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diff --git a/thirdparty/harfbuzz/src/hb-face.cc b/thirdparty/harfbuzz/src/hb-face.cc
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+/*
+ * Copyright © 2009 Red Hat, Inc.
+ * 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.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#include "hb.hh"
+
+#include "hb-face.hh"
+#include "hb-blob.hh"
+#include "hb-open-file.hh"
+#include "hb-ot-face.hh"
+#include "hb-ot-cmap-table.hh"
+
+
+/**
+ * SECTION:hb-face
+ * @title: hb-face
+ * @short_description: Font face objects
+ * @include: hb.h
+ *
+ * Font face is objects represent a single face in a font family.
+ * More exactly, a font face represents a single face in a binary font file.
+ * Font faces are typically built from a binary blob and a face index.
+ * Font faces are used to create fonts.
+ **/
+
+
+/**
+ * hb_face_count:
+ * @blob: a blob.
+ *
+ * Get number of faces in a blob.
+ *
+ * Return value: Number of faces in @blob
+ *
+ * Since: 1.7.7
+ **/
+unsigned int
+hb_face_count (hb_blob_t *blob)
+{
+ if (unlikely (!blob))
+ return 0;
+
+ /* TODO We shouldn't be sanitizing blob. Port to run sanitizer and return if not sane. */
+ /* Make API signature const after. */
+ hb_blob_t *sanitized = hb_sanitize_context_t ().sanitize_blob<OT::OpenTypeFontFile> (hb_blob_reference (blob));
+ const OT::OpenTypeFontFile& ot = *sanitized->as<OT::OpenTypeFontFile> ();
+ unsigned int ret = ot.get_face_count ();
+ hb_blob_destroy (sanitized);
+
+ return ret;
+}
+
+/*
+ * hb_face_t
+ */
+
+DEFINE_NULL_INSTANCE (hb_face_t) =
+{
+ HB_OBJECT_HEADER_STATIC,
+
+ nullptr, /* reference_table_func */
+ nullptr, /* user_data */
+ nullptr, /* destroy */
+
+ 0, /* index */
+ HB_ATOMIC_INT_INIT (1000), /* upem */
+ HB_ATOMIC_INT_INIT (0), /* num_glyphs */
+
+ /* Zero for the rest is fine. */
+};
+
+
+/**
+ * hb_face_create_for_tables:
+ * @reference_table_func: (closure user_data) (destroy destroy) (scope notified):
+ * @user_data:
+ * @destroy:
+ *
+ *
+ *
+ * Return value: (transfer full)
+ *
+ * Since: 0.9.2
+ **/
+hb_face_t *
+hb_face_create_for_tables (hb_reference_table_func_t reference_table_func,
+ void *user_data,
+ hb_destroy_func_t destroy)
+{
+ hb_face_t *face;
+
+ if (!reference_table_func || !(face = hb_object_create<hb_face_t> ())) {
+ if (destroy)
+ destroy (user_data);
+ return hb_face_get_empty ();
+ }
+
+ face->reference_table_func = reference_table_func;
+ face->user_data = user_data;
+ face->destroy = destroy;
+
+ face->num_glyphs.set_relaxed (-1);
+
+ face->data.init0 (face);
+ face->table.init0 (face);
+
+ return face;
+}
+
+
+typedef struct hb_face_for_data_closure_t {
+ hb_blob_t *blob;
+ unsigned int index;
+} hb_face_for_data_closure_t;
+
+static hb_face_for_data_closure_t *
+_hb_face_for_data_closure_create (hb_blob_t *blob, unsigned int index)
+{
+ hb_face_for_data_closure_t *closure;
+
+ closure = (hb_face_for_data_closure_t *) calloc (1, sizeof (hb_face_for_data_closure_t));
+ if (unlikely (!closure))
+ return nullptr;
+
+ closure->blob = blob;
+ closure->index = index;
+
+ return closure;
+}
+
+static void
+_hb_face_for_data_closure_destroy (void *data)
+{
+ hb_face_for_data_closure_t *closure = (hb_face_for_data_closure_t *) data;
+
+ hb_blob_destroy (closure->blob);
+ free (closure);
+}
+
+static hb_blob_t *
+_hb_face_for_data_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
+{
+ hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) user_data;
+
+ if (tag == HB_TAG_NONE)
+ return hb_blob_reference (data->blob);
