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authorPeter Breitenlohner <peb@mppmu.mpg.de>2013-10-29 08:21:47 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2013-10-29 08:21:47 +0000
commit0043db89f7e867929263352f833492ef6df2286a (patch)
tree19631d6936ba1cbfdcc683c832ba50efd4ecd7d1 /Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc
parentdd4589b2bab77695ef1be9924a84b03e47092a27 (diff)
harfbuzz 0.9.23
git-svn-id: svn://tug.org/texlive/trunk@32029 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc')
-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc687
1 files changed, 0 insertions, 687 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc
deleted file mode 100644
index 4ed6b842071..00000000000
--- a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-ot-shape.cc
+++ /dev/null
@@ -1,687 +0,0 @@
-/*
- * Copyright © 2009,2010 Red Hat, Inc.
- * Copyright © 2010,2011,2012 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.
- *
- * Red Hat Author(s): Behdad Esfahbod
- * Google Author(s): Behdad Esfahbod
- */
-
-#define HB_SHAPER ot
-#define hb_ot_shaper_face_data_t hb_ot_layout_t
-#define hb_ot_shaper_shape_plan_data_t hb_ot_shape_plan_t
-#include "hb-shaper-impl-private.hh"
-
-#include "hb-ot-shape-private.hh"
-#include "hb-ot-shape-complex-private.hh"
-#include "hb-ot-shape-fallback-private.hh"
-#include "hb-ot-shape-normalize-private.hh"
-
-#include "hb-ot-layout-private.hh"
-#include "hb-set-private.hh"
-
-
-static hb_tag_t common_features[] = {
- HB_TAG('c','c','m','p'),
- HB_TAG('l','i','g','a'),
- HB_TAG('l','o','c','l'),
- HB_TAG('m','a','r','k'),
- HB_TAG('m','k','m','k'),
- HB_TAG('r','l','i','g'),
-};
-
-
-static hb_tag_t horizontal_features[] = {
- HB_TAG('c','a','l','t'),
- HB_TAG('c','l','i','g'),
- HB_TAG('c','u','r','s'),
- HB_TAG('k','e','r','n'),
- HB_TAG('r','c','l','t'),
-};
-
-static hb_tag_t vertical_features[] = {
- HB_TAG('v','e','r','t'),
-};
-
-
-
-static void
-hb_ot_shape_collect_features (hb_ot_shape_planner_t *planner,
- const hb_segment_properties_t *props,
- const hb_feature_t *user_features,
- unsigned int num_user_features)
-{
- hb_ot_map_builder_t *map = &planner->map;
-
- switch (props->direction) {
- case HB_DIRECTION_LTR:
- map->add_global_bool_feature (HB_TAG ('l','t','r','a'));
- map->add_global_bool_feature (HB_TAG ('l','t','r','m'));
- break;
- case HB_DIRECTION_RTL:
- map->add_global_bool_feature (HB_TAG ('r','t','l','a'));
- map->add_feature (HB_TAG ('r','t','l','m'), 1, F_NONE);
- break;
- case HB_DIRECTION_TTB:
- case HB_DIRECTION_BTT:
- case HB_DIRECTION_INVALID:
- default:
- break;
- }
-
- if (planner->shaper->collect_features)
- planner->shaper->collect_features (planner);
-
- for (unsigned int i = 0; i < ARRAY_LENGTH (common_features); i++)
- map->add_global_bool_feature (common_features[i]);
-
- if (HB_DIRECTION_IS_HORIZONTAL (props->direction))
- for (unsigned int i = 0; i < ARRAY_LENGTH (horizontal_features); i++)
- map->add_feature (horizontal_features[i], 1, F_GLOBAL |
- (horizontal_features[i] == HB_TAG('k','e','r','n') ?
- F_HAS_FALLBACK : F_NONE));
- else
- for (unsigned int i = 0; i < ARRAY_LENGTH (vertical_features); i++)
- map->add_feature (vertical_features[i], 1, F_GLOBAL |
- (vertical_features[i] == HB_TAG('v','k','r','n') ?
- F_HAS_FALLBACK : F_NONE));
-
- if (planner->shaper->override_features)
- planner->shaper->override_features (planner);
-
- for (unsigned int i = 0; i < num_user_features; i++) {
- const hb_feature_t *feature = &user_features[i];
- map->add_feature (feature->tag, feature->value,
- (feature->start == 0 && feature->end == (unsigned int) -1) ?
