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diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.28/src/hb-graphite2.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.28/src/hb-graphite2.cc
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+/*
+ * Copyright © 2011 Martin Hosken
+ * Copyright © 2011 SIL International
+ * Copyright © 2011,2012 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
+ */
+
+#define HB_SHAPER graphite2
+#define hb_graphite2_shaper_font_data_t gr_font
+#include "hb-shaper-impl-private.hh"
+
+#include "hb-graphite2.h"
+
+#include <graphite2/Segment.h>
+
+
+HB_SHAPER_DATA_ENSURE_DECLARE(graphite2, face)
+HB_SHAPER_DATA_ENSURE_DECLARE(graphite2, font)
+
+
+/*
+ * shaper face data
+ */
+
+typedef struct hb_graphite2_tablelist_t {
+ struct hb_graphite2_tablelist_t *next;
+ hb_blob_t *blob;
+ unsigned int tag;
+} hb_graphite2_tablelist_t;
+
+struct hb_graphite2_shaper_face_data_t {
+ hb_face_t *face;
+ gr_face *grface;
+ hb_graphite2_tablelist_t *tlist;
+};
+
+static const void *hb_graphite2_get_table (const void *data, unsigned int tag, size_t *len)
+{
+ hb_graphite2_shaper_face_data_t *face_data = (hb_graphite2_shaper_face_data_t *) data;
+ hb_graphite2_tablelist_t *tlist = face_data->tlist;
+
+ hb_blob_t *blob = NULL;
+
+ for (hb_graphite2_tablelist_t *p = tlist; p; p = p->next)
+ if (p->tag == tag) {
+ blob = p->blob;
+ break;
+ }
+
+ if (unlikely (!blob))
+ {
+ blob = face_data->face->reference_table (tag);
+
+ hb_graphite2_tablelist_t *p = (hb_graphite2_tablelist_t *) calloc (1, sizeof (hb_graphite2_tablelist_t));
+ if (unlikely (!p)) {
+ hb_blob_destroy (blob);
+ return NULL;
+ }
+ p->blob = blob;
+ p->tag = tag;
+
+ /* TODO Not thread-safe, but fairly harmless.
+ * We can do the double-chcked pointer cmpexch thing here. */
+ p->next = face_data->tlist;
+ face_data->tlist = p;
+ }
+
+ unsigned int tlen;
+ const char *d = hb_blob_get_data (blob, &tlen);
+ *len = tlen;
+ return d;
+}
+
+hb_graphite2_shaper_face_data_t *
+_hb_graphite2_shaper_face_data_create (hb_face_t *face)
+{
+ hb_blob_t *silf_blob = face->reference_table (HB_GRAPHITE2_TAG_SILF);
+ /* Umm, we just reference the table to check whether it exists.
+ * Maybe add better API for this? */
+ if (!hb_blob_get_length (silf_blob))
+ {
+ hb_blob_destroy (silf_blob);
+ return NULL;
+ }
+ hb_blob_destroy (silf_blob);
+
+ hb_graphite2_shaper_face_data_t *data = (hb_graphite2_shaper_face_data_t *) calloc (1, sizeof (hb_graphite2_shaper_face_data_t));
+ if (unlikely (!data))
+ return NULL;
+
+ data->face = face;
+ data->grface = gr_make_face (data, &hb_graphite2_get_table, gr_face_preloadAll);
+
+ if (unlikely (!data->grface)) {
+ free (data);
+ return NULL;
+ }
+
+ return data;
+}
+
+void
+_hb_graphite2_shaper_face_data_destroy (hb_graphite2_shaper_face_data_t *data)
+{
+ hb_graphite2_tablelist_t *tlist = data->tlist;
+
+ while (tlist)
+ {
+ hb_graphite2_tablelist_t *old = tlist;
+ hb_blob_destroy (tlist->blob);
+ tlist = tlist->next;
+ free (old);
+ }
+
+ gr_face_destroy (data->grface);
+
+ free (data);
+}
+
+gr_face *
+hb_graphite2_face_get_gr_face (hb_face_t *face)
+{
+ if (unlikely (!hb_graphite2_shaper_face_data_ensure (face))) return NULL;
+ return HB_SHAPER_DATA_GET (face)->grface;
+}
+
+
+/*
+ * shaper font data
+ */
+
+static float hb_graphite2_get_advance (const void *hb_font, unsigned short gid)
