Update bundled HarfBuzz-NG to 1.0.6

- Unicode 8.0 support
- Universal Shaping Engine
- Various fixes, improvements, optimizations, etc.

Change-Id: Ib6f8c92fa275c2a6575b9ae09068c92aecac7b4e
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

1 files changed, 22 insertions, 14 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-shape-plan.cc b/src/3rdparty/harfbuzz-ng/src/hb-shape-plan.cc
index 2166173f9e..56e2ea5c19 100644
--- a/src/3rdparty/harfbuzz-ng/src/hb-shape-plan.cc
+++ b/src/3rdparty/harfbuzz-ng/src/hb-shape-plan.cc
@@ -106,7 +106,7 @@ hb_shape_plan_plan (hb_shape_plan_t    *shape_plan,
  *
  * Return value: (transfer full):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_shape_plan_t *
 hb_shape_plan_create (hb_face_t                     *face,
@@ -126,9 +126,9 @@ hb_shape_plan_create (hb_face_t                     *face,
 
   if (unlikely (!face))
     face = hb_face_get_empty ();
-  if (unlikely (!props || hb_object_is_inert (face)))
+  if (unlikely (!props))
     return hb_shape_plan_get_empty ();
-  if (num_user_features && !(features = (hb_feature_t *) malloc (num_user_features * sizeof (hb_feature_t))))
+  if (num_user_features && !(features = (hb_feature_t *) calloc (num_user_features, sizeof (hb_feature_t))))
     return hb_shape_plan_get_empty ();
   if (!(shape_plan = hb_object_create<hb_shape_plan_t> ())) {
     free (features);
@@ -158,7 +158,7 @@ hb_shape_plan_create (hb_face_t                     *face,
  *
  * Return value: (transfer full):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_shape_plan_t *
 hb_shape_plan_get_empty (void)
@@ -194,7 +194,7 @@ hb_shape_plan_get_empty (void)
  *
  * Return value: (transfer full):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_shape_plan_t *
 hb_shape_plan_reference (hb_shape_plan_t *shape_plan)
@@ -208,7 +208,7 @@ hb_shape_plan_reference (hb_shape_plan_t *shape_plan)
  *
  * 
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 void
 hb_shape_plan_destroy (hb_shape_plan_t *shape_plan)
@@ -236,7 +236,7 @@ hb_shape_plan_destroy (hb_shape_plan_t *shape_plan)
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_bool_t
 hb_shape_plan_set_user_data (hb_shape_plan_t    *shape_plan,
@@ -257,7 +257,7 @@ hb_shape_plan_set_user_data (hb_shape_plan_t    *shape_plan,
  *
  * Return value: (transfer none):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 void *
 hb_shape_plan_get_user_data (hb_shape_plan_t    *shape_plan,
@@ -279,7 +279,7 @@ hb_shape_plan_get_user_data (hb_shape_plan_t    *shape_plan,
  *
  * Return value: 
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_bool_t
 hb_shape_plan_execute (hb_shape_plan_t    *shape_plan,
@@ -293,9 +293,13 @@ hb_shape_plan_execute (hb_shape_plan_t    *shape_plan,
 		  num_features,
 		  shape_plan->shaper_func);
 
-  if (unlikely (hb_object_is_inert (shape_plan) ||
-		hb_object_is_inert (font) ||
-		hb_object_is_inert (buffer)))
+  if (unlikely (!buffer->len))
+    return true;
+
+  assert (!hb_object_is_inert (buffer));
+  assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE);
+
+  if (unlikely (hb_object_is_inert (shape_plan)))
     return false;
 
   assert (shape_plan->face_unsafe == font->face);
@@ -396,7 +400,7 @@ hb_non_global_user_features_present (const hb_feature_t *user_features,
  *
  * Return value: (transfer full):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 hb_shape_plan_t *
 hb_shape_plan_create_cached (hb_face_t                     *face,
@@ -453,6 +457,10 @@ retry:
 
   hb_shape_plan_t *shape_plan = hb_shape_plan_create (face, props, user_features, num_user_features, shaper_list);
 
+  /* Don't add to the cache if face is inert. */
+  if (unlikely (hb_object_is_inert (face)))
+    return shape_plan;
+
   /* Don't add the plan to the cache if there were user features with non-global ranges */
 
   if (hb_non_global_user_features_present (user_features, num_user_features))
@@ -483,7 +491,7 @@ retry:
  *
  * Return value: (transfer none):
  *
- * Since: 1.0
+ * Since: 0.9.7
  **/
 const char *
 hb_shape_plan_get_shaper (hb_shape_plan_t *shape_plan)