                if force == "end": self.out("\n")
+
+                newa = []
+                for link in self.a:
+                    if self.outcount > link['outcount']:
+                        self.out("   ["+ str(link['count']) +"]: " + urlparse.urljoin(self.baseurl, link['href']))
+                        if has_key(link, 'title'): self.out(" ("+link['title']+")")
+                        self.out("\n")
+                    else:
+                        newa.append(link)
+
+                if self.a != newa: self.out("\n") # Don't need an extra line when nothing was done.
+
+                self.a = newa
+
+            if self.abbr_list and force == "end":
+                for abbr, definition in self.abbr_list.items():
+                    self.out("  *[" + abbr + "]: " + definition + "\n")
+
+            self.p_p = 0
+            self.out(data)
+            self.outcount += 1
+
+    def handle_data(self, data):
+        if r'\/script>' in data: self.quiet -= 1
+
+        if self.style:
+            self.style_def.update(dumb_css_parser(data))
+
+        self.o(data, 1)
+
+    def unknown_decl(self, data): pass
+
+    def charref(self, name):
+        if name[0] in ['x','X']:
+            c = int(name[1:], 16)
+        else:
+            c = int(name)
+
+        if not self.unicode_snob and c in unifiable_n.keys():
+            return unifiable_n[c]
+        else:
+            try:
+                return unichr(c)
+            except NameError: #Python3
+                return chr(c)
+
+    def entityref(self, c):
+        if not self.unicode_snob and c in unifiable.keys():
+            return unifiable[c]
+        else:
+            try: name2cp(c)
+            except KeyError: return "&" + c + ';'
+            else:
+                try:
+                    return unichr(name2cp(c))
+                except NameError: #Python3
+                    return chr(name2cp(c))
+
+    def replaceEntities(self, s):
+        s = s.group(1)
+        if s[0] == "#":
+            return self.charref(s[1:])
+        else: return self.entityref(s)
+
+    r_unescape = re.compile(r"&(#?[xX]?(?:[0-9a-fA-F]+|\w{1,8}));")
+    def unescape(self, s):
+        return self.r_unescape.sub(self.replaceEntities, s)
+
+    def google_nest_count(self, style):
+        """calculate the nesting count of google doc lists"""
+        nest_count = 0
+        if 'margin-left' in style:
+            nest_count = int(style['margin-left'][:-2]) / self.google_list_indent
+        return nest_count
+
+
+    def optwrap(self, text):
+        """Wrap all paragraphs in the provided text."""
+        if not self.body_width:
+            return text
+
+        assert wrap, "Requires Python 2.3."
+        result = ''
+        newlines = 0
+        for para in text.split("\n"):
+            if len(para) > 0:
+                if not skipwrap(para):
+                    for line in wrap(para, self.body_width):
+                        result += line + "\n"
+                    result += "\n"
+                    newlines = 2
+                else:
+                    if not onlywhite(para):
+                        result += para + "\n"
+                        newlines = 1
+            else:
+                if newlines < 2:
+                    result += "\n"
+                    newlines += 1
+        return result
+
+ordered_list_matcher = re.compile(r'\d+\.\s')
+unordered_list_matcher = re.compile(r'[-\*\+]\s')
+md_chars_matcher = re.compile(r"([\\\[\]\(\)])")
+
+def skipwrap(para):
+    # If the text begins with four spaces or one tab, it's a code block; don't wrap
+    if para[0:4] == '    ' or para[0] == '\t':
+        return True
+    # If the text begins with only two "--", possibly preceded by whitespace, that's
+    # an emdash; so wrap.
+    stripped = para.lstrip()
+    if stripped[0:2] == "--" and stripped[2] != "-":
+        return False
+    # I'm not sure what this is for; I thought it was to detect lists, but there's
+    # a <br>-inside-<span> case in one of the tests that also depends upon it.
+    if stripped[0:1] == '-' or stripped[0:1] == '*':
+        return True
+    # If the text begins with a single -, *, or +, followed by a space, or an integer,
+    # followed by a ., followed by a space (in either case optionally preceeded by
+    # whitespace), it's a list; don't wrap.
