1 files changed, 0 insertions, 354 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-arabic-fallback.hh b/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-arabic-fallback.hh
deleted file mode 100644
index d98cde121c..0000000000
--- a/src/3rdparty/harfbuzz-ng/src/hb-ot-shape-complex-arabic-fallback.hh
+++ /dev/null
@@ -1,354 +0,0 @@
-/*
- * Copyright © 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
- */
-
-#ifndef HB_OT_SHAPE_COMPLEX_ARABIC_FALLBACK_HH
-#define HB_OT_SHAPE_COMPLEX_ARABIC_FALLBACK_HH
-
-#include "hb-private.hh"
-
-#include "hb-ot-shape-private.hh"
-#include "hb-ot-layout-gsub-table.hh"
-
-
-/* Features ordered the same as the entries in shaping_table rows,
- * followed by rlig.  Don't change. */
-static const hb_tag_t arabic_fallback_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'),
-  HB_TAG('r','l','i','g'),
-};
-
-static OT::SubstLookup *
-arabic_fallback_synthesize_lookup_single (const hb_ot_shape_plan_t *plan HB_UNUSED,
-					  hb_font_t *font,
-					  unsigned int feature_index)
-{
-  OT::GlyphID glyphs[SHAPING_TABLE_LAST - SHAPING_TABLE_FIRST + 1];
-  OT::GlyphID substitutes[SHAPING_TABLE_LAST - SHAPING_TABLE_FIRST + 1];
-  unsigned int num_glyphs = 0;
-
-  /* Populate arrays */
-  for (hb_codepoint_t u = SHAPING_TABLE_FIRST; u < SHAPING_TABLE_LAST + 1; u++)
-  {
-    hb_codepoint_t s = shaping_table[u - SHAPING_TABLE_FIRST][feature_index];
-    hb_codepoint_t u_glyph, s_glyph;
-
-    if (!s ||
-	!hb_font_get_glyph (font, u, 0, &u_glyph) ||
-	!hb_font_get_glyph (font, s, 0, &s_glyph) ||
-	u_glyph == s_glyph ||
-	u_glyph > 0xFFFFu || s_glyph > 0xFFFFu)
-      continue;
-
-    glyphs[num_glyphs].set (u_glyph);
-    substitutes[num_glyphs].set (s_glyph);
-
-    num_glyphs++;
-  }
-
-  if (!num_glyphs)
-    return nullptr;
-
-  /* Bubble-sort or something equally good!
-   * May not be good-enough for presidential candidate interviews, but good-enough for us... */
-  hb_stable_sort (&glyphs[0], num_glyphs, (int(*)(const OT::GlyphID*, const OT::GlyphID *)) OT::GlyphID::cmp, &substitutes[0]);
-
-  OT::Supplier<OT::GlyphID> glyphs_supplier      (glyphs, num_glyphs);
-  OT::Supplier<OT::GlyphID> substitutes_supplier (substitutes, num_glyphs);
-
-  /* Each glyph takes four bytes max, and there's some overhead. */
-  char buf[(SHAPING_TABLE_LAST - SHAPING_TABLE_FIRST + 1) * 4 + 128];
-  OT::hb_serialize_context_t c (buf, sizeof (buf));
-  OT::SubstLookup *lookup = c.start_serialize<OT::SubstLookup> ();
-  bool ret = lookup->serialize_single (&c,
-				       OT::LookupFlag::IgnoreMarks,
-				       glyphs_supplier,
-				       substitutes_supplier,
-				       num_glyphs);
-  c.end_serialize ();
-  /* TODO sanitize the results? */
-
-  return ret ? c.copy<OT::SubstLookup> () : nullptr;
-}
-
-static OT::SubstLookup *
-arabic_fallback_synthesize_lookup_ligature (const hb_ot_shape_plan_t *plan HB_UNUSED,
-					    hb_font_t *font)
-{
-  OT::GlyphID first_glyphs[ARRAY_LENGTH_CONST (ligature_table)];