+{
+ return ((hb_font_t *) hb_font)->get_glyph_h_advance (gid);
+}
+
+hb_graphite2_shaper_font_data_t *
+_hb_graphite2_shaper_font_data_create (hb_font_t *font)
+{
+ if (unlikely (!hb_graphite2_shaper_face_data_ensure (font->face))) return NULL;
+
+ hb_face_t *face = font->face;
+ hb_graphite2_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
+
+ return gr_make_font_with_advance_fn (font->x_scale, font, &hb_graphite2_get_advance, face_data->grface);
+}
+
+void
+_hb_graphite2_shaper_font_data_destroy (hb_graphite2_shaper_font_data_t *data)
+{
+ gr_font_destroy (data);
+}
+
+gr_font *
+hb_graphite2_font_get_gr_font (hb_font_t *font)
+{
+ if (unlikely (!hb_graphite2_shaper_font_data_ensure (font))) return NULL;
+ return HB_SHAPER_DATA_GET (font);
+}
+
+
+/*
+ * shaper shape_plan data
+ */
+
+struct hb_graphite2_shaper_shape_plan_data_t {};
+
+hb_graphite2_shaper_shape_plan_data_t *
+_hb_graphite2_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan HB_UNUSED,
+ const hb_feature_t *user_features HB_UNUSED,
+ unsigned int num_user_features HB_UNUSED)
+{
+ return (hb_graphite2_shaper_shape_plan_data_t *) HB_SHAPER_DATA_SUCCEEDED;
+}
+
+void
+_hb_graphite2_shaper_shape_plan_data_destroy (hb_graphite2_shaper_shape_plan_data_t *data HB_UNUSED)
+{
+}
+
+
+/*
+ * shaper
+ */
+
+struct hb_graphite2_cluster_t {
+ unsigned int base_char;
+ unsigned int num_chars;
+ unsigned int base_glyph;
+ unsigned int num_glyphs;
+};
+
+hb_bool_t
+_hb_graphite2_shape (hb_shape_plan_t *shape_plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer,
+ const hb_feature_t *features,
+ unsigned int num_features)
+{
+ hb_face_t *face = font->face;
+ gr_face *grface = HB_SHAPER_DATA_GET (face)->grface;
+ gr_font *grfont = HB_SHAPER_DATA_GET (font);
+
+ const char *lang = hb_language_to_string (hb_buffer_get_language (buffer));
+ const char *lang_end = lang ? strchr (lang, '-') : NULL;
+ int lang_len = lang_end ? lang_end - lang : -1;
+ gr_feature_val *feats = gr_face_featureval_for_lang (grface, lang ? hb_tag_from_string (lang, lang_len) : 0);
+
+ while (num_features--)
+ {
+ const gr_feature_ref *fref = gr_face_find_fref (grface, features->tag);
+ if (fref)
+ gr_fref_set_feature_value (fref, features->value, feats);
+ features++;
+ }
+
+ gr_segment *seg = NULL;
+ const gr_slot *is;
+ unsigned int ci = 0, ic = 0;
+ float curradvx = 0., curradvy = 0.;
+
+ unsigned int scratch_size;
+ hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size);
+
+ uint32_t *chars = (uint32_t *) scratch;
+
+ for (unsigned int i = 0; i < buffer->len; ++i)
+ chars[i] = buffer->info[i].codepoint;
+
+ hb_tag_t script_tag[2];
+ hb_ot_tags_from_script (hb_buffer_get_script (buffer), &script_tag[0], &script_tag[1]);
+
+ seg = gr_make_seg (grfont, grface,
+ script_tag[1] == HB_TAG_NONE ? script_tag[0] : script_tag[1],
+ feats,
+ gr_utf32, chars, buffer->len,
+ 2 | (hb_buffer_get_direction (buffer) == HB_DIRECTION_RTL ? 1 : 0));
+
+ if (unlikely (!seg)) {
+ if (feats) gr_featureval_destroy (feats);
+ return false;
+ }
+
+ unsigned int glyph_count = gr_seg_n_slots (seg);
+ if (unlikely (!glyph_count)) {
+ if (feats) gr_featureval_destroy (feats);
+ gr_seg_destroy (seg);
+ return false;
+ }
+
+ scratch = buffer->get_scratch_buffer (&scratch_size);
+ while ((DIV_CEIL (sizeof (hb_graphite2_cluster_t) * buffer->len, sizeof (*scratch)) +
