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# Natural Language Toolkit: WordNet Browser Application # # Copyright (C) 2001-2012 NLTK Project # Author: Jussi Salmela <jtsalmela@users.sourceforge.net> # Paul Bone <pbone@students.csse.unimelb.edu.au> # URL: <http://www.nltk.org/> # For license information, see LICENSE.TXT
A WordNet Browser application which launches the default browser (if it is not already running) and opens a new tab with a connection to http://localhost:port/ . It also starts an HTTP server on the specified port and begins serving browser requests. The default port is 8000. (For command-line help, run "python wordnet -h") This application requires that the user's web browser supports Javascript.
BrowServer is a server for browsing the NLTK Wordnet database It first launches a browser client to be used for browsing and then starts serving the requests of that and maybe other clients
Usage::
browserver.py -h browserver.py [-s] [-p <port>]
Options::
-h or --help Display this help message.
-l <file> or --log-file <file> Logs messages to the given file, If this option is not specified messages are silently dropped.
-p <port> or --port <port> Run the web server on this TCP port, defaults to 8000.
-s or --server-mode Do not start a web browser, and do not allow a user to shotdown the server through the web interface. """ # TODO: throughout this package variable names and docstrings need # modifying to be compliant with NLTK's coding standards. Tests also # need to be develop to ensure this continues to work in the face of # changes to other NLTK packages.
# Allow this program to run inside the NLTK source tree.
# now included in local file # from util import html_header, html_trailer, \ # get_static_index_page, get_static_page_by_path, \ # page_from_word, page_from_href
# True if we're not also running a web browser. The value f server_mode # gets set by demo().
# If set this is a file object for writting log messages.
self.send_head()
global firstClient sp = self.path[1:] if compat.unquote_plus(sp) == 'SHUTDOWN THE SERVER': if server_mode: page = "Server must be killed with SIGTERM." type = "text/plain" else: print('Server shutting down!') os._exit(0)
elif sp == 'favicon.ico': type = 'image/x-icon' page = favicon_data()
elif sp == '': # First request. type = 'text/html' if not server_mode and firstClient: firstClient = False page = get_static_index_page(True) else: page = get_static_index_page(False) word = 'green'
elif sp.endswith('.html'): # Trying to fetch a HTML file TODO: type = 'text/html' usp = compat.unquote_plus(sp) if usp == 'NLTK Wordnet Browser Database Info.html': word = '* Database Info *' if os.path.isfile(usp): page = open(usp).read() else: page = (html_header % word) + \ '<p>The database info file:'\ '<p><b>' + usp + '</b>' + \ '<p>was not found. Run this:' + \ '<p><b>python dbinfo_html.py</b>' + \ '<p>to produce it.' + html_trailer else: # Handle files here. word = sp page = get_static_page_by_path(usp) elif sp.startswith("search"): # This doesn't seem to work with MWEs. type = 'text/html' parts = (sp.split("?")[1]).split("&") word = [p.split("=")[1].replace("+", " ") for p in parts if p.startswith("nextWord")][0] page, word = page_from_word(word) elif sp.startswith("lookup_"): # TODO add a variation of this that takes a non ecoded word or MWE. type = 'text/html' sp = sp[len("lookup_"):] page, word = page_from_href(sp) elif sp == "start_page": # if this is the first request we should display help # information, and possibly set a default word. type = 'text/html' page, word = page_from_word("wordnet") else: type = 'text/plain' page = "Could not parse request: '%s'" % sp
# Send result. self.send_head(type) self.wfile.write(page)
self.send_response(200) self.send_header('Content-type', type) self.end_headers()
global logfile
if logfile: logfile.write( "%s - - [%s] %s\n" % (self.address_string(), self.log_date_time_string(), format%args))
