Roll HarfBuzz to 0.9.32

third_party/harfbuzz-ng/src/hb-ot-shape-complex-arabic.cc

 /*
  * Copyright © 2010,2012  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.
@@ skipping 39 matching lines @@
 };
 
 /*
  * Joining types:
  */
 
 #include "hb-ot-shape-complex-arabic-table.hh"
 
 static unsigned int get_joining_type (hb_codepoint_t u, hb_unicode_general_category_t gen_cat)
 {
-  if (likely (hb_in_range<hb_codepoint_t> (u, JOINING_TABLE_FIRST, JOINING_TABLE_LAST))) {
-    unsigned int j_type = joining_table[u - JOINING_TABLE_FIRST];
-    if (likely (j_type != JOINING_TYPE_X))
-      return j_type;
-  }
+  unsigned int j_type = joining_type(u);
+  if (likely (j_type != JOINING_TYPE_X))
+    return j_type;
 
-  /* Mongolian joining data is not in ArabicJoining.txt yet. */
-  if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x1800, 0x18AF)))
-  {
-    if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x1880, 0x1886)))
-      return JOINING_TYPE_U;
-
-    /* All letters, SIBE SYLLABLE BOUNDARY MARKER, and NIRUGU are D */
-    if ((FLAG(gen_cat) & (FLAG (HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER) |
-                          FLAG (HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER)))
-        || u == 0x1807 || u == 0x180A)
-      return JOINING_TYPE_D;
-  }
-
-  /* 'Phags-pa joining data is not in ArabicJoining.txt yet. */
-  if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xA840, 0xA872)))
-  {
-      if (unlikely (u == 0xA872))
-        return JOINING_TYPE_L;
-
-      return JOINING_TYPE_D;
-  }
-
-  if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x200C, 0x200D)))
-  {
-    return u == 0x200C ? JOINING_TYPE_U : JOINING_TYPE_C;
-  }
-
-  return (FLAG(gen_cat) & (FLAG(HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) | FLAG(HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | FLAG(HB_UNICODE_GENERAL_CATEGORY_FORMAT))) ?
-         JOINING_TYPE_T : JOINING_TYPE_U;
+  return (FLAG(gen_cat) &
+          (FLAG(HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) |
+           FLAG(HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) |
+           FLAG(HB_UNICODE_GENERAL_CATEGORY_FORMAT))
+         ) ?  JOINING_TYPE_T : JOINING_TYPE_U;
 }
 
 static const hb_tag_t arabic_features[] =
 {
   HB_TAG('i','n','i','t'),
   HB_TAG('m','e','d','i'),
   HB_TAG('f','i','n','a'),
   HB_TAG('i','s','o','l'),
   /* Syriac */
   HB_TAG('m','e','d','2'),
@@ skipping 260 matching lines @@
   data_create_arabic,
   data_destroy_arabic,
   NULL, /* preprocess_text_arabic */
   HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
   NULL, /* decompose */
   NULL, /* compose */
   setup_masks_arabic,
   HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
   true, /* fallback_position */
 };