harfbuzz/test/api/test-ot-tag.c

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/*
* Copyright © 2011 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#include "hb-test.h"
#include <hb-ot.h>
/* Unit tests for hb-ot-tag.h */
/* https://docs.microsoft.com/en-us/typography/opentype/spec/scripttags */
static void
test_simple_tags (const char *s, hb_script_t script)
{
hb_script_t tag;
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unsigned int count = 2;
hb_tag_t t[2];
g_test_message ("Testing script %c%c%c%c: tag %s", HB_UNTAG (hb_script_to_iso15924_tag (script)), s);
tag = hb_tag_from_string (s, -1);
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hb_ot_tags_from_script_and_language (script,
HB_LANGUAGE_INVALID,
&count, t, NULL, NULL);
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if (count)
g_assert_cmphex (t[0], ==, tag);
else
g_assert_cmphex (HB_TAG_CHAR4 ("DFLT"), ==, tag);
g_assert_cmphex (hb_ot_tag_to_script (tag), ==, script);
}
static void
test_script_tags_from_language (const char *s, const char *lang_s, hb_script_t script)
{
hb_script_t tag;
unsigned int count = 1;
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hb_tag_t t;
g_test_message ("Testing script %c%c%c%c: script tag %s, language tag %s", HB_UNTAG (hb_script_to_iso15924_tag (script)), s, lang_s);
tag = hb_tag_from_string (s, -1);
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hb_ot_tags_from_script_and_language (script, hb_language_from_string (lang_s, -1), &count, &t, NULL, NULL);
if (count != 0)
{
g_assert_cmpuint (count, ==, 1);
g_assert_cmphex (t, ==, tag);
}
}
static void
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test_indic_tags (const char *s1, const char *s2, const char *s3, hb_script_t script)
{
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hb_script_t tag1, tag2, tag3;
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hb_tag_t t[3];
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unsigned int count = 3;
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g_test_message ("Testing script %c%c%c%c: USE tag %s, new tag %s, old tag %s", HB_UNTAG (hb_script_to_iso15924_tag (script)), s1, s2, s3);
tag1 = hb_tag_from_string (s1, -1);
tag2 = hb_tag_from_string (s2, -1);
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tag3 = hb_tag_from_string (s3, -1);
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hb_ot_tags_from_script_and_language (script,
HB_LANGUAGE_INVALID,
&count, t, NULL, NULL);
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g_assert_cmpuint (count, ==, 3);
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g_assert_cmphex (t[0], ==, tag1);
g_assert_cmphex (t[1], ==, tag2);
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g_assert_cmphex (t[2], ==, tag3);
g_assert_cmphex (hb_ot_tag_to_script (tag1), ==, script);
g_assert_cmphex (hb_ot_tag_to_script (tag2), ==, script);
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g_assert_cmphex (hb_ot_tag_to_script (tag3), ==, script);
}
static void
test_ot_tag_script_degenerate (void)
{
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hb_tag_t t[2];
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unsigned int count = 2;
g_assert_cmphex (HB_TAG_CHAR4 ("DFLT"), ==, HB_OT_TAG_DEFAULT_SCRIPT);
/* HIRAGANA and KATAKANA both map to 'kana' */
