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diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.37/src/hb-ft.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.37/src/hb-ft.cc
new file mode 100644
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+++ b/Build/source/libs/harfbuzz/harfbuzz-0.9.37/src/hb-ft.cc
@@ -0,0 +1,522 @@
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2009 Keith Stribley
+ *
+ * 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-private.hh"
+
+#include "hb-ft.h"
+
+#include "hb-font-private.hh"
+
+#include FT_ADVANCES_H
+#include FT_TRUETYPE_TABLES_H
+
+
+
+#ifndef HB_DEBUG_FT
+#define HB_DEBUG_FT (HB_DEBUG+0)
+#endif
+
+
+/* TODO:
+ *
+ * In general, this file does a fine job of what it's supposed to do.
+ * There are, however, things that need more work:
+ *
+ * - We don't handle any load_flags. That definitely has API implications. :(
+ * I believe hb_ft_font_create() should take load_flags input.
+ * In particular, FT_Get_Advance() without the NO_HINTING flag seems to be
+ * buggy.
+ *
+ * - We don't handle / allow for emboldening / obliqueing.
+ *
+ * - In the future, we should add constructors to create fonts in font space?
+ *
+ * - FT_Load_Glyph() is exteremely costly. Do something about it?
+ */
+
+
+static hb_bool_t
+hb_ft_get_glyph (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t unicode,
+ hb_codepoint_t variation_selector,
+ hb_codepoint_t *glyph,
+ void *user_data HB_UNUSED)
+
+{
+ FT_Face ft_face = (FT_Face) font_data;
+
+#ifdef HAVE_FT_FACE_GETCHARVARIANTINDEX
+ if (unlikely (variation_selector)) {
+ *glyph = FT_Face_GetCharVariantIndex (ft_face, unicode, variation_selector);
+ return *glyph != 0;
+ }
+#endif
+
+ *glyph = FT_Get_Char_Index (ft_face, unicode);
+ return *glyph != 0;
+}
+
+static hb_position_t
+hb_ft_get_glyph_h_advance (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
+ FT_Fixed v;
+
+ if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &v)))
+ return 0;
+
+ return (v + (1<<9)) >> 10;
+}
+
+static hb_position_t
+hb_ft_get_glyph_v_advance (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING | FT_LOAD_VERTICAL_LAYOUT;
+ FT_Fixed v;
+
+ if (unlikely (FT_Get_Advance (ft_face, glyph, load_flags, &v)))
+ return 0;
+
+ /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
+ * have a Y growing upward. Hence the extra negation. */
+ return (-v + (1<<9)) >> 10;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_h_origin (hb_font_t *font HB_UNUSED,
+ void *font_data HB_UNUSED,
+ hb_codepoint_t glyph HB_UNUSED,
+ hb_position_t *x HB_UNUSED,
+ hb_position_t *y HB_UNUSED,
+ void *user_data HB_UNUSED)
+{
+ /* We always work in the horizontal coordinates. */
+ return true;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_v_origin (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ hb_position_t *x,
+ hb_position_t *y,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
+
+ if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ return false;
+
+ /* Note: FreeType's vertical metrics grows downward while other FreeType coordinates
+ * have a Y growing upward. Hence the extra negation. */
+ *x = ft_face->glyph->metrics.horiBearingX - ft_face->glyph->metrics.vertBearingX;
+ *y = ft_face->glyph->metrics.horiBearingY - (-ft_face->glyph->metrics.vertBearingY);
+
+ return true;
+}
+
+static hb_position_t
+hb_ft_get_glyph_h_kerning (hb_font_t *font,
+ void *font_data,
+ hb_codepoint_t left_glyph,
+ hb_codepoint_t right_glyph,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ FT_Vector kerningv;
+
+ FT_Kerning_Mode mode = font->x_ppem ? FT_KERNING_DEFAULT : FT_KERNING_UNFITTED;
+ if (FT_Get_Kerning (ft_face, left_glyph, right_glyph, mode, &kerningv))
+ return 0;
+
+ return kerningv.x;
+}
+
+static hb_position_t
+hb_ft_get_glyph_v_kerning (hb_font_t *font HB_UNUSED,
+ void *font_data HB_UNUSED,
+ hb_codepoint_t top_glyph HB_UNUSED,
+ hb_codepoint_t bottom_glyph HB_UNUSED,
+ void *user_data HB_UNUSED)
+{
+ /* FreeType API doesn't support vertical kerning */