- F_GLOBAL : F_NONE);
- }
-}
-
-
-/*
- * shaper face data
- */
-
-hb_ot_shaper_face_data_t *
-_hb_ot_shaper_face_data_create (hb_face_t *face)
-{
- return _hb_ot_layout_create (face);
-}
-
-void
-_hb_ot_shaper_face_data_destroy (hb_ot_shaper_face_data_t *data)
-{
- _hb_ot_layout_destroy (data);
-}
-
-
-/*
- * shaper font data
- */
-
-struct hb_ot_shaper_font_data_t {};
-
-hb_ot_shaper_font_data_t *
-_hb_ot_shaper_font_data_create (hb_font_t *font)
-{
- return (hb_ot_shaper_font_data_t *) HB_SHAPER_DATA_SUCCEEDED;
-}
-
-void
-_hb_ot_shaper_font_data_destroy (hb_ot_shaper_font_data_t *data)
-{
-}
-
-
-/*
- * shaper shape_plan data
- */
-
-hb_ot_shaper_shape_plan_data_t *
-_hb_ot_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan,
- const hb_feature_t *user_features,
- unsigned int num_user_features)
-{
- hb_ot_shape_plan_t *plan = (hb_ot_shape_plan_t *) calloc (1, sizeof (hb_ot_shape_plan_t));
- if (unlikely (!plan))
- return NULL;
-
- hb_ot_shape_planner_t planner (shape_plan);
-
- planner.shaper = hb_ot_shape_complex_categorize (&planner);
-
- hb_ot_shape_collect_features (&planner, &shape_plan->props, user_features, num_user_features);
-
- planner.compile (*plan);
-
- if (plan->shaper->data_create) {
- plan->data = plan->shaper->data_create (plan);
- if (unlikely (!plan->data))
- return NULL;
- }
-
- return plan;
-}
-
-void
-_hb_ot_shaper_shape_plan_data_destroy (hb_ot_shaper_shape_plan_data_t *plan)
-{
- if (plan->shaper->data_destroy)
- plan->shaper->data_destroy (const_cast<void *> (plan->data));
-
- plan->finish ();
-
- free (plan);
-}
-
-
-/*
- * shaper
- */
-
-struct hb_ot_shape_context_t
-{
- hb_ot_shape_plan_t *plan;
- hb_font_t *font;
- hb_face_t *face;
- hb_buffer_t *buffer;
- const hb_feature_t *user_features;
- unsigned int num_user_features;
-
- /* Transient stuff */
- hb_direction_t target_direction;
-};
-
-
-
-/* Main shaper */
-
-
-/* Prepare */
-
-static void
-hb_set_unicode_props (hb_buffer_t *buffer)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- _hb_glyph_info_set_unicode_props (&buffer->info[i], buffer->unicode);
-}
-
-static void
-hb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font)
-{
- if (!(buffer->flags & HB_BUFFER_FLAG_BOT) ||
- _hb_glyph_info_get_general_category (&buffer->info[0]) !=
- HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
- return;
-
- hb_codepoint_t dottedcircle_glyph;
- if (!font->get_glyph (0x25CC, 0, &dottedcircle_glyph))
- return;
-
- hb_glyph_info_t dottedcircle;
- dottedcircle.codepoint = 0x25CC;
- _hb_glyph_info_set_unicode_props (&dottedcircle, buffer->unicode);
-
- buffer->clear_output ();
-
- buffer->idx = 0;
- hb_glyph_info_t info = dottedcircle;
- info.cluster = buffer->cur().cluster;
- info.mask = buffer->cur().mask;
- buffer->output_info (info);
- while (buffer->idx < buffer->len)
- buffer->next_glyph ();
-
- buffer->swap_buffers ();
-}
-
-static void
-hb_form_clusters (hb_buffer_t *buffer)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 1; i < count; i++)
- if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&buffer->info[i])))
- buffer->merge_clusters (i - 1, i + 1);
-}
-
-static void
-hb_ensure_native_direction (hb_buffer_t *buffer)
-{
- hb_direction_t direction = buffer->props.direction;
-
- /* TODO vertical:
- * The only BTT vertical script is Ogham, but it's not clear to me whether OpenType
- * Ogham fonts are supposed to be implemented BTT or not. Need to research that
- * first. */
- if ((HB_DIRECTION_IS_HORIZONTAL (direction) && direction != hb_script_get_horizontal_direction (buffer->props.script)) ||
