Update harfbuzz-ng to 0.9.27

third_party/harfbuzz-ng/src/hb-ot-shape-complex-default.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.
  *
  * 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-ot-shape-complex-private.hh"
 
 
-/* TODO Add kana, and other small shapers here */
-
-
-/* The default shaper *only* adds additional per-script features.*/
-
-static const hb_tag_t hangul_features[] =
-{
-  HB_TAG('l','j','m','o'),
-  HB_TAG('v','j','m','o'),
-  HB_TAG('t','j','m','o'),
-  HB_TAG_NONE
-};
-
-static const hb_tag_t tibetan_features[] =
-{
-  HB_TAG('a','b','v','s'),
-  HB_TAG('b','l','w','s'),
-  HB_TAG('a','b','v','m'),
-  HB_TAG('b','l','w','m'),
-  HB_TAG_NONE
-};
-
-static void
-collect_features_default (hb_ot_shape_planner_t *plan)
-{
-  const hb_tag_t *script_features = NULL;
-
-  switch ((hb_tag_t) plan->props.script)
-  {
-    /* Unicode-1.1 additions */
-    case HB_SCRIPT_HANGUL:
-      script_features = hangul_features;
-      break;
-
-    /* Unicode-2.0 additions */
-    case HB_SCRIPT_TIBETAN:
-      script_features = tibetan_features;
-      break;
-  }
-
-  for (; script_features && *script_features; script_features++)
-    plan->map.add_global_bool_feature (*script_features);
-}
-
-static hb_ot_shape_normalization_mode_t
-normalization_preference_default (const hb_segment_properties_t *props)
-{
-  return HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS;
-}
-
-static bool
-compose_default (const hb_ot_shape_normalize_context_t *c,
-                 hb_codepoint_t  a,
-                 hb_codepoint_t  b,
-                 hb_codepoint_t *ab)
-{
-  /* Hebrew presentation-form shaping.
-   * https://bugzilla.mozilla.org/show_bug.cgi?id=728866
-   * Hebrew presentation forms with dagesh, for characters 0x05D0..0x05EA;
-   * Note that some letters do not have a dagesh presForm encoded.
-   */
-  static const hb_codepoint_t sDageshForms[0x05EA - 0x05D0 + 1] = {
-    0xFB30, /* ALEF */
-    0xFB31, /* BET */
-    0xFB32, /* GIMEL */
-    0xFB33, /* DALET */
-    0xFB34, /* HE */
-    0xFB35, /* VAV */
-    0xFB36, /* ZAYIN */
-    0x0000, /* HET */
-    0xFB38, /* TET */
-    0xFB39, /* YOD */
-    0xFB3A, /* FINAL KAF */
-    0xFB3B, /* KAF */
-    0xFB3C, /* LAMED */
-    0x0000, /* FINAL MEM */
-    0xFB3E, /* MEM */
-    0x0000, /* FINAL NUN */
-    0xFB40, /* NUN */
-    0xFB41, /* SAMEKH */
-    0x0000, /* AYIN */
-    0xFB43, /* FINAL PE */
-    0xFB44, /* PE */
-    0x0000, /* FINAL TSADI */
-    0xFB46, /* TSADI */
-    0xFB47, /* QOF */
-    0xFB48, /* RESH */
-    0xFB49, /* SHIN */
-    0xFB4A /* TAV */
-  };
-
-  bool found = c->unicode->compose (a, b, ab);
-
-  if (!found && (b & ~0x7F) == 0x0580) {
-      /* Special-case Hebrew presentation forms that are excluded from
-       * standard normalization, but wanted for old fonts. */
-      switch (b) {
-      case 0x05B4: /* HIRIQ */
-          if (a == 0x05D9) { /* YOD */
-              *ab = 0xFB1D;
-              found = true;
-          }
-          break;
-      case 0x05B7: /* patah */
-          if (a == 0x05F2) { /* YIDDISH YOD YOD */
-              *ab = 0xFB1F;
-              found = true;
-          } else if (a == 0x05D0) { /* ALEF */
-              *ab = 0xFB2E;
-              found = true;
-          }
-          break;
-      case 0x05B8: /* QAMATS */
-          if (a == 0x05D0) { /* ALEF */
-              *ab = 0xFB2F;
-              found = true;
-          }
-          break;
-      case 0x05B9: /* HOLAM */
-          if (a == 0x05D5) { /* VAV */
-              *ab = 0xFB4B;
-              found = true;
-          }
-          break;
-      case 0x05BC: /* DAGESH */
-          if (a >= 0x05D0 && a <= 0x05EA) {
-              *ab = sDageshForms[a - 0x05D0];
-              found = (*ab != 0);
-          } else if (a == 0xFB2A) { /* SHIN WITH SHIN DOT */
-              *ab = 0xFB2C;
-              found = true;
-          } else if (a == 0xFB2B) { /* SHIN WITH SIN DOT */
-              *ab = 0xFB2D;
-              found = true;
-          }
-          break;
-      case 0x05BF: /* RAFE */
-          switch (a) {
-          case 0x05D1: /* BET */
-              *ab = 0xFB4C;
-              found = true;
-              break;
-          case 0x05DB: /* KAF */
-              *ab = 0xFB4D;
-              found = true;
-              break;
-          case 0x05E4: /* PE */
-              *ab = 0xFB4E;
-              found = true;
-              break;
-          }
-          break;
-      case 0x05C1: /* SHIN DOT */
-          if (a == 0x05E9) { /* SHIN */
-              *ab = 0xFB2A;
-              found = true;
-          } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
-              *ab = 0xFB2C;
-              found = true;
-          }
-          break;
-      case 0x05C2: /* SIN DOT */
-          if (a == 0x05E9) { /* SHIN */
-              *ab = 0xFB2B;
-              found = true;
-          } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
-              *ab = 0xFB2D;
-              found = true;
-          }
-          break;
-      }
-  }
-
-  return found;
-}
-
 const hb_ot_complex_shaper_t _hb_ot_complex_shaper_default =
 {
   "default",
-  collect_features_default,
+  NULL, /* collect_features */
   NULL, /* override_features */
   NULL, /* data_create */
   NULL, /* data_destroy */
   NULL, /* preprocess_text */
-  normalization_preference_default,
+  HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
   NULL, /* decompose */
-  compose_default,
+  NULL, /* compose */
   NULL, /* setup_masks */
-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE,
+  HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
   true, /* fallback_position */
 };