-  unsigned int first_glyphs_indirection[ARRAY_LENGTH_CONST (ligature_table)];
-  unsigned int ligature_per_first_glyph_count_list[ARRAY_LENGTH_CONST (first_glyphs)];
-  unsigned int num_first_glyphs = 0;
-
-  /* We know that all our ligatures are 2-component */
-  OT::GlyphID ligature_list[ARRAY_LENGTH_CONST (first_glyphs) * ARRAY_LENGTH_CONST(ligature_table[0].ligatures)];
-  unsigned int component_count_list[ARRAY_LENGTH_CONST (ligature_list)];
-  OT::GlyphID component_list[ARRAY_LENGTH_CONST (ligature_list) * 1/* One extra component per ligature */];
-  unsigned int num_ligatures = 0;
-
-  /* Populate arrays */
-
-  /* Sort out the first-glyphs */
-  for (unsigned int first_glyph_idx = 0; first_glyph_idx < ARRAY_LENGTH (first_glyphs); first_glyph_idx++)
-  {
-    hb_codepoint_t first_u = ligature_table[first_glyph_idx].first;
-    hb_codepoint_t first_glyph;
-    if (!hb_font_get_glyph (font, first_u, 0, &first_glyph))
-      continue;
-    first_glyphs[num_first_glyphs].set (first_glyph);
-    ligature_per_first_glyph_count_list[num_first_glyphs] = 0;
-    first_glyphs_indirection[num_first_glyphs] = first_glyph_idx;
-    num_first_glyphs++;
-  }
-  hb_stable_sort (&first_glyphs[0], num_first_glyphs, (int(*)(const OT::GlyphID*, const OT::GlyphID *)) OT::GlyphID::cmp, &first_glyphs_indirection[0]);
-
-  /* Now that the first-glyphs are sorted, walk again, populate ligatures. */
-  for (unsigned int i = 0; i < num_first_glyphs; i++)
-  {
-    unsigned int first_glyph_idx = first_glyphs_indirection[i];
-
-    for (unsigned int second_glyph_idx = 0; second_glyph_idx < ARRAY_LENGTH (ligature_table[0].ligatures); second_glyph_idx++)
-    {
-      hb_codepoint_t second_u   = ligature_table[first_glyph_idx].ligatures[second_glyph_idx].second;
-      hb_codepoint_t ligature_u = ligature_table[first_glyph_idx].ligatures[second_glyph_idx].ligature;
-      hb_codepoint_t second_glyph, ligature_glyph;
-      if (!second_u ||
-	  !hb_font_get_glyph (font, second_u,   0, &second_glyph) ||
-	  !hb_font_get_glyph (font, ligature_u, 0, &ligature_glyph))
-	continue;
-
-      ligature_per_first_glyph_count_list[i]++;
-
-      ligature_list[num_ligatures].set (ligature_glyph);
-      component_count_list[num_ligatures] = 2;
-      component_list[num_ligatures].set (second_glyph);
-      num_ligatures++;
-    }
-  }
-
-  if (!num_ligatures)
-    return nullptr;
-
-  OT::Supplier<OT::GlyphID>   first_glyphs_supplier                      (first_glyphs, num_first_glyphs);
-  OT::Supplier<unsigned int > ligature_per_first_glyph_count_supplier    (ligature_per_first_glyph_count_list, num_first_glyphs);
-  OT::Supplier<OT::GlyphID>   ligatures_supplier                         (ligature_list, num_ligatures);
-  OT::Supplier<unsigned int > component_count_supplier                   (component_count_list, num_ligatures);
-  OT::Supplier<OT::GlyphID>   component_supplier                         (component_list, num_ligatures);
-
-  /* 16 bytes per ligature ought to be enough... */
