mirror of https://github.com/explosion/spaCy.git
99 lines
2.9 KiB
Cython
99 lines
2.9 KiB
Cython
'''Serve pointers to Lexeme structs, given strings. Maintain a reverse index,
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so that strings can be retrieved from hashes. Use 64-bit hash values and
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boldly assume no collisions.
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'''
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from __future__ import unicode_literals
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from libc.stdlib cimport malloc, calloc, free
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from libc.stdint cimport uint64_t
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cimport spacy
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import re
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# List of contractions adapted from Robert MacIntyre's tokenizer.
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CONTRACTIONS2 = [re.compile(r"(?i)\b(can)(not)\b"),
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re.compile(r"(?i)\b(d)('ye)\b"),
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re.compile(r"(?i)\b(gim)(me)\b"),
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re.compile(r"(?i)\b(gon)(na)\b"),
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re.compile(r"(?i)\b(got)(ta)\b"),
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re.compile(r"(?i)\b(lem)(me)\b"),
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re.compile(r"(?i)\b(mor)('n)\b"),
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re.compile(r"(?i)\b(wan)(na) ")]
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CONTRACTIONS3 = [re.compile(r"(?i) ('t)(is)\b"),
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re.compile(r"(?i) ('t)(was)\b")]
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CONTRACTIONS4 = [re.compile(r"(?i)\b(whad)(dd)(ya)\b"),
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re.compile(r"(?i)\b(wha)(t)(cha)\b")]
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def nltk_regex_tokenize(text):
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# Implementation taken from NLTK 3.0, based on tokenizer.sed
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#starting quotes
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text = re.sub(r'^\"', r'``', text)
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text = re.sub(r'(``)', r' \1 ', text)
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text = re.sub(r'([ (\[{<])"', r'\1 `` ', text)
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#punctuation
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text = re.sub(r'([:,])([^\d])', r' \1 \2', text)
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text = re.sub(r'\.\.\.', r' ... ', text)
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text = re.sub(r'[;@#$%&]', r' \g<0> ', text)
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text = re.sub(r'([^\.])(\.)([\]\)}>"\']*)\s*$', r'\1 \2\3 ', text)
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text = re.sub(r'[?!]', r' \g<0> ', text)
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text = re.sub(r"([^'])' ", r"\1 ' ", text)
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#parens, brackets, etc.
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text = re.sub(r'[\]\[\(\)\{\}\<\>]', r' \g<0> ', text)
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text = re.sub(r'--', r' -- ', text)
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#add extra space to make things easier
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text = " " + text + " "
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#ending quotes
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text = re.sub(r'"', " '' ", text)
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text = re.sub(r'(\S)(\'\')', r'\1 \2 ', text)
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text = re.sub(r"([^' ])('[sS]|'[mM]|'[dD]|') ", r"\1 \2 ", text)
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text = re.sub(r"([^' ])('ll|'LL|'re|'RE|'ve|'VE|n't|N'T) ", r"\1 \2 ",
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text)
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for regexp in CONTRACTIONS2:
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text = regexp.sub(r' \1 \2 ', text)
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for regexp in CONTRACTIONS3:
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text = regexp.sub(r' \1 \2 ', text)
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# We are not using CONTRACTIONS4 since
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# they are also commented out in the SED scripts
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# for regexp in self.CONTRACTIONS4:
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# text = regexp.sub(r' \1 \2 \3 ', text)
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return text.split()
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cdef class PennTreebank3(Language):
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cpdef list find_substrings(self, unicode chunk):
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strings = nltk_regex_tokenize(chunk)
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if strings[-1] == '.':
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strings.pop()
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strings[-1] += '.'
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assert strings
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return strings
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cdef PennTreebank3 PTB3 = PennTreebank3('ptb3')
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cpdef list tokenize(unicode string):
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return PTB3.tokenize(string)
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cpdef Word lookup(unicode string):
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return PTB3.lookup(string)
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cpdef unicode unhash(StringHash hash_value):
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return PTB3.unhash(hash_value)
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