test_simple_tags ("kana", HB_SCRIPT_KATAKANA);
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hb_ot_tags_from_script_and_language (HB_SCRIPT_HIRAGANA,
HB_LANGUAGE_INVALID,
&count, t, NULL, NULL);
g_assert_cmpuint (count, ==, 1);
g_assert_cmphex (t[0], ==, HB_TAG_CHAR4 ("kana"));
test_simple_tags ("DFLT", HB_SCRIPT_INVALID);
/* Spaces are replaced */
g_assert_cmphex (hb_ot_tag_to_script (HB_TAG_CHAR4 ("be ")), ==, hb_script_from_string ("Beee", -1));
}
static void
test_ot_tag_script_simple (void)
{
/* Arbitrary non-existent script */
test_simple_tags ("wwyz", hb_script_from_string ("wWyZ", -1));
/* These we don't really care about */
test_simple_tags ("zyyy", HB_SCRIPT_COMMON);
test_simple_tags ("zinh", HB_SCRIPT_INHERITED);
test_simple_tags ("zzzz", HB_SCRIPT_UNKNOWN);
test_simple_tags ("arab", HB_SCRIPT_ARABIC);
test_simple_tags ("copt", HB_SCRIPT_COPTIC);
test_simple_tags ("kana", HB_SCRIPT_KATAKANA);
test_simple_tags ("latn", HB_SCRIPT_LATIN);
/* These are trickier since their OT script tags have space. */
test_simple_tags ("lao ", HB_SCRIPT_LAO);
test_simple_tags ("yi ", HB_SCRIPT_YI);
/* Unicode-5.0 additions */
test_simple_tags ("nko ", HB_SCRIPT_NKO);
/* Unicode-5.1 additions */
test_simple_tags ("vai ", HB_SCRIPT_VAI);
/* https://docs.microsoft.com/en-us/typography/opentype/spec/scripttags */
/* Unicode-5.2 additions */
test_simple_tags ("mtei", HB_SCRIPT_MEETEI_MAYEK);
/* Unicode-6.0 additions */
test_simple_tags ("mand", HB_SCRIPT_MANDAIC);
}
static void
test_ot_tag_script_from_language (void)
{
test_script_tags_from_language (NULL, NULL, HB_SCRIPT_INVALID);
test_script_tags_from_language (NULL, "en", HB_SCRIPT_INVALID);
test_script_tags_from_language ("copt", "en", HB_SCRIPT_COPTIC);
test_script_tags_from_language (NULL, "x-hbsc", HB_SCRIPT_INVALID);
test_script_tags_from_language ("copt", "x-hbsc", HB_SCRIPT_COPTIC);
test_script_tags_from_language (NULL, "x-hbsc-", HB_SCRIPT_INVALID);
test_script_tags_from_language (NULL, "x-hbsc-1", HB_SCRIPT_INVALID);
test_script_tags_from_language (NULL, "x-hbsc-1a", HB_SCRIPT_INVALID);
test_script_tags_from_language (NULL, "x-hbsc-1a2b3c4x", HB_SCRIPT_INVALID);
test_script_tags_from_language ("2lon", "x-hbsc-326c6f6e67", HB_SCRIPT_INVALID);
test_script_tags_from_language ("abc ", "x-hbscabc", HB_SCRIPT_INVALID);
test_script_tags_from_language ("deva", "x-hbscdeva", HB_SCRIPT_INVALID);
test_script_tags_from_language ("dev2", "x-hbscdev2", HB_SCRIPT_INVALID);
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test_script_tags_from_language ("dev3", "x-hbscdev3", HB_SCRIPT_INVALID);
test_script_tags_from_language ("dev3", "x-hbsc-64657633", HB_SCRIPT_INVALID);
test_script_tags_from_language ("copt", "x-hbotpap0-hbsccopt", HB_SCRIPT_INVALID);
test_script_tags_from_language (NULL, "en-x-hbsc", HB_SCRIPT_INVALID);
test_script_tags_from_language ("copt", "en-x-hbsc", HB_SCRIPT_COPTIC);
test_script_tags_from_language ("abc ", "en-x-hbscabc", HB_SCRIPT_INVALID);
test_script_tags_from_language ("deva", "en-x-hbscdeva", HB_SCRIPT_INVALID);
test_script_tags_from_language ("dev2", "en-x-hbscdev2", HB_SCRIPT_INVALID);
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test_script_tags_from_language ("dev3", "en-x-hbscdev3", HB_SCRIPT_INVALID);
test_script_tags_from_language ("dev3", "en-x-hbsc-64657633", HB_SCRIPT_INVALID);