+
+ const OT::OpenTypeFontFile &ot_file = *data->blob->as<OT::OpenTypeFontFile> ();
+ unsigned int base_offset;
+ const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index, &base_offset);
+
+ const OT::OpenTypeTable &table = ot_face.get_table_by_tag (tag);
+
+ hb_blob_t *blob = hb_blob_create_sub_blob (data->blob, base_offset + table.offset, table.length);
+
+ return blob;
+}
+
+/**
+ * hb_face_create: (Xconstructor)
+ * @blob:
+ * @index:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 0.9.2
+ **/
+hb_face_t *
+hb_face_create (hb_blob_t *blob,
+ unsigned int index)
+{
+ hb_face_t *face;
+
+ if (unlikely (!blob))
+ blob = hb_blob_get_empty ();
+
+ blob = hb_sanitize_context_t ().sanitize_blob<OT::OpenTypeFontFile> (hb_blob_reference (blob));
+
+ hb_face_for_data_closure_t *closure = _hb_face_for_data_closure_create (blob, index);
+
+ if (unlikely (!closure))
+ {
+ hb_blob_destroy (blob);
+ return hb_face_get_empty ();
+ }
+
+ face = hb_face_create_for_tables (_hb_face_for_data_reference_table,
+ closure,
+ _hb_face_for_data_closure_destroy);
+
+ face->index = index;
+
+ return face;
+}
+
+/**
+ * hb_face_get_empty:
+ *
+ *
+ *
+ * Return value: (transfer full)
+ *
+ * Since: 0.9.2
+ **/
+hb_face_t *
+hb_face_get_empty ()
+{
+ return const_cast<hb_face_t *> (&Null (hb_face_t));
+}
+
+
+/**
+ * hb_face_reference: (skip)
+ * @face: a face.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.2
+ **/
+hb_face_t *
+hb_face_reference (hb_face_t *face)
+{
+ return hb_object_reference (face);
+}
+
+/**
+ * hb_face_destroy: (skip)
+ * @face: a face.
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+void
+hb_face_destroy (hb_face_t *face)
+{
+ if (!hb_object_destroy (face)) return;
+
+ for (hb_face_t::plan_node_t *node = face->shape_plans; node; )
+ {
+ hb_face_t::plan_node_t *next = node->next;
+ hb_shape_plan_destroy (node->shape_plan);
+ free (node);
+ node = next;
+ }
+
+ face->data.fini ();
+ face->table.fini ();
+
+ if (face->destroy)
+ face->destroy (face->user_data);
+
+ free (face);
+}
+
+/**
+ * hb_face_set_user_data: (skip)
+ * @face: a face.
+ * @key:
+ * @data:
+ * @destroy:
+ * @replace:
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.2
+ **/
+hb_bool_t
+hb_face_set_user_data (hb_face_t *face,
+ hb_user_data_key_t *key,
+ void * data,
+ hb_destroy_func_t destroy,
+ hb_bool_t replace)
+{
+ return hb_object_set_user_data (face, key, data, destroy, replace);
+}
+
+/**
+ * hb_face_get_user_data: (skip)
+ * @face: a face.
+ * @key:
+ *
+ *
+ *
+ * Return value: (transfer none):
+ *
+ * Since: 0.9.2
+ **/
+void *
+hb_face_get_user_data (const hb_face_t *face,
+ hb_user_data_key_t *key)
+{
+ return hb_object_get_user_data (face, key);
+}
+
+/**
+ * hb_face_make_immutable:
+ * @face: a face.
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+void
+hb_face_make_immutable (hb_face_t *face)
+{
+ if (hb_object_is_immutable (face))
+ return;
+
+ hb_object_make_immutable (face);
+}
+
+/**
+ * hb_face_is_immutable:
+ * @face: a face.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.2
+ **/
+hb_bool_t
+hb_face_is_immutable (const hb_face_t *face)
+{
+ return hb_object_is_immutable (face);
+}
+
+
+/**
+ * hb_face_reference_table:
+ * @face: a face.
+ * @tag:
+ *
+ *
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 0.9.2
+ **/
+hb_blob_t *
+hb_face_reference_table (const hb_face_t *face,
+ hb_tag_t tag)
+{
+ if (unlikely (tag == HB_TAG_NONE))
+ return hb_blob_get_empty ();
+
+ return face->reference_table (tag);
+}
+
+/**
+ * hb_face_reference_blob:
+ * @face: a face.
