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