+ return 0;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_extents (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ hb_glyph_extents_t *extents,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ int load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
+
+ if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ return false;
+
+ extents->x_bearing = ft_face->glyph->metrics.horiBearingX;
+ extents->y_bearing = ft_face->glyph->metrics.horiBearingY;
+ extents->width = ft_face->glyph->metrics.width;
+ extents->height = -ft_face->glyph->metrics.height;
+ return true;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_contour_point (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ unsigned int point_index,
+ hb_position_t *x,
+ hb_position_t *y,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+ int load_flags = FT_LOAD_DEFAULT;
+
+ if (unlikely (FT_Load_Glyph (ft_face, glyph, load_flags)))
+ return false;
+
+ if (unlikely (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE))
+ return false;
+
+ if (unlikely (point_index >= (unsigned int) ft_face->glyph->outline.n_points))
+ return false;
+
+ *x = ft_face->glyph->outline.points[point_index].x;
+ *y = ft_face->glyph->outline.points[point_index].y;
+
+ return true;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_name (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ hb_codepoint_t glyph,
+ char *name, unsigned int size,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+
+ hb_bool_t ret = !FT_Get_Glyph_Name (ft_face, glyph, name, size);
+ if (ret && (size && !*name))
+ ret = false;
+
+ return ret;
+}
+
+static hb_bool_t
+hb_ft_get_glyph_from_name (hb_font_t *font HB_UNUSED,
+ void *font_data,
+ const char *name, int len, /* -1 means nul-terminated */
+ hb_codepoint_t *glyph,
+ void *user_data HB_UNUSED)
+{
+ FT_Face ft_face = (FT_Face) font_data;
+
+ if (len < 0)
+ *glyph = FT_Get_Name_Index (ft_face, (FT_String *) name);
+ else {
+ /* Make a nul-terminated version. */
+ char buf[128];
+ len = MIN (len, (int) sizeof (buf) - 1);
+ strncpy (buf, name, len);
+ buf[len] = '\0';
+ *glyph = FT_Get_Name_Index (ft_face, buf);
+ }
+
+ if (*glyph == 0)
+ {
+ /* Check whether the given name was actually the name of glyph 0. */
+ char buf[128];
+ if (!FT_Get_Glyph_Name(ft_face, 0, buf, sizeof (buf)) &&
+ len < 0 ? !strcmp (buf, name) : !strncmp (buf, name, len))
+ return true;
+ }
+
+ return *glyph != 0;
+}
+
+
+static hb_font_funcs_t *
+_hb_ft_get_font_funcs (void)
+{
+ static const hb_font_funcs_t ft_ffuncs = {
+ HB_OBJECT_HEADER_STATIC,
+
+ true, /* immutable */
+
+ {
+#define HB_FONT_FUNC_IMPLEMENT(name) hb_ft_get_##name,
+ HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_FONT_FUNC_IMPLEMENT
+ }
+ };
+
+ return const_cast<hb_font_funcs_t *> (&ft_ffuncs);
+}
+
+
+static hb_blob_t *
+reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
+{
+ FT_Face ft_face = (FT_Face) user_data;
+ FT_Byte *buffer;
+ FT_ULong length = 0;
+ FT_Error error;
+
+ /* Note: FreeType like HarfBuzz uses the NONE tag for fetching the entire blob */
+
+ error = FT_Load_Sfnt_Table (ft_face, tag, 0, NULL, &length);
+ if (error)
+ return NULL;
+
+ buffer = (FT_Byte *) malloc (length);
+ if (buffer == NULL)
+ return NULL;
+
+ error = FT_Load_Sfnt_Table (ft_face, tag, 0, buffer, &length);
+ if (error)
+ return NULL;
+
+ return hb_blob_create ((const char *) buffer, length,
+ HB_MEMORY_MODE_WRITABLE,
+ buffer, free);
+}
+
+/**
+ * hb_ft_face_create:
+ * @ft_face: (destroy destroy) (scope notified):
+ * @destroy:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_ft_face_create (FT_Face ft_face,
+ hb_destroy_func_t destroy)
+{
+ hb_face_t *face;
+
+ if (ft_face->stream->read == NULL) {
+ hb_blob_t *blob;
+
+ blob = hb_blob_create ((const char *) ft_face->stream->base,
+ (unsigned int) ft_face->stream->size,
+ /* TODO: We assume that it's mmap()'ed, but FreeType code
+ * suggests that there are cases we reach here but font is
+ * not mmapped. For example, when mmap() fails. No idea
+ * how to deal with it better here. */
+ HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE,
+ ft_face, destroy);
+ face = hb_face_create (blob, ft_face->face_index);
+ hb_blob_destroy (blob);
+ } else {
+ face = hb_face_create_for_tables (reference_table, ft_face, destroy);
+ }
+
+ hb_face_set_index (face, ft_face->face_index);
+ hb_face_set_upem (face, ft_face->units_per_EM);
+
+ return face;
+}
+
+static void
+hb_ft_face_finalize (FT_Face ft_face)
+{
+ hb_face_destroy ((hb_face_t *) ft_face->generic.data);
+}
+
+/**
+ * hb_ft_face_create_cached:
+ * @ft_face:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * Since: 1.0
+ **/
+hb_face_t *
+hb_ft_face_create_cached (FT_Face ft_face)
+{
+ if (unlikely (!ft_face->generic.data || ft_face->generic.finalizer != (FT_Generic_Finalizer) hb_ft_face_finalize))
+ {
+ if (ft_face->generic.finalizer)
+ ft_face->generic.finalizer (ft_face);
+
+ ft_face->generic.data = hb_ft_face_create (ft_face, NULL);
+ ft_face->generic.finalizer = (FT_Generic_Finalizer) hb_ft_face_finalize;
+ }
+
+ return hb_face_reference ((hb_face_t *) ft_face->generic.data);
+}
+
+static void
+_do_nothing (void)
+{
+}
+
+
+/**
+ * hb_ft_font_create:
+ * @ft_face: (destroy destroy) (scope notified):
+ * @destroy:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ * Since: 1.0
+ **/
+hb_font_t *
+hb_ft_font_create (FT_Face ft_face,
+ hb_destroy_func_t destroy)
+{
+ hb_font_t *font;
+ hb_face_t *face;
+
+ face = hb_ft_face_create (ft_face, destroy);
+ font = hb_font_create (face);
+ hb_face_destroy (face);
+ hb_font_set_funcs (font,
+ _hb_ft_get_font_funcs (),
+ ft_face, (hb_destroy_func_t) _do_nothing);
+ hb_font_set_scale (font,
+ (int) (((uint64_t) ft_face->size->metrics.x_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16),
+ (int) (((uint64_t) ft_face->size->metrics.y_scale * (uint64_t) ft_face->units_per_EM + (1<<15)) >> 16));
+ hb_font_set_ppem (font,
+ ft_face->size->metrics.x_ppem,
+ ft_face->size->metrics.y_ppem);
+
+ return font;
+}
+
+
+/* Thread-safe, lock-free, FT_Library */
+
+static FT_Library ft_library;
+
+static inline
+void free_ft_library (void)
+{
+ FT_Done_FreeType (ft_library);
+}
+
+static FT_Library
+get_ft_library (void)
+{
+retry:
+ FT_Library library = (FT_Library) hb_atomic_ptr_get (&ft_library);
+
+ if (unlikely (!library))
+ {
+ /* Not found; allocate one. */
+ if (FT_Init_FreeType (&library))
+ return NULL;
+
+ if (!hb_atomic_ptr_cmpexch (&ft_library, NULL, library)) {
+ FT_Done_FreeType (library);
+ goto retry;
+ }
+
+#ifdef HB_USE_ATEXIT
+ atexit (free_ft_library); /* First person registers atexit() callback. */
+#endif
+ }
+
+ return library;
+}
+
+static void
+_release_blob (FT_Face ft_face)
+{
+ hb_blob_destroy ((hb_blob_t *) ft_face->generic.data);
+}
+
+void
+hb_ft_font_set_funcs (hb_font_t *font)
+{
+ hb_blob_t *blob = hb_face_reference_blob (font->face);
+ unsigned int blob_length;
+ const char *blob_data = hb_blob_get_data (blob, &blob_length);
+ if (unlikely (!blob_length))
+ DEBUG_MSG (FT, font, "Font face has empty blob");
+
+ FT_Face ft_face = NULL;
+ FT_Error err = FT_New_Memory_Face (get_ft_library (),
+ (const FT_Byte *) blob_data,
+ blob_length,
+ hb_face_get_index (font->face),
+ &ft_face);
+
+ if (unlikely (err)) {
+ hb_blob_destroy (blob);
+ DEBUG_MSG (FT, font, "Font face FT_New_Memory_Face() failed");
+ return;
+ }
+
+ FT_Select_Charmap (ft_face, FT_ENCODING_UNICODE);
+
+ assert (font->y_scale >= 0);
+ FT_Set_Char_Size (ft_face,
+ font->x_scale, font->y_scale,
+ 0, 0);
+#if 0
+ font->x_ppem * 72 * 64 / font->x_scale,
+ font->y_ppem * 72 * 64 / font->y_scale);
+#endif
+
+ ft_face->generic.data = blob;
+ ft_face->generic.finalizer = (FT_Generic_Finalizer) _release_blob;
+
+ hb_font_set_funcs (font,
+ _hb_ft_get_font_funcs (),
+ ft_face,
+ (hb_destroy_func_t) FT_Done_Face);
+}
+
+FT_Face
+hb_ft_font_get_face (hb_font_t *font)
+{
+ if (font->destroy == (hb_destroy_func_t) FT_Done_Face ||
+ font->destroy == (hb_destroy_func_t) _do_nothing)
+ return (FT_Face) font->user_data;
+
+ return NULL;
+}
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