- (HB_DIRECTION_IS_VERTICAL (direction) && direction != HB_DIRECTION_TTB))
- {
- hb_buffer_reverse_clusters (buffer);
- buffer->props.direction = HB_DIRECTION_REVERSE (buffer->props.direction);
- }
-}
-
-
-/* Substitute */
-
-static inline void
-hb_ot_mirror_chars (hb_ot_shape_context_t *c)
-{
- if (HB_DIRECTION_IS_FORWARD (c->target_direction))
- return;
-
- hb_unicode_funcs_t *unicode = c->buffer->unicode;
- hb_mask_t rtlm_mask = c->plan->map.get_1_mask (HB_TAG ('r','t','l','m'));
-
- unsigned int count = c->buffer->len;
- for (unsigned int i = 0; i < count; i++) {
- hb_codepoint_t codepoint = unicode->mirroring (c->buffer->info[i].codepoint);
- if (likely (codepoint == c->buffer->info[i].codepoint))
- c->buffer->info[i].mask |= rtlm_mask;
- else
- c->buffer->info[i].codepoint = codepoint;
- }
-}
-
-static inline void
-hb_ot_shape_setup_masks (hb_ot_shape_context_t *c)
-{
- hb_ot_map_t *map = &c->plan->map;
-
- hb_mask_t global_mask = map->get_global_mask ();
- c->buffer->reset_masks (global_mask);
-
- if (c->plan->shaper->setup_masks)
- c->plan->shaper->setup_masks (c->plan, c->buffer, c->font);
-
- for (unsigned int i = 0; i < c->num_user_features; i++)
- {
- const hb_feature_t *feature = &c->user_features[i];
- if (!(feature->start == 0 && feature->end == (unsigned int)-1)) {
- unsigned int shift;
- hb_mask_t mask = map->get_mask (feature->tag, &shift);
- c->buffer->set_masks (feature->value << shift, mask, feature->start, feature->end);
- }
- }
-}
-
-static inline void
-hb_ot_map_glyphs_fast (hb_buffer_t *buffer)
-{
- /* Normalization process sets up glyph_index(), we just copy it. */
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- buffer->info[i].codepoint = buffer->info[i].glyph_index();
-}
-
-static inline void
-hb_synthesize_glyph_classes (hb_ot_shape_context_t *c)
-{
- unsigned int count = c->buffer->len;
- for (unsigned int i = 0; i < count; i++)
- c->buffer->info[i].glyph_props() = _hb_glyph_info_get_general_category (&c->buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK ?
- HB_OT_LAYOUT_GLYPH_PROPS_MARK :
- HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH;
-}
-
-static inline void
-hb_ot_substitute_default (hb_ot_shape_context_t *c)
-{
- if (c->plan->shaper->preprocess_text)
- c->plan->shaper->preprocess_text (c->plan, c->buffer, c->font);
-
- hb_ot_mirror_chars (c);
-
- HB_BUFFER_ALLOCATE_VAR (c->buffer, glyph_index);
-
- _hb_ot_shape_normalize (c->plan, c->buffer, c->font);
-
- hb_ot_shape_setup_masks (c);
-
- /* This is unfortunate to go here, but necessary... */
- if (!hb_ot_layout_has_positioning (c->face))
- _hb_ot_shape_fallback_position_recategorize_marks (c->plan, c->font, c->buffer);
-
- hb_ot_map_glyphs_fast (c->buffer);
-
- HB_BUFFER_DEALLOCATE_VAR (c->buffer, glyph_index);
-}
-
-static inline void
-hb_ot_substitute_complex (hb_ot_shape_context_t *c)
-{
- hb_ot_layout_substitute_start (c->font, c->buffer);
-
- if (!hb_ot_layout_has_glyph_classes (c->face))
- hb_synthesize_glyph_classes (c);
-
- c->plan->substitute (c->font, c->buffer);
-
- hb_ot_layout_substitute_finish (c->font, c->buffer);
-
- return;
-}
-
-static inline void
-hb_ot_substitute (hb_ot_shape_context_t *c)
-{
- hb_ot_substitute_default (c);
- hb_ot_substitute_complex (c);
-}
-
-/* Position */
-
-static inline void
-zero_mark_widths_by_unicode (hb_buffer_t *buffer)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- if (_hb_glyph_info_get_general_category (&buffer->info[i]) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