# This data was encoded with the following procedure f = open("favicon.ico", "rb") s = f.read() f.close()
def split(s): if len(s) <= 72: return [s] else: return [s[0:72]] + split(s[72:])
print(split(base64.urlsafe_b64encode(s)))
['AAABAAEAEBAAAAAAAABoBQAAFgAAACgAAAAQAAAAIAAAAAEACAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAD___8A9___ANb3_wDO9_8AjPf_ALXv_wCc7_8AjO__AHvv_wBz7_8Aa-__AKXn', '_wCc5_8AlOf_AITn_wBz5_8Aa-f_AGPn_wBa5_8Ac97_AGve_wBj3v8AWt7_AFLe_wBK3v8A', 'Qt7_AFrW_wBS1v8AStb_AELW_wA51v8AMdb_ACnO_wAhzv8AGM7_ABjG_wD___cA__f3APf3', '9wB73vcAUtb3AErW9wAhxvcAAMb3AFLO7wAYxu8AEMbvACG95wAYvecA9-fWAHPG1gBKvdYA', 'Ob3WACG91gDv3s4Axt7OACm1zgCMtb0ASq29ACGlvQBStbUAUq21ADGttQA5pbUA3satAEqc', 'rQDWvaUAY62lAOfGnADWvZwAtbWcAJStnADGrZQAzq2MAIycjABznIwAa5yMAN61hADWrXsA', 'zq17AMalewCtpXsAa4x7AMaccwC9nHMAtZRzAISUcwBrjHMAzqVrALWUawCtlGsArYxrAHuE', 'awBre2sAY3trAHuEYwBzhGMAc3tjAGt7YwDGlFoAvYxaAGNzWgBSa1oAxpRSAK2MUgDGjEoA', 'vYxKAL2ESgC1hEoArYRKAIRzSgB7a0oAc2tKAGtrSgBaY0oAtYRCAK17QgCle0IApXM5AJxz', 'OQCcazkAjGMxAIRaMQBzWjEAa1oxAIRaKQB7ShAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA', 'AAAAAAAAAAAAAAAGFh4YLAYAAAAAAAAAAAAHGB4gIBYWBgAAAAAAAAAAFhgzQR45MixGMQAA', 'AAAAABQYTF0WbzplWQAAAABFVEgKFExdFG59eywWCwBAdHRJCgpLXRhxe3IvIiIDT2p0VAdh', 'fn5xbzplciAwFFNqanQ3BwoKChYYGB4gICxYanRqalRPWVRZRhMYHiAYTmlqdnZ2dnh5eX1G', 'FhgeFEVjaT1SVithKzg7WhMYGAsATmM9UjgwXDt2eFsIFgcAAAAAFDRDLUo-bnhZAAAAAAAA', 'AAgwRS1cO3Z2WgAAAAAAAAADUTZHbVJ0d0kAAAAAAAAAADFPY2pqZEgAAAAAAAAA__8AAP__', 'AAD__wAAsaEAAE5eAABOXgAA__4AAPv_AAD__wAA__8AAM3-AADw_wAA__8AAML-AAD__wAA', 'xf4=']
""" Return the data for the favicon image. """ return base64.urlsafe_b64decode(''.join(FAVICON_BASE64_DATA))
""" Extract the unique counter from the URL if it has one. Otherwise return null. """ pos = sp.rfind('%23') if pos != -1: return int(sp[(pos + 3):]) else: return None
""" Run NLTK Wordnet Browser Server.
:param port: The port number for the server to listen on, defaults to 8000 :type port: int
:param runBrowser: True to start a web browser and point it at the web server. :type runBrowser: bool """ # The webbrowser module is unpredictable, typically it blocks if it uses # a console web browser, and doesn't block if it uses a GUI webbrowser, # so we need to force it to have a clear correct behaviour. # # Normally the server should run for as long as the user wants. they # should idealy be able to control this from the UI by closing the # window or tab. Second best would be clicking a button to say # 'Shutdown' that first shutsdown the server and closes the window or # tab, or exits the text-mode browser. Both of these are unfreasable. # # The next best alternative is to start the server, have it close when # it receives SIGTERM (default), and run the browser as well. The user # may have to shutdown both programs. # # Since webbrowser may block, and the webserver will block, we must run # them in separate threads. # global server_mode, logfile server_mode = not runBrowser
# Setup logging. if logfilename: try: logfile = open(logfilename, "a", 1) # 1 means 'line buffering' except IOError as e: sys.stderr.write("Couldn't open %s for writing: %s", logfilename, e) sys.exit(1) else: logfile = None
# Compute URL and start web browser url = 'http://localhost:' + str(port) if runBrowser: server_ready = threading.Event() browser_thread = startBrowser(url, server_ready)
# Start the server. server = HTTPServer(('', port), MyServerHandler) if logfile: logfile.write( 'NLTK Wordnet browser server running serving: %s\n' % url) if runBrowser: server_ready.set()
try: server.serve_forever() except KeyboardInterrupt: pass
if runBrowser: browser_thread.join()
def run(): server_ready.wait() time.sleep(1) # Wait a little bit more, there's still the chance of # a race condition. webbrowser.open(url, new = 2, autoraise = 1) t = threading.Thread(target=run) t.start() return t
##################################################################### # Utilities #####################################################################
""" WordNet Browser Utilities.