-  char buf[ARRAY_LENGTH_CONST (ligature_list) * 16 + 128];
-  OT::hb_serialize_context_t c (buf, sizeof (buf));
-  OT::SubstLookup *lookup = c.start_serialize<OT::SubstLookup> ();
-  bool ret = lookup->serialize_ligature (&c,
-					 OT::LookupFlag::IgnoreMarks,
-					 first_glyphs_supplier,
-					 ligature_per_first_glyph_count_supplier,
-					 num_first_glyphs,
-					 ligatures_supplier,
-					 component_count_supplier,
-					 component_supplier);
-
-  c.end_serialize ();
-  /* TODO sanitize the results? */
-
-  return ret ? c.copy<OT::SubstLookup> () : nullptr;
-}
-
-static OT::SubstLookup *
-arabic_fallback_synthesize_lookup (const hb_ot_shape_plan_t *plan,
-				   hb_font_t *font,
-				   unsigned int feature_index)
-{
-  if (feature_index < 4)
-    return arabic_fallback_synthesize_lookup_single (plan, font, feature_index);
-  else
-    return arabic_fallback_synthesize_lookup_ligature (plan, font);
-}
-
-#define ARABIC_FALLBACK_MAX_LOOKUPS 5
-
-struct arabic_fallback_plan_t
-{
-  ASSERT_POD ();
-
-  unsigned int num_lookups;
-  bool free_lookups;
-
-  hb_mask_t mask_array[ARABIC_FALLBACK_MAX_LOOKUPS];
-  OT::SubstLookup *lookup_array[ARABIC_FALLBACK_MAX_LOOKUPS];
-  hb_ot_layout_lookup_accelerator_t accel_array[ARABIC_FALLBACK_MAX_LOOKUPS];
-};
-
-static const arabic_fallback_plan_t arabic_fallback_plan_nil = {};
-
-#if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(HB_NO_WIN1256)
-#define HB_WITH_WIN1256
-#endif
-
-#ifdef HB_WITH_WIN1256
-#include "hb-ot-shape-complex-arabic-win1256.hh"
-#endif
-
-struct ManifestLookup {
-  OT::Tag tag;
-  OT::OffsetTo<OT::SubstLookup> lookupOffset;
-};
-typedef OT::ArrayOf<ManifestLookup> Manifest;
-
-static bool
-arabic_fallback_plan_init_win1256 (arabic_fallback_plan_t *fallback_plan,
-				   const hb_ot_shape_plan_t *plan,
-				   hb_font_t *font)
-{
-#ifdef HB_WITH_WIN1256
-  /* Does this font look like it's Windows-1256-encoded? */
-  hb_codepoint_t g;
-  if (!(hb_font_get_glyph (font, 0x0627u, 0, &g) && g == 199 /* ALEF */ &&
-	hb_font_get_glyph (font, 0x0644u, 0, &g) && g == 225 /* LAM */ &&
-	hb_font_get_glyph (font, 0x0649u, 0, &g) && g == 236 /* ALEF MAKSURA */ &&
-	hb_font_get_glyph (font, 0x064Au, 0, &g) && g == 237 /* YEH */ &&
-	hb_font_get_glyph (font, 0x0652u, 0, &g) && g == 250 /* SUKUN */))
-    return false;
-
-  const Manifest &manifest = reinterpret_cast<const Manifest&> (arabic_win1256_gsub_lookups.manifest);
-  static_assert (sizeof (arabic_win1256_gsub_lookups.manifestData) / sizeof (ManifestLookup)
-		 <= ARABIC_FALLBACK_MAX_LOOKUPS, "");
-  /* TODO sanitize the table? */
-
-  unsigned j = 0;
-  unsigned int count = manifest.len;
-  for (unsigned int i = 0; i < count; i++)
-  {
-    fallback_plan->mask_array[j] = plan->map.get_1_mask (manifest[i].tag);
-    if (fallback_plan->mask_array[j])
-    {
-      fallback_plan->lookup_array[j] = const_cast<OT::SubstLookup*> (&(&manifest+manifest[i].lookupOffset));
-      if (fallback_plan->lookup_array[j])
-      {
-	fallback_plan->accel_array[j].init (*fallback_plan->lookup_array[j]);