test_script_tags_from_language ("copt", "en-x-hbotpap0-hbsccopt", HB_SCRIPT_INVALID);
}
static void
test_ot_tag_script_indic (void)
{
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test_indic_tags ("bng3", "bng2", "beng", HB_SCRIPT_BENGALI);
test_indic_tags ("dev3", "dev2", "deva", HB_SCRIPT_DEVANAGARI);
test_indic_tags ("gjr3", "gjr2", "gujr", HB_SCRIPT_GUJARATI);
test_indic_tags ("gur3", "gur2", "guru", HB_SCRIPT_GURMUKHI);
test_indic_tags ("knd3", "knd2", "knda", HB_SCRIPT_KANNADA);
test_indic_tags ("mlm3", "mlm2", "mlym", HB_SCRIPT_MALAYALAM);
test_indic_tags ("ory3", "ory2", "orya", HB_SCRIPT_ORIYA);
test_indic_tags ("tml3", "tml2", "taml", HB_SCRIPT_TAMIL);
test_indic_tags ("tel3", "tel2", "telu", HB_SCRIPT_TELUGU);
}
/* https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags */
static void
test_language_two_way (const char *tag_s, const char *lang_s)
{
hb_language_t lang = hb_language_from_string (lang_s, -1);
hb_tag_t tag = hb_tag_from_string (tag_s, -1);
hb_tag_t tag2;
unsigned int count = 1;
g_test_message ("Testing language %s <-> tag %s", lang_s, tag_s);
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hb_ot_tags_from_script_and_language (HB_SCRIPT_INVALID,
lang,
NULL, NULL, &count, &tag2);
if (count)
g_assert_cmphex (tag, ==, tag2);
else
g_assert_cmphex (tag, ==, HB_TAG_CHAR4 ("dflt"));
g_assert (lang == hb_ot_tag_to_language (tag));
}
static void
test_tag_from_language (const char *tag_s, const char *lang_s)
{
hb_language_t lang = hb_language_from_string (lang_s, -1);
hb_tag_t tag = hb_tag_from_string (tag_s, -1);
hb_tag_t tag2;
unsigned int count = 1;
g_test_message ("Testing language %s -> tag %s", lang_s, tag_s);
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hb_ot_tags_from_script_and_language (HB_SCRIPT_INVALID,
lang,
NULL, NULL, &count, &tag2);
if (count)
g_assert_cmphex (tag, ==, tag2);
else
g_assert_cmphex (tag, ==, HB_TAG_CHAR4 ("dflt"));
}
static void
test_tag_to_language (const char *tag_s, const char *lang_s)
{
hb_language_t lang = hb_language_from_string (lang_s, -1);
hb_tag_t tag = hb_tag_from_string (tag_s, -1);
g_test_message ("Testing tag %s -> language %s", tag_s, lang_s);
g_assert (lang == hb_ot_tag_to_language (tag));
}
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static void
test_tags_to_script_and_language (const char *script_tag_s,
const char *lang_tag_s,
const char *script_s,
const char *lang_s)
{
hb_script_t actual_script[1];
hb_language_t actual_lang[1];
hb_tag_t script_tag = hb_tag_from_string (script_tag_s, -1);
hb_tag_t lang_tag = hb_tag_from_string (lang_tag_s, -1);
hb_ot_tags_to_script_and_language (script_tag, lang_tag, actual_script, actual_lang);
g_assert_cmphex (*actual_script, ==, hb_tag_from_string (script_s, -1));
g_assert_cmpstr (hb_language_to_string (*actual_lang), ==, lang_s);
}
static void
test_ot_tags_to_script_and_language (void)
{
test_tags_to_script_and_language ("DFLT", "ENG", "", "en-x-hbsc-44464c54");
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test_tags_to_script_and_language ("latn", "ENG", "Latn", "en");
test_tags_to_script_and_language ("deva", "MAR", "Deva", "mr-x-hbsc-64657661");
test_tags_to_script_and_language ("dev2", "MAR", "Deva", "mr-x-hbsc-64657632");
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test_tags_to_script_and_language ("dev3", "MAR", "Deva", "mr");