This provides a backend to both wxbrowse and browserver.py. """
################################################################################ # # Main logic for wordnet browser. #
# This is wrapped inside a function since wn is only available if the # WordNet corpus is installed. return [ (wn.NOUN,'N','noun'), (wn.VERB,'V','verb'), (wn.ADJ,'J','adj'), (wn.ADV,'R','adv')]
""" This function returns the complete pos tuple for the partial pos tuple given to it. It attempts to match it against the first non-null component of the given pos tuple. """ if pos_tuple[0] == 's': pos_tuple = ('a', pos_tuple[1], pos_tuple[2]) for n,x in enumerate(pos_tuple): if x is not None: break for pt in _pos_tuples(): if pt[n] == pos_tuple[n]: return pt return None
def flattern(l): if l == []: return [] else: return l[0] + flattern(l[1:])
return flattern([func(l) for l in synset.lemmas if l.name == word])
node = orig_tree[0] children = orig_tree[1:] return (node, [rebuild_tree(t) for t in children])
""" Get synset relations data for a synset. Note that this doesn't yet support things such as full hyponym vs direct hyponym. """ if synset.pos == wn.NOUN: return ((HYPONYM, 'Hyponyms', synset.hyponyms()), (INSTANCE_HYPONYM , 'Instance hyponyms', synset.instance_hyponyms()), (HYPERNYM, 'Direct hypernyms', synset.hypernyms()), (INDIRECT_HYPERNYMS, 'Indirect hypernyms', rebuild_tree(synset.tree(lambda x: x.hypernyms()))[1]), # hypernyms', 'Sister terms', (INSTANCE_HYPERNYM , 'Instance hypernyms', synset.instance_hypernyms()), # (CLASS_REGIONAL, ['domain term region'], ), (PART_HOLONYM, 'Part holonyms', synset.part_holonyms()), (PART_MERONYM, 'Part meronyms', synset.part_meronyms()), (SUBSTANCE_HOLONYM, 'Substance holonyms', synset.substance_holonyms()), (SUBSTANCE_MERONYM, 'Substance meronyms', synset.substance_meronyms()), (MEMBER_HOLONYM, 'Member holonyms', synset.member_holonyms()), (MEMBER_MERONYM, 'Member meronyms', synset.member_meronyms()), (ATTRIBUTE, 'Attributes', synset.attributes()), (ANTONYM, "Antonyms", lemma_property(word, synset, lambda l: l.antonyms())), (DERIVATIONALLY_RELATED_FORM, "Derivationally related form", lemma_property(word, synset, lambda l: l.derivationally_related_forms()))) elif synset.pos == wn.VERB: return ((ANTONYM, 'Antonym', lemma_property(word, synset, lambda l: l.antonyms())), (HYPONYM, 'Hyponym', synset.hyponyms()), (HYPERNYM, 'Direct hypernyms', synset.hypernyms()), (INDIRECT_HYPERNYMS, 'Indirect hypernyms', rebuild_tree(synset.tree(lambda x: x.hypernyms()))[1]), (ENTAILMENT, 'Entailments', synset.entailments()), (CAUSE, 'Causes', synset.causes()), (ALSO_SEE, 'Also see', synset.also_sees()), (VERB_GROUP, 'Verb Groups', synset.verb_groups()), (DERIVATIONALLY_RELATED_FORM, "Derivationally related form", lemma_property(word, synset, lambda l: l.derivationally_related_forms()))) elif synset.pos == wn.ADJ or synset.pos == wn.ADJ_SAT: return ((ANTONYM, 'Antonym', lemma_property(word, synset, lambda l: l.antonyms())), (SIMILAR, 'Similar to', synset.similar_tos()), # Participle of verb - not supported by corpus (PERTAINYM, 'Pertainyms', lemma_property(word, synset, lambda l: l.pertainyms())), (ATTRIBUTE, 'Attributes', synset.attributes()), (ALSO_SEE, 'Also see', synset.also_sees())) elif synset.pos == wn.ADV: # This is weird. adverbs such as 'quick' and 'fast' don't seem # to have antonyms returned by the corpus.a return ((ANTONYM, 'Antonym', lemma_property(word, synset, lambda l: l.antonyms())),) # Derived from adjective - not supported by corpus else: raise TypeError("Unhandles synset POS type: " + str(synset.pos))