-	j++;
-      }
-    }
-  }
-
-  fallback_plan->num_lookups = j;
-  fallback_plan->free_lookups = false;
-
-  return j > 0;
-#else
-  return false;
-#endif
-}
-
-static bool
-arabic_fallback_plan_init_unicode (arabic_fallback_plan_t *fallback_plan,
-				   const hb_ot_shape_plan_t *plan,
-				   hb_font_t *font)
-{
-  static_assert ((ARRAY_LENGTH_CONST(arabic_fallback_features) <= ARABIC_FALLBACK_MAX_LOOKUPS), "");
-  unsigned int j = 0;
-  for (unsigned int i = 0; i < ARRAY_LENGTH(arabic_fallback_features) ; i++)
-  {
-    fallback_plan->mask_array[j] = plan->map.get_1_mask (arabic_fallback_features[i]);
-    if (fallback_plan->mask_array[j])
-    {
-      fallback_plan->lookup_array[j] = arabic_fallback_synthesize_lookup (plan, font, i);
-      if (fallback_plan->lookup_array[j])
-      {
-	fallback_plan->accel_array[j].init (*fallback_plan->lookup_array[j]);
-	j++;
-      }
-    }
-  }
-
-  fallback_plan->num_lookups = j;
-  fallback_plan->free_lookups = true;
-
-  return j > 0;
-}
-
-static arabic_fallback_plan_t *
-arabic_fallback_plan_create (const hb_ot_shape_plan_t *plan,
-			     hb_font_t *font)
-{
-  arabic_fallback_plan_t *fallback_plan = (arabic_fallback_plan_t *) calloc (1, sizeof (arabic_fallback_plan_t));
-  if (unlikely (!fallback_plan))
-    return const_cast<arabic_fallback_plan_t *> (&arabic_fallback_plan_nil);
-
-  fallback_plan->num_lookups = 0;
-  fallback_plan->free_lookups = false;
-
-  /* Try synthesizing GSUB table using Unicode Arabic Presentation Forms,
-   * in case the font has cmap entries for the presentation-forms characters. */
-  if (arabic_fallback_plan_init_unicode (fallback_plan, plan, font))
-    return fallback_plan;
-
-  /* See if this looks like a Windows-1256-encoded font.  If it does, use a
-   * hand-coded GSUB table. */
-  if (arabic_fallback_plan_init_win1256 (fallback_plan, plan, font))
-    return fallback_plan;
-
-  free (fallback_plan);
-  return const_cast<arabic_fallback_plan_t *> (&arabic_fallback_plan_nil);
-}
-
-static void
-arabic_fallback_plan_destroy (arabic_fallback_plan_t *fallback_plan)
-{
-  if (!fallback_plan || fallback_plan == &arabic_fallback_plan_nil)
-    return;
-
-  for (unsigned int i = 0; i < fallback_plan->num_lookups; i++)
-    if (fallback_plan->lookup_array[i])
-    {
-      fallback_plan->accel_array[i].fini ();
-      if (fallback_plan->free_lookups)
-	free (fallback_plan->lookup_array[i]);
-    }
-
-  free (fallback_plan);
-}
-
-static void
-arabic_fallback_plan_shape (arabic_fallback_plan_t *fallback_plan,
-			    hb_font_t *font,
-			    hb_buffer_t *buffer)
-{
-  OT::hb_apply_context_t c (0, font, buffer);
-  for (unsigned int i = 0; i < fallback_plan->num_lookups; i++)
-    if (fallback_plan->lookup_array[i]) {
-      c.set_lookup_mask (fallback_plan->mask_array[i]);
-      hb_ot_layout_substitute_lookup (&c,
-				      *fallback_plan->lookup_array[i],
-				      fallback_plan->accel_array[i]);
-    }
-}
-
-
-#endif /* HB_OT_SHAPE_COMPLEX_ARABIC_FALLBACK_HH */