test_tags_to_script_and_language ("qaa", "QTZ0", "Qaaa", "x-hbot-51545a30-hbsc-71616120");
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}
static void
test_ot_tag_language (void)
{
g_assert_cmphex (HB_TAG_CHAR4 ("dflt"), ==, HB_OT_TAG_DEFAULT_LANGUAGE);
test_language_two_way ("dflt", NULL);
test_language_two_way ("ALT", "alt");
test_language_two_way ("ARA", "ar");
test_language_two_way ("AZE", "az");
test_tag_from_language ("AZE", "az-ir");
test_tag_from_language ("AZE", "az-az");
test_language_two_way ("ENG", "en");
test_tag_from_language ("ENG", "en_US");
test_language_two_way ("CJA", "cja-x-hbot-434a4120"); /* Western Cham */
test_language_two_way ("CJM", "cjm-x-hbot-434a4d20"); /* Eastern Cham */
test_tag_from_language ("CJM", "cjm");
test_language_two_way ("EVN", "eve");
test_language_two_way ("HAL", "cfm"); /* BCP47 and current ISO639-3 code for Halam/Falam Chin */
test_tag_from_language ("HAL", "flm"); /* Retired ISO639-3 code for Halam/Falam Chin */
test_language_two_way ("HYE0", "hy");
test_language_two_way ("HYE", "hyw");
test_tag_from_language ("QIN", "bgr"); /* Bawm Chin */
test_tag_from_language ("QIN", "cbl"); /* Bualkhaw Chin */
test_tag_from_language ("QIN", "cka"); /* Khumi Awa Chin */
test_tag_from_language ("QIN", "cmr"); /* Mro-Khimi Chin */
test_tag_from_language ("QIN", "cnb"); /* Chinbon Chin */
test_tag_from_language ("QIN", "cnh"); /* Hakha Chin */
test_tag_from_language ("QIN", "cnk"); /* Khumi Chin */
test_tag_from_language ("QIN", "cnw"); /* Ngawn Chin */
test_tag_from_language ("QIN", "csh"); /* Asho Chin */
test_tag_from_language ("QIN", "csy"); /* Siyin Chin */
test_tag_from_language ("QIN", "ctd"); /* Tedim Chin */
test_tag_from_language ("QIN", "czt"); /* Zotung Chin */
test_tag_from_language ("QIN", "dao"); /* Daai Chin */
test_tag_from_language ("QIN", "hlt"); /* Matu Chin */
test_tag_from_language ("QIN", "mrh"); /* Mara Chin */
test_tag_from_language ("QIN", "pck"); /* Paite Chin */
test_tag_from_language ("QIN", "sez"); /* Senthang Chin */
test_tag_from_language ("QIN", "tcp"); /* Tawr Chin */
test_tag_from_language ("QIN", "tcz"); /* Thado Chin */
test_tag_from_language ("QIN", "yos"); /* Yos, deprecated by IANA in favor of Zou [zom] */
test_tag_from_language ("QIN", "zom"); /* Zou */
test_tag_to_language ("QIN", "bgr"); /* no single BCP47 tag for Chin; picking Bawm Chin */
test_language_two_way ("FAR", "fa");
test_tag_from_language ("FAR", "fa_IR");
test_language_two_way ("MNK", "man"); /* Mandingo [macrolanguage] */
test_language_two_way ("SWA", "aii"); /* Swadaya Aramaic */
test_language_two_way ("SYR", "syr"); /* Syriac [macrolanguage] */
test_tag_from_language ("SYR", "amw"); /* Western Neo-Aramaic */
test_tag_from_language ("SYR", "cld"); /* Chaldean Neo-Aramaic */
test_tag_from_language ("SYR", "syc"); /* Classical Syriac */
test_language_two_way ("TUA", "tru"); /* Turoyo Aramaic */
test_tag_from_language ("ZHS", "zh"); /* Chinese */
test_tag_from_language ("ZHS", "zh-cn"); /* Chinese (China) */
test_tag_from_language ("ZHS", "zh-sg"); /* Chinese (Singapore) */
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test_tag_from_language ("ZHH", "zh-mo"); /* Chinese (Macao) */
test_tag_from_language ("ZHH", "zh-hant-mo"); /* Chinese (Macao) */