<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01//EN' 'http://www.w3.org/TR/html4/strict.dtd'> <html> <head> <meta name='generator' content= 'HTML Tidy for Windows (vers 14 February 2006), see www.w3.org'> <meta http-equiv='Content-Type' content= 'text/html; charset=us-ascii'> <title>NLTK Wordnet Browser display of: %s</title></head> <body bgcolor='#F5F5F5' text='#000000'> ''' </body> </html> '''
<h3>Search Help</h3> <ul><li>The display below the line is an example of the output the browser shows you when you enter a search word. The search word was <b>green</b>.</li> <li>The search result shows for different parts of speech the <b>synsets</b> i.e. different meanings for the word.</li> <li>All underlined texts are hypertext links. There are two types of links: word links and others. Clicking a word link carries out a search for the word in the Wordnet database.</li> <li>Clicking a link of the other type opens a display section of data attached to that link. Clicking that link a second time closes the section again.</li> <li>Clicking <u>S:</u> opens a section showing the relations for that synset. </li> <li>Clicking on a relation name opens a section that displays the associated synsets.</li> <li>Type a search word in the <b>Word</b> field and start the search by the <b>Enter/Return</b> key or click the <b>Search</b> button.</li> </ul> <hr width='100%'> '''
# HTML oriented functions
''' Return a HTML page of NLTK Browser format constructed from the word and body
:param word: The word that the body corresponds to :type word: str :param body: The HTML body corresponding to the word :type body: str :return: a HTML page for the word-body combination :rtype: str ''' return (html_header % word) + body + html_trailer
""" abbc = asterisks, breaks, bold, center """ return _center(_bold('<br>'*10 + '*'*10 + ' ' + txt + ' ' + '*'*10))
_ul(_li(_italic('(has full hyponym continuation)'))) + '\n'
""" The synset key is the unique name of the synset, this can be retrived via synset.name """ return wn.synset(synset_key)
''' Returns the HTML string for one synset or word
:param word: the current word :type word: str :param synset: a synset :type synset: synset :param synset_relations: information about which synset relations to display. :type synset_relations: dict(synset_key, set(relation_id)) :return: The HTML string built for this synset :rtype: str ''' if isinstance(synset, tuple): # It's a word raise NotImplementedError("word not supported by _collect_one_synset")
typ = 'S' pos_tuple = _pos_match((synset.pos, None, None)) assert pos_tuple is not None, "pos_tuple is null: synset.pos: %s" % synset.pos descr = pos_tuple[2] ref = copy.deepcopy(Reference(word, synset_relations)) ref.toggle_synset(synset) synset_label = typ + ";" if synset.name in synset_relations.keys(): synset_label = _bold(synset_label) s = '<li>%s (%s) ' % (make_lookup_link(ref, synset_label), descr) def format_lemma(w): w = w.replace('_', ' ') if w.lower() == word: return _bold(w) else: ref = Reference(w) return make_lookup_link(ref, w)
s += ', '.join([format_lemma(l.name) for l in synset.lemmas])
gl = " (%s) <i>%s</i> " % \ (synset.definition, "; ".join(["\"%s\"" % e for e in synset.examples])) return s + gl + _synset_relations(word, synset, synset_relations) + '</li>\n'
""" Return a HTML unordered list of synsets for the given word and part of speech. """ return '<ul>%s\n</ul>\n' % \ ''.join((_collect_one_synset(word, synset, synset_relations) for synset in wn.synsets(word, pos)))
''' Builds the HTML string for the relations of a synset
:param word: The current word :type word: str :param synset: The synset for which we're building the relations. :type synset: Synset :param synset_relations: synset keys and relation types for which to display relations. :type synset_relations: dict(synset_key, set(relation_type)) :return: The HTML for a synset's relations :rtype: str '''
if not synset.name in synset_relations.keys(): return "" ref = Reference(word, synset_relations)
