Roll harfbuzz-ng to 1.0.5

third_party/harfbuzz-ng/src/hb-ot-tag.cc

 /*
  * Copyright © 2009  Red Hat, Inc.
  * 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
@@ skipping 715 matching lines @@
 /*{"ahg/awn/xan?",      HB_TAG('A','G','W',' ')},*/     /* Agaw */
 /*{"gsw?/gsw-FR?",      HB_TAG('A','L','S',' ')},*/     /* Alsatian */
 /*{"krc",       HB_TAG('B','A','L',' ')},*/     /* Balkar */
 /*{"??",        HB_TAG('B','C','R',' ')},*/     /* Bible Cree */
 /*{"zh?",       HB_TAG('C','H','N',' ')},*/     /* Chinese (seen in Microsoft fonts) */
 /*{"acf/gcf?",  HB_TAG('F','A','N',' ')},*/     /* French Antillean */
 /*{"enf?/yrk?", HB_TAG('F','N','E',' ')},*/     /* Forest Nenets */
 /*{"fuf?",      HB_TAG('F','T','A',' ')},*/     /* Futa */
 /*{"ar-Syrc?",  HB_TAG('G','A','R',' ')},*/     /* Garshuni */
 /*{"cfm/rnl?",  HB_TAG('H','A','L',' ')},*/     /* Halam */
-/*{"fonipa",    HB_TAG('I','P','P','H')},*/     /* Phonetic transcription—IPA conventions */
 /*{"ga-Latg?/Latg?",    HB_TAG('I','R','T',' ')},*/     /* Irish Traditional */
 /*{"krc",       HB_TAG('K','A','R',' ')},*/     /* Karachay */
 /*{"alw?/ktb?", HB_TAG('K','E','B',' ')},*/     /* Kebena */
 /*{"Geok",      HB_TAG('K','G','E',' ')},*/     /* Khutsuri Georgian */
 /*{"kca",       HB_TAG('K','H','K',' ')},*/     /* Khanty-Kazim */
 /*{"kca",       HB_TAG('K','H','S',' ')},*/     /* Khanty-Shurishkar */
 /*{"kca",       HB_TAG('K','H','V',' ')},*/     /* Khanty-Vakhi */
 /*{"guz?/kqs?/kss?",    HB_TAG('K','I','S',' ')},*/     /* Kisii */
 /*{"kfa/kfi?/kpb?/xua?/xuj?",   HB_TAG('K','O','D',' ')},*/     /* Kodagu */
 /*{"okm?/oko?", HB_TAG('K','O','H',' ')},*/     /* Korean Old Hangul */
@@ skipping 78 matching lines @@
     s += 6;
     for (i = 0; i < 4 && ISALPHA (s[i]); i++)
       tag[i] = TOUPPER (s[i]);
     if (i) {
       for (; i < 4; i++)
         tag[i] = ' ';
       return HB_TAG_CHAR4 (tag);
     }
   }
 
+  /*
+   * The International Phonetic Alphabet is a variant tag in BCP-47,
+   * which can be applied to any language.
+   */
+  if (strstr (lang_str, "-fonipa")) {
+    return HB_TAG('I','P','P','H');  /* Phonetic transcription—IPA conventions */
+  }
+
   /* Find a language matching in the first component */
   {
     const LangTag *lang_tag;
     lang_tag = (LangTag *) bsearch (lang_str, ot_languages,
                                     ARRAY_LENGTH (ot_languages), sizeof (LangTag),
                                     (hb_compare_func_t) lang_compare_first_component);
     if (lang_tag)
       return lang_tag->tag;
   }
 
@@ skipping 25 matching lines @@
   return HB_OT_TAG_DEFAULT_LANGUAGE;
 }
 
 /**
  * hb_ot_tag_to_language:
  *
  * 
  *
  * Return value: (transfer none):
  *
- * Since: 1.0
+ * Since: 0.9.2
  **/
 hb_language_t
 hb_ot_tag_to_language (hb_tag_t tag)
 {
   unsigned int i;
 
   if (tag == HB_OT_TAG_DEFAULT_LANGUAGE)
     return NULL;
 
   for (i = 0; i < ARRAY_LENGTH (ot_languages); i++)
     if (ot_languages[i].tag == tag)
       return hb_language_from_string (ot_languages[i].language, -1);
 
   /* If tag starts with ZH, it's Chinese */
   if ((tag & 0xFFFF0000u)  == 0x5A480000u) {
     switch (tag) {
       case HB_TAG('Z','H','H',' '): return hb_language_from_string ("zh-hk", -1); /* Hong Kong */
       case HB_TAG('Z','H','S',' '): return hb_language_from_string ("zh-Hans", -1); /* Simplified */
       case HB_TAG('Z','H','T',' '): return hb_language_from_string ("zh-Hant", -1); /* Traditional */
       default: break; /* Fall through */
     }
   }
 
+  /* struct LangTag has only room for 3-letter language tags. */
+  switch (tag) {
+  case HB_TAG('I','P','P','H'):  /* Phonetic transcription—IPA conventions */
+    return hb_language_from_string ("und-fonipa", -1);
+  }
+
   /* Else return a custom language in the form of "x-hbotABCD" */
   {
     unsigned char buf[11] = "x-hbot";
     buf[6] = tag >> 24;
     buf[7] = (tag >> 16) & 0xFF;
     buf[8] = (tag >> 8) & 0xFF;
     buf[9] = tag & 0xFF;
     if (buf[9] == 0x20)
       buf[9] = '\0';
     buf[10] = '\0';
     return hb_language_from_string ((char *) buf, -1);
   }
 }