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|Pack pinyin -- prolog/pinyin.pl|
This module implements a grammar that parses and generates words written in Hanyu Pinyin, the standard romanization system for Mandarin Chinese. It also provides a utility to convert whole texts between diacritics and numbers for writing tones.
Maximal substrings of Pinyin letters, the numbers 1-4 as well as the
- are converted if they can be parsed as
lower-case, capitalized or all-caps Pinyin words in the input format,
everything else is left alone. Case is preserved.
The assumed input format is diacritics if Num is variable, numbers otherwise.
?- set_prolog_flag(double_quotes, codes). true. ?- num_dia("Wo3 xian4zai4 dui4 jing1ju4 hen3 gan3 xing4qu4.", | Codes), atom_codes(Atom, Codes). Codes = [87, 466, 32, 120, 105, 224, 110, 122, 224|...], Atom = 'Wǒ xiànzài duì jīngjù hěn gǎn xìngqù.'. ?- num_dia(Codes, "Nǐ ne?"), atom_codes(Atom, Codes). Codes = [78, 105, 51, 32, 110, 101, 63], Atom = 'Ni3 ne?'.
Morphs is a list of "morphs" (not in the strictest linguistic sense) that make up the word. They take one of three forms:
Finalare atoms. The final takes the "underlying" form, which may be different from the written form.
Toneis one of the integers from
r(for the erhuayin suffix)
-(for word-internal hyphens)
ND is either
dia, depending on how tones are represented
(numbers or diacritics).
The grammar implements the following tricky aspects of Hanyu Pinyin:
The following aspects are currently not supported:
?- set_prolog_flag(double_quotes, codes). true. ?- phrase(word([n-ü-3, ''-er-2], ND), Codes), atom_codes(Atom, Codes). ND = dia, Codes = [110, 474, 39, 233, 114], Atom = 'nǚ\'ér' ; ND = num, Codes = [110, 252, 51, 39, 101, 114, 50], Atom = 'nü3\'er2' ; false. ?- phrase(word(Morphs, ND), "yìjué"). Morphs = [''-i-4, j-üe-2], ND = dia ; false.