def relation_html(r): if isinstance(r, Synset): return make_lookup_link(Reference(r.lemma_names[0]), r.lemma_names[0]) elif isinstance(r, Lemma): return relation_html(r.synset) elif isinstance(r, tuple): # It's probably a tuple containing a Synset and a list of # similar tuples. This forms a tree of synsets. return "%s\n<ul>%s</ul>\n" % \ (relation_html(r[0]), ''.join('<li>%s</li>\n' % relation_html(sr) for sr in r[1])) else: raise TypeError("r must be a synset, lemma or list, it was: type(r) = %s, r = %s" % (type(r), r))
def make_synset_html(db_name, disp_name, rels): synset_html = '<i>%s</i>\n' % \ make_lookup_link( copy.deepcopy(ref).toggle_synset_relation(synset, db_name).encode(), disp_name)
if db_name in ref.synset_relations[synset.name]: synset_html += '<ul>%s</ul>\n' % \ ''.join("<li>%s</li>\n" % relation_html(r) for r in rels)
return synset_html
html = '<ul>' + \ '\n'.join(("<li>%s</li>" % make_synset_html(*rel_data) for rel_data in get_relations_data(word, synset) if rel_data[2] != [])) + \ '</ul>'
return html
""" A reference to a page that may be generated by page_word """
""" Build a reference to a new page.
word is the word or words (separated by commas) for which to search for synsets of
synset_relations is a dictionary of synset keys to sets of synset relation identifaiers to unfold a list of synset relations for. """ self.word = word self.synset_relations = synset_relations
""" Encode this reference into a string to be used in a URL. """ # This uses a tuple rather than an object since the python # pickle representation is much smaller and there is no need # to represent the complete object. string = cPickle.dumps((self.word, self.synset_relations), -1) return base64.urlsafe_b64encode(string)
""" Toggle the display of the relations for the given synset and relation type.
This function will throw a KeyError if the synset is currently not being displayed. """ if relation in self.synset_relations[synset.name]: self.synset_relations[synset.name].remove(relation) else: self.synset_relations[synset.name].add(relation)
return self
""" Toggle displaying of the relation types for the given synset """ if synset.name in self.synset_relations.keys(): del self.synset_relations[synset.name] else: self.synset_relations[synset.name] = set()
return self
""" Decode a reference encoded with Reference.encode """ string = base64.urlsafe_b64decode(string) word, synset_relations = cPickle.loads(string) return Reference(word, synset_relations)
return '<a href="lookup_%s">%s</a>' % (ref.encode(), label)
""" Return a HTML page for the given word.
:param word: The currently active word :type word: str :return: A tuple (page,word), where page is the new current HTML page to be sent to the browser and word is the new current word :rtype: A tuple (str,str) """ return page_from_reference(Reference(word))
''' Returns a tuple of the HTML page built and the new current word
:param href: The hypertext reference to be solved :type href: str :return: A tuple (page,word), where page is the new current HTML page to be sent to the browser and word is the new current word :rtype: A tuple (str,str) ''' return page_from_reference(decode_reference(href))
''' Returns a tuple of the HTML page built and the new current word
:param href: The hypertext reference to be solved :type href: str :return: A tuple (page,word), where page is the new current HTML page to be sent to the browser and word is the new current word :rtype: A tuple (str,str) ''' word = href.word pos_forms = defaultdict(list) words = word.split(',') words = [w for w in [w.strip().lower().replace(' ', '_') for w in words] if w != ""] if len(words) == 0: # No words were found. return "", "Please specify a word to search for."
