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- """ from https://github.com/keithito/tacotron """
-
- import inflect
- import re
-
-
- _inflect = inflect.engine()
- _comma_number_re = re.compile(r'([0-9][0-9\,]+[0-9])')
- _decimal_number_re = re.compile(r'([0-9]+\.[0-9]+)')
- _pounds_re = re.compile(r'£([0-9\,]*[0-9]+)')
- _dollars_re = re.compile(r'\$([0-9\.\,]*[0-9]+)')
- _ordinal_re = re.compile(r'[0-9]+(st|nd|rd|th)')
- _number_re = re.compile(r'[0-9]+')
-
-
- def _remove_commas(m):
- return m.group(1).replace(',', '')
-
-
- def _expand_decimal_point(m):
- return m.group(1).replace('.', ' point ')
-
-
- def _expand_dollars(m):
- match = m.group(1)
- parts = match.split('.')
- if len(parts) > 2:
- return match + ' dollars' # Unexpected format
- dollars = int(parts[0]) if parts[0] else 0
- cents = int(parts[1]) if len(parts) > 1 and parts[1] else 0
- if dollars and cents:
- dollar_unit = 'dollar' if dollars == 1 else 'dollars'
- cent_unit = 'cent' if cents == 1 else 'cents'
- return '%s %s, %s %s' % (dollars, dollar_unit, cents, cent_unit)
- elif dollars:
- dollar_unit = 'dollar' if dollars == 1 else 'dollars'
- return '%s %s' % (dollars, dollar_unit)
- elif cents:
- cent_unit = 'cent' if cents == 1 else 'cents'
- return '%s %s' % (cents, cent_unit)
- else:
- return 'zero dollars'
-
-
- def _expand_ordinal(m):
- return _inflect.number_to_words(m.group(0))
-
-
- def _expand_number(m):
- num = int(m.group(0))
- if num > 1000 and num < 3000:
- if num == 2000:
- return 'two thousand'
- elif num > 2000 and num < 2010:
- return 'two thousand ' + _inflect.number_to_words(num % 100)
- elif num % 100 == 0:
- return _inflect.number_to_words(num // 100) + ' hundred'
- else:
- return _inflect.number_to_words(num, andword='', zero='oh', group=2).replace(', ', ' ')
- else:
- return _inflect.number_to_words(num, andword='')
-
-
- def normalize_numbers(text):
- text = re.sub(_comma_number_re, _remove_commas, text)
- text = re.sub(_pounds_re, r'\1 pounds', text)
- text = re.sub(_dollars_re, _expand_dollars, text)
- text = re.sub(_decimal_number_re, _expand_decimal_point, text)
- text = re.sub(_ordinal_re, _expand_ordinal, text)
- text = re.sub(_number_re, _expand_number, text)
- return text
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