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_language_two_way ("ZHH", "zh-HK"); /* Chinese (Hong Kong) */
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test_tag_from_language ("ZHH", "zH-HanT-hK"); /* Chinese (Hong Kong) */
test_tag_from_language ("ZHT", "zh-tw"); /* Chinese (Taiwan) */
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_language_two_way ("ZHS", "zh-Hans"); /* Chinese (Simplified) */
test_language_two_way ("ZHT", "zh-Hant"); /* Chinese (Traditional) */
test_tag_from_language ("ZHS", "zh-xx"); /* Chinese (Other) */
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_tag_from_language ("ZHS", "zh-Hans-TW");
test_tag_from_language ("ZHH", "yue");
test_tag_from_language ("ZHH", "yue-Hant");
test_tag_from_language ("ZHS", "yue-Hans");
test_language_two_way ("ABC", "abc-x-hbot-41424320");
test_language_two_way ("ABCD", "x-hbot-41424344");
test_tag_from_language ("ABC", "asdf-asdf-wer-x-hbotabc-zxc");
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test_tag_from_language ("ABC", "asdf-asdf-wer-x-hbotabc");
test_tag_from_language ("ABCD", "asdf-asdf-wer-x-hbotabcd");
test_tag_from_language ("ABC", "asdf-asdf-wer-x-hbot-41424320-zxc");
test_tag_from_language ("ABC", "asdf-asdf-wer-x-hbot-41424320");
test_tag_from_language ("ABCD", "asdf-asdf-wer-x-hbot-41424344");
test_tag_from_language ("dflt", "asdf-asdf-wer-x-hbot");
test_tag_from_language ("dflt", "asdf-asdf-wer-x-hbot-zxc");
test_tag_from_language ("dflt", "asdf-asdf-wer-x-hbot-zxc-414243");
test_tag_from_language ("dflt", "asdf-asdf-wer-x-hbot-414243");
test_tag_from_language ("dflt", "asdf-asdf-wer-x-hbot-4142432");
2011-05-14 05:04:46 +02:00
test_tag_from_language ("dflt", "xy");
test_tag_from_language ("XYZ", "xyz"); /* Unknown ISO 639-3 */
test_tag_from_language ("XYZ", "xyz-qw"); /* Unknown ISO 639-3 */
/*
* Invalid input. The precise answer does not matter, as long as it
* does not crash or get into an infinite loop.
*/
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
2017-12-09 04:45:52 +01:00
test_tag_from_language ("IPPH", "-fonipa");
/*
* Tags that contain "-fonipa" as a substring but which do not contain
* the subtag "fonipa".
*/
test_tag_from_language ("ENG", "en-fonipax");
test_tag_from_language ("ENG", "en-x-fonipa");
test_tag_from_language ("ENG", "en-a-fonipa");
test_tag_from_language ("ENG", "en-a-qwe-b-fonipa");
/* International Phonetic Alphabet */
test_tag_from_language ("IPPH", "en-fonipa");
test_tag_from_language ("IPPH", "en-fonipax-fonipa");
test_tag_from_language ("IPPH", "rm-CH-fonipa-sursilv-x-foobar");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
2017-12-09 04:45:52 +01:00
test_language_two_way ("IPPH", "und-fonipa");
test_tag_from_language ("IPPH", "zh-fonipa");
/* North American Phonetic Alphabet (Americanist Phonetic Notation) */
test_tag_from_language ("APPH", "en-fonnapa");
test_tag_from_language ("APPH", "chr-fonnapa");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
2017-12-09 04:45:52 +01:00
test_language_two_way ("APPH", "und-fonnapa");
/* Khutsuri Georgian */
test_tag_from_language ("KGE", "ka-Geok");
test_language_two_way ("KGE", "und-Geok");
/* Irish Traditional */
test_language_two_way ("IRT", "ga-Latg");
/* Moldavian */
test_language_two_way ("MOL", "ro-MD");
/* Polytonic Greek */
test_language_two_way ("PGR", "el-polyton");
