def tone_marks():
"""Keep tone-modifying punctuation by matching following character.
Assumes the `tone_marks` pre-processor was run for cases where there might
not be any space after a tone-modifying punctuation mark.
"""
return RegexBuilder(pattern_args=symbols.TONE_MARKS,
pattern_func=lambda x: u"(?<={}).".format(x)).regex
def legacy_all_punctuation(
): # pragma: no cover b/c tested but Coveralls: ¯\_(ツ)_/¯
"""Match all punctuation.
Use as only tokenizer case to mimic gTTS 1.x tokenization.
"""
punc = symbols.ALL_PUNC
return RegexBuilder(pattern_args=punc,
pattern_func=lambda x: u"{}".format(x)).regex
def colon():
"""Colon case.
Match a colon ":" only if not preceeded by a digit.
Mainly to prevent a cut in the middle of time notations e.g. 10:01
"""
return RegexBuilder(pattern_args=symbols.COLON,
pattern_func=lambda x: r"(?<!\d){}".format(x)).regex
def other_punctuation():
"""Match other punctuation.
Match other punctuation to split on; punctuation that naturally
inserts a break in speech.
"""
punc = ''.join((set(symbols.ALL_PUNC) - set(symbols.TONE_MARKS) -
set(symbols.PERIOD_COMMA)))
return RegexBuilder(pattern_args=punc,
pattern_func=lambda x: u"{}".format(x)).regex
def period_comma():
"""Period and comma case.
Match if not preceded by ".<letter>" and only if followed by space.
Won't cut in the middle/after dotted abbreviations; won't cut numbers.
Note:
Won't match if a dotted abbreviation ends a sentence.
Note:
Won't match the end of a sentence if not followed by a space.
"""
return RegexBuilder(
pattern_args=symbols.PERIOD_COMMA,
pattern_func=lambda x: u"(?<!\.[a-z]){} ".format(x)).regex