[Complex Text Layouts] Add third-party TextServer dependencies (ICU, HarfBuzz, Graphite).

thirdparty/harfbuzz/src/hb-subset-input.cc

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+/*
+ * Copyright © 2018  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): Garret Rieger, Rod Sheeter, Behdad Esfahbod
+ */
+
+#include "hb-subset.hh"
+#include "hb-set.hh"
+
+/**
+ * hb_subset_input_create_or_fail:
+ *
+ * Return value: New subset input.
+ *
+ * Since: 1.8.0
+ **/
+hb_subset_input_t *
+hb_subset_input_create_or_fail ()
+{
+  hb_subset_input_t *input = hb_object_create<hb_subset_input_t>();
+
+  if (unlikely (!input))
+    return nullptr;
+
+  input->unicodes = hb_set_create ();
+  input->glyphs = hb_set_create ();
+  input->name_ids = hb_set_create ();
+  hb_set_add_range (input->name_ids, 0, 6);
+  input->name_languages = hb_set_create ();
+  hb_set_add (input->name_languages, 0x0409);
+  input->drop_tables = hb_set_create ();
+  input->drop_hints = false;
+  input->desubroutinize = false;
+  input->retain_gids = false;
+  input->name_legacy = false;
+
+  hb_tag_t default_drop_tables[] = {
+    // Layout disabled by default
+    HB_TAG ('G', 'S', 'U', 'B'),
+    HB_TAG ('G', 'P', 'O', 'S'),
+    HB_TAG ('G', 'D', 'E', 'F'),
+    HB_TAG ('m', 'o', 'r', 'x'),
+    HB_TAG ('m', 'o', 'r', 't'),
+    HB_TAG ('k', 'e', 'r', 'x'),
+    HB_TAG ('k', 'e', 'r', 'n'),
+
+    // Copied from fontTools:
+    HB_TAG ('B', 'A', 'S', 'E'),
+    HB_TAG ('J', 'S', 'T', 'F'),
+    HB_TAG ('D', 'S', 'I', 'G'),
+    HB_TAG ('E', 'B', 'D', 'T'),
+    HB_TAG ('E', 'B', 'L', 'C'),
+    HB_TAG ('E', 'B', 'S', 'C'),
+    HB_TAG ('S', 'V', 'G', ' '),
+    HB_TAG ('P', 'C', 'L', 'T'),
+    HB_TAG ('L', 'T', 'S', 'H'),
+    // Graphite tables
+    HB_TAG ('F', 'e', 'a', 't'),
+    HB_TAG ('G', 'l', 'a', 't'),
+    HB_TAG ('G', 'l', 'o', 'c'),
+    HB_TAG ('S', 'i', 'l', 'f'),
+    HB_TAG ('S', 'i', 'l', 'l'),
+  };
+
+  input->drop_tables->add_array (default_drop_tables, ARRAY_LENGTH (default_drop_tables));
+
+  return input;
+}
+
+/**
+ * hb_subset_input_reference: (skip)
+ * @subset_input: a subset_input.
+ *
+ *
+ *
+ * Return value:
+ *
+ * Since: 1.8.0
+ **/
+hb_subset_input_t *
+hb_subset_input_reference (hb_subset_input_t *subset_input)
+{
+  return hb_object_reference (subset_input);
+}
+
+/**
+ * hb_subset_input_destroy:
+ * @subset_input: a subset_input.
+ *
+ * Since: 1.8.0
+ **/
+void
+hb_subset_input_destroy (hb_subset_input_t *subset_input)
+{
+  if (!hb_object_destroy (subset_input)) return;
+
+  hb_set_destroy (subset_input->unicodes);
+  hb_set_destroy (subset_input->glyphs);
+  hb_set_destroy (subset_input->name_ids);
+  hb_set_destroy (subset_input->name_languages);
+  hb_set_destroy (subset_input->drop_tables);
+
+  free (subset_input);
+}
+
+/**
+ * hb_subset_input_unicode_set:
+ * @subset_input: a subset_input.
+ *
+ * Since: 1.8.0
+ **/
+HB_EXTERN hb_set_t *
+hb_subset_input_unicode_set (hb_subset_input_t *subset_input)
+{
+  return subset_input->unicodes;
+}
+
+/**
+ * hb_subset_input_glyph_set:
+ * @subset_input: a subset_input.
+ *
+ * Since: 1.8.0
+ **/
+HB_EXTERN hb_set_t *
+hb_subset_input_glyph_set (hb_subset_input_t *subset_input)
+{
+  return subset_input->glyphs;
+}
+
+HB_EXTERN hb_set_t *
+hb_subset_input_nameid_set (hb_subset_input_t *subset_input)
+{
+  return subset_input->name_ids;
+}
+
+HB_EXTERN hb_set_t *
+hb_subset_input_namelangid_set (hb_subset_input_t *subset_input)
+{
+  return subset_input->name_languages;
+}
+
+HB_EXTERN hb_set_t *
+hb_subset_input_drop_tables_set (hb_subset_input_t *subset_input)
+{
+  return subset_input->drop_tables;
+}
+
+HB_EXTERN void
+hb_subset_input_set_drop_hints (hb_subset_input_t *subset_input,
+				hb_bool_t drop_hints)
+{
+  subset_input->drop_hints = drop_hints;
+}
+
+HB_EXTERN hb_bool_t
+hb_subset_input_get_drop_hints (hb_subset_input_t *subset_input)
+{
+  return subset_input->drop_hints;
+}
+
+HB_EXTERN void
+hb_subset_input_set_desubroutinize (hb_subset_input_t *subset_input,
+				    hb_bool_t desubroutinize)
+{
+  subset_input->desubroutinize = desubroutinize;
+}
+
+HB_EXTERN hb_bool_t
+hb_subset_input_get_desubroutinize (hb_subset_input_t *subset_input)
+{
+  return subset_input->desubroutinize;
+}
+
+/**
+ * hb_subset_input_set_retain_gids:
+ * @subset_input: a subset_input.
+ * @retain_gids: If true the subsetter will not renumber glyph ids.
+ * Since: 2.4.0
+ **/
+HB_EXTERN void
+hb_subset_input_set_retain_gids (hb_subset_input_t *subset_input,
+				 hb_bool_t retain_gids)
+{
+  subset_input->retain_gids = retain_gids;
+}
+
+/**
+ * hb_subset_input_get_retain_gids:
+ * Returns: value of retain_gids.
+ * Since: 2.4.0
+ **/
+HB_EXTERN hb_bool_t
+hb_subset_input_get_retain_gids (hb_subset_input_t *subset_input)
+{
+  return subset_input->retain_gids;
+}
+
+HB_EXTERN void
+hb_subset_input_set_name_legacy (hb_subset_input_t *subset_input,
+				 hb_bool_t name_legacy)
+{
+  subset_input->name_legacy = name_legacy;
+}
+
+HB_EXTERN hb_bool_t
+hb_subset_input_get_name_legacy (hb_subset_input_t *subset_input)
+{
+  return subset_input->name_legacy;
+}