test_tag_from_language ("PGR", "el-CY-polyton");
/* Estrangela Syriac */
test_tag_from_language ("SYRE", "aii-Syre");
test_tag_from_language ("SYRE", "de-Syre");
test_tag_from_language ("SYRE", "syr-Syre");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
2017-12-09 04:45:52 +01:00
test_language_two_way ("SYRE", "und-Syre");
/* Western Syriac */
test_tag_from_language ("SYRJ", "aii-Syrj");
test_tag_from_language ("SYRJ", "de-Syrj");
test_tag_from_language ("SYRJ", "syr-Syrj");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
2017-12-09 04:45:52 +01:00
test_language_two_way ("SYRJ", "und-Syrj");
/* Eastern Syriac */
test_tag_from_language ("SYRN", "aii-Syrn");
test_tag_from_language ("SYRN", "de-Syrn");
test_tag_from_language ("SYRN", "syr-Syrn");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_language_two_way ("SYRN", "und-Syrn");
2011-05-14 05:04:46 +02:00
/* Test that x-hbot overrides the base language */
test_tag_from_language ("ABC", "fa-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("ABC", "fa-ir-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("ABC", "zh-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("ABC", "zh-cn-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("ABC", "zh-xy-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("ABC", "xyz-xy-x-hbotabc-hbot-41686121-zxc");
test_tag_from_language ("Aha!", "fa-x-hbot-41686121-hbotabc-zxc");
test_tag_from_language ("Aha!", "fa-ir-x-hbot-41686121-hbotabc-zxc");
test_tag_from_language ("Aha!", "zh-x-hbot-41686121-hbotabc-zxc");
test_tag_from_language ("Aha!", "zh-cn-x-hbot-41686121-hbotabc-zxc");
test_tag_from_language ("Aha!", "zh-xy-x-hbot-41686121-hbotabc-zxc");
test_tag_from_language ("Aha!", "xyz-xy-x-hbot-41686121-hbotabc-zxc");
/* Invalid x-hbot */
test_tag_from_language ("dflt", "x-hbot");
test_tag_from_language ("dflt", "x-hbot-");
test_tag_from_language ("dflt", "x-hbot-1");
test_tag_from_language ("dflt", "x-hbot-1a");
test_tag_from_language ("dflt", "x-hbot-1a2b3c4x");
test_tag_from_language ("2lon", "x-hbot-326c6f6e67");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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/* Unnormalized BCP 47 tags */
test_tag_from_language ("ARA", "ar-aao");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_tag_from_language ("JBO", "art-lojban");
test_tag_from_language ("KOK", "kok-gom");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_tag_from_language ("LTZ", "i-lux");
test_tag_from_language ("MNG", "drh");
test_tag_from_language ("MOR", "ar-ary");
test_tag_from_language ("MOR", "ar-ary-DZ");
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_tag_from_language ("NOR", "no-bok");
test_tag_from_language ("NYN", "no-nyn");
test_tag_from_language ("ZHS", "i-hak");
test_tag_from_language ("ZHS", "zh-guoyu");
test_tag_from_language ("ZHS", "zh-min");
test_tag_from_language ("ZHS", "zh-min-nan");
test_tag_from_language ("ZHS", "zh-xiang");
/* A UN M.49 region code, not an extended language subtag */
test_tag_from_language ("ARA", "ar-001");
/* An invalid tag */
test_tag_from_language ("TRK", "tr@foo=bar");
}
static void
test_tags (hb_script_t script,
const char *lang_s,
unsigned int script_count,
unsigned int language_count,
unsigned int expected_script_count,
unsigned int expected_language_count,
...)