- {
- buffer->pos[i].x_advance = 0;
- buffer->pos[i].y_advance = 0;
- }
-}
-
-static inline void
-zero_mark_widths_by_gdef (hb_buffer_t *buffer)
-{
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- if ((buffer->info[i].glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_MARK))
- {
- buffer->pos[i].x_advance = 0;
- buffer->pos[i].y_advance = 0;
- }
-}
-
-static inline void
-hb_ot_position_default (hb_ot_shape_context_t *c)
-{
- unsigned int count = c->buffer->len;
- for (unsigned int i = 0; i < count; i++)
- {
- c->font->get_glyph_advance_for_direction (c->buffer->info[i].codepoint,
- c->buffer->props.direction,
- &c->buffer->pos[i].x_advance,
- &c->buffer->pos[i].y_advance);
- c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint,
- c->buffer->props.direction,
- &c->buffer->pos[i].x_offset,
- &c->buffer->pos[i].y_offset);
-
- }
-}
-
-static inline bool
-hb_ot_position_complex (hb_ot_shape_context_t *c)
-{
- bool ret = false;
- unsigned int count = c->buffer->len;
-
- switch (c->plan->shaper->zero_width_marks)
- {
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY:
- zero_mark_widths_by_gdef (c->buffer);
- break;
-
- /* Not currently used for any shaper:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_EARLY:
- zero_mark_widths_by_unicode (c->buffer);
- break;
- */
-
- default:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE:
- break;
- }
-
- if (hb_ot_layout_has_positioning (c->face))
- {
- /* Change glyph origin to what GPOS expects, apply GPOS, change it back. */
-
- for (unsigned int i = 0; i < count; i++) {
- c->font->add_glyph_origin_for_direction (c->buffer->info[i].codepoint,
- HB_DIRECTION_LTR,
- &c->buffer->pos[i].x_offset,
- &c->buffer->pos[i].y_offset);
- }
-
- c->plan->position (c->font, c->buffer);
-
- for (unsigned int i = 0; i < count; i++) {
- c->font->subtract_glyph_origin_for_direction (c->buffer->info[i].codepoint,
- HB_DIRECTION_LTR,
- &c->buffer->pos[i].x_offset,
- &c->buffer->pos[i].y_offset);
- }
-
- ret = true;
- }
-
- switch (c->plan->shaper->zero_width_marks)
- {
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE:
- zero_mark_widths_by_unicode (c->buffer);
- break;
-
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE:
- zero_mark_widths_by_gdef (c->buffer);
- break;
-
- default:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE:
- //case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_EARLY:
- case HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY:
- break;
- }
-
- return ret;
-}
-
-static inline void
-hb_ot_position (hb_ot_shape_context_t *c)
-{
- hb_ot_layout_position_start (c->font, c->buffer);
-
- hb_ot_position_default (c);
-
- hb_bool_t fallback = !hb_ot_position_complex (c);
-
- hb_ot_layout_position_finish (c->font, c->buffer);
-
- if (fallback && c->plan->shaper->fallback_position)
- _hb_ot_shape_fallback_position (c->plan, c->font, c->buffer);
-
- if (HB_DIRECTION_IS_BACKWARD (c->buffer->props.direction))
- hb_buffer_reverse (c->buffer);
-
- /* Visual fallback goes here. */
-
- if (fallback)
- _hb_ot_shape_fallback_kern (c->plan, c->font, c->buffer);
-}
-
-
-/* Post-process */
-
-static void
-hb_ot_hide_default_ignorables (hb_ot_shape_context_t *c)
-{
- if (c->buffer->flags & HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES)
- return;
-
- hb_codepoint_t space;
- enum {
- SPACE_DONT_KNOW,
- SPACE_AVAILABLE,
- SPACE_UNAVAILABLE
- } space_status = SPACE_DONT_KNOW;
-
- unsigned int count = c->buffer->len;