# This looks up multiple words at once. This is probably not # necessary and may lead to problems. for pos in [wn.NOUN, wn.VERB, wn.ADJ, wn.ADV]: form = wn.morphy(w, pos) if form and form not in pos_forms[pos]: pos_forms[pos].append(form) body = '' for pos,pos_str,name in _pos_tuples(): if pos in pos_forms: body += _hlev(3, name) + '\n' for w in pos_forms[pos]: # Not all words of exc files are in the database, skip # to the next word if a KeyError is raised. try: body += _collect_all_synsets(w, pos, href.synset_relations) except KeyError: pass if not body: body = "The word or words '%s' where not found in the dictonary." % word return body, word
##################################################################### # Static pages #####################################################################
""" Return a static HTML page from the path given. """ if path == "index_2.html": return get_static_index_page(False) elif path == "index.html": return get_static_index_page(True) elif path == "NLTK Wordnet Browser Database Info.html": return "Display of Wordnet Database Statistics is not supported" elif path == "upper_2.html": return get_static_upper_page(False) elif path == "upper.html": return get_static_upper_page(True) elif path == "web_help.html": return get_static_web_help_page() elif path == "wx_help.html": return get_static_wx_help_page() else: return "Internal error: Path for static page '%s' is unknown" % path
f = open(path) page = f.read() f.close() return page
""" Return the static web help page. """ return \ """ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <!-- Natural Language Toolkit: Wordnet Interface: Graphical Wordnet Browser Copyright (C) 2001-2012 NLTK Project Author: Jussi Salmela <jtsalmela@users.sourceforge.net> URL: <http://www.nltk.org/> For license information, see LICENSE.TXT --> <head> <meta http-equiv='Content-Type' content='text/html; charset=us-ascii'> <title>NLTK Wordnet Browser display of: * Help *</title> </head> <body bgcolor='#F5F5F5' text='#000000'> <h2>NLTK Wordnet Browser Help</h2> <p>The NLTK Wordnet Browser is a tool to use in browsing the Wordnet database. It tries to behave like the Wordnet project's web browser but the difference is that the NLTK Wordnet Browser uses a local Wordnet database. <p><b>You are using the Javascript client part of the NLTK Wordnet BrowseServer.</b> We assume your browser is in tab sheets enabled mode.</p> <p>For background information on Wordnet, see the Wordnet project home page: <a href="http://wordnet.princeton.edu/"><b> http://wordnet.princeton.edu/</b></a>. For more information on the NLTK project, see the project home: <a href="http://nltk.sourceforge.net/"><b>http://nltk.sourceforge.net/</b></a>. To get an idea of what the Wordnet version used by this browser includes choose <b>Show Database Info</b> from the <b>View</b> submenu.</p> <h3>Word search</h3> <p>The word to be searched is typed into the <b>New Word</b> field and the search started with Enter or by clicking the <b>Search</b> button. There is no uppercase/lowercase distinction: the search word is transformed to lowercase before the search.</p> <p>In addition, the word does not have to be in base form. The browser tries to find the possible base form(s) by making certain morphological substitutions. Typing <b>fLIeS</b> as an obscure example gives one <a href="MfLIeS">this</a>. Click the previous link to see what this kind of search looks like and then come back to this page by using the <b>Alt+LeftArrow</b> key combination.</p> <p>The result of a search is a display of one or more <b>synsets</b> for every part of speech in which a form of the search word was found to occur. A synset is a set of words having the same sense or meaning. Each word in a synset that is underlined is a hyperlink which can be clicked to trigger an automatic search for that word.</p> <p>Every synset has a hyperlink <b>S:</b> at the start of its display line. Clicking that symbol shows you the name of every <b>relation</b> that this synset is part of. Every relation name is a hyperlink that opens up a display for that relation. Clicking it another time closes the display again. Clicking another relation name on a line that has an opened relation closes the open relation and opens the clicked relation.