+    if ordered_list_matcher.match(stripped) or unordered_list_matcher.match(stripped):
+        return True
+    return False
+
+def wrapwrite(text):
+    text = text.encode('utf-8')
+    try: #Python3
+        sys.stdout.buffer.write(text)
+    except AttributeError:
+        sys.stdout.write(text)
+
+def html2text(html, baseurl=''):
+    h = HTML2Text(baseurl=baseurl)
+    return h.handle(html)
+
+def unescape(s, unicode_snob=False):
+    h = HTML2Text()
+    h.unicode_snob = unicode_snob
+    return h.unescape(s)
+
+def escape_md(text):
+    """Escapes markdown-sensitive characters."""
+    return md_chars_matcher.sub(r"\\\1", text)
+
+def main():
+    baseurl = ''
+
+    p = optparse.OptionParser('%prog [(filename|url) [encoding]]',
+                              version='%prog ' + __version__)
+    p.add_option("--ignore-emphasis", dest="ignore_emphasis", action="store_true", 
+        default=IGNORE_EMPHASIS, help="don't include any formatting for emphasis")
+    p.add_option("--ignore-links", dest="ignore_links", action="store_true",
+        default=IGNORE_ANCHORS, help="don't include any formatting for links")
+    p.add_option("--ignore-images", dest="ignore_images", action="store_true",
+        default=IGNORE_IMAGES, help="don't include any formatting for images")
+    p.add_option("-g", "--google-doc", action="store_true", dest="google_doc",
+        default=False, help="convert an html-exported Google Document")
+    p.add_option("-d", "--dash-unordered-list", action="store_true", dest="ul_style_dash",
+        default=False, help="use a dash rather than a star for unordered list items")
+    p.add_option("-b", "--body-width", dest="body_width", action="store", type="int",
+        default=BODY_WIDTH, help="number of characters per output line, 0 for no wrap")
+    p.add_option("-i", "--google-list-indent", dest="list_indent", action="store", type="int",
+        default=GOOGLE_LIST_INDENT, help="number of pixels Google indents nested lists")
+    p.add_option("-s", "--hide-strikethrough", action="store_true", dest="hide_strikethrough",
+        default=False, help="hide strike-through text. only relevent when -g is specified as well")
+    (options, args) = p.parse_args()
+
+    # process input
+    encoding = "utf-8"
+    if len(args) > 0:
+        file_ = args[0]
+        if len(args) == 2:
+            encoding = args[1]
+        if len(args) > 2:
+            p.error('Too many arguments')
+
+        if file_.startswith('http://') or file_.startswith('https://'):
+            baseurl = file_
+            j = urllib.urlopen(baseurl)
+            data = j.read()
+            if encoding is None:
+                try:
+                    from feedparser import _getCharacterEncoding as enc
+                except ImportError:
+                    enc = lambda x, y: ('utf-8', 1)
+                encoding = enc(j.headers, data)[0]
+                if encoding == 'us-ascii':
+                    encoding = 'utf-8'
+        else:
+            data = open(file_, 'rb').read()
+            if encoding is None:
+                try:
+                    from chardet import detect
+                except ImportError:
+                    detect = lambda x: {'encoding': 'utf-8'}
+                encoding = detect(data)['encoding']
+    else:
+        data = sys.stdin.read()
+
+    data = data.decode(encoding)
+    h = HTML2Text(baseurl=baseurl)
+    # handle options
+    if options.ul_style_dash: h.ul_item_mark = '-'
+
+    h.body_width = options.body_width
+    h.list_indent = options.list_indent
+    h.ignore_emphasis = options.ignore_emphasis
+    h.ignore_links = options.ignore_links
+    h.ignore_images = options.ignore_images
+    h.google_doc = options.google_doc
+    h.hide_strikethrough = options.hide_strikethrough
+
+    wrapwrite(h.handle(data))
+
+
+if __name__ == "__main__":
+    main()