- hb_glyph_info_t *info = c->buffer->info;
- hb_glyph_position_t *pos = c->buffer->pos;
- unsigned int j = 0;
- for (unsigned int i = 0; i < count; i++)
- {
- if (unlikely (!is_a_ligature (info[i]) &&
- _hb_glyph_info_is_default_ignorable (&info[i])))
- {
- if (space_status == SPACE_DONT_KNOW)
- space_status = c->font->get_glyph (' ', 0, &space) ? SPACE_AVAILABLE : SPACE_UNAVAILABLE;
-
- if (space_status == SPACE_AVAILABLE)
- {
- info[i].codepoint = space;
- pos[i].x_advance = 0;
- pos[i].y_advance = 0;
- }
- else
- continue; /* Delete it. */
- }
- if (j != i)
- {
- info[j] = info[i];
- pos[j] = pos[i];
- }
- j++;
- }
- c->buffer->len = j;
-}
-
-
-/* Pull it all together! */
-
-static void
-hb_ot_shape_internal (hb_ot_shape_context_t *c)
-{
- c->buffer->deallocate_var_all ();
-
- /* Save the original direction, we use it later. */
- c->target_direction = c->buffer->props.direction;
-
- HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props0);
- HB_BUFFER_ALLOCATE_VAR (c->buffer, unicode_props1);
-
- c->buffer->clear_output ();
-
- hb_set_unicode_props (c->buffer);
- hb_insert_dotted_circle (c->buffer, c->font);
- hb_form_clusters (c->buffer);
-
- hb_ensure_native_direction (c->buffer);
-
- hb_ot_substitute (c);
- hb_ot_position (c);
-
- hb_ot_hide_default_ignorables (c);
-
- HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props1);
- HB_BUFFER_DEALLOCATE_VAR (c->buffer, unicode_props0);
-
- c->buffer->props.direction = c->target_direction;
-
- c->buffer->deallocate_var_all ();
-}
-
-
-hb_bool_t
-_hb_ot_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_ot_shape_context_t c = {HB_SHAPER_DATA_GET (shape_plan), font, font->face, buffer, features, num_features};
- hb_ot_shape_internal (&c);
-
- return true;
-}
-
-
-void
-hb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan,
- hb_tag_t table_tag,
- hb_set_t *lookup_indexes /* OUT */)
-{
- /* XXX Does the first part always succeed? */
- HB_SHAPER_DATA_GET (shape_plan)->collect_lookups (table_tag, lookup_indexes);
-}
-
-
-/* TODO Move this to hb-ot-shape-normalize, make it do decompose, and make it public. */
-static void
-add_char (hb_font_t *font,
- hb_unicode_funcs_t *unicode,
- hb_bool_t mirror,
- hb_codepoint_t u,
- hb_set_t *glyphs)
-{
- hb_codepoint_t glyph;
- if (font->get_glyph (u, 0, &glyph))
- glyphs->add (glyph);
- if (mirror)
- {
- hb_codepoint_t m = unicode->mirroring (u);
- if (m != u && font->get_glyph (m, 0, &glyph))
- glyphs->add (glyph);
- }
-}
-
-
-void
-hb_ot_shape_glyphs_closure (hb_font_t *font,
- hb_buffer_t *buffer,
- const hb_feature_t *features,
- unsigned int num_features,
- hb_set_t *glyphs)
-{
- hb_ot_shape_plan_t plan;
-
- const char *shapers[] = {"ot", NULL};
- hb_shape_plan_t *shape_plan = hb_shape_plan_create_cached (font->face, &buffer->props,
- features, num_features, shapers);
-
- bool mirror = hb_script_get_horizontal_direction (buffer->props.script) == HB_DIRECTION_RTL;
-
- unsigned int count = buffer->len;
- for (unsigned int i = 0; i < count; i++)
- add_char (font, buffer->unicode, mirror, buffer->info[i].codepoint, glyphs);
-
- hb_set_t lookups;
- lookups.init ();
- hb_ot_shape_plan_collect_lookups (shape_plan, HB_OT_TAG_GSUB, &lookups);
-
- /* And find transitive closure. */
- hb_set_t copy;
- copy.init ();
- do {
- copy.set (glyphs);
- for (hb_codepoint_t lookup_index = -1; hb_set_next (&lookups, &lookup_index);)
- hb_ot_layout_lookup_substitute_closure (font->face, lookup_index, glyphs);
- } while (!copy.is_equal (glyphs));
-
- hb_shape_plan_destroy (shape_plan);
-}