</p> <p>It is also possible to give two or more words or collocations to be searched at the same time separating them with a comma like this <a href="Mcheer up,clear up">cheer up,clear up</a>, for example. Click the previous link to see what this kind of search looks like and then come back to this page by using the <b>Alt+LeftArrow</b> key combination. As you could see the search result includes the synsets found in the same order than the forms were given in the search field.</p> <p> There are also word level (lexical) relations recorded in the Wordnet database. Opening this kind of relation displays lines with a hyperlink <b>W:</b> at their beginning. Clicking this link shows more info on the word in question.</p> <h3>The Buttons</h3> <p>The <b>Search</b> and <b>Help</b> buttons need no more explanation. </p> <p>The <b>Show Database Info</b> button shows a collection of Wordnet database statistics.</p> <p>The <b>Shutdown the Server</b> button is shown for the first client of the BrowServer program i.e. for the client that is automatically launched when the BrowServer is started but not for the succeeding clients in order to protect the server from accidental shutdowns. </p></body> </html> """
""" Get the static welcome page. """ return \ """ <h3>Search Help</h3> <ul><li>The display below the line is an example of the output the browser shows you when you enter a search word. The search word was <b>green</b>.</li> <li>The search result shows for different parts of speech the <b>synsets</b> i.e. different meanings for the word.</li> <li>All underlined texts are hypertext links. There are two types of links: word links and others. Clicking a word link carries out a search for the word in the Wordnet database.</li> <li>Clicking a link of the other type opens a display section of data attached to that link. Clicking that link a second time closes the section again.</li> <li>Clicking <u>S:</u> opens a section showing the relations for that synset.</li> <li>Clicking on a relation name opens a section that displays the associated synsets.</li> <li>Type a search word in the <b>Next Word</b> field and start the search by the <b>Enter/Return</b> key or click the <b>Search</b> button.</li> </ul> """
""" Get the static index page. """ template = \ """ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"> <HTML> <!-- Natural Language Toolkit: Wordnet Interface: Graphical Wordnet Browser Copyright (C) 2001-2012 NLTK Project Author: Jussi Salmela <jtsalmela@users.sourceforge.net> URL: <http://www.nltk.org/> For license information, see LICENSE.TXT --> <HEAD> <TITLE>NLTK Wordnet Browser</TITLE> </HEAD>
<frameset rows="7%%,93%%"> <frame src="%s" name="header"> <frame src="start_page" name="body"> </frameset> </HTML> """ if with_shutdown: upper_link = "upper.html" else: upper_link = "upper_2.html"
return template % upper_link
""" Return the upper frame page,
If with_shutdown is True then a 'shutdown' button is also provided to shutdown the server. """ template = \ """ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <!-- Natural Language Toolkit: Wordnet Interface: Graphical Wordnet Browser Copyright (C) 2001-2012 NLTK Project Author: Jussi Salmela <jtsalmela@users.sourceforge.net> URL: <http://www.nltk.org/> For license information, see LICENSE.TXT --> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title>Untitled Document</title> </head> <body> <form method="GET" action="search" target="body"> Current Word: <input type="text" id="currentWord" size="10" disabled> Next Word: <input type="text" id="nextWord" name="nextWord" size="10"> <input name="searchButton" type="submit" value="Search"> </form> <a target="body" href="web_help.html">Help</a> %s
</body> </html> """ if with_shutdown: shutdown_link = "<a href=\"SHUTDOWN THE SERVER\">Shutdown</a>" else: shutdown_link = ""
return template % shutdown_link
""" Display the command line help message. """ print(__doc__)
# Parse and interpret options. (opts, _) = getopt.getopt(argv[1:], "l:p:sh", ["logfile=", "port=", "server-mode", "help"]) port = 8000 server_mode = False help_mode = False logfilename = None for (opt, value) in opts: if (opt == "-l") or (opt == "--logfile"): logfilename = str(value) elif (opt == "-p") or (opt == "--port"): port = int(value) elif (opt == "-s") or (opt == "--server-mode"): server_mode = True elif (opt == "-h") or (opt == "--help"): help_mode = True
if help_mode: usage() else: wnb(port, not server_mode, logfilename)
app()
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