+ *
+ *
+ *
+ * Return value: (transfer full):
+ *
+ * Since: 0.9.2
+ **/
+hb_blob_t *
+hb_face_reference_blob (hb_face_t *face)
+{
+ return face->reference_table (HB_TAG_NONE);
+}
+
+/**
+ * hb_face_set_index:
+ * @face: a face.
+ * @index:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+void
+hb_face_set_index (hb_face_t *face,
+ unsigned int index)
+{
+ if (hb_object_is_immutable (face))
+ return;
+
+ face->index = index;
+}
+
+/**
+ * hb_face_get_index:
+ * @face: a face.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.2
+ **/
+unsigned int
+hb_face_get_index (const hb_face_t *face)
+{
+ return face->index;
+}
+
+/**
+ * hb_face_set_upem:
+ * @face: a face.
+ * @upem:
+ *
+ *
+ *
+ * Since: 0.9.2
+ **/
+void
+hb_face_set_upem (hb_face_t *face,
+ unsigned int upem)
+{
+ if (hb_object_is_immutable (face))
+ return;
+
+ face->upem.set_relaxed (upem);
+}
+
+/**
+ * hb_face_get_upem:
+ * @face: a face.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.2
+ **/
+unsigned int
+hb_face_get_upem (const hb_face_t *face)
+{
+ return face->get_upem ();
+}
+
+/**
+ * hb_face_set_glyph_count:
+ * @face: a face.
+ * @glyph_count:
+ *
+ *
+ *
+ * Since: 0.9.7
+ **/
+void
+hb_face_set_glyph_count (hb_face_t *face,
+ unsigned int glyph_count)
+{
+ if (hb_object_is_immutable (face))
+ return;
+
+ face->num_glyphs.set_relaxed (glyph_count);
+}
+
+/**
+ * hb_face_get_glyph_count:
+ * @face: a face.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 0.9.7
+ **/
+unsigned int
+hb_face_get_glyph_count (const hb_face_t *face)
+{
+ return face->get_num_glyphs ();
+}
+
+/**
+ * hb_face_get_table_tags:
+ * @face: a face.
+ * @start_offset: index of first tag to return.
+ * @table_count: input length of @table_tags array, output number of items written.
+ * @table_tags: array to write tags into.
+ *
+ * Retrieves table tags for a face, if possible.
+ *
+ * Return value: total number of tables, or 0 if not possible to list.
+ *
+ * Since: 1.6.0
+ **/
+unsigned int
+hb_face_get_table_tags (const hb_face_t *face,
+ unsigned int start_offset,
+ unsigned int *table_count, /* IN/OUT */
+ hb_tag_t *table_tags /* OUT */)
+{
+ if (face->destroy != (hb_destroy_func_t) _hb_face_for_data_closure_destroy)
+ {
+ if (table_count)
+ *table_count = 0;
+ return 0;
+ }
+
+ hb_face_for_data_closure_t *data = (hb_face_for_data_closure_t *) face->user_data;
+
+ const OT::OpenTypeFontFile &ot_file = *data->blob->as<OT::OpenTypeFontFile> ();
+ const OT::OpenTypeFontFace &ot_face = ot_file.get_face (data->index);
+
+ return ot_face.get_table_tags (start_offset, table_count, table_tags);
+}
+
+
+/*
+ * Character set.
+ */
+
+
+#ifndef HB_NO_FACE_COLLECT_UNICODES
+/**
+ * hb_face_collect_unicodes:
+ * @face: font face.
+ * @out: set to add Unicode characters covered by @face to.
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_unicodes (hb_face_t *face,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_unicodes (out, face->get_num_glyphs ());
+}
+/**
+ * hb_face_collect_variation_selectors:
+ * @face: font face.
+ * @out: set to add Variation Selector characters covered by @face to.
+ *
+ *
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_variation_selectors (hb_face_t *face,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_variation_selectors (out);
+}
+/**
+ * hb_face_collect_variation_unicodes:
+ * @face: font face.
+ * @out: set to add Unicode characters for @variation_selector covered by @face to.
+ *
+ *
+ *
+ * Since: 1.9.0
+ */
+void
+hb_face_collect_variation_unicodes (hb_face_t *face,
+ hb_codepoint_t variation_selector,
+ hb_set_t *out)
+{
+ face->table.cmap->collect_variation_unicodes (variation_selector, out);
+}
+#endif
+
+
+/*
+ * face-builder: A face that has add_table().
