| #-------------------------------------------------------------------- |
| # Copyright (c) 1999-2004, International Business Machines |
| # Corporation and others. All Rights Reserved. |
| #-------------------------------------------------------------------- |
| |
| # According to the pinyin definitions I've been able to find: |
| # 'a', 'e' are the preferred bases |
| # otherwise 'o' |
| # otherwise last vowel |
| |
| # The trailing form of syllables are the following: |
| # "a", "ai", "ao", "an", "ang", |
| # "o", "ou", "ong", |
| # "e", "ei", "er", "en", "eng", |
| # "i", "ia", "iao", "ie", "iu", "ian", "in", "iang", "ing", "iong", |
| # "u", "ua", "uo", "uai", "ui", "uan", "un", "uang", "ueng", |
| # "ü", "üe", "üan", "ün" |
| # so the letters the tone will 'hop' are: |
| |
| ::NFD (NFC); |
| $tone = [\u0304\u0301\u030C\u0300\u0306] ; |
| |
| # Move the tone to the end of a syllable, and convert to number |
| e {($tone) r} > r &tone-digit($1); |
| ($tone) ( [i o n u {o n} {n g}]) > $2 &tone-digit($1); |
| ($tone) > &tone-digit($1); |
| |
| # The following backs up until it finds the right vowel, then deposits the tone |
| |
| $vowel = [aAeEiIoOuUüÜ]; |
| $consonant = [[a-z A-Z] - [$vowel]]; |
| $digit = [1-5]; |
| $1 &digit-tone($3) $2 < ([aAeE]) ($vowel* $consonant*) ($digit); |
| $1 &digit-tone($3) $2 < ([oO]) ([$vowel-[aeAE]]* $consonant*) ($digit); |
| $1 &digit-tone($3) $2 < ($vowel) ($consonant*) ($digit); |
| &digit-tone($1) < [:letter:] {($digit)}; |
| |
| ::NFC (NFD); |
| |
| |
| |
