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Support Americanist Phonetic Notation 

OpenType language system tag: `APPH`
https://www.microsoft.com/typography/otspec/languagetags.htm

IETF BCP47 variant tag: `fonnapa`
http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
This commit is contained in:
Sascha Brawer 2016-08-18 12:48:38 +02:00
parent bd1aac9c00
commit e7ecbba2cc
2 changed files with 18 additions and 2 deletions
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14
src/hb-ot-tag.cc
View File

@ -892,13 +892,21 @@ hb_ot_tag_from_language (hb_language_t language)
}
/*
* The International Phonetic Alphabet is a variant tag in BCP-47,
* which can be applied to any language.
* "fonipa" is a variant tag in BCP-47, meaning the International Phonetic Alphabet.
* It can be applied to any language.
*/
if (strstr (lang_str, "-fonipa")) {
return HB_TAG('I','P','P','H'); /* Phonetic transcription—IPA conventions */
}
/*
* "fonnapa" is a variant tag in BCP-47, meaning the North American Phonetic Alphabet
* also known as Americanist Phonetic Notation. It can be applied to any language.
*/
if (strstr (lang_str, "-fonnapa")) {
return HB_TAG('A','P','P','H'); /* Phonetic transcription—Americanist conventions */
}
/* Find a language matching in the first component */
{
const LangTag *lang_tag;
@ -970,6 +978,8 @@ hb_ot_tag_to_language (hb_tag_t tag)
/* struct LangTag has only room for 3-letter language tags. */
switch (tag) {
case HB_TAG('A','P','P','H'): /* Phonetic transcription—Americanist conventions */
return hb_language_from_string ("und-fonnapa", -1);
case HB_TAG('I','P','P','H'): /* Phonetic transcription—IPA conventions */
return hb_language_from_string ("und-fonipa", -1);
}

6
test/api/test-ot-tag.c
View File

@ -232,6 +232,12 @@ test_ot_tag_language (void)
test_tag_from_language ("IPPH", "zh-fonipa");
test_tag_to_language ("IPPH", "und-fonipa");
/* North American Phonetic Alphabet (Americanist Phonetic Notation) */
test_tag_from_language ("APPH", "en-fonnapa");
test_tag_from_language ("APPH", "chr-fonnapa");
test_tag_from_language ("APPH", "und-fonnapa");
test_tag_to_language ("APPH", "und-fonnapa");
/* Test that x-hbot overrides the base language */
test_tag_from_language ("ABC", "fa-x-hbotabc-zxc");
test_tag_from_language ("ABC", "fa-ir-x-hbotabc-zxc");