+ */
+
+struct hb_face_builder_data_t
+{
+ struct table_entry_t
+ {
+ int cmp (hb_tag_t t) const
+ {
+ if (t < tag) return -1;
+ if (t > tag) return -1;
+ return 0;
+ }
+
+ hb_tag_t tag;
+ hb_blob_t *blob;
+ };
+
+ hb_vector_t<table_entry_t> tables;
+};
+
+static hb_face_builder_data_t *
+_hb_face_builder_data_create ()
+{
+ hb_face_builder_data_t *data = (hb_face_builder_data_t *) calloc (1, sizeof (hb_face_builder_data_t));
+ if (unlikely (!data))
+ return nullptr;
+
+ data->tables.init ();
+
+ return data;
+}
+
+static void
+_hb_face_builder_data_destroy (void *user_data)
+{
+ hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data;
+
+ for (unsigned int i = 0; i < data->tables.length; i++)
+ hb_blob_destroy (data->tables[i].blob);
+
+ data->tables.fini ();
+
+ free (data);
+}
+
+static hb_blob_t *
+_hb_face_builder_data_reference_blob (hb_face_builder_data_t *data)
+{
+
+ unsigned int table_count = data->tables.length;
+ unsigned int face_length = table_count * 16 + 12;
+
+ for (unsigned int i = 0; i < table_count; i++)
+ face_length += hb_ceil_to_4 (hb_blob_get_length (data->tables[i].blob));
+
+ char *buf = (char *) malloc (face_length);
+ if (unlikely (!buf))
+ return nullptr;
+
+ hb_serialize_context_t c (buf, face_length);
+ c.propagate_error (data->tables);
+ OT::OpenTypeFontFile *f = c.start_serialize<OT::OpenTypeFontFile> ();
+
+ bool is_cff = data->tables.lsearch (HB_TAG ('C','F','F',' ')) || data->tables.lsearch (HB_TAG ('C','F','F','2'));
+ hb_tag_t sfnt_tag = is_cff ? OT::OpenTypeFontFile::CFFTag : OT::OpenTypeFontFile::TrueTypeTag;
+
+ bool ret = f->serialize_single (&c, sfnt_tag, data->tables.as_array ());
+
+ c.end_serialize ();
+
+ if (unlikely (!ret))
+ {
+ free (buf);
+ return nullptr;
+ }
+
+ return hb_blob_create (buf, face_length, HB_MEMORY_MODE_WRITABLE, buf, free);
+}
+
+static hb_blob_t *
+_hb_face_builder_reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
+{
+ hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data;
+
+ if (!tag)
+ return _hb_face_builder_data_reference_blob (data);
+
+ hb_face_builder_data_t::table_entry_t *entry = data->tables.lsearch (tag);
+ if (entry)
+ return hb_blob_reference (entry->blob);
+
+ return nullptr;
+}
+
+
+/**
+ * hb_face_builder_create:
+ *
+ * Creates a #hb_face_t that can be used with hb_face_builder_add_table().
+ * After tables are added to the face, it can be compiled to a binary
+ * font file by calling hb_face_reference_blob().
+ *
+ * Return value: (transfer full): New face.
+ *
+ * Since: 1.9.0
+ **/
+hb_face_t *
+hb_face_builder_create ()
+{
+ hb_face_builder_data_t *data = _hb_face_builder_data_create ();
+ if (unlikely (!data)) return hb_face_get_empty ();
+
+ return hb_face_create_for_tables (_hb_face_builder_reference_table,
+ data,
+ _hb_face_builder_data_destroy);
+}
+
+/**
+ * hb_face_builder_add_table:
+ *
+ * Add table for @tag with data provided by @blob to the face. @face must
+ * be created using hb_face_builder_create().
+ *
+ * Since: 1.9.0
+ **/
+hb_bool_t
+hb_face_builder_add_table (hb_face_t *face, hb_tag_t tag, hb_blob_t *blob)
+{
+ if (unlikely (face->destroy != (hb_destroy_func_t) _hb_face_builder_data_destroy))
+ return false;
+
+ hb_face_builder_data_t *data = (hb_face_builder_data_t *) face->user_data;
+
+ hb_face_builder_data_t::table_entry_t *entry = data->tables.push ();
+ if (data->tables.in_error())
+ return false;
+
+ entry->tag = tag;
+ entry->blob = hb_blob_reference (blob);
+
+ return true;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 11:51:44 +0000