Update to Harfbuzz 2.6.4

Quite a big change since it has been several years since
the last update. This drops the Harfbuzz source on top
of the existing code in Qt, and does the following
additional changes:

1. Deletes old source files that have been removed upstream
(everything named foo-private.hh is now renamed to just
foo.hh for instance).

2. Added a header guard to config.h because it may be
double-included.

3. Implement a memory barrier needed by hb-atomic.hh.

4. Changed the signature of hb_atomic_int_impl_add()
to take a pointer to match new upstream.

5. Updated .pro file to include new files and removed
old.

6. Updated qt_attribution.json

7. No longer disable deprecated APIs since
hb_ot_tags_from_script() is now deprecated and is used
from Qt code.

8. Updated and applied the patch in patches/ for CoreText.

9. Updated tst_qtextscriptengine::thaiWithZWJ() according to
changes in Harfbuzz and disabled it for system-harfbuzz,
since this may be an older version of harfbuzz depending on
the system.

Fixes: QTBUG-79606
Change-Id: I3f057a43ff44ee416628b75ef12fb1a221f31910
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 207 insertions, 0 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/main.cc b/src/3rdparty/harfbuzz-ng/src/main.cc
new file mode 100644
index 0000000000..983cb557db
--- /dev/null
+++ b/src/3rdparty/harfbuzz-ng/src/main.cc
@@ -0,0 +1,207 @@
+/*
+ * Copyright © 2007,2008,2009  Red Hat, 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
+ */
+
+#include "hb-static.cc"
+#include "hb-open-file.hh"
+#include "hb-ot-layout-gdef-table.hh"
+#include "hb-ot-layout-gsubgpos.hh"
+
+#ifdef HAVE_GLIB
+#include <glib.h>
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+
+
+using namespace OT;
+
+#ifdef HB_NO_OPEN
+#define hb_blob_create_from_file(x)  hb_blob_get_empty ()
+#endif
+
+int
+main (int argc, char **argv)
+{
+  if (argc != 2)
+  {
+    fprintf (stderr, "usage: %s font-file.ttf\n", argv[0]);
+    exit (1);
+  }
+
+  hb_blob_t *blob = hb_blob_create_from_file (argv[1]);
+  unsigned int len;
+  const char *font_data = hb_blob_get_data (blob, &len);
+  printf ("Opened font file %s: %d bytes long\n", argv[1], len);
+
+  hb_blob_t *font_blob = hb_sanitize_context_t().sanitize_blob<OpenTypeFontFile> (blob);
+  const OpenTypeFontFile* sanitized = font_blob->as<OpenTypeFontFile> ();
+  if (!font_blob->data)
+  {
+    printf ("Sanitization of the file wasn't successful. Exit");
+    return 1;
+  }
+  const OpenTypeFontFile& ot = *sanitized;
+
+
+  switch (ot.get_tag ())
+  {
+  case OpenTypeFontFile::TrueTypeTag:
+    printf ("OpenType font with TrueType outlines\n");
+    break;
+  case OpenTypeFontFile::CFFTag:
+    printf ("OpenType font with CFF (Type1) outlines\n");
+    break;
+  case OpenTypeFontFile::TTCTag:
+    printf ("TrueType Collection of OpenType fonts\n");
+    break;
+  case OpenTypeFontFile::TrueTag:
+    printf ("Obsolete Apple TrueType font\n");
+    break;
+  case OpenTypeFontFile::Typ1Tag:
+    printf ("Obsolete Apple Type1 font in SFNT container\n");
+    break;
+  case OpenTypeFontFile::DFontTag:
+    printf ("DFont Mac Resource Fork\n");
+    break;
+  default:
+    printf ("Unknown font format\n");
+    break;
+  }
+
+  int num_fonts = ot.get_face_count ();
+  printf ("%d font(s) found in file\n", num_fonts);
+  for (int n_font = 0; n_font < num_fonts; n_font++)
+  {
+    const OpenTypeFontFace &font = ot.get_face (n_font);
+    printf ("Font %d of %d:\n", n_font, num_fonts);
+
+    int num_tables = font.get_table_count ();
+    printf ("  %d table(s) found in font\n", num_tables);
+    for (int n_table = 0; n_table < num_tables; n_table++)