{
va_list expected_tags;
unsigned int i;
hb_tag_t *script_tags = malloc (script_count * sizeof (hb_tag_t));
hb_tag_t *language_tags = malloc (language_count * sizeof (hb_tag_t));
hb_language_t lang;
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g_assert (script_tags);
g_assert (language_tags);
lang = hb_language_from_string (lang_s, -1);
va_start (expected_tags, expected_language_count);
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hb_ot_tags_from_script_and_language (script, lang, &script_count, script_tags, &language_count, language_tags);
g_assert_cmpuint (script_count, ==, expected_script_count);
g_assert_cmpuint (language_count, ==, expected_language_count);
for (i = 0; i < script_count + language_count; i++)
{
hb_tag_t expected_tag = hb_tag_from_string (va_arg (expected_tags, const char *), -1);
hb_tag_t actual_tag = i < script_count ? script_tags[i] : language_tags[i - script_count];
g_assert_cmphex (actual_tag, ==, expected_tag);
}
free (script_tags);
free (language_tags);
va_end (expected_tags);
}
static void
test_ot_tag_full (void)
{
test_tags (HB_SCRIPT_INVALID, "en", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 0, 1, "ENG");
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test_tags (HB_SCRIPT_INVALID, "en-x-hbscdflt", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 1, 1, "DFLT", "ENG");
test_tags (HB_SCRIPT_LATIN, "en", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 1, 1, "latn", "ENG");
test_tags (HB_SCRIPT_LATIN, "en", 0, 0, 0, 0);
Autogenerate the BCP 47 to OpenType mappings The new script, gen-tag-table.py, generates `ot_languages` automatically from the [OpenType language system tag registry][ot] and the [IANA Language Subtag Registry][bcp47] with some manual modifications. If an OpenType tag maps to a BCP 47 macrolanguage, all the macrolanguage's individual languages are mapped to the same OpenType tag, except for individual languages with their own OpenType mappings. Deprecated BCP 47 tags are canonicalized. [ot]: https://docs.microsoft.com/en-us/typography/opentype/spec/languagetags [bcp47]: https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry Some OpenType tags correspond to multiple ISO 639 codes. The mapping from ISO 639 codes lists OpenType tags in priority order, such that more specific or more likely tags appear first. Some OpenType tags have no corresponding ISO 639 code in the registry so their mappings use BCP 47 subtags besides the language. For example, any BCP 47 tag with a fonipa variant subtag is mapped to 'IPPH', and 'IPPH' is mapped back to und-fonipa. Other OpenType tags have no corresponding ISO 639 code because it is not clear what they are for. HarfBuzz just ignores these tags. One such ignored tag is 'ZHP ' (Chinese Phonetic). It probably means zh-Latn. However, it is used in Microsoft JhengHei and Microsoft YaHei with the script tag 'hani', implying that it is not a romanization scheme after all. It would be simple enough to add this mapping to gen-tag-table.py once a definitive mapping is determined. The manual modifications are mainly either obvious mappings that the OpenType registry omits or mappings for compatibility with previous versions of HarfBuzz. Some of the old mappings were discarded, though, for homophonous language names. For example, OpenType maps 'KUI ' to kxu; previous versions of HarfBuzz also mapped it to kvd, because kvd and kxu both happen to be called "Kui". gen-tag-table.py also generates a function to convert multi-subtag tags like el-polyton and zh-HK to OpenType tags, replacing `ot_languages_zh` and the hard-coded list of special cases in `hb_ot_tags_from_language`. It also generates a function to convert OpenType tags to BCP 47, replacing the hard-coded list of special cases in `hb_ot_tag_to_language`.
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test_tags (HB_SCRIPT_INVALID, "und-fonnapa", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 0, 1, "APPH");
test_tags (HB_SCRIPT_INVALID, "en-fonnapa", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 0, 1, "APPH");
test_tags (HB_SCRIPT_INVALID, "x-hbot1234-hbsc5678", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 1, 1, "5678", "1234");
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test_tags (HB_SCRIPT_INVALID, "x-hbsc5678-hbot1234", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 1, 1, "5678", "1234");
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test_tags (HB_SCRIPT_MALAYALAM, "ml", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 3, 2, "mlm3", "mlm2", "mlym", "MAL", "MLR");
test_tags (HB_SCRIPT_MALAYALAM, "ml", 1, 1, 1, 1, "mlm3", "MAL");
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test_tags (HB_SCRIPT_MYANMAR, "und", HB_OT_MAX_TAGS_PER_SCRIPT, 0, 2, 0, "mym2", "mymr");
test_tags (HB_SCRIPT_INVALID, "xyz", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 0, 1, "XYZ");
test_tags (HB_SCRIPT_INVALID, "xy", HB_OT_MAX_TAGS_PER_SCRIPT, HB_OT_MAX_TAGS_PER_LANGUAGE, 0, 0);
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_ot_tag_script_degenerate);
hb_test_add (test_ot_tag_script_simple);
hb_test_add (test_ot_tag_script_from_language);
hb_test_add (test_ot_tag_script_indic);
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hb_test_add (test_ot_tags_to_script_and_language);
hb_test_add (test_ot_tag_language);
hb_test_add (test_ot_tag_full);
return hb_test_run();
}