+ DIV_CEIL (sizeof (hb_codepoint_t) * glyph_count, sizeof (*scratch))) > scratch_size)
+ {
+ buffer->ensure (buffer->allocated * 2);
+ if (unlikely (buffer->in_error)) {
+ if (feats) gr_featureval_destroy (feats);
+ gr_seg_destroy (seg);
+ return false;
+ }
+ scratch = buffer->get_scratch_buffer (&scratch_size);
+ }
+
+#define ALLOCATE_ARRAY(Type, name, len) \
+ Type *name = (Type *) scratch; \
+ { \
+ unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \
+ assert (_consumed <= scratch_size); \
+ scratch += _consumed; \
+ scratch_size -= _consumed; \
+ }
+
+ ALLOCATE_ARRAY (hb_graphite2_cluster_t, clusters, buffer->len);
+ ALLOCATE_ARRAY (hb_codepoint_t, gids, glyph_count);
+
+#undef ALLOCATE_ARRAY
+
+ memset (clusters, 0, sizeof (clusters[0]) * buffer->len);
+
+ hb_codepoint_t *pg = gids;
+ for (is = gr_seg_first_slot (seg), ic = 0; is; is = gr_slot_next_in_segment (is), ic++)
+ {
+ unsigned int before = gr_slot_before (is);
+ unsigned int after = gr_slot_after (is);
+ *pg = gr_slot_gid (is);
+ pg++;
+ while (clusters[ci].base_char > before && ci)
+ {
+ clusters[ci-1].num_chars += clusters[ci].num_chars;
+ clusters[ci-1].num_glyphs += clusters[ci].num_glyphs;
+ ci--;
+ }
+
+ if (gr_slot_can_insert_before (is) && clusters[ci].num_chars && before >= clusters[ci].base_char + clusters[ci].num_chars)
+ {
+ hb_graphite2_cluster_t *c = clusters + ci + 1;
+ c->base_char = clusters[ci].base_char + clusters[ci].num_chars;
+ c->num_chars = before - c->base_char;
+ c->base_glyph = ic;
+ c->num_glyphs = 0;
+ ci++;
+ }
+ clusters[ci].num_glyphs++;
+
+ if (clusters[ci].base_char + clusters[ci].num_chars < after + 1)
+ clusters[ci].num_chars = after + 1 - clusters[ci].base_char;
+ }
+ ci++;
+
+ //buffer->clear_output ();
+ for (unsigned int i = 0; i < ci; ++i)
+ {
+ for (unsigned int j = 0; j < clusters[i].num_glyphs; ++j)
+ {
+ hb_glyph_info_t *info = &buffer->info[clusters[i].base_glyph + j];
+ info->codepoint = gids[clusters[i].base_glyph + j];
+ info->cluster = gr_cinfo_base(gr_seg_cinfo(seg, clusters[i].base_char));
+ }
+ }
+ buffer->len = glyph_count;
+ //buffer->swap_buffers ();
+
+ if (HB_DIRECTION_IS_BACKWARD(buffer->props.direction))
+ curradvx = gr_seg_advance_X(seg);
+
+ hb_glyph_position_t *pPos;
+ for (pPos = hb_buffer_get_glyph_positions (buffer, NULL), is = gr_seg_first_slot (seg);
+ is; pPos++, is = gr_slot_next_in_segment (is))
+ {
+ pPos->x_offset = gr_slot_origin_X (is) - curradvx;
+ pPos->y_offset = gr_slot_origin_Y (is) - curradvy;
+ pPos->x_advance = gr_slot_advance_X (is, grface, grfont);
+ pPos->y_advance = gr_slot_advance_Y (is, grface, grfont);
+ if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
+ curradvx -= pPos->x_advance;
+ pPos->x_offset = gr_slot_origin_X (is) - curradvx;
+ if (!HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
+ curradvx += pPos->x_advance;
+ pPos->y_offset = gr_slot_origin_Y (is) - curradvy;
+ curradvy += pPos->y_advance;
+ }
+ if (!HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
+ pPos[-1].x_advance += gr_seg_advance_X(seg) - curradvx;
+
+ if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
+ hb_buffer_reverse_clusters (buffer);
+
+ if (feats) gr_featureval_destroy (feats);
+ gr_seg_destroy (seg);
+
+ return true;
+}
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