+    {
+      const OpenTypeTable &table = font.get_table (n_table);
+      printf ("  Table %2d of %2d: %.4s (0x%08x+0x%08x)\n", n_table, num_tables,
+	      (const char *) table.tag,
+	      (unsigned int) table.offset,
+	      (unsigned int) table.length);
+
+      switch (table.tag)
+      {
+
+      case HB_OT_TAG_GSUB:
+      case HB_OT_TAG_GPOS:
+	{
+
+	const GSUBGPOS &g = *CastP<GSUBGPOS> (font_data + table.offset);
+
+	int num_scripts = g.get_script_count ();
+	printf ("    %d script(s) found in table\n", num_scripts);
+	for (int n_script = 0; n_script < num_scripts; n_script++)
+	{
+	  const Script &script = g.get_script (n_script);
+	  printf ("    Script %2d of %2d: %.4s\n", n_script, num_scripts,
+		  (const char *)g.get_script_tag(n_script));
+
+	  if (!script.has_default_lang_sys())
+	    printf ("      No default language system\n");
+	  int num_langsys = script.get_lang_sys_count ();
+	  printf ("      %d language system(s) found in script\n", num_langsys);
+	  for (int n_langsys = script.has_default_lang_sys() ? -1 : 0; n_langsys < num_langsys; n_langsys++) {
+	    const LangSys &langsys = n_langsys == -1
+				   ? script.get_default_lang_sys ()
+				   : script.get_lang_sys (n_langsys);
+	    if (n_langsys == -1)
+	      printf ("      Default Language System\n");
+	    else
+	      printf ("      Language System %2d of %2d: %.4s\n", n_langsys, num_langsys,
+		      (const char *)script.get_lang_sys_tag (n_langsys));
+	    if (!langsys.has_required_feature ())
+	      printf ("        No required feature\n");
+	    else
+	      printf ("        Required feature index: %d\n",
+		      langsys.get_required_feature_index ());
+
+	    int num_features = langsys.get_feature_count ();
+	    printf ("        %d feature(s) found in language system\n", num_features);
+	    for (int n_feature = 0; n_feature < num_features; n_feature++)
+	    {
+	      printf ("        Feature index %2d of %2d: %d\n", n_feature, num_features,
+		      langsys.get_feature_index (n_feature));
+	    }
+	  }
+	}
+
+	int num_features = g.get_feature_count ();
+	printf ("    %d feature(s) found in table\n", num_features);
+	for (int n_feature = 0; n_feature < num_features; n_feature++)
+	{
+	  const Feature &feature = g.get_feature (n_feature);
+	  int num_lookups = feature.get_lookup_count ();
+	  printf ("    Feature %2d of %2d: %c%c%c%c\n", n_feature, num_features,
+		  HB_UNTAG(g.get_feature_tag(n_feature)));
+
+	  printf ("        %d lookup(s) found in feature\n", num_lookups);
+	  for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
+	    printf ("        Lookup index %2d of %2d: %d\n", n_lookup, num_lookups,
+		    feature.get_lookup_index (n_lookup));
+	  }
+	}
+
+	int num_lookups = g.get_lookup_count ();
+	printf ("    %d lookup(s) found in table\n", num_lookups);
+	for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++)
+	{
+	  const Lookup &lookup = g.get_lookup (n_lookup);
+	  printf ("    Lookup %2d of %2d: type %d, props 0x%04X\n", n_lookup, num_lookups,
+		  lookup.get_type(), lookup.get_props());
+	}
+
+	}
+	break;
+
+      case GDEF::tableTag:
+	{
+
+	const GDEF &gdef = *CastP<GDEF> (font_data + table.offset);
+
+	printf ("    Has %sglyph classes\n",
+		  gdef.has_glyph_classes () ? "" : "no ");
+	printf ("    Has %smark attachment types\n",
+		  gdef.has_mark_attachment_types () ? "" : "no ");
+	printf ("    Has %sattach points\n",
+		  gdef.has_attach_points () ? "" : "no ");
+	printf ("    Has %slig carets\n",
+		  gdef.has_lig_carets () ? "" : "no ");
+	printf ("    Has %smark sets\n",
+		  gdef.has_mark_sets () ? "" : "no ");
+	break;
+	}
+      }
+    }
+  }
+
+  return 0;
+}