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get_tml.py
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get_tml.py
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import os
import codecs
import xml.dom.minidom
import re
from timex import *
from copy import *
tml_dir = 'timebank_1.2/data/timeml'
whitespace_re = re.compile(r'^\s+$')
word_re = re.compile(r'[^\-\s]+[^\'\"\-\.,;:!?\s]')
abbrev_re = re.compile(r'([\.A-Z]+\.)\s[a-z]')
quot_re = re.compile(r'(\'\')|(\')|(``)|(`)|(\")')
sent_end_re = re.compile(r'([\.\?!])\s[A-Z]', re.S)
class TMLFile(object):
def __init__(self, path):
self.path = path
time_ml = xml.dom.minidom.parse(path).childNodes[0]
self.sents = sentence_tokenize(flatten(map(word_tokenize,
expand(time_ml))))
self.timexes = []
self.creation = None
is_timex3 = lambda elt: isinstance(elt, xml.dom.minidom.Element) and \
elt.nodeName == 'TIMEX3'
for i in range(len(self.sents)):
for j in range(len(self.sents[i])):
token = self.sents[i][j]
if is_timex3(token): # stopped here
timex = TimexTag(token)
self.sents[i][j] = timex
if timex['functionInDocument'] and \
timex['functionInDocument'] != 'NONE':
self.creation = timex
else:
self.timexes.append((timex['tid'], (i, j)))
def __str__(self):
return 'TML File : %s' % self.name
def __getitem__(self, key):
"""Returns a sentence if key is an int, or a location tuple
if key is a tid."""
if isinstance(key, int):
if key not in range(len(self.sentences)):
raise KeyError('no such sentence')
return self.sentences[key]
elif isinstance(key, basestring) and key[0] == 't':
for (tid, loc_tup) in self.timexes:
if key == tid: return loc_tup
raise KeyError('tid not found')
raise KeyError('invalid key format')
class XMLTag(object):
def __init__(self, elt):
assert isinstance(elt, xml.dom.minidom.Element)
self.element = elt
def __str__(self):
return '<%s %s />' % (self.element.nodeName,
self.element.childNodes[0].data or 'None')
def __getitem__(self, key):
if self.element.hasAttribute(key):
return self.element.getAttribute(key)
class TimexTag(XMLTag): pass
class EventTag(XMLTag): pass
class MakeInstanceTag(XMLTag): pass
class Quotation(list):
def __str__(self):
return 'Quotation(%s)' % super(Quotation, self).__str__()
def __repr__(self):
return 'Quotation(%s)' % super(Quotation, self).__repr__()
def get_timex(doc, tid):
if tid == doc.creation['tid']:
return doc.creation
for timex in doc.timexes:
if tid == timex[0]:
x, y = timex[1]
return doc.sents[x][y]
return None
def timex_num(doc, num):
x, y = doc.timexes[num][1]
return doc.sentences[x][y]
def word_tokenize(elt):
if not isinstance(elt, basestring): return [elt]
i = 0
tokens = []
while i < len(elt):
if elt[i] in [' ', '\n']: i += 1
else:
matched = False
for match, gr in zip(map(lambda x: x.match(elt, i),
[quot_re, word_re,
sent_end_re, abbrev_re]),
(0,0,1,1)):
if match:
i += len(match.group(gr))
tokens.append(match.group(gr))
matched = True
break
if not matched:
tokens.append(elt[i])
i += 1
return tokens
def do_recursive_thing(node, base_case,
thing_to_do,
dont_do_it=lambda x: False):
if base_case(node):
return [thing_to_do(node)]
out = []
for child in node.childNodes:
if dont_do_it(child):
out.append(child)
else:
out.extend(do_recursive_thing(child, base_case,
thing_to_do,
dont_do_it))
return out
def expand(node, leave_elt=lambda elt: elt.nodeName == 'TIMEX3',
is_text=lambda elt: elt.nodeName == '#text' and \
not whitespace_re.match(elt.data)):
return do_recursive_thing(node, is_text, lambda x: x.data, leave_elt)
def flatten(list_of_lists):
out = []
for l in list_of_lists:
if isinstance(l, list):
out.extend(flatten(l))
else:
out.append(l)
return out
def sentence_tokenize(tokens):
sents = []
this_sent = []
sent_end_punc = ['?', '.', '!']
sent_end = lambda j: tokens[j] in sent_end_punc and \
j > 0 and tokens[j-1] not in sent_end_punc and \
j < len(tokens)-1 and \
isinstance(tokens[j+1], basestring) and \
tokens[j+1].istitle()
# If two single quotation marks are not tokenized together, or you have
# an open quotation that never closes, strange things may happen.
quot_begin = ['``', '\"']
quot_end = ['\"', '\'\'']
i = 0
while i < len(tokens):
if tokens[i] in quot_begin:
if this_sent:
sents.append(this_sent)
this_sent = []
quotation = []
i += 1
while i < len(tokens) and not tokens[i] in quot_end:
quotation.append(tokens[i])
i += 1
sents.append(Quotation(quotation))
i += 1
else:
if sent_end(i):
sents.append(this_sent + [tokens[i]])
this_sent = []
else:
this_sent.append(tokens[i])
i += 1
if this_sent: sents.append(this_sent)
return sents
path = tml_dir + '/AP900815-0044.tml'
time_ml = xml.dom.minidom.parse(path).childNodes[0]
test = expand(time_ml)
sents = sentence_tokenize(flatten(map(word_tokenize, expand(time_ml))))